TITLE: 02/09 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: I had a small struggle to align XARM_IR, but I managed to get everything aligned enough. We're relocking at DC_READOUT.
LOG: No log.
- 23:31 UTC lockloss from a 7.6 earthquake from Cayman islands
- Held in down for ~3 hours until the ground motion has reduced enough to try to lock
- 03:54 UTC I started an IA after "IR was not found"
- Couldn't aquire XARM_IR, probably since HAM2 tripped so the INPUT pointing isn't good.
- Tried setting PR2 and IM4 back their top mass osems positions from the earlier IA ( I probably should have done the rest of the IMs here as well)
- Tried reverting alignments to the same point during the last IA (20:18 UTC 02/08) then restarted with GREEN_ARMs again
- I couldn't lock XARM IR again so I treneded back all the IMs top mass osems and moved them back to where they were during XARM_IR in the last IA earlier today
- I started with IM4 and when I got to IM1_P I saw us finally center on the ASC_TR_B QPD that I had been watching and getting concerned that it wasntt getting any better until I hit IM1, once I got it close the automation took over and finished the IA.
- I had to move each the IMs dozens of microradians