Gabriele Cosmo
243 lines
9.9 KiB
C++
243 lines
9.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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////////////////////////////////////////////////////////////////////////////////
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// Class: G4AdjointCSManager
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// Author: L. Desorgher
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// Organisation: SpaceIT GmbH
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//
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// Class is responsible for the management of all adjoint cross section
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// matrices, and for the computation of the total forward and adjoint cross
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// sections. Total adjoint and forward cross sections are needed to correct the
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// weight of a particle after a tracking step or after the occurrence of a
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// reverse reaction. It is also used to sample an adjoint secondary from a
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// given adjoint cross section matrix.
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef G4AdjointCSManager_h
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#define G4AdjointCSManager_h 1
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#include "globals.hh"
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#include "G4AdjointCSMatrix.hh"
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#include "G4ThreadLocalSingleton.hh"
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#include <vector>
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class G4Element;
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class G4Material;
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class G4MaterialCutsCouple;
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class G4ParticleDefinition;
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class G4PhysicsTable;
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class G4VEmProcess;
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class G4VEmAdjointModel;
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class G4VEnergyLossProcess;
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class G4AdjointCSManager
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{
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friend class G4ThreadLocalSingleton<G4AdjointCSManager>;
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public:
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~G4AdjointCSManager();
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static G4AdjointCSManager* GetAdjointCSManager();
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G4int GetNbProcesses();
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// Registration of the different models and processes
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size_t RegisterEmAdjointModel(G4VEmAdjointModel*);
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void RegisterEmProcess(G4VEmProcess* aProcess,
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G4ParticleDefinition* aPartDef);
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void RegisterEnergyLossProcess(G4VEnergyLossProcess* aProcess,
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G4ParticleDefinition* aPartDef);
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void RegisterAdjointParticle(G4ParticleDefinition* aPartDef);
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// Building of the CS Matrices and Total Forward and Adjoint LambdaTables
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void BuildCrossSectionMatrices();
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void BuildTotalSigmaTables();
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// Get TotalCrossSections form Total Lambda Tables, Needed for Weight
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// correction and scaling of the
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G4double GetTotalAdjointCS(G4ParticleDefinition* aPartDef, G4double Ekin,
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const G4MaterialCutsCouple* aCouple);
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G4double GetTotalForwardCS(G4ParticleDefinition* aPartDef, G4double Ekin,
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const G4MaterialCutsCouple* aCouple);
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G4double GetAdjointSigma(G4double Ekin_nuc, size_t index_model,
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G4bool is_scat_proj_to_proj,
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const G4MaterialCutsCouple* aCouple);
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void GetEminForTotalCS(G4ParticleDefinition* aPartDef,
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const G4MaterialCutsCouple* aCouple,
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G4double& emin_adj, G4double& emin_fwd);
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void GetMaxFwdTotalCS(G4ParticleDefinition* aPartDef,
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const G4MaterialCutsCouple* aCouple,
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G4double& e_sigma_max, G4double& sigma_max);
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void GetMaxAdjTotalCS(G4ParticleDefinition* aPartDef,
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const G4MaterialCutsCouple* aCouple,
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G4double& e_sigma_max, G4double& sigma_max);
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// CrossSection Correction 1 or FwdCS/AdjCS following the G4boolean value of
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// forward_CS_is_used and forward_CS_mode
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G4double GetCrossSectionCorrection(G4ParticleDefinition* aPartDef,
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G4double PreStepEkin,
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const G4MaterialCutsCouple* aCouple,
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G4bool& fwd_is_used);
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// Cross section mode
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inline void SetFwdCrossSectionMode(G4bool aBool) { fForwardCSMode = aBool; }
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// Weight correction
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G4double GetContinuousWeightCorrection(G4ParticleDefinition* aPartDef,
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G4double PreStepEkin,
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G4double AfterStepEkin,
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const G4MaterialCutsCouple* aCouple,
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G4double step_length);
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G4double GetPostStepWeightCorrection();
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// called by the adjoint model to get the CS, if not otherwise specified
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G4double ComputeAdjointCS(G4Material* aMaterial, G4VEmAdjointModel* aModel,
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G4double PrimEnergy, G4double Tcut,
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G4bool isScatProjToProj,
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std::vector<G4double>& AdjointCS_for_each_element);
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// called by the adjoint model to sample secondary energy from the CS matrix
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G4Element* SampleElementFromCSMatrices(G4Material* aMaterial,
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G4VEmAdjointModel* aModel,
