Reports until 07:59, Thursday 25 May 2023
LHO General
thomas.shaffer@LIGO.ORG - posted 07:59, Thursday 25 May 2023 - last comment - 17:58, Friday 26 May 2023(69904)
Ops Day Shift Start

TITLE: 05/25 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 11mph Gusts, 8mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.08 μm/s
QUICK SUMMARY: The IFO is still down since the PR3 and ISCT1 work yesterday. It's sounding like these changes will need to be reverted this morning.

Comments related to this report
jeffrey.kissel@LIGO.ORG - 17:58, Friday 26 May 2023 (69949)
Link 

In the end the PR3 and ISCT1 table alignment was a temporary fix for the true problem. The true problem was that the HAM-ISIs were all drifting off in Yaw (RZ) slowly, but surely, for weeks -- see LHO:69934.