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Entry  Fri Aug 4 18:25:15 2017, gautam, Update, General, Bilinear noise coupling bilinearTest.pdf
    Reply  Mon Aug 7 16:00:41 2017, rana, Update, General, Bilinear noise coupling 
Message ID: 13169     Entry time: Mon Aug 7 16:00:41 2017     In reply to: 13167
Author: rana 
Type: Update 
Category: General 
Subject: Bilinear noise coupling 

These are not the angular test parameters that we're looking for:

 recall that what we want is the low frequency beam spot variations and the feedback to be limited to a small high frequency band.

e.g. only inject noise at 40-50 Hz, not loud enough to find at 2x the injected frequency.

It should NOT be the case that the high frequency injected noise be dominating the RMS.

The coupling should be ~1e-3; some combination of beam spot mis-centering and beam spot motion.

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