aLIGO LHO Logbook https://www-alog1.ligo-wa.caltech.edu/aLOG/ General logbook for aLIGO activities en-us Tue, 05 Aug 2025 07:03:51 -0700 H1 CDS - Workstations updated https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86190 <p>Author: erik.vonreis@ligo.org</p><p>Report ID: 86190</p><p>Workstations were updated and rebooted.&nbsp; This was an OS packages update.&nbsp; Conda packages were not updated.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86190 erik.vonreis@ligo.org Tue, 05 Aug 2025 07:03:51 -0700 H1 CDS H1 General - Monday Ops Eve Shift report. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86189 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86189</p><p><strong>TITLE:</strong> 08/05 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 149Mpc<br /> <strong>INCOMING OPERATOR:</strong> Ryan C<br /> <strong>SHIFT SUMMARY:</strong><br /> H1 Stayed Locked&nbsp; and observing the entire shift.<br /> No SQZ issues, Pi&#39;s, wind, barely even an eath_quake! It was a very quite night without any super events once again.</p> <p>All systems running as expected.</p> <p>GRB-Short E586884 at 23:08:34 UTC<br /> <br /> <strong>LOG:</strong></p> <p>No Log</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86189 anthony.sanchez@ligo.org Mon, 04 Aug 2025 22:08:51 -0700 H1 General H1 General - Checking HVAC Fans https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86188 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86188</p><p>Using Vibration Sensors To Gauge Health Of HVAC Fans Site Wide <a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?RequestID=26413">Famis 26413</a><br /> <br /> &nbsp;</p> <!--- Output file_1_86188 div --> <div id="file_1_86188" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86188 div --> </div> <!--- Output files_1_86188 div --> <div id="files_1_86188" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86188_20250804220056_Screenshot_2025-08-04_15-37-26.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86188_20250804220056_Screenshot_2025-08-04_15-37-26.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86188_20250804220100_Screenshot_2025-08-04_15-37-05.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86188_20250804220100_Screenshot_2025-08-04_15-37-05.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86188 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86188 anthony.sanchez@ligo.org Mon, 04 Aug 2025 22:02:05 -0700 H1 General H1 SUS - Created new OSEM estimator fits for SR3 Yaw (once again) https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86187 <p>Author: edgard.bonilla@ligo.org</p><p>Report ID: 86187</p><p>Ivey, Edgard.</p> <p>Ivey made even newer fits for the M1 SR3 in &quot;Yaw using the measurements that Oli took in [<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86075">LHO: 86075</a>].</p> <p>These fits are pretty similar to the last set we got in [<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85446">LHO: 85446</a>]. However, this time, Ivey used vectfit3 for both of the fits directly. She only manually ensured that the zeros were all in the left-hand-plane, and that there were no additional zeros in the M1 to M1 transfer function, even if the measurements show a bit extra phase loss compared to the fit.</p> <p>These are the fits obtained [see figures for an eye-test of the goodness of fit]:</p> <p><strong>For the ISI to M1 transfer function:</strong><br /> &#39;zpk([0,0,-0.027+20.489i,-0.064+11.458i,-0.027-20.489i,-0.064-11.458i],[-0.072+6.395i,-0.072-6.395i,-0.096+14.454i,-0.096-14.454i,-0.062+21.267i,-0.062-21.267i],-0.001)&#39;</p> <p><strong>The M1 to M1 transfer function:</strong><br /> &#39;zpk([-0.002+19.246i,-0.005+8.312i,-0.002-19.246i,-0.005-8.312i],[-0.065+6.392i,-0.065-6.392i,-0.076+14.442i,-0.076-14.442i,-0.055+21.272i,-0.055-21.272i],12.085)&#39;</p> <p><strong>The fits were added to the Sus SVN and live inside &#39;<tt>/ligo/svncommon/</tt>SusSVN/sus/trunk/HLTS/Common/FilterDesign/Estimator/fits_H1SR3_2025-07-29.mat&#39; . </strong></p> <p>The filters can be installed using <strong>&#39;make_SR3_yaw_model.m&#39;</strong>, which lives in the same folder [for reference, see <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=84041">LHO: 84041</a>, where Oli got the fits running for a test]. This last script, as well as <strong>&#39;make_SR3_yaw_blend.m&#39;</strong> were updated to work with the new naming convention for the estimator block.</p> <p>Hopefully we will get to test the estimator again soon!</p> SEI, SUS <!--- Output file_1_86187 div --> <div id="file_1_86187" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86187 div --> </div> <!--- Output files_1_86187 div --> <div id="files_1_86187" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86187_20250804173259_SR3_Suspoint_2_M1_7_29.jpg" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86187_20250804173259_SR3_Suspoint_2_M1_7_29.jpg" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86187_20250804173305_SR3_M1_2_M1_7_29.jpg" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86187_20250804173305_SR3_M1_2_M1_7_29.jpg" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86187 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86187 edgard.bonilla@ligo.org Mon, 04 Aug 2025 17:33:56 -0700 H1 SUS H1 General - Monday Ops Eve Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86186 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86186</p><p><strong>TITLE:</strong> 08/04 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 146Mpc<br /> <strong>OUTGOING OPERATOR:</strong> TJ<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 19mph Gusts, 13mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.04 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.09 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong><br /> H1 has been locked and Observing for just over 2 hours.&nbsp;<br /> <br /> I&#39;ve got a and Alarm from the CDS screen about H0:VAC-MX_X1_PT343B_PRESS_TOR, but after speaking to Janos this is in preparation for tomorrow&#39;s maintence Tuesday VAC team activities.<br /> <br /> So other than that everything seems to be humming along.</p> VE https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86186 anthony.sanchez@ligo.org Mon, 04 Aug 2025 16:48:25 -0700 H1 General H1 TCS - Calculating curvature of SR3 when heated up by 2W. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86184 <p>Author: jennifer.wright@ligo.org</p><p>Report ID: 86184</p><p>Jennie W, Camilla C</p> <p>&nbsp;</p> <p>A while ago we heated up then cooled down the SR3 heater (alog #<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=84749">84749</a>).</p> <p>As part of measurements using this data I calculated the curvature change, following the approach at LLO by Aidan given iin alog #<a href="https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=27262">27262</a>. Matlab code is below.</p> <p>&nbsp;</p> <pre> <code>%calculate SR3 spherical lens</code> <code>Pin = 2;%W</code> <code>double_pass = 2;</code> <code>SR3_t = (3*3600) + (11*60); % Time for cooldown in s.</code> <code>delta_ITMY = -2.67e-5;% decrease in defocus of ITMY according to Hartmann sensor.</code> <code>D_ITMY = delta_ITMY./double_pass;% defocus change in Dioptres</code> <code>D_ITMY_error = 5e-6;% error on defocus in Dioptres.</code> <code>R_SR3 = 36.013;% cold radius of curvature in m</code> <code>delta_R = (2./((2/R_SR3)+D_ITMY))-R_SR3; % change in curvature during cooldown in m/</code> <code>delta_delta_R = D_ITMY_error.*(2./((2./R_SR3)+D_ITMY)); % error on curvature change.</code></pre> <p>&nbsp;</p> <p>This means the rate of defocus change is&nbsp;6.6750uD per Watt.</p> <p>The final curvature change is + 0.0087&nbsp;m +/- 0.0002 m as the mirror becomes less curved due to cooldown.</p> <p>&nbsp;</p> ISC, SQZ https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86184 jennifer.wright@ligo.org Mon, 04 Aug 2025 16:33:24 -0700 H1 TCS LHO General - Ops Day Shift End https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86167 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86167</p><p><strong>TITLE:</strong> 08/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 150Mpc<br /> <strong>INCOMING OPERATOR:</strong> Tony<br /> <strong>SHIFT SUMMARY:</strong> Commissioning started the shift with one lock loss and a longer recovery. After we finally got back up we have been observing now for 2 hours.<br /> <strong>LOG:</strong></p> <ul> <li>1530 Out of Observing to start planned commissioning</li> <li>1754 Lock loss <ul> <li>See&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86180">alog86180</a> for more relocking details</li> </ul> </li> <li>2138 Observing</li> <li>2308 GRB short E586884</li> </ul> <table> <tbody> <tr> <th>Start Time</th> <th>System</th> <th>Name</th> <th>Location</th> <th>Lazer_Haz</th> <th>Task</th> <th>Time End</th> </tr> <tr> <td>14:53</td> <td>FAC</td> <td>Kim, Nelly</td> <td>MY, MX</td> <td>n</td> <td>Tech clean</td> <td>15:44</td> </tr> <tr> <td>15:27</td> <td>CDS</td> <td>Fil</td> <td>MY</td> <td>n</td> <td>Pick up equipment</td> <td>15:49</td> </tr> <tr> <td>15:33</td> <td>FAC</td> <td>Kim</td> <td>Opt lab</td> <td>n</td> <td>Tech clean</td> <td>15:50</td> </tr> <tr> <td>16:05</td> <td>PEM</td> <td>Robert</td> <td>LVEA</td> <td>n</td> <td>Meas setup</td> <td>18:41</td> </tr> <tr> <td>17:26</td> <td>CDS</td> <td>Erik</td> <td>Office</td> <td>n</td> <td>nuc5 work</td> <td>17:46</td> </tr> <tr> <td>18:20</td> <td>PCAL</td> <td>Rick</td> <td>PCAL lab</td> <td>-</td> <td>Looking for something</td> <td>18:50</td> </tr> <tr> <td>19:48</td> <td>VAC</td> <td>Janos</td> <td>MX</td> <td>n</td> <td>Looking at pump</td> <td>21:21</td> </tr> <tr> <td>20:27</td> <td>-</td> <td>Randy</td> <td>LVEA</td> <td>n</td> <td>Checking for fans</td> <td>20:36</td> </tr> <tr> <td>21:32</td> <td>VAC</td> <td>Travis</td> <td>Mids</td> <td>n</td> <td>Drop off gauge</td> <td>22:02</td> </tr> <tr> <td>23:02</td> <td>SUS</td> <td>Ryan</td> <td>Opt Lab</td> <td>n</td> <td>Parts hunt</td> <td>23:23</td> </tr> </tbody> </table> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86167 thomas.shaffer@ligo.org Mon, 04 Aug 2025 16:30:26 -0700 LHO General H1 SQZ - Comment to 2W Mid SQZ Data for 5kHz and 10kHz HOM Spacing https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86182 <p>Author: sheila.dwyer@ligo.org</p><p>Report ID: 86182</p><p>In this data I only see evidence of one mode at 5kHz, and one mode at 10kHz.&nbsp; If the astigmatism that caused the X arm second order modes to separate into two in 86107 is due to the point absorbers or some other laser heating, it could make sense that we don&#39;t see astigmatism at 2W.&nbsp; However, the ring heater settings for the two arms are different, so I would have expected the X and Y arm HOMs to be separated even at 2W.&nbsp; This data was taken with 0.44W on ITMX RH (per segment), 1W per segment on ETMX RH, 0W on ITMY RH, and 1.5W per segment on ETMY RH.</p> <p>Using a cursor to find the edges of the rotation from the three mid sqz traces that Camilla tok, the 5kHz mode frequency is 4956.5+/- 20 Hz, and the 10kHz mode is at 9981.5 +/- 19.5 Hz.&nbsp; This suggests that the second order mode is at 99% of 2* first order mode frequency, similar to the ratio that we saw at full power.&nbsp; <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86107">86107</a>. In the attached screenshot, the top panel shows where I put the cursor to measure the location of the 5kHz mode, the lime veritcal line in the bottom plots shows twice that frequency, 9913 Hz, which is clearly below the sqz rotation caused by the HOMs.</p> <p>&nbsp;</p> <!--- Output file_1_86182 div --> <div id="file_1_86182" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86182 div --> </div> <!--- Output files_1_86182 div --> <div id="files_1_86182" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86182_20250804161519_HOMS_2W.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86182_20250804161519_HOMS_2W.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86182 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86182 sheila.dwyer@ligo.org Mon, 04 Aug 2025 16:15:27 -0700 H1 SQZ H1 CDS - MX PT343 Gauge Alarms Bypassed and disabled in VACSTAT https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86181 <p>Author: david.barker@ligo.org</p><p>Report ID: 86181</p><p>While PT343 gauge is valved out and reading a higher pressure than normal for the next day or so several changes have been made to the alert/alarm systems:</p> <p>VACSTAT: PT343 is Disabled, it cannot cause vacstat glitch detection events (right side of attachment).</p> <p>ALARM: PT343 has been bypassed, meaning it says in alarm but no cell phone texts are sent (lower part in attachment). Bypass time:</p> <p>Bypass will expire:<br /> Wed Aug &nbsp;6 01:08:03 PM PDT 2025<br /> For channel(s):<br /> &nbsp; &nbsp; H0:VAC-MX_X1_PT343B_PRESS_TORR<br /> &nbsp;</p> <!--- Output file_1_86181 div --> <div id="file_1_86181" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86181 div --> </div> <!--- Output files_1_86181 div --> <div id="files_1_86181" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86181_20250804144439_PT343_alarms.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86181_20250804144439_PT343_alarms.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86181 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86181 david.barker@ligo.org Mon, 04 Aug 2025 14:46:30 -0700 H1 CDS H1 General - Comment to Lock loss 1754 UTC https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86180 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86180</p><p>Relocking took a 3hr45min, mostly because we couldn&#39;t get DRMI to lock. I first tried locking without an initial alignment and then DRMI had little to no flashes, so I initiated an alignment. It went through quickly and without issue. Then when trying to lock DRMI again it would have great flashes and triggers, but it would rarely catch. The few times it did, we didn&#39;t make it much further before we had a lock loss.</p> <p>I tried PRMI a few times and then I was reminded that we needed to touch up PRM since we don&#39;t have any ASC that will touch that up in this state. I ended up slightly moving PRM to increase POP 90, and then tried DRMI again. 7min later it locked and we made it all the way up to NLN.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86180 thomas.shaffer@ligo.org Mon, 04 Aug 2025 14:43:47 -0700 H1 General H1 ISC - Attempt at measuring HO modes in OMC reflected port https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86175 <p>Author: jennifer.wright@ligo.org</p><p>Report ID: 86175</p><p>Jennie W, Sheila D</p> <p>&nbsp;</p> <p>Summary: tried to use ETMX injection to tag light coming from the arms&nbsp;at the REFL port as we step the darm offset, didn&#39;t get a full measurement as we lost lock - seems unrelated.</p> <p>&nbsp;</p> <p>During the commissioning period and while Robert&nbsp;as doing shaker i jections, I tuned a line at 74.37 Hz on the SUS-ETMX_L3_CAL_EXC. This is the same point at which the&nbsp;ETMX CAL line input goes in (<a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131148_Screenshot_2025-08-04_13-10-11.png">where the calibration exc for ETMX is injected </a>into the DRIVEALIGN matrix). The psds shown were measured about a minute before lost lock and it can be seen that the rms motion in the upper left of the ETMX bottom mass is not reaching its limit.</p> <p>The <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131135_Screenshot_2025-08-04_11-06-22.png">settings</a> I used in AWG are shown in this photo.</p> <p>After checking the <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131143_spectrum.png">height of the line in DARM, OMC REFL and the rms on the upper left ESD readout</a>, I tried to take a darm offsert step measurement using autodarmpoffsetstep.py (using the ETMX line instead of the PCAL lines to readout the optical gain). To do this I comment out the setup_pcal_for_darm_offset_step and restore_pcal functions in autodarmoffsetstep.py before running it.</p> <p>I had to the stop the measurement twice to trurn off the OMC ASC and put the X0 offset back to what it was before the measurement. One step into this measurement set we then <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131336_lock_loss.png">lost lock</a>&nbsp;(around 2 minutes&nbsp;into the final attempted DARM offset measurement). We can&#39;t see any evidence so far as this was the causer of lockloss as the line had been <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131341_darm_offset_etmx.png">running for 40 minutes or so</a> without breaking the lock.</p> <p>&nbsp;</p> <p>Data is saved in an xml in /ligo/gitcommon/jennifer.wright/git/DARM_OFFSET</p> <!--- Output file_1_86175 div --> <div id="file_1_86175" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86175 div --> </div> <!