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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 electromagnetic/TestEm15/src/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 "G4ParticleDefinition.hh" 39 #include "G4ParticleTable.hh" 40 #include "G4SystemOfUnits.hh" 41 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 43 44 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det) 45 : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fDetector(det) 46 { 47 fParticleGun = new G4ParticleGun(1); 48 G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-"); 49 fParticleGun->SetParticleDefinition(particle); 50 fParticleGun->SetParticleEnergy(1 * MeV); 51 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1., 0., 0.)); 52 } 53 54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 55 56 PrimaryGeneratorAction::~PrimaryGeneratorAction() 57 { 58 delete fParticleGun; 59 } 60 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 62 63 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) 64 { 65 // this function is called at the begining of event 66 // 67 G4double halfSize = 0.5 * (fDetector->GetWorldSize()); 68 G4double x0 = -halfSize; 69 70 fParticleGun->SetParticlePosition(G4ThreeVector(x0, 0., 0.)); 71 fParticleGun->GeneratePrimaryVertex(anEvent); 72 } 73 74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 75