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new technote on SiPM gain uniformity



I have posted a new technote gluex-doc-1012 to the portal on the subject 
of SiPM gain non-uniformities and how they contribute to the energy 
resolution.  The treatment is all analytical, with a Monte Carlo check 
for one set of parameters.  Doing it analytically is a bit tedious, but 
it has the advantage that you end up with formulas that show the 
sensitivity over the entire range of possible design parameters.

The bottom line is that there is considerable room for variability in 
the tile-to-tile gain of the SiPM modules without much effect on the 
final energy resolution, provided that the light guides spread out the 
light from individual fibers broadly enough over the face of the detectors.

Richard Jones

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