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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 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