FAMIS 31107

The main changes that can be seen this week are a result of our amplifier pump diode current adjustments on Tuesday (alog87338). Otherwise, no major events this week.

TITLE: 10/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 17mph Gusts, 12mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.22 μm/s 
QUICK SUMMARY: Locked for 21.5 hours. No alarms, two GRB shorts overnight.

• 0804 GRB short E609675
• 0825 GRB short E609680

TITLE: 10/13 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 151Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

IFO is in NLN and OBSERVING (12 hr lock)

We were locked for the entirety of shift.

The range came back over the course of the shiftso did not have to leave OBSERVING to touch up the squeezer.

Wind and ground motion look good

LOG:

TITLE: 10/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: One lock loss that only needed initial alignment but full auto. After we thermalized I ran a calibration sweep in coordination with LLO. The range for this most recent lock looks to be trending down slightly. The SQZ blrms see it, but Ibrahim will keep an eye on things.
LOG:

• 1515 Lock loss
• 1659 Observing
• 1958 Out of observing for a calibration measurement
• 2029 Observing

TITLE: 10/12 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 27mph Gusts, 21mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.22 μm/s 
QUICK SUMMARY:

IFO is in NLN and OBSERVING (6 hr lock).

Range is slowly going down seemingly due to SQZ. Wind is also picking up. If range continues to degrade, will re-tune the squeezer.

FAMIS27825

No water added, values all looked good and were recorded into the sheet T2200289 sheet.

I somehow missed this and its a week late, next one should run next week.

Coordinated a calibration measurement with LLO since we couldn't get it done yesterday. Back into observing 2029UTC

Simulines start:

PDT: 2025-10-12 13:04:59.811759 PDT
UTC: 2025-10-12 20:04:59.811759 UTC
GPS: 1444334717.811759

Simulines end:

PDT: 2025-10-12 13:28:25.449920 PDT
UTC: 2025-10-12 20:28:25.449920 UTC
GPS: 1444336123.449920

Files:

2025-10-12 20:28:25,294 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_
SS/DARMOLG_SS_20251012T200500Z.hdf5
2025-10-12 20:28:25,302 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DA
RM_SS/PCALY2DARM_SS_20251012T200500Z.hdf5
2025-10-12 20:28:25,308 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_
L1_SS/SUSETMX_L1_SS_20251012T200500Z.hdf5
2025-10-12 20:28:25,312 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_
L2_SS/SUSETMX_L2_SS_20251012T200500Z.hdf5
2025-10-12 20:28:25,317 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_
L3_SS/SUSETMX_L3_SS_20251012T200500Z.hdf5
 

Sun Oct 12 10:08:26 2025 INFO: Fill completed in 8min 22secs

We've recently been having some issues with SRM tripping during initial alignment and during DRMI acquisition, alog87370 for example. After consulting with Jeff K, I've bumped up the trip thresholds as listed below. This was based off of the last few trips, so hopefully it has enough of a buffer now. Saved in the safe and observe sdfs.

Lock loss 1444317365

No obvious cause, ended a 29.5hour lock.

TITLE: 10/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.28 μm/s 
QUICK SUMMARY: Locked for 28.7 hours, range is stable, no alarms, no alerts overnight.

TITLE: 10/12 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

IFO is in NLN and OBSERVING (19 hr lock!)

Range is stable. Environment is stable. Locked for the whole shift.

LOG:

None

TITLE: 10/11 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 15mph Gusts, 8mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.20 μm/s 
QUICK SUMMARY:

IFO is in NLN and OBSERVING

Calibration sweep was not run this morning due to LLO not being thermalized. TJ plans on running it tomorrow with LLO. 

Otherwise, LHO has been quietyl observing for ~14 hours!

TITLE: 10/11 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Locked for almost 14hours. Range has been stable. Public tours came through, but it's been a very quiet shift.
LOG:

• 2212 GRB short E609151

Locked and observing for 9.5 hours. H1 and L1 have moved the calibration sweep to tomorrow since we could not get a coordinated time in today.

Sat Oct 11 10:08:39 2025 INFO: Fill completed in 8min 36secs

TITLE: 10/11 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 6mph Gusts, 2mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.18 μm/s 
QUICK SUMMARY: Locked for almost 5 hours, no alarms, calm environment. Af ew GRB alerts and one lock loss over the night. 

• 0342 GRB short E608872
• 0709 GRB short E608943
• 0709 GRB short E608942
• 0801 Lock loss
• 0944 Observing

TITLE: 10/11 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 00:38 UTC

After the initial alignment at the start of the shift, IFO locked fully automatically. The wind has also since calmed down. 

LOG:

Closes FAMIS 27427, Last checked in alog 87284

Corner Station looks good - nothing of note

Outstations look good too except for EX, which had a peak on Tuesday. This isn't a problem and is corroborated by Eric's alog 87343, reporting a fan bearing replacement on this fan. Everything has looked quiet since.

Screenshots attached.