G4AdjointCSManager.hh

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// $Id$
//
/////////////////////////////////////////////////////////////////////////////////
//      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