[Gate-users] Unable to detect optical photons when the source is optical point source

[open researcher]

I am using an optical point source, the source is below a glass cylinder
and I have defined a dielectric_metal boundary between mother volume of the
glass cylinder and the glass cylinder, so that optical photons are
detected. But the ascii optical adder file and ascii hit files are empty
indicating that no photons are detected.

(Is there any condition that only optical photons generated from a
scintillation process only will be detected ?  because when I define a
scintillating crystal between the source and glass cylinder optical photons
are detected)

 What should I do inorder to detect these photons ? I am using Gate v-6.1
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