Lockloss @ 21:13 UTC - link to online lockloss tool
No obvious cause; earthquakes had passed and wind is still relatively low. ETMX L3 (as usual) saw first motion.
Sun May 12 12:04:18 2024 INFO: Fill completed in 4min 15secs
This is the second run today, with new trip temps -130C. A short fill unsurprisingly following a 14min fill two hours ago.
Lockloss @ 18:30 UTC - link to online lockloss tool
M4.9 quake out of Mexico (originally reported by seismon as a 5.3). Earthquake mode activated about a minute before lockloss.
H1 back to observing at 20:52 UTC
Sun May 12 10:14:09 2024 INFO: Fill completed in 14min 5secs
outside temp was 28C (82F) at fill time, TCs dropped down to the -120C trip over 14mins before the pressure spike could build. There was a lack of free flowing LN2 which would have resulted in TCmins of -200C.
I have lowered the nominal trip temps down to -130C (full summer mode, as was used last year from June - October).
We will try again at noon today.
TITLE: 05/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 3mph Gusts, 2mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.14 μm/s
QUICK SUMMARY: H1 has been locked and observing for an hour. Looks like two earthquakes caused the locklosses overnight; a M4.9 out of Colombia and a M6.4 out of southern Mexico.
TITLE: 05/12 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Currently Observing and have been Locked for 3.5 hours. During relocking we were still having the DRMI kick issues, but after going through a couple times slowly we made it though; hopefully that isn't an issue overnight.
LOG:
23:00 Detector Observing and Locked for almost 7 hours
02:42 Superevent s240512r (two candidates in a row for me!)
02:46 Lockloss
03:10 Lockloss from ENGAGE_DRMI_ASC after two beamsplitter saturations
03:21 Following Ibrahim and Sheilas' Temporary Solution 2, I paused at ACQUIRE_DRMI_1F and lowered PRCL1 gain
- Continued step by step through the states slowly, especially ENGAGE_DRMI_ASC and TURN_ON_BS_STAGE2, but it was all for naught
03:26 Lockloss from OFFLOAD_DRMI_ASC
03:38 I started an initial alignment because it was trying to cycle through CHECK_MICH_FRINGES multiple times (even though it had already caught DRMI 1F three times since the NLN lockloss!)
04:01 Initial alignment complete, going up to ACQUIRE_DRMI_1F
- Again lowered PRCL1 gain and stepped through each state up to OFFLOAD_DRMI_ASC, then continued when we didn't lose lock (I forgot to put the gain back but I did it here and we were okay), and t
04:44 NOMINAL_LOW_NOISE
04:47 Observing
Lockloss @ 05/12 02:46 UTC, five minutes after a superevent candidate (S240512r)
04:47 Observing
Closes FAMIS#26300, last checked in 77519
Corner Station Fans (attachment1)
- FAN4 1 (attachment2) is fully within range, but looks to have started oscillating sharply over the past few days. It makes sense that the fan would grow louder because of the jump in temperature over the last few days, but for whatever reason the oscillations are also much sharper than they were last year (attachment3). I am guessing this difference is just from a change made to the fan/controls but still wanted to note it.
- All other fans are looking normal and within range.
Outbuilding Fans (attachment4)
- All fans are looking normal and within range.
Closes FAMIS#25990, last checked 77540
Things of note:
- ITMY ST1 V2 - slightly elevated compared to previous measurements
- BS ST2 H1, H2, and H3 - significant hump between 5 and 11 Hz
- ETMX ST1 V1 - slightly elevated
- ETMX ST2 H1, H2, and H3 - significant hump between 6 and 15 Hz
- ETMY ST2 H1, H2, and H3 - significant hump between 6 and 9.5 Hz
TITLE: 05/11 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Mostly uneventful day just with one lockloss and a break for calibration sweeps.
LOG:
No log for this shift.
TITLE: 05/11 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 23mph Gusts, 18mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.12 μm/s
QUICK SUMMARY:
Observing and Locked for 7 hours. Everything looking good!
H1 dropped observing from 19:30 to 19:59 UTC (postponed an hour to wait for a thermalized IFO) for calibration sweeps in coordination with L1 and V1.
Broadband start:
PDT: 2024-05-11 12:31:00.000000 PDT
UTC: 2024-05-11 19:31:00.000000 UTC
GPS: 1399491078.000000
Simulines start:
PDT: 2024-05-11 12:37:00.000000 PDT
UTC: 2024-05-11 19:37:00.000000 UTC
GPS: 1399491438.000000
Files written:
2024-05-11 19:58:50,885 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20240511T193721Z.hdf5
2024-05-11 19:58:50,893 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20240511T193721Z.hdf5
2024-05-11 19:58:50,897 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20240511T193721Z.hdf5
2024-05-11 19:58:50,902 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20240511T193721Z.hdf5
2024-05-11 19:58:50,908 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20240511T193721Z.hdf5
Sat May 11 10:12:44 2024 INFO: Fill completed in 12min 40secs
Lockloss @ 14:57 UTC - link to online lockloss tool
No obvious cause; looks like ETMX L3 saw the first motion.
H1 back to observing at 16:14 UTC
TITLE: 05/11 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 9mph Gusts, 4mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.11 μm/s
QUICK SUMMARY: H1 has been locked and observing for 11.5 hours. Several short GRB notifications overnight, as expected with the aurora.
H1 back to observing at 23:38 UTC.