ryan.crouch@LIGO.ORG - posted 22:00, Monday 14 July 2025 (85755)
OPS Monday EVE shift summary
TITLE: 07/15 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 144Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Lockloss at the beginning of the shift, high winds made relocking a struggle till they calmed down in the last 1.5 hours. We've been locked for about an hour as of 05:00 UTC.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 22:56 | SAF | LVEA | LVEA | YES | LVEA IS LASER HAZARD \u0d26\u0d3f(\u239a_\u239a) | 14:34 |
| 22:46 | ISS | Keita | Optics Lab | No | Working on PSL ISS system | 00:08 |
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00:11 UTC Observing
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00:23 UTC lockloss after only 15 minutes
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The winds are teetering around 30-40 mph for gusts and 20-30 mph for the 3 minute avg
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We've lost lock in the same spot twice during CARM_OFFSET_REDUCTION with a large DHARD oscillation and a "Low recycling gain" warning. Potentially meaning alignment is off somewhere?
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02:39 - 02:57 UTC Initial Alignment
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04:08 UTC Observing
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Images attached to this report
