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Entry  Thu Jan 22 23:36:50 2009, pete, HowTo, oplevs, arm cavity oplev calibration ETMYpitpower.pngETMYpitcal.png
    Reply  Fri Jan 23 12:48:12 2009, Kakeru, Update, oplevs, arm cavity oplev calibration ITMX_pitch.png
       Reply  Thu Jan 29 17:24:41 2009, Kakeru, Update, oplevs, arm cavity oplev calibration 
          Reply  Sat Mar 14 22:53:12 2009, Kakeru, Update, oplevs, arm cavity oplev calibration oplev.pdf
             Reply  Fri Mar 20 15:37:58 2009, Kakeru, Update, oplevs, arm cavity oplev calibration 
                Reply  Thu Mar 26 09:08:18 2009, Kakeru, Update, oplevs, arm cavity oplev calibration 
Message ID: 1249     Entry time: Fri Jan 23 12:48:12 2009     In reply to: 1247     Reply to this: 1259
Author: Kakeru 
Type: Update 
Category: oplevs 
Subject: arm cavity oplev calibration 
I calibrated optlevs of x and y arm cavity, indipendently from Peter's work.

ITMX pit: 77 microrad/ct
ITMX yaw: 73 microrad/ct
ETMX pit: 280 microrad/ct
ETMX yaw: 263 microrad/ct

ITMY pit: 120 microrad/ct
ITMY yaw: 93 microrad/ct
ETMY pit: 280 microrad/ct
ETMY yaw: 270 microrad/ct

This result is similar to Royal's one (within 30% difference except for ETMX pit), but different from Peter's in ETMY.

The attached figure is the data and fitted curve of ITMX pit.
I took this data for 8s, with 4 Hz excitation.
Attachment 1: ITMX_pitch.png  19 kB  | Hide | Hide all
ITMX_pitch.png
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