examples/extended/electromagnetic/TestEm8/src/PrimaryGeneratorAction.cc

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/// \file electromagnetic/TestEm8/src/PrimaryGeneratorAction.cc
/// \brief Implementation of the PrimaryGeneratorAction class
//
// $Id: PrimaryGeneratorAction.cc 67268 2013-02-13 11:38:40Z ihrivnac $
//
/////////////////////////////////////////////////////////////////////////
//
// TestEm8: Gaseous detector
//
// Created: 31.08.2010 V.Ivanchenko
//
// Modified:
//
////////////////////////////////////////////////////////////////////////
//

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#include "PrimaryGeneratorAction.hh"
#include "G4Event.hh"
#include "G4Electron.hh"
#include "G4SystemOfUnits.hh"

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PrimaryGeneratorAction::PrimaryGeneratorAction()
 : G4VUserPrimaryGeneratorAction(),
   fParticleGun(0)
{
  fParticleGun  = new G4ParticleGun(1);
  fParticleGun->SetParticleDefinition(G4Electron::Electron());
  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
  fParticleGun->SetParticleEnergy(1.*GeV);
}

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PrimaryGeneratorAction::~PrimaryGeneratorAction()
{
  delete fParticleGun;
}

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void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  if(0 == anEvent->GetEventID()) {
    G4cout << "### PrimaryGeneratorAction::GeneratePrimaries ##########" << G4endl;
    G4cout << "### " << fParticleGun->GetParticleDefinition()->GetParticleName()
           << "  E(MeV)= " << fParticleGun->GetParticleEnergy()/MeV << G4endl;
    G4cout << "########################################################"
           << G4endl;

  }
  fParticleGun->GeneratePrimaryVertex(anEvent);
}

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void PrimaryGeneratorAction::SetPositionZ(G4double z)
{
  fParticleGun->SetParticlePosition(G4ThreeVector(0.,0.,z));
}

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