| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // $Id: G4hPairProduction.cc,v 1.4 2009/02/20 16:38:33 vnivanch Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $
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| 28 | //
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| 29 | // -------------------------------------------------------------------
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| 30 | //
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| 31 | // GEANT4 Class file
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| 32 | //
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| 33 | //
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| 34 | // File name: G4hPairProduction
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| 35 | //
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| 36 | // Author: Vladimir Ivanchenko on base of model for muons
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| 37 | //
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| 38 | // Creation date: 01.03.2008
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| 39 | //
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| 40 | // Modifications:
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| 41 | //
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| 42 | //
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| 43 | // -------------------------------------------------------------------
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| 44 | //
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| 45 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 46 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 47 |
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| 48 | #include "G4hPairProduction.hh"
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| 49 | #include "G4Electron.hh"
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| 50 | #include "G4Positron.hh"
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| 51 | #include "G4hPairProductionModel.hh"
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| 52 | #include "G4UniversalFluctuation.hh"
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| 53 |
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| 54 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 55 |
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| 56 | using namespace std;
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| 57 |
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| 58 | G4hPairProduction::G4hPairProduction(const G4String& name)
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| 59 | : G4VEnergyLossProcess(name),
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| 60 | theParticle(0),
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| 61 | theBaseParticle(0),
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| 62 | lowestKinEnergy(1.*GeV),
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| 63 | isInitialised(false)
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| 64 | {
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| 65 | SetProcessSubType(fPairProdByCharged);
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| 66 | }
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| 67 |
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| 68 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 69 |
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| 70 | G4hPairProduction::~G4hPairProduction()
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| 71 | {}
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| 72 |
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| 73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 74 |
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| 75 | G4bool G4hPairProduction::IsApplicable(const G4ParticleDefinition& p)
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| 76 | {
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| 77 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 110.0*MeV);
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| 78 | }
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| 79 |
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| 80 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 81 |
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| 82 | G4double G4hPairProduction::MinPrimaryEnergy(const G4ParticleDefinition*,
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| 83 | const G4Material*,
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| 84 | G4double)
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| 85 | {
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| 86 | return lowestKinEnergy;
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| 87 | }
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| 88 |
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| 89 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 90 |
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| 91 | void G4hPairProduction::InitialiseEnergyLossProcess(
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| 92 | const G4ParticleDefinition* part,
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| 93 | const G4ParticleDefinition*)
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| 94 | {
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| 95 | if (!isInitialised) {
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| 96 | isInitialised = true;
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| 97 |
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| 98 | theParticle = part;
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| 99 | SetSecondaryParticle(G4Positron::Positron());
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| 100 | SetIonisation(false);
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| 101 |
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| 102 | G4hPairProductionModel* em = new G4hPairProductionModel();
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| 103 | em->SetLowestKineticEnergy(lowestKinEnergy);
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| 104 | G4VEmFluctuationModel* fm = new G4UniversalFluctuation();
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| 105 | em->SetLowEnergyLimit(0.1*keV);
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| 106 | em->SetHighEnergyLimit(100.0*TeV);
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| 107 | AddEmModel(1, em, fm);
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| 108 | }
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| 109 | }
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| 110 |
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| 111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 112 |
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| 113 | void G4hPairProduction::PrintInfo()
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| 114 | {}
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| 115 |
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| 116 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 117 |
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| 118 |
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| 119 |
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| 120 |
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