Reports until 14:05, Saturday 18 May 2024
H1 General
ryan.crouch@LIGO.ORG - posted 14:05, Saturday 18 May 2024 - last comment - 14:16, Saturday 18 May 2024(77911)
OPS Saturday update

21:04 UTC back to NLN, I'm going to see how squeezing is doing then go into observing or optimize squeezing then go into observing.

After finishing my 3rd Initial Alignment I went through another round of too small DRMI flashes and the same PRMI locking and the 20Hz buzz killing it over and over again till a lockloss, we lost it at ALIGN_RECYCLING_MIRRORS after this for some reason. For the next attempt I turned down to gains for PRMI, PRCL1 and MICH1 from 6 -> 4 and 2.8 -> 2.6 respectively in lscparams and reloading ISC_DRMI but DRMI was suddenly able to lock after a few seconds and we didn't even go through PRMI. I reverted my gain changes, I have no idea if they would have helped or not, turning the MICH1 gain down from 3.2 to 2.8 did help us to survive longer in PRMI but it still was not enough.

Comments related to this report
ryan.crouch@LIGO.ORG - 14:16, Saturday 18 May 2024 (77912)SQZ

21:15UTC After running the SCAN_{ALIGNMENT, ANG} for SQZ I went back to observing at 154 Mpc. The ALIGNMENT and ANG scans might need to be done again as we thermalize in 2 or 3 hours.