|Message: secondary neutron generation from proton beam||Not Logged In (login)|
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Hi, I am beginner in Geant4. I want to get number of secondary neutron due to incident proton beam (250 MeV pencil beam) on a cylindrical target. I used Multifunctional detector and neutron filter like below
auto Detector10 = new G4MultiFunctionalDetector("dect_10"); G4SDManager::GetSDMpointer()->AddNewDetector(Detector10); G4VPrimitiveScorer* primitive; //primitive = new G4PSTrackLength("TrackLength"); primitive = new G4PSSphereSurfaceCurrent(psName="Current", fCurrent_In); //primitive = new G4PSPassageCellCurrent(psName="Current", fCurrent_In); primitive ->SetFilter(neutronFilter); Detector10->RegisterPrimitive(primitive);
I am getting some score but with RMS value almost 10 times higher than mean neutron value. I used "FTFP_BERT" physics. Here I am attaching my Detectorconstuction.cc, eventaction.cc and runaction.cc (Note: I have edited example/basic/B4d)
Kindly give me some suggestion in this regards.
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/09/16/07.28-99763-4dDetectorConstruction.cc http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/09/16/07.28-32675-B4RunAction.cc http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/09/16/07.28-19509-B4dEventAction.cc http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/09/16/07.28-90567-4dActionInitialization.cc http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/09/16/07.28-76186-PrimaryGeneratorAction.cc