TITLE: 12/26 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: We are Observing and have now been Locked for 14.5 hours.

Very quiet shift, with the only thing happening was that ITMY Mode 20 (aka narrower ITMY Mode 6) had started ringing back up slowly. It seems like during the first two hours that we had been locked, the ITMY 5 gain setting had helped ITMY20 settle down to around 4.06, and then over the next four hours ITMY20 continued decreasing at a lower rate of change from 4.06 -> 3.99. However, after this, ITMY20 started slowly ringing back up, and 4.5hours later was back to being above 4.06. During all of this, ITMY 5, 6, and 10 were still decreasing. I decided to try turning the ITMY5 gain to 0 to see what that would do, but that caused mode 5 to immediately start rising at a much faster rate than mode 20 had been before, so I turned the gain back on and they've all been decreasing again the past 3.5 hours.

LOG:

00:00 Detector Observing and Locked for 6.5hours

Observing at 155Mpc and have been Locked for 10.5 hours. Nothing to report.

TITLE: 12/26 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.85 μm/s
QUICK SUMMARY:

We are Observing and detector has been Locked for 6.5 hours.

TITLE: 12/25 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: We stayed locked for most of the shift, 1 lockloss. Locked and observing for ~6:30 as of 00:00UTC

16:41UTC Lockloss after only 36 minutes, using 'guardctrl log -a "12/25/2023 16:38 UTC" -b "12/25/2023 16:42 UTC" DIAG_SDF' it seems the SQZer lost lock first. Automated relock

Xarm has been locking at higher power than usual, ~1.2

I also set ITMX mode 12s gain and max gain to 0 in lscparams as its been ringing up the past few locks and reloaded ISC_LOCK and VIOLIN_DAMPING.

I did a quick walkthrough of the OSB, Staging building, LSB, and LExC and saw nothing of note.

Mon Dec 25 10:06:01 2023 ALERT: Fill done (errors) in 5min 58sec

TCs started high (31C/34C) so I increased the trip temps before today's fill from -70C to -60C. Despite this, Gerardo had to cancel the fill after it started overflowing, TCmins were -51.5C/-46.5C.

https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1387557678, only 36 minutes into the lock

TITLE: 12/25 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 2mph Gusts, 1mph 5min avg
    Primary useism: 0.07 μm/s
    Secondary useism: 0.86 μm/s
QUICK SUMMARY:

• Relocking, at TRANSITION_FROM_ETMX. Lockloss at 14:23
• Microseism is still rising, low wind

TITLE: 12/25 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 146Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY: We are Observing and have been Locked for 10 minutes. The lockloss recovery required an Initial Alignment, and while trying to acquire MICH, it was having trouble registering that it was over the threshold because one of the beams was slightly higher than the other, so I needed to adjust the beamsplitter. After that the rest of initial alignment and locking went smoothly.
LOG:

00:00 Detector Observing and Locked for 3.25 hours

05:30 Lockloss (75026)
-- Relocking --
06:03 I took the detector to DOWN because we kept running through CHECK_MICH_FRINGES and needed to run an Initial Alignment
06:08 Started Initial Alignment
    - Detector was having trouble with aligning MICH due to the beams being slightly offset in pitch and thus being too low for the trigger - I had to adjust the BS in pitch quite a bit for it to finally catch
07:06 Initial Alignment complete

07:49 Reached NOMINAL_LOW_NOISE
--Relocking End --

07:52 Into Observing

Full DQ shift report is here.

• Duty cycle: 76.82%, 64.28%, 67.31%, 71.99%, 79.41%, 97.90% and 51.50%. Week average: 72.7%
• BNS range: from 150~163 Mpc. Most time is around 155~160 Mpc. Some lockloss due to commisioning and some are due to earthquakes.
• Fscan-observing: line counts are most from 500-600. Stays between mean and mean + stddev, except this Sunday 2023-12-24 the line count is around 480 below the mean value.
• Hveto:
  • Usually only 1-3 winners appears everyday in this week. But on Wednesday 2023-12-20 there are 14 winners.
  • The most common winner is H1:PEM-EX_EFM_BSC9_ETMX_Y_OUT_DQ which appeared 3 times in this week.
• PyCBC:
  • There are 6 events with new SNR>10 for PyCBC live medium.
  • There are 28 events with new SNR>10 for PyCBC live short.
  • Highest new SNR is 18.099 on Monday with GPS time 1386949653.387.

Lockloss @ 12/25 05:30UTC

Detector is Observing at 155Mpc and has been Locked for 7 hours now. Nothing to report.

TITLE: 12/25 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 6mph Gusts, 3mph 5min avg
    Primary useism: 0.08 μm/s
    Secondary useism: 0.61 μm/s
QUICK SUMMARY:

Detector Observing and Locked for 3 hours. Microseism is high but everything is looking good currently.

The IFO was relocking from a recent LL when I arrived (15:15UTC) which looked to have been caused by some sudden local ground motion. Anthropogentic tag with over the threshold z-direction ground motion.

At 17:43 I went out to the VPW to power cycle thermostats again

While relocking I had lots of higher state locklosses, Lockloss at LOWNOISE_COIL_DRIVERS, TRANSITION_FROM_ETMX, MAX_POWER. After the MAX_POWER lockloss the violins looked very rung up on DARM. HWS codes stopped for ITMY reports DIAG_MAIN tagging TCS

• 16:47 LOW_NOISE_COIL_DRIVER lockloss
• 17:29UTC TRANSITION_FROM_ETMX lockloss
• 18:29UTC MAX_POWER lockloss
• 19:19 LOW_NOISE_COIL_DRIVER lockloss

20:47 back into Observing after slowly stepping through the higher states starting with MAX_POWER, out of Observing at 22:24 for Naoki to adjust the SQZer, back into Observing at 22:36UTC

ITMX mode12 was ringing up under nominal settings again so I used FM1+FM6+FM10 G=+1 to damp it

In the observing starting from Dec 24 20:47:52 UTC, the ADF servo seems to bring the squeezing to the wrong place, which caused huge BNS range drop. I asked the operator to go to commissioning and turned off ADF servo. I found that when squeezing angle is optimal, the error signal of ADF servo is not around 0 so I changed the ADF demod phase from 91 to 97 to make the error signal close to 0. Then I turned on ADF servo, accepted one SDF as shown in the attachment, and asked the operator to go to observing.

Relocking has been a struggle, high state locklosses, LOW_NOISE_COIL_DRIVERS, TRANSITION_FROM_ETMX, MAX_POWER.... Currently at 25W

DIAG_MAIN reports that the HWS ITMY code has stopped, violin modes were rung up during a MAX_POWER lockloss and have been giving me trouble since. I've also been getting lots of IY saturations during higher states (MOVE_SPOTS, DARM_TO_DC_READOUT, ...)