Reports until 22:01, Sunday 25 August 2024
H1 General
oli.patane@LIGO.ORG - posted 22:01, Sunday 25 August 2024 (79704)
Ops Eve Shift End

TITLE: 08/26 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 136Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Currently Observing and have been Locked for 1.5 hours. We were down for a while because of the big earthquake from Tonga, and recovery took a while because we were having issues with the ALSX crystal frequency. Eventually it fixed itself, as it tends to do. We got some lower state locklosses but eventaully were able to get back up with just the one initial alignment I ran when I first started relocking.
LOG:

23:30 Observing and Locked for 4 hours
23:41 Lockloss due to earthquake
01:07 Started trying to relock, starting initial alignment
    - ALSX crystal frequency errors again
    - Eventually went away, I didn''t do anything besides toggling Force and No Force
02:05 Initial alignment done, relocking
02:09 Lockloss from FIND_IR
02:17 Lockloss from OFFLOAD_DRMI_ASC
02:21 Lockloss form LOCKING_ALS
03:21 NOMINAL_LOW_NOISE    
03:23 Observing