G4AdjointCSManager.hh

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// $Id: G4AdjointCSManager.hh 69844 2013-05-16 09:19:33Z gcosmo $
//
//      Class:          G4AdjointCSManager
//      Author:         L. Desorgher
//      Organisation:   SpaceIT GmbH
//      Contract:       ESA contract 21435/08/NL/AT
//      Customer:       ESA/ESTEC
//
// CHANGE HISTORY
// --------------
//      ChangeHistory: 
//              1st April 2007 creation by L. Desorgher                 
//              
//              September-October 2009. Implementation of the mode where the adjoint cross sections are scaled such that the total used adjoint cross sections is in 
//              most of the cases equal to the total forward cross section. L.Desorgher
//
//-------------------------------------------------------------
//      Documentation:
//              Is responsible for the management of all adjoint cross sections matrices, and for the computation of the total forward and adjoint cross sections.
//              Total adjoint and forward cross sections are needed to correct the weight of a particle after a tracking step or after the occurence of a reverse reaction. 
//              It is also used to sample an adjoint secondary from a given adjoint cross section matrix.
//
#ifndef G4AdjointCSManager_h
#define G4AdjointCSManager_h 1

#include"globals.hh"
#include<vector>
#include"G4AdjointCSMatrix.hh"


class G4VEmAdjointModel;
class G4MaterialCutsCouple;
class G4Material;
class G4ParticleDefinition;
class G4Element;
class G4VEmProcess;
class G4VEnergyLossProcess;
class G4PhysicsTable;

//
class G4AdjointCSManager
{
        
  public:
        ~G4AdjointCSManager();
        static G4AdjointCSManager* GetAdjointCSManager();

  public:
        G4int GetNbProcesses();
        
        //Registration of the different models and processes
        
        size_t RegisterEmAdjointModel(G4VEmAdjointModel*);
        
        void RegisterEmProcess(G4VEmProcess* aProcess, G4ParticleDefinition* aPartDef);
        
        void RegisterEnergyLossProcess(G4VEnergyLossProcess* aProcess, G4ParticleDefinition* aPartDef);
        
        void RegisterAdjointParticle(G4ParticleDefinition* aPartDef);
        
        //Building of the CS Matrices and Total Forward and Adjoint LambdaTables
        //----------------------------------------------------------------------
        
        void BuildCrossSectionMatrices();
        void BuildTotalSigmaTables();
        
        
        //Get TotalCrossSections form Total Lambda Tables, Needed for Weight correction and scaling of the 
        //-------------------------------------------------
        G4double GetTotalAdjointCS(G4ParticleDefinition* aPartDef, G4double Ekin,
                                     const G4MaterialCutsCouple* aCouple);
        G4double GetTotalForwardCS(G4ParticleDefinition* aPartDef, G4double Ekin,
                                     const G4MaterialCutsCouple* aCouple);
        
        G4double GetAdjointSigma(G4double Ekin_nuc, size_t index_model,G4bool is_scat_proj_to_proj,
                                     const G4MaterialCutsCouple* aCouple);
        
        void GetEminForTotalCS(G4ParticleDefinition* aPartDef,
                                     const G4MaterialCutsCouple* aCouple, G4double& emin_adj, G4double& emin_fwd);
        void GetMaxFwdTotalCS(G4ParticleDefinition* aPartDef,
                                     const G4MaterialCutsCouple* aCouple, G4double& e_sigma_max, G4double& sigma_max);
        void GetMaxAdjTotalCS(G4ParticleDefinition* aPartDef,
                                     const G4MaterialCutsCouple* aCouple, G4double& e_sigma_max, G4double& sigma_max);
                                     
                                                                                     
        
        //CrossSection Correction  1 or FwdCS/AdjCS following the G4boolean value of forward_CS_is_used and forward_CS_mode
        //-------------------------------------------------
        G4double GetCrossSectionCorrection(G4ParticleDefinition* aPartDef,G4double PreStepEkin,const G4MaterialCutsCouple* aCouple, G4bool& fwd_is_used, G4double& fwd_TotCS);
        
        
        //Cross section mode
        //------------------
        inline void SetFwdCrossSectionMode(G4bool aBool){forward_CS_mode=aBool;}
        
        
        //Weight correction 
        //------------------
        
        G4double GetContinuousWeightCorrection(G4ParticleDefinition* aPartDef, G4double PreStepEkin,G4double AfterStepEkin,
                                     const G4MaterialCutsCouple* aCouple, G4double step_length);
        G4double GetPostStepWeightCorrection();
                                     
        
        
        
        //Method Called by the adjoint model to get there CS, if not precised otherwise
        //-------------------------------
        
        G4double ComputeAdjointCS(G4Material* aMaterial,
                                            G4VEmAdjointModel* aModel, 
                                            G4double PrimEnergy,
                                            G4double Tcut,
                                            G4bool IsScatProjToProjCase,
                                            std::vector<G4double>& 
                                                 AdjointCS_for_each_element);
                                         
        //Method Called by the adjoint model to sample the secondary energy form the CS matrix
        //--------------------------------------------------------------------------------
        G4Element*  SampleElementFromCSMatrices(G4Material* aMaterial,
                                                       G4VEmAdjointModel* aModel,
                                                       G4double PrimEnergy,
                                                        G4double Tcut,
                                                       G4bool IsScatProjToProjCase);
                                                       
                                                       
        //Total Adjoint CS  is computed at initialisation phase 
        //-----------------------------------------------------                                        
        G4double ComputeTotalAdjointCS(const G4MaterialCutsCouple* aMatCutCouple,G4ParticleDefinition* aPart,G4double PrimEnergy);
        
