[Gate-users] Photon point spread kernel estimation

[Rutger Fick]

Dear Gate users,

I want to estimate the point spread kernel of a photon point source,
describing the dose deposition of all primary photon interactions for
different energy levels.

In my understanding, this means for a given point source in water, I need
all photons to only interact at the origin of the point source (and nowhere
else), while having a DoseActor everywhere around the point source.

Is it possible to force the photons' interaction at a single voxel in Gate?
Any help or reference to an example I can use is greatly appreciated!

Thank you and kind regards,
Rutger Fick
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