Reports until 19:20, Thursday 11 September 2025
LHO General
ibrahim.abouelfettouh@LIGO.ORG - posted 19:20, Thursday 11 September 2025 (86870)
OPS Eve Shift Summary

TITLE: 09/12 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: NONE
SHIFT SUMMARY:

IFO is in DOWN and MAINTENANCE

We are still working on figuring out what happened post-outage that is yielding a glitchy interferometer when locked.

Due to the risk of damaging the interferometer, the decision has been made to cancel the OWL shift, shorten the EVE shift and stay in DOWN until tomorrow.

PSL Dust is fluctuating but has been increasing in the last 2-3 hours. I assume that this is due to the PSL work that was done 2/3 hours ago - this has not been an issue in the past though I've attached a plot.

LOG:

None

Images attached to this report