J. Kissel, J. Wright, J. Freed

Now that we've got the SPI in chamber and moving things along with beams (LHO:90621), it was time to make another run through the MEDM screens and infrastructure (last touched during the initial release of the screens LHO:90006) to make sure the signals flow as intented and the UIUX has everything it needs.

This morning we:
    - Added linked to the picomotor control to the overview
    - turned on inputs, outputs, and set gains to 1.0 to make sure IFO PDs were demodulated and producing a legit live contrast estimate with the amplitude and mean of the PD signals
    - turned on inputs, outputs, and set gains to 1.0 in any bank necessary to make sure optical lever QPDs SUM, PIT, YAW signals made it to the {PIT,YAW}_OUT_DQ channels 
    - added a first-guess low pass -- 4th order butterworth filter with 10 Hz corner frequency -- to the MEAN banks that filter the raw IFO PD signals (with the 4096 Hz beat note on it) to get the mean of the signal.

This needed several mods to MEDM screens that had some missing filter banks:
    in /opt/rtcds/userapps/release/spi/common/medm/
    - Addition of links to picomotor control screens 
         SPI_CUST_OVERVIEW.adl            committed to   rev 35342
    - Added missing HETPHA and HETAMP filter banks at the output of I/Q to AMP/PHASE conversion
         SPI_CUST_IFO_DEMOD.adl           committed to   rev 35337
    - Added missing CONTRAST Filter Banks, and changed the precision of the OUT16 displayed on the screen from truncated (for signals above 1) to decimal.
         SPI_CUST_IFO_MON.adl             committed to   rev 35338.
    - Quick resolution of long-standing bug with labels of banks in 
         SPI_CUST_OL_ISIOUTF.adl          committed to   rev 35336

All of the above settings have been committed to the h1spih23's safe.snap
    /opt/rtcds/userapps/release/spi/h1/burtfiles
         h1spih23_safe.snap               committed to   rev 35340

The EDC was running with 59 disconnected channels from 3 IOCs:

PWRCS: old IOC has been retired, new IOC will roll out next week with new channel names, EDC will be restarted then.

DUST-LAB2: this monitor has been removed from the IOC, will remove from EDC at next restart.

HEPI-PUMP-CS: 3 channels were recently removed.

To remove these disconnects I am running a temporary containerized IOC on the service-host cluster called edc_green_ioc for the long weekend coming up. We should be able to retire or reduce this next week when we restart the DAQ and the production IOCs.

Ryan S, Madi, Camilla, TJ consult. 

Before unlcokign the OPO SUS, we checked the beam was centered on HAM7 iris and SQZT7 IR PD irises, the SK beam and the FC REFL beams were missing the LPM, photo of SK. 

After the new lens holder for the B:L2 aperture was added, today we unlocked the OPO SUS. It was hanging freely but the +X side looked very low so we spent some time rebalancing it. Attached photos are of current +X, +Y and -Y clearances. We moved one weight from near H:BS1 towards SFI2 see photo and moved the dog clamp being used as a weight but still attached to same hole (photo) and removed two very small weights from near G:L3 (photo) and H:L3 (photo). 

However, after rebalancing the beam is not well aligned, it is the the -X of the ZM3 iris, not retroreflect well in yaw (<1mm off) and also off in yaw at the ZM4 iris. There is beam getting to the SQZT7 PD, but it is clipped on the OPO as the light level is oscillating on the IR PD. 

Plan going forward is to check OPO SUS TFs (Oli did this and they look good 90625) and then decide whether to repeat our alignment again. Alternative might be to rebalance again in a way that gives us a closer alignment. 

J. Freed, J. Kissel, J, Wright, 

To take power measuments we used 2 different power meters a thorlabs Silicon S121C and Thermal S405C.

