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Reports until 08:56, Tuesday 18 February 2025
H1 SQZ
camilla.compton@LIGO.ORG - posted 08:56, Tuesday 18 February 2025 (82873)
SQZ_ANG_SERVO strangeness

After Ryan S and I changed the SQZ ang servo H1:SQZ-ADF_OMC_TRANS_PHASE yesterday, the SQZ was unhappy overnight, plot, and the servo failed to work for a few hours, should be keeping H1:SQZ-ADF_OMC_TRANS_SQZ_ANG at zero but from the attached plot, clearly wasn't.

On the positive, the SHG power has now increased to 130mW and is more stable since the LVEA temperatures are stable again.

Images attached to this report
Displaying report 1-1 of 1.