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G4double PrimEnergy, G4double Tcut,
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G4bool isScatProjToProj);
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// Total Adjoint CS is computed at initialisation phase
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G4double ComputeTotalAdjointCS(const G4MaterialCutsCouple* aMatCutCouple,
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G4ParticleDefinition* aPart,
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G4double PrimEnergy);
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G4ParticleDefinition* GetAdjointParticleEquivalent(
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G4ParticleDefinition* theFwdPartDef);
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G4ParticleDefinition* GetForwardParticleEquivalent(
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G4ParticleDefinition* theAdjPartDef);
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// inline
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inline void SetIon(G4ParticleDefinition* adjIon, G4ParticleDefinition* fwdIon)
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{
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fAdjIon = adjIon;
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fFwdIon = fwdIon;
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}
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private:
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G4AdjointCSManager();
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void DefineCurrentMaterial(const G4MaterialCutsCouple* couple);
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void DefineCurrentParticle(const G4ParticleDefinition* aPartDef);
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G4double ComputeAdjointCS(G4double aPrimEnergy,
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G4AdjointCSMatrix* anAdjointCSMatrix,
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G4double Tcut);
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std::vector<G4AdjointCSMatrix*> BuildCrossSectionsModelAndElement(
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G4VEmAdjointModel* aModel, G4int Z, G4int A, G4int nbin_pro_decade);
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std::vector<G4AdjointCSMatrix*> BuildCrossSectionsModelAndMaterial(
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G4VEmAdjointModel* aModel, G4Material* aMaterial, G4int nbin_pro_decade);
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static constexpr G4double fTmin = 0.1 * CLHEP::keV;
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static constexpr G4double fTmax = 100. * CLHEP::TeV;
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// fNbins chosen to avoid error
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// in the CS value close to CS jump. (For example at Tcut)
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static constexpr G4int fNbins = 320;
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static G4ThreadLocal G4AdjointCSManager* fInstance;
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// only one ion can be considered by simulation
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G4ParticleDefinition* fAdjIon = nullptr;
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G4ParticleDefinition* fFwdIon = nullptr;
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G4MaterialCutsCouple* fCurrentCouple = nullptr;
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G4Material* fCurrentMaterial = nullptr;
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// x dim is for G4VAdjointEM*, y dim is for elements
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std::vector<std::vector<G4AdjointCSMatrix*>>
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fAdjointCSMatricesForScatProjToProj;
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std::vector<std::vector<G4AdjointCSMatrix*>> fAdjointCSMatricesForProdToProj;
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std::vector<G4VEmAdjointModel*> fAdjointModels;
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std::vector<size_t> fIndexOfAdjointEMModelInAction;
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std::vector<G4bool> fIsScatProjToProj;
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std::vector<std::vector<G4double>> fLastAdjointCSVsModelsAndElements;
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// total adjoint and total forward cross section table in function of material
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// and in function of adjoint particle type
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std::vector<G4PhysicsTable*> fTotalFwdSigmaTable;
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std::vector<G4PhysicsTable*> fTotalAdjSigmaTable;
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// Sigma table for each G4VAdjointEMModel
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std::vector<G4PhysicsTable*> fSigmaTableForAdjointModelScatProjToProj;
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std::vector<G4PhysicsTable*> fSigmaTableForAdjointModelProdToProj;
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std::vector<std::vector<G4double>> fEminForFwdSigmaTables;
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std::vector<std::vector<G4double>> fEminForAdjSigmaTables;
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std::vector<std::vector<G4double>> fEkinofFwdSigmaMax;
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std::vector<std::vector<G4double>> fEkinofAdjSigmaMax;
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// list of forward G4VEmProcess and of G4VEnergyLossProcess for the different
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// adjoint particle
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std::vector<std::vector<G4VEmProcess*>*> fForwardProcesses;
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std::vector<std::vector<G4VEnergyLossProcess*>*> fForwardLossProcesses;
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// list of adjoint particles considered
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std::vector<G4ParticleDefinition*> fAdjointParticlesInAction;
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G4double fMassRatio = 1.; // ion
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G4double fLastCSCorrectionFactor = 1.;
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size_t fCurrentParticleIndex = 0;
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size_t fCurrentMatIndex = 0;
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G4bool fCSMatricesBuilt = false;
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G4bool fSigmaTableBuilt = false;
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G4bool fForwardCSUsed = true;
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G4bool fForwardCSMode = true;
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// Two CS mode are possible:
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// 1) fForwardCSMode = false, the Adjoint CS are used as it is implying
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// an AlongStep Weight Correction.
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// 2) fForwardCSMode = true, the Adjoint CS are scaled to have the total
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// adjoint CS equal to the fwd one implying a PostStep Weight Correction.
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// For energies where the total Fwd CS or the total adjoint CS are zero,
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// the scaling is not possible and fForwardCSUsed is set to false
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};
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#endif
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