aLIGO LHO Logbook

H1 PSL - Comment to Locklosses today, FSS

sheila.dwyer@ligo.org — Fri, 04 Oct 2024 22:32:58 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80477

To summarize, Ryan looked at 8 locklosses from today, 6 of them had the FSS tag, 5 of them had the IMC loose lock withing 15ms of the IFO losing lock, and only 3 of them had the pattern that Ian and Camilla found was normal in O4a, where the IMC looses lock ~250 ms after the IFO losses lock. This FSS issue seems to be having a serious impact on our duty cycle.

I had a helpful conversation with Rick this afternoon about this issue, he sugested that we trying looking for the glitches in other places in the PSL, so that we could think about tests where we don't run some of the feedback servos and see if we still see the issue. I made an ndscope template with all the PSL fast channels I could find, it is saved in sheila.dwyer/ndscope/PSL/PSL_fast_channels.yaml

Looking at 1412111658 with this scope, it looks like several of these channels that we are saving at a fast rate might not be connected, for example the OSC and HPL channels are around 0. The only other channel that clearly shows these glitches is H1:PSL-PWR_NPRO_OUT_DQ.

Request for operators: If you are having locking difficulties over the weekend, it may be due to the PSL/FSS problems. To help narrow down the cause of the problem one could sit for an hour or two with the FSS unlocked, and the ISS unlocked. If the glitches show up in the NPRO channel even without these servos locked, then we will know that the problem is not from the FSS, but from the NPRO.

Lockloss, OpsInfo, PSL

Images attached to this report

H1 General - OPS Friday EVE shift summary

ryan.crouch@ligo.org — Fri, 04 Oct 2024 22:00:26 -0700

Author: ryan.crouch@ligo.org

Report ID: 80473

TITLE: 10/05 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: 1 lockloss, automated relock, the wind is decreasing and the micoseism also seems to be (slowly...). We've been locked for just over an hour.
LOG: No log

23:17 OMC_WHITENING to damp violins
10/04 23:27 UTC Observing
- I ran a coherence check right before we lost lock
02:50 UTC lockloss alog80472
- IMC_LOCK is struggling as the FSS keeps unlocking
- 03:59 UTC Observing
- 04:10 UTC, I adjusted the OPO temperature and we gained ~10 Mpc (~145 -> ~155)
- 05:00 UTC, I again adjusted the OPO temp

Images attached to this report

H1 General - Locklosses today, FSS

ryan.crouch@ligo.org — Fri, 04 Oct 2024 21:43:04 -0700

Author: ryan.crouch@ligo.org

Report ID: 80475

More investigation similar to alog80358

NLN 1412064049 lockloss tool, no tag, FSS chans looks stable.

AS_A_DC and IMC-TRANS loose lock within ~250 ms

PREP_DC_READOUT_TRANSITION 1412066248 lockloss tool, FSS tag

AS_A_DC and IMC-TRANS loose lock within 1 ms of each other, but the FSS chans look stable before hand

NLN 1412077192 lockloss tool, tool failed

AS_A_DC and IMC-TRANS loose lock within ~5 ms, small FSS glitching starts almost 2 mins before LL, large glitch 1/2 a sec before

NLN 1412084422 lockloss tool, No FSSery

AS_A_DC and IMC-TRANS loose lock within ~250 ms

NLN 1412092628 lockloss tool, FSS tag

AS_A_DC and IMC-TRANS loose lock within ~5 ms, FSS glitching starts 5 secs before LL

NLN 1412101888 lockloss tool, FSS tag

AS_A_DC and IMC-TRANS loose lock within ~250 ms

TRANSITION_FROM_ETMX 1412105312 lockloss tool, FSS tag

AS_A_DC and IMC-TRANS loose lock within ~ 13 ms, the FSS starts glitching 40 seconds before LL, FSS_PC_MON_OUTPUT starts rising ~40 seconds before LL

LOW_NOISE_ESD_ETMX 1412113952 lockloss tool, no FSSery

AS_A_DC and IMC-TRANS loose lock within ~250 ms

NLN 1412131865 lockloss tool, FSS tag

AS_A_DC and IMC-TRANS loose lock within ~1 ms, there's a FSS glitch 1 second before the LL

ISC, Lockloss, PSL

Images attached to this report

H1 General - Comment to Lockloss 02:50 UTC

ryan.crouch@ligo.org — Fri, 04 Oct 2024 21:00:28 -0700

Author: ryan.crouch@ligo.org

Report ID: 80476

03:59 UTC Observing, automated relock with 1 round of check_mich, and 2 of PRMI and DRMI.

H1 General - Comment to Lockloss 02:50 UTC

ryan.crouch@ligo.org — Fri, 04 Oct 2024 20:10:46 -0700

Author: ryan.crouch@ligo.org

Report ID: 80474

Lockloss tool tagged FSS_OSCILATION

AS_A_DC and IMC-TRANS lost lock within 1 ms of eachother

ISC, Lockloss

Images attached to this report

H1 General - Lockloss 02:50 UTC

ryan.crouch@ligo.org — Fri, 04 Oct 2024 19:51:49 -0700

Author: ryan.crouch@ligo.org

Report ID: 80472

02:50 UTC lockloss

Lockloss

H1 General - Comment to OPS Friday EVE shift start

ryan.crouch@ligo.org — Fri, 04 Oct 2024 16:34:29 -0700

Author: ryan.crouch@ligo.org

Report ID: 80471

23:27 UTC Observing

LHO General - Fri Ops DAY Shift Summary

corey.gray@ligo.org — Fri, 04 Oct 2024 16:26:32 -0700

Author: corey.gray@ligo.org

Report ID: 80459

TITLE: 10/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:

A bit of a rough day with H1. Had two short locks and then it was rough going with locking, and then it got worse with winds in the afternoon. BUT, at the end of the shift H1 was able to get to OMC WHITENING---the violin modes are elevated.
LOG:

1445 H1 back to OBSERVING
1454-1508 Optics Lab check & clean (kim)
1517 Phoned non-emergency Hanford Patrol dispatch to let them know that Robert & colleagues will be making magnetic field measurements from the road near the power lines this morning.
1556 LOCKLOSS
- 1621 DRMI lockloss---I had touched SRM in yaw to assist locking; DRMI locked (then lost lock); manually selected CHECK MICH FRINGES and eventually made it to past DRMI
- For this lock, I followed Sheila's instructions (alog 80461) to make an OPO temperature adjustment before ISC_LOCK injected squeezing (this adjustment only took a few minutes). Apparent results are a slightly better range around 160Mpc.
1606-1743 Magnetic field measurements along Y-arm with 2 vans and a couple rental cars (Anamaria, Robert, Cosmic Explorer group)
- 1743-1913 Then they moved offsite around the intersection of Rt10 & Alabama Rd to take more of these measurements until about noon (local time)
1617-1632 Pcal lab photos (rick)
1831 LOCKLOSS
- Locklosses at TRANSITION TO ETMX, SHUTTER ALS, FIND IR, soooo, went for an....
- 1956-2016 Initial Alignment
- Locklosses at ALS, MAX POWER, ALS, FIND IR, LOWNOISE ESD...
- useism is above the 50th percentile and the winds have picked up this afternoon.
- 2204 Marking Observatory Mode as WINDY (should have done this earlier)
2015 Picking up parts at MX (mitch, ibrahim)

H1 General - OPS Friday EVE shift start

ryan.crouch@ligo.org — Fri, 04 Oct 2024 16:08:43 -0700

Author: ryan.crouch@ligo.org

Report ID: 80470

TITLE: 10/04 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Wind
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 29mph Gusts, 16mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.22 μm/s
QUICK SUMMARY:

Between the high winds (gust of >30mph & 3min avg ~20mpg), and high microseism (fully above the 50th percentile) holding ALS has been quite tough
We've had 3 high state locklosses so far on the way to recover NLN

H1 General - Comment to Mid Shift Status

corey.gray@ligo.org — Fri, 04 Oct 2024 15:21:44 -0700

Author: corey.gray@ligo.org

Report ID: 80469

Locking woes continue. Have had a couple of locks make it all the way past MAX POWER only to have locklosses, but most of our locklosses of late are early ISC LOCK stages. This is some weather. Winds are now in the 30mph range and microseism is above 50th percentile.

Images attached to this report

H1 General - Mid Shift Status

corey.gray@ligo.org — Fri, 04 Oct 2024 13:27:31 -0700

Author: corey.gray@ligo.org

Report ID: 80468

H1 continues to have a rough day with short locks, and it's gotten worse with H1 dropping out at various states while trying to get to NLN. Although H1, had been locking DRMI sort of decently, ran an Initial Alignment to see if this can help (it had been over 24hrs since the last IA was run).

For the last lock about 3hrs ago, OPO temperature was adjusted and this yielded a better range, but it was only locked 47min.

H1 PSL - PSL FSS PZT Locked Comparison H1 and L1

marc.pirello@ligo.org — Fri, 04 Oct 2024 12:10:26 -0700

Author: marc.pirello@ligo.org

Report ID: 80467

In the process of investigating the locklosses due to FSS glitching and working on spare chassis for the FSS in the PSL, we compared the power spectrum of the PZT monitor between H1 and L1. We found some difference in the power spectrum, plot attached.

PSL

Images attached to this report

H1 General - Comment to Lockloss @ 22:19 UTC

oli.patane@ligo.org — Fri, 04 Oct 2024 11:47:49 -0700

Author: oli.patane@ligo.org

Report ID: 80466

Comparing DARM to FSS fastmon and IMC trans out

Images attached to this report

H1 General - Comment to Control room has Internet access again and an unrelated Lockloss

oli.patane@ligo.org — Fri, 04 Oct 2024 11:21:00 -0700

Author: oli.patane@ligo.org

Report ID: 80465

Definitely looks like the FSS had a large glitch and lost lock before DARM saw the lockloss. This lockloss didn't have the FSS glitches happening before though.

