Geant4 Cross Reference

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Geant4/processes/electromagnetic/muons/src/G4MuPairProduction.cc

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Diff markup

Differences between /processes/electromagnetic/muons/src/G4MuPairProduction.cc (Version 11.3.0) and /processes/electromagnetic/muons/src/G4MuPairProduction.cc (Version 9.3)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
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 10 // *                                               10 // *                                                                  *
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 14 // * regarding  this  software system or assum     14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file      15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                               17 // *                                                                  *
 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
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 23 // * acceptance of all terms of the Geant4 Sof     23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
                                                   >>  26 // $Id: G4MuPairProduction.cc,v 1.52 2009/02/20 14:48:16 vnivanch Exp $
                                                   >>  27 // GEANT4 tag $Name: geant4-09-03 $
 26 //                                                 28 //
 27 // -------------------------------------------     29 // -------------------------------------------------------------------
 28 //                                                 30 //
 29 // GEANT4 Class file                               31 // GEANT4 Class file
 30 //                                                 32 //
 31 //                                                 33 //
 32 // File name:     G4MuPairProduction               34 // File name:     G4MuPairProduction
 33 //                                                 35 //
 34 // Author:        Laszlo Urban                     36 // Author:        Laszlo Urban
 35 //                                                 37 //
 36 // Creation date: 30.05.1998                       38 // Creation date: 30.05.1998
 37 //                                                 39 //
 38 // Modifications:                                  40 // Modifications:
 39 //                                                 41 //
 40 // 04-06-98 in DoIt,secondary production condi     42 // 04-06-98 in DoIt,secondary production condition:
 41 //          range>std::min(threshold,safety)       43 //          range>std::min(threshold,safety)
 42 // 26-10-98 new stuff from R. Kokoulin + clean     44 // 26-10-98 new stuff from R. Kokoulin + cleanup , L.Urban
 43 // 06-05-99 bug fixed , L.Urban                    45 // 06-05-99 bug fixed , L.Urban
 44 // 10-02-00 modifications+bug fix , new e.m. s     46 // 10-02-00 modifications+bug fix , new e.m. structure, L.Urban
 45 // 29-05-01 V.Ivanchenko minor changes to prov     47 // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
 46 // 10-08-01 new methods Store/Retrieve Physics     48 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
 47 // 17-09-01 migration of Materials to pure STL     49 // 17-09-01 migration of Materials to pure STL (mma)
 48 // 20-09-01 (L.Urban) in ComputeMicroscopicCro     50 // 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove:
 49 //          if(MaxPairEnergy<CutInPairEnergy)      51 //          if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy
 50 // 26-09-01 completion of store/retrieve Physi     52 // 26-09-01 completion of store/retrieve PhysicsTable
 51 // 28-09-01 suppression of theMuonPlus ..etc..     53 // 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
 52 // 29-10-01 all static functions no more inlin     54 // 29-10-01 all static functions no more inlined (mma)
 53 // 07-11-01 particleMass becomes a local varia     55 // 07-11-01 particleMass becomes a local variable (mma)
 54 // 19-08-02 V.Ivanchenko update to new design      56 // 19-08-02 V.Ivanchenko update to new design
 55 // 23-12-02 Change interface in order to move      57 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
 56 // 26-12-02 Secondary production moved to deri     58 // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
 57 // 13-02-03 SubCutoff regime is assigned to a      59 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
 58 // 08-08-03 STD substitute standard  (V.Ivanch     60 // 08-08-03 STD substitute standard  (V.Ivanchenko)
 59 // 27-09-03 e+ set to be a secondary particle      61 // 27-09-03 e+ set to be a secondary particle (V.Ivanchenko)
 60 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro     62 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
 61 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)     63 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
 62 // 17-08-04 Utilise mu+ tables for mu- (V.Ivan     64 // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko)
 63 // 08-11-04 Migration to new interface of Stor     65 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
 64 // 08-04-05 Major optimisation of internal int     66 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
 65 //                                                 67 //
 66 // -------------------------------------------     68 // -------------------------------------------------------------------
 67 //                                                 69 //
 68 //....oooOO0OOooo........oooOO0OOooo........oo     70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 69 //....oooOO0OOooo........oooOO0OOooo........oo     71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 70                                                    72 
 71 #include "G4MuPairProduction.hh"                   73 #include "G4MuPairProduction.hh"
 72 #include "G4SystemOfUnits.hh"                  <<  74 #include "G4Electron.hh"
 73 #include "G4Positron.hh"                           75 #include "G4Positron.hh"
 74 #include "G4VEmModel.hh"                       <<  76 #include "G4MuonPlus.hh"
                                                   >>  77 #include "G4MuonMinus.hh"
 75 #include "G4MuPairProductionModel.hh"              78 #include "G4MuPairProductionModel.hh"
 76 #include "G4ElementData.hh"                    <<  79 #include "G4UniversalFluctuation.hh"
 77 #include "G4EmParameters.hh"                   << 
 78                                                    80 
 79 //....oooOO0OOooo........oooOO0OOooo........oo     81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 80                                                    82 
                                                   >>  83 using namespace std;
                                                   >>  84 
