TITLE: 04/22 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Ed
SHIFT SUMMARY:
Got some locking practice this shift (specifically with ALSx alignment, & ALSx polarization). Also rode thru a 6.6 EQ. :)
LOG:
- 23:18 H1 to NLN
- See SDF Diff Note
- See ISI ETMy ST2 SPM Diff (as seen by Niko here). Just TRAMP channels, so took from 0 back to 5 & updated SDF.
- 23:26 PEM Injection work begins for this shift (Robert, Sharan, Philippe at LVEA & Control Room)
- 0:12 Kyle notifying he returned from Mid-station...a while ago
- 0:33-0:45 FAMIS Tasks: Topped off TCS Chillers and checked HEPI fluid level (Corey)
- 0:37 Guardian thought TTFFS was UNLOCKED! This would have taken us out of OBSERVING.
- 1:06 This is when I noticed the issue above (after I came back from FAMIS tasks & writing alogs). So I asked Sheila if she could take a look.
- 1:38 Lockloss (ALSx had issues)
- Tried to not run an alignment, but kept dropping out during LOCKING_ARMS_GREEN
- ALSx had issues. It would look good and then a few seconds later (w/ WFS engaged), it would slowly drop in power.
- Took break to try to lower its polarization, but had no luck remotely decreasing it.
- Eventually made it through LOCKING_ARMS_GREEN. But ALSx did drop down to about 0.8.
- After optimizing PRMI, revisited the Green Arms. Able to get x & y arms up to about 1.08.
- Tweaked PRM to get DRMI optimized
- 2:38 back to Nominal Low Noise & PEM crew returning to injection work.
- 3:47 Lockloss (had to help ALSx again)
- 4:32 NLN & back to PEM Injections
- 4:34 - 4:48 Simple Site Activy PEM injections in the Control Room
- 4:54 Continuing out in LVEA (i.e. looking for 48Hz line)
- 5:02 Lockloss (they suspect it was their flashlight inside HAM5. No issues with ALS & skipped PRMI this time)
- 5:43 EQ Verbal Alarm (Philippines Mag 6.4 or 6.6)
- 5:53 NLN
- 5:56 PEM Injection team to LVEA
- 6:03 - 6:49 Transitioned to Earthquake mode!
- 6:53 PEM crew out of LVEA: PEM Injections "formally done" (some minor loose ends though)
- 6:56 After 12+hrs H1 back to OBSERVING