Images attached to this report

H1 OpsInfo - OPO temperature adjustment instructions

sheila.dwyer@ligo.org — Fri, 04 Oct 2024 10:40:54 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80461

Because we moved the OPO crystal position yesterday, 8045, the crystal absorption will be changing for a few weeks, and we will need to adjust the temperature setting for the OPO until it settles, as Tony and I did last night. 80455. Here are two sets of instructions, one that can be used while in observing to adjust this, and one that can be done when we loose lock or are out of observing for some other reason.

For these first few days, please follow the out of observing instructions when relocking, if this hasn't been done in the last few hours, and please try to do it in the last few hours of the evening shift so that the temperature is close to well tuned at the start of the owl shift.

Out of observing instructions (to be done while recovering from a lockloss, can be done while ISC_LOCK is locking the IFO) (screenshot) :

Make sure that ISC_LOCK will not set SQZ_MANAGER request to INJECT_SQZ, by setting the request to ADS_TO_CAMERAs or any lower state.
From sitemap, SQZ_OVERVIEW, set SQZ MANGER request to LOCKED_SEED_NLG.
from the purple !SQZ scopes button, open the NLG scope
Once the SQZ manger is in LOCKED_SEED_NLG, you should see that the red OPO_IR_TRANS trace on the scope is oscillating. Adjust the OPO temperature using the slider which is right under the purple SQZ scopes button, to maximize the peak of the oscillations.
SET_SQZ MANGER request back to FDS_READY_IFO, and once that's ready you can set the ISC_LOCK request to nominal low noise.
Before going to observing, you can adjust the squeezing angle by requesting SQZ_MANAGER to SCAN_SQZANG. It is best practice to do this after the IFO has thermalized, but it can be done early in the lock. If lock stretches are long and this has been done only early in the lock, it may need adjusting for a thermalized IFO. Right now the squeezing angle has a strong frequency dependence early in the lock stretch, so let's not adjust it until the IFO has been locked for at least an hour.

In observing instructions:

Both the OPO temperature and the SQZ phase are ignored in SDF and can be adjusted while we are in observing, but it's important to log the times of any adjustments made.

To adjust the temperature in full lock, go to the purple SQZ_SCOPE button and choose the OPO temp scope, adjust the OPO temperature to maximize CLF_REFL_RF6_ABS (the green trace).
After doing this it might be necessary to adjust the SQZ PHASE, which can be adjusted in steps of 5 degrees or so. Set this to maximize the squeezing level, which you can do by watching the DARM FDS dtt template. It is available from the SQZ DTT purple button, or on NUC33. It is easiest to adjust this for high frequency squeezing (around 1kHz), this should get you close to good squeezing at 100 Hz.

Changes made to make this easier (Thanks Corey for beta testing the instructions):

I've commented out the request to SQZ_MANGER that ISC_LOCK makes in low noise length control, because that took control of the squeezer from Corey when he was giving these instructions a trial.
The OPO temp is not monitored in SDF
I removed the goto= True from the LOCK_FSS state. This will force SQZ_MANAGER to go through down after the NLG measurement (and turn off the seed PZT ramp).

SQZ

Images attached to this report

H1 ISC - one DRMI lockloss investigation

sheila.dwyer@ligo.org — Fri, 04 Oct 2024 10:05:11 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80464

Corey has had a series of locklosses from DRMI/PRMI and ALS, I've looked into one of these: 1412094082

In this case it looks like there is a large glitch seen in all DRMI LSC signals (and ASC, but it seems to start in LSC), with a small glitch about 4 seconds before lockloss, which DRMI recovers from. Then there is a larger glitch that happened about 1 second before lockloss, where POP18 drops below the trigger threshold, and the DRMI guardian goes to DOWN, at the same time the ALS Y arm looses green lock, which then unlocks the ALS X arm.

This glitch doesn't seem to be cause by the DRMI ASC, although we were in the process of engaging that ASC when it happened. It also isn't due to the BS ISI isolation coming on, which hadn't happened yet.

Edit: I looked into a second lockloss, from PRMI: 1412095134, this one is different in that it happens very quickly and PRMI and ALS signals drop out at close to the same time. This happened while the DRMI guardian was waiting for the refl WFS centering to converge.

Images attached to this report

H1 PSL - PSL Status Report (FAMIS #26303)

corey.gray@ligo.org — Fri, 04 Oct 2024 09:48:00 -0700

Author: corey.gray@ligo.org

Report ID: 80463

For FAMIS 26303:
Laser Status:
    NPRO output power is 1.818W (nominal ~2W)
    AMP1 output power is 64.55W (nominal ~70W)
    AMP2 output power is 137.7W (nominal 135-140W)
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 0 days, 22 hr 2 minutes
    Reflected power = 22.1W
    Transmitted power = 104.0W
    PowerSum = 126.1W

FSS:
It has been locked for 0 days 0 hr and 7 min
TPD[V] = 0.8089V

ISS:
The diffracted power is around 2.4%
Last saturation event was 0 days 0 hours and 7 minutes ago

Possible Issues:
AMP1 power is low
PMC reflected power is high

PSL

H1 SEI - SEI ground seismometer mass position check - Monthly (#26494)

corey.gray@ligo.org — Fri, 04 Oct 2024 09:24:21 -0700

Author: corey.gray@ligo.org

Report ID: 80462

Monthly FAMIS Check (#26494)

T240 Centering Script Output:

Averaging Mass Centering channels for 10 [sec] ...
2024-10-04 09:08:54.264102
There are 14 T240 proof masses out of range ( > 0.3 [V] )!
ETMX T240 2 DOF X/U = -0.745 [V]
ETMX T240 2 DOF Y/V = -0.637 [V]
ETMX T240 2 DOF Z/W = -0.529 [V]
ITMX T240 1 DOF X/U = -1.51 [V]
ITMX T240 1 DOF Y/V = 0.325 [V]
ITMX T240 1 DOF Z/W = 0.447 [V]
ITMX T240 3 DOF X/U = -1.563 [V]
ITMY T240 3 DOF X/U = -0.773 [V]
ITMY T240 3 DOF Z/W = -1.934 [V]
BS T240 1 DOF Y/V = -0.394 [V]
BS T240 3 DOF Y/V = -0.307 [V]
BS T240 3 DOF Z/W = -0.49 [V]
HAM8 1 DOF Y/V = -0.475 [V]
HAM8 1 DOF Z/W = -0.786 [V]
All other proof masses are within range ( < 0.3 [V] ):
ETMX T240 1 DOF X/U = -0.083 [V]
ETMX T240 1 DOF Y/V = -0.1 [V]
ETMX T240 1 DOF Z/W = -0.159 [V]
ETMX T240 3 DOF X/U = -0.106 [V]
ETMX T240 3 DOF Y/V = -0.165 [V]
ETMX T240 3 DOF Z/W = -0.093 [V]
ETMY T240 1 DOF X/U = 0.009 [V]
ETMY T240 1 DOF Y/V = 0.116 [V]
ETMY T240 1 DOF Z/W = 0.173 [V]
ETMY T240 2 DOF X/U = -0.083 [V]
ETMY T240 2 DOF Y/V = 0.171 [V]
ETMY T240 2 DOF Z/W = 0.03 [V]
ETMY T240 3 DOF X/U = 0.182 [V]
ETMY T240 3 DOF Y/V = 0.029 [V]
ETMY T240 3 DOF Z/W = 0.109 [V]
ITMX T240 2 DOF X/U = 0.127 [V]
ITMX T240 2 DOF Y/V = 0.258 [V]
ITMX T240 2 DOF Z/W = 0.22 [V]
ITMX T240 3 DOF Y/V = 0.117 [V]
ITMX T240 3 DOF Z/W = 0.104 [V]
ITMY T240 1 DOF X/U = 0.078 [V]
ITMY T240 1 DOF Y/V = 0.083 [V]
ITMY T240 1 DOF Z/W = -0.061 [V]
ITMY T240 2 DOF X/U = 0.054 [V]
ITMY T240 2 DOF Y/V = 0.185 [V]
ITMY T240 2 DOF Z/W = 0.092 [V]
ITMY T240 3 DOF Y/V = 0.066 [V]
BS T240 1 DOF X/U = -0.162 [V]
BS T240 1 DOF Z/W = 0.087 [V]
BS T240 2 DOF X/U = -0.09 [V]
BS T240 2 DOF Y/V = 0.007 [V]
BS T240 2 DOF Z/W = -0.113 [V]
BS T240 3 DOF X/U = -0.206 [V]
HAM8 1 DOF X/U = -0.28 [V]

Assessment complete.

STS Centering Script Output:

Averaging Mass Centering channels for 10 [sec] ...
2024-10-04 09:22:39.265893
There are 1 STS proof masses out of range ( > 2.0 [V] )!
STS EY DOF X/U = -2.389 [V]
All other proof masses are within range ( < 2.0 [V] ):
STS A DOF X/U = -0.514 [V]
STS A DOF Y/V = -0.927 [V]
STS A DOF Z/W = -0.438 [V]
STS B DOF X/U = 0.323 [V]
STS B DOF Y/V = 0.945 [V]
STS B DOF Z/W = -0.432 [V]
STS C DOF X/U = -0.723 [V]
STS C DOF Y/V = 0.743 [V]
STS C DOF Z/W = 0.539 [V]
STS EX DOF X/U = -0.224 [V]
STS EX DOF Y/V = -0.05 [V]
STS EX DOF Z/W = 0.084 [V]
STS EY DOF Y/V = 0.007 [V]
STS EY DOF Z/W = 1.209 [V]
STS FC DOF X/U = 0.24 [V]
STS FC DOF Y/V = -1.04 [V]
STS FC DOF Z/W = 0.636 [V]

Assessment complete.

