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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4EmMultiModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 03.05.2004
37 //
38 // Modifications:
39 // 15-04-05 optimize internal interface (V.Ivanchenko)
40 // 04-07-10 updated interfaces according to g4 9.4 (V.Ivanchenko)
41 //
42
43
44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
46
47 #include "G4EmMultiModel.hh"
48 #include "Randomize.hh"
49 #include "G4EmParameters.hh"
50
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
52
53 G4EmMultiModel::G4EmMultiModel(const G4String& nam)
54 : G4VEmModel(nam)
55 {
56 model.clear();
57 cross_section.clear();
58 }
59
60 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
61
62 G4EmMultiModel::~G4EmMultiModel() = default;
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
65
66 void G4EmMultiModel::AddModel(G4VEmModel* p)
67 {
68 cross_section.push_back(0.0);
69 model.push_back(p);
70 ++nModels;
71 }
72
73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
74
75 void G4EmMultiModel::Initialise(const G4ParticleDefinition* p,
76 const G4DataVector& cuts)
77 {
78 G4EmParameters* param = G4EmParameters::Instance();
79 G4int verb = IsMaster() ? param->Verbose() : param->WorkerVerbose();
80 if(verb > 0) {
81 G4cout << "### Initialisation of EM MultiModel " << GetName()
82 << " including following list of " << nModels << " models:" << G4endl;
83 }
84 for(G4int i=0; i<nModels; ++i) {
85 G4cout << " " << (model[i])->GetName();
86 (model[i])->SetParticleChange(pParticleChange, GetModelOfFluctuations());
87 (model[i])->Initialise(p, cuts);
88 }
89 if(verb > 0) { G4cout << G4endl; }
90 }
91
92 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
93
94 G4double G4EmMultiModel::ComputeDEDXPerVolume(const G4Material* mat,
95 const G4ParticleDefinition* p,
96 G4double kineticEnergy,
97 G4double cutEnergy)
98 {
99 G4double dedx = 0.0;
100 for(G4int i=0; i<nModels; ++i) {
101 dedx += (model[i])->ComputeDEDXPerVolume(mat, p, cutEnergy, kineticEnergy);
102 }
103
104 return dedx;
105 }
106
107 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
108
109 G4double G4EmMultiModel::ComputeCrossSectionPerAtom(const G4ParticleDefinition* p,
110 G4double kinEnergy,
111 G4double Z,
112 G4double A,
113 G4double cutEnergy,
114 G4double maxEnergy)
115 {
116 G4double cross = 0.0;
117 for(G4int i=0; i<nModels; ++i) {
118 (model[i])->SetCurrentCouple(CurrentCouple());
119 cross += (model[i])->ComputeCrossSectionPerAtom(p, kinEnergy, Z, A,
120 cutEnergy, maxEnergy);
121 }
122 return cross;
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
126
127 void G4EmMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* vdp,
128 const G4MaterialCutsCouple* couple,
129 const G4DynamicParticle* dp,
130 G4double minEnergy,
131 G4double maxEnergy)
132 {
133 SetCurrentCouple(couple);
134 if(nModels > 0) {
135 G4int i;
136 G4double cross = 0.0;
137 for(i=0; i<nModels; ++i) {
138 cross += (model[i])->CrossSection(couple, dp->GetParticleDefinition(),
139 dp->GetKineticEnergy(), minEnergy, maxEnergy);
140 cross_section[i] = cross;
141 }
142
143 cross *= G4UniformRand();
144
145 for(i=0; i<nModels; ++i) {
146 if(cross <= cross_section[i]) {
147 (model[i])->SampleSecondaries(vdp, couple, dp, minEnergy, maxEnergy);
148 return;
149 }
150 }
151 }
152 }
153
154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
155
156