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25 // 25 //
>> 26 //
26 ////////////////////////////////////////////// 27 /////////////////////////////////////////////////////////////////////////////////
27 // Class: G4AdjointAlongStepWeightCorrecti << 28 // Class: G4AdjointAlongStepWeightCorrection
28 // Author: L. Desorgher << 29 // Author: L. Desorgher
29 // Organisation: SpaceIT GmbH << 30 // Organisation: SpaceIT GmbH
>> 31 // Contract: ESA contract 21435/08/NL/AT
>> 32 // Customer: ESA/ESTEC
30 ////////////////////////////////////////////// 33 /////////////////////////////////////////////////////////////////////////////////
31 // 34 //
32 // Documentation: << 35 // CHANGE HISTORY
33 // << 36 // --------------
34 // Continuous processes act on adjoint partic << 37 // ChangeHistory:
35 // weight during the adjoint reverse tracking << 38 // 10 May 2007 creation by L. Desorgher
36 // the adjoint cross sections are not scaled << 39 // October 2009 implementation of the mode where the total adjoint and forward cross sections are equivalent. L. Desorgher
37 // section matches the total forward cross se <<
38 // the total adjoint cross section is equal t <<
39 // is used and therefore this along step weig <<
40 // in some cases (some energy ranges) the tot <<
41 // total adjoint cross section can be zero. I <<
42 // correction is needed and is given by exp(- <<
43 // 40 //
44 //-------------------------------------------- 41 //-------------------------------------------------------------
>> 42 // Documentation:
>> 43 // Continuous processes acting on adjoint particles to correct continuously their weight during the adjoint reverse tracking.
>> 44 // 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.
>> 45 // 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
>> 46 // correction factor is 1.
>> 47 // 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
>> 48 // weight correction is neede and is given by exp(-(Sigma_tot_adj-Sigma_tot_fwd).dx)
>> 49 //
>> 50 //
>> 51 //
>> 52
45 53
46 #ifndef G4AdjointAlongStepWeightCorrection_h 54 #ifndef G4AdjointAlongStepWeightCorrection_h
47 #define G4AdjointAlongStepWeightCorrection_h 1 55 #define G4AdjointAlongStepWeightCorrection_h 1
48 56
49 #include "globals.hh" <<
50 #include "G4VContinuousProcess.hh" 57 #include "G4VContinuousProcess.hh"
>> 58 #include "globals.hh"
>> 59 #include "G4Material.hh"
>> 60 #include "G4MaterialCutsCouple.hh"
>> 61 #include "G4Track.hh"
>> 62 #include "G4ParticleChange.hh"
51 63
52 class G4AdjointCSManager; <<
53 class G4MaterialCutsCouple; <<
54 class G4ParticleDefinition; <<
55 class G4ParticleChange; <<
56 class G4Step; 64 class G4Step;
57 class G4Track; << 65 class G4ParticleDefinition;
>> 66
>> 67
58 68
59 class G4AdjointAlongStepWeightCorrection : pub 69 class G4AdjointAlongStepWeightCorrection : public G4VContinuousProcess
60 { 70 {
61 public: << 71 public:
62 explicit G4AdjointAlongStepWeightCorrection( << 72
63 const G4String& name = "ContinuousWeightCo << 73 G4AdjointAlongStepWeightCorrection(const G4String& name = "ContinuousWeightCorrection",
64 G4ProcessType type = fElectromagnetic); << 74 G4ProcessType type = fElectromagnetic);
65 << 75
66 ~G4AdjointAlongStepWeightCorrection() overri << 76 virtual ~G4AdjointAlongStepWeightCorrection();
67 << 77
68 G4VParticleChange* AlongStepDoIt(const G4Tra << 78
69 << 79 protected:
70 void ProcessDescription(std::ostream&) const << 80 virtual G4double GetContinuousStepLimit(const G4Track& track,
71 void DumpInfo() const override { ProcessDesc << 81 G4double previousStepSize,
72 << 82 G4double currentMinimumStep,
73 G4AdjointAlongStepWeightCorrection(G4Adjoint << 83 G4double& currentSafety);
74 delete; << 84
75 G4AdjointAlongStepWeightCorrection& operator << 85
76 const G4AdjointAlongStepWeightCorrection& << 86 //------------------------------------------------------------------------
77 << 87 // Generic methods common to all processes
78 protected: << 88 //------------------------------------------------------------------------
79 G4double GetContinuousStepLimit(const G4Trac << 89 public:
80 G4double pre << 90
81 G4double cur << 91 void PreparePhysicsTable(const G4ParticleDefinition&);
82 G4double& cu << 92
>> 93 void BuildPhysicsTable(const G4ParticleDefinition&);
>> 94
>> 95 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
>> 96
>> 97
>> 98 private:
83 99
84 private: <<
85 void DefineMaterial(const G4MaterialCutsCoup 100 void DefineMaterial(const G4MaterialCutsCouple* couple);
>> 101
86 102
87 const G4MaterialCutsCouple* fCurrentCouple = <<
88 G4AdjointCSManager* fCSManager = nullptr; <<
89 G4ParticleChange* fParticleChange; <<
90 103
91 G4double fPreStepKinEnergy = 1.; << 104 G4AdjointAlongStepWeightCorrection(G4AdjointAlongStepWeightCorrection &);
>> 105 G4AdjointAlongStepWeightCorrection & operator=(const G4AdjointAlongStepWeightCorrection &right);
>> 106
>> 107
>> 108
>> 109 protected:
>> 110
>> 111 G4ParticleChange* fParticleChange;
>> 112
>> 113
>> 114 private:
>> 115
>> 116 const G4Material* currentMaterial;
>> 117 const G4MaterialCutsCouple* currentCouple;
>> 118 size_t currentMaterialIndex;
>> 119 G4double preStepKinEnergy;
>> 120
92 }; 121 };
93 122
94 inline void G4AdjointAlongStepWeightCorrection 123 inline void G4AdjointAlongStepWeightCorrection::DefineMaterial(
95 const G4MaterialCutsCouple* couple) << 124 const G4MaterialCutsCouple* couple)
96 { 125 {
97 if(couple != fCurrentCouple) << 126 if(couple != currentCouple) {
98 { << 127 currentCouple = couple;
99 fCurrentCouple = couple; << 128 currentMaterial = couple->GetMaterial();
>> 129 currentMaterialIndex = couple->GetIndex();
>> 130
100 } 131 }
101 } 132 }
>> 133
>> 134
102 135
103 #endif 136 #endif
104 137