SEI

LHO VE - Fri CP1 Fill

david.barker@ligo.org — Fri, 04 Oct 2024 08:21:00 -0700

Author: david.barker@ligo.org

Report ID: 80460

Fri Oct 04 08:09:58 2024 INFO: Fill completed in 9min 55secs

Images attached to this report

LHO General - Fri Ops Day Transition

corey.gray@ligo.org — Fri, 04 Oct 2024 07:45:56 -0700

Author: corey.gray@ligo.org

Report ID: 80458

TITLE: 10/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: EARTHQUAKE
    Wind: 6mph Gusts, 3mph 3min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.22 μm/s
QUICK SUMMARY:

Walked in to see H1 at MAX POWER after a 59min lock. (There have been EQ spikes, in last few hours, but they do NOT line up with atleast the last 2 locklosses---for this current lock there was a M5.2 Iceland EQ which occured as H1 was stepping though ISC LOCK). This last 1340utc lockloss also does not have an FSS tag; 1139utc lockloss had a FAIL; 0845, 840, 837, utc locklosses all have an FSS Oscillation tag.

1445 Back to Observing.

PSL

H1 General - Thursday Eve Shift End

anthony.sanchez@ligo.org — Thu, 03 Oct 2024 22:03:39 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80457

TITLE: 10/04 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 142Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
Was a great shift, Locked the whole time. Dropped from opserving very breifly to adjust the SQZ OPO temp.

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
21:58	PEM	Robert, guests	Y-arm	n	CE equipment demonstration	00:49
21:58	PEM	Anamaria, guests	X-arm	n	CE equipment demonstration	01:58
00:36		Geoffrey	YARM	n	Picking up guests	00:56
00:51	VAC	Gerardo	Mid Y	N	Getting parts.	01:00

H1 SUS - Weekly In Lock SUS Charge measurements Famis Task 28373

anthony.sanchez@ligo.org — Thu, 03 Oct 2024 21:50:28 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80456

https://ligo-wa.accruent.net/LB_Request_UpdateElevate.asp?RequestID=28373

anthony.sanchez@cdsws25: ls -lt | head -n 6
total 507
-rw-r--r-- 1 test_user          controls   160 Sep 24 07:58 ETMX_12_Hz_1411225133.txt
-rw-r--r-- 1 test_user          controls   160 Sep 24 07:50 ETMY_12_Hz_1411224662.txt
-rw-r--r-- 1 test_user          controls   160 Sep 24 07:50 ITMY_15_Hz_1411224644.txt
-rw-r--r-- 1 test_user          controls   160 Sep 24 07:50 ITMX_13_Hz_1411224643.txt
-rw-r--r-- 1 test_user          controls   160 Sep 17 07:58 ETMX_12_Hz_1410620340.txt

These files are from the Prior week : https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80324

Looks like the SUS Charge measurements didn't run this week. :(

Images attached to this report

H1 General - SQZ OPO Temp adjustment

anthony.sanchez@ligo.org — Thu, 03 Oct 2024 21:35:46 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80455

Starting 3:46 UTC

I adjusted H1:SQZ-OPO_TEC_SETTEMP while Watching the H1:SQZ-CLF_REFL_RF6_ABS_OUTPUT ndscope ( OPO temo ndscope found on the SQZ scopes dropdown) to change the OPO Tec Temp.
ending at 3:50 UTC

Sheila and I discussed doing a SQZ Angle adjustment but it seemed fine at the time.

SQZ

Images attached to this report

H1 General - Thursday Eve Shift start

anthony.sanchez@ligo.org — Thu, 03 Oct 2024 16:42:16 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80454

TITLE: 10/03 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan Short
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:

H1 is currently in Nominal_LOW_NOISE[600] with little wind and decreasing secondary microseism.

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
21:58	PEM	Robert, guests	Y-arm	n	CE equipment demonstration	01:58
21:58	PEM	Anamaria, guests	X-arm	n	CE equipment demonstration	01:58

LHO General - Ops Day Shift Summary

ryan.short@ligo.org — Thu, 03 Oct 2024 16:30:22 -0700

Author: ryan.short@ligo.org

Report ID: 80452

TITLE: 10/03 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Busy today today, from multiple lock acquisitions to commissioning activities this morning. Unfortunately, not much observing time for H1 today, but's relocking now, currently up to MAX_POWER.

14:30 - H1 relocking
- 15:05 to 15:28 - Ran initial alignment
16:38 - Reached NLN (fully automatic relock), starting planned commissioning activities
- 17:57 - ISI HAM7 WD trip from activity near chamber
- 18:27 - Lockloss - alog80443
- 18:46 - HEPI HAM1 WD trip from activity on chamber
20:46 - Reached NLN, but SQZ needs work so waiting start observing
21:49 - Observing
22:19 - Lockloss - alog80453

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
14:47	FAC	Tyler, MM	All Buildings	n	Glycol samples	17:57
15:07	TCS	Camilla	LVEA	n	Getting parts	15:24
15:10	FAC	Karen	Opt/Vac Labs	n	Technical cleaning	15:37
15:35	ISC	Sheila	LVEA/Opt Lab	n	Gathering parts	15:46
15:47	SQZ	Sheila, Camilla	LVEA	Local	Moving OPO crystal	19:03
17:24	ISC	Elenna	Remote	n	Testing PRCL FF	18:22
17:58	FAC	Tyler, Richard, Trane	MY	n	Looking at chillers	19:21
18:26	CDS	Fil	CER	n	Taking pictures	18:31
18:44	CDS	Fil	FCES	n	Checking extension cords	18:52
18:44	VAC	Gerardo	LVEA	n	Replace pump supply on HAM1	19:05
20:07	SQZ	Sheila	LVEA	Local	Checking PD on SQZT7	20:36
20:59	SQZ	Sheila, Camilla	LVEA	Local	Fixing OPO alignment	21:51
21:58	PEM	Robert, guests	Y-arm	n	CE equipment demonstration	Ongoing
21:58	PEM	Anamaria, guests	X-arm	n	CE equipment demonstration	Ongoing

H1 General - Lockloss @ 22:19 UTC

ryan.short@ligo.org — Thu, 03 Oct 2024 15:55:20 -0700

Author: ryan.short@ligo.org

Report ID: 80453

Lockloss @ 22:19 UTC - link to lockloss tool

No obvious cause, but it looks like the IMC lost lock at the same time as the arms. However, I don't suspect the FSS in this case.

Lockloss

Images attached to this report

H1 SQZ - Translated OPO Crystal to new spot to Reduce Losses

camilla.compton@ligo.org — Thu, 03 Oct 2024 15:51:50 -0700

Author: camilla.compton@ligo.org

Report ID: 80451

Sheila, Camilla. WP 12116, 12117. Last done in October 2023: 73524.

Followed instructions from 73524, 65684, with additional notes below.

Took SQZT7 area to local laser hazard and plugged straight into the OPO_IR_PD for our red signal and the OPO_TRANS PD for our green signal. Trying to take the signals from the outside of the table or the SQZ racks was confusing.

Setup:

Old style function generator, offset 4.5V for a 1-9V scan at 10Hz.
Oscilloscope and long BNCs/adapters: plug into function generator, OPO_IR_PD and the OPO_TRANS photodetectors inside SQZT7.
PZT driver MDT694 which has 0-150V output for 0-10V input, connected this to the PZT1 connector in the back of the chassis, using the adapter for PZT2 (note this means that the PZT2 offset we had been keeping at +10V was 0V for this measurements, controlled by CLF SLOWOUTOFS 65535).
Wincam dell laptop and gray E-870 PI shift driver box (stored in LVEA SQZ cabinet) and the OPO crystal cable remains attached +X HAM7 flange.

What we did:

After set up once we could see both mode scans on the oscilloscope, we injected the seed beam and reduced green power from 30mW to 6mW to avoid pumping too much. Pico wasn't working: 80449.
Adjusted temperature to get red and green co-resonance. Plot attached of before spot move.
In alog 73524 we used the OPO spot 2nd from the left. We moved (32 x 50 steps to right, then 2 x 10 steps to right) to the next spot with a red-green co-resonance, 3rd from the left. Plot attached.
Increased the green power back to 25mW, then 30mW and then things got confusing: we were seeing rapidly changing strange signals and negatives on OPO_TRANS channel. Beckhoff version of the channels looked better. We eventually found that the whitening filters must have been saturating and giving us strange signals. We increased SHG ISS drivepoint to 10V, allowing us to use a lower green pump, this showed that the high green pump was our issues. Then reduced the SHG power to 14mW while the SHG ISS drivepoint was in the middle of the range at 5V. When the ISS was engaged, it could keep the opo_grTrans_setpiont_uW to 80uW with the controlmon around 6 and SHG_LAUNCH ~11.5mW. This is much less than the 30mW we needed this morning so this new crystal spot is much less lossy.
OPO started to oscillate when we locked it so we reduced the OPO gain from -4 to -8 and accepted in sdf.
Sheila set the opo_grTrans_setpiont_uW to 80uW in sqzparams.py and we measured the NLG to be 11 (Amplified / Un-amplified = 0.098/0.0089 see 76542).
Ran SCAN_SQZ_ALGNMENT and SCAN_SQZ_ANG. This gave us >4dB of squeezing at high frequency.
We left PZT2 (CLF SLOWOUTOFS) at 0V, see 80450.

Today, 75uW OPO trans power corresponded to 0.945 on the OPO refl diode, last night that was 4.161mW on OPO refl diode. Meaning after this spot move we now need to inject a lot less power into the OPO to get the same output power.

Images attached to this report

H1 SQZ - OPO PZT voltage changes squeezing

sheila.dwyer@ligo.org — Thu, 03 Oct 2024 15:06:07 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80450

Camilla and I ran SQZ_ALIGNMENT and SCAN_SQZ_ANG with the offset on PZT2 (we are using H1:SQZ-CLF_SERVO_SLOWOUTOFS) set to 0, while the nominal value is 10. We then went to no squeezing and set the offset back to it's nominal value, and saw reduced squeezing when we reinjected squeezing. We could recover the better squeezing level by slowly stepping this offset back to 0V. We think that this could be because the PZT setting changes the alignment of the OPO, and the squeezed beam coming out of it. (which also changes the squeezing angle).

A similar effect was seen with PZT1 in 80396 and 78529. It would be interesting another time to try changing this offset and seeing if we can recover squeezing by readjusting alignment and squeezing angle.

