ExTGPrimaryGeneratorAction.cc

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// $Id: ExTGPrimaryGeneratorAction.cc 76943 2013-11-19 09:57:34Z gcosmo $
//
/// \file persistency/P03/src/ExTGPrimaryGeneratorAction.cc
/// \brief Implementation of the ExTGPrimaryGeneratorAction class

#include "ExTGPrimaryGeneratorAction.hh"
#include "G4Event.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "globals.hh"
#include "G4SystemOfUnits.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
ExTGPrimaryGeneratorAction::ExTGPrimaryGeneratorAction()
{
  G4int n_particle = 1;
  fParticleGun = new G4ParticleGun(n_particle);

// default particle

  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4ParticleDefinition* particle = particleTable->FindParticle("e-");
  
  fParticleGun->SetParticleDefinition(particle);
  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
  fParticleGun->SetParticleEnergy(10*MeV);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
ExTGPrimaryGeneratorAction::~ExTGPrimaryGeneratorAction()
{
  delete fParticleGun;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void ExTGPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{ 
  fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm));
  
  fParticleGun->GeneratePrimaryVertex(anEvent);
}