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G4AdjointAlongStepWeightCorrection.hh
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26 // $Id: G4AdjointAlongStepWeightCorrection.hh 66892 2013-01-17 10:57:59Z gunter $
27 //
29 // Class: G4AdjointAlongStepWeightCorrection
30 // Author: L. Desorgher
31 // Organisation: SpaceIT GmbH
32 // Contract: ESA contract 21435/08/NL/AT
33 // Customer: ESA/ESTEC
35 //
36 // CHANGE HISTORY
37 // --------------
38 // ChangeHistory:
39 // 10 May 2007 creation by L. Desorgher
40 // October 2009 implementation of the mode where the total adjoint and forward cross sections are equivalent. L. Desorgher
41 //
42 //-------------------------------------------------------------
43 // Documentation:
44 // Continuous processes acting on adjoint particles to correct continuously their weight during the adjoint reverse tracking.
45 // Thi process is needed whene the adjoint cross section are not scaled such that the total adjoint cross section match the total forward cross section.
46 // By default the mode where the total adjoint cross section is equal to the total forward cross section is used an therefore this along step weight
47 // correction factor is 1.
48 // However in some cases (some energy ranges) the total forward cross section or the total adjoint cross section can be null, in this case the along step
49 // weight correction is neede and is given by exp(-(Sigma_tot_adj-Sigma_tot_fwd).dx)
50 //
51 //
52 //
53 
54 
55 #ifndef G4AdjointAlongStepWeightCorrection_h
56 #define G4AdjointAlongStepWeightCorrection_h 1
57 
58 #include "G4VContinuousProcess.hh"
59 #include "globals.hh"
60 #include "G4Material.hh"
61 #include "G4MaterialCutsCouple.hh"
62 #include "G4Track.hh"
63 #include "G4ParticleChange.hh"
64 
65 class G4Step;
67 
68 
69 
71 {
72 public:
73 
74  G4AdjointAlongStepWeightCorrection(const G4String& name = "ContinuousWeightCorrection",
76 
78 
79 
80 protected:
82  G4double previousStepSize,
83  G4double currentMinimumStep,
84  G4double& currentSafety);
85 
86 
87  //------------------------------------------------------------------------
88  // Generic methods common to all processes
89  //------------------------------------------------------------------------
90 public:
91 
93 
95 
97 
98 
99 private:
100 
101  void DefineMaterial(const G4MaterialCutsCouple* couple);
102 
103 
104 
107 
108 
109 
110 protected:
111 
113 
114 
115 private:
116 
121 
122 };
123 
125  const G4MaterialCutsCouple* couple)
126 {
127  if(couple != currentCouple) {
128  currentCouple = couple;
129  currentMaterial = couple->GetMaterial();
130  currentMaterialIndex = couple->GetIndex();
131 
132  }
133 }
134 
135 
136 
137 #endif
const XML_Char * name
Definition: expat.h:151
virtual G4double GetContinuousStepLimit(const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &currentSafety)
double G4double
Definition: G4Types.hh:76
G4ProcessType
G4VParticleChange * AlongStepDoIt(const G4Track &, const G4Step &)
Definition: G4Step.hh:76
G4AdjointAlongStepWeightCorrection & operator=(const G4AdjointAlongStepWeightCorrection &right)
void DefineMaterial(const G4MaterialCutsCouple *couple)
void PreparePhysicsTable(const G4ParticleDefinition &)
G4AdjointAlongStepWeightCorrection(const G4String &name="ContinuousWeightCorrection", G4ProcessType type=fElectromagnetic)
const G4Material * GetMaterial() const
void BuildPhysicsTable(const G4ParticleDefinition &)