Displaying report 1-1 of 1.
Reports until 00:08, Monday 02 December 2019
LHO General
patrick.thomas@LIGO.ORG - posted 00:08, Monday 02 December 2019 (53611)
Ops Eve Shift Summary
TITLE: 12/02 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Lockloss might be from an earthquake in Japan. Still struggling to relock. After two lock losses in the CARM reduction states, moved to initial alignment. Could not get SRY to acquire in initial alignment and gave up on it to try relocking again. I moved the SEI_CONF state from USEISM to WINDY because the green arms were more stable in WINDY, but have now set it back to USEISM.
LOG:

01:24 UTC Dick leaving site.
03:56 UTC Dropped out of observing by squeezer
03:58 UTC Hit INIT on SQZ_MANAGER
04:00 UTC Back to observing
04:40 UTC Changed SEI_CONF from USEISM to EARTH_QUAKE for 4.1 mag earthquake in Canada.
04:41 UTC Dropped out of observing by H1_ISI_ETMY SDF
04:45 UTC Changed SEI_CONF back to USEISM. SDF differences cleared by this.
04:48 UTC Back to observing.
05:06 UTC Changed SEI_CONF to EARTH_QUAKE for 5.6 mag earthquake in Japan. Knocked out of observing by SDF differences again.
05:09 UTC Lock loss. Sudden spike in seismic signal.
05:11 UTC Putting ISC_LOCK in DOWN until ground settles.
05:12 UTC Set observatory mode to earthquake
05:36 UTC SEI_CONF to USEISM
05:38 UTC ISC_LOCK request to NLN. Observatory mode to locking.
05:44 UTC Aligning Y arm for green by hand. Moved ETMY in pitch.
05:52 UTC Lock loss from locking ALS
05:52 UTC SEI_CONF to WINDY
05:59 UTC Lock loss from TURN_ON_BS_STAGE2
06:13 UTC Lock loss from CARM_150_PICOMETERS
06:27 UTC Lock loss from CARM_OFFSET_REDUCTION
06:29 UTC Proceeding to initial alignment
06:45 UTC Set observatory mode to aligning
06:51 UTC Seems stuck on ACQUIRE_SRY
ALIGN_IFO to DOWN
misaligned SRM
AS-AS_C is already well centered
realigned SRM
requested SRC_ALIGN_OFFLOADED
changed request to SRC_ALIGN
hit down, init for align_ifo
moved SRM in pitch and yaw
moved SRM to 1 hour ago
skipping rest of initial alignment
set observatory mode to locking
07:17 UTC Script moved automatically to ACQUIRE_PRMI
07:18 UTC PRMI locked
07:20 UTC DRMI locked
07:26 UTC Lockloss from CARM_OFFSET_REDUCTION
07:41 UTC Lockloss from DARM_TO_RF
07:42 UTC Set SEI_CONF to USEISM
07:45 Lock loss from FIND_IR
07:56 UTC Lock loss from CARM_TO_TR
07:59 UTC Lock loss from LOCKING_ALS
Displaying report 1-1 of 1.