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.

H1 is just hit a 4 hour lock. IFO appears to be stable and seismic activity is now relatively low.

TITLE: 12/18 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.27 μm/s 
QUICK SUMMARY:

- H1 is at MOVE SPOTS following a lockloss from a Canada EQ

- CDS/DMs ok

TITLE: 12/17 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Austin
SHIFT SUMMARY: Very quiet shift until the last half hour with an EQ-caused lockloss.

• 23:25 Lockloss - alog

H1 is currently relocking, up to MOVE_SPOTS.

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.

State of H1: Observing at 159Mpc

H1 has been locked and observing for 7 hours. Quiet shift so far.

Sun Dec 17 10:05:10 2023 INFO: Fill completed in 5min 6secs

Like yesterday, the TCs started above ambient (10C,14C cf 3C) so for today's fill I raised the trip temps from -80C to -70C. The TCs just cleared this, TC(A,B) = -74C,-69C

We are making -70C the nominal trip temp for now.

Note, on plot the -80C dotted line is still being shown.

TITLE: 12/17 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: 4mph Gusts, 2mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.27 μm/s
QUICK SUMMARY:

H1 has been locked and observing for 3 hours. All systems look good.

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.

TITLE: 12/17 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 160Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:

- Lockloss @ 4:00 UTC - cause unknown

- Relocking was mostly straightforward, had a lockloss at PRMI but went all the way up the second time around, completely automated

• Back to NLN @ 5:01/OBSERVE @ 5:05 (had to wait for the VIOLIN DAMPING guardian to go into DAMP VIO FULL POWER, which is a first...cameras were able to converge <5 minutes!)

- Quiet shift otherwise, H1 locked for just under 3 hours

LOG:

No log for this shift.

I guess I spoke too soon...lockloss @ 4:00 UTC. Looks like ASC A DC and LSC DARM saw the motion first as with most locklosses these days.

Quiet night so far, H1 currently locked for 6.5 hours. Seismic motion is low and all systems appear stable.

TITLE: 12/16 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 159Mpc
INCOMING OPERATOR: Austin
SHIFT SUMMARY: Mostly quiet shift just with breaks in observing for CAL sweeps and one lockloss.

• 19:12 Dropped observing for CAL sweeps - alog74839
• 19:47 Resumed observing
• 19:58 Lockloss - alog
• 20:19 Starting initial alignment
• 21:25 Started observing

H1 has been locked and observing for close to 3 hours.

LOG:

No log for this shift.

TITLE: 12/16 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 0mph Gusts, 0mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.29 μm/s 
QUICK SUMMARY:

- IFO locked for 2.5 hours

- SEI/CDS ok

- Systems appear nominal, end station temperatures looked to have went back to its nominal temperatures

Lockloss @ 19:58 UTC - no obvious cause. Had been observing for 10 minutes following CAL sweeps.

LSC DARM looks to have seen the first motion, followed by SRCL.

H1 dropped out of observing in coordination with L1 from 19:12 UTC to 19:47 UTC to run broadband and Simulines calibration sweeps.

Broadband sweep ran from 19:13 to 19:18 UTC

Simulines start:

PST: 2023-12-16 11:20:16.447089 PST
UTC: 2023-12-16 19:20:16.447089 UTC
GPS: 1386789634.447089

Simulines end:

PST: 2023-12-16 11:42:22.643162 PST
UTC: 2023-12-16 19:42:22.643162 UTC
GPS: 1386790960.643162

Screenshot attached of CAL monitor screen taken before dropping observing. I didn't see that a PDF was generated at the end of the Simulines sweep, but five files were successfully written to the /ligo/groups/cal/H1/measurements/ directory.

Sat Dec 16 10:07:32 2023 ALERT: Fill done (errors) in 7min 28sec

Gerardo manually stopped the overfill after it became clear the TCs were not going to get down to the -80C trip temps (bottomed out at -77C and -71C).

TCs started with positive readings (+10C, +14C) outside temp was 0.4C at the time in very foggy conditions.

TITLE: 12/16 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: 3mph Gusts, 1mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.29 μm/s
QUICK SUMMARY:

H1 has been locked and observing for 32.5 hours. The end station VEA temerature excursions seem to have come back to normal (trends attached). All other systems look normal.