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25 // 22 //
>> 23 // $Id: G4MuIonisation.hh,v 1.17 2003/11/12 16:18:23 vnivanch Exp $
>> 24 // GEANT4 tag $Name: geant4-06-00 $
26 // 25 //
27 // ------------------------------------------- 26 // -------------------------------------------------------------------
28 // 27 //
29 // GEANT4 Class header file 28 // GEANT4 Class header file
30 // 29 //
31 // 30 //
32 // File name: G4MuIonisation 31 // File name: G4MuIonisation
33 // 32 //
34 // Author: Laszlo Urban 33 // Author: Laszlo Urban
35 // 34 //
36 // Creation date: 30.05.1997 35 // Creation date: 30.05.1997
37 // 36 //
38 // Modifications: 37 // Modifications:
39 // 38 //
40 // corrected by L.Urban on 24/09/97 39 // corrected by L.Urban on 24/09/97
41 // corrected by L.Urban on 13/01/98 40 // corrected by L.Urban on 13/01/98
42 // bugs fixed by L.Urban on 02/02/99 41 // bugs fixed by L.Urban on 02/02/99
43 // 10/02/00 modifications , new e.m. structure 42 // 10/02/00 modifications , new e.m. structure, L.Urban
44 // 10-08-01 new methods Store/Retrieve Physics 43 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
45 // 14-08-01 new function ComputeRestrictedMean 44 // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
46 // 19-09-01 come back to previous process name 45 // 19-09-01 come back to previous process name "hIoni"
47 // 29-10-01 all static functions no more inlin 46 // 29-10-01 all static functions no more inlined
48 // 10-05-02 V.Ivanchenko update to new design 47 // 10-05-02 V.Ivanchenko update to new design
49 // 09-12-02 V.Ivanchenko remove warning 48 // 09-12-02 V.Ivanchenko remove warning
50 // 26-12-02 Secondary production moved to deri 49 // 26-12-02 Secondary production moved to derived classes (VI)
51 // 24-01-03 Make models region aware (V.Ivanch 50 // 24-01-03 Make models region aware (V.Ivanchenko)
52 // 05-02-03 Fix compilation warnings (V.Ivanch 51 // 05-02-03 Fix compilation warnings (V.Ivanchenko)
53 // 13-02-03 SubCutoff regime is assigned to a 52 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
54 // 23-05-03 Add fluctuation model as a member 53 // 23-05-03 Add fluctuation model as a member function (V.Ivanchenko)
55 // 03-06-03 Add SetIntegral method to choose f 54 // 03-06-03 Add SetIntegral method to choose fluctuation model (V.Ivanchenko)
56 // 03-06-03 Fix initialisation problem for STD 55 // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
57 // 08-08-03 STD substitute standard (V.Ivanch 56 // 08-08-03 STD substitute standard (V.Ivanchenko)
58 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro 57 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
59 // 21-01-04 Migrade to G4ParticleChangeForLoss <<
60 // 17-08-04 Rename the process "Mu" -> "mu" (V <<
61 // 08-11-04 Migration to new interface of Stor <<
62 // 08-04-05 Major optimisation of internal int <<
63 // 58 //
64 // Class Description: 59 // Class Description:
65 // 60 //
66 // This class manages the ionisation process f 61 // This class manages the ionisation process for muons.
67 // it inherites from G4VContinuousDiscreteProc 62 // it inherites from G4VContinuousDiscreteProcess via G4VEnergyLossProcess.