H1 General - Comment to Lockloss @ 18:27 UTC

ryan.short@ligo.org — Thu, 03 Oct 2024 14:55:30 -0700

Author: ryan.short@ligo.org

Report ID: 80448

H1 back to observing at 21:49 UTC. Recovery took a bit longer than usual due to a lockloss at TRANSITION_FROM_ETMX from a small seismic event (see screenshot from Jim) and SQZ optimization (see incoming alog from Sheila/Camilla).

Images attached to this report

H1 ISC - OPO pump power adjust half wave plate is not working

sheila.dwyer@ligo.org — Thu, 03 Oct 2024 14:55:12 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80449

The picomotor to adjust the OPO pump power is not working, H1:SYS-MOTION_C_PICO_I_MOTOR_2. When someone commands the waveplate to turn from medm, there is a clicking sound on the table that seems to come from the rotation stage, but it doesn't move.

We need to adjust this by hand for now if the ISS runs out of range (or alternatively, we can change the ISS set point).

FRS: 32288

H1 SQZ - Comment to OPO PZT voltage seems related to low range overnight

camilla.compton@ligo.org — Thu, 03 Oct 2024 14:50:13 -0700

Author: camilla.compton@ligo.org

Report ID: 80447

Reverted OPO checker back to 50-110V as we moved the OPO crystal spot.

LHO VE - Comment to HAM1(/HAM2) Annulus Ion Pump swap

gerardo.moreno@ligo.org — Thu, 03 Oct 2024 14:46:33 -0700

Author: gerardo.moreno@ligo.org

Report ID: 80446

Removed the Agilent IPC Mini controller that was temporarily installed on Tuesday, and replaced it with a positive (+) MiniVac controller. Attached is a trend of current load for both controllers, HAM1 and HAM2.

Note for the vacuum team, we still have the aux cart connected to HAM2 annulus ion pump isolation valve.

Images attached to this report

H1 General - Lockloss @ 18:27 UTC

ryan.short@ligo.org — Thu, 03 Oct 2024 11:55:36 -0700

Author: ryan.short@ligo.org

Report ID: 80443

Lockloss @ 18:27 UTC - link to lockloss tool

Happened at the end of commissioning time while PRCL NB injection was being run, although I don't suspect that as the cause. There was also work happening near HAM7 and the SQZ tables. Only thing in the trends I notice is some motion in ETMX L3 and DARM as the first action; hard to tell which happens first. No other obvious cause, including the FSS.

The FSS was very unhappy when trying to relock the IMC after this lockloss. I needed to toggle the autolocker a couple of times before the glitching calmed down enough to allow the IMC to lock.

Lockloss

Images attached to this report

H1 ISC - New PRCL Feedforward fit

elenna.capote@ligo.org — Thu, 03 Oct 2024 11:50:05 -0700

Author: elenna.capote@ligo.org

Report ID: 80445

After a failed test of the "correct" PRCL feedforward fit today (80444 and 80287), I tried again to fit a PRCL feedforward, this time using the good measurements Camilla took in 80444, using both the PRCL excitation and the correct PRCL preshaping.

There was some trial and error here, mainly due to the difficulty in matching the phase as well as the rising gain of the transfer function above 100 Hz, which you can see in this plot. This results in the best fit having some high Q pole just above 250 Hz, and of course the usual struggle to keep the gain low below 10 Hz. I found better results when I limited the gain between 1 and 10 Hz to a maximum of 0.5, and also reduced my fit range to go between 10 and 60 Hz, which is where the sensitivity improvement is required, and then limited the gain from 100-1000 Hz to 0.02. PRCL is limiting the noise up to 30 Hz, and far below th noise floor around 100 Hz, so it's probably ok to keep the PRCL noise the same or just slightly worse above 60 Hz (NB alog).

Finally, with Gabriele's help, I found a fit that worked! Here is the injection comparison with no feedforward and the new feedforward. I updated the DARM traces, so you can see that the PRCL contribution to DARM is slightly worse around 100 Hz, but much better up to 60 Hz, by up to a factor of 10.

The new filter is in FM7 (I have triple checked this!) and I have added it to the guardian and SDFed this in observe (screenshot).

I did some chopping of the PRCL FF to check the improvement in DARM, see plot. I think there is improvement between 20-30 Hz, but it's hard to tell.

I set out to rerun the noise budget injection of PRCL so we could remake the plots, but there was a lockloss while I was measuring (I think because people were on the floor?). I don't think the lockloss was from the NB injection.

Images attached to this report

H1 ISC - Comment to PRCL FF measurements taken as FM6 fit didn't reduce PRCL noise.

elenna.capote@ligo.org — Thu, 03 Oct 2024 11:32:40 -0700

Author: elenna.capote@ligo.org

Report ID: 80444

The "correct" filter today in FM7 was tested today and still didn't work. Possibly because I still didn't have the correct pre-shaping applied in this fit. I will refit using the nice measurement Camilla took in this alog.

LHO General - Comment to Ops Day Shift Start

ryan.short@ligo.org — Thu, 03 Oct 2024 10:09:21 -0700

Author: ryan.short@ligo.org

Report ID: 80442

H1 back to NLN at 16:38 UTC. Going straight into planned commissioning time.

LHO VE - Thu CP1 Fill

david.barker@ligo.org — Thu, 03 Oct 2024 08:50:31 -0700

Author: david.barker@ligo.org

Report ID: 80441

Thu Oct 03 08:09:57 2024 INFO: Fill completed in 9min 53secs

Jordan confirmed a good fill curbside.

It is getting colder outside, I've increased the trip temp from -110C to -100C.

Images attached to this report

LHO General - Comment to Ops Day Shift Start

ryan.short@ligo.org — Thu, 03 Oct 2024 08:12:19 -0700

Author: ryan.short@ligo.org

Report ID: 80440

Locklosses from last night:

08:31 UTC - only thing out of the ordinary I notice is motion mostly in the L2 stages of the QUADs about 150ms before the lockloss, see screenshot
14:18 UTC - nothing obvious; doesn't look like the FSS, no sign of glitches in DARM or ETMX either

Images attached to this report

LHO General - Ops Day Shift Start

ryan.short@ligo.org — Thu, 03 Oct 2024 07:35:56 -0700

Author: ryan.short@ligo.org

Report ID: 80439

TITLE: 10/03 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.30 μm/s
QUICK SUMMARY: H1 just lost lock about 15 minutes ago; will start looking into it shortly, although the cause may be from a recent earthquake out of Japan.

Wind is low, microseism trending down
All other systems nominal

H1 General - Wednesday Ops Eve Shift End

anthony.sanchez@ligo.org — Wed, 02 Oct 2024 22:07:50 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80438

TITLE: 10/03 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:

Another Lockloss @ 1:23 UTC

Relocking was rather difficult even after an Initial Alignment due to the IMC goining into fault because the FSS.
I eventually took ISC_LOCK to Down. and the PSL FSS to Down and the IMC to Down. and then requested Nominal_Low_Noise from ISC_LOCK. IDK it just seemed to work for me. your milage may vary.

Once the FSS decided to play ball, the rest of Locking went well enough.

Observing reached @ 3:25 UTC and with out any notable incidents .

The IFO has now been locked and Observing for 1 hour and 43 minutes.

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
22:04	TCS	Camilla	LVEA	N	Getting TCS parts near the Filtertube	22:25
22:26	PEM	Robert & Anna-Maria Lance	EX	N	PEM investigations	01:26

Lockloss

H1 DetChar - Comment to Scattered light at multiples of 11.6 Hz

adrian.helmling-cornell@ligo.org — Wed, 02 Oct 2024 17:47:59 -0700

Author: adrian.helmling-cornell@ligo.org

Report ID: 80437

I find that the noise bursts are temporally correlated with vibrational transients seen in H1:PEM-CS_ACC_IOT2_IMC_Y_DQ. Attached are some slides which show (1) scattered light noise in H1:GDS-CALIB_STRAIN_CLEAN from 1000-1400 on Septmeber 17, (2) and (3) the scattered light incidents compared to a timeseries of the accelerometer, and (4) a spectrogram of the accelerometer data.

DetChar

Non-image files attached to this report

imc_y_overlap.pdf

H1 General - Control room has Internet access again and an unrelated Lockloss

anthony.sanchez@ligo.org — Wed, 02 Oct 2024 16:29:41 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80436

TITLE: 10/02 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 21mph Gusts, 13mph 3min avg
    Primary useism: 0.08 μm/s
    Secondary useism: 0.45 μm/s
QUICK SUMMARY:

Sudden Lockloss @ 21:55 UTC very likley cause by a PSL FSS issue.

IMC Had a hard time relocking locking after the lockloss.

NLN Reached @ 22:54 UTC
Observing reached @ 22:56 UTC

Lockloss, PSL

Images attached to this report

H1 CDS - RO alarm early Tuesday morning.

david.barker@ligo.org — Wed, 02 Oct 2024 14:53:38 -0700

Author: david.barker@ligo.org

Report ID: 80435

The FMCS RO alarm, which has had several 1-minute alarms over the past few weeks after months of silent running, when into alarm at 05:09 Tue 01oct2024 for a duration of 2 hours and 47 mins, ending at 07:57.

Images attached to this report

H1 CDS - EY CNS-II GPS receiver IPPS non-nominal Mon and Tue mornings

david.barker@ligo.org — Wed, 02 Oct 2024 14:45:46 -0700

Author: david.barker@ligo.org

Report ID: 80434

Attached plot shows the time difference between the EY CNS-II independent GPS receiver and the timing system. For many months (since April) it has been steady at -250 +/- 50 nS.

Early Monday morning, 30sep2024 it flip-flopped between -250nS and -800nS from 05:55 to 06:42 PDT (48mins).

Then on Tuesday it did a similar thing, for 3 mins at 07:15 and for 9 mins at 07:46. The second period coincides with Erik working on the h1iscey replacement.

The EX CNS-II time difference has been steady throughout.

