G4AdjointCSManager.hh

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// $Id: G4AdjointCSManager.hh 93569 2015-10-26 14:53:21Z 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"
#include "G4ThreadLocalSingleton.hh"

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

//
class G4AdjointCSManager
{

  friend class G4ThreadLocalSingleton<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 G4ThreadLocal  G4AdjointCSManager* theInstance;
    std::vector< std::vector<G4AdjointCSMatrix*> > theAdjointCSMatricesForScatProjToProj; //x dim is for G4VAdjointEM*, 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