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G4eeToHadronsMultiModel.hh
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27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4eeToHadronsMultiModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 18.05.2005
37 //
38 // Modifications:
39 //
40 
41 //
42 // Class Description: vector of e+e- -> hadrons models
43 //
44 
45 // -------------------------------------------------------------------
46 //
47 
48 #ifndef G4eeToHadronsMultiModel_h
49 #define G4eeToHadronsMultiModel_h 1
50 
51 #include "G4VEmModel.hh"
52 #include "G4eeToHadronsModel.hh"
54 #include "G4TrackStatus.hh"
55 #include "Randomize.hh"
58 #include <vector>
59 
60 class G4eeCrossSections;
61 class G4Vee2hadrons;
62 
64 {
65 
66 public:
67 
68  explicit G4eeToHadronsMultiModel(G4int ver=0,
69  const G4String& nam = "eeToHadrons");
70 
71  virtual ~G4eeToHadronsMultiModel();
72 
73  virtual void Initialise(const G4ParticleDefinition*,
74  const G4DataVector&) override;
75 
77  const G4ParticleDefinition*,
78  G4double kineticEnergy,
79  G4double cutEnergy,
80  G4double maxEnergy) override;
81 
83  const G4ParticleDefinition*,
84  G4double kineticEnergy,
86  G4double cutEnergy = 0.0,
87  G4double maxEnergy = DBL_MAX) override;
88 
89  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
90  const G4MaterialCutsCouple*,
91  const G4DynamicParticle*,
92  G4double tmin = 0.0,
93  G4double maxEnergy = DBL_MAX) override;
94 
95  virtual void ModelDescription(std::ostream& outFile) const override;
96 
97  // Set the factor to artificially increase the crossSection (default 1)
99 
101  const G4ParticleDefinition*,
102  G4double kineticEnergy,
103  G4double cutEnergy = 0.0,
104  G4double maxEnergy = DBL_MAX);
105 
106 private:
107 
108  void AddEEModel(G4Vee2hadrons*, const G4DataVector&);
109 
110  //change incident e+ kinetic energy into CM total energy(sum of e+ and e-)
111  inline G4double LabToCM(G4double);
112 
113  // hide assignment operator
116 
120 
121  std::vector<G4eeToHadronsModel*> models;
122 
123  std::vector<G4double> ekinMin;
124  std::vector<G4double> ekinPeak;
125  std::vector<G4double> ekinMax;
126  std::vector<G4double> cumSum;
127 
131 
135 };
136 
137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
138 
139 //change incident e+ kinetic energy into CM total energy(sum of e+ and e-)
141 {
142  G4double totE_CM = 0.0;
144  G4double totE_lab = kinE_lab + mass;
145  totE_CM = std::sqrt(2*mass*(mass+totE_lab));
146 
147  return totE_CM;
148 }
149 
151  const G4ParticleDefinition*,
152  G4double kineticEnergy,
154 {
155  G4double res = 0.0;
156 
157  G4double energy = LabToCM(kineticEnergy);
158 
159  if (energy > thKineticEnergy) {
160  for(G4int i=0; i<nModels; i++) {
161  if(energy >= ekinMin[i] && energy <= ekinMax[i]){
162  res += (models[i])->ComputeCrossSectionPerElectron(0,energy);
163  }
164  cumSum[i] = res;
165  }
166  }
167  return res*csFactor;
168 }
169 
170 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
171 
172 #endif