ryan.crouch@LIGO.ORG - posted 08:01, Wednesday 01 November 2023 - last comment - 09:51, Wednesday 01 November 2023(73893)
OPS Monday day shift start
TITLE: 11/01 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Aquisition
OUTGOING OPERATOR: Tony
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 2mph Gusts, 0mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.28 μm/s
QUICK SUMMARY:
The violins are looking pretty rung up on DARM as we're in ENGAGE_ASC_FOR_FULL_IFO
We're waiting in OMC_WHITENING damping violins and will be for maybe a half hour? Hopefully less
We've reaquired NLN at 16:10UTC but the SQZ FC is struggling to lock.
FC was quite misaligned and not able to find a TEM00 mode for locking; I had to walk FC2 quite far to find resonance, and I also touched ZM3, see slider screenshots accepted into SDF here: ZM3 / FC2 slider diffs to relock. I probably didn't need to move ZM3. Not sure how this will fit into our recent SQZ ASC issues 73855.
Other than sliders, accepted the folllowing FDS SQZ SDFs in Observe (after LHO:73876 accepted SDF's in safe). Includes SQZ+FC ASC ON switches, and FC + LO servo locking settings.
I tweaked up sqz angle and opo temp ; in particular sqz angle seemed off by 10+ degrees even if opo temp was the same. The sqz angle may need to be adjusted later today in commissioning, since I set it for squeezing pretty early on (~30min) into lock, so expect IFO was unthermalized.