| Geant4 Cross Reference |
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 /// \file electromagnetic/TestEm0/DirectAccess.cc
27 /// \brief Main program of the electromagnetic/TestEm0 example
28 //
29 //
30 //
31 // ------------------------------------------------------------
32 //
33 // To print cross sections per atom and mean free path for simple material
34 //
35 #include "G4BetheBlochModel.hh"
36 #include "G4BetheHeitlerModel.hh"
37 #include "G4BraggModel.hh"
38 #include "G4DataVector.hh"
39 #include "G4Electron.hh"
40 #include "G4Gamma.hh"
41 #include "G4KleinNishinaCompton.hh"
42 #include "G4Material.hh"
43 #include "G4MollerBhabhaModel.hh"
44 #include "G4MuBetheBlochModel.hh"
45 #include "G4MuBremsstrahlungModel.hh"
46 #include "G4MuPairProductionModel.hh"
47 #include "G4MuonPlus.hh"
48 #include "G4NistManager.hh"
49 #include "G4PEEffectFluoModel.hh"
50 #include "G4ParticleTable.hh"
51 #include "G4Positron.hh"
52 #include "G4Proton.hh"
53 #include "G4SeltzerBergerModel.hh"
54 #include "G4SystemOfUnits.hh"
55 #include "G4UnitsTable.hh"
56 #include "G4eeToTwoGammaModel.hh"
57 #include "globals.hh"
58
59 int main()
60 {
61 G4UnitDefinition::BuildUnitsTable();
62
63 G4ParticleDefinition* gamma = G4Gamma::Gamma();
64 G4ParticleDefinition* posit = G4Positron::Positron();
65 G4ParticleDefinition* elec = G4Electron::Electron();
66 G4ParticleDefinition* prot = G4Proton::Proton();
67 G4ParticleDefinition* muon = G4MuonPlus::MuonPlus();
68 G4ParticleTable* partTable = G4ParticleTable::GetParticleTable();
69 partTable->SetReadiness();
70
71 G4DataVector cuts;
72 cuts.push_back(1 * keV);
73
74 // define materials
75 //
76 G4Material* material = G4NistManager::Instance()->FindOrBuildMaterial("G4_Fe");
77
78 G4cout << *(G4Material::GetMaterialTable()) << G4endl;
79
80 G4MaterialCutsCouple* couple = new G4MaterialCutsCouple(material);
81 couple->SetIndex(0);
82
83 // work only for simple materials
84 G4double Z = material->GetZ();
85 G4double A = material->GetA();
86
87 // initialise gamma processes (models)
88 //
89 G4VEmModel* phot = new G4PEEffectFluoModel();
90 G4VEmModel* comp = new G4KleinNishinaCompton();
91 G4VEmModel* conv = new G4BetheHeitlerModel();
92 phot->Initialise(gamma, cuts);
93 comp->Initialise(gamma, cuts);
94 conv->Initialise(gamma, cuts);
95
96 // valid pointer to a couple is needed for this model
97 phot->SetCurrentCouple(couple);
98
99 // compute CrossSection per atom and MeanFreePath
100 //
101 G4double Emin = 1.01 * MeV, Emax = 2.01 * MeV, dE = 100 * keV;
102
103 G4cout << "\n #### Gamma : CrossSectionPerAtom and MeanFreePath for " << material->GetName()
104 << G4endl;
105 G4cout << "\n Energy \t PhotoElec \t Compton \t Conversion \t";
106 G4cout << "\t PhotoElec \t Compton \t Conversion" << G4endl;
107
108 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
109 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
110 << G4BestUnit(phot->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t"
111 << G4BestUnit(comp->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t"
112 << G4BestUnit(conv->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t \t"
113 << G4BestUnit(phot->ComputeMeanFreePath(gamma, Energy, material), "Length") << "\t"
114 << G4BestUnit(comp->ComputeMeanFreePath(gamma, Energy, material), "Length") << "\t"
115 << G4BestUnit(conv->ComputeMeanFreePath(gamma, Energy, material), "Length");
116 }
117
118 G4cout << G4endl;
119
120 // initialise positron annihilation (model)
121 //
122 G4VEmModel* anni = new G4eeToTwoGammaModel();
123 anni->Initialise(posit, cuts);
124
125 // compute CrossSection per atom and MeanFreePath
126 //
127 Emin = 1.01 * MeV;
128 Emax = 2.01 * MeV;
129 dE = 100 * keV;
130
131 G4cout << "\n #### e+ annihilation : CrossSectionPerAtom and MeanFreePath"
132 << " for " << material->GetName() << G4endl;
133 G4cout << "\n Energy \t e+ annihil \t";
134 G4cout << "\t e+ annihil" << G4endl;
135
136 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
137 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
138 << G4BestUnit(anni->ComputeCrossSectionPerAtom(posit, Energy, Z), "Surface") << "\t \t"
139 << G4BestUnit(anni->ComputeMeanFreePath(posit, Energy, material), "Length");
140 }
141
142 G4cout << G4endl;
143
144 // initialise electron processes (models)
145 //
146 G4VEmModel* ioni = new G4MollerBhabhaModel();
147 G4VEmModel* brem = new G4SeltzerBergerModel();
148 ioni->Initialise(elec, cuts);
149 brem->Initialise(elec, cuts);
150
151 // compute CrossSection per atom and MeanFreePath
152 //
153 Emin = 1.01 * MeV;
154 Emax = 101.01 * MeV;
155 dE = 10 * MeV;
156 G4double Ecut = 100 * keV;
157
158 G4cout << "\n ####electron: CrossSection, MeanFreePath and StoppingPower"
159 << " for " << material->GetName() << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy")
160 << G4endl;
161
162 G4cout << "\n Energy \t ionization \t bremsstra \t";
163 G4cout << "\t ionization \t bremsstra \t";
164 G4cout << "\t ionization \t bremsstra" << G4endl;
