// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * 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. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // /// \file PrimaryGeneratorAction.cc /// \brief Implementation of the PrimaryGeneratorAction class // // // $Id: PrimaryGeneratorAction.cc 67268 2013-02-13 11:38:40Z ihrivnac $ // // //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... #include "PrimaryGeneratorAction.hh" #include "G4Event.hh" #include "G4ParticleTable.hh" #include "G4ParticleDefinition.hh" #include "G4PhysicalConstants.hh" #include "G4SystemOfUnits.hh" #include "Randomize.hh" //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction(),fParticleGun(0) { G4int n_particle = 1; fParticleGun = new G4ParticleGun(n_particle); // default particle kinematic G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("proton"); fParticleGun->SetParticleDefinition(particle); fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.)); fParticleGun->SetParticleEnergy(18*MeV); //fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm)); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... PrimaryGeneratorAction::~PrimaryGeneratorAction() { delete fParticleGun; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) { //this function is called at the begining of event // // G4double halfSize = 0.5*(fDetector->GetSize()); //G4double z0 = -0.04; //G4double z0 = -4.96; G4double z0 = -0.006; //randomize (y0,z0) // // G4double mean = 70.0; // G4double stdDev = 1; // G4double uGauss = G4RandGauss::shoot(mean, stdDev); G4double R = 0.6*G4UniformRand(); G4double phi = 2*pi*G4UniformRand(); //G4double En = uGauss; // G4double beam = 0.8*halfSize; G4double x0 = R * cos(phi); G4double y0 = R * sin(phi); fParticleGun->SetParticlePosition(G4ThreeVector(x0*cm, y0*cm, z0*cm)); //fParticleGun->SetParticleEnergy(En*MeV); fParticleGun->GeneratePrimaryVertex(anEvent); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......