TITLE: 06/20 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Cheryl (Patrick covering at beginning of shift)
SHIFT SUMMARY:
A bit of a rough shift with 0.44Hz oscillation seen with ASC PIT signals and on oplevs (primarily ITMy).
So had a few hours of CORRECTIVE MAINTENANCE (No FRS has been filed.)
LOG:
- 8:24-9:07: H1 taken OUT of OBSERVING due to ASC instability. Marking as CORRECTIVE MAINTENANCE.
- 9:07 Locked at NLN & Back to OBSERVING. NO SDF Diffs to deal with.
- 9:20 Back to CORRECTIVE MAINTENANCE due to ASC Pit oscillation.
- 12:50 Back to OBSERVE
- 14:00 0.44 Hz noise returns & lose lock at 14:10
- 14:54: ~~ MAINTENANCE Begins ~~
- 14:54 Transitioned SEI CONFIG to VERY_WINDY_NOBRSXY
- 14:55 Christina to EX for cleaning