TITLE: 03/30 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

Nice shift with H1 running decently even as the weather turned a bit in the evening (w/ 30+mph winds and rain as the sun set....but then calmed down toward the end of the shift).  At shift's end, H1's current lock is over 7hrs (with one GW-candidate).
LOG:

• 0135 Superevent S250331o

We had a BSC3 sensor glitch at 16:39:16 resulting in a single VACSTAT alarm. I restarted the service at 16:50 to clear this alarm.

I also set the FMCS Reverse Osmosis alarm into silent mode so it will only email and not text for the next 24 hours.

Bypass will expire:
Mon Mar 31 04:57:28 PM PDT 2025
For channel(s):
    H0:FMC-CS_WS_RO_ALARM
 

TITLE: 03/30 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: We've been locked for 1.5 hours. The ground has been doing the tectonic shuffle this morning with a group of earthquakes and aftershocks from Tonga, 7.0, 4.8, 6.1, 4.9, 5.8...
LOG: No log.

The porta potty outside the FCES has also been knocked over, and OSB receiving is blocked by tumbleweeds. (Tagging FMCS)

• 12:31:01 Earthquake mode activated
• 12:31:23 UTC 7.0 from Tonga arrived, lockloss
  • 15:50 UTC 6.1 from Tonga arrived
  • 16:55 UTC Initial alignment
  • 18:16 UTC Observing
• 20:34 UTC lockloss from an ETMX glitch
  • 22:55 UTC Observing, the SQZer seemed to lock at a slightly worse spot than the previous locks
  • 22:30 another EQ from Tonga (5.2) came through but we survived

TITLE: 03/30 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 16mph Gusts, 11mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.15 μm/s
QUICK SUMMARY:

H1 has been at NLN for 1.5+hrs. 

There is a CDS Alarm for the RO (reverse osmosis) system.  Happened to phone Tyler earlier today with water questions and he mentioned he turned off both RO skids this morning (@943amPDT).

Environmental noise wise, secondary µseism is lower than 24hrs (looks like it's flattened out squarely at the 50th percentile  about 7hrs ago).  Winds are a little are a touch more breezy than yesterday, but still well under 20mph.

20:34 UTC lockloss, it appears to have been from an ETMX glitch

Sun Mar 30 10:11:04 2025 INFO: Fill completed in 11min 1secs

TC-B slightly noisy.

TITLE: 03/30 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: EARTHQUAKE
    Wind: 8mph Gusts, 5mph 3min avg
    Primary useism: 0.51 μm/s
    Secondary useism: 0.16 μm/s
QUICK SUMMARY:

• 12:31 UTC lockloss (EQ)
• We're currently down from a 7.0 from Tonga, probably another two or three hours till the ground motion subsides enough for locking
• SUS OPO and FC2 were tripped along with HAMs 2,3,4,5,7,8's ISIs

TITLE: 03/29 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

Quiet shift with H1 locked the whole time (currently at about 7.5hrs).  Squeezed in a successful Calibration while L1 was down.  Secondary microseism continues downward trend from the last 24+hrs (touching 50th percentile line).  Winds touched ~20mph, but have mostly meen much calmer.
LOG:

• 0127-0157 Saturday Calibration measurement

After noticing that L1 was down, started running Calibration measurments since H1 was now thermalized.

Measurement NOTES:

• Following instructions (link)
• H1 at NLN for for over 3hrs54min
• Calibration_Monitor medm screenshot is attached
• 0127- 0157utc Out of Observing for CALIBRATION
•  Broadband measurement started at 1427333255
  • Measurement at:  /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20250330T012727Z.xml
•  Simullines measurement
  • gps START time:  1427333622.245412
  • gps STOP time: 1427335020.945731
  •  File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20250330T013325Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20250330T013325Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20250330T013325Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20250330T013325Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20250330T013325Z.hdf5
• Then ISC_LOCK was taken back to NLN for observing

TITLE: 03/29 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 7mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.19 μm/s
QUICK SUMMARY:

Ryan C handed over an Observing H1.  Have had (5) locklosses from Observing over last 24hrs with only 2 of those from last night being due to wind (winds are much lower this evening and secondary µseism continues to plummet).

Perhaps if L1/V1 go down any time after an hr from now (after 3hr thermalization), I could take the opportunity to run a calibration. 

TITLE: 03/29 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: I was able to get a coherence measurement during the first lock. We've relocked 3 times this shift, no issues relocking.
LOG:                                                                                    

I've been damping ITMY modes 5/6 with half the nominal gain (0.005) during the second/third lock as I wasn't totally convinced the damping was going well before with the higher gain. 3/4 monitors were going down but the DARM line height on DTT wasn't really changing. TJ said he had success with this lower gain the other day as well. I put the new damping settings for ETMY mode1 into lscparams.

• 14:17 UTC observing
  • 18:12 UTC lockloss
• 19:29 UTC observing
  • 20:22 UTC lockloss, DARM wiggle before the LL?
• 21:36 UTC observing

20:22 UTC lockloss

18:13 UTC lockloss right before the scheduled calibration suite, sad

Sat Mar 29 10:13:20 2025 INFO: Fill completed in 13min 16secs

TC-B was quite noisy during the fill today.

TITLE: 03/29 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 141Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 1mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.26 μm/s
QUICK SUMMARY:

• 14:17 UTC observing
• The wind is much lower
• Secondary microseism is decreasing