TITLE: 06/20 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Currently relocking and in FIND_IR.

We've been having short locks all day, two of them being during my shift, despite the locklosses seemingly being caused by different or unknown causes. None of them seem to be caused by anything environmental, as wind and ground motion have been low (secondary useism was a bit elevated, but has been coming down and is nowhere near the amoount that we would typically be having problems with it). We've also now had two locklosses during the last two relock attempts from ENGAGE_ASC_FOR_FULL_IFO, from the spot where we've been having that glitchiness in the PR gain since coming back from the vent. Also, like Ibrahim mentioned in his end of shift alog (85186), DRMI has been taking a really long time to catch even though the flashes have been great. It's been taking us down to CHECK_MICH multiple times, and each time the alilgnment looks great.

During the relock following the 2025-06-20 00:09 UTC lockloss (85188), once we got back up to NLN, the squeezer was still working on trying to relock. It wasn't able to lock the OPO and was giving the messages "Scan timeout. Check trigger level" and "Cannot lock OPO. Check pump light on SQZT0". However, I just tried re-requesting LOCKED_CLF_DUAL on the OPO guardian, and it locked fine first try. So I guess that wasn't actually a problem? tagging sqz anyway?

LOG:

23:30 Relocking
23:59 NOMINAL_LOW_NOISE
    00:01 Observing
00:09 Lockloss
    - Running a manual initial alignment
    - Lockloss at ENGAGE_ASC_FOR_FULL_IFO
    - Lockloss from CARM_TO_TR
02:05 NOMINAL_LOW_NOISE
    02:11 Observing
03:32 Lockloss
    - Running a manual initial alignment
    - Lockloss at ENGAGE_ASC_FOR_FULL_IFO