oli.patane@LIGO.ORG - posted 08:08, Sunday 06 August 2023 - last comment - 16:13, Sunday 06 August 2023(72001)
Ops DAY Shift Start
TITLE: 08/06 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: SEISMON_ALERT
Wind: 5mph Gusts, 3mph 5min avg
Primary useism: 0.07 μm/s
Secondary useism: 0.07 μm/s
QUICK SUMMARY:
Ryan S is heading over to the CER to restart the High Voltage from the lockloss(72000). Major dustmon alarm on for the PSL even though winds are low.
18:28UTC Reached Observing
I noticed that the dustmons for the PSL laser room spiked dramatically within 10 minutes of the power glitch even though wind was low at the time (attachment). The dust counts then went back down a few minutes after the NPRO and amps were restored in the PSL. We don't see how dust could jump after just a power glitch, and Austin suggested that it may just be some strange cross-coupling between the electronics in the PSL laser room and the dustmon in there.