Reports until 12:01, Monday 10 March 2025
H1 SQZ
camilla.compton@LIGO.ORG - posted 12:01, Monday 10 March 2025 - last comment - 08:24, Tuesday 11 March 2025(83270)
SQZ_ANG_ADJUST Servo now back on

Sheila, Mayank, Camilla

The SQZ ang servo has been off since Feb 18th 82891. Today it was turned back on in sqzparams.py and with SQZ_ANG_ADJUST nominal state is now ADJUST_SQZ_ANG_ADF. We expect this to work better than in 82891 as we adjusted H1:SQZ-ADF_VCXO_PLL_PHASE to 25deg so that the AFD H1:SQZ-ADF_OMC_TRANS_SQZ_ANG error signal is in a linear range where our best SQZ is. This should improve the squeezing and keep it more stable.

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camilla.compton@LIGO.ORG - 08:24, Tuesday 11 March 2025 (83287)

Range was better last night with the SQZ angle servo keeping the squeezing tuned around 350Hz (yellow BLRMS), plot attached.

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