Reports until 07:36, Sunday 19 October 2025
LHO General
ibrahim.abouelfettouh@LIGO.ORG - posted 07:36, Sunday 19 October 2025 - last comment - 10:13, Sunday 19 October 2025(87561)
OPS Day Shift Start

TITLE: 10/19 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 31mph Gusts, 16mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.37 μm/s 
QUICK SUMMARY:

IFO is LOCKING at ENGAGE_SOFT_LOOPS

IFO was in the middle of an automatic relock when I arrived. Wind was very high last night but looks to be coming down.

Should be able to go into OBSERVING soon.

Comments related to this report
ibrahim.abouelfettouh@LIGO.ORG - 08:50, Sunday 19 October 2025 (87562)

Wind did not end up going down - we lost lock at TRANISTION_ETMX and now are unable to lock ALS (it locks for a few minutes before losing lock). I think it's a combination of 90th% microseism and 35+mph gusts. According to forecasts, thewind will only begin dying down at ~2PM.

ibrahim.abouelfettouh@LIGO.ORG - 10:13, Sunday 19 October 2025 (87563)

Had a lull in wind, managed to do a fully auto initial alignment - then wind went back up over 35mph and continued losing lock. After over 15 pre-DRMI locklosses where alignment itself looks great, I've put H1 in IDLE for 30 minutes as wind comes down (though it's currently trending up).