Geant4 Cross Reference

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Geant4/examples/extended/parallel/ThreadsafeScorers/src/TSPrimaryGeneratorAction.cc

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 25 //
 26 /// \file parallel/ThreadsafeScorers/src/TSPrimaryGeneratorAction.cc
 27 /// \brief Implementation of the TSPrimaryGeneratorAction class
 28 //
 29 //
 30 //
 31 //
 32 /// Simple PrimaryGeneratorAction that produces a -Z surface flux of 1 MeV
 33 ///     neutrons into the world
 34 //
 35 //
 36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 37 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 38 
 39 #include "TSPrimaryGeneratorAction.hh"
 40 
 41 #include "TSDetectorConstruction.hh"
 42 
 43 #include "G4Event.hh"
 44 #include "G4ParticleDefinition.hh"
 45 #include "G4ParticleGun.hh"
 46 #include "G4ParticleTable.hh"
 47 #include "G4RunManager.hh"
 48 
 49 using namespace CLHEP;
 50 
 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 52 
 53 TSPrimaryGeneratorAction::TSPrimaryGeneratorAction()
 54 {
 55   fGun = new G4ParticleGun(1);
 56 
 57   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
 58   G4String particleName;
 59   G4ParticleDefinition* particle = particleTable->FindParticle(particleName = "neutron");
 60 
 61   fGun->SetParticleDefinition(particle);
 62   fGun->SetParticleEnergy(1. * MeV);
 63 }
 64 
 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 66 
 67 TSPrimaryGeneratorAction::~TSPrimaryGeneratorAction()
 68 {
 69   delete fGun;
 70 }
 71 
 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 73 
 74 void TSPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 75 {
 76   static TSDetectorConstruction* detector = TSDetectorConstruction::Instance();
 77 
 78   G4ThreeVector dir(0., 0., 1.);
 79   G4ThreeVector pos(detector->GetWorldDimensions().x() * (G4UniformRand() - 0.5),
 80                     detector->GetWorldDimensions().y() * (G4UniformRand() - 0.5),
 81                     -0.5 * detector->GetWorldDimensions().z());
 82 
 83   dir /= dir.mag();
 84   fGun->SetParticleMomentumDirection(dir);
 85   fGun->SetParticlePosition(pos);
 86   fGun->GeneratePrimaryVertex(anEvent);
 87 }
 88 
 89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 90