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Reports until 08:02, Sunday 09 July 2023
H1 General
ryan.crouch@LIGO.ORG - posted 08:02, Sunday 09 July 2023 (71167)
OPS Sunday owl summary

TITLE: 07/09 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Unknown
SHIFT SUMMARY:

Superevent S230709bi

Lockloss at 13:01 from the ITMX ISIs tripping, RIP to the new longest lock of O4 of 54 hours

Went through the call list, got ahold of Jenne and Keita, who came on to TS and helped diagnose. We're seeing glitches in the T240 channels, the glitches only stopped once we went into OFFLINE (We later noticed that this was just due to the channels being saturated), we tried turning off the master switch and glitches persisted so this might be an electronics issue. Called Jim again and he answered and is getting online soon as of 14:52UTC.

Jim is currently on TS helping diagnose and I'm handing off to Austin as of 15:00

LOG:

No log for this shift

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