TITLE: 12/21 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: One lockloss from an earthquake, continuously increasing microseism made relocking more difficult. The wind started to pick up around 22:00UTC. We've been locked for just 3 hours, I was not able to get the calibration measurement in.
LOG: No log

• 16:21 UTC lockloss
  • 17:39 UTC IA, SR2 was really off in pitch
  • 18:54 UTC LASER_NOISE_SUPR lockloss, now DRMI can't lock
  • 19:31 UTC 2nd IA
  • DRMI still can't lock, I ran though PRMI to confirm it was SRM that was misaligned, I trended SRM and moved it to where it was during the last successful lock acquisition (DRMI took 35 minutes). I had to move SRM 60 mrad in Pitch! This was right after finishing an IA as well
  • 21:00 Observing
• 21:54 PSL laser room yellow dust alarm, red at 23:33 (only 100 cts)