Reports until 00:03, Sunday 01 December 2019
LHO General
patrick.thomas@LIGO.ORG - posted 00:03, Sunday 01 December 2019 (53596)
Ops Eve Shift Summary
TITLE: 12/01 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ed
SHIFT SUMMARY: Lock loss cause not immediately apparent. Microseism is very high and likely making relocking difficult.
LOG:

01:31 UTC Dropped out of observing by squeezer
01:33 UTC Hit INIT on SQZ_MANAGER
01:34 UTC Back to observing
06:23 UTC Lock loss
06:31 UTC Green arms not locking after 5 minutes. Starting manually alignment.
Moved ETMX, ETMY, TMSY
06:42 UTC Lock loss from LOCKING_ALS
Microseism is quite high
06:53 UTC Script moved to locking PRMI
07:08 UTC PRMI has not locked after 15 minutes. Trying CHECK_MICH_FRINGES.
07:12 UTC Moved BS in pitch. Retrying PRMI.
07:22 UTC PRMI not staying locked. Trying CHECK_MICH_FRINGES again. Moved BS in both pitch and yaw.
07:26 UTC Retrying PRMI.
07:30 UTC Lock loss from ACQUIRE_PRMI.
07:36 UTC Stopping at CHECK_IR, blue trace found too low. Adjust COMM and DIFF offsets.
07:40 UTC Attempting to lock PRMI
07:43 UTC PRMI locked
07:50 UTC Clicked OFFLOAD_DRMI_ASC to make guardian move on, then NLN
07:51 UTC DRMI locked
07:56 UTC Lockloss from CARM_OFFSET_REDUCTION
08:00 UTC Y arm is not locking on green.
Ed taking over