Reports until 16:01, Saturday 09 December 2023
H1 AOS
ryan.crouch@LIGO.ORG - posted 16:01, Saturday 09 December 2023 (74703)
OPS Saturday day shift summary

TITLE: 12/09 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Some small locks today, lots of seismic activity particularly from Iceland. LLO down due to microseism, currently relocking at DRMI.

16:17UTC

After geting no flashes on PRMI even after going through check_mich I adjusted PRM based on AS AIR and was able to get flashes and it locked shortly after, after PRMI_ASC DRMIs flashes were much better. Lockloss at TRANSITION_FROM_ETMX, Lockloss at AQUIRE_PRMI likly from an EQ from Iceland.

18:22 2nd lockloss from TRANSITION_FROM_ETMX

DRMI has been looking a little shakey the past few attempts, and both the ARMs have been locking at lower powers then typical (.75 and .92)

19:01 Lockloss at LOWNOISE_ASC

19:04 EQ mode activated, back to calm at 19:14 UTC

19:10 Lockloss at FIND_IR, maybe from the EQ?

On the next attempt I slowly stepped through the steps starting at MAX_POWER and was able to survive past TRANS_ETMX and reaquire NLN and went back into Observing at 20:02UTC

21:22UTC lockloss, possibly from an EQ

22:27 Observing

23:44UTC lockloss, possibly from an EQ