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geant4/examples/novice/N01/src/ExN01PrimaryGeneratorAction.cc
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2016-06-09 10:28:22 +02:00

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//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * 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. *
// * *
// * This code implementation is the intellectual property of the *
// * GEANT4 collaboration. *
// * By copying, distributing or modifying the Program (or any work *
// * based on the Program) you indicate your acceptance of this *
// * statement, and all its terms. *
// ********************************************************************
//
//
// $Id: ExN01PrimaryGeneratorAction.cc,v 1.5 2002/05/14 01:50:31 asaim Exp $
// GEANT4 tag $Name: geant4-05-02 $
//
#include "ExN01PrimaryGeneratorAction.hh"
#include "G4Event.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "globals.hh"
ExN01PrimaryGeneratorAction::ExN01PrimaryGeneratorAction()
{
G4int n_particle = 1;
particleGun = new G4ParticleGun(n_particle);
G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
G4String particleName;
particleGun->SetParticleDefinition(particleTable->FindParticle(particleName="geantino"));
particleGun->SetParticleEnergy(1.0*GeV);
particleGun->SetParticlePosition(G4ThreeVector(-2.0*m, 0.0, 0.0));
}
ExN01PrimaryGeneratorAction::~ExN01PrimaryGeneratorAction()
{
delete particleGun;
}
void ExN01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
G4int i = anEvent->GetEventID() % 3;
G4ThreeVector v(1.0,0.0,0.0);
switch(i)
{
case 0:
break;
case 1:
v.setY(0.1);
break;
case 2:
v.setZ(0.1);
break;
}
particleGun->SetParticleMomentumDirection(v);
particleGun->GeneratePrimaryVertex(anEvent);
}