source: trunk/source/processes/electromagnetic/utils/src/G4VEmModel.cc@ 1089

Last change on this file since 1089 was 1055, checked in by garnier, 17 years ago

maj sur la beta de geant 4.9.3
File size: 8.2 KB
Line 
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 *
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10// * *
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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 *
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 *
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23// * acceptance of all terms of the Geant4 Software license. *
24// ********************************************************************
25//
26// $Id: G4VEmModel.cc,v 1.27 2009/05/26 15:00:49 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-03-beta-cand-01 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class file
32//
33//
34// File name: G4VEmModel
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 25.07.2005
39//
40// Modifications:
41// 25.10.2005 Set default highLimit=100.TeV (V.Ivanchenko)
42// 06.02.2006 add method ComputeMeanFreePath() (mma)
43// 16.02.2009 Move implementations of virtual methods to source (VI)
44//
45//
46// Class Description:
47//
48// Abstract interface to energy loss models
49
50// -------------------------------------------------------------------
51//
52
53#include "G4VEmModel.hh"
54#include "G4LossTableManager.hh"
55#include "G4ProductionCutsTable.hh"
56#include "G4ParticleChangeForLoss.hh"
57#include "G4ParticleChangeForGamma.hh"
58
59//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61
62G4VEmModel::G4VEmModel(const G4String& nam):
63 fluc(0), name(nam), lowLimit(0.1*keV), highLimit(100.0*TeV),
64 polarAngleLimit(0.0),secondaryThreshold(DBL_MAX),theLPMflag(false),
65 pParticleChange(0),nuclearStopping(false),
66 currentCouple(0),currentElement(0),
67 nsec(5),flagDeexcitation(false)
68{
69 xsec.resize(nsec);
70 nSelectors = 0;
71 G4LossTableManager::Instance()->Register(this);
72}
73
74//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76G4VEmModel::~G4VEmModel()
77{
78 G4LossTableManager::Instance()->DeRegister(this);
79 G4int n = elmSelectors.size();
80 if(n > 0) {
81 for(G4int i=0; i<n; i++) {
82 delete elmSelectors[i];
83 }
84 }
85}
86
87//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
88
89G4ParticleChangeForLoss* G4VEmModel::GetParticleChangeForLoss()
90{
91 G4ParticleChangeForLoss* p = 0;
92 if (pParticleChange) {
93 p = static_cast<G4ParticleChangeForLoss*>(pParticleChange);
94 } else {
95 p = new G4ParticleChangeForLoss();
96 }
97 return p;
98}
99
100//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
101
102G4ParticleChangeForGamma* G4VEmModel::GetParticleChangeForGamma()
103{
104 G4ParticleChangeForGamma* p = 0;
105 if (pParticleChange) {
106 p = static_cast<G4ParticleChangeForGamma*>(pParticleChange);
107 } else {
108 p = new G4ParticleChangeForGamma();
109 }
110 return p;
111}
112
113//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
114
115void G4VEmModel::InitialiseElementSelectors(const G4ParticleDefinition* p,
116 const G4DataVector& cuts)
117{
118 // initialise before run
119 flagDeexcitation = false;
120
121 G4int nbins = G4int(std::log10(highLimit/lowLimit) + 0.5);
122 if(nbins < 3) nbins = 3;
123 G4bool spline = G4LossTableManager::Instance()->SplineFlag();
124
125 G4ProductionCutsTable* theCoupleTable=
126 G4ProductionCutsTable::GetProductionCutsTable();
127 G4int numOfCouples = theCoupleTable->GetTableSize();
128
129 // prepare vector
130 if(numOfCouples > nSelectors) elmSelectors.reserve(numOfCouples);
131
132 // initialise vector
133 for(G4int i=0; i<numOfCouples; i++) {
134 const G4MaterialCutsCouple* couple =
135 theCoupleTable->GetMaterialCutsCouple(i);
136 const G4Material* material = couple->GetMaterial();
137 G4int idx = couple->GetIndex();
138
139 // selector already exist check if should be deleted
140 G4bool create = true;
141 if(i < nSelectors) {
142 if(elmSelectors[i]) {
143 if(material == elmSelectors[i]->GetMaterial()) create = false;
144 else delete elmSelectors[i];
145 }
146 } else {
147 nSelectors++;
148 elmSelectors.push_back(0);
149 }
150 if(create) {
151 elmSelectors[i] = new G4EmElementSelector(this,material,nbins,
152 lowLimit,highLimit,spline);
153 }
154 elmSelectors[i]->Initialise(p, cuts[idx]);
155 //elmSelectors[i]->Dump(p);
156 }
157}
158
159//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
160
161G4double G4VEmModel::ComputeDEDXPerVolume(const G4Material*,
162 const G4ParticleDefinition*,
163 G4double,G4double)
164{
165 return 0.0;
166}
167
168//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
169
170G4double G4VEmModel::CrossSectionPerVolume(const G4Material* material,
171 const G4ParticleDefinition* p,
172 G4double ekin,
173 G4double emin,
174 G4double emax)
175{
176 SetupForMaterial(p, material, ekin);
177 G4double cross = 0.0;
178 const G4ElementVector* theElementVector = material->GetElementVector();
179 const G4double* theAtomNumDensityVector = material->GetVecNbOfAtomsPerVolume();
180 G4int nelm = material->GetNumberOfElements();
181 if(nelm > nsec) {
182 xsec.resize(nelm);
183 nsec = nelm;
184 }
185 for (G4int i=0; i<nelm; i++) {
186 cross += theAtomNumDensityVector[i]*
187 ComputeCrossSectionPerAtom(p,(*theElementVector)[i],ekin,emin,emax);
188 xsec[i] = cross;
189 }
190 return cross;
191}
192
193//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
194
195G4double G4VEmModel::ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
196 G4double, G4double, G4double,
197 G4double, G4double)
198{
199 return 0.0;
200}
201
202//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
203
204G4double G4VEmModel::MinEnergyCut(const G4ParticleDefinition*,
205 const G4MaterialCutsCouple*)
206{
207 return 0.0;
208}
209
210//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
211
212G4double G4VEmModel::GetChargeSquareRatio(const G4ParticleDefinition* p,
213 const G4Material*, G4double)
214{
215 G4double q = p->GetPDGCharge()/CLHEP::eplus;
216 return q*q;
217}
218
219//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
220
221G4double G4VEmModel::GetParticleCharge(const G4ParticleDefinition* p,
222 const G4Material*, G4double)
223{
224 return p->GetPDGCharge();
225}
226
227//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
228
229void G4VEmModel::CorrectionsAlongStep(const G4MaterialCutsCouple*,
230 const G4DynamicParticle*,
231 G4double&,G4double&,G4double)
232{}
233
234//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
235
236void G4VEmModel::SampleDeexcitationAlongStep(const G4Material*,
237 const G4Track&,
238 G4double& )
239{}
240
241//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
242
243G4double G4VEmModel::MaxSecondaryEnergy(const G4ParticleDefinition*,
244 G4double kineticEnergy)
245{
246 return kineticEnergy;
247}
248
249//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
250
251void G4VEmModel::DefineForRegion(const G4Region*)
252{}
253
254//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
255
256void G4VEmModel::SetupForMaterial(const G4ParticleDefinition*,
257 const G4Material*, G4double)
258{}
259
260//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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