TestEm9/src/PrimaryGeneratorAction.cc

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0026 /// \file electromagnetic/TestEm9/src/PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028 //
0029 //
0030 //
0031 /////////////////////////////////////////////////////////////////////////
0032 //
0033 // TestEm9: Crystal calorimeter
0034 //
0035 // Created: 31.01.03 V.Ivanchenko
0036 //
0037 // Modified:
0038 //
0039 ////////////////////////////////////////////////////////////////////////
0040 //
0041
0042 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0043 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0044
0045 #include "PrimaryGeneratorAction.hh"
0046
0047 #include "DetectorConstruction.hh"
0048 #include "HistoManager.hh"
0049
0050 #include "G4Electron.hh"
0051 #include "G4Event.hh"
0052 #include "G4ParticleTable.hh"
0053 #include "G4SystemOfUnits.hh"
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0056
0057 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det)
0058   : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fDetector(det)
0059 {
0060   fParticleGun = new G4ParticleGun(1);
0061   fParticleGun->SetParticleDefinition(G4Electron::Electron());
0062   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));
0063   fParticleGun->SetParticleEnergy(1. * GeV);
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0069 {
0070   delete fParticleGun;
0071 }
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0074
0075 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0076 {
0077   if (anEvent->GetEventID() == 0) {
0078     G4double zVertex = -(fDetector->GetWorldSizeZ());
0079     fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., zVertex));
0080     (HistoManager::GetPointer())->SetBeamEnergy(fParticleGun->GetParticleEnergy());
0081     G4cout << "### PrimaryGeneratorAction::GeneratePrimaries ##########" << G4endl;
0082     G4cout << "### " << fParticleGun->GetParticleDefinition()->GetParticleName()
0083            << "  E(MeV)= " << fParticleGun->GetParticleEnergy() / MeV << G4endl;
0084     G4cout << "########################################################" << G4endl;
0085   }
0086   fParticleGun->GeneratePrimaryVertex(anEvent);
0087 }
0088
0089 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......