[819] | 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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[1055] | 26 | // $Id: G4MuIonisation.cc,v 1.59 2009/02/26 11:04:20 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-03-beta-cand-01 $ |
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[819] | 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: G4MuIonisation |
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| 35 | // |
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| 36 | // Author: Laszlo Urban |
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| 37 | // |
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| 38 | // Creation date: 30.09.1997 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // |
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| 42 | // 08-04-98 remove 'tracking cut' of the ionizing particle (mma) |
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| 43 | // 26-10-98 new stuff from R.Kokoulin + cleanup , L.Urban |
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| 44 | // 10-02-00 modifications , new e.m. structure, L.Urban |
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| 45 | // 23-03-01 R.Kokoulin's correction is commented out, L.Urban |
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| 46 | // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation |
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| 47 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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| 48 | // 28-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) |
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| 49 | // 17-09-01 migration of Materials to pure STL (mma) |
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| 50 | // 26-09-01 completion of RetrievePhysicsTable (mma) |
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| 51 | // 29-10-01 all static functions no more inlined (mma) |
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| 52 | // 07-11-01 correction(Tmax+xsection computation) L.Urban |
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| 53 | // 08-11-01 particleMass becomes a local variable (mma) |
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| 54 | // 10-05-02 V.Ivanchenko update to new design |
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| 55 | // 04-12-02 V.Ivanchenko the low energy limit for Kokoulin model to 10 GeV |
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| 56 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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| 57 | // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) |
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| 58 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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| 59 | // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko) |
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| 60 | // 03-06-03 Add SetIntegral method to choose fluctuation model (V.Ivanchenko) |
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| 61 | // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) |
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| 62 | // 04-08-03 Set integral=false to be default (V.Ivanchenko) |
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| 63 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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| 64 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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| 65 | // 10-02-04 Calculation of radiative corrections using R.Kokoulin model (V.Ivanchenko) |
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| 66 | // 27-05-04 Set integral to be a default regime (V.Ivanchenko) |
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| 67 | // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko) |
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| 68 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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| 69 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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| 70 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma) |
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| 71 | // 02-09-05 SetStepLimits(0.2, 1*mm) (V.Ivantchenko) |
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| 72 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) + integral off (V.Ivantchenko) |
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| 73 | // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko) |
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| 74 | // |
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| 75 | // ------------------------------------------------------------------- |
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| 76 | // |
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| 77 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 78 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 79 | |
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| 80 | #include "G4MuIonisation.hh" |
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| 81 | #include "G4Electron.hh" |
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| 82 | #include "G4MuonPlus.hh" |
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| 83 | #include "G4MuonMinus.hh" |
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| 84 | #include "G4BraggModel.hh" |
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| 85 | #include "G4BetheBlochModel.hh" |
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| 86 | #include "G4MuBetheBlochModel.hh" |
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| 87 | #include "G4UniversalFluctuation.hh" |
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[1055] | 88 | #include "G4IonFluctuations.hh" |
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[819] | 89 | #include "G4BohrFluctuations.hh" |
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| 90 | #include "G4UnitsTable.hh" |
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| 91 | |
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| 92 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 93 | |
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| 94 | using namespace std; |
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| 95 | |
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| 96 | G4MuIonisation::G4MuIonisation(const G4String& name) |
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| 97 | : G4VEnergyLossProcess(name), |
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| 98 | theParticle(0), |
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| 99 | theBaseParticle(0), |
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| 100 | isInitialised(false) |
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| 101 | { |
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[961] | 102 | // SetStepFunction(0.2, 1*mm); |
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| 103 | //SetIntegral(true); |
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| 104 | //SetVerboseLevel(1); |
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| 105 | SetProcessSubType(fIonisation); |
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[819] | 106 | } |
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| 107 | |
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| 108 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 109 | |
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| 110 | G4MuIonisation::~G4MuIonisation() |
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| 111 | {} |
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| 112 | |
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| 113 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 114 | |
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[1055] | 115 | G4bool G4MuIonisation::IsApplicable(const G4ParticleDefinition& p) |
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| 116 | { |
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| 117 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV); |
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| 118 | } |
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| 119 | |
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| 120 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 121 | |
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| 122 | G4double G4MuIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, |
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| 123 | const G4Material*, |
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| 124 | G4double cut) |
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| 125 | { |
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| 126 | G4double x = 0.5*cut/electron_mass_c2; |
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| 127 | G4double g = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio)); |
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| 128 | return mass*(g - 1.0); |
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| 129 | } |
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| 130 | |
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| 131 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 132 | |
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[819] | 133 | void G4MuIonisation::InitialiseEnergyLossProcess(const G4ParticleDefinition* part, |
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| 134 | const G4ParticleDefinition* bpart) |
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| 135 | { |
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| 136 | if(!isInitialised) { |
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| 137 | |
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| 138 | theParticle = part; |
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| 139 | theBaseParticle = bpart; |
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| 140 | |
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| 141 | mass = theParticle->GetPDGMass(); |
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| 142 | SetSecondaryParticle(G4Electron::Electron()); |
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| 143 | |
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[1055] | 144 | // Bragg peak model |
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| 145 | if (!EmModel(1)) SetEmModel(new G4BraggModel(),1); |
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| 146 | EmModel(1)->SetLowEnergyLimit(MinKinEnergy()); |
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| 147 | EmModel(1)->SetHighEnergyLimit(0.2*MeV); |
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| 148 | AddEmModel(1, EmModel(1), new G4IonFluctuations()); |
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[819] | 149 | |
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[1055] | 150 | // high energy fluctuation model |
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| 151 | if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation()); |
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[819] | 152 | |
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[1055] | 153 | // moderate energy model |
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| 154 | if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2); |
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| 155 | EmModel(2)->SetLowEnergyLimit(0.2*MeV); |
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| 156 | EmModel(2)->SetHighEnergyLimit(1.0*GeV); |
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| 157 | AddEmModel(2, EmModel(2), FluctModel()); |
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| 158 | |
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| 159 | // high energy model |
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| 160 | if (!EmModel(3)) SetEmModel(new G4MuBetheBlochModel(),3); |
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| 161 | EmModel(3)->SetLowEnergyLimit(1.0*GeV); |
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| 162 | EmModel(3)->SetHighEnergyLimit(MaxKinEnergy()); |
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| 163 | AddEmModel(3, EmModel(3), FluctModel()); |
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| 164 | |
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[819] | 165 | ratio = electron_mass_c2/mass; |
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| 166 | isInitialised = true; |
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| 167 | } |
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| 168 | } |
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| 169 | |
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| 170 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 171 | |
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| 172 | void G4MuIonisation::PrintInfo() |
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[961] | 173 | {} |
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[819] | 174 | |
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| 175 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 176 | |
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| 177 | |
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| 178 | |
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| 179 | |
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