1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
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 * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // $Id: G4EmMultiModel.cc,v 1.6 2007/05/22 17:31:58 vnivanch Exp $ |
---|
27 | // GEANT4 tag $Name: $ |
---|
28 | // |
---|
29 | // ------------------------------------------------------------------- |
---|
30 | // |
---|
31 | // GEANT4 Class file |
---|
32 | // |
---|
33 | // |
---|
34 | // File name: G4EmMultiModel |
---|
35 | // |
---|
36 | // Author: Vladimir Ivanchenko |
---|
37 | // |
---|
38 | // Creation date: 03.05.2004 |
---|
39 | // |
---|
40 | // Modifications: |
---|
41 | // 15-04-05 optimize internal interface (V.Ivanchenko) |
---|
42 | // |
---|
43 | |
---|
44 | // Class Description: |
---|
45 | // |
---|
46 | // Energy loss model using several G4VEmModels |
---|
47 | |
---|
48 | // ------------------------------------------------------------------- |
---|
49 | // |
---|
50 | |
---|
51 | |
---|
52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
53 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
54 | |
---|
55 | #include "G4EmMultiModel.hh" |
---|
56 | #include "Randomize.hh" |
---|
57 | |
---|
58 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
59 | |
---|
60 | G4EmMultiModel::G4EmMultiModel(const G4String& nam) |
---|
61 | : G4VEmModel(nam), |
---|
62 | nModels(0) |
---|
63 | { |
---|
64 | model.clear(); |
---|
65 | tsecmin.clear(); |
---|
66 | cross_section.clear(); |
---|
67 | } |
---|
68 | |
---|
69 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
70 | |
---|
71 | G4EmMultiModel::~G4EmMultiModel() |
---|
72 | { |
---|
73 | if(nModels) { |
---|
74 | for(G4int i=0; i<nModels; i++) { |
---|
75 | delete model[i]; |
---|
76 | } |
---|
77 | } |
---|
78 | } |
---|
79 | |
---|
80 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
81 | |
---|
82 | void G4EmMultiModel::Initialise(const G4ParticleDefinition* p, |
---|
83 | const G4DataVector& cuts) |
---|
84 | { |
---|
85 | if(nModels) { |
---|
86 | for(G4int i=0; i<nModels; i++) { |
---|
87 | (model[i])->Initialise(p, cuts); |
---|
88 | } |
---|
89 | } |
---|
90 | } |
---|
91 | |
---|
92 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
93 | |
---|
94 | G4double G4EmMultiModel::MinEnergyCut(const G4ParticleDefinition* p, |
---|
95 | const G4MaterialCutsCouple* couple) |
---|
96 | { |
---|
97 | G4double cut = DBL_MAX; |
---|
98 | if(nModels) { |
---|
99 | cut = (model[0])->MinEnergyCut(p, couple); |
---|
100 | } |
---|
101 | return cut; |
---|
102 | } |
---|
103 | |
---|
104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
105 | |
---|
106 | G4double G4EmMultiModel::ComputeDEDX(const G4MaterialCutsCouple* couple, |
---|
107 | const G4ParticleDefinition* p, |
---|
108 | G4double kineticEnergy, |
---|
109 | G4double cutEnergy) |
---|
110 | { |
---|
111 | G4double dedx = 0.0; |
---|
112 | |
---|
113 | if(nModels) { |
---|
114 | dedx = (model[0])->ComputeDEDX(couple, p, cutEnergy, kineticEnergy); |
---|
115 | } |
---|
116 | |
---|
117 | return dedx; |
---|
118 | } |
---|
119 | |
---|
120 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
121 | |
---|
122 | G4double G4EmMultiModel::CrossSection(const G4MaterialCutsCouple* couple, |
---|
123 | const G4ParticleDefinition* p, |
---|
124 | G4double kineticEnergy, |
---|
125 | G4double cutEnergy, |
---|
126 | G4double maxKinEnergy) |
---|
127 | { |
---|
128 | G4double cross = 0.0; |
---|
129 | G4double t1 = cutEnergy; |
---|
130 | G4double t2 = cutEnergy; |
---|
131 | if(nModels) { |
---|
132 | for(G4int i=0; i<nModels; i++) { |
---|
133 | t1 = std::max(t2, tsecmin[i]); |
---|
134 | t2 = std::min(maxKinEnergy, tsecmin[i+1]); |
---|
135 | cross += (model[i])->CrossSection(couple, p, kineticEnergy, t1, t2); |