        
        
                                                                
        G4ParticleDefinition* GetAdjointParticleEquivalent(G4ParticleDefinition* theFwdPartDef);
        G4ParticleDefinition* GetForwardParticleEquivalent(G4ParticleDefinition* theAdjPartDef);
        
        //inline
        inline void SetTmin(G4double aVal){Tmin=aVal;}
        inline void SetTmax(G4double aVal){Tmax=aVal;}
        inline void SetNbins(G4int aInt){nbins=aInt;}
        inline void SetIon(G4ParticleDefinition* adjIon,
                           G4ParticleDefinition* fwdIon) {theAdjIon=adjIon; theFwdIon =fwdIon;}
        
        
  private:
        static  G4AdjointCSManager* theInstance;
        std::vector< std::vector<G4AdjointCSMatrix*> > theAdjointCSMatricesForScatProjToProj; //x dim is for G4VAdjointEM* while y dim is for elements
        std::vector< std::vector<G4AdjointCSMatrix*> > theAdjointCSMatricesForProdToProj;
        std::vector< G4VEmAdjointModel*> listOfAdjointEMModel;
                
        std::vector<G4AdjointCSMatrix*> 
                                BuildCrossSectionsMatricesForAGivenModelAndElement(G4VEmAdjointModel* aModel,
                                                                                   G4int Z,
                                                                                   G4int A,
                                                                                   G4int nbin_pro_decade);
        
        std::vector<G4AdjointCSMatrix*> 
                                BuildCrossSectionsMatricesForAGivenModelAndMaterial(G4VEmAdjointModel* aModel,
                                                                                   G4Material* aMaterial,
                                                                                   G4int nbin_pro_decade);
        
        
        G4Material* lastMaterial;
        G4double    lastPrimaryEnergy;
        G4double    lastTcut;   
        std::vector< size_t> listOfIndexOfAdjointEMModelInAction;
        std::vector< G4bool> listOfIsScatProjToProjCase;
        std::vector< std::vector<G4double> > lastAdjointCSVsModelsAndElements;
        G4bool CrossSectionMatrixesAreBuilt;
        size_t  currentParticleIndex;
        G4ParticleDefinition* currentParticleDef;
        
        //total adjoint and total forward cross section table in function of material and in function of adjoint particle type
        //--------------------------------------------------------------------------------------------------------------------
        std::vector<G4PhysicsTable*>        theTotalForwardSigmaTableVector;
        std::vector<G4PhysicsTable*>        theTotalAdjointSigmaTableVector;
        std::vector< std::vector<G4double> >    EminForFwdSigmaTables;  
        std::vector< std::vector<G4double> >    EminForAdjSigmaTables;  
        std::vector< std::vector<G4double> >    EkinofFwdSigmaMax;      
        std::vector< std::vector<G4double> >    EkinofAdjSigmaMax;
        G4bool TotalSigmaTableAreBuilt;
        
        //Sigma tavle for each G4VAdjointEMModel 
        std::vector<G4PhysicsTable*>        listSigmaTableForAdjointModelScatProjToProj;
        std::vector<G4PhysicsTable*>        listSigmaTableForAdjointModelProdToProj;
        

        
         
        //list of forward G4VEMLossProcess and of G4VEMProcess for the different adjoint particle
        //--------------------------------------------------------------
        std::vector< std::vector<G4VEmProcess*>* >              listOfForwardEmProcess;
        std::vector< std::vector<G4VEnergyLossProcess*>* >      listOfForwardEnergyLossProcess;
        
        //list of adjoint particles considered
        //--------------------------------------------------------------
        std::vector< G4ParticleDefinition*> theListOfAdjointParticlesInAction;
        
        
        G4double Tmin,Tmax;
        G4int nbins;
        
        
        //Current material
        //----------------
        G4MaterialCutsCouple* currentCouple;  
        G4Material* currentMaterial;
        size_t  currentMatIndex;
        
        G4int verbose;
        
        
        
        
        //Two CS mode are possible :forward_CS_mode = false the Adjoint CS are used as it is implying a AlongStep Weight Correction.
        //                         :forward_CS_mode = true the Adjoint CS are scaled to have the total adjoint CS eual to the fwd one implying a PostStep Weight Correction.
        //                                           For energy range  where the total FwdCS or the total adjoint CS are null, the scaling is not possble and
        //                                           forward_CS_is_used is set to false         
        //--------------------------------------------
        G4bool forward_CS_is_used;
        G4bool forward_CS_mode;
        
        //Adj and Fwd CS values for re-use 
        //------------------------
        
        G4double PreadjCS,PostadjCS;
        G4double PrefwdCS,PostfwdCS;
        G4double LastEkinForCS;
        G4double LastCSCorrectionFactor;
        G4ParticleDefinition* lastPartDefForCS;
        
        //Ion
        //----------------
        G4ParticleDefinition* theAdjIon; //at the moment Only one ion can be considered by simulation
        G4ParticleDefinition* theFwdIon;
        G4double massRatio;
        
        
        

  private:
        G4AdjointCSManager();  
        void DefineCurrentMaterial(const G4MaterialCutsCouple* couple);
        void DefineCurrentParticle(const G4ParticleDefinition* aPartDef);
        G4double ComputeAdjointCS(G4double aPrimEnergy, G4AdjointCSMatrix* anAdjointCSMatrix, G4double Tcut);
        size_t eindex;

};
#endif

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