 81 G4MuPairProduction::G4MuPairProduction(const G     85 G4MuPairProduction::G4MuPairProduction(const G4String& name)
 82   : G4VEnergyLossProcess(name),                    86   : G4VEnergyLossProcess(name),
 83     lowestKinEnergy(0.85*CLHEP::GeV)           <<  87     theParticle(0),
                                                   >>  88     theBaseParticle(0),
                                                   >>  89     lowestKinEnergy(1.*GeV),
                                                   >>  90     isInitialised(false)
 84 {                                                  91 {
 85   SetProcessSubType(fPairProdByCharged);           92   SetProcessSubType(fPairProdByCharged);
 86   SetSecondaryParticle(G4Positron::Positron()) << 
 87   SetIonisation(false);                        << 
 88 }                                                  93 }
 89                                                    94 
 90 //....oooOO0OOooo........oooOO0OOooo........oo     95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 91                                                    96 
                                                   >>  97 G4MuPairProduction::~G4MuPairProduction()
                                                   >>  98 {}
                                                   >>  99 
                                                   >> 100 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
                                                   >> 101 
 92 G4bool G4MuPairProduction::IsApplicable(const     102 G4bool G4MuPairProduction::IsApplicable(const G4ParticleDefinition& p)
 93 {                                                 103 {
 94   return (p.GetPDGCharge() != 0.0);            << 104   return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);
 95 }                                                 105 }
 96                                                   106 
 97 //....oooOO0OOooo........oooOO0OOooo........oo    107 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 98                                                   108 
 99 G4double G4MuPairProduction::MinPrimaryEnergy(    109 G4double G4MuPairProduction::MinPrimaryEnergy(const G4ParticleDefinition*,
100                 const G4Material*,                110                 const G4Material*,
101                 G4double)                         111                 G4double)
102 {                                                 112 {
103   return lowestKinEnergy;                         113   return lowestKinEnergy;
104 }                                                 114 }
105                                                   115 
106 //....oooOO0OOooo........oooOO0OOooo........oo    116 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
107                                                   117 
108 void G4MuPairProduction::InitialiseEnergyLossP    118 void G4MuPairProduction::InitialiseEnergyLossProcess(
109                          const G4ParticleDefin    119                          const G4ParticleDefinition* part,
110        const G4ParticleDefinition*)               120        const G4ParticleDefinition*)
111 {                                                 121 {
112   if (isInitialised) { return; }               << 122   if (!isInitialised) {
113   isInitialised = true;                        << 123     isInitialised = true;
114                                                   124 
115   theParticle = part;                          << 125     theParticle = part;
116                                                << 126     SetSecondaryParticle(G4Positron::Positron());
117   G4VEmModel* mod = EmModel(0);                << 127     SetIonisation(false);
118   if(nullptr == mod) {                         << 128 
119     lowestKinEnergy = std::max(lowestKinEnergy << 129     G4MuPairProductionModel* em = new G4MuPairProductionModel();
120     auto ptr = new G4MuPairProductionModel(par << 130     em->SetLowestKineticEnergy(lowestKinEnergy);
121     ptr->SetLowestKineticEnergy(lowestKinEnerg << 131     G4VEmFluctuationModel* fm = 0;
122     mod = ptr;                                 << 132     em->SetLowEnergyLimit(MinKinEnergy());
123     SetEmModel(mod);                           << 133     em->SetHighEnergyLimit(MaxKinEnergy());
                                                   >> 134     AddEmModel(1, em, fm);
124   }                                               135   }
125                                                << 
126   G4VEmFluctuationModel* fm = nullptr;         << 
127   G4EmParameters* param = G4EmParameters::Inst << 
128   mod->SetLowEnergyLimit(param->MinKinEnergy() << 
129   mod->SetHighEnergyLimit(param->MaxKinEnergy( << 
130   mod->SetSecondaryThreshold(param->MuHadBrems << 
131   AddEmModel(1, mod, fm);                      << 
132 }                                                 136 }
133                                                   137 
134 //....oooOO0OOooo........oooOO0OOooo........oo    138 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
135                                                   139 
136 void G4MuPairProduction::StreamProcessInfo(std << 140 void G4MuPairProduction::PrintInfo()
137 {                                              << 141 {}
138   G4ElementData* ed = EmModel()->GetElementDat << 
139   if(ed) {                                     << 
140     for(G4int Z=1; Z<93; ++Z) {                << 
141       G4Physics2DVector* pv = ed->GetElement2D << 
142       if(pv) {                                 << 
143         out << "      Sampling table " << pv-> << 
144       << "x" << pv->GetLengthX() << "; from "  << 
145       << std::exp(pv->GetY(0))/GeV << " GeV to << 
146       << std::exp(pv->GetY(pv->GetLengthY()-1) << 
147       << " TeV " << G4endl;                    << 
148   break;                                       << 
149       }                                        << 
150     }                                          << 
151   }                                            << 
152 }                                              << 
153                                                   142 
154 //....oooOO0OOooo........oooOO0OOooo........oo    143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
155                                                   144 
156 void G4MuPairProduction::ProcessDescription(st << 
157 {                                              << 
158   out << "  Electron-positron pair production  << 
159   G4VEnergyLossProcess::ProcessDescription(out << 
160 }                                              << 
161                                                   145 
162 //....oooOO0OOooo........oooOO0OOooo........oo << 146 
                                                   >> 147 
163                                                   148