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: G4hIonisation.cc,v 1.82 2009/02/20 12:06:37 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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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: G4hIonisation |
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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: 30.05.1997 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // corrected by L.Urban on 24/09/97 |
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43 | // several bugs corrected by L.Urban on 13/01/98 |
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44 | // 07-04-98 remove 'tracking cut' of the ionizing particle, mma |
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45 | // 22-10-98 cleanup L.Urban |
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46 | // 02-02-99 bugs fixed , L.Urban |
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47 | // 29-07-99 correction in BuildLossTable for low energy, L.Urban |
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48 | // 10-02-00 modifications , new e.m. structure, L.Urban |
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49 | // 10-08-00 V.Ivanchenko change BuildLambdaTable, in order to |
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50 | // simulate energy losses of ions; correction to |
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51 | // cross section for particles with spin 1 is inserted as well |
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52 | // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation |
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53 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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54 | // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) |
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55 | // 29-08-01 PostStepDoIt: correction for spin 1/2 (instead of 1) (mma) |
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56 | // 17-09-01 migration of Materials to pure STL (mma) |
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57 | // 25-09-01 completion of RetrievePhysicsTable() (mma) |
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58 | // 29-10-01 all static functions no more inlined |
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59 | // 08-11-01 Charge renamed zparticle; added to the dedx |
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60 | // 27-03-02 Bug fix in scaling of lambda table (V.Ivanchenko) |
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61 | // 09-04-02 Update calculation of tables for GenericIons (V.Ivanchenko) |
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62 | // 30-04-02 V.Ivanchenko update to new design |
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63 | // 04-12-02 Add verbose level definition (VI) |
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64 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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65 | // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) |
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66 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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67 | // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko) |
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68 | // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) |
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69 | // 04-08-03 Set integral=false to be default (V.Ivanchenko) |
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70 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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71 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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72 | // 27-05-04 Set integral to be a default regime (V.Ivanchenko) |
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73 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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74 | // 24-03-05 Optimize internal interfaces (V.Ivantchenko) |
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75 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma) |
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76 | // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivanchenko) |
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77 | // 26-05-06 scale negative particles from pi- and pbar, |
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78 | // positive from pi+ and p (VI) |
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79 | // 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma) |
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80 | // 12-09-08 Removed CorrectionsAlongStep (VI) |
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81 | // |
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82 | // ------------------------------------------------------------------- |
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83 | // |
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84 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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85 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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86 | |
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87 | #include "G4hIonisation.hh" |
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88 | #include "G4Electron.hh" |
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89 | #include "G4Proton.hh" |
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90 | #include "G4AntiProton.hh" |
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91 | #include "G4BraggModel.hh" |
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92 | #include "G4BetheBlochModel.hh" |
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93 | #include "G4IonFluctuations.hh" |
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94 | #include "G4UniversalFluctuation.hh" |
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95 | #include "G4BohrFluctuations.hh" |
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96 | #include "G4UnitsTable.hh" |
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97 | #include "G4PionPlus.hh" |
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98 | #include "G4PionMinus.hh" |
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99 | #include "G4KaonPlus.hh" |
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100 | #include "G4KaonMinus.hh" |
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101 | |
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102 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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103 | |
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104 | using namespace std; |
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105 | |
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106 | G4hIonisation::G4hIonisation(const G4String& name) |
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107 | : G4VEnergyLossProcess(name), |
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108 | isInitialised(false), |
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109 | nuclearStopping(true) |
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110 | { |
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111 | // SetStepFunction(0.2, 1.0*mm); |
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112 | //SetIntegral(true); |
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113 | //SetVerboseLevel(1); |
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114 | SetProcessSubType(fIonisation); |
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115 | mass = 0.0; |
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116 | ratio = 0.0; |
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117 | } |
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118 | |
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119 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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120 | |
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121 | G4hIonisation::~G4hIonisation() |
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122 | {} |
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123 | |
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124 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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125 | |
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126 | G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p) |
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127 | { |
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128 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV && |
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129 | !p.IsShortLived()); |
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130 | } |
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131 | |
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132 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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133 | |
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134 | G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, |
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135 | const G4Material*, |
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136 | G4double cut) |
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137 | { |
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138 | G4double x = 0.5*cut/electron_mass_c2; |
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139 | G4double g = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio)); |
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140 | return mass*(g - 1.0); |
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141 | } |
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142 | |
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143 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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144 | |
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145 | void G4hIonisation::InitialiseEnergyLossProcess( |
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146 | const G4ParticleDefinition* part, |
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147 | const G4ParticleDefinition* bpart) |
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148 | { |
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149 | if(!isInitialised) { |
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150 | |
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151 | const G4ParticleDefinition* theBaseParticle = 0; |
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152 | G4String pname = part->GetParticleName(); |
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153 | |
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154 | // standard base particles |
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155 | if(part == bpart || pname == "proton" || |
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156 | pname == "anti_proton" || |
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157 | pname == "pi+" || pname == "pi-" || |
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158 | pname == "kaon+" || pname == "kaon-") |
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159 | { |
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160 | theBaseParticle = 0; |
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161 | } |
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162 | // select base particle |
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163 | else if(bpart == 0) { |
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164 | |
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165 | if(part->GetPDGSpin() == 0.0) |
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166 | if(part->GetPDGCharge() > 0.0 ) { |
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167 | theBaseParticle = G4KaonPlus::KaonPlus(); |
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168 | } else { |
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169 | theBaseParticle = G4KaonMinus::KaonMinus(); |
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170 | } |
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171 | else if(part->GetPDGCharge() > 0.0) { |
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172 | theBaseParticle = G4Proton::Proton(); |
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173 | } else { |
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174 | theBaseParticle = G4AntiProton::AntiProton(); |
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175 | } |
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176 | // base particle defined by interface |
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177 | } else { |
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178 | theBaseParticle = bpart; |
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179 | } |
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180 | SetBaseParticle(theBaseParticle); |
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181 | SetSecondaryParticle(G4Electron::Electron()); |
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182 | |
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183 | mass = part->GetPDGMass(); |
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184 | ratio = electron_mass_c2/mass; |
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185 | |
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186 | if(mass < 900.*MeV) nuclearStopping = false; |
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187 | |
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188 | if (!EmModel(1)) SetEmModel(new G4BraggModel(),1); |
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189 | EmModel(1)->SetLowEnergyLimit(MinKinEnergy()); |
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190 | |
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191 | // model limit defined for protons |
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192 | eth = (EmModel(1)->HighEnergyLimit())*mass/proton_mass_c2; |
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193 | EmModel(1)->SetHighEnergyLimit(eth); |
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194 | AddEmModel(1, EmModel(1), new G4IonFluctuations()); |
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195 | |
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196 | if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation()); |
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197 | |
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198 | if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2); |
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199 | EmModel(2)->SetLowEnergyLimit(eth); |
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200 | EmModel(2)->SetHighEnergyLimit(MaxKinEnergy()); |
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201 | AddEmModel(2, EmModel(2), FluctModel()); |
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202 | |
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203 | isInitialised = true; |
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204 | } |
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205 | EmModel(1)->ActivateNuclearStopping(nuclearStopping); |
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206 | EmModel(2)->ActivateNuclearStopping(nuclearStopping); |
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207 | } |
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208 | |
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209 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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210 | |
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211 | void G4hIonisation::PrintInfo() |
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212 | { |
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213 | if(EmModel(1) && EmModel(2)) { |
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214 | G4cout << " NuclearStopping= " << nuclearStopping |
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215 | << G4endl; |
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216 | } |
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217 | } |
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218 | |
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219 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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