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Reports until 22:01, Friday 24 January 2025
H1 General (SQZ)
ryan.crouch@LIGO.ORG - posted 22:01, Friday 24 January 2025 (82457)
OPS Friday EVE shift summary

TITLE: 01/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Over a few hours I've seen the range slowly degrade as the SQZ angle slowly increases and REFL_RF6_ABS_OUTPUT decreases. (Tagging SQZ) Lockloss at the end of the shift, currently relocking at DRMI
LOG: No log

00:56 Observing

05:15 UTC lockloss (6 hour lock)

We keep losing it at locking ALS, something makes the arm start oscillating and then the wfs start working hard to fix it and we lose lock. ALS_Y can survive it sometimes. The BS is wicked misaligned now, CHECK_MICH moved it 2 urads in pitch and 1 urad in yaw.

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