RE05PrimaryGeneratorAction.cc

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// $Id: RE05PrimaryGeneratorAction.cc 70214 2013-05-27 07:21:19Z gcosmo $
//
/// \file RE05/src/RE05PrimaryGeneratorAction.cc
/// \brief Implementation of the RE05PrimaryGeneratorAction class
//

#include "RE05PrimaryGeneratorAction.hh"
#include "RE05PrimaryGeneratorMessenger.hh"

#include "G4Event.hh"
#include "G4HEPEvtInterface.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4SystemOfUnits.hh"

G4VPrimaryGenerator* RE05PrimaryGeneratorAction::HEPEvt = 0;

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RE05PrimaryGeneratorAction::RE05PrimaryGeneratorAction()
{
  if(!HEPEvt)
  {
    const char* filename = "pythia_event.data";
    HEPEvt = new G4HEPEvtInterface(filename,2);
  }

  G4int n_particle = 1;
  G4ParticleGun* fParticleGun = new G4ParticleGun(n_particle);
  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4String particleName;
  G4ParticleDefinition* particle
    = particleTable->FindParticle(particleName="mu+");
  fParticleGun->SetParticleDefinition(particle);
  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,1.,0.));
  fParticleGun->SetParticleEnergy(100.*GeV);
  fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm));
  particleGun = fParticleGun;

  messenger = new RE05PrimaryGeneratorMessenger(this);
  useHEPEvt = true;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#include "G4AutoLock.hh"
namespace {
 G4Mutex RE05PrimGenDestrMutex = G4MUTEX_INITIALIZER; 
 G4Mutex RE05PrimGenMutex = G4MUTEX_INITIALIZER; 
}
RE05PrimaryGeneratorAction::~RE05PrimaryGeneratorAction()
{
  G4AutoLock lock(&RE05PrimGenDestrMutex);
  if(HEPEvt) { delete HEPEvt; HEPEvt=0; }
  delete particleGun;
  delete messenger;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void RE05PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  if(useHEPEvt)
  {
    G4AutoLock lock(&RE05PrimGenMutex);
    HEPEvt->GeneratePrimaryVertex(anEvent);
  }
  else
  { particleGun->GeneratePrimaryVertex(anEvent); }
}