Reports until 11:13, Thursday 21 March 2024
H1 SQZ
camilla.compton@LIGO.ORG - posted 11:13, Thursday 21 March 2024 - last comment - 15:28, Thursday 21 March 2024(76592)
Repeating ADF Phase scan for SQZ angle servo

Sheila, Camilla

We started to repeat the ADF scan from 76561 after the IFO had been locked only ~20minutes. Using 'ezcastep H1:SQZ-ADF_OMC_TRANS_PHASE -s '180' '+6,12'', lost lock before the scan finished. Leaving H1:SQZ-ADF_OMC_TRANS_PHASE to 100 so we can do this again once relocked.

Plan to repeat once the IFO is thermalized (~4+ hours). In theory the optimum ADF phase setting shouldn't change, want to confrim this.

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camilla.compton@LIGO.ORG - 15:28, Thursday 21 March 2024 (76596)

Restarted 180s steps of 6deg at 18:52UTC, NLN since 18:45UTC. Again lost lock before we could take a thermalized data set but there seems like a lot of rotation that could be an indication of the SRCL detuning changing as we powerup.

Naoki and I are leaving H1:SQZ-ADF_OMC_TRANS_PHASE at 118deg but still want to redo the scan with a thermalized IFO.

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