Gabriele Cosmo
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: ExN03PrimaryGeneratorAction.cc,v 1.3 2000/11/21 10:59:45 maire Exp $
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// GEANT4 tag $Name: geant4-03-01 $
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//
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "ExN03PrimaryGeneratorAction.hh"
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#include "ExN03DetectorConstruction.hh"
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#include "ExN03PrimaryGeneratorMessenger.hh"
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#include "G4Event.hh"
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#include "G4ParticleGun.hh"
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#include "G4ParticleTable.hh"
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#include "G4ParticleDefinition.hh"
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#include "Randomize.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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ExN03PrimaryGeneratorAction::ExN03PrimaryGeneratorAction(
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ExN03DetectorConstruction* ExN03DC)
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:ExN03Detector(ExN03DC),rndmFlag("off")
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{
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G4int n_particle = 1;
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particleGun = new G4ParticleGun(n_particle);
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//create a messenger for this class
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gunMessenger = new ExN03PrimaryGeneratorMessenger(this);
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// default particle kinematic
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G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
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G4String particleName;
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G4ParticleDefinition* particle
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= particleTable->FindParticle(particleName="e-");
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particleGun->SetParticleDefinition(particle);
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particleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
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particleGun->SetParticleEnergy(50.*MeV);
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G4double position = -0.5*(ExN03Detector->GetWorldSizeX());
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particleGun->SetParticlePosition(G4ThreeVector(position,0.*cm,0.*cm));
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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ExN03PrimaryGeneratorAction::~ExN03PrimaryGeneratorAction()
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{
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delete particleGun;
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delete gunMessenger;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void ExN03PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
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{
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//this function is called at the begining of event
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//
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G4double x0 = -0.5*(ExN03Detector->GetWorldSizeX());
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G4double y0 = 0.*cm, z0 = 0.*cm;
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if (rndmFlag == "on")
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{y0 = (ExN03Detector->GetCalorSizeYZ())*(G4UniformRand()-0.5);
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z0 = (ExN03Detector->GetCalorSizeYZ())*(G4UniformRand()-0.5);
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}
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particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
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particleGun->GeneratePrimaryVertex(anEvent);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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