Reports until 17:07, Monday 16 March 2026
H1 General
anthony.sanchez@LIGO.ORG - posted 17:07, Monday 16 March 2026 - last comment - 17:19, Monday 16 March 2026(89526)
Monday OPS Day Shift Report.

TITLE: 03/17 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:

17:13 UTC GRB -Short E630194 H1 was in Idle.  
ITMX was moved to get better X arm light earlier today. Since then we have been able to Lock PRMI.
Sheila and Gabriele went and took some pictures of inside the HAM1 chamber, so keep an eye out for cool HAM1 pic filled alog.   
We can consistantly get PRMI to lock. The Ryans are currently working on getting mich ACS to work.


LOG:                                                                                                                                                                                                                                                                                        

Start Time System Name Location Lazer_Haz Task Time End
15:06 FAC Randy LVEA N Craning pedistols 15:44
15:17 FAC Nellie & Kim LVEA N Technical Cleaning 16:20
16:08 EE Fil LVEA yes Turning on Illuminator in HAM 1 16:23
16:21 FAC Randy LVEA west bey N Craning some more. 18:13
16:35 FAC Kim & Nellie LVEA N Technical Cleaning 17:04
16:36 OPS LVEA IS Birfurcated HAZARD HAM1 LOCAL LVEA Bifurcated LASER HAZARD @ HAM1 18:17
16:40 SPI Jeff & Jim Optics Lab Yes Building SPI 23:04
16:47 ISC Betsy & Sheila & Jennie W HAM1 Yes looking into HAM1 to find pointing issues. 18:47
17:04 FAC Kim Mid X N Technical Cleaning. 18:09
17:06 EE Fil LVEA Ham4 N Pulling Cables. 18:36
17:10 TCS Sophie Cheta Lab Yes Cheta-ing 21:26
21:10 ISC Sheila & Gabrielle LVEA HAM1 yes Photoshoot 22:10
21:21 SUS Ibriham & Oli LVEA N testing sus parts 21:44
22:30 VAC Gerardo, Jordon LVEA N getting a Vacuum cart 22:52
23:40 TCS Sophie Cheta yes Cheta work 00:10
Comments related to this report
ryan.short@LIGO.ORG - 17:19, Monday 16 March 2026 (89528)

Ryan(s)

We added at +90 degree phase shift to the AS_B RF45 WFS to make the MICH loop work during PRMI ASC; screenshot attached of new values accepted in SDF. However, in testing this, the PRMI buildups didn't really improve, so it's possible more adjustments are needed here, which Ryan will check this evening.

Images attached to this comment