source: trunk/source/processes/electromagnetic/highenergy/include/G4eeToHadronsMultiModel.hh@ 830

Last change on this file since 830 was 819, checked in by garnier, 17 years ago

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[819]1//
2// ********************************************************************
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14// * regarding this software system or assume any liability for its *
15// * use. Please see the license in the file LICENSE and URL above *
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18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
20// * By using, copying, modifying or distributing the software (or *
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24// ********************************************************************
25//
26// $Id: G4eeToHadronsMultiModel.hh,v 1.5 2007/05/23 08:50:41 vnivanch Exp $
27// GEANT4 tag $Name: $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class header file
32//
33//
34// File name: G4eeToHadronsMultiModel
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 18.05.2005
39//
40// Modifications:
41//
42
43//
44// Class Description: vector of e+e- -> hadrons models
45//
46
47// -------------------------------------------------------------------
48//
49
50#ifndef G4eeToHadronsMultiModel_h
51#define G4eeToHadronsMultiModel_h 1
52
53#include "G4VEmModel.hh"
54#include "G4eeToHadronsModel.hh"
55#include "G4ParticleChangeForGamma.hh"
56#include "G4TrackStatus.hh"
57#include "Randomize.hh"
58#include <vector>
59
60class G4eeCrossSections;
61
62class G4eeToHadronsMultiModel : public G4VEmModel
63{
64
65public:
66
67 G4eeToHadronsMultiModel(G4int ver=0, const G4String& nam = "eeToHadrons");
68
69 virtual ~G4eeToHadronsMultiModel();
70
71 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
72
73 virtual G4double CrossSectionPerVolume(const G4Material*,
74 const G4ParticleDefinition*,
75 G4double kineticEnergy,
76 G4double cutEnergy,
77 G4double maxEnergy);
78
79 virtual G4double ComputeCrossSectionPerAtom(
80 const G4ParticleDefinition*,
81 G4double kineticEnergy,
82 G4double Z, G4double A,
83 G4double cutEnergy = 0.0,
84 G4double maxEnergy = DBL_MAX);
85
86 virtual G4double ComputeCrossSectionPerElectron(
87 const G4ParticleDefinition*,
88 G4double kineticEnergy,
89 G4double cutEnergy = 0.0,
90 G4double maxEnergy = DBL_MAX);
91
92 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
93 const G4MaterialCutsCouple*,
94 const G4DynamicParticle*,
95 G4double tmin = 0.0,
96 G4double maxEnergy = DBL_MAX);
97
98 void PrintInfo();
99
100 // Set the factor to artificially increase the crossSection (default 1)
101 void SetCrossSecFactor(G4double fac);
102
103private:
104
105 // hide assignment operator
106 G4eeToHadronsMultiModel & operator=(const G4eeToHadronsMultiModel &right);
107 G4eeToHadronsMultiModel(const G4eeToHadronsMultiModel&);
108
109 G4eeCrossSections* cross;
110 G4ParticleChangeForGamma* fParticleChange;
111
112 std::vector<G4eeToHadronsModel*> models;
113
114 std::vector<G4double> ekinMin;
115 std::vector<G4double> ekinPeak;
116 std::vector<G4double> ekinMax;
117 std::vector<G4double> cumSum;
118
119 G4double thKineticEnergy;
120 G4double maxKineticEnergy;
121 G4double csFactor;
122
123 G4int nModels;
124 G4int verbose;
125 G4bool isInitialised;
126};
127
128//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
129
130inline G4double G4eeToHadronsMultiModel::CrossSectionPerVolume(
131 const G4Material* mat,
132 const G4ParticleDefinition* p,
133 G4double kineticEnergy,
134 G4double, G4double)
135{
136 return mat->GetElectronDensity()*
137 ComputeCrossSectionPerElectron(p, kineticEnergy);
138}
139
140//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
141
142inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerAtom(
143 const G4ParticleDefinition* p,
144 G4double kineticEnergy,
145 G4double Z, G4double,
146 G4double, G4double)
147{
148 return Z*ComputeCrossSectionPerElectron(p, kineticEnergy);
149}
150
151//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
152
153inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerElectron(
154 const G4ParticleDefinition*,
155 G4double kineticEnergy,
156 G4double, G4double)
157{
158 G4double res = 0.0;
159 if (kineticEnergy > thKineticEnergy) {
160 for(G4int i=0; i<nModels; i++) {
161 if(kineticEnergy >= ekinMin[i] && kineticEnergy <= ekinMax[i])
162 res += (models[i])->ComputeCrossSectionPerElectron(0,kineticEnergy);
163 cumSum[i] = res;
164 }
165 }
166 return res*csFactor;
167}
168
169//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
170
171inline
172void G4eeToHadronsMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* newp,
173 const G4MaterialCutsCouple* couple,
174 const G4DynamicParticle* dp,
175 G4double, G4double)
176{
177 G4double kinEnergy = dp->GetKineticEnergy();
178 if (kinEnergy > thKineticEnergy) {
179 G4double q = cumSum[nModels-1]*G4UniformRand();
180 for(G4int i=0; i<nModels; i++) {
181 if(q <= cumSum[i]) {
182 (models[i])->SampleSecondaries(newp, couple,dp);
183 if(newp->size() > 0) fParticleChange->ProposeTrackStatus(fStopAndKill);
184 break;
185 }
186 }
187 }
188}
189
190//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
191
192#endif
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