RE05PrimaryGeneratorAction.cc

Go to the documentation of this file.

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// $Id: RE05PrimaryGeneratorAction.cc 105205 2017-07-14 12:25:10Z gcosmo $
//
//

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

#include "G4Event.hh"
#include "G4HEPEvtInterface.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4SystemOfUnits.hh"
#include "G4AutoLock.hh"

namespace {
 G4Mutex RE05PrimGenDestrMutex = G4MUTEX_INITIALIZER; 
 G4Mutex RE05PrimGenMutex = G4MUTEX_INITIALIZER; 
}

G4VPrimaryGenerator* RE05PrimaryGeneratorAction::fHEPEvt = 0;

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

RE05PrimaryGeneratorAction::RE05PrimaryGeneratorAction()
: G4VUserPrimaryGeneratorAction(),
  fParticleGun(0), 
  fMessenger(0),
  fUseHEPEvt(false)
{
  G4AutoLock lock(&RE05PrimGenDestrMutex);
  if(!fHEPEvt)
  {
    const char* filename = "pythia_event.data";
    fHEPEvt = new G4HEPEvtInterface(filename,1);
  }
  lock.unlock();

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

  fMessenger = new RE05PrimaryGeneratorMessenger(this);
  fUseHEPEvt = true;
}

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

RE05PrimaryGeneratorAction::~RE05PrimaryGeneratorAction()
{
  G4AutoLock lock(&RE05PrimGenDestrMutex);
  if(fHEPEvt) { delete fHEPEvt; fHEPEvt=0; }
  delete fParticleGun;
  delete fMessenger;
}

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

void RE05PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  if(fUseHEPEvt)
  {
    G4AutoLock lock(&RE05PrimGenMutex);
    fHEPEvt->GeneratePrimaryVertex(anEvent);
  }
  else
  { fParticleGun->GeneratePrimaryVertex(anEvent); }
}

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