cheryl.vorvick@LIGO.ORG - posted 15:32, Wednesday 29 June 2016 - last comment - 10:13, Friday 01 July 2016(28064)
8 minutes of power up - alignment changes
biggest = prm pitch changing by 2.5urad
close second = im4 pitch changing by 1,15urad
plot and chart of top 16 optics/DOFs attached
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plot of optics/DOFs in the chart - meant to attach yesterday. I
used OpLev signals when available and OSEMs when not.
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UPDATE to my alog's less than descriptive title: I think the original title suggests these changes were during a 40W lock, but this is not the case.
The optic alignment changes are actually happening over 8 minutes of full lock while the input power increased from 22W, the O1 power level, to 40W.