--- Output files_1_86175 div --> <div id="files_1_86175" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131135_Screenshot_2025-08-04_11-06-22.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86175_20250804131135_Screenshot_2025-08-04_11-06-22.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131143_spectrum.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86175_20250804131143_spectrum.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131148_Screenshot_2025-08-04_13-10-11.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86175_20250804131148_Screenshot_2025-08-04_13-10-11.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131336_lock_loss.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86175_20250804131336_lock_loss.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86175_20250804131341_darm_offset_etmx.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86175_20250804131341_darm_offset_etmx.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86175 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86175 jennifer.wright@ligo.org Mon, 04 Aug 2025 14:22:15 -0700 H1 ISC H1 General - Comment to Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86179 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86179</p><p>I don&#39;t see anything fishy going on on the guardian side of things here. When the ISI_HAM2 node had rerun the HIGH_ISOLATED state, after running through INIT, it changed a bunch of the GS13INF gains. See the end of the guardian log for the ISI_HAM2 and SEI_HAM2 nodes in the attached txt file. We then saw these changes later as well in SDF (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86140">alog84140</a>), so the large earthquake script button might be conflicting with this.</p> <!--- Output file_0_86179 div --> <div id="file_0_86179" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86179 div --> </div> <!--- Output files_0_86179 div --> <div id="files_0_86179" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/txt.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86179_20250804141204_ham2_grd_log_202508012202.txt" target="blank">ham2_grd_log_202508012202.txt</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86179 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86179 thomas.shaffer@ligo.org Mon, 04 Aug 2025 14:15:27 -0700 H1 General H1 General - Quarterly trends of HWWD bits for indication of negative function https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86178 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86178</p><p>Plot of 3 months of Bit switching.<br /> There are certainly bits switching on all of the channels.<br /> Marked nad noticable increase in bit switching on May 22nd for ETMY which I believe is a <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85929">known issue</a>.</p> CDS, SEI, SUS <!--- Output file_1_86178 div --> <div id="file_1_86178" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86178 div --> </div> <!--- Output files_1_86178 div --> <div id="files_1_86178" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86178_20250804140313_Screenshot_2025-08-04_13-46-05.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86178_20250804140313_Screenshot_2025-08-04_13-46-05.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86178_20250804140318_Screenshot_2025-08-04_13-44-59.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86178_20250804140318_Screenshot_2025-08-04_13-44-59.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86178 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86178 anthony.sanchez@ligo.org Mon, 04 Aug 2025 14:09:59 -0700 H1 General H1 SEI - Comment to SEISMON does not reliably predict ground velocities https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86177 <p>Author: jeffrey.kissel@ligo.org</p><p>Report ID: 86177</p>For posterity -- the LHO Paper Plate Award was given for the first iteration of this aLOG that was posted -- it had only contained a title and an attached <i>screenshot</i> of the aLOG <i>draft</i>. Jim was aware of the issue within the 24 hour "set in stone" editing time limit, so he&#39;s since updated the aLOG to have its originally intended content and completeness. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86177 jeffrey.kissel@ligo.org Mon, 04 Aug 2025 13:53:52 -0700 H1 SEI LHO General - Comment to Unbeelievable Summer at LHO https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86176 <p>Author: jeffrey.kissel@ligo.org</p><p>Report ID: 86176</p>This work demands we the dust off the ol&#39; LHO Paper Plate Award!! "This <i>buzz-worthy</i> award goes to <u>Tyler Guidry, Phillip Johnson, Mitch Robison, Chris Soike, and Kim Stewart</u> for <b><u>LHO&#39;s Un-bee-lievble Summer (LHO aLOG 86102).</u></b>" Congratulations! <!--- Output file_1_86176 div --> <div id="file_1_86176" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86176 div --> </div> <!--- Output files_1_86176 div --> <div id="files_1_86176" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86176_20250804133834_20250804_UnbeelievableSummer_PaperPlateAward.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86176_20250804133834_20250804_UnbeelievableSummer_PaperPlateAward.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86176 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86176 jeffrey.kissel@ligo.org Mon, 04 Aug 2025 13:41:04 -0700 LHO General H1 General - Comment to Out of Observing 20:40-20:43 UTC https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86174 <p>Author: jeffrey.kissel@ligo.org</p><p>Report ID: 86174</p>Travis&#39;s 4-word aLOG claimed the 50000th aLOG and thus we honored this <i>amazing</i> achievement with the attached LHO Paper Plate Award! "This award goes to <u>Travis Sadecki</u> for <b><u>his 5 words in the 50,000th aLOG</u></b> (LHO aLOG 50000)." A truly astounding achievement. Who will claim the 100000th aLOG??? <!--- Output file_1_86174 div --> <div id="file_1_86174" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86174 div --> </div> <!--- Output files_1_86174 div --> <div id="files_1_86174" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86174_20250804121727_20190617_LHO50000_PaperPlateAward.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86174_20250804121727_20190617_LHO50000_PaperPlateAward.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86174 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86174 jeffrey.kissel@ligo.org Mon, 04 Aug 2025 12:19:02 -0700 H1 General H1 SUS - ISC vs. DAMP Pitch and Yaw Control Request for H1SUSMC1 Top Mass (M1) https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86172 <p>Author: jeffrey.kissel@ligo.org</p><p>Report ID: 86172</p>J. Kissel I&#39;m are trying to figure out the best metrics for showing off the improvements to the OSEM PD&#39;s satellite amplifier&#39;s whitening improvements. Thus far, Oli&#39;s been using the input to the damping loops as the metric, using a regression of the corresponding ISI&#39;s GS13s to subract out a fit of how much of that sensor signal is seismic noise, and dividing out the loop suppression -- see <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86149">LHO:86149</a> for the most recent examples comparing before vs. after the sat amp upgrade. Without the presence of any other noise or control signals, that should be a fair comparison of the OSEM PD&#39;s sensor noise improvement. However, for a lot of these comparisons ISC control signals are complicating the comparison -- usually at low frequency where ISC control is typically distributed to the top masses. I use this aLOG as an example of how to better understand this contribution breakdown for a relatively simple suspension -- H1SUSMC1 -- which only has P and Y ISC control from the IMC WFS. (Longitudinal control for IMC L is fed to MC2). This will also be interesting in the future :: in the context of how SPI and other sensors may improve the cavity motion, :: in terms of what DOFs and loop&#39;s worth of control drive at which frequencies -- important for discussions along the lines of "DOF [blah] is dominating the control signal, and the actuator cross-coupling for M1 drive of DOF [blah] to M3 optic DOF [blorp] is large, so let&#39;s reduce the DOF [blah] drive," and :: in terms of whether/where implementing ISI GS13 estimator feedforward will improve things. To understand how much of the damping loop *error* signal is composed of ISC *control* signal, I look compare the - the ISC control signal, - the DAMP *control* signal, against the - the MASTER total control request, all calibrated to the same point in the control system -- where the control output is summed and in the OSEM basis; just down-stream of the EUL2OSEM matrix, and just upstream of the COILOUTF filters which compensate for the coil driver frequency response (uninteresting for this study). Pitch -- the T1T2T3 actuators (3) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104638_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_P.png">Attachment 3</a> Pitch Noise Comparison excerpt from Oli&#39;s <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86149">LHO:86149</a>. These are times when the IMC was LOCKED, so there should be ISC control. But, see the expected factors of 2x-to3x improvement in the OSEM noise below ~5 Hz. So, maybe the ISC control is so low in bandwidth that its affect isn&#39;t impacting this study. But, we can see that there&#39;s clearly some other loop suppression that has not been accounted for, so maybe it *is* high bandwidth? Let&#39;s find out. (1) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104028_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_T1T2T3.png">Attachment 1</a> Comparison of ISC pitch, DAMP pitch, as well as the other DAMP DOFs that use the T1, T2, and T3 actuators -- Vertical and Roll -- control signals. Here, we can clearly see that <b>the damping loops are dominating the T2 (and thus T3) control signal above ~ 0.5 Hz, or conversely, the IMC WFS DC coupled control is dominating below 0.5 Hz.</b> (2) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104035_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_T1T2T3.png">Attachment 2</a> shows that the T2 and T3 sensors receive identical request (mostly an out-of-phase combination of Pitch and Roll damping request, as expected from the EUL2OSEM matrix), and <b>T1 drives mostly Roll damping request. The vertical drive request is subdominant at all frequencies.</b> (3) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104638_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_P.png">Attachment 4</a> shows the open loop gain and loop suppression TF magnitudes for pitch. The loop suppression here looks very much like the inverse of the shape of the ASD left in the pitch regression, making me worried that Oli&#39;s automated regime for removing the loop suppression isn&#39;t perfect... I&#39;ll ask. Yaw -- the LFRT actuators (7) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105956_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_Y.png">Attachment 7</a> The before vs. after comparison of OSEM noise (5) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105943_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_LFRT.png">Attachment 5</a> Similar comparison of ISC vs. relevant DAMP control -- showing IMC WFS control dominating only below ~0.2 Hz. (6) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105948_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_LFRT.png">Attachment 6</a> As expected from the EUL2OSEM matrix, the LF and RT actuators receive the same control. (8) <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105959_2025-08-04_H1SUSMC1_M1_DAMP_Y_OLG_and_LS.png">Attachment 8</a> Shows the open loop gain and loop suppression TF magnitudes for the Yaw damping loop.IOO, ISC <!--- Output file_1_86172 div --> <div id="file_1_86172" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86172 div --> </div> <!--- Output files_1_86172 div --> <div id="files_1_86172" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104028_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_T1T2T3.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804104028_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_T1T2T3.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104035_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_T1T2T3.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804104035_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_T1T2T3.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804104638_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_P.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804104638_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_P.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105919_2025-08-04_H1SUSMC1_M1_DAMP_P_OLG_and_LS.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804105919_2025-08-04_H1SUSMC1_M1_DAMP_P_OLG_and_LS.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105943_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_LFRT.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804105943_2025-08-04_H1SUSMC1_M1_MASTEROUT_ISCvsDAMP_breakdown_LFRT.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105948_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_LFRT.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804105948_2025-08-04_H1SUSMC1_M1_MASTEROUT_all_LFRT.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105956_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_Y.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804105956_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200_Y.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86172_20250804105959_2025-08-04_H1SUSMC1_M1_DAMP_Y_OLG_and_LS.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86172_20250804105959_2025-08-04_H1SUSMC1_M1_DAMP_Y_OLG_and_LS.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86172 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86172 jeffrey.kissel@ligo.org Mon, 04 Aug 2025 11:18:07 -0700 H1 SUS H1 General - Lock loss 1754 UTC https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86173 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86173</p><p><a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss?event=1438365262">1438365262</a></p> <p>No obvious cause yet. Commissioning was going on at that time, but no activity seems suspect.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86173 thomas.shaffer@ligo.org Mon, 04 Aug 2025 11:00:14 -0700 H1 General H1 PSL - PSL 10-Day Trends https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86170 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86170</p><p>FAMIS <a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?InstallID=2&amp;RequestID=31097">31097</a></p> <p>Looks like only things happening this past week are the FSS TPD signal is dropping, so the RefCav may need some alignment touchup soon, and the mysterious jumps in the TPD signal I first saw a couple weeks ago seem to have stopped as of last Tuesday. Looking at some IMC signals (<a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804104249_fss_jumps_after_08402025.png">final screenshot</a>), these show the same behavior of calming down last Tuesday, however, I can&#39;t explain what would have changed that day to affect the feedback from the IMC to the FSS.</p> <!--- Output file_1_86170 div --> <div id="file_1_86170" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86170 div --> </div> <!--- Output files_1_86170 div --> <div id="files_1_86170" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804103219_WeeklyCooling_08042025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86170_20250804103219_WeeklyCooling_08042025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804103221_WeeklyEnv_08042025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86170_20250804103221_WeeklyEnv_08042025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804103224_WeeklyLaser_08042025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86170_20250804103224_WeeklyLaser_08042025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804103227_WeeklyStabilization_08042025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86170_20250804103227_WeeklyStabilization_08042025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86170_20250804104249_fss_jumps_after_08402025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86170_20250804104249_fss_jumps_after_08402025.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86170 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86170 ryan.short@ligo.org Mon, 04 Aug 2025 10:58:15 -0700 H1 PSL H1 SQZ - SQZ FC Issues Troublshooting. IR LSC loop was unstable, adjusted gain. