Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/advanced/gorad/src/GRPrimaryGeneratorAction.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 //  Gorad (Geant4 Open-source Radiation Analysis and Design)
 27 //
 28 //  Author : Makoto Asai (SLAC National Accelerator Laboratory)
 29 //
 30 //  Development of Gorad is funded by NASA Johnson Space Center (JSC)
 31 //  under the contract NNJ15HK11B.
 32 //
 33 // ********************************************************************
 34 //
 35 // GRPrimaryGeneratorAction.cc
 36 //   Gorad primary generator action class
 37 //
 38 // History
 39 //   September 8th, 2020 : first implementation
 40 //
 41 // ********************************************************************
 42 
 43 #include "GRPrimaryGeneratorAction.hh"
 44 
 45 #include "G4Event.hh"
 46 #include "G4ParticleGun.hh"
 47 #include "G4GeneralParticleSource.hh"
 48 #include "G4ParticleTable.hh"
 49 #include "G4ParticleDefinition.hh"
 50 #include "G4SystemOfUnits.hh"
 51 #include "Randomize.hh"
 52 
 53 GRPrimaryGeneratorAction::GRPrimaryGeneratorAction(
 54              G4bool useParticleGun, G4bool useParticleSource)
 55 : G4VUserPrimaryGeneratorAction(),
 56   fParticleGun(nullptr), fParticleSource(nullptr)     
 57 {
 58   if(useParticleGun)
 59   {
 60     fParticleGun  = new G4ParticleGun(1);
 61   
 62     auto particleTable = G4ParticleTable::GetParticleTable();
 63     auto fPion = particleTable->FindParticle("pi+");
 64     fParticleGun->SetParticleDefinition(fPion);
 65   
 66     // default particle kinematics
 67     fParticleGun->SetParticlePosition(G4ThreeVector(0.,0.,0.));
 68     fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
 69     fParticleGun->SetParticleEnergy(1.*GeV);
 70   }
 71 
 72   if(useParticleSource)
 73   { fParticleSource = new G4GeneralParticleSource(); }
 74 }
 75 
 76 GRPrimaryGeneratorAction::~GRPrimaryGeneratorAction()
 77 {
 78   if(fParticleGun) delete fParticleGun;
 79   if(fParticleSource) delete fParticleSource;
 80 }
 81 
 82 void GRPrimaryGeneratorAction::GeneratePrimaries(G4Event* event)
 83 {
 84   if(fParticleGun) fParticleGun->GeneratePrimaryVertex(event);
 85   if(fParticleSource) fParticleSource->GeneratePrimaryVertex(event);
 86 }
 87 
 88