Gabriele Cosmo
114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/// \file geometry/VecGeomNavigation/src/VG01PrimaryGeneratorAction.cc
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/// \brief Implementation of the VG01PrimaryGeneratorAction class
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//
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// Authors: J. Apostolakis & S. Wenzel (CERN) 2018-2021
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//
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// Started from FullCMS code by Mihaly Novak (CERN) 2017
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#include "VG01PrimaryGeneratorAction.hh"
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#include "G4Event.hh"
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#include "G4ParticleGun.hh"
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#include "G4ParticleTable.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4RandomDirection.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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VG01PrimaryGeneratorAction::VG01PrimaryGeneratorAction( EGeneratorMode mode )
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: G4VUserPrimaryGeneratorAction(),
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fParticleGun(0),
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fMode(mode)
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{
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G4int n_particle = 1;
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fParticleGun = new G4ParticleGun(n_particle);
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G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
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G4String particleName;
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fParticleGun->SetParticleDefinition(
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particleTable->FindParticle(particleName="geantino"));
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fParticleGun->SetParticleEnergy(1.0*GeV);
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fParticleGun->SetParticlePosition(G4ThreeVector(0,0,0) ); // -1.2*m, 0.1, 0.1));
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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VG01PrimaryGeneratorAction::~VG01PrimaryGeneratorAction()
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{
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delete fParticleGun;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void VG01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
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{
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G4ThreeVector dir(1.0,0.0,0.0);
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// G4ThreeVector FixedMode[3] =
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// { G4ThreeVector(1,0,0), G4ThreeVector(1,0.1,0), G4ThreeVector( 1, 0, 0.1)};
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G4ThreeVector AxisModeVectors[3] =
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{ G4ThreeVector(1,0,0), G4ThreeVector(0,1,0), G4ThreeVector( 0, 0, 1.0)};
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if( fMode == kFreeMode ){
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// Do not fix the direction
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// -- UI commands to particle mode can change it!
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fParticleGun->GeneratePrimaryVertex(anEvent);
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return;
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//----
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}
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else if( fMode == kFixedMode )
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{
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G4int i = anEvent->GetEventID() % 3;
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dir= G4ThreeVector(1.0,0.0,0.0);
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switch(i)
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{
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case 0:
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break;
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case 1:
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dir.setY(0.1);
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break;
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case 2:
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dir.setZ(0.1);
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break;
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}
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}
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else if( fMode == kUniformMode )
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{
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dir = G4RandomDirection();
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}
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else if ( fMode == kAxisMode )
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{
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G4int i = anEvent->GetEventID() % 3;
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dir = AxisModeVectors[i];
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}
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fParticleGun->SetParticleMomentumDirection(dir);
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fParticleGun->GeneratePrimaryVertex(anEvent);
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}
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