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86166 <p>Author: camilla.compton@ligo.org</p><p>Report ID: 86166</p><p><em>Sheila, Camilla </em></p> <p>The operator team has been having a lot of issues with the SQZ FC locking recently, e.g. <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86153">86153</a>. We hoped this was due to incorrect SEI settings <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86120">86120</a>, but this didn&#39;t solve the issue.</p> <p>The issue isn&#39;t with green locking as green locking can stay for ~minutes. It appears to be when we get to state FC_ASC_ON, although the ASC is not the issue (Oli had tried keeping it off). Comparing an <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084709_FC_unsuccessful.png">unsuccessful</a> to <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084706_FC_successful.png">successful</a> time, both the green and IR powers are lower when we are unsuccessful, as well as the FC_WFS_A_SUM Q_OUT channel, both the WFS and the IR signal get noisy with a growing<strong> ~15Hz oscillation</strong> before the lockloss <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084722_FC_successful_15Hz.png">plot</a>, which happens before the ASC is turned on.</p> <p>Sheila notes that this means that the FC IR LSC loop was probably unstable. We measured the crossover and could see it was very close to unstable at 15Hz, <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804101643_FC_cross_over_low.png">see plot</a>. We<strong> increased the gain in at the FC LSC input matrix a factor of 1.3,&nbsp;</strong><em>H1:SQZ-FC_LSC_INMTRX_RAMPING_2_7</em> via sqzparams.py (fc_wfs_a_ir_gain) from -0.86 to -1.12.&nbsp; <strong>This brought the crossover back to the reference with 50deg of phase margin. </strong>Ideally we would compleatly redesign this loop but it was hard to design originally <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=66092">66092</a>.</p> <p>To get FC to lock successfully, Sheila did had to trend and revert FC2 and ZM3 alignments. It seems that while the FC locking is struggling, the fC ASC can pull these away from nominal.</p> <p>Interestingly the successful lock, as the ASC comes on, the green light decreases as the IR light increases, maybe this si a sign that green and IR aren&#39;t well co-aligned. There is picos in the green FC path, but we don&#39;t want to touch these as it&#39;s more likely that different OPO crystal voltages or spots change the alignment.</p> <p>Other things that have changed over the past ~month:</p> <ul> <li>FC launch power is lower and correlated to the FC_TRANS green power being lower, <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804083036_FCpower.png">plot</a>. We were having FC issues at the end of June when this was low as well. We can&#39;t increase this without taking power from the green pump.</li> <li>FC IR power is degrading quickly throughout a lock, the operators adjusting the OPO temperature brings this up again, <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804083040_FCred.png">plot</a>, but this only sometimes fixes issues with FC locking, e.g.&nbsp; <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86153">86153</a>.</li> </ul> <p>&nbsp;</p> <p>Hopefully this has fixed our issues, but <u><strong>if this happens again, steps operators should take are </strong></u>(added to <a href="https://cdswiki.ligo-wa.caltech.edu/wiki/Troubleshooting%20SQZ">wiki</a>):</p> <ul> <li>Check OPO temperature via taking<strong> SQZ_OPO_LR guardian to SCAN_OPOTEMP</strong> (will take 3 minutes, can watch via !SQZ Scopes &gt; OPO temp) once it&#39;s done you can take SQZ_OPO_LR back to LOCKED_CLF_DUAL and&nbsp; check the OPO temp plot that&#39;s in <a href="https://lhocds.ligo-wa.caltech.edu/exports/SQZ/GRD/OPOTEMP_SCAN/">https://lhocds.ligo-wa.caltech.edu/exports/SQZ/GRD/OPOTEMP_SCAN/</a></li> <li>If H1:SQZ-FC_TRANS_C_LF_OUTPUT is a lot lower than 80, should check alignments and revert or optimize of FC2 and ZM3 (explicit instructions in the <a href="https://cdswiki.ligo-wa.caltech.edu/wiki/Troubleshooting%20SQZ">wiki</a> (under &quot;<em>Issues with SQZ_FC Guardian</em>&quot;).</li> </ul> OpsInfo <!--- Output file_1_86166 div --> <div id="file_1_86166" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86166 div --> </div> <!--- Output files_1_86166 div --> <div id="files_1_86166" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804083036_FCpower.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804083036_FCpower.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804083040_FCred.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804083040_FCred.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084706_FC_successful.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804084706_FC_successful.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084709_FC_unsuccessful.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804084709_FC_unsuccessful.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804084722_FC_successful_15Hz.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804084722_FC_successful_15Hz.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86166_20250804101643_FC_cross_over_low.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86166_20250804101643_FC_cross_over_low.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86166 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86166 camilla.compton@ligo.org Mon, 04 Aug 2025 10:46:11 -0700 H1 SQZ H1 PEM - Comment to Jitter peaks below 40 Hz remain in cleaned spectra https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86171 <p>Author: elenna.capote@ligo.org</p><p>Report ID: 86171</p><p>The nonsens training for the cleaning is set to clean over the band from 20 Hz to 8 kHz. However, the most appreciable cleaning occurs above 100 Hz. I have attached two plots from the recent training Matt and I ran. <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86171_20250804103557_Jitter_subtracted_H_1436726201_1200_2025_07_21_12h51m26s.png">The first</a> compares the strain before and after the code runs an offline cleaning of the data. Even in the offline cleaning, it does not perform any subtraction below 60 Hz. <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86171_20250804103611_Jitter_contributions_H_1436726201_1200_2025_07_21_12h51m26s.png">The contributions plot</a> shows that the code measures a contribution from IMC WFS A pitch and yaw that is approximately 2 orders of magnitude below the strain.</p> <p>Similarly, the noise budget injections usually indicate a very low jitter coupling below 60 Hz. This plot is the jitter subbudget showing pitch and yaw contributions. I removed the &quot;total H1&quot; line, since it&#39;s currently incorrect. However, this plot only shows contributions from IMC WFS A, and jitter is measured using the IMC PZT, which may only allow us to capture one gouy phase.</p> <p>All of this is to say, despite this coherence, the nonsens algorithm doesn&#39;t find anything to subtract at low frequency. Our noise budget also doesn&#39;t show significant coupling here.</p> <p>Adding: Robert and I think it may be a resolution issue. The noise budget resolution is quite broad at 0.3 Hz, so that may be why those peaks are not captured in the injection. I&#39;m not sure how to address or test the nonsens cleaning resolution.</p> <!--- Output file_1_86171 div --> <div id="file_1_86171" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86171 div --> </div> <!--- Output files_1_86171 div --> <div id="files_1_86171" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86171_20250804103557_Jitter_subtracted_H_1436726201_1200_2025_07_21_12h51m26s.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86171_20250804103557_Jitter_subtracted_H_1436726201_1200_2025_07_21_12h51m26s.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86171_20250804103611_Jitter_contributions_H_1436726201_1200_2025_07_21_12h51m26s.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86171_20250804103611_Jitter_contributions_H_1436726201_1200_2025_07_21_12h51m26s.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86171_20250804103616_jitter_NB.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86171_20250804103616_jitter_NB.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86171 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86171 elenna.capote@ligo.org Mon, 04 Aug 2025 10:42:02 -0700 H1 PEM H1 General - Comment to Lockloss from NLN https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86169 <p>Author: elenna.capote@ligo.org</p><p>Report ID: 86169</p><p>This lockloss does seem to be the result of some big kick that at least the ASC loops see, although it appears stronger in pitch and does not have the same behavior as our <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85973">yaw excursion locklosses</a> that we linked to the TMSX suspension.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86169 elenna.capote@ligo.org Mon, 04 Aug 2025 10:22:15 -0700 H1 General LHO VE - Mon CP1 Fill https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86168 <p>Author: david.barker@ligo.org</p><p>Report ID: 86168</p><p><strong>Mon Aug 04 10:07:01 2025 INFO: Fill completed in 6min 57secs</strong></p> <p>Note that, similar to yesterday, TC-B does not saturate at -200C. Perhaps due to lower OAT (24C, 76F).</p> <!--- Output file_1_86168 div --> <div id="file_1_86168" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86168 div --> </div> <!--- Output files_1_86168 div --> <div id="files_1_86168" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86168_20250804102048_CP1-1213.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86168_20250804102048_CP1-1213.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86168 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86168 david.barker@ligo.org Mon, 04 Aug 2025 10:22:07 -0700 LHO VE H1 SEI - H1 ISI CPS Noise Spectra Check - Weekly https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86165 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86165</p><p>FAMIS<a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?InstallID=2&amp;RequestID=26054">26054</a></p> <p>The script reported ITMY_ST1_CPSINF_H3 is high. This was the same as last time this was ran (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85969">alog85969</a>).</p> <!--- Output file_0_86165 div --> <div id="file_0_86165" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86165 div --> </div> <!--- Output files_0_86165 div --> <div id="files_0_86165" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86165_20250804080332_CPS_spectra_07%3A59-08_04_2025.pdf" target="blank">CPS_spectra_07:59-08_04_2025.pdf</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86165 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86165 thomas.shaffer@ligo.org Mon, 04 Aug 2025 08:03:33 -0700 H1 SEI LHO General - Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86164 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86164</p><p><strong>TITLE:</strong> 08/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 148Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Corey<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 14mph Gusts, 8mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.02 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.07 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong> Locked for 6.5 hours after an earthquake took us out 10 hours ago. The DARM FOM is currently not working. Violin modes, most notably ITMY mode 6, are elevated but the DCPD window FOM shows that they are damping.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86164 thomas.shaffer@ligo.org Mon, 04 Aug 2025 07:36:16 -0700 LHO General H1 General - Lockloss from NLN https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86162 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86162</p><p><a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1438314477">3:47:39 UTC unknown Lockloss </a>&nbsp;<br /> <br /> &nbsp;</p> Lockloss <!--- Output file_1_86162 div --> <div id="file_1_86162" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86162 div --> </div> <!--- Output files_1_86162 div --> <div id="files_1_86162" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86162_20250803214439_Screenshot_2025-08-03_20-52-23.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86162_20250803214439_Screenshot_2025-08-03_20-52-23.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86162_20250803214454_Screenshot_2025-08-03_21-35-03.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86162_20250803214454_Screenshot_2025-08-03_21-35-03.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86162_20250803214503_Screenshot_2025-08-03_21-37-13.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86162_20250803214503_Screenshot_2025-08-03_21-37-13.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86162_20250803220957_Screenshot_2025-08-03_22-09-40.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86162_20250803220957_Screenshot_2025-08-03_22-09-40.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86162 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86162 anthony.sanchez@ligo.org Sun, 03 Aug 2025 22:10:25 -0700 H1 General H1 General - Sunday Eve Shift report. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86163 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86163</p><p><strong>TITLE:</strong> 08/04 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Earthquake<br /> <strong>INCOMING OPERATOR:</strong> Corey<br /> <strong>SHIFT SUMMARY:</strong><br /> H1 was locked for a good 6 hours then had an <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86162">unknown lockloss.</a><br /> Relocking was interupted at LOWNOISE_COIL_DRIVERS, due to a <a href="https://earthquake.usgs.gov/earthquakes/eventpage/us6000qxzw/">6.2 M&nbsp; </a>earth_quake whcih took H1 to DOWN.</p> <p>H1 is currently waiting in Earthquake mode.<br /> <br /> <br /> <strong>LOG:</strong><br /> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p> <table> <tbody> <tr> <th>Start Time</th> <th>System</th> <th>Name</th> <th>Location</th> <th>Lazer_Haz</th> <th>Task</th> <th>Time End</th> </tr> <tr> <td>21:34</td> <td>SPI</td> <td>Tony</td> <td>PCAL Lab</td> <td>Yes</td> <td>Testing beam Splitter ratio analysis tools</td> <td>22:13</td> </tr> </tbody> </table> <p>&nbsp;</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86163 anthony.sanchez@ligo.org Sun, 03 Aug 2025 22:06:56 -0700 H1 General H1 PEM - Jitter peaks below 40 Hz remain in cleaned spectra https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86160 <p>Author: robert.schofield@ligo.org</p><p>Report ID: 86160</p><p>We have many peaks below 40 Hz that couple, at least partly, through input beam jitter. Last summer Sam and Genevieve determined that a wide variety of site equipment produced these peaks, including the office area air handler, mini-splits in the CER, and chiller compressors for the main HVAC (<a href="https://dcc.ligo.org/LIGO-G2402140">LIGO-G2402140</a>).&nbsp; The figure shows that there is coherence between DARM and the IMC WFS that might be used to clean these low frequency peaks, but that they are currently not being cleaned.</p> <p>Eventually, we would rather not have peaks that need cleaning, but instead, reduce the source vibration and/or the vibration coupling to DARM. I think that the best plan is to reduce the source vibration of the largest peaks, but to mainly focus on reducing the coupling, because many of these peaks are just 2-5 times the vibration background at the coupling sites, so even eliminating the vibration of the sources will not be enough to get us to our design sensitivity.</p> <p>The coupling of relatively low amplitude vibrations at low frequencies seems to be associated with coupling resonances. For example, when one of the frequencies of the office area air handler drifted into the 35Hz peak frequency of one of these coupling resonances, the peak in DARM was huge, but was greatly reduced by changing the operation frequency of the air handler (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=82986">82986</a>). &nbsp;Ill try to map out these low frequency coupling resonances during commissioning periods as a step in understanding their cause.&nbsp; But for now, it would be nice to see how much we can reduce the peaks with cleaning.</p> DetChar <!--- Output file_0_86160 div --> <div id="file_0_86160" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86160 div --> </div> <!