Geant4 Cross Reference

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Geant4/examples/extended/exoticphysics/monopole/src/PrimaryGeneratorAction.cc

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 25 //
 26 /// \file exoticphysics/monopole/src/PrimaryGeneratorAction.cc
 27 /// \brief Implementation of the PrimaryGeneratorAction class
 28 //
 29 //
 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 
 33 #include "PrimaryGeneratorAction.hh"
 34 
 35 #include "DetectorConstruction.hh"
 36 
 37 #include "G4Event.hh"
 38 #include "G4ParticleDefinition.hh"
 39 #include "G4ParticleGun.hh"
 40 #include "G4SystemOfUnits.hh"
 41 
 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 43 
 44 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det)
 45   : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fDetector(det), fPrimPositionDefined(false)
 46 {
 47   fParticleGun = new G4ParticleGun(1);
 48   fParticleGun->SetParticleEnergy(100 * GeV);
 49   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1., 0., 0.));
 50 }
 51 
 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 53 
 54 PrimaryGeneratorAction::~PrimaryGeneratorAction()
 55 {
 56   delete fParticleGun;
 57 }
 58 
 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 60 
 61 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 62 {
 63   // this function is called at the begining of event
 64   if (0 == anEvent->GetEventID() || !fPrimPositionDefined) {
 65     G4double x0 = -0.5 * (fDetector->GetWorldSizeX()) + 1 * um;
 66     fParticleGun->SetParticlePosition(G4ThreeVector(x0, 0.0, 0.0));
 67     fPrimPositionDefined = true;
 68   }
 69 
 70   fParticleGun->GeneratePrimaryVertex(anEvent);
 71 }
 72 
 73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 74