Ryan S, Sheila, Sophie, Camilla
Repeated SQZ to OMC scans in 92065, now with OM2 hot 92106, thermistor 1 is still changing plot, but the heater has been on for 16 hours has changed from 22deg to 32deg, in the past it has leveled out at 33deg so is >90% of the way there.
Re-touched up OM3/OMC alignment with OMC locked on 00 mode to get misalignment peak <0.5% (plot), saved to /sqz/h1/Templates/dtt/OMC_SCANS/Sept30_2026_OMC_scan.xml
The ran scans with /ligo/gitcommon/squeezing/sqzutils/sqz_to_OMC_mode_matching/omc_scans_sweep_psams.py
PSAM_VALUES_V5 = [-9.3, -7, -5, -1.3]
PSAM_VALUES_V4 = [-3.5, -1.5, 0.5, 3.0]
Interestingly the powers today plot on all diodes in HAM6 a 2-5% higher than last week plot. Unsure if this is caused by OM2 hot or a slightly different FC alignment.
OMC scan plot attached. SQZ to OMC mode matching is worse with hot OM2.
Plots of this with Ryans M2MS data from Monday 92103 propagated with hot OM2 ROC of 1.75m attached. Ryan and Sheila temporarily OM2 ROC edited in it the lho_O4.yaml. Hot 1.75m value from 84255 where cold OM2 ROC is 2.1m.
We are going to cool of OM2 now.
