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Entry  Tue Mar 27 23:32:22 2012, frank, tara, DailyProgress, Seismic, Seismic coupling from curtain frame to beat IMG_0681.jpg
    Reply  Thu Mar 29 00:46:33 2012, frank, tara, DailyProgress, Seismic, Seismic coupling from curtain frame to beat IMG_0687.JPGIMG_0688.JPG
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          Reply  Tue Apr 3 20:56:10 2012, frank, tara, DailyProgress, Seismic, Seismic coupling from curtain frame to beat beat_2012_04_03.png
             Reply  Wed Apr 4 18:57:11 2012, rana, DailyProgress, Seismic, Seismic coupling from curtain frame to beat 
                Reply  Sun Apr 8 23:35:05 2012, tara, DailyProgress, Seismic, Seismic coupling from curtain frame to beat beat_ciplot.pngbeat_ciplot.png
                   Reply  Mon Apr 9 23:05:44 2012, tara, DailyProgress, Seismic, Seismic coupling from curtain frame to beat brownian_mult.m.zip
Message ID: 904     Entry time: Mon Apr 9 23:05:44 2012     In reply to: 903
Author: tara 
Type: DailyProgress 
Category: Seismic 
Subject: Seismic coupling from curtain frame to beat 

Ting's code for new coating thermal noise is attached. This is the code used for the calculation in their paper (not published yet). They use loss in shear and bulk mode which are assumed to be equal to the loss measured from ring down. The result is ~5% different from the calculation from Harry et al's result.

    We talked to Huan about how their coating Brownian noise calculation differs from that of Harry etal. The main points are:

  • different notation for loss angles
  • light penetration in the coating is considered
  • correlation between substrate surface and coating noise

Since phi_bulk and phi_shear are not well studied in the literature, the exact values are undetermined. By setting them to be equal to the regular phi obtained from ring down measurement, the result of the coating noise is not significantly different from the model we have been using.

Attachment 1: brownian_mult.m.zip  2 kB  Uploaded Mon Apr 9 20:33:10 2012
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