--- Output files_0_86160 div --> <div id="files_0_86160" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86160_20250803164159_Fig1-Strain-and-jitter.pdf" target="blank">Fig1-Strain-and-jitter.pdf</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86160 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86160 robert.schofield@ligo.org Sun, 03 Aug 2025 17:41:09 -0700 H1 PEM H1 General - Sunday Eve Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86161 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86161</p><p><strong>TITLE:</strong> 08/03 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 152Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Oli<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 14mph Gusts, 9mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.03 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.07 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong><br /> <br /> H1 has been locked for 2 Hours and 20 minutes.<br /> All systems seem to be functioning well.<br /> Hoping for a smooth shift of Observing.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86161 anthony.sanchez@ligo.org Sun, 03 Aug 2025 16:50:21 -0700 H1 General H1 General - Ops Day Shift End https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86159 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86159</p><p><strong>TITLE:</strong> 08/03 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 155Mpc<br /> <strong>INCOMING OPERATOR:</strong> Tony<br /> <strong>SHIFT SUMMARY:</strong> Currently Observing at 155Mpc and have been Locked for a little over 2 hours. One <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86157">lockloss</a> today and after some issues with ALS not wanting to stay locked (partially due to ground motion, partially unknown), after an initial alignment we were able to relock fine. We dropped out of Observing once due to the squeezer unlocking but it was able to fix itself.<br /> <strong>LOG:</strong></p> <p>18:05 <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86157">Lockloss</a><br /> &nbsp;&nbsp;&nbsp; - Lockloss from PRMI/DRMI multiple times due to ALSX or Y unlocking<br /> &nbsp;&nbsp;&nbsp; - Ran an initial alignment<br /> 21:19 NOMINAL_LOW_NOISE<br /> &nbsp;&nbsp;&nbsp; 21:21 Observing<br /> &nbsp;&nbsp;&nbsp; 22:10 Out of Observing due to SQZer unlock<br /> &nbsp;&nbsp;&nbsp; 22:15 Back into Observing</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86159 oli.patane@ligo.org Sun, 03 Aug 2025 16:29:09 -0700 H1 General H1 General - Comment to Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86158 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86158</p><p>21:21 UTC Back to Observing</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86158 oli.patane@ligo.org Sun, 03 Aug 2025 14:22:27 -0700 H1 General H1 General - Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86157 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86157</p><p>Lockloss at <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi/event/1438279575">2025-08-03 18:05UTC</a> after over 7.5 hour locked</p> Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86157 oli.patane@ligo.org Sun, 03 Aug 2025 11:24:45 -0700 H1 General LHO VE - Sun CP1 Fill https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86156 <p>Author: david.barker@ligo.org</p><p>Report ID: 86156</p><p><strong>Sun Aug 03 10:08:00 2025 INFO: Fill completed in 7min 56secs</strong></p> <p>&nbsp;</p> <!--- Output file_1_86156 div --> <div id="file_1_86156" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86156 div --> </div> <!--- Output files_1_86156 div --> <div id="files_1_86156" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86156_20250803101616_CP1-1212.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86156_20250803101616_CP1-1212.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86156 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86156 david.barker@ligo.org Sun, 03 Aug 2025 10:16:19 -0700 LHO VE H1 General - Back to Observing WITH Squeezing https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86155 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86155</p><p>After LLO dropped out, Jenne gave the OK to try to get squeezing back. The FC took a handful of minutes of trying and failing but then just worked. I used &lt;a href=&quot;https://cdswiki.ligo-wa.caltech.edu/wiki/ObservationWithOrWithoutSqueezing&quot;&gt;Ryan S&#39;s script&lt;/a&gt; to get us back to being able to observe with sqz and we are back to Observing.</p> <p>Out of Observing from 1539-1546UTC.</p> SQZ https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86155 thomas.shaffer@ligo.org Sun, 03 Aug 2025 08:49:15 -0700 H1 General LHO General - Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86154 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86154</p><p><strong>TITLE:</strong> 08/03 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 130Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Corey<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 9mph Gusts, 3mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.02 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.06 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong> The IFO is still in Observing <strong>without</strong> squeezing as Corey had left it. I&#39;ll give a squeezer a call as soon as I can organize my already impromptu morning.</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86154 thomas.shaffer@ligo.org Sun, 03 Aug 2025 07:39:03 -0700 LHO General H1 SQZ - OWL Shift Wake Up Due To SQZ FC At 3:33amPDT....Eventually Went To Observing WITHOUT SQZ https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86153 <p>Author: corey.gray@ligo.org</p><p>Report ID: 86153</p><p>Looks like H1 went down due to an EQ (probably M6.8 Russia EQ) 4+hrs ago, and was at NLN but having SQZ Issues:</p> <ul> <li>SQZ FC was having trouble getting past FC ASC ON.</li> <li>Took MAnager to DOWN &amp; started following SQZ Wiki.</li> <li>OPO_LR needed to be taken to Nominal state.</li> <li>CLF_LR taken to Nominal state</li> <li>FC taken to GR LOCKED, but trans_c_lf_output was only at about 75 (less than nominal 100), so worked on FC Alignment. <ul> <li>Took me a while to find the &quot;FC Servo&quot; button on the SQZ Overview---my display has everything reall small, and I don&#39;t have my glasses on...still waking up).</li> <li>Once I got things set up, I was only able to maximize the trans c lf output up to about 80.&nbsp; Didn&#39;t feel like I improved it much.&nbsp; And while doing this I was looking at the FC Trans GR camera, but that just looked like a 00 spot, so not really giving me an idea of if pitch or yaw needed.&nbsp; (I&#39;m guessing the camera is useful if you are not on a 00 mode.)</li> <li>Moved on</li> </ul> </li> <li>Took Manager to FDS, but FC was not able to get GR LOCKED, so went back to wiki since &quot;everything was not fine&quot; yet.</li> <li>Started trending FC1/2 pointing.....but also looked alog for any recent FC issues</li> <li>FC&#39;s trans has not been at 100 for almost 2-weeks.&nbsp; :( <ul> <li>Because of this, this is why I&#39;m hesitant to move FC1 in yaw (that is the only thing which is currently a little off since the last lock.....but maybe I should at this point?&nbsp; Because for FC alignment, I was only moving FC2 for alignment touch up.&nbsp;</li> <li>Moved FC1&#39;s Yaw to get it from a witness value of -199 back to -206 (where it was for the last lock).</li> </ul> </li> <li>In the alogs, soundsing like TJ had the same exact situation I&#39;m having on 7/31(<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86113">alog</a>), but it looks like SQZ randomly came back for him. <ul> <li>For my 2nd go around with touching up FC alignment, I was only getting up to about 50 (vs 80 my first time).&nbsp; :(</li> <li>Going to try going to FDS....but still had FC issues.&nbsp;</li> <li>But did happen to get the FC trans relock to a better value back to just under 80 (but only for a few seconds and then it lost lock, and then relocked at this higher value.....these locks stopped me from restoring FC1 yaw from the move I made to get it to where it was before the EQ.</li> </ul> </li> <li>At this point, I feel like I have not progressed anywhere with FC (still loses lock at the ASC_ON step.</li> <li>The last thing I was considering, was trying the OPO temperature adjustment (which TJ mentions from an Oli <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85660">alog</a>).....but at this point, H1 has been waiting for SQZ for 2hrs &amp; I have been up that long, too (at 535am).&nbsp; So I&#39;m also considering just not Squeezing.... <ul> <li>Also was hoping SQZ would just come back on its own as it did for TJ on 7/31 while he was troubleshooting, but no luck on that so far.</li> <li>NOTE:&nbsp; For this OPO Temperature adustment, Oli did have a much better trans output (of 115! vs our sub-80).&nbsp; So not really going to be surprised if this does anything in this case.</li> </ul> </li> <li>Did optimize the OPO Temperature a bit, but this had no improvement for the FC locking (this is even after a few more rounds of FC2 alignment touch-ups....where it would sort of get a little over 80.....but still no luck).</li> <li>Running the RyanS <a href="https://cdswiki.ligo-wa.caltech.edu/wiki/ObservationWithOrWithoutSqueezing">script</a> to go to <strong>Observing WITHOUT Squeezing</strong>&nbsp; (this automatically took H1 to Observing as soon as I took 3 Sqz nodes to their No Squeezing NOMINAL states.</li> <li>And after about 2.5hrs (1024-1255utc) of trying, H1 is back to Observing (without Squeezing) at 555am PDT.&nbsp; Now to see if I should stay up or try to get sleep (as the sun is now in my eyes as I click &quot;POST TO LOGBOOK&quot;).</li> <li>I&#39;m attaching screenshots of FC1 &amp; FC2 alignment and also the OPO Temperature change.</li> </ul> <p>Frustration NOTES:&nbsp;</p> <ul> <li>My NoMachine is not as fast as working in the Control Room.&nbsp; So everything was a pain while trying to wake up</li> <li>Making ndscopes for restoring FC1 &amp; 2 took me time (still not sure if that was even going to be worth the trouble since the FC output hasn&#39;t been much above 80 anyways (vs the desired 100+ in the wiki). <ul> <li>Really the only FC pointing which looks like it took a big step since the last time the SQZ was locking was FC1 yaw.</li> <li>BUT.....is this really a thing since the Trans has only been at about 80 lately (last 12 days)??</li> </ul> </li> <li>In the wiki for FC, I don&#39;t know what this lines means: <ul> <li><em>&quot;FC ASC &quot;gracefully clear history&quot; is this correct?</em>&quot;</li> </ul> </li> <li>Only having one screen to work with also makes it tough.&nbsp; For this particular squeezer issue, I have tons of scopes, guardians and medms open and its hard to keep track of all my windows.&nbsp;</li> </ul> SQZ <!--- Output file_1_86153 div --> <div id="file_1_86153" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86153 div --> </div> <!--- Output files_1_86153 div --> <div id="files_1_86153" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86153_20250803060222_Screenshot_2025-08-03_05-05-34.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86153_20250803060222_Screenshot_2025-08-03_05-05-34.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86153_20250803060321_Screenshot_2025-08-03_06-03-04.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86153_20250803060321_Screenshot_2025-08-03_06-03-04.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86153 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86153 corey.gray@ligo.org Sun, 03 Aug 2025 06:05:14 -0700 H1 SQZ H1 General - Saturday Ops Shift End https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86152 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86152</p><p><strong>TITLE:</strong> 08/03 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 151Mpc<br /> <strong>INCOMING OPERATOR:</strong> Corey<br /> <strong>SHIFT SUMMARY:</strong><br /> H1 has reached 24 Hours of continuous lock!<br /> All systems lookin good.<br /> No issues all night.<br /> Passing Corey a locked IFO for his OWL shift.<br /> &nbsp;<br /> <strong>LOG:</strong>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p> <table> <tbody> <tr> <th>Start Time</th> <th>System</th> <th>Name</th> <th>Location</th> <th>Lazer_Haz</th> <th>Task</th> <th>Time End</th> </tr> <tr> <td>00:00</td> <td>SPI</td> <td>Tony</td> <td>PCAL Lab</td> <td>Yes</td> <td>Testing slides</td> <td>00:05</td> </tr> </tbody> </table> <p>&nbsp;</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86152 anthony.sanchez@ligo.org Sat, 02 Aug 2025 22:00:07 -0700 H1 General H1 General - Saturday Ops Eve Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86151 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86151</p><p><strong>TITLE:</strong> 08/02 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 152Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Oli<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 16mph Gusts, 10mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.04 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.06 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong><br /> H1 has been Locked for 19 Hours now with decent range.<br /> No issues to report.<br /> <br /> &nbsp;</p> <p>&nbsp;</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86151 anthony.sanchez@ligo.org Sat, 02 Aug 2025 16:52:35 -0700 H1 General H1 General - Ops Day Shift End https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86150 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86150</p><p><strong>TITLE:</strong> 08/02 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 154Mpc<br /> <strong>INCOMING OPERATOR:</strong> Tony<br /> <strong>SHIFT SUMMARY:</strong>We are Observing at 149 Mpc and have been Locked for almost 19 hours. Besides the <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86148">calibration measurement </a>today, we&#39;ve been Observing the rest of my shift.<br /> <strong>LOG:</strong></p> <p>14:30UTC Observing and have been Locked for 9:44 hours<br /> &nbsp;&nbsp;&nbsp; 14:30 Earthquake mode activated<br /> &nbsp;&nbsp;&nbsp; 15:25 Back to CALM<br /> &nbsp;&nbsp;&nbsp; 18:18 Earthquake mode<br /> &nbsp;&nbsp;&nbsp; 18:31 Left Observing to run calibration suite<br /> &nbsp;&nbsp;&nbsp; 18:31 NLN_CAL_MEAS<br /> &nbsp;&nbsp;&nbsp; 19:03 NOMINAL_LOW_NOISE<br /> &nbsp;&nbsp;&nbsp; 19:03 Observing<br /> &nbsp;&nbsp;&nbsp; 20:25 <a href="https://gracedb.ligo.org/superevents/S250802dn/view/">Superevent S250802dn</a></p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86150 oli.patane@ligo.org Sat, 02 Aug 2025 16:31:42 -0700 H1 General H1 SUS - Satamp swap OSEM noise part 4 (MC1, MC3, ETMY M0/R0, TMSY) https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86149 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86149</p><p>On July 22nd, Fil swapped the satamps for MC1, MC3, ETMY M0/R0, and TMSY (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85922">85922</a>). Here are the differences in the noise performance for each before and after the swap.</p> <p>Finding times where ISC control wasn&#39;t on and the chambers were in nominal states (not earthquake or maintenance) was hard to do because of all the earthquakes we&#39;ve been having. ETMY M0 and R0 both were hard to find good times for, so a couple of times chosen are not the best showcase of the new noise floor. For example, ETMY M0 L &#39;after&#39; still has a lot of lower frequency noise that I wasn&#39;t able to regress out, and ETMY R0 L, T, and V &#39;after&#39; also all clearly all have excess low frequency noise remaining due to an earthquake going through at the time. I think you can still generally get an idea of how much better the noise is though. I can run them again when we get a better comparison time.