source: trunk/source/processes/electromagnetic/standard/include/G4PAIModel.hh@ 1036

Last change on this file since 1036 was 1007, checked in by garnier, 17 years ago

update to geant4.9.2
File size: 6.9 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 *
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//
27// -------------------------------------------------------------------
28//
29// GEANT4 Class header file
30//
31//
32// File name: G4PAIModel
33//
34// Author: V. Grichine based on Vladimir Ivanchenko code
35//
36// Creation date: 05.10.2003
37//
38// Modifications:
39// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
40// 26-09-07 Fixed tmax computation (V.Ivantchenko)
41//
42//
43// Class Description:
44//
45// Implementation of PAI model of energy loss and
46// delta-electron production by heavy charged particles
47
48// -------------------------------------------------------------------
49//
50
51#ifndef G4PAIModel_h
52#define G4PAIModel_h 1
53
54#include <vector>
55#include "G4VEmModel.hh"
56#include "globals.hh"
57#include "G4VEmFluctuationModel.hh"
58#include "G4PAIySection.hh"
59
60class G4PhysicsLogVector;
61class G4PhysicsTable;
62class G4Region;
63class G4MaterialCutsCouple;
64class G4ParticleChangeForLoss;
65
66class G4PAIModel : public G4VEmModel, public G4VEmFluctuationModel
67{
68
69public:
70
71 G4PAIModel(const G4ParticleDefinition* p = 0, const G4String& nam = "PAI");
72
73 virtual ~G4PAIModel();
74
75 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
76
77 virtual void InitialiseMe(const G4ParticleDefinition*) {};
78
79 virtual G4double ComputeDEDX(const G4MaterialCutsCouple*,
80 const G4ParticleDefinition*,
81 G4double kineticEnergy,
82 G4double cutEnergy);
83
84 virtual G4double CrossSection(const G4MaterialCutsCouple*,
85 const G4ParticleDefinition*,
86 G4double kineticEnergy,
87 G4double cutEnergy,
88 G4double maxEnergy);
89
90 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
91 const G4MaterialCutsCouple*,
92 const G4DynamicParticle*,
93 G4double tmin,
94 G4double maxEnergy);
95
96 virtual G4double SampleFluctuations(const G4Material*,
97 const G4DynamicParticle*,
98 G4double&,
99 G4double&,
100 G4double&);
101
102 virtual G4double Dispersion( const G4Material*,
103 const G4DynamicParticle*,
104 G4double&,
105 G4double&);
106
107 void DefineForRegion(const G4Region* r) ;
108 void ComputeSandiaPhotoAbsCof();
109 void BuildPAIonisationTable();
110 void BuildLambdaVector();
111
112 G4double GetdNdxCut( G4int iPlace, G4double transferCut);
113 G4double GetdEdxCut( G4int iPlace, G4double transferCut);
114 G4double GetPostStepTransfer( G4double scaledTkin );
115 G4double GetEnergyTransfer( G4int iPlace,
116 G4double position,
117 G4int iTransfer );
118
119 void SetVerboseLevel(G4int verbose){fVerbose=verbose;};
120
121
122
123protected:
124
125 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
126 G4double kinEnergy);
127
128private:
129
130 void SetParticle(const G4ParticleDefinition* p);
131
132 // hide assignment operator
133 G4PAIModel & operator=(const G4PAIModel &right);
134 G4PAIModel(const G4PAIModel&);
135
136 // The vector over proton kinetic energies: the range of gammas
137 G4int fVerbose;
138 G4double fLowestGamma;
139 G4double fHighestGamma;
140 G4double fLowestKineticEnergy;
141 G4double fHighestKineticEnergy;
142 G4int fTotBin;
143 G4int fMeanNumber;
144 G4PhysicsLogVector* fParticleEnergyVector ;
145 G4PAIySection fPAIySection;
146
147 // vectors
148
149 G4PhysicsTable* fPAItransferTable;
150 std::vector<G4PhysicsTable*> fPAIxscBank;
151
152 G4PhysicsTable* fPAIdEdxTable;
153 std::vector<G4PhysicsTable*> fPAIdEdxBank;
154
155 std::vector<const G4MaterialCutsCouple*> fMaterialCutsCoupleVector;
156 std::vector<const G4Region*> fPAIRegionVector;
157
158 const G4MaterialCutsCouple* fCutCouple;
159 const G4Material* fMaterial;
160 G4double fDeltaCutInKinEnergy;
161
162 size_t fMatIndex ;
163 G4double** fSandiaPhotoAbsCof ;
164 G4int fSandiaIntervalNumber ;
165
166 G4PhysicsLogVector* fdEdxVector ;
167 std::vector<G4PhysicsLogVector*> fdEdxTable ;
168
169 G4PhysicsLogVector* fLambdaVector ;
170 std::vector<G4PhysicsLogVector*> fLambdaTable ;
171
172 G4PhysicsLogVector* fdNdxCutVector ;
173 std::vector<G4PhysicsLogVector*> fdNdxCutTable ;
174
175 const G4ParticleDefinition* fParticle;
176 const G4ParticleDefinition* fElectron;
177 const G4ParticleDefinition* fPositron;
178 G4ParticleChangeForLoss* fParticleChange;
179
180 G4double fMass;
181 G4double fSpin;
182 G4double fChargeSquare;
183 G4double fRatio;
184 G4double fHighKinEnergy;
185 G4double fLowKinEnergy;
186 G4double fTwoln10;
187 G4double fBg2lim;
188 G4double fTaulim;
189 G4double fQc;
190
191 G4bool isInitialised;
192};
193
194/////////////////////////////////////////////////////////////////////
195
196inline G4double G4PAIModel::MaxSecondaryEnergy( const G4ParticleDefinition* p,
197 G4double kinEnergy)
198{
199 G4double tmax = kinEnergy;
200 if(p == fElectron) tmax *= 0.5;
201 else if(p != fPositron) {
202 G4double mass = p->GetPDGMass();
203 G4double ratio= electron_mass_c2/mass;
204 G4double gamma= kinEnergy/mass + 1.0;
205 tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) /
206 (1. + 2.0*gamma*ratio + ratio*ratio);
207 }
208 return tmax;
209}
210
211///////////////////////////////////////////////////////////////
212
213inline void G4PAIModel::DefineForRegion(const G4Region* r)
214{
215 fPAIRegionVector.push_back(r);
216}
217
218#endif
219
220
221
222
223
224
225
Note: See TracBrowser for help on using the repository browser.