68 // 63 //
69 64
70 // ------------------------------------------- 65 // -------------------------------------------------------------------
71 // 66 //
72 67
73 #ifndef G4MuIonisation_h 68 #ifndef G4MuIonisation_h
74 #define G4MuIonisation_h 1 69 #define G4MuIonisation_h 1
75 70
76 #include "G4VEnergyLossProcess.hh" 71 #include "G4VEnergyLossProcess.hh"
>> 72 #include "G4Electron.hh"
>> 73 #include "G4Positron.hh"
77 #include "globals.hh" 74 #include "globals.hh"
78 #include "G4VEmModel.hh" <<
79 75
80 class G4Material; 76 class G4Material;
>> 77 class G4VEmFluctuationModel;
81 78
82 class G4MuIonisation : public G4VEnergyLossPro 79 class G4MuIonisation : public G4VEnergyLossProcess
83 { 80 {
84 81
85 public: 82 public:
86 83
87 explicit G4MuIonisation(const G4String& name << 84 G4MuIonisation(const G4String& name = "MuIoni");
88 85
89 ~G4MuIonisation() override = default; << 86 ~G4MuIonisation();
90 87
91 G4bool IsApplicable(const G4ParticleDefiniti << 88 G4bool IsApplicable(const G4ParticleDefinition& p)
>> 89 {return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);};
92 90
93 G4double MinPrimaryEnergy(const G4ParticleDe << 91 virtual G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
94 const G4Material*, << 92 const G4Material*, G4double cut);
95 93
>> 94 virtual std::vector<G4Track*>* SecondariesAlongStep(
>> 95 const G4Step&,
>> 96 G4double&,
>> 97 G4double&,
>> 98 G4double&);
96 99
97 // print description in html << 100 virtual void SecondariesPostStep(
98 void ProcessDescription(std::ostream&) const << 101 G4VEmModel*,
>> 102 const G4MaterialCutsCouple*,
>> 103 const G4DynamicParticle*,
>> 104 G4double&,
>> 105 G4double&);
99 106
100 // hide assignment operator << 107 void SetSubCutoff(G4bool val);
101 G4MuIonisation & operator=(const G4MuIonisat << 108
102 G4MuIonisation(const G4MuIonisation&) = dele << 109 void PrintInfoDefinition();
>> 110 // Print out of the class parameters
103 111
104 protected: 112 protected:
105 113
106 void InitialiseEnergyLossProcess(const G4Par << 114 const G4ParticleDefinition* DefineBaseParticle(const G4ParticleDefinition* p);
107 const G4Par << 115
>> 116 virtual G4double MaxSecondaryEnergy(const G4DynamicParticle* dynParticle);
108 117
109 private: 118 private:
110 119
111 const G4ParticleDefinition* theParticle = nu << 120 void InitialiseProcess();
112 const G4ParticleDefinition* theBaseParticle << 121
>> 122 // hide assignment operator
>> 123 G4MuIonisation & operator=(const G4MuIonisation &right);
>> 124 G4MuIonisation(const G4MuIonisation&);
>> 125
>> 126 G4double mass;
>> 127 G4double ratio;
113 128
114 G4double mass = 0.0; << 129 const G4ParticleDefinition* theParticle;
115 G4double ratio = 0.0; << 130 const G4ParticleDefinition* theBaseParticle;
>> 131 G4VEmFluctuationModel* flucModel;
116 132
117 G4bool isInitialised = false; << 133 G4bool subCutoff;
>> 134 G4bool isInitialised;
118 }; 135 };
>> 136
>> 137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 138 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 139
>> 140 inline G4double G4MuIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
>> 141 const G4Material*,
>> 142 G4double cut)
>> 143 {
>> 144 G4double x = 0.5*cut/electron_mass_c2;
>> 145 G4double y = electron_mass_c2/mass;
>> 146 G4double g = x*y + sqrt((1. + x)*(1. + x*y*y));
>> 147 return mass*(g - 1.0);
>> 148 }
>> 149
>> 150 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 151
>> 152 inline G4double G4MuIonisation::MaxSecondaryEnergy(const G4DynamicParticle* dynParticle)
>> 153 {
>> 154 G4double gamma= dynParticle->GetKineticEnergy()/mass + 1.0;
>> 155 G4double tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) /
>> 156 (1. + 2.0*gamma*ratio + ratio*ratio);
>> 157
>> 158 return tmax;
>> 159 }
>> 160
>> 161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 162
>> 163 #include "G4VSubCutoffProcessor.hh"
>> 164
>> 165 inline std::vector<G4Track*>* G4MuIonisation::SecondariesAlongStep(
>> 166 const G4Step& step,
>> 167 G4double& tmax,
>> 168 G4double& eloss,
>> 169 G4double& kinEnergy)
>> 170 {
>> 171 std::vector<G4Track*>* newp = 0;
>> 172 if(subCutoff) {
>> 173 G4VSubCutoffProcessor* sp = SubCutoffProcessor(CurrentMaterialCutsCoupleIndex());
>> 174 if (sp) {
>> 175 G4VEmModel* model = SelectModel(kinEnergy);
>> 176 newp = sp->SampleSecondaries(step,tmax,eloss,model);
>> 177 }
>> 178 }
>> 179 return newp;
>> 180 }
>> 181
>> 182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 183
>> 184 #include "G4VEmModel.hh"
>> 185
>> 186 inline void G4MuIonisation::SecondariesPostStep(
>> 187 G4VEmModel* model,
>> 188 const G4MaterialCutsCouple* couple,
>> 189 const G4DynamicParticle* dp,
>> 190 G4double& tcut,
>> 191 G4double& kinEnergy)
>> 192 {
>> 193 G4DynamicParticle* delta = model->SampleSecondary(couple, dp, tcut, kinEnergy);
>> 194 aParticleChange.SetNumberOfSecondaries(1);
>> 195 aParticleChange.AddSecondary(delta);
>> 196 G4ThreeVector finalP = dp->GetMomentum();
>> 197 kinEnergy -= delta->GetKineticEnergy();
>> 198 finalP -= delta->GetMomentum();
>> 199 finalP = finalP.unit();
>> 200 aParticleChange.SetMomentumDirectionChange(finalP);
>> 201 }
119 202
120 //....oooOO0OOooo........oooOO0OOooo........oo 203 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
121 204
122 #endif 205 #endif
123 206