Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/extended/hadronic/NeutronSource/src/PrimaryGeneratorAction.cc

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ] 

  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  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 /// \file PrimaryGeneratorAction.cc
 27 /// \brief Implementation of the PrimaryGeneratorAction class
 28 //
 29 //
 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 
 33 #include "PrimaryGeneratorAction.hh"
 34 
 35 #include "DetectorConstruction.hh"
 36 
 37 #include "G4Event.hh"
 38 #include "G4Geantino.hh"
 39 #include "G4IonTable.hh"
 40 #include "G4ParticleDefinition.hh"
 41 #include "G4ParticleTable.hh"
 42 #include "G4PhysicalConstants.hh"
 43 #include "G4SystemOfUnits.hh"
 44 #include "Randomize.hh"
 45 
 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 47 
 48 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det) : fDetector(det)
 49 {
 50   G4int n_particle = 1;
 51   fParticleGun = new G4ParticleGun(n_particle);
 52 
 53   fParticleGun->SetParticleEnergy(0 * eV);
 54   fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
 55   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));
 56 }
 57 
 58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 59 
 60 PrimaryGeneratorAction::~PrimaryGeneratorAction()
 61 {
 62   delete fParticleGun;
 63 }
 64 
 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 66 
 67 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 68 {
 69   // particle type
 70   if (fParticleGun->GetParticleDefinition() == G4Geantino::Geantino()) {
 71     G4int Z = 95, A = 241;
 72     G4double ionCharge = 0. * eplus;
 73     G4double excitEnergy = 0. * keV;
 74 
 75     G4ParticleDefinition* ion = G4IonTable::GetIonTable()->GetIon(Z, A, excitEnergy);
 76     fParticleGun->SetParticleDefinition(ion);
 77     fParticleGun->SetParticleCharge(ionCharge);
 78   }
 79 
 80   // vertex position uniform within the absorber
 81   //
 82   G4double Rmax = fDetector->GetAbsorRadius();
 83   G4double Rmax2 = Rmax * Rmax;
 84   G4double R2 = G4UniformRand() * Rmax2;
 85   G4double R = std::sqrt(R2);
 86 
 87   G4double phi = twopi * G4UniformRand();
 88   G4double ux = R * std::cos(phi), uy = R * std::sin(phi);
 89   G4double uz = (fDetector->GetAbsorLength()) * (G4UniformRand() - 0.5);
 90 
 91   fParticleGun->SetParticlePosition(G4ThreeVector(ux, uy, uz));
 92 
 93   // distribution uniform in solid angle
 94   //
 95   G4double cosTheta = 2 * G4UniformRand() - 1.;
 96   G4double sinTheta = std::sqrt(1. - cosTheta * cosTheta);
 97   phi = twopi * G4UniformRand();
 98   G4double vx = sinTheta * std::cos(phi), vy = sinTheta * std::sin(phi), vz = cosTheta;
 99 
100   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(vx, vy, vz));
101 
102   fParticleGun->GeneratePrimaryVertex(anEvent);
103 }
104 
105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
106