Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/advanced/brachytherapy/src/BrachyPrimaryGeneratorAction.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
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 17 // *                                                                  *
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 24 // ********************************************************************
 25 //
 26 //
 27 // --------------------------------------------------------------
 28 //                 GEANT 4 - Brachytherapy example
 29 // --------------------------------------------------------------
 30 //
 31 // Code developed by:
 32 // S.Guatelli
 33 //
 34 //    ********************************************
 35 //    *                                          *
 36 //    *    BrachyPrimaryGeneratorAction.cc       *
 37 //    *                                          *
 38 //    ********************************************
 39 //
 40 //
 41 
 42 #include "globals.hh"
 43 
 44 #include "BrachyPrimaryGeneratorAction.hh"
 45 #include "Randomize.hh"  
 46 #include "G4AnalysisManager.hh"
 47 #include "G4Event.hh"
 48 #include "G4GeneralParticleSource.hh"
 49 #include "G4RunManager.hh"
 50 #include "G4SystemOfUnits.hh"
 51 
 52 BrachyPrimaryGeneratorAction::BrachyPrimaryGeneratorAction()
 53 {
 54 // Use the GPS to generate primary particles,
 55 // Particle type, energy position, direction are specified in 
 56 // macro files
 57  fGun = new G4GeneralParticleSource();
 58 }
 59 
 60 BrachyPrimaryGeneratorAction::~BrachyPrimaryGeneratorAction()
 61 {
 62 delete fGun;
 63 }
 64 
 65 void BrachyPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 66 {
 67  fGun -> GeneratePrimaryVertex(anEvent);
 68 
 69  if (fGun -> GetParticleDefinition()-> GetParticleName()== "gamma")
 70  { 
 71   auto analysisManager = G4AnalysisManager::Instance();
 72   G4double energy = fGun -> GetParticleEnergy();
 73   // Fill histogram with the energy spectrum of 
 74   // the photons emitted by the radionuclide
 75   // when modelling the photons as primary particles (not via radioactive decay)
 76    analysisManager -> FillH1(0, energy/keV);
 77  }
 78 }
 79 
 80 
 81