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Dear Geant-Users, I have set up a neutron detector simulation with geant 4.6.2 starting from Example A01. The detector consists of a He-3 tube inside a box of polyethylene. The triton production process n He-3 -> p t works fine. But the efficiency I get is a factor 10 too high. Am I missing another physics list? My PhysicsList inherited from G4VModularPhysicsList contains: RegisterPhysics( new HRGeneralPhysics("general") ); RegisterPhysics( new HREMPhysics("standard EM")); RegisterPhysics( new HRMuonPhysics("muon")); RegisterPhysics( new HadronPhysicsLHEP_PRECO_HP("hadron")); RegisterPhysics( new HRIonPhysics("ion")); Does anyone have an idea? Thank you, Joachim
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