Reports until 13:08, Friday 14 October 2022
H1 SQZ
camilla.compton@LIGO.ORG - posted 13:08, Friday 14 October 2022 (65334)
OPO dither locked and light on OPO_IR _PD

Naoki, Camilla

We turned on the SQZ laser and Ryan S. aligned all suspensions in HAM7. HAM7 SEI is still locked so we will plan to check our SQZT7 irises and realign green (alog 65164) after SEI is unlocked next week.

In the meantime, we turned on the OPO TEC, set to 32.35deg and dither locked the OPO. With 20mW into the SEED at SQZT0, Naoki aligned ZM1,2,3 (to this alignment) to get 300uW on OPO_IR_PD_LF. I think we can't do our nominal LOCKED_CLF_DUAL as need to replace the SEED/CLF fiber switch first (alog 65063).

We then changed all ZM alignments back to the same alignment as the day we added the irises (30 Sept). Some had been reset during the computer restarts, I have NOT accepted them in sdf.

SQZ laser left on with all SQZT0 to HAM7 shutters closed. 

Images attached to this report