[Gate-users] Digitizer modules for PMT, and quantum efficiency of PMT?

[Amy Meldrum]

Gate users,

I have been doing simulations using scintillators, PMTs, and optical
photons. Up until now I have only taken the Hits.dat file and parsed the
data using a script I have written to combine the number of photons
detected per parent particle as a means of simulating a pulse that would be
seen by a PMT.


I have realized that I need to account for the quantum efficiency of the
PMT when doing these simulations. Initially I thought that by changing the
value for EFFICIENCY in the detection surface definition in the
Surfaces.xml file would be sufficient. Is this true?

Secondly, when searching for ways to simulate PMT output, the idea of using
the digitizer came up frequently. Initially I shied away from using the
digitizer because I did not understand how to incorporate it or what format
the output would even be. Has anyone used the digitizer and its modules to
recreate the output of a PMT? Such that it includes quantum efficiency, and
each 'pulse' represents the number of photons detected for a given parent
particle?  If so, what would the output look like? Would this be something
I could use to generate a simulated spectrum?


Any help is greatly appreciated.

-Amy
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