|Message: Want to Tag Each Particle With the First Surface Material It Encounters||Not Logged In (login)|
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I am using G4GeneralParticleSource to create particles with random positions and momenta within a volume. I want to tag each particle with the first non-vacuum surface it encounters in that volume, and then output that surface information (the material, for instance) to a file along with my other scoring information for that particle, for each particle. Can someone give me an idea of how to do that?
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