</p> <p><u><strong>MC1</strong></u><br /> <strong>Results:</strong><br /> <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134306_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200.pdf">/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC1/SAGM1/Results/allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200.pdf</a><br /> r12495<br /> <strong>Data:</strong><br /> /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC1/SAGM1/Data/dampRegress_H1SUSMC1_M1_1437192600_1200.mat<br /> /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC1/SAGM1/Data/dampRegress_H1SUSMC1_M1_1437240215_1200.mat<br /> r12495</p> <p><u><strong>MC3</strong></u><br /> <strong>Results:</strong><br /> <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134316_allDampRegressCompare_H1SUSMC3_M1_NoiseComparison_1437115850vs1437282002-1200.pdf">/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC3/SAGM1/Results/allDampRegressCompare_H1SUSMC3_M1_NoiseComparison_1437115850vs1437282002-1200.pdf</a><br /> r12496<br /> <strong>Data:</strong><br /> /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC3/SAGM1/Data/dampRegress_H1SUSMC3_M1_1437115850_1200.mat<br /> /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/MC3/SAGM1/Data/dampRegress_H1SUSMC3_M1_1437282002_1200.mat<br /> r12496</p> <p><u><strong>TMSY</strong></u><br /> <strong>Results:</strong><br /> <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134343_allDampRegressCompare_H1SUSTMSY_M1_NoiseComparison_1437213557vs1437257352-1200.pdf">/ligo/svncommon/SusSVN/sus/trunk/TMTS/H1/TMSY/SAGM1/Results/allDampRegressCompare_H1SUSTMSY_M1_NoiseComparison_1437213557vs1437257352-1200.pdf</a><br /> r12497<br /> <strong>Data:</strong><br /> /ligo/svncommon/SusSVN/sus/trunk/TMTS/H1/TMSY/SAGM1/Data/dampRegress_H1SUSTMSY_M1_1437213557_1200.mat<br /> /ligo/svncommon/SusSVN/sus/trunk/TMTS/H1/TMSY/SAGM1/Data/dampRegress_H1SUSTMSY_M1_1437257352_1200.mat<br /> r12497</p> <p><u><strong>ETMY</strong></u><br /> <em><strong>M0</strong></em><br /> <strong>Results:</strong><br /> <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134400_allDampRegressCompare_H1SUSETMY_M0_NoiseComparison_1436521059vs1437280243-1200.pdf">/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGM0/Results/allDampRegressCompare_H1SUSETMY_M0_NoiseComparison_1436521059vs1437280243-1200.pdf</a><br /> r12498<br /> <strong>Data:</strong><br /> /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGM0/Data/dampRegress_H1SUSETMY_M0_1436521059_1200.mat<br /> /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGM0/Data/dampRegress_H1SUSETMY_M0_1437280243_1200.mat<br /> r12498</p> <p><strong><em>R0</em></strong><br /> <strong>Results:</strong><br /> <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134411_allDampRegressCompare_H1SUSETMY_R0_NoiseComparison_1435436097vs1437438025-1200.pdf">/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGR0/Results/allDampRegressCompare_H1SUSETMY_R0_NoiseComparison_1435436097vs1437438025-1200.pdf</a><br /> r12499<br /> <strong>Data:</strong><br /> /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGR0/Data/dampRegress_H1SUSETMY_R0_1435436097_1200.mat<br /> /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGR0/Data/dampRegress_H1SUSETMY_R0_1437438025_1200.mat<br /> r12499</p> <!--- Output file_0_86149 div --> <div id="file_0_86149" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86149 div --> </div> <!--- Output files_0_86149 div --> <div id="files_0_86149" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134306_allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200.pdf" target="blank">allDampRegressCompare_H1SUSMC1_M1_NoiseComparison_1437192600vs1437240215-1200.pdf</a></div> </div> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134316_allDampRegressCompare_H1SUSMC3_M1_NoiseComparison_1437115850vs1437282002-1200.pdf" target="blank">allDampRegressCompare_H1SUSMC3_M1_NoiseComparison_1437115850vs1437282002-1200.pdf</a></div> </div> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134343_allDampRegressCompare_H1SUSTMSY_M1_NoiseComparison_1437213557vs1437257352-1200.pdf" target="blank">allDampRegressCompare_H1SUSTMSY_M1_NoiseComparison_1437213557vs1437257352-1200.pdf</a></div> </div> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134400_allDampRegressCompare_H1SUSETMY_M0_NoiseComparison_1436521059vs1437280243-1200.pdf" target="blank">allDampRegressCompare_H1SUSETMY_M0_NoiseComparison_1436521059vs1437280243-1200.pdf</a></div> </div> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86149_20250802134411_allDampRegressCompare_H1SUSETMY_R0_NoiseComparison_1435436097vs1437438025-1200.pdf" target="blank">allDampRegressCompare_H1SUSETMY_R0_NoiseComparison_1435436097vs1437438025-1200.pdf</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86149 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86149 oli.patane@ligo.org Sat, 02 Aug 2025 14:01:46 -0700 H1 SUS H1 CAL - Calibration Measurement August 02, 2025 https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86148 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86148</p><p>This set of measurements was taken 13 hours into a lock so we were well thermalized.</p> <p>Report generated and can be found at <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86148_20250802121025_H1_calibration_report_20250802T183908Z.pdf">/ligo/groups/cal/H1/reports/20250802T183908Z/H1_calibration_report_20250802T183908Z.pdf</a></p> <p><strong><u>Broadband</u></strong><br /> start: 18:32:06 UTC (1438194744)<br /> end: 18:37:24 UTC (1438195062)<br /> output: /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250802T183213Z.xml</p> <p><strong><u>Simulines</u></strong><br /> start: 18:39:07 UTC (1438195165)<br /> end: 19:02:14 UTC (1438196552)<br /> output:<br /> /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20250802T183908Z.hdf5<br /> /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20250802T183908Z.hdf5<br /> /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20250802T183908Z.hdf5<br /> /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20250802T183908Z.hdf5<br /> /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20250802T183908Z.hdf5</p> <!--- Output file_1_86148 div --> <div id="file_1_86148" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86148 div --> </div> <!--- Output files_1_86148 div --> <div id="files_1_86148" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86148_20250802121020_2025-08-02_113319.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86148_20250802121020_2025-08-02_113319.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86148 div --> </div> <!-- Output break div. --> <div class="break"></div> <!--- Output file_0_86148 div --> <div id="file_0_86148" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86148 div --> </div> <!--- Output files_0_86148 div --> <div id="files_0_86148" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86148_20250802121025_H1_calibration_report_20250802T183908Z.pdf" target="blank">H1_calibration_report_20250802T183908Z.pdf</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86148 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86148 oli.patane@ligo.org Sat, 02 Aug 2025 12:11:13 -0700 H1 CAL LHO VE - Sat CP1 Fill https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86147 <p>Author: david.barker@ligo.org</p><p>Report ID: 86147</p><p><strong>Sat Aug 02 10:09:10 2025 INFO: Fill completed in 9min 6secs</strong></p> <p>&nbsp;</p> <!--- Output file_1_86147 div --> <div id="file_1_86147" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86147 div --> </div> <!--- Output files_1_86147 div --> <div id="files_1_86147" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86147_20250802102559_CP1-1210.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86147_20250802102559_CP1-1210.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86147 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86147 david.barker@ligo.org Sat, 02 Aug 2025 10:26:01 -0700 LHO VE H1 General - Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86145 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86145</p><p><strong>TITLE:</strong> 08/02 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 154Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Corey<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 6mph Gusts, 3mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.07 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.12 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong></p> <p>Currently Observing at 155 Mpc and have been Locked for almost 10 hours. One earthquake just started coming in and now it&#39;s <em>really</em> coming in and we just went into earthquake mode</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86145 oli.patane@ligo.org Sat, 02 Aug 2025 07:31:26 -0700 H1 General H1 General - Friday Eve Shift End Report. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86144 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86144</p><p><strong>TITLE:</strong> 08/02 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 148Mpc<br /> <strong>INCOMING OPERATOR:</strong> Corey<br /> <strong>SHIFT SUMMARY:</strong><br /> Inherited a Locked IFO.<br /> At 02:57:54 UTC H1 lost lock.<br /> <br /> I allowed H1 to try to relock itself, ISC_lock ended up in Aquire_PRMI with wonky flashes. So I did an Initial_Alignment.<br /> I reverted the <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86140">SEI SDF diffs</a> I accepted earlier today.<br /> <br /> The Initial_Alignment was mared with a tripped SRM Watchdog, but it seemed to complete and offload well enough.<br /> <br /> H1 was relocked at 4:51:05 UTC.&nbsp;<br /> <br /> <strong>LOG:</strong><br /> No Log</p> <p>&nbsp;</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86144 anthony.sanchez@ligo.org Fri, 01 Aug 2025 22:02:49 -0700 H1 General H1 General - Lockloss from NLN https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86143 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86143</p><p><a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1438138692">Lockloss from NLN 2025-08-02 02:57:54</a><br /> Looks like maybe it&#39;s an ASC excursion?</p> Lockloss <!--- Output file_1_86143 div --> <div id="file_1_86143" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86143 div --> </div> <!--- Output files_1_86143 div --> <div id="files_1_86143" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212310_Screenshot_2025-08-01_20-04-29.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212310_Screenshot_2025-08-01_20-04-29.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212316_Screenshot_2025-08-01_20-40-22.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212316_Screenshot_2025-08-01_20-40-22.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212324_Screenshot_2025-08-01_20-42-58.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212324_Screenshot_2025-08-01_20-42-58.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212331_Screenshot_2025-08-01_20-43-45.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212331_Screenshot_2025-08-01_20-43-45.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212337_Screenshot_2025-08-01_20-46-09.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212337_Screenshot_2025-08-01_20-46-09.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212344_Screenshot_2025-08-01_20-47-24.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212344_Screenshot_2025-08-01_20-47-24.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86143_20250801212353_Screenshot_2025-08-01_20-50-06.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86143_20250801212353_Screenshot_2025-08-01_20-50-06.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86143 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86143 anthony.sanchez@ligo.org Fri, 01 Aug 2025 21:30:35 -0700 H1 General H1 General - Comment to Friday Eve Shift Strarting Report. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86142 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86142</p><p>I reverted all of these SDF&#39;s for the SEI GS13 on HAM 2, 3, 4, &amp; 5 once we lost lock because Mr. Crouch said that those are older version of the filters.</p> <!--- Output file_1_86142 div --> <div id="file_1_86142" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86142 div --> </div> <!--- Output files_1_86142 div --> <div id="files_1_86142" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86142_20250801210455_Screenshot_2025-08-01_21-02-35.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86142_20250801210455_Screenshot_2025-08-01_21-02-35.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86142 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86142 anthony.sanchez@ligo.org Fri, 01 Aug 2025 21:05:00 -0700 H1 General H1 SQZ - Comment to squeezing at arm higher order modes https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86141 <p>Author: kevin.kuns@ligo.org</p><p>Report ID: 86141</p><p>We got three good sets of ADF measurements targeting the two X arm modes. One was taken before the ETMY ring heater was changed (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85514">85514</a>) and two were taken after. The gps start times of the upper sideband sweeps for each of these measurements are</p> <p>pre-RH change&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1433785394<br /> post-RH change 1 1436198864<br /> post-RH change 2 1436809945</p> <p>There are difficulties in calculating all of the squeezing metrics described in the ADF paper (<a href="https://doi.org/10.1103/PhysRevD.105.122005">PhysRevD.105.122005</a>), but the squeeze angle is relatively straightforward to calculate using equations (26), (33), and (34) of that paper. (All of the lower sidebands in those equations should be the conjugates of the lower sidebands.) The <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86141_20250801192611_dcpd_sqz_rot.png">first plot</a> shows the inferred squeeze angle for these three measurements along with the DCPD spectra for those times. These are consistent with what you would expect for the rotation generated from an astigmatic arm cavity and can probably be fit with a bit more work. The flat line above 10.6 kHz in the post-RH change 2 rotation is because we lost lock at the end of that measurement. The rotation is fairly constant which isn&#39;t surprising since the Y arm modes were mainly changed by the ETMY RH change. The change in the DCPD is likely due to a change in the laser noise coupling independent of any squeezing effects.</p> <p>The <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86141_20250801192620_compare_sqz_rot.png">second plot</a> compares these measurements with the ones that Sheila measured above. The data is noisy and there&#39;s about a 10 deg variation between the rotation inferred from mid SQZ + and mid SQZ - around the second peak but the mid-SQZ + magnitude and the mid-SQZ- frequency dependence are fairly consistent with the ADF measurements. Uncertainty in the NLG will propagate to uncertainty in the magnitude of the rotation in both cases.</p> <p>These plots can be made by running the following in the aligoNB environment</p> <p><code>pytest /ligo/gitcommon/squeezing/sqzutils/analysis/T_10kHz_ADF.py -s -k T_compare_10kHz</code></p> <!--- Output file_1_86141 div --> <div id="file_1_86141" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86141 div --> </div> <!--- Output files_1_86141 div --> <div id="files_1_86141" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86141_20250801192611_dcpd_sqz_rot.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86141_20250801192611_dcpd_sqz_rot.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86141_20250801192620_compare_sqz_rot.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86141_20250801192620_compare_sqz_rot.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86141 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86141 kevin.kuns@ligo.org Fri, 01 Aug 2025 19:53:21 -0700 H1 SQZ H1 General - Friday Eve Shift Strarting Report. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86140 <p>Author: anthony.sanchez@ligo.org</p><p>Report ID: 86140</p><p><strong>TITLE:</strong> 08/01 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 149Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Oli<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 21mph Gusts, 14mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.07 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.05 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong></p> <p>Observing reached at 23:43:12 UTC But only after spending 13 min trying to determine why there is are SEI SDF Diffs.<br /> We, (TJ, Oli, Me) decided to just accept them and hope for the best.<br /> <br /> &nbsp;</p> SEI <!--- Output file_1_86140 div --> <div id="file_1_86140" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86140 div --> </div> <!--- Output files_1_86140 div --> <div id="files_1_86140" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86140_20250801165203_Screenshot_2025-08-01_16-38-58.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86140_20250801165203_Screenshot_2025-08-01_16-38-58.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86140_20250801165211_Screenshot_2025-08-01_16-40-45.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86140_20250801165211_Screenshot_2025-08-01_16-40-45.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86140 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86140 anthony.sanchez@ligo.org Fri, 01 Aug 2025 16:52:50 -0700 H1 General H1 General - Ops Day Shift End https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86139 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86139</p><p><strong>TITLE:</strong> 08/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Earthquake<br /> <strong>INCOMING OPERATOR:</strong> Tony<br /> <strong>SHIFT SUMMARY:</strong> Currently in NLN, but waiting to go into Observing after we figure out some weird SDF diffs with ISIHAM2/3/4/5.