TITLE: 11/17 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 145Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: I shuffling around a bit of code in LOWNOISE_ESD_ETMX to hopefully stop the locklosses the states is inducing. We've been locked for a little under 7 hours.
LOG: No log.

• 16:14 UTC LOWNOISE_ESD_ETMX lockloss
• 17:51 UTC Observing
  • I editing the LOWNOISE_ESD_ETMX state, I added a timer equal to the bias ramp time, and moved the troublesome lines from the main method to the end of the run method after the bias has finished ramping. I again forgot to reload ISC_LOCK before returning to Observing. Starting at line 5516 in ISC_LOCK.py:

TITLE: 11/17 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 145Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 13mph Gusts, 9mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.30 μm/s 
QUICK SUMMARY:

IFO is in NLN and OBSERVING as of 17:51 UTC (6 hr lock)

Ryan C reports the same LOWNOISE_ESD_ETMX issue as before occured this morning but after moving the drivealign gains past the bias ramping and loading guardian, it seems the issue has been fixed. It technically hasn't been tested yet so we'll see when we relock.

Otherwise, wind and microseism look good. Hoping for a smooth and quiet shift.

Sun Nov 16 10:14:59 2025 INFO: Fill completed in 14min 56secs

Closes FAMIS27539, last checked in alog88024.
Laser Status:
    NPRO output power is 1.871W
    AMP1 output power is 70.67W
    AMP2 output power is 139.0W
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 16 days, 17 hr 50 minutes
    Reflected power = 24.6W
    Transmitted power = 106.3W
    PowerSum = 130.9W

FSS:
    It has been locked for 0 days 0 hr and 11 min
    TPD[V] = 0.5264V

ISS:
    The diffracted power is around 4.1%
    Last saturation event was 0 days 0 hours and 51 minutes ago

Possible Issues:
    PMC reflected power is high

TITLE: 11/16 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Aligning
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.26 μm/s 
QUICK SUMMARY:

• 14:40 UTC lockloss
  • Running an initial alignment
• Microseism is below the 90th percentile

TITLE: 11/16 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 142Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 22:09 UTC (12 hr 40 min Lock)

Microseism has leveled out ad wind is low. Calm shift - locked and observing the whole time.

Throughout the whole lock, the range seems to be trending down very slowly and it seems to be in the low-mid frequency range (DARM looks noise from 40-300Hz) - can't pinpoint a cause.

LOG:

None

TITLE: 11/15 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: We recovered Observing once the microseism decreased and after fixing an ISC_LOCK typo. We've been locked for almost 7 hours.
LOG: No log.

• I cleared a CMB_EXC from SQZ_OPO following an alog from Corey alog87967 while relocking (SQZ)
• 15:57 UTC Lockloss from LOWNOISE_ESD_ETMX
• 16:48 UTC Successfully passed through ESD_ETMX
• 17:14 UTC NLN where I turned off the FF and put in the settings that I commented out, then re-ramped the FF alog88116
• 17:24 UTC Observing
• 21:30 UTC calibration measurement, I postponed as LLO relocked only an hour after we did. I tried to text and voice message over teamspeak with them but didn't hear back
  • I reloaded ISC_LOCK before starting
• After the calibration measurement finished, I ran SCAN_OPO_TEMP as SQZ didn't look the best (it didn't seem to help)
• 22:09 UTC Observing

TITLE: 11/15 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 6mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.30 μm/s 
QUICK SUMMARY:

IFO is in NLN and OBSERVING as of 22:09 (6 hrs 45 mins) with a 30 min gap for planned calibration)

Microseism is down. Wind is down. Hoping for a quiet shift in OBSERVING.

Broadband:
Start: 2025-11-15 21:31:45 UTC

Stop: 2025-11-15 21:36:56 UTC

File: /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/PCALY2DARM_BB_20251115T213145Z.xml

Simulines:

Start: 2025-11-15 21:37:23.97 UTC // 1447277861.97 GPS

Stop: 2025-11-15 22:00:39.86 UTC // 1447279257.86 GPS

Files:

2025-11-15 22:00:39,689 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20251115T213724Z.hdf5
2025-11-15 22:00:39,697 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20251115T213724Z.hdf5
2025-11-15 22:00:39,701 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20251115T213724Z.hdf5
2025-11-15 22:00:39,706 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20251115T213724Z.hdf5
2025-11-15 22:00:39,711 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20251115T213724Z.hdf5
 

Sat Nov 15 10:14:01 2025 INFO: Fill completed in 13min 57secs

RyanC, Jenne, RyanS

The ground and wind finally let us lock which let me get to and fix the following small software issue to recover Observing.