---|
136 | } |
---|
137 | } |
---|
138 | return cross; |
---|
139 | } |
---|
140 | |
---|
141 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
142 | |
---|
143 | void G4EmMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* vdp, |
---|
144 | const G4MaterialCutsCouple* couple, |
---|
145 | const G4DynamicParticle* dp, |
---|
146 | G4double tmin, |
---|
147 | G4double maxEnergy) |
---|
148 | { |
---|
149 | if(nModels > 0) { |
---|
150 | G4int i; |
---|
151 | G4double cross = 0.0; |
---|
152 | G4double t1 = tmin; |
---|
153 | G4double t2 = tmin; |
---|
154 | for(i=0; i<nModels; i++) { |
---|
155 | t1 = std::max(t2, tsecmin[i]); |
---|
156 | t2 = std::min(maxEnergy, tsecmin[i+1]); |
---|
157 | cross += (model[i])->CrossSection(couple, dp->GetDefinition(), |
---|
158 | dp->GetKineticEnergy(), t1, t2); |
---|
159 | cross_section[i] = cross; |
---|
160 | } |
---|
161 | |
---|
162 | cross *= G4UniformRand(); |
---|
163 | t2 = tmin; |
---|
164 | |
---|
165 | for(i=0; i<nModels; i++) { |
---|
166 | t1 = std::max(t2, tsecmin[i]); |
---|
167 | t2 = std::min(maxEnergy, tsecmin[i+1]); |
---|
168 | if(cross <= cross_section[i]) { |
---|
169 | (model[i])->SampleSecondaries(vdp, couple, dp, t1, t2); |
---|
170 | break; |
---|
171 | } |
---|
172 | } |
---|
173 | } |
---|
174 | } |
---|
175 | |
---|
176 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
177 | |
---|
178 | G4double G4EmMultiModel:: MaxSecondaryEnergy(const G4ParticleDefinition*, |
---|
179 | G4double kinEnergy) |
---|
180 | { |
---|
181 | G4cout << "Warning! G4EmMultiModel::" |
---|
182 | << "MaxSecondaryEnergy(const G4ParticleDefinition*,G4double kinEnergy)" |
---|
183 | << " should not be used!" << G4endl; |
---|
184 | return kinEnergy; |
---|
185 | } |
---|
186 | |
---|
187 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
188 | |
---|
189 | void G4EmMultiModel::DefineForRegion(const G4Region* r) |
---|
190 | { |
---|
191 | if(nModels) { |
---|
192 | for(G4int i=0; i<nModels; i++) {(model[i])->DefineForRegion(r);} |
---|
193 | } |
---|
194 | } |
---|
195 | |
---|
196 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
197 | |
---|
198 | void G4EmMultiModel::AddModel(G4VEmModel* p, G4double tmin, G4double tmax) |
---|
199 | { |
---|
200 | if(tmin < tmax && 0.0 < tmin) { |
---|
201 | |
---|
202 | if(nModels == 0) { |
---|
203 | tsecmin.push_back(tmin); |
---|
204 | tsecmin.push_back(tmax); |
---|
205 | cross_section.push_back(0.0); |
---|
206 | model.push_back(p); |
---|
207 | nModels++; |
---|
208 | |
---|
209 | } else { |
---|
210 | G4int i, j; |
---|
211 | G4bool increment = false; |
---|
212 | for(i=0; i<nModels; i++) { |
---|
213 | |
---|
214 | if(tmin < tsecmin[i]) { |
---|
215 | G4double t2 = std::min(tsecmin[i+1],tmax); |
---|
216 | if(tmin < t2) { |
---|
217 | tsecmin.push_back(0.0); |
---|
218 | cross_section.push_back(0.0); |
---|
219 | model.push_back(0); |
---|
220 | for(j=nModels; j>i; j--) { |
---|
221 | model[j] = model[j-1]; |
---|
222 | tsecmin[j+1] = tsecmin[j]; |
---|
223 | } |
---|
224 | model[i] = p; |
---|
225 | tsecmin[i+1] = t2; |
---|
226 | tsecmin[i] = tmin; |
---|
227 | increment = true; |
---|
228 | } |
---|
229 | } else if(i == nModels-1) { |
---|
230 | G4double t1 = std::min(tsecmin[i+1],tmin); |
---|
231 | G4double t2 = std::max(tsecmin[i+1],tmax); |
---|
232 | if(t1 < t2) { |
---|
233 | tsecmin.push_back(t2); |
---|
234 | cross_section.push_back(0.0); |
---|
235 | model.push_back(p); |
---|
236 | increment = true; |
---|
237 | } |
---|
238 | } |
---|
239 | } |
---|
240 | if(increment) nModels++; |
---|
241 | } |
---|
242 | } |
---|
243 | } |
---|
244 | |
---|
245 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
246 | |
---|