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Message ID: 808
Entry time: Thu Aug 7 10:27:59 2008
In reply to: 807
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Author: |
rana |
Type: |
Update |
Category: |
SUS |
Subject: |
Free swinging OSEM spectra |
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Sometimes we see extra peaks in the OSEM spectra coming from a beat between the regular eigenmodes.
This probably comes from the OSEM shadow sensor not being entirely linear - the nonlinearity is
greatly increased if the magnet is not perfectly centered in the LED beam. So the beats are
probably there at some level in all of them; usually below the noise. |