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Message ID: 5460     Entry time: Mon Sep 19 15:30:22 2011
Author: Paul 
Type: Update 
Category: SUS 
Subject: SRM oplev OSEM yaw calibration curve 

 I made the first measurements towards oplev calibration measurements: calibrating the oplevs in SRM YAW. The measurements seemed fine, I had a range of between -1.5 and 1.5 in SRM DC alignment before clipping on mirrors on the oplev bench became a problem. This seemed to be plenty to get a decent fit for the spot position against DC alignment value - see attached plot. The fitted gradient was -420um oplev yaw count. I calculated oplev yaw values as UL+LL-UR-LR. Pitch next.

Attachment 1: SRM_YAW_calib_curve.png  7 kB  | Hide | Hide all
SRM_YAW_calib_curve.png
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