elenna.capote@LIGO.ORG - posted 10:22, Thursday 28 August 2025 - last comment - 11:57, Thursday 28 August 2025(86618)
PRMI ASC not working
The PRC1 pitch ASC is no longer working properly, despite its successful test in this alog. While trying to debug this problem, I monitored the REFL 9, 45 and POP WFS signals and none of them crossed zero at the appropriate time. However, the PRC1 yaw ASC is working just fine.
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Tony informed me that we have been through PRMI ASC five times since the PRC1 ASC was reengaged. To my knowledge this is the first time it was bad.