G4PAIxSection.hh

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// $Id: G4PAIxSection.hh 75582 2013-11-04 12:13:01Z gcosmo $
//
// 
// G4PAIxSection.hh -- header file
//
// GEANT 4 class header file --- Copyright CERN 1995
// CERB Geneva Switzerland
//
// for information related to this code, please, contact
// CERN, CN Division, ASD Group
//
// Preparation of ionizing collision cross section according to Photo Absorption 
// Ionization (PAI) model for simulation of ionization energy losses in very thin
// absorbers. Author: Vladimir.Grichine@cern.ch
//
// History:
//
// 28.10.11, V. Ivanchenko: Migration of exceptions to the new design 
// 19.10.03, V. Grichine: Integral dEdx was added for G4PAIModel class 
// 13.05.03, V. Grichine: Numerical instability was fixed in SumOverInterval/Border 
//                        functions
// 10.02.02, V. Grichine: New functions and arrays/gets for Cerenkov and 
//                        plasmon collisions dN/dx
// 27.10.99, V. Grichine: Bug fixed in constructors, 3rd constructor and 
//                        GetStepEnergyLoss(step) were added, fDelta = 0.005
// 30.11.97, V. Grichine: 2nd version 
// 11.06.97, V. Grichine: 1st version

#ifndef G4PAIXSECTION_HH
#define G4PAIXSECTION_HH

#include "G4ios.hh"
#include "globals.hh"
#include "Randomize.hh"

#include"G4SandiaTable.hh"

class G4MaterialCutsCouple;
class G4Sandiatable;


class G4PAIxSection
{
public:
      // Constructors
  G4PAIxSection();
  G4PAIxSection( G4MaterialCutsCouple* matCC);
      
  G4PAIxSection( G4int materialIndex,
                     G4double maxEnergyTransfer   );
      
  G4PAIxSection( G4int materialIndex,           // for proton loss table
                 G4double maxEnergyTransfer,
                 G4double betaGammaSq ,
                         G4double** photoAbsCof, G4int intNumber         );

  G4PAIxSection( G4int materialIndex,           // test constructor
                 G4double maxEnergyTransfer,
                 G4double betaGammaSq          );
      
      // G4PAIxSection(const G4PAIxSection& right);
      
      // Destructor
      
          ~G4PAIxSection();

  void Initialize(const G4Material* material, 
          G4double maxEnergyTransfer, G4double betaGammaSq, G4SandiaTable*);
      
      // Operators
          // G4PAIxSection& operator=(const G4PAIxSection& right);
          // G4int operator==(const G4PAIxSection& right)const;
          // G4int operator!=(const G4PAIxSection& right)const;
      
      // Methods
      
      // General control functions

  void     ComputeLowEnergyCof(const G4Material* material);
      void     ComputeLowEnergyCof();
          
      void InitPAI();

          void NormShift( G4double betaGammaSq );

          void SplainPAI( G4double betaGammaSq );
          
      // Physical methods
          

          G4double RutherfordIntegral( G4int intervalNumber,
                                   G4double limitLow,
                       G4double limitHigh     );

          G4double ImPartDielectricConst( G4int intervalNumber,
                                      G4double energy        );

          G4double GetPhotonRange( G4double energy );
          G4double GetElectronRange( G4double energy );

          G4double RePartDielectricConst(G4double energy);

          G4double DifPAIxSection( G4int intervalNumber,
                               G4double betaGammaSq    );

          G4double PAIdNdxCerenkov( G4int intervalNumber,
                               G4double betaGammaSq    );
          G4double PAIdNdxMM( G4int intervalNumber,
                               G4double betaGammaSq    );

          G4double PAIdNdxPlasmon( G4int intervalNumber,
                               G4double betaGammaSq    );

          G4double PAIdNdxResonance( G4int intervalNumber,
                               G4double betaGammaSq    );


      void     IntegralPAIxSection();
      void     IntegralCerenkov();
      void     IntegralMM();
      void     IntegralPlasmon();
      void     IntegralResonance();

          G4double SumOverInterval(G4int intervalNumber);
          G4double SumOverIntervaldEdx(G4int intervalNumber);
          G4double SumOverInterCerenkov(G4int intervalNumber);
          G4double SumOverInterMM(G4int intervalNumber);
          G4double SumOverInterPlasmon(G4int intervalNumber);
          G4double SumOverInterResonance(G4int intervalNumber);

          G4double SumOverBorder( G4int intervalNumber,
                              G4double energy          );
          G4double SumOverBorderdEdx( G4int intervalNumber,
                              G4double energy          );
          G4double SumOverBordCerenkov( G4int intervalNumber,
                                    G4double energy          );
          G4double SumOverBordMM( G4int intervalNumber,
                                    G4double energy          );
          G4double SumOverBordPlasmon( G4int intervalNumber,
                                   G4double energy          );
          G4double SumOverBordResonance( G4int intervalNumber,
                                   G4double energy          );

          G4double GetStepEnergyLoss( G4double step );
          G4double GetStepCerenkovLoss( G4double step );
          G4double GetStepMMLoss( G4double step );
          G4double GetStepPlasmonLoss( G4double step );
          G4double GetStepResonanceLoss( G4double step );
     
          G4double GetEnergyTransfer();
          G4double GetCerenkovEnergyTransfer();
          G4double GetMMEnergyTransfer();
          G4double GetPlasmonEnergyTransfer();
          G4double GetResonanceEnergyTransfer();
          G4double GetRutherfordEnergyTransfer();
     
