camilla.compton@LIGO.ORG - posted 08:08, Sunday 29 October 2023 - last comment - 08:34, Sunday 29 October 2023(73815)
Ops Day Shift Start
TITLE: 10/29 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: Austin
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 3mph Gusts, 2mph 5min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.14 μm/s
QUICK SUMMARY: IFO has been locked for 3 hours. Plan to do calibration measurements at 11amPT.
There was a lockloss at 10:49UTC 1382611811 after 3h45 at NLN. Followed by an automatic relock (3 locklosses around DRMI locking).
The overnight lockloss had DARM / ETMX looking strange in the 0.5s before, see attached. We've been noticing this sort of lockloss in the past few weeks, e.g. Oli's 73578 analysis, 73539.