ExP02PrimaryGeneratorAction.cc

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// $Id: ExP02PrimaryGeneratorAction.cc 71727 2013-06-21 07:55:45Z gcosmo $
//
#include "ExP02PrimaryGeneratorAction.hh"

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

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ExP02PrimaryGeneratorAction::ExP02PrimaryGeneratorAction()
 : G4VUserPrimaryGeneratorAction(),
   fParticleGun(0)
   
{
  G4int n_particle = 1;
  fParticleGun = new G4ParticleGun(n_particle);

  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4String particleName;
  //    particleGun->SetParticleDefinition(particleTable->FindParticle(particleName="pi+"));
  fParticleGun->SetParticleDefinition(particleTable->FindParticle(particleName="geantino"));
  fParticleGun->SetParticleEnergy(1.0*GeV);
  fParticleGun->SetParticlePosition(G4ThreeVector(0.0, 0.0, 0.0));
}

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ExP02PrimaryGeneratorAction::~ExP02PrimaryGeneratorAction()
{
  delete fParticleGun;
}

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void ExP02PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  G4ThreeVector v(1.0,0.1,0.1);

  fParticleGun->SetParticleMomentumDirection(v);
  fParticleGun->GeneratePrimaryVertex(anEvent);
}

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