16:26 UTC I removed an errant 'H1:' (good eye RyanS) in a ezca call in LOWNOISE_ESD_ETMX, and commented out the newest lines Jenne added at her suggestion and reloaded ISC_LOCK. Here are some the quads L3 lock filters right after LOWNOISE_ESD_ETMY finishes. I was then able to get back up to NLN after spending ~10 minutes in OMC_WHITENING 

From LOWNOISE_ESD_ETMX's main method I commented out:

TITLE: 11/15 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 19mph Gusts, 14mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.28 μm/s 
QUICK SUMMARY:

• We've been down all night
  • Relocking at CARM_TO_ANALOG
• Microseism keeps declining
• Wind is low

Called for the thrid time tonight:
First 2 times I just thought it was the wind kinda gusting too hard during LOWNOISE_ESD_ETMX as it was faily gusty between Costco & target here.
But.... this time the wind had calmed down significantly.

In the Last 4 Hours We have lost lock in the exact same spot 5 times.  Each time there is a Lownoise_ESD_ETMY state, then 4 seconds of Lownoise ETMX state then lockloss.

Troubleshooting: 
Maybe the issue is here: alog 88089. So I quickly reverted the changes in the code here right after power up, but I guess the power to the ITM ESD was tunt off as stated in that alog. So now I'm stuck at Transistion_From_ETMX with no way out except for manualing back to Lownoise_Coil_driver. Reverting my changes then Loading the guardian again and pushing forward to Lownoise_ESD_ETMY. 

Now  I'm hanging out at Low noise ESD ETMY for greater than 4 seconds, So we can rightfully say that the issue is in Lownoise_ESD_ETMX.
When I clicked into Lownoise_ESD_ETMX my Guardian back ground flashed red... indicating guardian issues , then:
E_X   (Nov 15 14:54:58 UTC)
E_Y   (Nov 15 14:54:58 UTC)
I_X   (Nov 15 14:54:58 UTC)
DRMI Unlocked   (Nov 15 14:54:58 UTC)
HAM6   (Nov 15 14:55:03 UTC)
ISC_LOCK state: DOWN   (Nov 15 14:55:04 UTC)
So the issue is certainly in LOWNOISE_ESD_ETMX. 

TITLE: 11/15 Owl Shift: 0600-1530 UTC (2200-0730 PST), all times posted in UTC
STATE of H1: Wind
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 22mph Gusts, 18mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.34 μm/s 
QUICK SUMMARY:

H1 called me, to watch it get locked again. 
Another lockloss at Lownoise_ESD_ETMY... 
I did another Initial_Alignment after that lockloss. we are currently just past DRMI again.
I will let it try again. The wind forecast looks like it will stay gusting in the 20's for a few hours but may start slowing around 11UTC. 

TITLE: 11/15 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Wind
INCOMING OPERATOR: Tony
SHIFT SUMMARY:

IFO is in ENGAGE_ASC_FOR_FULL_IFO and ENVIRONMENT

Still not locked due to wind and microseism.

Microseism just went below the 90% line where it's now lockable. As that happened we got gusts of wind from 35 to 45mph. The wind just went below 30mph so I think this lock acquisition might just work!

We lost lock over 30 times in this acquisition, making it to TRANSITION_FROM_ETMX twice before losing lock seemingly due to instability.

LOG:

None

Attached is the mode-matching layout for the VOPO. The target primary waist of the VOPO (from TT1700104) is 221.2um(s), 206um(t) for 1064nm and 159.2um(s), 148.8um(t) for 532nm.

The mode matched minor and major beam waist is 198.6um, 204.2um for 1064nm and 152.6um, 185um for 532nm. For the fundamental injection via the rear mirror, the measured waist is 197.25um, 231.85um. These waist is measured at the position marked with a "star". The mode-matching calculation has been reviewed by a fur-low scientist.