[Gate-users] How to get output for optical photons in a detector

[Kajal Aggarwal]

Hello everyone,

I am new with Gate simulations and I am trying to simulate a geometry with
one crystal (LYSO) on an array of APD detectors. I am attaching SD to both
crystal and detector as

/gate/LYSOcrystal/attachCrystalSD
/gate/apd/attachCrystalSD

And I am generating flags for Hits, Singles and Optical. But I am looking
for the last hit position of optical photons at crystal surface. Could you
please tell me how do I obtain that information?

-- 
Thanking you.

Yours sincerely,
Kajal Aggarwal
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