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H1 SQZ
naoki.aritomi@LIGO.ORG - posted 22:25, Thursday 04 May 2023 (69338)
Green QPD and IR camera at FC transmission respond to ZM3 well

Naoki, Vicky

This is the continued work of alog69276. After centering the FC2 by ZM3, the optimal green QPD output is 0.046 for pitch and -0.0037 for yaw. So we set the offset of input matrix for INJ ANG as -0.046 for pitch and 0.0037 for yaw. Then we moved the ZM3 and checked the response of green QPD and IR camera as shown in the attached figure. The green QPD and IR camera respond to the ZM3 well. We will implement the beam spot control with these signals soon.

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