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/// \file runAndEvent/RE02/src/RE02PrimaryGeneratorAction.cc
/// \brief Implementation of the RE02PrimaryGeneratorAction class
//
//
//

#include "RE02PrimaryGeneratorAction.hh"

#include "G4Event.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "Randomize.hh"
#include "globals.hh"
#include "G4SystemOfUnits.hh"    
#include "G4IonTable.hh"
#include "G4Geantino.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
//
RE02PrimaryGeneratorAction::RE02PrimaryGeneratorAction()
   
{
   G4int n_particle = 1;
  fParticleGun = new G4ParticleGun(n_particle);
//
  //fParticleGun->SetParticleEnergy(0 * eV);
  //fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
  //fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));

// default particle
 // G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
 //G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
 // G4ParticleDefinition* particle = particleTable->FindParticle("neutron");
 //G4ParticleDefinition* particle = particleTable->GetIon(6,12,0.);

//
// default beam position
 // G4double position = -200./2.*cm;
//
// Initial beam spot size in sigma.; This is not a part of ParticleGun.
 // fSigmaPosition = 10.* mm;

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
//
  //fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm, 0.*cm, position));
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
//
RE02PrimaryGeneratorAction::~RE02PrimaryGeneratorAction()
{
  delete fParticleGun;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
//
void RE02PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{ 
  //if (fParticleGun->GetParticleDefinition() == G4Geantino::Geantino()) {
              
 G4ParticleDefinition* particle = G4IonTable::GetIonTable()->GetIon(6, 12, 0.);
  fParticleGun->SetParticleCharge(6.);
  fParticleGun->SetParticleDefinition(particle);
  //G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
 // G4ParticleDefinition* particle = particleTable->FindParticle("neutron");

  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.0,0.0,1.));
  fParticleGun->SetParticleEnergy(4.8*GeV);

 // fParticleGun->SetParticleEnergy(100*MeV);
  //  }
  fParticleGun->SetParticlePosition(G4ThreeVector(0*cm,0*cm,-100.*cm));
  fParticleGun->GeneratePrimaryVertex(anEvent);
}