At 22:00UTC  I ran the MICH and SRCL FF measurements (see /lsc/h1/scripts/feedforward/README.txt) after the IFO had been locked 4 hours. The MICH comparism plot showed that the MICHFF has degraded with cold OM2 74861, some of this may be as the IFO was still thermalizing.

Gabirele fit the SRCL measurements. At 23:33UTC I loaded Gabirele's new SRCLFF (in FM7). I fit and saved the new MICHFF in FM4 .

After we lost lock 74874, I turned on both of these at 00:45UTC, saved/loaded in ISC_LOCK and Austin accepted in sdf snap and observe.snap. MICH comapre plot is greatly improved, note that as we are ~ 10 minutes into the lock that there is more noise.

The DARM FOM on the wall has looked a little peak-y today, indicating that perhaps we've got some excess jitter coupling as a result of having changed OM2's thermal state this morning. 

I used a time after the IFO had been locked for 3.5 hours, and retrained the Jitter noise subtraction.  I then set it in the NOISE_CLEAN guardian to come on in Observe.  Since we lost lock and relocked, I've now watched this come on successfully.  I also accepted the updated Jitter subtraction coefficients, as well as the JITTER_SUM_GAIN being 1, so that it is on and engaged in Observing. 

In the attached plot, you can see that the laser noise subtraction that has been on for several months now is still doing well (green traces), and that the jitter noise (yellow) does a good job of removing many of these peaks. 

TITLE: 12/18 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Austin
SHIFT SUMMARY:

IFO is LOCKING and at CARM_TO_ANALOG

16:09 UTC - Lockloss from NLN - alog 74864

16:48 UTC - Lockloss at Max_Power - due to 6.0 EQ in China

1. Staying down after 3rd ALS/IR lockloss due to EQ microseism - it doesn’t look terrible so will try again in 15 minutes.
2. Resumed at 17:14 UTC

17:00(ish) UTC - Power cycled Nuc35 due to the screen crashing and not responding.

17:12 UTC - Fire alarm panel went off. Tyler called a few seconds after saying it was a false alarm/to be expected due to work he was doing. Alarm stopped shortly after

18:00 UTC Reached OMC_Whitening but violins are quite high - NLN reached at 19:07 UTC. It took 1 hour and 7 mins for violins to be low enough to go through whitening (Tagging SUS).

19:07 UTC - Reached OBSERVING

22:01 UTC - COMMISSIONING - went into planned commissioning. Expected to continue until around 00:00 UTC.

22:35 - 22:39 UTC - Took a broadband calibration measurement. (screenshot)

23:46 UTC - Lockloss during commissioning during Simulines calibration - alog 74874

Other: MX/Woodshop Access Door Issue - people with access can’t get in. Fil is working on it and seems to have fixed it.

LOG:

TITLE: 12/19 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Aquisition
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.33 μm/s 
QUICK SUMMARY:

- H1 is currently relocking at ACQUIRE DRMI 1F

- SEI/CDS/DMs ok

As Ryan did last week 74741. I have taken PEM_MAG_INJ and SUS_CHARGE from WAITING to DOWN so that they do not run tomorrow. Instead, tomorrow Louis will try the risky DARM loop swaps and calibration. To re-enable the automated measurements, the nodes should be requested to INJECTIONS_COMPLETE before next Tuesday.

Lockloss during commissioning during simulines calibration. Investigation ongoing since we have lost lock 3 times during simulines in the last week (with one successful run) - currently unsure if simulines is a culprit.

I took the noise injection of jitter and arm ASC with cold OM2. The templates I ran are as follows. The noise injection of LSC will be taken after FF is updated for cold OM2.

IMC_PZT_P_inj.xml
IMC_PZT_Y_inj.xml
CHARD_P_EXC.xml
CHARD_Y_EXC.xml
DHARD_P_EXC.xml
DHARD_Y_EXC.xml
DSOFT_P_exc.xml
DSOFT_Y_exc.xml
CSOFT_P_exc.xml
CSOFT_Y_exc.xml

IFO is in NLN and OBSERVING as of 19:07 UTC (54 min lock).

Mon Dec 18 10:07:48 2023 INFO: Fill completed in 7min 44secs

Jordan confirmed a good fill curbside. He noted there is an ice ball around the end of the discharge line.

TC mins were -75C,-70C.

Here's a comparison of Pcal to DeltaL External and GDS Calib Strain broadband measurements with OM2 hot and cold.

File path to DTT template: /ligo/home/dana.jones/Documents/OM2_heating/OM2_hot_v_cold.xml

Lockloss from NLN - brief investigation via lockloss tool shows EX as the first thing that saturated.

At 16:40UTC (8:40am) I changed H1:AWC-OM2_TSAMS_POWER_SET from 4.6 to 0. This will cool off OM2 over the next few hours. Temperature is already dropping, plot.

Ibrahim is currently relocking the IFO. Accepted sdf in safe.snap, will need to accept in observe.snap.

TITLE: 12/18 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 2mph Gusts, 0mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.31 μm/s
QUICK SUMMARY:

IFO is in NLN and OBSERVING as of 00:37 UTC (~15 hr 30 min lock)

Full DQ shift report is here.

• Duty cycle: 89.44%, 64%, 55%, 64%, 89%, 87% and 88%. Week average: 76%
• BNS range: from 140~160 Mpc. Most time is around 155~160 Mpc. Some lockloss caused by unknown reason. One lockloss is due to ADC error. Some are due to earthquakes.
• Fscan-observing: line counts are most from 500-600.
  • Also some combs appear (74848)
  • Fscan-observing is not working on Friday, 12/15
• Hveto from Wednesday to Sunday
  • No rounds completed above threshold. 

TITLE: 12/18 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 159Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:

- Following the EQ lockloss from earlier, H1 is back to NLN @ 0:16/OBSERVE @ 0:36 (SQZ was having trouble tuning the sqz angle due to commissioner changes, but Naoki reverted these changes so we should have no further issue)

- 0:29 - inc 4.9 EQ from Mexico

• Back to CALM @ 0:50

- Other than the EQ it was an uneventful night, nothing else to report

LOG:

No log for this shift.

Lockloss @ 23:25 UTC from some sudden, local seismic activity.

I first noticed the channel on Picket Fence for the station on the Olympic Peninsula turn yellow, then PRG and circulating power signals started going unstable, then lockloss all within about 10 seconds. EQ mode activated one minute later. USGS doesn't show any nearby earthquakes, but judging from the order the Picket Fence stations saw the motion, it seems to have come from off the western WA coast.

Hsiang-Yu, Ansel Neunzert

We notice 23.8092 Hz, the odd harmonics peak of 1.9 Hz comb, show up again on 12/11~12 ,12/14 and 12/16 (Fscan-observing on 12/15 is not working). After raising this, I also check last week's DQ shift record. It also existed on 12/5, 12/6, 12/8 and 12/9. This comb was known before and have LLO alog 66036 and git issue. The attach figure is fscan-observing screenshot on 12/16.