nutsinee.kijbunchoo@LIGO.ORG - posted 12:21, Thursday 14 May 2015 - last comment - 08:50, Friday 15 May 2015(18427)
Return SLED beam centered on HWSX
Elli, Nutsinee
The return SLED beam is now centered on the ITMX HWS. The QPD1 sum reads 1.71 (mean) and the QPD2 sum reads 1.32 (mean). Green light was resonates in both arms during the time of the measurement.
The current position of the HWSX lower periscope mirror is X: -286 Y: -927 and the current position of the HWSX upper periscope mirror is X: 300 Y: -300.
The Hartmann plate is off at the moment.
Images attached to this report
Comments related to this report
The X- and Y- positions on detectors 1 and 2 are shown in the attached plots. Was there a change in internal alignment or a change in the green power in the last 60s?
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