TITLE: 10/14 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Pretty quiet evening with just one lockloss followed by an automatic relock. Range has been keeping fairly steady this lock.

• 23:30 - H1 locked for 1.5 hours
• 23:53 - Lockloss - alog80652
• 00:48 - Resumed observing

H1 has been locked and observing for just over 4 hours.

Lockloss @ 23:53 UTC - link to lockloss tool

No obvious cause. Maybe a small ETMX glitch before the lockloss, but otherwise I haven't noticed anything else.

TITLE: 10/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: We've been locked for just over 2 hours, 3 locklosses today fairly automated relocks.
LOG: No log.

• 14:06 UTC lockloss
  • I adjusted the OPO temperature while we were relocking as it looked like the range had been slowly degrading again this morning.
  • Ran into SQZ issues, it ended up being from a PMC_PZT voltage checker alog80646. (contacted help)
  • I ran a SCAN_SZQANGLE once we had fixed it as we had been locked for 2 hours at that time.
  • 17:17 UTC Observing, range looks good... Better than the stretch this morning.
• 19:18 UTC Lockloss (4:04 lock)
  • 20:05 UTC MAX_POWER lockloss (IMC tag in lockloss tool) IMC and ASC-AS_A lost lock at the same time
  • 21:27  UTC Observing after damping violins in OMC_WHITENING for 10 minutes and adjusting the OPO temp to fix high freq SQZing

TITLE: 10/13 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.45 μm/s
QUICK SUMMARY: H1 has been locked and observing for 1.5 hours.

• Wind is low, microseism trending down and now just below the 90th percentile
• Planning to check OPO temp once thermalized

Laser Status:
    NPRO output power is 1.829W (nominal ~2W)
    AMP1 output power is 64.44W (nominal ~70W)
    AMP2 output power is 137.5W (nominal 135-140W)
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 3 days, 3 hr 9 minutes
    Reflected power = 24.22W
    Transmitted power = 101.8W
    PowerSum = 126.0W

FSS:
    It has been locked for 0 days 0 hr and 21 min
    TPD[V] = 0.7953V

ISS:
    The diffracted power is around 2.1%
    Last saturation event was 0 days 0 hours and 22 minutes ago

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

EX saturation then lockoss

RyanC, Camilla, Vicky

I noticed that the SQZer wasn't locking from NUC33 this morning when I first adjusted the OPO temperature. The OPO kept dropping when the FC trys to lock IR, there was a SQZ ISS saturated notification on DIAG_MAIN. I looked through the alogs and wikis on this. I investigated the checks that RyanS went through last night in alog80639 to no avail, I also tried setting FC1 & 2 back to their spots from the last time we locked the SQZer using OSEMs which didn't help either. I ended up contacting Camilla, where we:

• tried SQZ_FC guardian step by step, saw the issue was at IR_FOUND which is where we change the FC VCO, at this point OPO was unlocking, but OPO shouldn't be effected by FC VCO.
• We then followed instructions in SQZ wiki for if FC green wound't lock and touched up FC to improve green alignment H1:SQZ-FC_TRANS_C_LF_OUTPUT improved form 75 to 120.
• Still same problem persisted, Camilla didn't understand FC VCO so called Vicky.
• Vicky said it shouldn't be related, check SQZ_MANGER.
• Found that once SQZ_MANGER was paused, there was no issues.
• Tracked down to PMC PZT voltage being high outside of range added in https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80371. And then SQZ_MANAGER pulled everything DOWN.
• We increased this range to def PMC_PZT_OK(): return 5 < ezca['SQZ-PMC_PZT_VOLTS'] < 95 and everything worked fine. Simular issue to what Ryan Short had in https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80490
• To do for SQZ team, make this checker / the Beckhoff scan for the PMC PZT smarter

Sun Oct 13 10:12:24 2024 INFO: Fill completed in 12min 21secs

Overall the fill looks good, but the TCs are not showing their normal winter profile and are getting very close to the -200C limit. Friday 11oct2024 plot shown for comparison.

Also TC-B again looks significantly different from TC-A.

TITLE: 10/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism, Lock Aquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: Second saturday tours today, we've been struggling to relock following the EQ due to the elevated secondary microseism.

• 16:00 UTC SEI_ENV to useism, there's a large storm by the Aleutians
• 17:52 UTC lockloss (20:46 lock), potentially from a 6.2 from Costa Rica that came through at the time without an alert, verbal alerted 5 minutes later
  • 19:20 UTC I started trying to relock now that the ground motion has reduced. PRMI was really struggling to lock, it took about 30 mins
  • 20:37 lost it at LOWNOISE_LENGTHNOISE_CONTROL
  • 21:25 -> 21:45 UTC Initial Alignment
  • 22:10 lock it at MAX_POWER from another EQ, 4.9 from Mexico which rung up the violins :(
  • 22:57 UTC lockloss at LOWNOISE_ESD_ETMX

Lockloss, no clear reason.

TITLE: 10/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 6mph Gusts, 5mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.42 μm/s
QUICK SUMMARY:

• We lost lock about 25 minutes ago, we had been locked for almost 9 hour
• Relocking at PRMI
• Secondary microseism is decreasing

TITLE: 10/13 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Only about an hour of observing time this shift thanks to very high microsiesm and several earthquakes this evening. Fortunately, locking has been mostly automatic despite the frequent locklosses. Violin modes have been elevated due to these locklosses as well.
LOG:

• 23:30 - H1 relocking at DRMI
• 23:58 - Lockloss in TRANSITION_FROM_ETMX
• 01:04 - Reached OMC_WHITENING; holding to damp violins

While damping violins, I noticed the SQZ pump ISS wasn't staying locked. Eventually I got to the solution of increasing the SHG launch power, but I first touched up the fiber polarization alignment by adjusting the half-wave plate on SQZT0 right before the fiber (motor 3) and minimizing the SQZ-SHG_FIBR_REJECTED signal (instructions found in alog71761). Then, I increased the SQZ-SHG_LAUNCH signal to about what it was during the previous lock stretch (17.6) by adjusting the half-wave plate immediately after the AOM on SQZT0 (motor 2). After that, I simply re-requested SQZ_MANAGER to FREQ_DEP_SQZ and squeezing was injected without issue.

• 02:14 - Lockloss in OMC_WHITENING
• 03:24 - Reached NLN fully automatic
• 03:26 - Started observing
• 04:24 - Lockloss (ETMX glitch) - alog80638

H1 is currently relocking up to MAX_POWER.

Lockloss @ 04:24 UTC - link to lockloss tool

No obvious cause, but looks like one of those ETMX glitches happened about 750ms before the lockloss (new ETM_GLITCH tag applied correctly by the lockloss tool).

TITLE: 10/12 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 9mph Gusts, 6mph 3min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.59 μm/s
QUICK SUMMARY: H1 has been down for the past 5 hours due to several earthquakes and high microseism, but currently relocking up to TRANSITION_FROM_ETMX.

• Wind low, microseism now above the 90th percentile
• h1pslcam1 is down

Lockloss at 17:52 UTC, potentially from a 6.2 from Costa Rica.

Relocking is going to be tough, given the rising microseism (getting above 90th percentile), and the winds creeping up.