TITLE: 06/23 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: One lockloss this shift which took a while to come back from, but overall a fairly quiet evening. H1 has been locked for 1.5 hours.

• 00:59 - Lockloss - alog85232
• 03:33 - Low Noise
  • Convincing SQZ to work (see above alog)
• 03:45 - Observing

Lockloss @ 00:59 UTC after almost 23 hours locked - link to lockloss tool

No obvious cause.

TITLE: 06/22 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 15mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.09 μm/s
QUICK SUMMARY: H1 has been locked for 19.5 hours and all's quiet.

• Wind is low, microseism falling
• All other systems nominal

TITLE: 06/22 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

A nice very quiet shift!  H1 has been humming along (currently at 19.5hr lock), and no intervention was needed during the shift.  Breezes have increased slightly through the day.
LOG:  n/a

Sun Jun 22 10:09:56 2025 INFO: Fill completed in 9min 52secs

TITLE: 06/22 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.11 μm/s
QUICK SUMMARY:

H1's been locked for almost 12.5hrs  and it looks like we had a brief outage from Observing due to the SQZ dropping us out just before 1300utc/6amPDT, but SQZ MANAGER and H1 got back to OBSERVING automatically within a 5min (coincidentally, this improved the H1 Range [which had been drifting down below 150Mpc] getting it back to above 150Mpc.

Environmentally, we are doing well; useism had been above the 50th percentile and has been drifting down from this for the last 10hrs.  Winds are low and it is a cloudy and cool morning.

TITLE: 06/22 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 144Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: One lockloss this evening after a very short observing segment followed by an automatic relock; quiet shift otherwise. H1 has been locked and observing for almost 3 hours.

• 23:00 - Running initial alignment
• 23:20 - Starting lock acquisition
• 00:19 - Observing
• 00:23 - Lockloss - alog85225
• 02:10 - Observing

Lockloss @ 00:23 UTC after just 4 minutes of observing - link to lockloss tool

No obvious cause, but maybe a very small ETM glitch? The lockloss tool tags wind, which was getting up to about 30mph at the time.

TITLE: 06/21 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

LOG:

• 1420 ISC LOCK & INIT ALIGN loaded
• 1423-1439 INITIAL ALIGNMENT started for a 2nd time but with reloaded init align
• 1440 LOCKING  (60W at about 1526---paving way for thermalized h1 for calibration at 1830utc)
• 1541 back to OBSERVING
• 1830-1859 Saturday Calibration
• 1917-1919 and 1949-1956:  Out for Sqz Adjustments afterr noticing H1-Live channel was higher than reference (Vicky helped me get through this).
• 2202 Lockloss due to M6.1 EQ @Japan (this was preceded by EQ alarms on Verbal and EQ Mode toggled between states a few times)
• 2300-2321 Initial Alignment 

TITLE: 06/21 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: EARTHQUAKE
    Wind: 18mph Gusts, 7mph 3min avg
    Primary useism: 0.18 μm/s
    Secondary useism: 0.17 μm/s
QUICK SUMMARY: H1 is recovering from a recent earthquake and has just started an initial alignment.

• Wind is low, microseism on the rise but still low
• All other systems nominal

Almost thought there was a chance we were going to ride through this earthquake (L1 went down 14 min before us), but alas the ground motion was too much for H1 and caused a lockloss.  This ended a nearly 6.5hr lock for today's shift.  Observatory Mode is in the EARTHQUAKE state until we get back to NLN.  Will Stay in Prep For Locking for atleast 30more min.

After returing to Observing for about 18min post-Saturday-Calibration, noticed that the DARM FOM trace was above reference at high frequency (+ "H1 Live" trace on nuc33 was also above the reference).  Consulted the Troubleshooting SQZ wiki, dropped out of Observing, and did the following:

1. Ran SCAN_SQZANG_FDS:  This made DARM FOM look better (back at reference for high frequency, but it was still higher for the "H1 Live" trace on nuc33).
2. Adjusted OPO Temperature:  Able to increase H1:SQZ-CLF_REFL_RF6_ABS_OUTPUT a bit (see attached), but still higher for the "H1 Live" trace on nuc33.  Then returned to Observing.

These adjustments had H1 out of Observing from 1917-1922utc.  It has now been 10min, and it is looking like I have made the range worse (looking like range is ~15Mpc worse).  Will give it more time and see how it goes while I grab lunch.

Measurement NOTES:

• Posted heads up reminder for the Sat Morning Calibration on the IGWN channel on Mattermost.
• Following instructions (link)
• H1 at NLN for for almost 2hrs55min (over 3hrs at 60W).
• Calibration_Monitor medm screenshot is attached
• 1830-1859 utc Out of Observing for CALIBRATION
•  Broadband measurement started at 1434565843.086414 (18:30:25utc)
  • Measurement at:  /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250621T183025Z.xml
•  Simullines measurement
  • gps START time:  1434566163.985407 (18:35:45utc)
  • gps STOP time: 1434567563.816039 (18:59:95utc)
  •  File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20250621T183546Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20250621T183546Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20250621T183546Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20250621T183546Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/
• 1859 ISC_LOCK taken back to NLN for observing

Attached is a screenshot of the Calibration Monitor + pdf of Pydarm Report

Sat Jun 21 10:10:09 2025 INFO: Fill completed in 10min 5secs

H1 is back to Observing.  As noted earlier, took the opportunity to take care of some housekeeping tasks:

• Timing allowed for a 2nd alignment to happen at a time when the BS was cooled off over an hour.
• Alignment above happened after INIT ALIGN was reloaded (to get PRC ALIGN OFFLOADED back into INITIAL ALIGNMENT).
• ISC LOCK was also LOADed.
• DRMI locked up fairly smoothly and automatically.
• H1 hit 60 wats at 1526utc
• Had (2) SDFs diffs (for "H1:LSC-REFL_SUM_{A,B}_IN2GAIN") in CS_ISC related to what Elenna mentions in alog 85206.  These were ACCEPTED (see attached).

Next uip:  Take the Saturday Morning Calibration in about 2.5hrs *knock on wood*

Per Elenna's alog85200 yesterday + RyanS's subentry (with updated INIT ALIGN), Ran a 2nd INITIAL ALIGNMENT this morning for two reasons (to (1) enact Ryan's changes with a RELOAD of INIT ALIGN, and (2) to let the BS chill for about 65min).

Looks like the PRC ALIGN OFFLOADED worked fine as Elenna notes (see attached IR signals during alignment.