TITLE: 07/06 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 142Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Two locklosses this evening with lengthy relocks, but things generally have been straightforward. H1 has now been locked and observing for an hour.
Lockloss @ 02:12 UTC after 27 minutes locked - link to lockloss tool
No obvious cause.
TITLE: 07/05 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
Lockloss first thing in the morning.
Got relocked just in time for SuperEvent S250705cb candidate!
Had another Lockloss that pushed the Calibration sweep off until later in the day due to thermalization.
Dropped from Observing for SQZ "Beam diverter is open but no 3MHz on OMC, could be an alignment problem" Issue @ 20:31 UTC.
When I cleared the History on H1:SUS-ZM6_M1_LOCK_ filters and allowed the SQZ_MAN to do lock everything it seemed to work.
Note: Did not have to move ZM4 or ZM6 sliders to get SQZ_LO_LR back to LOCKED_OMC[20].
Thermalized Calibration measurement @ 21:39 UTC.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 18:17 | PEM | Robert | LVEA | N | PEM current clamp to mon grounding | 18:33 |
| 19:02 | PEM | Robert | Mech room & Office. | no | setting up PEM mon sensors. | 22:22 |
Lockloss @ 23:26 UTC after almost 5 hours locked - link to lockloss tool
Looks to be some motion on ETM L3 shortly before the lockloss, but hard to say where this came from.
Back to observing at 01:47 UTC.
FAMIS 26401, last checked in alog85398
All fans largely the same as last check and within noise thresholds, aside from a very small increase in noise for MR fan 1.
TITLE: 07/05 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 149Mpc
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 17mph Gusts, 9mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.07 μm/s
QUICK SUMMARY: H1 has been locked for 4.5 hours.
CAL Broadband:
pydarm measure --run-headless bb ran at 21:39 UTC
diag> save /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250705T213846Z.xml
/ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250705T213846Z.xml saved
diag> quit
EXIT KERNEL
2025-07-05 14:43:57,424 bb measurement complete.
2025-07-05 14:43:57,424 bb output: /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250705T213846Z.xml
2025-07-05 14:43:57,425 all measurements complete.
anthony.sanchez@cdsws29: gpstime;python /ligo/groups/cal/src/simulines/simulines/simuLines.py -i /ligo/groups/cal/H1/simulines_settings/newDARM_20231221/settings_h1_20250212.ini;gpstime
PDT: 2025-07-05 14:48:44.048708 PDT
UTC: 2025-07-05 21:48:44.048708 UTC
GPS: 1435787342.048708
....computer noises....
2025-07-05 22:11:19,494 | INFO | Commencing data processing.
2025-07-05 22:11:55,344 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20250705T214844Z.hdf5
2025-07-05 22:11:55,352 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20250705T214844Z.hdf5
2025-07-05 22:11:55,357 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20250705T214844Z.hdf5
2025-07-05 22:11:55,362 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20250705T214844Z.hdf5
2025-07-05 22:11:55,367 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20250705T214844Z.hdf5
PDT: 2025-07-05 15:11:55.502174 PDT
UTC: 2025-07-05 22:11:55.502174 UTC
GPS: 1435788733.502174
Relocked from the Prior lockloss this morning.
H1 Made it to NLN and Observing by 16:25 UTC
Superevent S250705cb candidate !
Relocking Notes:
H1 Relocked it self reaching NLN at 18:34 UTC after bouncing between Locking ALS and Down a few times.
The Plan:
Since H1 barely got back to Observing at 1830 UTC and wont be Thermalized until 21:30 UTC. I plan to drop out of observing at 21:30 to get a Calibration done here at LHO.
Sat Jul 05 10:06:44 2025 INFO: Fill completed in 6min 40secs
TITLE: 07/05 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 149Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 9mph Gusts, 5mph 3min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.08 μm/s
QUICK SUMMARY:
H1 has been Locked and Observing for 2 Hours & 51 min.
All systems are running smoothly.
Expected:
1830 UTC -1900 UTC Calibration
Update:
14:40 UTC Lockloss right after I got here.
TITLE: 07/05 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Started the shift by troubleshooting a SQZ issue that once resolved made for a straightforward evening. Two locklosses tonight, but relocking each time went automatically. H1 has now been locked and observing for almost 2 hours.
Lockloss @ 00:45 UTC after almost 12 hrs lock - link to lockloss tool
No obvious cause.
Back to observing at 02:09 UTC, then another lockloss with no obvious cause at 02:10 UTC.
Back to observing at 03:17 UTC, fully automatic relock.
TITLE: 07/04 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Commissioning
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 25mph Gusts, 20mph 3min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.07 μm/s
QUICK SUMMARY: H1 has been locked for almost 11 hours, but currently not observing as I'm troubleshooting an issue with the SQZ filter cavity. I'm able to consistently bring everything with the squeezer up to before the FC is needed, and lock the FC up to the SQZ_FC Guardian's 'IR_FOUND' state, but every time I try moving on, the FC drops out. Investigation still ongoing.
H1 back to observing at 00:18 UTC.
Ultimately, after trying several things that didn't completely fix the issue like trending FC1/2 OSEMs, adjusting FC1/2 to maximize FC green transmission, and doing a "graceful clear history" on the filter cavity ASC, I enlisted Sheila for guidance. I ran her new 'SCAN_OPOTEMP' Guardian state to optimize the OPO temperature (then gave it a couple more steps to maximize CLF_REFL_RF6), then requested SQZ_MANAGER all the way up to 'FREQ_DEP_SQZ', which worked perfectly this time. The improvement of CLF_REFL_RF6 from 0.35 to 0.39 must have been just enough to make the filter cavity happy.
There were outstanding SDF diffs on h1ascsqzfc, possibly from my history clearing, which Sheila said were okay to just revert (screenshot attached). When I did this, I saw the green FC spot wobble, but not unlock. I then returned H1 to observing.
TITLE: 07/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
H1 has been locked all day and is still locked at NLN.... But...
Dropped out of Observing at 22:54:25 UTC due to the SQZ_FC Dropping to Down.
A few trys later it locked and H1 returned to Observing for just a second, only for the SQZ_FC to unlock again. @ 22:58:55 UTC.
Several trys after that and the FC cannot seem to lock it's self reliably.
We have tried following the directions found in the SQZ_FC section of this SQZr Troubleshooting document.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 22:37 | FAC | Tyler | Machine Shop | N | Checking in on machine shop status | 23:06 |
PSL Status Report - Weekly FAMIS 26429
Laser Status:
NPRO output power is 1.856W
AMP1 output power is 69.91W
AMP2 output power is 140.0W
NPRO watchdog is GREEN
AMP1 watchdog is GREEN
AMP2 watchdog is GREEN
PDWD watchdog is GREEN
PMC:
It has been locked 17 days, 1 hr 18 minutes
Reflected power = 23.39W
Transmitted power = 105.6W
PowerSum = 129.0W
FSS:
It has been locked for 0 days 6 hr and 52 min
TPD[V] = 0.8037V
ISS:
The diffracted power is around 3.6%
Last saturation event was 0 days 6 hours and 52 minutes ago
Possible Issues:
PMC reflected power is high
Back to observing at 04:13 UTC. A lockloss during MAX_POWER caused violin modes to ring up, so on the next attempt H1 spent about 20 minutes damping in OMC_WHITENING. Fully automatic relock.