RE06PrimaryGeneratorAction.cc

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#include "RE06PrimaryGeneratorAction.hh"

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

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RE06PrimaryGeneratorAction::RE06PrimaryGeneratorAction()
 : G4VUserPrimaryGeneratorAction(),
   fParticleGun(0),
   fSerial(false)
{
  G4int n_particle = 1;
  fParticleGun  = new G4ParticleGun(n_particle);
  
  // default particle kinematic
  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4String particleName;
  G4ParticleDefinition* particle
                    = particleTable->FindParticle(particleName="mu-");
  fParticleGun->SetParticleDefinition(particle);
  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
  fParticleGun->SetParticleEnergy(100.*GeV);
}

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RE06PrimaryGeneratorAction::~RE06PrimaryGeneratorAction()
{
  delete fParticleGun;
}

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void RE06PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  if(fSerial)
  {
    fParticleGun->SetParticlePosition(G4ThreeVector(0.,0.,-3.5*m));
    fParticleGun->GeneratePrimaryVertex(anEvent);
  }
  else
  {
    for(G4int i=0;i<3;i++)
    {
      fParticleGun
        ->SetParticlePosition(G4ThreeVector(0.,G4double(i-1)*m,-1.5*m));
      fParticleGun->GeneratePrimaryVertex(anEvent);
    }
  }
}

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