<br /> <strong>LOG:</strong></p> <p>14:30UTC Relocking and in ACQUIRE_PRMI<br /> 15:23 NOMINAL_LOW_NOISE<br /> &nbsp;&nbsp;&nbsp; 15:25 Observing<br /> &nbsp;&nbsp;&nbsp; 18:06 Out of Observing due to SQZ unlock<br /> &nbsp;&nbsp;&nbsp; 18:12 Back into Observing<br /> &nbsp;&nbsp;&nbsp; 18:12 Out of Observing due to SQZ unlock<br /> &nbsp;&nbsp;&nbsp; 18:14 Back into Observing<br /> &nbsp;&nbsp;&nbsp; 18:15 Out of Observing due to SQZ unlock<br /> 18:45 <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86136">Lockloss</a><br /> &nbsp;&nbsp;&nbsp; - sat in DOWN for a bit due to high ground motion and wind<br /> &nbsp;&nbsp;&nbsp; - ALSX was unlocking 10 seconds into LOCKING_ALS<br /> 21:59 NOMINAL_LOW_NOISE<br /> &nbsp;&nbsp;&nbsp; - Needed to INIT HAM 2/3/4/5 ISI guardians to remove SPM (and SDF) differences - caused a lockloss<br /> 22:02 <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86138">Lockloss</a><br /> 22:54 NOMINAL_LOW_NOISE<br /> &nbsp;&nbsp;&nbsp; - Adjusted OPO temp and that got FC to lock<br /> &nbsp;&nbsp;&nbsp; - Issues with ISIHAM2/3/4/5 sdf diffs for GS13INF V1/2/3</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p> <table> <tbody> <tr> <th>Start Time</th> <th>System</th> <th>Name</th> <th>Location</th> <th>Lazer_Haz</th> <th>Task</th> <th>Time End</th> </tr> <tr> <td>15:05</td> <td>FAC</td> <td>Nelly</td> <td>OpticsLab</td> <td>n</td> <td>Tech clean</td> <td>15:17</td> </tr> <tr> <td>18:51</td> <td>VAC</td> <td>Gerardo</td> <td>FCES</td> <td>n</td> <td>Moving power supply</td> <td>19:51</td> </tr> <tr> <td>20:02</td> <td>&nbsp;</td> <td>Ibrahim</td> <td>CER</td> <td>n</td> <td>Grabbing laptop</td> <td>20:04</td> </tr> <tr> <td>20:03</td> <td>FAC</td> <td>Eric</td> <td>EY</td> <td>n</td> <td>Checking on chiller alarm</td> <td>20:27</td> </tr> <tr> <td>20:23</td> <td>&nbsp;</td> <td>Ibrahim</td> <td>CER</td> <td>n</td> <td>Getting another laptop</td> <td>20:26</td> </tr> <tr> <td>22:33</td> <td>VAC</td> <td>Gerardo</td> <td>FCES, FCET</td> <td>n</td> <td>Putting a couple labels on</td> <td>22:49</td> </tr> </tbody> </table> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86139 oli.patane@ligo.org Fri, 01 Aug 2025 16:43:33 -0700 H1 General LHO VE - Filter Cavity Tube Gets One More Gauge PT-CC7 https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86137 <p>Author: gerardo.moreno@ligo.org</p><p>Report ID: 86137</p><p>(Jordan V., Tony S., Gerardo M.)</p> <div> <p>Late entry</p> <p>To get the gauge working at the filter cavity tube cross C7 we pulled the EtherCAT cable from cross C7 to cross D1, this allowed us to daisy chain the gauges at both crosses.&nbsp; To land the EtherCAT cable both ends were terminated, thanks Tony. To get power to the gauge we used one of the outlets in the filter cavity enclosure and a small din rail mountable power supply, the supply provides 24 VDC.&nbsp; Patrick took care of the software, see his aLOG <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86066">here</a>.</p> <p>Currently we have the following items valved out along the filter cavity, two ion pumps;IPFCC6, IPFCC8, and the gauge PTCC7.&nbsp; We plan to incorporate them to the main vacuum volume on the next couple of weeks.&nbsp; Pressure at the gauge is low, thus we need to pump its volume down using an aux cart and a small turbo pump.</p> </div> VE <!--- Output file_1_86137 div --> <div id="file_1_86137" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86137 div --> </div> <!--- Output files_1_86137 div --> <div id="files_1_86137" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86137_20250801144238_MKSGaugePTCC7Install.jpg" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86137_20250801144238_MKSGaugePTCC7Install.jpg" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86137_20250801144253_MKSGaugePTCC7GaugeInst.jpg" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86137_20250801144253_MKSGaugePTCC7GaugeInst.jpg" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86137_20250801161438_MKSGaugePTCC7Power.jpg" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86137_20250801161438_MKSGaugePTCC7Power.jpg" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86137 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86137 gerardo.moreno@ligo.org Fri, 01 Aug 2025 16:18:44 -0700 LHO VE H1 General - Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86138 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86138</p><p>Lockloss at <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi/event/1438120946">2025-08-01 22:02 UTC</a> after 3 minutes in NLN. We couldn&#39;t go into Observing because of SPM differences causing SDF diffs in the guardians for ISIHAM2/3/4/5. Last time we had this, I asked Jim what to do and he said to just INIT the guardians, and it caused a glitch, but we did not lose lock, and he said INITing them should not cause glitches or locklosses (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85809">85809</a>). Today, I did the same thing and went to INIT the guardians, but when doing it for the first one, ISIHAM2, it caused a glitch and we lost lock from it.</p> Lockloss, SEI https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86138 oli.patane@ligo.org Fri, 01 Aug 2025 15:07:35 -0700 H1 General H1 General - Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86136 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86136</p><p>Lockloss at <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi/event/1438109161">2025-08-01 18:45UTC</a> due to earthquake</p> <p>We are holding in DOWN due to the earthquake</p> Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86136 oli.patane@ligo.org Fri, 01 Aug 2025 11:55:31 -0700 H1 General LHO VE - Fri CP1 Fill https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86135 <p>Author: david.barker@ligo.org</p><p>Report ID: 86135</p><p><strong>Fri Aug 01 10:11:21 2025 INFO: Fill completed in 11min 17secs</strong></p> <p>&nbsp;</p> <!--- Output file_1_86135 div --> <div id="file_1_86135" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86135 div --> </div> <!--- Output files_1_86135 div --> <div id="files_1_86135" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86135_20250801102546_CP1-1209.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86135_20250801102546_CP1-1209.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86135 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86135 david.barker@ligo.org Fri, 01 Aug 2025 10:25:48 -0700 LHO VE H1 General - Comment to Lockloss @ 03:36 UTC https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86134 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86134</p><p><a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86134_20250801090718_2025-08-01_090344.png">It looks like all the QUADs suddenly moved a lot and caused the lockloss,</a> but their movement doesn&#39;t look like it was caused by the ETMX glitch.&nbsp; I&#39;m not sure what would have caused it if the ground was calm at the time? ASC and LSC channels all look fine and I couldn&#39;t find any other evidence of an excursion.</p> <!--- Output file_1_86134 div --> <div id="file_1_86134" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86134 div --> </div> <!--- Output files_1_86134 div --> <div id="files_1_86134" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86134_20250801090718_2025-08-01_090344.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86134_20250801090718_2025-08-01_090344.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86134 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86134 oli.patane@ligo.org Fri, 01 Aug 2025 09:07:30 -0700 H1 General H1 PSL - PSL Status Report Weekly FAMIS https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86133 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86133</p><p>Closes FAMIS#<a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?RequestID=26433">26433</a>, last checked <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86020">86020</a></p> <p>Everything is looking good besides the PMC reflected power being a bit high - <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86133_20250801083102_2025-08-01_083010.png">it looks like it&#39;s been increasing over the past month</a>.</p> <p><br /> <strong>Laser Status</strong>:<br /> &nbsp;&nbsp;&nbsp; NPRO output power is <strong>1.866</strong>W<br /> &nbsp;&nbsp;&nbsp; AMP1 output power is <strong>69.95</strong>W<br /> &nbsp;&nbsp;&nbsp; AMP2 output power is <strong>140.6</strong>W<br /> &nbsp;&nbsp;&nbsp; NPRO watchdog is <strong>GREEN</strong><br /> &nbsp;&nbsp;&nbsp; AMP1 watchdog is <strong>GREEN</strong><br /> &nbsp;&nbsp;&nbsp; AMP2 watchdog is <strong>GREEN</strong><br /> &nbsp;&nbsp;&nbsp; PDWD watchdog is <strong>GREEN</strong></p> <p><strong>PMC</strong>:<br /> &nbsp;&nbsp;&nbsp; It has been locked <strong>2</strong> days, <strong>2</strong> hr <strong>18</strong> minutes<br /> &nbsp;&nbsp;&nbsp; Reflected power = <strong>23.73</strong>W<br /> &nbsp;&nbsp;&nbsp; Transmitted power = <strong>105.5</strong>W<br /> &nbsp;&nbsp;&nbsp; PowerSum = <strong>129.3</strong>W</p> <p><strong>FSS</strong>:<br /> &nbsp;&nbsp;&nbsp; It has been locked for <strong>0</strong> days <strong>2</strong> hr and <strong>47</strong> min<br /> &nbsp;&nbsp;&nbsp; TPD[V] = <strong>0.7741</strong>V</p> <p><strong>ISS</strong>:<br /> &nbsp;&nbsp;&nbsp; The diffracted power is around <strong>3.8</strong>%<br /> &nbsp;&nbsp;&nbsp; Last saturation event was <strong>0</strong> days <strong>2</strong> hours and <strong>47</strong> minutes ago</p> <p><br /> <strong>Possible Issues:</strong><br /> &nbsp;&nbsp;&nbsp; PMC reflected power is high</p> <!--- Output file_1_86133 div --> <div id="file_1_86133" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86133 div --> </div> <!--- Output files_1_86133 div --> <div id="files_1_86133" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86133_20250801083102_2025-08-01_083010.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86133_20250801083102_2025-08-01_083010.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86133 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86133 oli.patane@ligo.org Fri, 01 Aug 2025 08:31:19 -0700 H1 PSL H1 General - Comment to Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86132 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86132</p><p>15:25 UTC Back to Observing</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86132 oli.patane@ligo.org Fri, 01 Aug 2025 08:25:54 -0700 H1 General H1 SEI - Seismometer Mass Check Monthly FAMIS https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86131 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86131</p><p>Closes FAMIS#<a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?RequestID=26504">26504</a>, last checked <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85571">85571</a></p> <p><strong><u>T240</u></strong> (channels averaged between 2025-08-01 15:08:44 - 15:08:54 UTC)<br /> Averaging Mass Centering channels for 10 [sec] ...<br /> 2025-08-01 08:08:54.266493</p> <p>There are 12 T240 proof masses out of range ( &gt; 0.3 [V] )!<br /> ETMX T240 2 DOF X/U = -1.424 [V]<br /> ETMX T240 2 DOF Y/V = -1.323 [V]<br /> ETMX T240 2 DOF Z/W = -0.982 [V]<br /> ITMX T240 1 DOF X/U = -2.045 [V]<br /> ITMX T240 1 DOF Z/W = 0.443 [V]<br /> ITMX T240 3 DOF X/U = -2.17 [V]<br /> ITMY T240 3 DOF X/U = -0.963 [V]<br /> ITMY T240 3 DOF Z/W = -2.619 [V]<br /> BS T240 1 DOF Y/V = -0.351 [V]<br /> BS T240 3 DOF Z/W = -0.431 [V]<br /> HAM8 1 DOF Y/V = -0.541 [V]<br /> HAM8 1 DOF Z/W = -0.871 [V]</p> <p><br /> All other proof masses are within range ( &lt; 0.3 [V] ):<br /> ETMX T240 1 DOF X/U = -0.121 [V]<br /> ETMX T240 1 DOF Y/V = -0.125 [V]<br /> ETMX T240 1 DOF Z/W = -0.158 [V]<br /> ETMX T240 3 DOF X/U = -0.094 [V]<br /> ETMX T240 3 DOF Y/V = -0.182 [V]<br /> ETMX T240 3 DOF Z/W = -0.111 [V]<br /> ETMY T240 1 DOF X/U = -0.015 [V]<br /> ETMY T240 1 DOF Y/V = 0.105 [V]<br /> ETMY T240 1 DOF Z/W = 0.155 [V]<br /> ETMY T240 2 DOF X/U = -0.123 [V]<br /> ETMY T240 2 DOF Y/V = 0.156 [V]<br /> ETMY T240 2 DOF Z/W = 0.02 [V]<br /> ETMY T240 3 DOF X/U = 0.163 [V]<br /> ETMY T240 3 DOF Y/V = 0.004 [V]<br /> ETMY T240 3 DOF Z/W = 0.071 [V]<br /> ITMX T240 1 DOF Y/V = 0.244 [V]<br /> ITMX T240 2 DOF X/U = 0.164 [V]<br /> ITMX T240 2 DOF Y/V = 0.252 [V]<br /> ITMX T240 2 DOF Z/W = 0.218 [V]<br /> ITMX T240 3 DOF Y/V = 0.104 [V]<br /> ITMX T240 3 DOF Z/W = 0.117 [V]<br /> ITMY T240 1 DOF X/U = 0.038 [V]<br /> ITMY T240 1 DOF Y/V = 0.096 [V]<br /> ITMY T240 1 DOF Z/W = -0.0 [V]<br /> ITMY T240 2 DOF X/U = 0.022 [V]<br /> ITMY T240 2 DOF Y/V = 0.244 [V]<br /> ITMY T240 2 DOF Z/W = 0.089 [V]<br /> ITMY T240 3 DOF Y/V = 0.044 [V]<br /> BS T240 1 DOF X/U = -0.08 [V]<br /> BS T240 1 DOF Z/W = 0.162 [V]<br /> BS T240 2 DOF X/U = 0.068 [V]<br /> BS T240 2 DOF Y/V = 0.161 [V]<br /> BS T240 2 DOF Z/W = 0.027 [V]<br /> BS T240 3 DOF X/U = -0.161 [V]<br /> BS T240 3 DOF Y/V = -0.294 [V]<br /> HAM8 1 DOF X/U = -0.216 [V]</p> <p>&nbsp;</p> <p><u><strong>STS</strong></u> (channels averaged between 2025-08-01 15:09:20 - 15:09:30 UTC)<br /> Averaging Mass Centering channels for 10 [sec] ...</p> <p>2025-08-01 08:09:30.264056<br /> There are 2 STS proof masses out of range ( &gt; 2.0 [V] )!<br /> STS EY DOF X/U = -4.662 [V]<br /> STS EY DOF Z/W = 2.344 [V]</p> <p><br /> All other proof masses are within range ( &lt; 2.0 [V] ):<br /> STS A DOF X/U = -0.46 [V]<br /> STS A DOF Y/V = -0.752 [V]<br /> STS A DOF Z/W = -0.633 [V]<br /> STS B DOF X/U = 0.163 [V]<br /> STS B DOF Y/V = 0.96 [V]<br /> STS B DOF Z/W = -0.374 [V]<br /> STS C DOF X/U = -0.762 [V]<br /> STS C DOF Y/V = 0.795 [V]<br /> STS C DOF Z/W = 0.575 [V]<br /> STS EX DOF X/U = -0.135 [V]<br /> STS EX DOF Y/V = -0.089 [V]<br /> STS EX DOF Z/W = 0.05 [V]<br /> STS EY DOF Y/V = 1.196 [V]<br /> STS FC DOF X/U = 0.198 [V]<br /> STS FC DOF Y/V = -1.143 [V]<br /> STS FC DOF Z/W = 0.603 [V]</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86131 oli.patane@ligo.org Fri, 01 Aug 2025 08:14:25 -0700 H1 SEI H1 General - Comment to Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86130 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86130</p><p><a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86130_20250801073857_2025-08-01_073845.png">ndscope</a> showing when we lost lock relative to the ground motion.</p> <!--- Output file_1_86130 div --> <div id="file_1_86130" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86130 div --> </div> <!--- Output files_1_86130 div --> <div id="files_1_86130" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86130_20250801073857_2025-08-01_073845.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86130_20250801073857_2025-08-01_073845.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86130 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86130 oli.patane@ligo.org Fri, 01 Aug 2025 07:39:44 -0700 H1 General H1 General - Ops Day Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86129 <p>Author: oli.patane@ligo.org</p><p>Report ID: 86129</p><p><strong>TITLE:</strong> 08/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Lock Acquisition<br /> <strong>OUTGOING OPERATOR:</strong> Corey<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 9mph Gusts, 6mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.06 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.05 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong></p> <p>Currently relocking and in ACQUIRE_PRMI. Looks like the last lockloss at <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi/event/1438086903">2025-08-01 12:34UTC</a> was probably from an earthquake</p> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86129 oli.patane@ligo.org Fri, 01 Aug 2025 07:34:40 -0700 H1 General LHO General - Ops Eve Shift Summary https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86128 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86128</p><p><strong>TITLE:</strong> 08/01 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Lock Acquisition<br /> <strong>INCOMING OPERATOR:</strong> Corey<br /> <strong>SHIFT SUMMARY: </strong>Straightforward shift with calibration sweeps run opportunistically and just one lockloss, which H1 is still relocking from due to ground motion. Currently relocking and up to ACQUIRE_PRMI.</p> <ul> <li>23:38 - Dropped observing for calibration sweeps - <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86125">alog86125</a></li> <li>00:11 - Resumed observing</li> <li>03:36 - Lockloss - <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86127">alog86127</a></li> </ul> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86128 ryan.short@ligo.org Thu, 31 Jul 2025 22:14:56 -0700 LHO General H1 General - Lockloss @ 03:36 UTC https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86127 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86127</p><p>Lockloss @ 03:36 UTC after 7 hours locked - <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1438054626">link to lockloss tool</a></p> <p>Possibly an ETM glitch? Hard to say, but the ground was mostly calm at the time, although it&#39;s shaking more now as H1 attempts to relock.