Reports until 19:29, Tuesday 30 September 2025
H1 General
corey.gray@LIGO.ORG - posted 19:29, Tuesday 30 September 2025 - last comment - 21:14, Tuesday 30 September 2025(87239)
Mid-Shift Status: H1 Down 90 Min With Good DRMI But No Locking

H1 had a lockloss about 90min ago for no obvious reasons.  All was quiet as well.  Attempted to relock but DRMI did not look great; also went for Check MICH Fringes + PRMI---could not even get PRMI locks after letting it try for 20min.  Ultimately went for an alignment and where we are.  Flashes look mostly decent and POP18/90 are flashing close to 200, but just have not had any locks (only a few short ~1sec locks thus far).  Microseism is just under the 95th percentile.  Currently at 20min of DRMI locking.

Comments related to this report
corey.gray@LIGO.ORG - 21:14, Tuesday 30 September 2025 (87240)

After over 3hrs, H1 finally locked an "xRMI"!!  It took lots of waiting, 2-alignments, and me leaving the Control Room (with Lockloss Alerts on my phone) and working on the JAC table to stop me looking at DRMI and H1 trying/struggling....and just let them do their thing!  (was about ready to make some phone calls!  Oh and we are currently in USEISM state.

4:05utc Back to Observing (since being down since 0:51utc).