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Desorgher << 31 // Author: L. Desorgher 29 // Organisation: SpaceIT GmbH << 32 // Organisation: SpaceIT GmbH >> 33 // Contract: ESA contract 21435/08/NL/AT >> 34 // Customer: ESA/ESTEC 30 ////////////////////////////////////////////// 35 ///////////////////////////////////////////////////////////////////////////////// 31 // 36 // 32 // Documentation: << 37 // CHANGE HISTORY 33 // << 38 // -------------- 34 // Continuous processes act on adjoint partic << 39 // ChangeHistory: 35 // weight during the adjoint reverse tracking << 40 // 10 May 2007 creation by L. Desorgher 36 // the adjoint cross sections are not scaled << 41 // 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 // 42 // 44 //-------------------------------------------- 43 //------------------------------------------------------------- >> 44 // Documentation: >> 45 // Continuous processes acting on adjoint particles to correct continuously their weight during the adjoint reverse tracking. >> 46 // 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. >> 47 // 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 >> 48 // correction factor is 1. >> 49 // 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 >> 50 // weight correction is neede and is given by exp(-(Sigma_tot_adj-Sigma_tot_fwd).dx) >> 51 // >> 52 // >> 53 // >> 54 45 55 46 #ifndef G4AdjointAlongStepWeightCorrection_h 56 #ifndef G4AdjointAlongStepWeightCorrection_h 47 #define G4AdjointAlongStepWeightCorrection_h 1 57 #define G4AdjointAlongStepWeightCorrection_h 1 48 58 49 #include "globals.hh" << 50 #include "G4VContinuousProcess.hh" 59 #include "G4VContinuousProcess.hh" >> 60 #include "globals.hh" >> 61 #include "G4Material.hh" >> 62 #include "G4MaterialCutsCouple.hh" >> 63 #include "G4Track.hh" >> 64 #include "G4ParticleChange.hh" 51 65 52 class G4AdjointCSManager; << 53 class G4MaterialCutsCouple; << 54 class G4ParticleDefinition; << 55 class G4ParticleChange; << 56 class G4Step; 66 class G4Step; 57 class G4Track; << 67 class G4ParticleDefinition; >> 68 >> 69 58 70 59 class G4AdjointAlongStepWeightCorrection : pub 71 class G4AdjointAlongStepWeightCorrection : public G4VContinuousProcess 60 { 72 { 61 public: << 73 public: 62 explicit G4AdjointAlongStepWeightCorrection( << 74 63 const G4String& name = "ContinuousWeightCo << 75 G4AdjointAlongStepWeightCorrection(const G4String& name = "ContinuousWeightCorrection", 64 G4ProcessType type = fElectromagnetic); << 76 G4ProcessType type = fElectromagnetic); 65 << 77 66 ~G4AdjointAlongStepWeightCorrection() overri << 78 virtual ~G4AdjointAlongStepWeightCorrection(); 67 << 79 68 G4VParticleChange* AlongStepDoIt(const G4Tra << 80 69 << 81 protected: 70 void ProcessDescription(std::ostream&) const << 82 virtual G4double GetContinuousStepLimit(const G4Track& track, 71 void DumpInfo() const override { ProcessDesc << 83 G4double previousStepSize, 72 << 84 G4double currentMinimumStep, 73 G4AdjointAlongStepWeightCorrection(G4Adjoint << 85 G4double& currentSafety); 74 delete; << 86 75 G4AdjointAlongStepWeightCorrection& operator << 87 76 const G4AdjointAlongStepWeightCorrection& << 88 //------------------------------------------------------------------------ 77 << 89 // Generic methods common to all processes 78 protected: << 90 //------------------------------------------------------------------------ 79 G4double GetContinuousStepLimit(const G4Trac << 91 public: 80 G4double pre << 92 81 G4double cur << 93 void PreparePhysicsTable(const G4ParticleDefinition&); 82 G4double& cu << 94 >> 95 void BuildPhysicsTable(const G4ParticleDefinition&); >> 96 >> 97 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&); >> 98 >> 99 >> 100 private: 83 101 84 private: << 85 void DefineMaterial(const G4MaterialCutsCoup 102 void DefineMaterial(const G4MaterialCutsCouple* couple); >> 103 86 104 87 const G4MaterialCutsCouple* fCurrentCouple = << 88 G4AdjointCSManager* fCSManager = nullptr; << 89 G4ParticleChange* fParticleChange; << 90 105 91 G4double fPreStepKinEnergy = 1.; << 106 G4AdjointAlongStepWeightCorrection(G4AdjointAlongStepWeightCorrection &); >> 107 G4AdjointAlongStepWeightCorrection & operator=(const G4AdjointAlongStepWeightCorrection &right); >> 108 >> 109 >> 110 >> 111 protected: >> 112 >> 113 G4ParticleChange* fParticleChange; >> 114 >> 115 >> 116 private: >> 117 >> 118 const G4Material* currentMaterial; >> 119 const G4MaterialCutsCouple* currentCouple; >> 120 size_t currentMaterialIndex; >> 121 G4double currentTcut; >> 122 G4double preStepKinEnergy; >> 123 92 }; 124 }; 93 125 94 inline void G4AdjointAlongStepWeightCorrection 126 inline void G4AdjointAlongStepWeightCorrection::DefineMaterial( 95 const G4MaterialCutsCouple* couple) << 127 const G4MaterialCutsCouple* couple) 96 { 128 { 97 if(couple != fCurrentCouple) << 129 if(couple != currentCouple) { 98 { << 130 currentCouple = couple; 99 fCurrentCouple = couple; << 131 currentMaterial = couple->GetMaterial(); >> 132 currentMaterialIndex = couple->GetIndex(); >> 133 100 } 134 } 101 } 135 } >> 136 >> 137 102 138 103 #endif 139 #endif 104 140