Images attached to this report

H1 General - Wednesday Ops Eve Shift Start

anthony.sanchez@ligo.org — Wed, 02 Oct 2024 13:48:47 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80433

TITLE: 10/02 Day Shift: 2030-0500 UTC (1330-2200 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
OUTGOING OPERATOR: Camilla
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 20mph Gusts, 11mph 3min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.41 μm/s
QUICK SUMMARY:
Taking over H1 for Eve Shift Early, for a full length OPS Shift.
Camilla did a great job as a substitute operator, glad to have her back in the Operator core again! She passed me a locked and Observing IFO!
2ndary useism is falling.

H1 General - OPS Day Shift End

camilla.compton@ligo.org — Wed, 02 Oct 2024 13:42:06 -0700

Author: camilla.compton@ligo.org

Report ID: 80432

TITLE: 10/02 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 151Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Short locks this shift but there is still some wind and microseism. We reduced input power to 60W from 61W.
LOG:

15:39UTC Observing with fully automatic relock
16:02UTC Lockloss, not caused by FSS/PSL 80423
17:03UTC Observing with fully automatic relock
18:24UTC - 18:26UTC Out of observing while the CO2Y laser relocked
19:07 UTC Lockloss 1411931265 with an ~11Hz wobble in DARM/LSC loops 80428
20:08UTC Observing with fully automatic relock
- IMC input power deceased to 60W from 61W from this lock 80430

All re-locks today and last night were fully automatic.

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
15:01	FAC	Karen	Optics lab/Vac Prep	N	Technical Cleaning	15:24
15:43	FAC	Karen	MY	N	Technical Cleaning	16:42
16:21	SQZ	Sheila	SQZT0	LOCAL	Realign SHG fiber	16:52
16:39	FAC	Chris	MX,MY	N	FAMIS tasks: fire and first aid kit checks	17:16
17:04	FAC	Karen	Woodshop/Fire pump room	N	Technical cleaning	17:53
19:00	PEM	Robert/Anamaria/Lance	X-arm	N	CE test setup, staying outside	Still out
19:57	SQZ	Sheila	LVEA	N	Grabbing parts	20:01

H1 TCS - Comment to HWS Masks Reinstalled and code restarted.

camilla.compton@ligo.org — Wed, 02 Oct 2024 12:59:04 -0700

Author: camilla.compton@ligo.org

Report ID: 80431

Noticed the ITMY HWS code had stopped, error attached. While we were out of observing today, I restarted it.

Images attached to this report

H1 ISC - IMC input power reduced from 61W back to 60W

camilla.compton@ligo.org — Wed, 02 Oct 2024 12:57:43 -0700

Author: camilla.compton@ligo.org

Report ID: 80430

Sheila and I reducded the IMC input power from 61W back to 60W. As we haven't been very stable today, it's possible this might help.

It was increased in 80295 in an attmept to avoid PIs. No IFO retuning was done with this setting This didn't help the PIs and the ETMY ring heater was increased in 80320 which successfully avoided the PI locklosses.

H1 DetChar - Comment to Scattered light at multiples of 11.6 Hz

jane.glanzer@ligo.org — Wed, 02 Oct 2024 12:33:56 -0700

Author: jane.glanzer@ligo.org

Report ID: 80429

I was able to run lasso on a narrower strain blrms (suggested by Gabriele) which made the noise more obvious. Specifically, I used a 21 Hz - 25 Hz blrms of auxiliary channels (CS/EX/EY HPI,ISI,PEM & SUS channels) to try and model a strain blrms of the same frequency via lasso. In the pdf attached, the first slide shows the fit from running lasso. The r^2 value was pretty low, but the lasso fit does pick up some peaks in the auxiliary channels that do line up with the strain noise. In the following slides, I made time series plots of the channels that lasso found to be contributing the most to the re-creation of the strain. The results are a bit hard to interpret though. There seems to be roughly 5 peaks in the aux channel blrms, but only 2 major ones in the strain blrms. The top contributing aux channels are also not really from one area, so I can't say that this narrowed down a potential location. However, two HAM8 channels were among the top contributors (H1:ISI_HAM8_BLND_GS_X/Y). It is hard to say if that is significant or not, since I am only looking at about an hours worth of data.

I did a rough check on the summary pages to see if this noise happened on more than one day, but at this moment I didn't find other days with this behavior. If I do come across it happening again (or if someone else notices it), I can run lasso again.

DetChar

Non-image files attached to this report

11hzscattershelf-lasso.pdf

H1 General - OPS Mid-shift Report

camilla.compton@ligo.org — Wed, 02 Oct 2024 12:17:41 -0700

Author: camilla.compton@ligo.org

Report ID: 80428

Just lost lock but were locked and observing with range around 150MPc for the last 2 hours.

Eric is watching the LVA temperature as it's changing a little.

15:39UTC Observing with fully automatic relock
16:02UTC Lockloss, not caused by FSS/PSL 80423
17:03UTC Observing with fully automatic relock
18:24 - 18:26UTC Out of observing while the CO2Y laser (which has been degrading) unlocked, tagging TCS
19:07 UTC Lockloss 1411931265 with an ~11Hz wobble in DARM/LSC loops beforehand, plot attached. Could this be related to 11.6Hz scattering that Gabriele/Jane looked at in 80165.

Lockloss, TCS

Images attached to this report

LHO VE - Comment to HAM1(/HAM2) Annulus Ion Pump swap

jon.feicht@ligo.org — Wed, 02 Oct 2024 10:57:54 -0700

Author: jon.feicht@ligo.org

Report ID: 80427

Diode pumps are typically faster than triode pumps including Starcell cathode types. Nice work!

H1 SQZ - OPO green losses increasing

sheila.dwyer@ligo.org — Wed, 02 Oct 2024 10:14:55 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80425

Following up on the need to decrease the OPO pump circulating power last night (80413), I went to SQZT0 to see if I could improve the pump fiber alignment. I was only able to get a small improvement by walking the steering mirrors into the pump fiber, and also a small decrease in the rejected polarization in HAM7 by walking the half wave plate and quarter wave plate in the pump fiber path.

The attached trend shows that since the OFI vent,the green power reflected from the OPO, in both polarizations, has been steadily increasing while the transmitted power has been constant, which means that the launched power has had to increase. This indicates that we should try to move the OPO crystal soon.

I'm tagging Detchar here because when I went to the table I realized this morning that the lights have been on in SQZT0 since last Tuesady, 80266, they are off now as of 17:00 UTC on October 2nd. Apologies, if there is any change in 60Hz or sidebands during this time.

DetChar

Images attached to this report

H1 General - Comment to LVEA has been Swept

camilla.compton@ligo.org — Wed, 02 Oct 2024 09:28:27 -0700

Author: camilla.compton@ligo.org

Report ID: 80424

Travis noticed that the paging system was buzzing in the offices this morning. At 16:25UTC we unplugged both the paging system and PSL phone that had been missed yesterday. Tagging DetChar in case that caused any excess noise in last night's locks.

DetChar

H1 General - Lockloss at 16:02UTC after 26 minutes in NLN

camilla.compton@ligo.org — Wed, 02 Oct 2024 09:14:26 -0700

Author: camilla.compton@ligo.org

Report ID: 80423

1411920195 Not sure why we lost lock. This was not a lcokloss related the the FSS glitching. 20mph wind and SEI config is in USEISM still.

Lockloss

LHO VE - Wed CP1 Fill

david.barker@ligo.org — Wed, 02 Oct 2024 08:55:18 -0700

Author: david.barker@ligo.org

Report ID: 80422

Wed Oct 02 08:08:28 2024 Fill completed in 8min 20secs

Jordan confirmed a good fill curbside.

Images attached to this report

H1 General - Comment to OPS Day Shift Start

camilla.compton@ligo.org — Wed, 02 Oct 2024 08:20:08 -0700

Author: camilla.compton@ligo.org

Report ID: 80419

Locklosses during the night:

1411882050 5:27UTC: After 54m in NLN. Lockloss of IMC at same time as IFO with FSS glitches beforehand.
1411900083 10:27UTC: after 4h6m in NLN. Normal Lockloss, cause unknown, tagged WINDY
1411911953 13:45UTC: after 1h42 in NLN. Lockloss of IMC at same time as IFO with FSS glitches beforehand.

H1 AOS - Hepi Pump Stations

mitchell.robinson@ligo.org — Wed, 02 Oct 2024 08:20:03 -0700

Author: mitchell.robinson@ligo.org

Report ID: 80421

EY trip level is @ 8-1/8 running at 8-1/4

EX trip level is @ 7 running at 7-3/16

Corner trip level is @ 5-5/16 running at 5-3/4

SEI, SYS

H1 AOS - Monthly Dust Monitor Vacuum Pump Check

mitchell.robinson@ligo.org — Wed, 02 Oct 2024 08:17:51 -0700

Author: mitchell.robinson@ligo.org

Report ID: 80420

Dust monitor pumps are running smoothly. End station pump 0108112950 had a seized bearing. I new bearing was installed and it is now back in rotation.

SYS

LHO FMCS - LVEA temperature trends

eric.otterman@ligo.org — Wed, 02 Oct 2024 08:13:33 -0700

Author: eric.otterman@ligo.org

Report ID: 80418

In the LVEA, the heating coils have had their first stages manually enabled. This will prevent unnecessary staging in and out of heating stages which would cause coupling into the IFO. This will require some additional monitoring of temps in the LVEA.

H1 General - OPS Day Shift Start

camilla.compton@ligo.org — Wed, 02 Oct 2024 08:07:18 -0700

Author: camilla.compton@ligo.org

Report ID: 80417

TITLE: 10/02 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 18mph Gusts, 11mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.45 μm/s
QUICK SUMMARY:

IFO is re-locking at OFFLOAD_DRMI_ASC after a lockloss from state 575 LASER_NOISE_SUPPRESION. I reverted owl operation so IFO_NOTIFY is now IDLE but took H1_MANAGER back to in in control by requesting INIT, LOW_NOISE.