</p> Lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86127 ryan.short@ligo.org Thu, 31 Jul 2025 21:15:02 -0700 H1 General H1 ISC - change in the meaning of OMC-DCPD_524K channels https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86124 <p>Author: sheila.dwyer@ligo.org</p><p>Report ID: 86124</p><p>This morning I changed the matrix that sends DCPD ADC channels to the 524 kHz test channels that Jeff set up and described in <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=82686">82686</a>, hoping that this might be useful for following up on some of investigations that Kiet has done on violin mode contamination. <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85026">85026</a></p> <p>Right now, I&#39;ve set them up to send the 4 individual ADC channels for DCPD A to all 4 filters, so that A CH0 is A1, A CH1 is B1, A CH2 is A2, and A CH3 is B2.&nbsp;</p> <p>One striking thing in the first look I&#39;ve taken at these spectra is that the rms is dominated by high frequency lines (and somewhat the 1kHz violin modes), 10215.3 Hz (f1) is the loudest followed by 10436.9 Hz (f2) and 8154.8 Hz (f3).&nbsp; We have been wondering if a quadratic response of the ADC could explain the violin mode contamination, so I checked the 6 combinations of these frequencies, at this resolution I only see a peak at f2 + f3 = 18591 Hz.&nbsp;</p> <p>&nbsp;</p> DetChar <!--- Output file_1_86124 div --> <div id="file_1_86124" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86124 div --> </div> <!--- Output files_1_86124 div --> <div id="files_1_86124" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86124_20250731173151_ADC_individual_channels.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86124_20250731173151_ADC_individual_channels.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86124_20250731173323_ADC_individual_channels_spectra.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86124_20250731173323_ADC_individual_channels_spectra.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86124 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86124 sheila.dwyer@ligo.org Thu, 31 Jul 2025 17:34:12 -0700 H1 ISC H1 SEI - Comment to HAM8 H1 gs13 causing .4-ish hz peak again, digital gain got reverted during vent https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86126 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86126</p><p>After running calibration sweeps this evening and while H1 was still out of observing, I updated the GS13 gain as Jim describes above. The filter cavity saw some motion after I did this, but after a minute or two, things settled back out. I then accepted the SDF diff (screenshot attached) and took H1 back to observing.</p> OpsInfo, SQZ <!--- Output file_1_86126 div --> <div id="file_1_86126" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86126 div --> </div> <!--- Output files_1_86126 div --> <div id="files_1_86126" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86126_20250731172137_ISIHAM8_SDF_07312025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86126_20250731172137_ISIHAM8_SDF_07312025.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86126 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86126 ryan.short@ligo.org Thu, 31 Jul 2025 17:22:19 -0700 H1 SEI H1 CAL - Broadband and Simulines Calibration Sweeps https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86125 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86125</p><p>Since there was a lockloss during the regularly scheduled calibration measurement time this morning, with Jenne&#39;s permission I dropped H1 out of observing and ran them this afternoon after H1 had been locked for 3 hours. Calibration monitor screenshot and report attached.</p> <p><strong>Broadband PCal:</strong> 23:39:04 to 23:44:14 UTC</p> <p><strong>Simulines:</strong> 23:44:56 to 00:08:12 UTC</p> <p>2025-08-01 00:08:11,966 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20250731T234457Z.hdf5<br /> 2025-08-01 00:08:11,973 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20250731T234457Z.hdf5<br /> 2025-08-01 00:08:11,978 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20250731T234457Z.hdf5<br /> 2025-08-01 00:08:11,983 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20250731T234457Z.hdf5<br /> 2025-08-01 00:08:11,987 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20250731T234457Z.hdf5</p> <!--- Output file_1_86125 div --> <div id="file_1_86125" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86125 div --> </div> <!--- Output files_1_86125 div --> <div id="files_1_86125" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86125_20250731171418_CalibMon_07312025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86125_20250731171418_CalibMon_07312025.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86125 div --> </div> <!-- Output break div. --> <div class="break"></div> <!--- Output file_0_86125 div --> <div id="file_0_86125" class="commentHdr"> Non-image files attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_0_86125 div --> </div> <!--- Output files_0_86125 div --> <div id="files_0_86125" class="reportDetails"> <div class="uploadedImg"> <div class="uploadedFileType"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/images/pdf.gif" class="" /></div> <div class="uploadedFileName"><a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86125_20250731171823_H1_calibration_report_20250731T234457Z.pdf" target="blank">H1_calibration_report_20250731T234457Z.pdf</a></div> </div> <!-- Output break div. --> <div class="break"></div> <!--- Close files_0_86125 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86125 ryan.short@ligo.org Thu, 31 Jul 2025 17:18:40 -0700 H1 CAL H1 SEI - Comment to HAM8 H1 gs13 causing .4-ish hz peak again, digital gain got reverted during vent https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86123 <p>Author: camilla.compton@ligo.org</p><p>Report ID: 86123</p><p>The filter cavity has been having locking issues, the operators were tieing sometimes&nbsp;to&nbsp;high wind <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85169">85169</a>&nbsp;or low green power <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85395">85395</a>:</p> <ul> <li>31st July&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86113">86113</a></li> <li>18th July&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85858">85858</a></li> <li>9th July&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85664">85664</a>,&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85660">85660</a></li> <li>4th July&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85550">85550</a></li> <li>More in June and&nbsp;July that I won&#39;t list....</li> </ul> <div>It would be&nbsp;great if we can&nbsp;fix this on Tuesday.</div> <div><em><strong>T</strong></em><em><strong>agging Opsinfo</strong></em> for Jim&#39;s suggested change if the FC has issues before then.&nbsp;</div> OpsInfo, SQZ https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86123 camilla.compton@ligo.org Thu, 31 Jul 2025 16:37:43 -0700 H1 SEI H1 SQZ - squeezing at arm higher order modes https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86107 <p>Author: sheila.dwyer@ligo.org</p><p>Report ID: 86107</p><p>This is a look at the data that Camilla and TJ took in <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85957">85957,</a> motivated by some modeling work that Kevin and Dan have been doing.&nbsp; We took data to look at the squeezing rotation around the arm higher order modes, to compare to measurements that Kevin took using the ADF.&nbsp; We borrowed Jeff&#39;s DCPD test matrix to create a DCPD sum channel at 524kHz, and used a modified version of Elenna&#39;s script to save 5 minutes of no squeezing data from the individual DCPDs.&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85937">85937</a></p> <p><strong>Process details:</strong></p> <p>The <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730144729_HOM_data_ADC_counts.png">first plot</a> here shows the spectra and cross correlation, subtraction and rebinning that I did.&nbsp; We took 5 minutes of data for each of these traces, and 1 second FFTs, so we have 300 averages and the cross correlation asd should be a factor of 300^1/4 = 4 below the no squeezing asd.&nbsp; (Thanks to Elenna for pointing out that I was doing this ratio for the PSD).&nbsp; This is not far below the squeezing level, so when we do the subtraction of the cross correlation the squeezing data becomes noisy.&nbsp; We could do this with shorter FFTs to get the cross correlation lower where the noise is uncorrelated between the two DCPDs, but we want to subtract some fairly narrow features from the spectra, so our best option if we are bothered by this noisy subtracted squeezing data would be to take a longer no squeezing time.&nbsp;&nbsp; After doing the subtraction I rebinned the data to 3 Hz bins.<strong>&nbsp;</strong></p> <p><strong>Looking at higher order mode frequencies:</strong></p> <p>The <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730145633_HOM_data_dB.png">next plot</a> shows this data plotted in dB of squeezing, you can identify the higher order modes most clearly from looking at the mid squeezing data where the higher order modes cause a rotation of the squeezing angle. Zooming in on <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730154946_HOM_data_ADC_counts_dB_10kHz.png">10 kHz</a> you can identify the higher order mode frequencies as roughly 10615+/5 Hz and 10565+/- 10Hz from the X arm modes (see <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=84172">84172</a> for ID with X arm), with the uncertainty based on what I can place as limits by eye, which is worse for the lower mode.&nbsp; The separation of these into different peaks means that there is some astigmatism in the X arm.&nbsp; The y arm mode has much more correlated noise to subtract, and is sitting right under the forest of accoustic modes, but you can still see evidence of a rotation starting around 10.25kHz.&nbsp; This data isn&#39;t clear enough to estimate if there is similar evidence of astigmatism in the y arm. &nbsp;</p> <p>Zooming in around<a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730160628_HOM_data_ADC_counts_dB_5kHz.png"> 5kHz,</a> we can see that there do seem to be two modes with rotations, one of them is sitting on top of a set of lines, but seems to be narrower than the other.&nbsp; The broad mode is at&nbsp; 5345+/- 15 Hz Hz and the narrower one is at 5184+/- 4Hz .&nbsp; Assuming that the second one is from the X arm based on the identification of the 2nd order modes, the second order mode frequency is 98.8+/- 0.3% of twice the first order mode frequency for the lower mode, and 99.3% +/-0.3% for the upper mode. This ratio is not 1 because the beam size of the 2nd order modes is slightly bigger than for the 1st order mode, since the mirror is non spherical its curvature is sightly different for the larger sized beam, so these ratios contain some information about how non spherical the mirrors are.</p> <p><strong>Squeezing loss and rotation estimates:</strong></p> <p>We can use this data to estimate a loss an rotation expirienced by the squeezing at these higher order modes.&nbsp; Using the mean squeezing data, where the squeezing angle is completely uncontrolled, and Camilla&#39;s measurement of the nonlinear gain of 13.8 we can estimtae the total squeezing efficiency (using the notation from <a href="https://doi.org/10.1364/OE.14.006930">Aoki</a>):&nbsp;</p> <div> <ul> <li>eta = (R_mean-1)/[2*x*(1/(1-x)**2-1/(1+x)**2)]</li> <li>x = 1 - 1/np.sqrt(NLG)</li> <li>R_mean = ratio of PSD with mean sqz over no sqz (varience)</li> </ul> <p>Using this estimate we can predict the anti-squeezing level, which is mostly insensitive to squeezing angle, this prediction is plotted in the dark blue on the <a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730145633_HOM_data_dB.png">dB plot</a>, where it agrees nicely with the measured anti-squeezing.</p> <p>We can also make an estimate of the rotation using the mid squeezing data where we have about 5dB of anti-squeezing. To do this, I first fit the average squeezing angle for these measurements using data from 6.3kHz to 7.8kHz, using the Aoki equation:</p> <ul> <li>R = R_p sin^2(theta) + R_m cos^2 theta</li> <li>Rp = 1+4*x*eta/(1-x)**2 ;</li> <li>Rm = 1-4*x*eta/(1+x)**2</li> </ul> <div> <div>The squeezing angle for the negative side is -18 degrees, the positive side is 16 degrees.&nbsp; Taylor expanding the varience around this squeezing angle gives:&nbsp;</div> <div>R = R(average angle) + 2*np.sin(theta)*np.cos(theta)*(Rp-Rm) * delta theta</div> <div>&nbsp;</div> <div>The 5th<a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730165503_10kHz_estimate_loss_rotation.png"> plot here</a> shows the loss and rotation inferred in this way for both 5kHz and 10kHz modes.&nbsp; The estimate of the rotation is slightly impacted by the frequency dependent loss, the rotation angle estimated using the frequency dependent efficiency is a little bit larger than if we use the average efficiency.&nbsp;</div> <div>&nbsp;</div> <div>The last two plots show the loss and rotation zoomed in around the 2nd order mode. The final plot is the same as the second to last, but in this case I&#39;ve flipped what I&#39;ve used for a starting gues in the squeezing angle, so that the trace we&#39;ve been calling positive mid squeezing has a negative squeezing angle and the one called negative has a postive angle, in this case the rotation estimate goes in the opposite direction.&nbsp; If we were to look at the data at frequencies where the radiation pressure starts to matter, we could distinguish which of these is the correct model.</div> <div>&nbsp;</div> <div>&nbsp;</div> </div> </div> <!--- Output file_1_86107 div --> <div id="file_1_86107" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86107 div --> </div> <!--- Output files_1_86107 div --> <div id="files_1_86107" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730144729_HOM_data_ADC_counts.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250730144729_HOM_data_ADC_counts.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730145633_HOM_data_dB.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250730145633_HOM_data_dB.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730154946_HOM_data_ADC_counts_dB_10kHz.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250730154946_HOM_data_ADC_counts_dB_10kHz.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730160628_HOM_data_ADC_counts_dB_5kHz.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250730160628_HOM_data_ADC_counts_dB_5kHz.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250730165503_10kHz_estimate_loss_rotation.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250730165503_10kHz_estimate_loss_rotation.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250731155913_10kHz_estimate_loss_rotation.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250731155913_10kHz_estimate_loss_rotation.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86107_20250731155931_10kHz_estimate_loss_rotation_flip_plus_minus.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86107_20250731155931_10kHz_estimate_loss_rotation_flip_plus_minus.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86107 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86107 sheila.dwyer@ligo.org Thu, 31 Jul 2025 16:37:34 -0700 H1 SQZ H1 General - OPS Thursday day shift summary https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86116 <p>Author: ryan.crouch@ligo.org</p><p>Report ID: 86116</p><p><strong>TITLE:</strong> 07/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 151Mpc<br /> <strong>INCOMING OPERATOR:</strong> Ryan S<br /> <strong>SHIFT SUMMARY:</strong> Two locklosses, Ryan will try to get the calibration measurement later this evening. We&#39;ve been locked for just under 3 hours.