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Forum: Processes Involving Optical Photons
Date: 06 Jul, 2011
From: Victor <Victor>

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Hi,

I'm trying to count optical photons which hit the PhotoMultiplier and I ran
into a problem :

There is a scintillator in front of the PM and  I put the optical surface in
front and try to check the boundary process, if it is detection then
increment the number of detected photons.
I took this idea from previous postings and from LXE example, which comes
with Geant4 Installation Package.
But I tried to use Sensitive detector at the same time, but it didn't give
me even a close number.

At the same time if I take OpticalSurface away, there are a lot if hits in
the sensitive detector.

Could you please explain which method is better and why does this happen???
My intentions is to count optical photons generated versus detected.

Thank you very much for your help!!!
Victor.

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Hi, <br><br>I&#39;m trying to count optical photons which hit the PhotoMult=
iplier and I ran into a problem :<br><br>There
 is a scintillator in front of the PM and=A0 I put the optical surface in=
=20
front and try to check the boundary process, if it is detection then=20
increment the number of detected photons.<br>
I took this idea from previous postings and from LXE example, which comes w=
ith Geant4 Installation Package.<br>But I tried to use Sensitive detector a=
t the same time, but it didn&#39;t give me even a close number. <br><br>

At the same time if I take OpticalSurface away, there are a lot if hits in =
the sensitive detector.<br><br>Could you please explain which method is bet=
ter and why does this happen??? My intentions is to count optical photons g=
enerated versus detected.<br>
<br><font color=3D"#888888">Thank you very much for your help!!!<br>Victor.=
<br></font>

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