TITLE: 11/22 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
Fairly decent first 2/3's of the shift; then a M7.0 earthquake (+ high microseism) made the last 3hrs of the shift tough---with ALSy being the problem child as usual. In hindsight, I probably should have just waited out the earthquake longer instead of trying to lock after 2hrs.
Ended up staying a little extra to confirm the Initial Alignment completed. Then taking H1 back to locking after tonight's earthquake activity.
LOG:
- 0006 H1 Lockloss from NLN! After only a few seconds of being in this state!
- 0006-0010 Checking foam damper for HAM1 HEPI plumbing to make sure it was not "singing" (Jim)
- 0110 Short GRB on verbal
- 0108 H1 to NLN
- Adjusted SQZ phase due to cable change by Sheila earlier today & SDF diffs noted/accepted
- 0131 Back to OBSERVING
- 0500 Earthquake Mode ACTIVATED & 3-seconds later, we were bumped out of OBSERVING, & then a few seconds later---LOCKLOSS from the S&P waves! This is after reaching 3hrs52min on lock clock.
- Not clear why we were dropped out of OBSERVING early.
- The R-wave is due here in ~30min!
- 0617 Start locking Green Arms...Y-Arm had more issues and went to INCREASE FLASHES several times.
- 0702 Finally Green Y-arm locks & offloads!!
- 0706 Earthquake motions return! (but no EQ source posted, but seen on Picket Fences, )---this caused locklosses at PRMI & earlier states....so decided to....
- 0717 Initial Alignment run
- 0731-0811 Initial Alignment restarted (still fighting seismic motion)
- ALSy taking sooooo long to converge.
- 0754 Seismic to CALM
- 0811 Relocking begins