range/src/PrimaryGeneratorAction.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // This example is provided by the Geant4-DNA collaboration
0027 // Any report or published results obtained using the Geant4-DNA software
0028 // shall cite the following Geant4-DNA collaboration publications:
0029 // Med. Phys. 45 (2018) e722-e739
0030 // Phys. Med. 31 (2015) 861-874
0031 // Med. Phys. 37 (2010) 4692-4708
0032 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0033 //
0034 // The Geant4-DNA web site is available at http://geant4-dna.org
0035 //
0036 /// \file medical/dna/range/src/PrimaryGeneratorAction.cc
0037 /// \brief Implementation of the PrimaryGeneratorAction class
0038
0039 #include "PrimaryGeneratorAction.hh"
0040
0041 #include "DetectorConstruction.hh"
0042
0043 #include "G4RandomDirection.hh"
0044 #include "G4RunManager.hh"
0045 #include "G4StateManager.hh"
0046 #include "G4SystemOfUnits.hh"
0047
0048 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0049
0050 PrimaryGeneratorAction::PrimaryGeneratorAction()
0051   : G4VUserPrimaryGeneratorAction(), G4VStateDependent(), fParticleGun(0), fDetector(0)
0052 {
0053   fDetector = dynamic_cast<const DetectorConstruction*>(
0054     G4RunManager::GetRunManager()->GetUserDetectorConstruction());
0055 }
0056
0057 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0058
0059 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0060 {
0061   G4StateManager::GetStateManager()->DeregisterDependent(this);
0062   if (fParticleGun) delete fParticleGun;
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0068 {
0069   fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
0070   fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0071   fParticleGun->GeneratePrimaryVertex(anEvent);
0072 }
0073
0074 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0075
0076 G4bool PrimaryGeneratorAction::Notify(G4ApplicationState requestedState)
0077 {
0078   if (requestedState == G4State_Idle) {
0079     if (fParticleGun != 0) return true;
0080
0081     fParticleGun = new G4ParticleGun(1);
0082
0083     // Define default primary
0084     G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-");
0085     fParticleGun->SetParticleDefinition(particle);
0086     fParticleGun->SetParticleEnergy(10 * eV);
0087     fParticleGun->SetParticlePosition(G4ThreeVector());
0088     fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1, 0, 0));
0089   }
0090
0091   return true;
0092 }