<br /> <strong>LOG:</strong></p> <table> <tbody> <tr> <th>Start Time</th> <th>System</th> <th>Name</th> <th>Location</th> <th>Lazer_Haz</th> <th>Task</th> <th>Time End</th> </tr> <tr> <td>15:46</td> <td>SPI</td> <td>Jeff</td> <td>Optics lab</td> <td>N</td> <td>SPI inventory</td> <td>17:24</td> </tr> <tr> <td>16:25</td> <td>EE</td> <td>Richard, Fil</td> <td>LVEA</td> <td>N</td> <td>Checks by HAM1</td> <td>16:34</td> </tr> <tr> <td>17:17</td> <td>SQZ</td> <td>Camilla</td> <td>CR</td> <td>N</td> <td>SQZ HOM measurement</td> <td>18:02</td> </tr> <tr> <td>17:31</td> <td>FAC</td> <td>Nellie</td> <td>Optics lab</td> <td>N</td> <td>Tech clean</td> <td>17:59</td> </tr> <tr> <td>18:27</td> <td>SPI</td> <td>Jeff</td> <td>Optics lab</td> <td>N</td> <td>Quick checks</td> <td>18:31</td> </tr> <tr> <td>20:22</td> <td>VAC</td> <td>Gerardo</td> <td>FCES</td> <td>N</td> <td>VAC checks</td> <td>21:24</td> </tr> <tr> <td>21:20</td> <td>ISC</td> <td>Rahul, Jennie</td> <td>Optics lab</td> <td>LOCAL</td> <td>ISS array</td> <td>21:41</td> </tr> </tbody> </table> <ul> <li>15:13 UTC <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/?event=1438010049">lockloss</a> during Simulines <ul> <li>16:12 UTC Initial Alignment</li> <li>DRMI took over 20 minutes and a round of PRMI to lock</li> </ul> </li> <li>19:31 UTC lockloss <ul> <li>20:42 UTC Observing</li> <li>Erik restarted the TP_MON IOC after I noticed it had been frozen since Jun 16th</li> </ul> </li> </ul> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86116 ryan.crouch@ligo.org Thu, 31 Jul 2025 16:31:50 -0700 H1 General LHO General - Ops Eve Shift Start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86122 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86122</p><p><strong>TITLE:</strong> 07/31 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 150Mpc<br /> <strong>OUTGOING OPERATOR:</strong> Ryan C<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 13mph Gusts, 8mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.04 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.04 &mu;m/s<br /> <strong>QUICK SUMMARY: </strong>H1 has been locked and observing for 2.5 hours. If there&#39;s an opportunity, I&#39;ll run the calibration sweeps that weren&#39;t fully completed this morning.</p> <ul> <li>Earthquakes have been rolling through all day, but the ground is mostly calm at the moment</li> <li>Wind speeds low</li> <li>All other systems nominal</li> </ul> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86122 ryan.short@ligo.org Thu, 31 Jul 2025 16:01:11 -0700 LHO General H1 SUS - In-Lock SUS Charge Measurement - Weekly https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86121 <p>Author: ryan.short@ligo.org</p><p>Report ID: 86121</p><p>FAMIS <a href="https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?InstallID=2&amp;RequestID=28416">28416</a>, last checked in <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85920">alog85920</a></p> <p>Too low of coherence for ITMX this week, so no new data point in that plot.</p> <!--- Output file_1_86121 div --> <div id="file_1_86121" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86121 div --> </div> <!--- Output files_1_86121 div --> <div id="files_1_86121" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86121_20250731155635_ETMX_07292025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86121_20250731155635_ETMX_07292025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86121_20250731155637_ETMY_07292025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86121_20250731155637_ETMY_07292025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86121_20250731155639_ITMX_07292025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86121_20250731155639_ITMX_07292025.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86121_20250731155642_ITMY_07292025.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86121_20250731155642_ITMY_07292025.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86121 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86121 ryan.short@ligo.org Thu, 31 Jul 2025 15:56:50 -0700 H1 SUS H1 SEI - HAM8 H1 gs13 causing .4-ish hz peak again, digital gain got reverted during vent https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86120 <p>Author: jim.warner@ligo.org</p><p>Report ID: 86120</p><p>Last year we found that a problem with the H1 GS13 was causing a .<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=77218">375hz feature</a> in the motion of the table which showed up in the filter cavity. The root issue was a GS13 having a low gain compared to the other sensors. I was able to compensate by&nbsp; adding a digital gain of 2. During the vent, this gain got reverted at some point and the sdf accepted. I didn&#39;t fix this when I found it because it didn&#39;t seem to be causing the same issue, but it seems the feature has now returned.&nbsp; Doesn&#39;t seem to be causing problems for the filter cavity that I&#39;ve heard of, but the ISI and SUS definitely see this feature.&nbsp;</p> <p>First image are the side osems for FC2 while the IFO was locked, the crosshair is at .375hz, similar to what we saw in the past.&nbsp;</p> <p>Second image is the HAM8 summary page for today, the .375hz feature is clearly visible while the ISI is isolated.</p> <p>Third image are l2l tfs for each co-located gs13/cps pair, the red trace shows the magnitude of this tf is almost exactly half the other 2 gs13/cps pairs, above 1 hz.&nbsp;</p> <p>I will try to fix this next Tuesday, but if the filter cavity is having problems,&nbsp; caput H1:ISI-HAM8_GS13INF_H1_GAIN 2 in a terminal and then accepting the sdf diff should fix the issue.</p> ISC <!--- Output file_1_86120 div --> <div id="file_1_86120" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86120 div --> </div> <!--- Output files_1_86120 div --> <div id="files_1_86120" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86120_20250731150952_Screenshotfrom2025-07-3115-09-35.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86120_20250731150952_Screenshotfrom2025-07-3115-09-35.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86120_20250731151031_Screenshotfrom2025-07-3115-10-20.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86120_20250731151031_Screenshotfrom2025-07-3115-10-20.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86120_20250731151116_Screenshotfrom2025-07-3115-11-09.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86120_20250731151116_Screenshotfrom2025-07-3115-11-09.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86120 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86120 jim.warner@ligo.org Thu, 31 Jul 2025 15:20:27 -0700 H1 SEI LHO FMCS - En X temperature trending https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86119 <p>Author: eric.otterman@ligo.org</p><p>Report ID: 86119</p>The last week has seen the space temperature of the VEA at End X slowly increase during the morning hours. This was found to be associated with the outdoor air temperature reset programming which allowed the supply air temperature to reset upward as the temperature outside cooled off, which was most pronounced in the early morning hours. This rise in supply air temperature prevented the air handler from effectively cooling the space, until the sun came up and warmed the air, which caused a downward reset. This programming has been modified to avoid this problem in the future. https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86119 eric.otterman@ligo.org Thu, 31 Jul 2025 11:47:39 -0700 LHO FMCS H1 SQZ - 2W Mid SQZ Data for 5kHz and 10kHz HOM Spacing https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86117 <p>Author: camilla.compton@ligo.org</p><p>Report ID: 86117</p><div> <div><em>Sheila, Camilla</em></div> </div> <div> <div>Took data mid sqz only data once Ryan had the IFO locked at 2W on DC READOUT, he paused at CHECK_VOILINS_BEFORE_POWERUP. Aim is to see the HOM spacing at 5kHz and 10kHz to compare to the thermalized 60W data took in&nbsp;<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85957">85957</a>. They have definitely shifted: at 2W at 5kHz and 10kHz and at 60W were at around 5.35kHz and 10.5kHz.</div> <div>&nbsp;</div> <div>We saved&nbsp; H1:OMC-DCPD_524K_A2_IN1 data with the PD sum after I changed the matrix as in <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85937">85937</a>. DTTs saved as<em> </em><em><code>/ligo/home/camilla.compton/Documents/sqz/templates/dtt/20250731_SQZdata.xml </code></em><a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86117_20250731110953_2WSQZ.png">screenshot attached</a> and<em>&nbsp;<code>/ligo/home/sheila.dwyer/Noise_Budget_repos/quantumnoisebudgeting/data_files/higher_order_modes_sqzdataset2W.xml</code></em><code> </code><a href="https://alog.ligo-wa.caltech.edu/aLOG/uploads/86117_20250731110956_2WSQZHOM.png">screenshot attached</a>.</div> <div>&nbsp;</div> <div>Starting angle is (-)130, requested SQZ_MANGER to FREQ_DEP_SQZ and once we got there, took SQZ_ANG SERVO to DOWN.</div> <div>&nbsp;</div> <div> <div> <table border="1" cellpadding="1" cellspacing="1" style="width:750px"> <tbody> <tr> <td><strong>Type</strong></td> <td><strong>Time (UTC)</strong></td> <td><strong>Angle</strong></td> <td><strong>DTT Ref in SQZ</strong></td> <td><strong>DTT ref in HOM</strong></td> <td><strong>Notes</strong></td> </tr> <tr> <td>No SQZ</td> <td>15:20:00 -15:25:00</td> <td>N/A</td> <td>ref 0</td> <td>ref 0,1</td> <td>&nbsp;</td> </tr> <tr> <td>FDS Mid - SQZ</td> <td>15:31:00 - 15:34:00</td> <td>(-)120</td> <td>ref 1</td> <td>ref 2,3</td> <td>Was close to ASQZ so retook below</td> </tr> <tr> <td>FDS Mid + SQZ</td> <td>15:36:00 - 15:39:00</td> <td>(-) 30</td> <td>ref 2</td> <td>ref 4,5</td> <td>&nbsp;</td> </tr> <tr> <td>FDS Mid - SQZ</td> <td>15:40:00 - 15:43:00</td> <td>(-)150</td> <td>ref 3</td> <td>ref 6,7</td> <td>&nbsp;</td> </tr> </tbody> </table> </div> </div> <div>&nbsp;</div> <div>Checked the NLG the normal way, checked OPO crystal temp but it was already optimized, unsure why is is so low already, we left it at 15.8 on Tuesday <a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=86067">86067</a>.</div> <table border="1" cellpadding="1" cellspacing="1" style="width:700px"> <tbody> <tr> <td><strong>OPO Setpoint</strong></td> <td><strong>Amplified Max</strong></td> <td><strong>Amplified Min</strong></td> <td><strong>UnAmp</strong></td> <td><strong>Dark</strong></td> <td><strong>NLG </strong></td> <td><strong>Note</strong></td> </tr> <tr> <td>80</td> <td>0.0533596</td> <td>0.00250</td> <td>0.007039</td> <td>-1.93e-5</td> <td><strong>7.6</strong></td> <td>Temp already optimized</td> </tr> </tbody> </table> </div> <!--- Output file_1_86117 div --> <div id="file_1_86117" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86117 div --> </div> <!--- Output files_1_86117 div --> <div id="files_1_86117" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86117_20250731110953_2WSQZ.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86117_20250731110953_2WSQZ.png" class="outputImg" /></a> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86117_20250731110956_2WSQZHOM.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86117_20250731110956_2WSQZHOM.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86117 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86117 camilla.compton@ligo.org Thu, 31 Jul 2025 11:18:11 -0700 H1 SQZ LHO VE - Thu CP1 Fill https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86118 <p>Author: david.barker@ligo.org</p><p>Report ID: 86118</p><p><strong>Thu Jul 31 10:14:22 2025 INFO: Fill completed in 14min 18secs</strong></p> <p>Gerardo confirmed a good fill curbside.</p> <!--- Output file_1_86118 div --> <div id="file_1_86118" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86118 div --> </div> <!--- Output files_1_86118 div --> <div id="files_1_86118" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86118_20250731104934_CP1-1208.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86118_20250731104934_CP1-1208.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86118 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86118 david.barker@ligo.org Thu, 31 Jul 2025 10:49:36 -0700 LHO VE H1 CAL - Thursday calibration measurement, lockloss https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86115 <p>Author: ryan.crouch@ligo.org</p><p>Report ID: 86115</p><p>We lost lock during the simulines.</p> <p><strong>Broadband</strong>:</p> <p>Start: 2025-07-31 08:01:17</p> <p>Stop: 2025-07-31 08:06:27<br /> File: 2025-07-31 08:06:27,403 bb output: /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250731T150117Z.xml</p> <p>&nbsp;</p> <p><strong>Simulines</strong>:</p> <p>Start: 2025-07-31 15:07:27.930077 UTC // GPS: 1438009665.930077</p> <p>Stop:</p> <p>PDT: 2025-07-31 08:13:55.521211 PDT<br /> UTC: 2025-07-31 15:13:55.521211 UTC<br /> GPS: 1438010053.521211</p> <p>2025-07-31 15:13:36,414 | INFO | Scanning frequency 8.99 in Scan : DARM_OLGTF on PID: 915550<br /> 2025-07-31 15:13:36,414 | INFO | Drive, on DARM_OLGTF, at frequency: 8.99, is now running for 31 seconds.<br /> 2025-07-31 15:13:51,097 | ERROR | IFO not in Low Noise state, Sending Interrupts to excitations and main thread.<br /> 2025-07-31 15:13:51,098 | ERROR | Ramping Down Excitation on channel H1:SUS-ETMX_L2_CAL_EXC<br /> 2025-07-31 15:13:51,098 | ERROR | Ramping Down Excitation on channel H1:LSC-DARM1_EXC<br /> 2025-07-31 15:13:51,098 | ERROR | Ramping Down Excitation on channel H1:CAL-PCALY_SWEPT_SINE_EXC<br /> 2025-07-31 15:13:51,098 | ERROR | Ramping Down Excitation on channel H1:SUS-ETMX_L1_CAL_EXC<br /> 2025-07-31 15:13:51,098 | ERROR | Ramping Down Excitation on channel H1:SUS-ETMX_L3_CAL_EXC<br /> 2025-07-31 15:13:51,098 | ERROR | Aborting main thread and Data recording, if any. Cleaning up temporary file structure.</p> <p>15:13 UTC <a href="https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/?event=1438010049">lockloss</a>, there was a 5.0 from between Greenland and northern Canada hitting us at the time.</p> <p>&nbsp;</p> Lockloss <!--- Output file_1_86115 div --> <div id="file_1_86115" class="commentHdr"> Images attached to this report <!-- Output break div. --> <div class="break"></div> <!--- Close file_1_86115 div --> </div> <!--- Output files_1_86115 div --> <div id="files_1_86115" class="reportDetails"> <a href="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/86115_20250731080238_cal_monitor_2025-07-31_08-00-14.png" target="blank"><img src="https://www-alog1.ligo-wa.caltech.edu/aLOG/uploads/tn/tn_86115_20250731080238_cal_monitor_2025-07-31_08-00-14.png" class="outputImg" /></a> <!-- Output break div. --> <div class="break"></div> <!--- Close files_1_86115 div --> </div> <!-- Output break div. --> <div class="break"></div> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86115 ryan.crouch@ligo.org Thu, 31 Jul 2025 08:15:47 -0700 H1 CAL H1 General - OPS Thursday day shift start https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86114 <p>Author: ryan.crouch@ligo.org</p><p>Report ID: 86114</p><p><strong>TITLE:</strong> 07/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC<br /> <strong>STATE of H1:</strong> Observing at 149Mpc<br /> <strong>OUTGOING OPERATOR:</strong> TJ<br /> <strong>CURRENT ENVIRONMENT:</strong><br /> &nbsp;&nbsp;&nbsp; SEI_ENV state: CALM<br /> &nbsp;&nbsp;&nbsp; Wind: 16mph Gusts, 8mph 3min avg<br /> &nbsp;&nbsp;&nbsp; Primary useism: 0.10 &mu;m/s<br /> &nbsp;&nbsp;&nbsp; Secondary useism: 0.05 &mu;m/s<br /> <strong>QUICK SUMMARY:</strong></p> <ul> <li>We&#39;ve been locked for 4.5 hours</li> <li>Earthquakes continued overnight</li> <li>Wind is low</li> <li>Commissioning today from 15:00 - 19:00 UTC <ul> <li>I will start with a calibration measurement</li> </ul> </li> </ul> https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86114 ryan.crouch@ligo.org Thu, 31 Jul 2025 07:29:11 -0700 H1 General H1 General - Ops Owl Update https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86113 <p>Author: thomas.shaffer@ligo.org</p><p>Report ID: 86113</p><p>Was notified just after we got to low noise, the SQZ FC couldn&#39;t lock. Following the wiki help intructions, flashes on&nbsp;<tt>H1:SQZ-FC_TRANS_C_LF_OUTPUT&nbsp;</tt>were low so I tried moving FC2 to get them higher. Looking at the camera wasn&#39;t really helpful. I was only able to get it to lock with values around 30, and no matter how much I moved FC2 I couldn&#39;t get this to increase. When the SQZ_FC node tries locking it would get values there around 80, not sure whats different.&nbsp;</p> <p>I tried trending FC2 and 1 to see if they moved in the earthquake but they were right where they were last lock. I took a break from scouring the alog and tried to manually move FC2 around again, and while I was waiting between moves, the trans output jumped to 55. I then moved FC2 some more it maxed it out at 94. When I tried to have it lock again though, it still couldin&#39;t hold lock.</p> <p>I tried adjusting the OPO temp, via the SQZ_OPO_LR guardian, since that worked for Oli on July 9 (<a href="https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=85660">alog85660</a>). This also didn&#39;t seem to help things out.</p> <p>I let the SQZ guardian keep trying while I read some more alogs for clues and then it eventually just stayed locked and we went into observing. The FC trans output was still around 80 though, so I&#39;m not sure this will hold, but I&#39;m hoping!</p> SQZ https://www-alog1.ligo-wa.caltech.edu/aLOG/index.php?callRep=86113 thomas.shaffer@ligo.org Thu, 31 Jul 2025 04:29:44 -0700 H1 General