Geant4_10
G4WentzelVIRelModel.hh
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26 // $Id: G4WentzelVIRelModel.hh 66592 2012-12-23 09:34:55Z vnivanch $
27 //
28 // -------------------------------------------------------------------
29 //
30 //
31 // GEANT4 Class header file
32 //
33 //
34 // File name: G4WentzelVIRelModel
35 //
36 // Author: V.Ivanchenko
37 //
38 // Creation date: 08.06.2012 from G4WentzelVIModel
39 //
40 // Modifications:
41 //
42 // Class Description:
43 //
44 // Implementation of the model of multiple scattering based on
45 // G.Wentzel, Z. Phys. 40 (1927) 590.
46 // H.W.Lewis, Phys Rev 78 (1950) 526.
47 // J.M. Fernandez-Varea et al., NIM B73 (1993) 447.
48 // L.Urban, CERN-OPEN-2006-077.
49 
50 // -------------------------------------------------------------------
51 //
52 
53 #ifndef G4WentzelVIRelModel_h
54 #define G4WentzelVIRelModel_h 1
55 
56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
57 
58 #include "G4VMscModel.hh"
59 #include "G4MaterialCutsCouple.hh"
61 
63 class G4LossTableManager;
64 class G4NistManager;
65 class G4Pow;
66 
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 
70 {
71 
72 public:
73 
74  G4WentzelVIRelModel(const G4String& nam = "WentzelVIUni");
75 
76  virtual ~G4WentzelVIRelModel();
77 
78  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
79 
80  void StartTracking(G4Track*);
81 
83  G4double KineticEnergy,
84  G4double AtomicNumber,
85  G4double AtomicWeight=0.,
86  G4double cut = DBL_MAX,
87  G4double emax= DBL_MAX);
88 
90  G4double safety);
91 
92  virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
93  G4double& currentMinimalStep);
94 
95  virtual G4double ComputeGeomPathLength(G4double truePathLength);
96 
97  virtual G4double ComputeTrueStepLength(G4double geomStepLength);
98 
99 private:
100 
101  G4double ComputeXSectionPerVolume();
102 
103  inline void SetupParticle(const G4ParticleDefinition*);
104 
105  inline void DefineMaterial(const G4MaterialCutsCouple*);
106 
107  // hide assignment operator
108  G4WentzelVIRelModel & operator=(const G4WentzelVIRelModel &right);
110 
111  G4LossTableManager* theManager;
112  G4NistManager* fNistManager;
113  G4ParticleChangeForMSC* fParticleChange;
114  G4WentzelVIRelXSection* wokvi;
115  G4Pow* fG4pow;
116 
117  const G4DataVector* currentCuts;
118 
119  G4double tlimitminfix;
120  G4double invsqrt12;
121 
122  // cache kinematics
123  G4double preKinEnergy;
124  G4double tPathLength;
125  G4double zPathLength;
126  G4double lambdaeff;
127  G4double currentRange;
128 
129  // data for single scattering mode
130  G4double xtsec;
131  std::vector<G4double> xsecn;
132  std::vector<G4double> prob;
133  G4int nelments;
134 
135  G4double numlimit;
136 
137  // cache material
138  G4int currentMaterialIndex;
139  const G4MaterialCutsCouple* currentCouple;
140  const G4Material* currentMaterial;
141 
142  // single scattering parameters
143  G4double cosThetaMin;
144  G4double cosThetaMax;
145  G4double cosTetMaxNuc;
146 
147  // projectile
148  const G4ParticleDefinition* particle;
149  G4double lowEnergyLimit;
150 
151  // flags
152  G4bool inside;
153  G4bool singleScatteringMode;
154 };
155 
156 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
158 
159 inline
160 void G4WentzelVIRelModel::DefineMaterial(const G4MaterialCutsCouple* cup)
161 {
162  if(cup != currentCouple) {
163  currentCouple = cup;
164  SetCurrentCouple(cup);
165  currentMaterial = cup->GetMaterial();
166  currentMaterialIndex = currentCouple->GetIndex();
167  }
168 }
169 
170 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
171 
172 inline void G4WentzelVIRelModel::SetupParticle(const G4ParticleDefinition* p)
173 {
174  // Initialise mass and charge
175  if(p != particle) {
176  particle = p;
177  wokvi->SetupParticle(p);
178  }
179 }
180 
181 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
182 
183 #endif
184 
void StartTracking(G4Track *)
virtual G4double ComputeTruePathLengthLimit(const G4Track &track, G4double &currentMinimalStep)
virtual G4ThreeVector & SampleScattering(const G4ThreeVector &, G4double safety)
Definition: G4Pow.hh:56
const char * p
Definition: xmltok.h:285
G4WentzelVIRelModel(const G4String &nam="WentzelVIUni")
virtual G4double ComputeGeomPathLength(G4double truePathLength)
virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition *, G4double KineticEnergy, G4double AtomicNumber, G4double AtomicWeight=0., G4double cut=DBL_MAX, G4double emax=DBL_MAX)
int G4int
Definition: G4Types.hh:78
void SetupParticle(const G4ParticleDefinition *)
bool G4bool
Definition: G4Types.hh:79
virtual void Initialise(const G4ParticleDefinition *, const G4DataVector &)
void SetCurrentCouple(const G4MaterialCutsCouple *)
Definition: G4VEmModel.hh:419
virtual G4double ComputeTrueStepLength(G4double geomStepLength)
double G4double
Definition: G4Types.hh:76
#define DBL_MAX
Definition: templates.hh:83
const G4Material * GetMaterial() const