oli.patane@LIGO.ORG - posted 16:41, Thursday 23 October 2025 (87704)
Ops Day Shift End
TITLE: 10/23 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Multiple locklosses today while continuing to troubleshoot the ifo. Multiple initial alignments were ran (it seems like we're needing them more often the past few days). Locking attempts and locklosses are documented in 87679 and 87701. There are multiple issues so it's been hard trying to distinguish them from each other and investigate one at a time. Secondary microseism has been heading back up too unfortunately.
LOG:
14:30UTC Started trying to relock
- Ran initial alignment
- Various locklosses
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 14:52 | FAC | Randy | YARM | n | Sealing the tube | 21:57 |
| 15:32 | Richard, Ken | MX, MY | n | Checking out emergency pump | 16:03 | |
| 16:28 | FAC | Kim | EX, MX | n | Putting down rain mats | 16:56 |
| 16:44 | FAC | Tyler + contractor | MY | n | Looking at scaffolding | 18:44 |
| 19:37 | Keita | OptLab | y(local) | ISS Array | 22:26 | |
| 20:09 | PCAL | Tony | PCAL Lab | y(local) | Take equipment in and put on apetures | 20:14 |