Geant4 Cross Reference |
1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer 3 // * License and Disclaimer * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. 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 // Class: G4AdjointAlongStepWeightCorrecti 27 // Class: G4AdjointAlongStepWeightCorrection 28 // Author: L. Desorgher 28 // Author: L. Desorgher 29 // Organisation: SpaceIT GmbH 29 // Organisation: SpaceIT GmbH 30 ////////////////////////////////////////////// 30 ///////////////////////////////////////////////////////////////////////////////// 31 // 31 // 32 // Documentation: 32 // Documentation: 33 // 33 // 34 // Continuous processes act on adjoint partic 34 // Continuous processes act on adjoint particles to continuously correct their 35 // weight during the adjoint reverse tracking 35 // weight during the adjoint reverse tracking. This process is needed when 36 // the adjoint cross sections are not scaled 36 // the adjoint cross sections are not scaled such that the total adjoint cross 37 // section matches the total forward cross se 37 // section matches the total forward cross section. By default the mode where 38 // the total adjoint cross section is equal t 38 // the total adjoint cross section is equal to the total forward cross section 39 // is used and therefore this along step weig 39 // is used and therefore this along step weightcorrection factor is 1. However 40 // in some cases (some energy ranges) the tot 40 // in some cases (some energy ranges) the total forward cross section or the 41 // total adjoint cross section can be zero. I 41 // total adjoint cross section can be zero. In this case the along step weight 42 // correction is needed and is given by exp(- 42 // correction is needed and is given by exp(-(Sigma_tot_adj-Sigma_tot_fwd).dx) 43 // 43 // 44 //-------------------------------------------- 44 //------------------------------------------------------------- 45 45 46 #ifndef G4AdjointAlongStepWeightCorrection_h 46 #ifndef G4AdjointAlongStepWeightCorrection_h 47 #define G4AdjointAlongStepWeightCorrection_h 1 47 #define G4AdjointAlongStepWeightCorrection_h 1 48 48 49 #include "globals.hh" 49 #include "globals.hh" 50 #include "G4VContinuousProcess.hh" 50 #include "G4VContinuousProcess.hh" 51 51 52 class G4AdjointCSManager; 52 class G4AdjointCSManager; 53 class G4MaterialCutsCouple; 53 class G4MaterialCutsCouple; 54 class G4ParticleDefinition; 54 class G4ParticleDefinition; 55 class G4ParticleChange; 55 class G4ParticleChange; 56 class G4Step; 56 class G4Step; 57 class G4Track; 57 class G4Track; 58 58 59 class G4AdjointAlongStepWeightCorrection : pub 59 class G4AdjointAlongStepWeightCorrection : public G4VContinuousProcess 60 { 60 { 61 public: 61 public: 62 explicit G4AdjointAlongStepWeightCorrection( 62 explicit G4AdjointAlongStepWeightCorrection( 63 const G4String& name = "ContinuousWeightCo 63 const G4String& name = "ContinuousWeightCorrection", 64 G4ProcessType type = fElectromagnetic); 64 G4ProcessType type = fElectromagnetic); 65 65 66 ~G4AdjointAlongStepWeightCorrection() overri 66 ~G4AdjointAlongStepWeightCorrection() override; 67 67 68 G4VParticleChange* AlongStepDoIt(const G4Tra 68 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&) override; 69 69 70 void ProcessDescription(std::ostream&) const 70 void ProcessDescription(std::ostream&) const override; 71 void DumpInfo() const override { ProcessDesc 71 void DumpInfo() const override { ProcessDescription(G4cout); }; 72 72 73 G4AdjointAlongStepWeightCorrection(G4Adjoint 73 G4AdjointAlongStepWeightCorrection(G4AdjointAlongStepWeightCorrection&) = 74 delete; 74 delete; 75 G4AdjointAlongStepWeightCorrection& operator 75 G4AdjointAlongStepWeightCorrection& operator=( 76 const G4AdjointAlongStepWeightCorrection& 76 const G4AdjointAlongStepWeightCorrection& right) = delete; 77 77 78 protected: 78 protected: 79 G4double GetContinuousStepLimit(const G4Trac 79 G4double GetContinuousStepLimit(const G4Track& track, 80 G4double pre 80 G4double previousStepSize, 81 G4double cur 81 G4double currentMinimumStep, 82 G4double& cu 82 G4double& currentSafety) override; 83 83 84 private: 84 private: 85 void DefineMaterial(const G4MaterialCutsCoup 85 void DefineMaterial(const G4MaterialCutsCouple* couple); 86 86 87 const G4MaterialCutsCouple* fCurrentCouple = 87 const G4MaterialCutsCouple* fCurrentCouple = nullptr; 88 G4AdjointCSManager* fCSManager = nullptr; 88 G4AdjointCSManager* fCSManager = nullptr; 89 G4ParticleChange* fParticleChange; 89 G4ParticleChange* fParticleChange; 90 90 91 G4double fPreStepKinEnergy = 1.; 91 G4double fPreStepKinEnergy = 1.; 92 }; 92 }; 93 93 94 inline void G4AdjointAlongStepWeightCorrection 94 inline void G4AdjointAlongStepWeightCorrection::DefineMaterial( 95 const G4MaterialCutsCouple* couple) 95 const G4MaterialCutsCouple* couple) 96 { 96 { 97 if(couple != fCurrentCouple) 97 if(couple != fCurrentCouple) 98 { 98 { 99 fCurrentCouple = couple; 99 fCurrentCouple = couple; 100 } 100 } 101 } 101 } 102 102 103 #endif 103 #endif 104 104