165
166 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
167 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
168 << G4BestUnit(ioni->ComputeCrossSectionPerAtom(elec, Energy, Z, A, Ecut), "Surface")
169 << "\t"
170 << G4BestUnit(brem->ComputeCrossSectionPerAtom(elec, Energy, Z, A, Ecut), "Surface")
171 << "\t \t"
172 << G4BestUnit(ioni->ComputeMeanFreePath(elec, Energy, material, Ecut), "Length") << "\t"
173 << G4BestUnit(brem->ComputeMeanFreePath(elec, Energy, material, Ecut), "Length")
174 << "\t \t"
175 << G4BestUnit(ioni->ComputeDEDXPerVolume(material, elec, Energy, Ecut), "Energy/Length")
176 << "\t"
177 << G4BestUnit(brem->ComputeDEDXPerVolume(material, elec, Energy, Ecut), "Energy/Length");
178 }
179
180 G4cout << G4endl;
181
182 // initialise proton processes (models)
183 //
184 ioni = new G4BetheBlochModel();
185 ioni->Initialise(prot, cuts);
186
187 // compute CrossSection per atom and MeanFreePath
188 //
189 Emin = 1.01 * MeV;
190 Emax = 102.01 * MeV;
191 dE = 10 * MeV;
192 Ecut = 100 * keV;
193
194 G4cout << "\n #### proton : CrossSection, MeanFreePath and StoppingPower"
195 << " for " << material->GetName() << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy")
196 << G4endl;
197
198 G4cout << "\n Energy \t ionization \t";
199 G4cout << "\t ionization \t";
200 G4cout << "\t ionization" << G4endl;
201
202 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
203 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
204 << G4BestUnit(ioni->ComputeCrossSectionPerAtom(prot, Energy, Z, A, Ecut), "Surface")
205 << "\t \t"
206 << G4BestUnit(ioni->ComputeMeanFreePath(prot, Energy, material, Ecut), "Length")
207 << "\t \t"
208 << G4BestUnit(ioni->ComputeDEDXPerVolume(material, prot, Energy, Ecut), "Energy/Length");
209 }
210
211 G4cout << G4endl;
212
213 // low energy : Bragg Model
214 ioni = new G4BraggModel(prot);
215 ioni->Initialise(prot, cuts);
216
217 // compute CrossSection per atom and MeanFreePath
218 //
219 Emin = 1.1 * keV;
220 Emax = 2.01 * MeV;
221 dE = 300 * keV;
222 Ecut = 10 * keV;
223
224 G4cout << "\n #### proton : low energy model (Bragg) "
225 << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;
226
227 G4cout << "\n Energy \t ionization \t";
228 G4cout << "\t ionization \t";
229 G4cout << "\t ionization" << G4endl;
230
231 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
232 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
233 << G4BestUnit(ioni->ComputeCrossSectionPerAtom(prot, Energy, Z, A, Ecut), "Surface")
234 << "\t \t"
235 << G4BestUnit(ioni->ComputeMeanFreePath(prot, Energy, material, Ecut), "Length")
236 << "\t \t"
237 << G4BestUnit(ioni->ComputeDEDXPerVolume(material, prot, Energy, Ecut), "Energy/Length");
238 }
239
240 G4cout << G4endl;
241
242 // initialise muon processes (models)
243 //
244 ioni = new G4MuBetheBlochModel();
245 brem = new G4MuBremsstrahlungModel();
246 G4VEmModel* pair = new G4MuPairProductionModel();
247 ioni->Initialise(muon, cuts);
248 brem->Initialise(muon, cuts);
249 pair->Initialise(muon, cuts);
250
251 // compute CrossSection per atom and MeanFreePath
252 //
253 Emin = 1.01 * GeV;
254 Emax = 101.01 * GeV;
255 dE = 10 * GeV;
256 Ecut = 10 * MeV;
257
258 G4cout << "\n ####muon: CrossSection and MeanFreePath for " << material->GetName()
259 << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;
260
261 G4cout << "\n Energy \t ionization \t bremsstra \t pair_prod \t";
262 G4cout << "\t ionization \t bremsstra \t pair_prod" << G4endl;
263
264 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
265 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
266 << G4BestUnit(ioni->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
267 << "\t"
268 << G4BestUnit(brem->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
269 << "\t"
270 << G4BestUnit(pair->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
271 << "\t \t"
272 << G4BestUnit(ioni->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length") << "\t"
273 << G4BestUnit(brem->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length") << "\t"
274 << G4BestUnit(pair->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length");
275 }
276
277 G4cout << G4endl;
278
279 G4cout << "\n ####muon: StoppingPower for " << material->GetName()
280 << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;
281
282 G4cout << "\n Energy \t ionization \t bremsstra \t pair_prod \t" << G4endl;
283
284 for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
285 G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
286 << G4BestUnit(ioni->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length")
287 << "\t"
288 << G4BestUnit(brem->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length")
289 << "\t"
290 << G4BestUnit(pair->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length");
291 }
292
293 G4cout << G4endl;
294 return EXIT_SUCCESS;
295 }
296
297 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
298