G4AdjointBremsstrahlungModel.hh

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//
//
//      Class:    G4AdjointBremsstrahlungModel
//  Author:         L. Desorgher
//  Organisation:   SpaceIT GmbH
//  Contract: ESA contract 21435/08/NL/AT
//  Customer:       ESA/ESTEC
//
// CHANGE HISTORY
// --------------
//      ChangeHistory: 
//    15 June 2007 creation by L. Desorgher. Adapted from G4eBremsstrahlungModel  
//    20-10-2009 Remove all the screening effect that are not considered in the direct models blow 10 GeV. L.Desorgher
//    4-11-2009  Implement the use of a simple biased differential cross section (C(Z)/Egamma) allowing a rapid computation of adjoint CS
//         and rapid sampling of adjoint secondaries. By this way cross section matrices are not used anymore, avoiding a rather 
//         time consuming computation of adjoint brem cross section matrices for each material at initialisation. This mode is switch on/off
//         by selecting SetUseMatrix(false)/ SetUseMatrix(true) in the constructor. L.Desorgher 
//              
//
//-------------------------------------------------------------
//  Documentation:
//    Adjoint Model for e- Bremsstrahlung
//



#ifndef G4AdjointBremsstrahlungModel_h
#define G4AdjointBremsstrahlungModel_h 1
#include "globals.hh"
#include "G4VEmAdjointModel.hh"
#include "G4VEmAngularDistribution.hh"
#include "G4PhysicsTable.hh"
#include "G4EmModelManager.hh"
class G4Timer;
class G4AdjointBremsstrahlungModel: public G4VEmAdjointModel

{
public:

  G4AdjointBremsstrahlungModel(G4VEmModel* aModel);
  G4AdjointBremsstrahlungModel();
  ~G4AdjointBremsstrahlungModel();
  virtual void SampleSecondaries(const G4Track& aTrack,
                                G4bool IsScatProjToProjCase,
        G4ParticleChange* fParticleChange);
  void RapidSampleSecondaries(const G4Track& aTrack,
                                G4bool IsScatProjToProjCase,
        G4ParticleChange* fParticleChange);
  virtual G4double DiffCrossSectionPerVolumePrimToSecond(
                const G4Material* aMaterial,
                                      G4double kinEnergyProj,  // kinetic energy of the primary particle before the interaction 
                                      G4double kinEnergyProd // kinetic energy of the secondary particle 
              ); 
  G4double DiffCrossSectionPerVolumePrimToSecondApproximated1(
                const G4Material* aMaterial,
                                      G4double kinEnergyProj,  // kinetic energy of the primary particle before the interaction 
                                      G4double kinEnergyProd // kinetic energy of the secondary particle 
              ); 
  G4double DiffCrossSectionPerVolumePrimToSecondApproximated2(
                const G4Material* aMaterial,
                                      G4double kinEnergyProj,  // kinetic energy of the primary particle before the interaction 
                                      G4double kinEnergyProd // kinetic energy of the secondary particle 
              ); 
  virtual G4double AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
                     G4double primEnergy,
                     G4bool IsScatProjToProjCase);
  virtual G4double GetAdjointCrossSection(const G4MaterialCutsCouple* aCouple,
                     G4double primEnergy,
                     G4bool IsScatProjToProjCase);
  
 
 // private void InitialiseFwdModels();


private:
  G4VEmModel* theDirectStdBremModel;
  G4EmModelManager* theEmModelManagerForFwdModels;
  G4bool isDirectModelInitialised ;

  G4double highKinEnergy;
  G4double lowKinEnergy, lastCZ;
  std::vector<G4DataVector*> partialSumSigma;
  std::vector<float> SigmaPerAtom; 
  

};


#endif