GunPrimaryGeneratorAction.cc

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/// \file common/src/GunPrimaryGeneratorAction.cc
/// \brief Implementation of the Common::GunPrimaryGeneratorAction class
 
#include "GunPrimaryGeneratorAction.hh"
 
#include "G4Event.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
 
namespace Common
{
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
GunPrimaryGeneratorAction::GunPrimaryGeneratorAction(
                                const G4String& particleName,
                                G4double energy,
                                G4ThreeVector position,
                                G4ThreeVector momentumDirection)
{
  G4int nofParticles = 1;
  fParticleGun  = new G4ParticleGun(nofParticles);
 
  // default particle kinematic
  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4ParticleDefinition* particle
    = particleTable->FindParticle(particleName);
  fParticleGun->SetParticleDefinition(particle);
  fParticleGun->SetParticleEnergy(energy);
  fParticleGun->SetParticlePosition(position);
  fParticleGun->SetParticleMomentumDirection(momentumDirection);
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
GunPrimaryGeneratorAction::~GunPrimaryGeneratorAction()
{
  delete fParticleGun;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void GunPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  // this function is called at the begining of event
 
  fParticleGun->GeneratePrimaryVertex(anEvent);
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
}