|Message: G4GeneralParticleSource, uniform distribution throughout volume||Not Logged In (login)|
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Hi all, I am interested in using the G4GeneralParticleSource to generate a number of neutrons distributed uniformly throughout a volume. I am controlling the G4GeneralParticleSource object completely from within my PrimaryGeneratorAction class, not via the /gps/ commands. I have set the distribution type to Volume, set the shape to Para, and configured HalfX, HalfY and HalfZ to completely enclose my world. I then ConfineSourceToVolume to the particular volumes I want (the volumes are G4PVParameterised, so I only need to confine the GPS to the one volume name). This appears to partially work. For each event, the particles are generated at a random point within the volumes I want, and the random point is different every time, but all of the particles are generated at the same point for each event. How do I configure the GPS to actually distribute the particles uniformly throughout my volume? Do I need to set the GPS's number of particles to 1, and then call GPS->GeneratePrimaryVertex as many times as I want particles? Thanks; Cheers, John Roberts Sudbury Neutrino Observatory
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