LHO VE - Comment to HAM1(/HAM2) Annulus Ion Pump swap

gerardo.moreno@ligo.org — Wed, 02 Oct 2024 08:04:56 -0700

Author: gerardo.moreno@ligo.org

Report ID: 80416

While the ion pump was replaced we managed to trip the cold cathode giving us the signal for the vacuum pressure internal to HAM1, PT100B, found the CC off last night, but since the IFO was collecting data decided to wait until we were out lock, I turned the CC back on this morning. See trend data attached.

Images attached to this report

H1 General - Lockloss

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 22:08:23 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80415

TITLE: 10/02 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:
LOG:
The first lock after the Tuesday Maintenance was reached after the Vacuum team was finished and after an initial alignment was completed, NLN was reached at 02:49 UTC.

A SQZ issue prevented Observing before a Super event candidate was announced.

5 minutes after H1 got into OBSERVING a HAM6 Saturation and sudden Lockloss happened.

Unknown Lockloss https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/?event=1411875844

Relocking went well but there was another HAM6 saturation and Lockloss that happened wile relocking at Engage_ ASC_For_FULL_IFO.

NLN Reached again @ 5:02 UTC
Observing reached again at 5:04 UTC

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
22:22	PEM	Robert, Anamaria	Yarm	N	PEM inv	23:22
22:32	FAC	Betsy	LVEA	N	Parts grab	22:36
23:11	VAC	Janos	LVEA	N	Join team	01:07
00:00	PEM	Robert Anna-Maria	End Y	N	Setting up PEM tests	01:07
00:03	SEI	Jim	Remote	N	Testing Blend filters on SEI sys while watching the ALS PDs	02:03
01:08	PEM	Robert & Anna Maria	Alabama	N	Mag Field measurements	03:08
01:20	VAC	Janos	LVEA	N	Checking ION pump	03:20

Lockloss

Images attached to this report

H1 SQZ - Comment to what to do if the SQZ ISS saturates

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 20:53:45 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80414

Latest update on how to deal with this SQZ error message with a bit more clarity:
https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80413

H1 SQZ - SQZr OPO Pump Fiber issues

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 20:52:07 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80413

H1 had the ISS Pump issue that gives DAIG main the see alog 70050 message.

I started reading that alog chain again and then Super event candidate S241002e happened.

Vicky quickly jumped online to lend a hand and explain how she manages this particular issue.

"The problem is the pump fiber launched power > 35mW, which is set as the limit
So the OPO GRD was trying to lock the OPO, but this required too much fiber into the power, that guardians were bringing it down to protect the pump fiber from too much input power

so i backed off opo_grTrans_setpoint_uW = 75 (usually 80, this is found in sqzparams.py)

with lower opo transmitted power, less power is needed into the fiber, so things can lock again.

This required also re-tuning the OPO TEC setpoint (which is the SDF you have accepted), and re-ran SCAN_SQZANG to optimize squeezing with this lower squeezing level

probably the to-do for SQZ is re-optimize fiber coupling into the pump fiber. We need to fix this pump path anyways, so this fiber coupling should be re-optimized then if it can wait, and earlier if not

(also - i have been putting all the things into the LHO SQZ chat so the local SQZ ppl know what's up)"

Lockloss

Images attached to this report

H1 General - SDF Diffs

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 20:12:04 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80412

Current SDF Diffs that Are stopping us from reaching Observing.
But the SQZer is throughing the ISS Pump 70050 fit again.

Images attached to this report

LHO VE - HAM1(/HAM2) Annulus Ion Pump swap

janos.csizmazia@ligo.org — Tue, 01 Oct 2024 19:22:44 -0700

Author: janos.csizmazia@ligo.org

Report ID: 80411

Gerardo, Jordan, Travis, Janos Reacting to the issue in aLog https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80370, the HAM1 AIP was checked for controller and pump failures. After trying a couple of controllers, it was clear that the pump broke down. Shortly after the maintenance period, because of the high seismic activity, locking was impossible, so the vacuum team took the opportunity and swapped the pump (as normally it would have been impossible during the 4 hours of the maintenance period). The AIP was swapped with a noble diode pump - this was not exactly intentional, but turned out to be a happy accident, as it seemingly works much better than the Starcell or even the Galaxy pumps. However, as the noble diode pump has positive polarity, a positive polarity controller was needed: the only available piece is an Agilent IPC Mini (see it in the picture attached), which works well, but in the MEDM screen it appears to be faulty, due to its wiring differences. All in all, the HAM1/HAM2 twin-annulus system was pumped with the 2 AIPs and an Aux cart - Turbo pump bundle. The noble diode pump stabilized very nicely (at 5-7E-7 Torr, which is unusually low), so eventually the Aux cart Turbo pump bundle was switched off - at 6:55 pm PT. Since then, the 2 AIPs continue to decrease the annulus pressure, which is indeed very nice, so practically we are back to normal. In the meantime, Gerardo quickly modified an appropriate Varian controller to have positive polarity, so at the next opportunity the vacuum team will swap it with the Agilent controller, so the MEDM screen will also be normal. Note that the Aux cart - Turbo bundle remain there until this swap happens.

Images attached to this report

H1 General - LVEA has been Swept

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 17:30:22 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80410

LVEA has been Swept.
Ready to start locking now.

H1 PSL - Investigating FSS Glitching

jason.oberling@ligo.org — Tue, 01 Oct 2024 17:16:25 -0700

Author: jason.oberling@ligo.org

Report ID: 80409

J. Oberling, R. Short, M. Pirello, F. Clara, F. Mera

Summary: We're pretty much back where we started, not sure where the problem is but sure there is a problem somewhere.

Since mid-September there have been an increasing number of glitches in the FSS. These are seen in the FAST channel (signal to NPRO PZT), the PC channel (signal to phase-correcting EOM), and the TEMP channel (NPRO crystal operating temperature). In addition, these glitches are the suspected cause of many locklosses in the last couple of weeks and have delayed relocking due to these glitches causing FSS oscillations. In light of this we took a look at the FSS today.

At the start of maintenance we unlocked the IMC, leaving the FSS locked to only the Reference Cavity (RefCav). I tweaked up the alignment then went out on the floor with Fernando and Ryan to take a look at the FSS transfer function. I set up the Agilent network analyzer as normal, but the TF looked like garbage; I had to up the source power to 0 dBm (from our usual -20 dBm) to get a clear signal, and still the TF looked wrong. See first attachment. Seeing this, we filed a WP (12114) and pulled the TTFSS box from the PSL enclosure and took it to the EE shop.

The current TTFSS is old, and we were unable to find a test plan for it. With Marc, Fil, and Fernando we began stepping through the circuit diagram, testing each component to make sure it was functioning as expected from the diagram (for example: "The gain should be x, is it? No, but we might be injecting too high a frequency, see the filter in the feedback? Lower the frequency, now is the gain OK? Yes."). This was somewhat time consuming, but we could find no single component that was clearly bad or not operating properly. Visually everything looked ok, nothing was obviously blown or damaged. Marc did clean some excess flux from some of the solder pads. We then checked the LO and everything looked OK there as well; signal amplitude might be a little high but Fil didn't see anything worrisome. Not knowing what else to do, I reinstalled the TTFSS box.

Once the box was installed I took a TF, this time from inside the enclosure using the Agilent unit we keep in there. The TF looked just fine and as expected, see 2nd attachment. With a common gain of 15 and a fast gain of 9 the FSS has a UGF of 452 kHz with 65° of phase margin; the peaks around 770 kHz are still present like normal. We decided to check the crossover (where the NPRO PZT and the phase-correcting EOM meet) at ~20 kHz (this is set with the fast gain). The 3rd attachment shows the crossover as found, with a fast gain of 9. We tried raising the fast gain, but this made the crossover peak larger. Lowering the fast gain made the peak smaller but also starts to raise the overall signal (see 4th and 5th attachments, with a fast gain of 7 and 6, respectively). We decided to leave the fast gain at 7 for now, will see how things behave (in the 3 hours since we made this change and the time of writing this alog behavior seems unchanged). The picture with the fast gain at 7 does looke a little worse than the intial one with fast gain at 9; not sure why, we went back and forth between them a couple times and 9 looked worse than 7 each time (maybe I got "lucky" with the camera shot?). This done we transitioned the enclosure back to Science Mode.

Before leaving the LVEA we tried one more thing. Since we had a successful TF measurement inside the enclosure, we hooked up the Agilent unit by the PSL/ISC racks again and took a TF (since I had an apparent junk measurement with this same unit earlier in the day, see that 1st attachment again). The TF looked perfectly fine, matched the measurement done inside the enclosure. Not sure where the garbage TF from this morning came from, at this point I can only call it "user error of unknown origin."

So we've ended where we started, sure there's a problem but not sure where it is. The current TTFSS appears to be operating correctly, but the FAST signal is still glitching; we even saw glitching with the IMC unlocked, although Ryan reports that it "seems" like the glitching is more frequent when the IMC is locked (maybe IFO feedback is exacerbating an existing issue...). Marc and Fil have been testing a newer gen of TTFSS (not the same as used in SQZ, as that one is not compatible with the PSL as currently wired), so once that is qualified we will try switching to it (Peter King had it working with the RefCav in the optics lab, so it should work with the PSL). We'll try that next.

Images attached to this report

H1 General - Tuesday Eve Shift Start

anthony.sanchez@ligo.org — Tue, 01 Oct 2024 16:45:23 -0700

Author: anthony.sanchez@ligo.org

Report ID: 80407

TITLE: 10/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 21mph Gusts, 15mph 3min avg
    Primary useism: 0.08 μm/s
    Secondary useism: 0.81 μm/s
QUICK SUMMARY:
Secondary Micro Seism is elevated,
The Vacuum team is still working on an ION pump annulus swap out on the floor of the LVEA.
Locking attempts will start once the VAC team is done and a sweep of the LVEA has been completed.

