[Gate-users] Problem regarding crosstalk with the use of optical photon

[山中 琢]

Hello Gaters,

I'm working on the simulation of the optical photon interaction within the
multi-array scintillator blocks (2.5 x 2.5 x 25 mm, 9x9).

Now I'm trying to see the tracks of optical photon when 511-keV gamma-ray
hits one of the scintillators.
There is an air-gap between each scintillator crystals.

The source beam can generate the optical photons in one crystal but the
resulting multiple tracks ends at the boundary of a crystal and don't go
into the adjacent crystals.
I thought those optical photons can pass through the boundaries but it
never happens in my simulation.

I want to know if it's a visualization problem or GATE problem.

It'll be a great help if you can suggest me anything.
Thank you in advance.

Taku