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Reports until 17:25, Monday 25 July 2016
H1 TCS (AOS)
nutsinee.kijbunchoo@LIGO.ORG - posted 17:25, Monday 25 July 2016 (28624)
HWS optics inspection

Betsy, Nutsinee

 

LLO recently found their HWS mirrors to be contaminated (LLOalog27041). So we went to the table to take a look at our mirrors and took some pictures.

The mirrors are dusty overall and periscope mirrors show sign of coating degradation (I assume that the watermark-looking patterns are coating defects) Betsy later explained to me those marks are leftover marks from First Contact. See below:

 

HWSX bottom periscope mirror

 

HWSX top periscope mittor (sorry I wasn't able to get a good shot)

 

HWSX STEER M7 and STEER M8

 

HWSX STEER M6 with flash light shined through the back.

 

HWSY bottom periscope mirror

 

HWSY top periscope mirror

 

HWSY periscope mirror with flash light shined through the back

 

HWSX return beam (without Hartmann plate)

 

HWSY return beam

 

HWSX has been giving us data that makes sense. HWSY data however makes no sense. I forgot to stop the code when I took the Hartmann plate out and in and somehow that caused the scripts to think that there were only few hundred peak counts when everything was closed out. I re-initialized the reference images for both HWSX and HWSY. Every necessary optics were aligned and CO2 heating power was set for 2 W PSL input.

Images attached to this report
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