We are comparing these values to our optical power budget E2400441 

These values agree with our budget. The input power is greater than we expected. The meas power has less losses than expected. While speciffically the ref path has more losses than expected. But not expected to be a problem. The uncertainty for all values was 1.0 except the values below 10 which were 0.1

We also recorded the values for the monitor channel from SPI prep at the same time. (the 5 values below were recorded at the same time)

M1= 7.62V

M2 = 758mV

M3 = 784mV

Ref (thermal) = 16.05mW

Meas (Silion)  = 64mW

Of course the 2W amp was just turned on so its gain fluctuates a little untill it is thermalized so we recoded all 5 values again once the 2W amp was thermaized

M1= 7.63V

M2 = 764mV (thermalized)

M3 = 788mV (thermalized)

MEAS (thermal) = 57.6mW

REF (Silion)  = 18.3mW

Transfer functions after the rebalancing of the OPO yesterday look great! There's no touching or new peaks. I compared them to the close out measurements we got back in February (89015) and they match very well.

Settings
- ISI Locked
- DAMP OFF

Data
/ligo/svncommon/SusSVN/sus/trunk/OPOS/H1/OPO/SAGM1/Data/2026-06-16_1500_H1SUSOPO_M1_WhiteNoise_{L,T,V,R,P,Y}_0p02to50Hz.xml
r13037

Results
/ligo/svncommon/SusSVN/sus/trunk/OPOS/H1/OPO/SAGM1/Results/2026-06-16_1500_H1SUSOPO_M1_ALL_TFs.pdf
r13037
/ligo/svncommon/SusSVN/sus/trunk/OPOS/Common/Data/alloposs_2026-06-16_H1SUSOPO_JunevsFeb2026_ALL_TFs.pdf
/ligo/svncommon/SusSVN/sus/trunk/OPOS/Common/Data/alloposs_2026-06-16_H1SUSOPO_JunevsFeb2026_ALL_ZOOMED_TFs.pdf
r13036

TITLE: 06/16 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 14mph Gusts, 9mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.08 μm/s 
QUICK SUMMARY:

Tuesday!!

LVEA IS LASER HAZARD

J. Freed, J. Kissel, TJ. Shaffer, B. Weaver, M, Pirello

Continuing from 90581 (Notes are stored here).Today we completed all of the inside optical fiber install, Got our first light out of SPI, Managed to send it from one ham table and back again.  As well as align the reference interferometer to produce a beat note with decent efficiency (~75%).

We also connected the HAM2 wiring from HAM2 feedthrough to TIA to CDS system.

In order we did:

• Meas fibr and Ref fiber are installed including spools.
• connected the HAM2 wiring from HAM2 D4- F10 feedthrough to TIA Chassis to CDS system.
• Got laser light out on ISIK
• Realigned the SPI reference interferometer and got a beat note with an efficiency of ~75%
• Realigned the MEAS beam path and managed to get light on both of SPIs QPDs
• HAM2 was unlocked and light is still on the QPDs

SPI_QPD_HAM2_Unlock.png  Shows a screenshot of ndscope screens of the QPDs. Note the purple areas. The HAM2 unlock did show an effect on ISIK QPD (QPDB) but QPDA was insensitive to the Unlock. 

WP13294 h1susbs running BBSS model, restore h1suslo12

Erik, Oli, EJ, Jonathan, Dave:

h1susbs was returned, via puppet, to h1susb2h34's model list. Oli created a new h1susbs, with the old BSFM model replaced with the BBSS model which had been running on h1suslo12. This was not a straight move, changes were also made including restoring all the IPC channels.

h1suslo12 was returned to LO12 duties, restoring this model to what it was before it became the temporary BBSS model.

Because DAC channels were being swapped between models, and the DAQ needed to send a new model's data block, we decided to fence and reboot h1sush2h34 to make these changes.

Jonathan restarted the DAQ. Both broadcasters needed a BBSS to BS name change.

CDS is once again running with zero IPC errors.

With the work done in HAM2 done and the table rebalanced (alog90577), I unlocked the HAM2 ISI with Betsy's in the D,C,B,A order. The door cover on the -Y side was very tight and we had to loosen and wiggle it a bit to get enough slack for the arm and clip to hold. The +Y side was exactly the opposite and was billowing inches away, so we left the arm off.

Oli took the ISI to Damped and we'll see if that helps out the SPI team.

TITLE: 06/15 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:

LVEA IS LASER HAZARD

HAM2 ISI has been unlocked and it is in DAMPED

LOG:                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Tested the laser power through the fiber chain (90 ft out of vac fiber cable -->feedthrough-->in vac splitter) using a Ophir power meter. The measurements were taken by orienting the fiber to shine into the power meter.

