Reports until 08:59, Thursday 28 April 2016
H1 TCS (TCS)
aidan.brooks@LIGO.ORG - posted 08:59, Thursday 28 April 2016 - last comment - 12:48, Thursday 28 April 2016(26848)
Restarted HWS-X, excluded high variance data points from measurement

I restarted the HWSX sensor with a new template file that excludes the very high variance centroids from the measurement. This should result in a much less noisy measurement of the wavefront error.

The new Python version of the HWS code does this automatically by weighting each data point in the HWS image by the inverse of its variance when calculating beam properties.

Comments related to this report
aidan.brooks@LIGO.ORG - 12:02, Thursday 28 April 2016 (26855)

The HWS is working nicely now. We see the ITMX thermal lens forming again.

Images attached to this comment
aidan.brooks@LIGO.ORG - 12:48, Thursday 28 April 2016 (26856)

Did the same for HWS-Y. Also reset the magnification to 7.5 instead of the default 17.5x