source: trunk/source/processes/electromagnetic/utils/include/G4VMscModel.hh@ 1347

Last change on this file since 1347 was 1340, checked in by garnier, 15 years ago

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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: G4VMscModel.hh,v 1.10 2010/09/07 16:05:33 vnivanch Exp $
27// GEANT4 tag $Name: emutils-V09-03-23 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class header file
32//
33//
34// File name: G4VMscModel
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 07.03.2008
39//
40// Modifications:
41// 07.04.2009 V.Ivanchenko moved msc methods from G4VEmModel to G4VMscModel
42//
43// Class Description:
44//
45// General interface to msc models
46
47// -------------------------------------------------------------------
48//
49
50#ifndef G4VMscModel_h
51#define G4VMscModel_h 1
52
53#include "G4VEmModel.hh"
54#include "G4MscStepLimitType.hh"
55#include "globals.hh"
56#include "G4ThreeVector.hh"
57#include "G4Track.hh"
58#include "G4SafetyHelper.hh"
59
60class G4ParticleChangeForMSC;
61
62class G4VMscModel : public G4VEmModel
63{
64
65public:
66
67 G4VMscModel(const G4String& nam);
68
69 virtual ~G4VMscModel();
70
71 virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
72 G4PhysicsTable* theLambdaTable,
73 G4double currentMinimalStep);
74
75 virtual G4double ComputeGeomPathLength(G4double truePathLength);
76
77 virtual G4double ComputeTrueStepLength(G4double geomPathLength);
78
79 virtual void SampleScattering(const G4DynamicParticle*,
80 G4double safety);
81
82 // empty
83 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
84 const G4MaterialCutsCouple*,
85 const G4DynamicParticle*,
86 G4double tmin,
87 G4double tmax);
88
89 //================================================================
90 // Set parameters of multiple scattering models
91 //================================================================
92
93 inline void SetStepLimitType(G4MscStepLimitType);
94
95 inline void SetLateralDisplasmentFlag(G4bool val);
96
97 inline void SetRangeFactor(G4double);
98
99 inline void SetGeomFactor(G4double);
100
101 inline void SetSkin(G4double);
102
103 inline void SetSampleZ(G4bool);
104
105protected:
106
107 // initialisation of the ParticleChange for the model
108 G4ParticleChangeForMSC* GetParticleChangeForMSC();
109
110 // initialisation of interface with geometry
111 void InitialiseSafetyHelper();
112
113 // shift point of the track PostStep
114 void ComputeDisplacement(G4ParticleChangeForMSC*,
115 const G4ThreeVector& displDir,
116 G4double displacement,
117 G4double postsafety);
118
119 // compute safety
120 inline G4double ComputeSafety(const G4ThreeVector& position, G4double limit);
121
122 // compute linear distance to a geometry boundary
123 inline G4double ComputeGeomLimit(const G4Track& position, G4double& presafety,
124 G4double limit);
125
126private:
127
128 // hide assignment operator
129 G4VMscModel & operator=(const G4VMscModel &right);
130 G4VMscModel(const G4VMscModel&);
131
132 G4SafetyHelper* safetyHelper;
133
134protected:
135
136 G4double facrange;
137 G4double facgeom;
138 G4double facsafety;
139 G4double skin;
140 G4double dtrl;
141 G4double lambdalimit;
142 G4double geomMin;
143 G4double geomMax;
144
145 G4MscStepLimitType steppingAlgorithm;
146
147 G4bool samplez;
148 G4bool latDisplasment;
149
150};
151
152//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
153//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
154
155inline void G4VMscModel::SetLateralDisplasmentFlag(G4bool val)
156{
157 latDisplasment = val;
158}
159
160//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
161
162inline void G4VMscModel::SetSkin(G4double val)
163{
164 skin = val;
165}
166
167//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
168
169inline void G4VMscModel::SetRangeFactor(G4double val)
170{
171 facrange = val;
172}
173
174//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
175
176inline void G4VMscModel::SetGeomFactor(G4double val)
177{
178 facgeom = val;
179}
180
181//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
182
183inline void G4VMscModel::SetStepLimitType(G4MscStepLimitType val)
184{
185 steppingAlgorithm = val;
186}
187
188//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
189
190inline void G4VMscModel::SetSampleZ(G4bool val)
191{
192 samplez = val;
193}
194
195//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
196
197inline G4double G4VMscModel::ComputeSafety(const G4ThreeVector& position,
198 G4double)
199{
200 return safetyHelper->ComputeSafety(position);
201}
202
203//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
204
205inline G4double G4VMscModel::ComputeGeomLimit(const G4Track& track,
206 G4double& presafety,
207 G4double limit)
208{
209 G4double res = geomMax;
210 if(track.GetVolume() != safetyHelper->GetWorldVolume()) {
211 res = safetyHelper->CheckNextStep(
212 track.GetStep()->GetPreStepPoint()->GetPosition(),
213 track.GetMomentumDirection(),
214 limit, presafety);
215 }
216 return res;
217}
218
219//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
220
221#endif
222
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