Images attached to this report

H1 PSL - PSL Cooling Water pH Test

ryan.short@ligo.org — Tue, 01 Oct 2024 16:42:15 -0700

Author: ryan.short@ligo.org

Report ID: 80408

FAMIS 21312

pH of PSL chiller water was measured to be just above 10.0 according to the color of the test strip.

H1 General - OPS Tuesday day shift summary

ryan.crouch@ligo.org — Tue, 01 Oct 2024 16:31:32 -0700

Author: ryan.crouch@ligo.org

Report ID: 80402

TITLE: 10/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Maintenance ran a little over again from the TTFSS investigation. The ground is moving today, elevated microseism alog80392 and a 6.6 from Tonga tripped some ISI WDs. The DAQ was not restarted. The LVEA is now is laser SAFE.
LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
23:58	SAF	H1	LVEA	YES	LVEA is laser HAZARD	15:39
14:33	CDS	Erik	EY	n	Swap ISC chassis	16:32
15:00	SYS	Betsy	LVEA	yes	Part hunt	15:05
15:01	FAC	Karen, Kim, Nellie	FCES	n	Tech clean	16:10
15:18	FAC	Eric	CS	n	HVAC heater testing	16:43
15:18	CDS	Fil	EY	n	Helping with ISCEY FE	15:22
15:21	VAC	Janos, Jordan, Travis	LVEA	n	HAM1 AIP troubleshooting	16:32
15:21	SAF	Ryan C	LVEA	-	Transitioning LVEA to laser safe	15:40
15:25	FAC	Chris	Mids	n	Potty transport	17:27
15:25	CDS	Fil	CER, LVEA	n	Check UPSs	16:19
15:40	PSL	Jason, Ryan S	LVEA	n	FSS TFs	21:21
15:41	SYS	Richard	EY	n	Check on things	17:23
15:49	ALS	Keita	EX,EY	n	ALS troubleshooting	19:36
16:04	FAC	Chris	site	n	Pest control escort	17:27
16:08	SYS	Mitchell	LVEA	n	Parts hunt	16:17
16:10	FAC	Karen	EY	n	Tech clean	17:09
16:10	FAC	Kim, Nellie	EX	n	Tech clean	17:45
16:20	CDS	Fil	Ends	n	Checking UPSs	16:47
17:02	VAC	Travis	LVEA	n	Parts hunt	17:05
17:23	VAC	Gerardo, Jordan	LVEA	n	HAM1 pump cart	18:19
17:42	SYS	Richard	EX	n	Checking on things	18:30
17:45	SYS	Mitchell	site	n	FAMIS tasks	19:03
17:46	FAC	Kim, Karen	LVEA	n	Tech clean	18:55
17:49	VAC	Janos, VAT	LVEA	n	Tour	17:49
18:00	FAC	Chris	LVEA	n	FAMIS tasks	18:21
18:05	VAC	Janos	LVEa	n	Checks	18:19
18:12	CDS	Erik	EndX	N	Restart CDS laptops	18:36
18:22	FAC	Chris	Ends	N	Checks	18:57
19:29	VAC	Travis	FCES	N	Clean area, prep for next weeks installs	20:07
19:44	VAC	Gerardo	LVEA	N	ION pump HAM1	19:57
21:13	SEI	Jim	LVEA	N	Move masses from receiving to LVEA	21:30
21:30	VAC	Gerardo, Jordan	LVEA	N	Pump swap annulus ion, Janos joined at 23:00	Ongoing
21:54	CAL	Tony, Dripta	PCAL lab	Y	PCAL work	23:03
22:22	PEM	Robert, Anamaria	Yarm	N	PEM inv	23:30

Some of the work that was completed is as follows:

Laser Safe transition
ALS investigation cont. at both ends
EE/CDS UPS checks
TTFSS investigation
ISC_EY front end replaced alog80395
Reheat coil checks alog80401
HAM1 ION pump investigation/swap

A 6.6 from Tonga rolled through around 20:20UTC, it started tripping watchdogs when the R wave came through (peaked at just over 10 on NUC10)

20:49 UTC ISI BS stage 2, ITMY stage 1 & 2 watchdogs tripped

21:23 ISI HAM7 wd trip, maybe from Jim moving stuff arond the LVEA? Verbal called out a glitch beforehand (all the cps sensor saw it)

DIAG_MAIN message was flashing occasionally - TIDAL LIMITS: X_ARM_CTRL_OUTPUT within 10 percent of limit

Images attached to this report

H1 CDS - Comment to CDS Maintenance Summary: Tuesday 1st October 2024

david.barker@ligo.org — Tue, 01 Oct 2024 13:22:49 -0700

Author: david.barker@ligo.org

Report ID: 80405

Tue01Oct2024
LOC TIME HOSTNAME MODEL/REBOOT
08:23:11 h1iscey ***REBOOT***
08:24:51 h1iscey h1iopiscey
08:25:04 h1iscey h1pemey
08:25:17 h1iscey h1iscey
08:25:30 h1iscey h1caley
08:25:43 h1iscey h1alsey

H1 CDS - CDS Maintenance Summary: Tuesday 1st October 2024

david.barker@ligo.org — Tue, 01 Oct 2024 13:21:36 -0700

Author: david.barker@ligo.org

Report ID: 80404

WP12099 h1iscey computer swap

Erik:

Recenly we discovered that h1iscey (W2245) has a bad PCIe slot-7 on its motherboard, which is the cause of the A2 Adnaco issue in its IO Chassis. We have been skipping this slot in the past weeks.

h1iscey's front end computer was swapped with one from the test stand. See Erik's alog for details.

No model changes were required, no DAQ restart.

WP12108 laptop upgrade

Erik:

End station CDS laptops were upgraded.

Alarms reconfiguration

Dave:

The FMCS reverse osmosis (RO) has become very stable. The alarm settings were changed to alarm after 1 hour (was set to 1 day).

New CDS Overview

Dave:

New overview was released, see alog for details.

H1 CDS - New CDS Overview

david.barker@ligo.org — Tue, 01 Oct 2024 13:12:36 -0700

Author: david.barker@ligo.org

Report ID: 80403

I have release a new CDS Overview, image is attached.

The previous overview was a hybrid of computer generated and hand drawn content. Specifically the upper 80% (the FE and DAQ section) was computer generated and the lower 20% was a mix of external files and hand drawn.

The new overview is completely genenerated by python code (generate_cds_overview_medm.py). This is reflected in its name change from H1CDS_APLUS_O4_OVERVIEW_CUST.adl to H1CDS-CDS_OVERVIEW_MACHINE_GEN.adl.

To open the new CDS overview, you need to kill all existing MEDMs and restart the sitemap from scratch, otherwise you will see a strange overview-within-an-overview screen.

New features:

Lower area has better layout, rows and columns align.

New IFO range "7 segment LED" section, hopefully range can be more easily read from afar. Currently it has a static orange-on-black color scheme, later version will turn green when in observe.

Color standardisation: related display buttons are light-blue on navy, shell execution buttons are light-green on dark-green.

Most areas can be clicked to open related displays.

To Do:

Complete the slow-controls and FMCS areas

Images attached to this report

LHO FMCS - LVEA temperature trends

eric.otterman@ligo.org — Tue, 01 Oct 2024 12:49:16 -0700

Author: eric.otterman@ligo.org

Report ID: 80401

The LVEA temperature trends will stabilize throughout the day today. The excursions are a result of the work I did this morning to the zone reheats.

H1 AOS - Comment to Disturbance degrading Crab pulsar sensitivity

keith.riles@ligo.org — Tue, 01 Oct 2024 12:31:49 -0700

Author: keith.riles@ligo.org

Report ID: 80400

Correction: The graph labeled August 1 really applies to July 12, the last day of data before the long shutdown. Attached is what I should have posted instead (same curves with the correct label). Thanks to Sheila for spotting the error.

Images attached to this report

H1 General - OPS Tuesday day shift update

ryan.crouch@ligo.org — Tue, 01 Oct 2024 12:31:16 -0700

Author: ryan.crouch@ligo.org

Report ID: 80399

The TTFSS investigation is still ongoing, microseism has greatly risen to above the 90th percentile, the wind is also rising but its only ~20 mph.

H1 General - Alog, awiki, svn downtime due to VM host issues in GC

nyath.maxwell@ligo.org — Tue, 01 Oct 2024 12:22:30 -0700

Author: nyath.maxwell@ligo.org

Report ID: 80398

There was an issue today where the VM hypervisor running alog, svn, awiki, ldap, and some services lost its network. It has been restored.

H1 PEM - High Microseism today

ryan.crouch@ligo.org — Tue, 01 Oct 2024 10:41:53 -0700

Author: ryan.crouch@ligo.org

Report ID: 80392

The microseism today has reached fully above the 90th percentile, recreating Roberts plot from alog74510 the seismometers seem to show the largest phase difference is between EX and the CS, and the 2nd highest is with EY which suggests its because of the motion from our coast? From windy.com there's currently a 10 meter wave low pressure system off the coast of WA that's pretty much along the axis of the Xarm. These seismometers are also dominated by a ~0.12 Hz oscillation.

Images attached to this report

H1 SQZ - OPO PZT voltage seems related to low range overnight

sheila.dwyer@ligo.org — Tue, 01 Oct 2024 10:41:38 -0700

Author: sheila.dwyer@ligo.org

Report ID: 80396

Yesterday afternoon until 2 am, we had low range because the squeezing angle was not well tuned. As Naoki has noted 78529 this can happen when the OPO PZT is at a lower voltage than we normally operate at. This probably could have been improved by running SCAN_SQZANG.

I've edited the OPO_PZT_OK checker, so that it requires the OPO PZT to be between 70 and 110 V (it used to be 50 to 110V). This might mean that sometimes the OPO has difficulty locking, (ie, 76642), which will cause the IFO to call for help, but that will avoid running with low range when it needs to run SCAN_SQZANG.

Images attached to this report

H1 AOS - Monthly wind fence inspection FAMIS Request ID:21389

jim.warner@ligo.org — Tue, 01 Oct 2024 10:28:52 -0700

Author: jim.warner@ligo.org

Report ID: 80397

No new damage noted. First pic is EX, second is EY.