Directly from laser: ~19.8-20mW, at max 21.5mW

After 90ft fiber:  ~17.5-18.2mW, at max 19.56mW

After the feedthrough: ~14.8mW, at max 15.7mW

After Splitter: ~5.6mW or 4.86mW depending on which side of spliter, at max 5.9mW

Note that the measurements taken after the splitter might be a bit low because the angle of the power meter wasn't the best, I'll re-measure it tomorrow. 

I've gotten the fiber mircoscope from Jeff, so I'll check the fiber core of the feedthrough and the splitter and post photos

Tomorrow I'll hook up the splitter to each of the HoQI and see if the fringe visability is the same when in the fiber chain as when getting light directly from the laser. 

Ryan S, Elenna, Camilla. Continued from 90609. 

Checked the SQZT7 iris, beam was nicely centered. Ryan then moved SRM/ZM6 to try to center AS_AIR camera and AS_, this did not work. Left as Friday settings. OMC was saturated, on e we cleared SUS e we cleared SUS histories, we lost light onAS_A and B. Ryan moved OM1 and OM2 back to their Friday locations using the sliders. Then turned on DC centering loops 3 and 4 until centered and then OMC ASC to center beams on al diodes, apart from AS_C. See attached for alignments and sliders. OMC was not saturating. 

For scan that worked well, we set up OMC PDs as Keita suggested (worked only with AW filters off), attached. Gerardo turned the whole corner purger air off. We decreased scan time to 100s. We left the OMC ASC running.  Attached is what the main and mode mismatch peaks looked like. We have <2% mode mismatch. I expect we should be happy with this as in O4 we measured only >2%. We could later repeat with different ZM4/5 PSAMS settings to try to improve.

Saved to /opt/rtcds/userapps/release/sqz/h1/Templates/dtt/OMC_SCANS/June15_PurgeOff_2026_OMC_scan.xml

*calculated with TEM02 / (TEM00 + TEM02) 

h1susbs is now fully running the BBSS and everything that was previously on the h1suslo12 model was moved over. The channels that were previously called SUS-BBSS are now called SUS-BS. Old SUS-BBSS data can still be grabbed by using nds2.

I unpaused the BS guardian and took the suspension to DAMPED. It is damping.

/opt/rtcds/userapps/release/cds/h1/medm/SITEMAP.adl
r35324
- Removed BBSS(temp) and updated link for BS

/opt/rtcds/userapps/release/sus/h1/medm/susbs_overview_macro.txt
r35325
- Copied over susbbss_over_macro.txt and updated optic name and dcuids

/opt/rtcds/userapps/release/sus/common/medm/bbss/SUS_CUST_BBSS_QOSEM_OVERVIEW.adl
/opt/rtcds/userapps/release/sus/common/medm/bbss/SUS_CUST_BBSS_M3_OPLEV.adl
r35327
- Removed temporary 'lo12' filled in optic names and replaced with $(optic)

/opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSLO12.txt
/opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSBS.txt
r35326
- Copied over previous BBSS filter files into H1SUSBS (with name change from BBSS -> BS)
- Committed updated H1SUSLO12 filter file (which has no filters loaded, which is correct)

/opt/rtcds/userapps/release/sus/h1/burtfiles/h1susbs_down.snap
r35329
- Copied opt/rtcds/lho/h1/target/h1suslo12/h1suslo12epics/burt/safe.snap over to /opt/rtcds/userapps/release/sus/h1/burtfiles/h1susbs_down.snap, which due to symlinks gets linked over to opt/rtcds/lho/h1/target/h1susbs/h1susbsepics/burt/safe.snap
- Loaded BS sdf from safe.snap and 'reverted' changes to get the model to put in the correct settings

Test fit the baffles on the CRS in the H2-PSL (photo of one on CRS below). There aren't any type 06 dog clamps (D1100640) which are called for in the assembly (D2600161), so we are using type 05 and type 09 instead. These were also tested to make sure they could be used to attach the CRS to the table. 

The plan for today is to test the fiber chain in the H2-PSL to make sure enough power gets through the HoQIs when in chamber