Reports until 09:44, Tuesday 26 September 2023
H1 TCS (SQZ)
camilla.compton@LIGO.ORG - posted 09:44, Tuesday 26 September 2023 (73107)
HOM Peaks moved and SQZ better this last week

Vicky noticed the HOM peaks had shifted this week compared to last week, see attached plot and 72943. The lower HOM peak (Y-arm?) is lower than usual, even comparing the same amount of time in lock. The squeezing has also been better since last week, plot attached, not inducing last nights 73100 lock with lowered opo_grTrans_setpoint_uW.

Things that have changed since last week: OM2 heater was turned back on 72967, CO2X laser power increased 73003, alignment changed either in IFO or SQZ 73105, adjusted SHG_SERVO_IN1GAIN 72978 (don't expect to effect anything).

Images attached to this report