Images attached to this report

H1 CDS - h1iscey frontend replaced

erik.vonreis@ligo.org — Tue, 01 Oct 2024 10:02:33 -0700

Author: erik.vonreis@ligo.org

Report ID: 80395

h1iscey frontend server was replaced because of a possible bad PCI slot that was preventing connection to one of the Adnaco PCIe expansion boards in the IO Chassis , see here: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80035

The new frontend is running without issue, connected to all four Adnacos.

The new frontend model is Supermicro X11SRL-F, the same as the old frontend.

ISC

H1 AOS - Comment to Dominant Axes During EQ Lockloss

neil.doerksen@ligo.org — Tue, 01 Oct 2024 09:31:11 -0700

Author: neil.doerksen@ligo.org

Report ID: 80394

NOTE : All units are in mHz, not Hz.

H1 CDS - Comment to VACSTAT detected BSC3 glitch at 02:13:44 PDT Tue 01 Oct 2024

david.barker@ligo.org — Tue, 01 Oct 2024 09:22:56 -0700

Author: david.barker@ligo.org

Report ID: 80393

This is the second false-positive VACSTAT PT132 glitch detected.

02:13 Tue 01 Oct 2024

02:21 Sun 01 Sep 2024

alog for 01sep glitch

H1 CDS - Comment to VACSTAT detected BSC3 glitch at 02:13:44 PDT Tue 01 Oct 2024

david.barker@ligo.org — Tue, 01 Oct 2024 09:06:07 -0700

Author: david.barker@ligo.org

Report ID: 80391

vacstat_ioc.service was restarted on cdsioc0 at 09:04 to clear the latched event.

LHO VE - Tue CP1 Fill

david.barker@ligo.org — Tue, 01 Oct 2024 08:46:43 -0700

Author: david.barker@ligo.org

Report ID: 80390

Tue Oct 01 08:09:24 2024 INFO: Fill completed in 9min 20secs

Images attached to this report

H1 CDS - VACSTAT detected BSC3 glitch at 02:13:44 PDT Tue 01 Oct 2024

david.barker@ligo.org — Tue, 01 Oct 2024 08:43:09 -0700

Author: david.barker@ligo.org

Report ID: 80389

VACSTAT issued alarms for a BSC vacuum glitch at 02:13 this morning. Attachment shows main VACSTAT MEDM, the latch plots for BSC3, and a 24 hour trend of BSC2 and BSC3.

The glitch is a square wave, 3 second wide. Vacuum goes up from 5.3e-08 to 7.5e-08 Torr for these 3 seconds. Neighbouring BSC2 shows no glitch in the trend.

Looks like a PT132_MOD2 sensor glitch.

Images attached to this report

H1 General - The 2 overnight lock losses

thomas.shaffer@ligo.org — Tue, 01 Oct 2024 08:23:18 -0700

Author: thomas.shaffer@ligo.org

Report ID: 80388

1411809803

The FSS glitching isn't seen in this lock that ended a 11 hour lock, but our old friend the DARM wiggle reared its head again. (Attachment 1)

1411824447

Useism came up fast, so many of the signals are moving a bit more, but DARM sees a 400ms ringup that I don't see other places. Again, the FSS didn't seem to be glitching at this time.

Lockloss

Images attached to this report

LHO General - Ops Day Shift Start

thomas.shaffer@ligo.org — Tue, 01 Oct 2024 07:33:36 -0700

Author: thomas.shaffer@ligo.org

Report ID: 80387

TITLE: 10/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive maintenance
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 2mph Gusts, 1mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.73 μm/s
QUICK SUMMARY: The IFO had just lost lock at low noise coil drivers as I arrived. I put it into IDLE and maintenance is already starting. Useism has grown to over 90th percentile, perhaps the cause of the lock loss, but I still need to look into this.

H1 CDS - Workstations and Displays updated

erik.vonreis@ligo.org — Tue, 01 Oct 2024 07:19:23 -0700

Author: erik.vonreis@ligo.org

Report ID: 80386

Workstations anhd wall displays were updated and rebooted. This was an OS packages update. Conda packages were not updated.

H1 General - Ops Eve Shift End

oli.patane@ligo.org — Mon, 30 Sep 2024 22:01:48 -0700

Author: oli.patane@ligo.org

Report ID: 80385

TITLE: 10/01 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 137Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Observing at 140Mpc and have been locked for 7 hours. Range is still low unfortunately but it's been a quiet evening, but we did get another superevent!
LOG:

23:00 Observing and have been Locked for 1 hour

23:47 Superevent S240930du

H1 General - Comment to Lockloss

oli.patane@ligo.org — Mon, 30 Sep 2024 21:16:35 -0700

Author: oli.patane@ligo.org

Report ID: 80384

After comparing Ryan's channels to darm, still not sure whether this lockloss was caused by something in the PSL or not, see attached

Images attached to this report

H1 General - Ops EVE Midshift Status

oli.patane@ligo.org — Mon, 30 Sep 2024 20:05:47 -0700

Author: oli.patane@ligo.org

Report ID: 80383

We've been Observing since before the start of my shift and we have been Locked for 5 hours. Our range hasn't gotten better and I haven't had a chance to tune up the squeezing. Squeezing is pretty bad with both the 350Hz and the 1.7kHz bands being around -1.2, with the lowest they got to being ~-1.5 a couple of hours into the lock. Besides the abysmal range, everything is going well.

H1 DetChar - DQ Shift LHO 16 Sept- 22 Sept 2024

yashasvininad.moon@ligo.org — Mon, 30 Sep 2024 18:47:44 -0700

Author: yashasvininad.moon@ligo.org

Report ID: 80382

1. The average duty cycle for Hanford for this week was 69.25%, with a high of 95.6% on Friday 2. The BNS range fluctuated between 150-160 Mpc, the lower end 150 Mpc is due to high winds 3. Strain lines in h(t): Some of the strain lines especially lower frequency can be explained due to ground motion Noise lines in h(t) spectrogram every day at 500Hz most of them can be correlated to after H1 gets locked back, but some of these persist. I have attached a plot highlighting it 4. Some glitch clusters happen right before losing lock and can be explained by comparing to alogs, others (the one tuesday) are unexplained 5. Lockloss: Some locklosses can be explained due to increased ground motion (eg: monday, wednesday and friday locklosses) First FSS_OSCILLATION lockloss from NLN in a year on wednesday 18th Sept Another lockloss that tagged FSS on Thursday Lockloss with FSS oscillation tag on Saturday 6. PEM tab: Most of the noise in corner BSCs happens when H1 is not observing Noise in acoustics can be related to environmental factors like wind Recurring noise line in BSC1 motion X and sometimes other BSCs too at ~11 Hz every day starting at 15:00 UTC 7. H1:ASC-DHARD_Y_OUT_DQ and H1:PEM-EX_EFM_BSC9_ETMX_Y_OUT_DQ are present multiple times in the hveto tab, there are also some new channels. 8. The fscan plots have appeared and the line count varies from 600 to ~850 with an average of 684. DetChar

Images attached to this report

H1 AOS - Ops Day Shift Summary

ryan.short@ligo.org — Mon, 30 Sep 2024 16:53:50 -0700

Author: ryan.short@ligo.org

Report ID: 80380

TITLE: 09/30 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 137Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Planned commissioning time this morning, then a lockloss early afternoon with a simple relocking process afterwards made for a relatively light day.

14:30 - H1 locked and observing for 4 hours
15:35 - Dropped observing for planned commissioning time
18:37 - Back to observing
20:26 - Lockloss - alog80376
22:04 - Back to observing

H1 has now been locked and observing for 1.5 hours.

LOG:

Start Time	System	Name	Location	Lazer_Haz	Task	Time End
23:58	SAF	H1	LVEA	YES	LVEA is laser HAZARD	Ongoing
16:45	CAL	Tony, Jackie	PCal Lab	local	Measuring	17:26
17:20	FAC	Kim	MX	n	Technical cleaning	18:27
17:32	PEM	Robert	LVEA	-	Shaker tests	18:32

H1 General - Ops Eve Shift End

oli.patane@ligo.org — Mon, 30 Sep 2024 16:29:03 -0700

Author: oli.patane@ligo.org

Report ID: 80381

TITLE: 09/30 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 139Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 8mph Gusts, 3mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.17 μm/s
QUICK SUMMARY:

Observing at 140 Mpc and have been Locked for 1.5 hours. Might drop out of Observing to run sqz align if Livingston loses lock or also drops out.

H1 General - Comment to Lockloss @ 20:26 UTC

ryan.short@ligo.org — Mon, 30 Sep 2024 15:04:53 -0700

Author: ryan.short@ligo.org

Report ID: 80379

H1 back to observing at 22:04 UTC. I needed to adjust SRM slightly to lock DRMI, but otherwise a fully automated relock.

LHO General - OSB - Lightning Rod Repaired

filiberto.clara@ligo.org — Mon, 30 Sep 2024 14:29:09 -0700

Author: filiberto.clara@ligo.org

Report ID: 80378

WP 12095

Damaged lightning rod and mounting bracket on the OSB viewing platform replaced.

Images attached to this report

H1 General - Lockloss @ 20:26 UTC

ryan.short@ligo.org — Mon, 30 Sep 2024 14:20:05 -0700

Author: ryan.short@ligo.org

Report ID: 80376

Lockloss @ 20:26 UTC - link to lockloss tool

This would appear to be another FSS-related lockloss, as evidenced by the fact that the IMC and arms lost lock at the same time, we see some glitches in the FSS fast channel, and nothing else jumps out to me for another cause.

Lockloss

Images attached to this report

H1 ISC - Comment to PRCL FF measurements taken as FM6 fit didn't reduce PRCL noise.

camilla.compton@ligo.org — Mon, 30 Sep 2024 13:50:05 -0700

Author: camilla.compton@ligo.org

Report ID: 80377

Elenna pointed out that I tested the wrong filter, the new one is actual FM7, labeled "new0926". We can test that on Thursday.