corey.gray@LIGO.ORG - posted 00:09, Saturday 09 November 2019 - last comment - 15:19, Saturday 09 November 2019(53113)
Transition to OWL Log
TITLE: 11/09 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
SEI_CONF state: WINDY
Wind: 5mph Gusts, 3mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.32 μm/s
QUICK SUMMARY:
We literally just lost lock 2min before my shift! So working on bringing H1 back (nothing looks crazy btw).
NOTE regarding Calibration Lines: Operators were asked to send an email to Aaron V./Maddy W. whenever H1 drops lock so they can restart Cal lines. Email was sent a few minutes ago.
Lock loss 1257321505
This looks like a very similar situation to the lock loss on Thursday (alog53069). The squeezer lost lock just before we see the LSC-POP_A_LF_OUT signal drop. This time though, the LO servo channel does not go as unstable. Instead, it drastically drops in power.