Reports until 16:36, Wednesday 11 December 2019
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rahul.kumar@LIGO.ORG - posted 16:36, Wednesday 11 December 2019 (53843)
OPLEV charge measurements on ETMX and ETMY

Betsy, Rahul

This morning the IFO was down due to PSL issues, hence we got a window of opportunity to take charge measurements on the ETMX and ETMY. Attached below are the results for the same.

ETMY: There is a slight increase in the effective bias voltage for all 3 quadrant for the pitch (breached 50V for the 2nd quadrant). However for the Yaw the bias voltages are within permissible limits and there has been a slight decline.

ETMX: Overall, the bias voltage has been less than 50V, except for the 1st quadrant for the pitch and yaw which are at +50V.

 

Images attached to this report