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

Last change on this file was 1340, checked in by garnier, 14 years ago

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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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