      // Inline access functions

      G4int GetNumberOfGammas() const { return fNumberOfGammas; }
      
          G4int GetSplineSize() const { return fSplineNumber; }
      
          G4int GetIntervalNumber() const { return fIntervalNumber; }

          G4double GetEnergyInterval(G4int i){ return fEnergyInterval[i]; } 

          G4double GetDifPAIxSection(G4int i){ return fDifPAIxSection[i]; } 
          G4double GetPAIdNdxCerenkov(G4int i){ return fdNdxCerenkov[i]; } 
          G4double GetPAIdNdxMM(G4int i){ return fdNdxMM[i]; } 
          G4double GetPAIdNdxPlasmon(G4int i){ return fdNdxPlasmon[i]; } 
          G4double GetPAIdNdxResonance(G4int i){ return fdNdxResonance[i]; } 
      
      G4double GetMeanEnergyLoss() const {return fIntegralPAIxSection[0]; }
      G4double GetMeanCerenkovLoss() const {return fIntegralCerenkov[0]; }
      G4double GetMeanMMLoss() const {return fIntegralMM[0]; }
      G4double GetMeanPlasmonLoss() const {return fIntegralPlasmon[0]; }
      G4double GetMeanResonanceLoss() const {return fIntegralResonance[0]; }

      G4double GetNormalizationCof() const { return fNormalizationCof; }

      G4double GetLowEnergyCof() const { return fLowEnergyCof; }

  void SetVerbose(G4int v){fVerbose=v;};
          
      inline G4double GetPAItable(G4int i,G4int j) const;

          inline G4double GetLorentzFactor(G4int i) const;
          
      inline G4double GetSplineEnergy(G4int i) const;
      
      inline G4double GetIntegralPAIxSection(G4int i) const;
      inline G4double GetIntegralPAIdEdx(G4int i) const;
      inline G4double GetIntegralCerenkov(G4int i) const;
      inline G4double GetIntegralMM(G4int i) const;
      inline G4double GetIntegralPlasmon(G4int i) const;
      inline G4double GetIntegralResonance(G4int i) const;

private :

  void CallError(G4int i, const G4String& methodName) const;

  G4PAIxSection & operator=(const G4PAIxSection &right);
  G4PAIxSection(const G4PAIxSection&);

// Local class constants
 
static const G4double fDelta; // energy shift from interval border = 0.001
static const G4double fError; // error in lin-log approximation = 0.005

static G4int fNumberOfGammas;         // = 111;
static const G4double fLorentzFactor[112];  //  static gamma array

static 
const G4int fRefGammaNumber ; // The number of gamma for creation of spline (15)

G4int    fIntervalNumber ;    //  The number of energy intervals
G4double fNormalizationCof;   // Normalization cof for PhotoAbsorptionXsection

// G4double fBetaGammaSq;        // (beta*gamma)^2

  G4int fMaterialIndex;  // current material index
  G4double fDensity;            // Current density
  G4double fElectronDensity;    // Current electron (number) density
  G4double fLowEnergyCof;    // Correction cof for low energy region
  G4int    fSplineNumber;       // Current size of spline
  G4int    fVerbose;       // verbose flag

// Arrays of Sandia coefficients

  G4OrderedTable* fMatSandiaMatrix;

  G4SandiaTable*  fSandia;

  G4DataVector fEnergyInterval;
  G4DataVector fA1; 
  G4DataVector fA2;
  G4DataVector fA3; 
  G4DataVector fA4;

static
const G4int   fMaxSplineSize ;          // Max size of output splain arrays = 500


  G4DataVector          fSplineEnergy;   // energy points of splain
  G4DataVector   fRePartDielectricConst;   // Real part of dielectric const
  G4DataVector   fImPartDielectricConst;   // Imaginary part of dielectric const
  G4DataVector            fIntegralTerm;   // Integral term in PAI cross section
  G4DataVector          fDifPAIxSection;   // Differential PAI cross section
  G4DataVector            fdNdxCerenkov;   // dNdx of Cerenkov collisions
  G4DataVector            fdNdxPlasmon;    // dNdx of Plasmon collisions
  G4DataVector            fdNdxMM;    // dNdx of MM-Cerenkov collisions
  G4DataVector            fdNdxResonance;    // dNdx of Resonance collisions

  G4DataVector     fIntegralPAIxSection;   // Integral PAI cross section  ?
  G4DataVector     fIntegralPAIdEdx;       // Integral PAI dEdx  ?
  G4DataVector     fIntegralCerenkov;      // Integral Cerenkov N>omega  ?
  G4DataVector     fIntegralPlasmon;       // Integral Plasmon N>omega  ?
  G4DataVector     fIntegralMM;       // Integral MM N>omega  ?
  G4DataVector     fIntegralResonance;       // Integral resonance N>omega  ?



G4double fPAItable[500][112]; // Output array

};    

////////////////  Inline methods //////////////////////////////////
//

inline G4double G4PAIxSection::GetPAItable(G4int i, G4int j) const
{
   return fPAItable[i][j];
}

inline G4double G4PAIxSection::GetLorentzFactor(G4int j) const
{
   return fLorentzFactor[j];
}

inline G4double G4PAIxSection::GetSplineEnergy(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetSplineEnergy"); }
  return fSplineEnergy[i];
}
      
inline G4double G4PAIxSection::GetIntegralPAIxSection(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPAIxSection"); }
  return fIntegralPAIxSection[i];
}

inline G4double G4PAIxSection::GetIntegralPAIdEdx(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPAIdEdx"); }
  return fIntegralPAIdEdx[i];
}

inline G4double G4PAIxSection::GetIntegralCerenkov(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralCerenkov"); }
  return fIntegralCerenkov[i];
}

inline G4double G4PAIxSection::GetIntegralMM(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralMM"); }
  return fIntegralMM[i];
}

inline G4double G4PAIxSection::GetIntegralPlasmon(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPlasmon"); }
  return fIntegralPlasmon[i];
}

inline G4double G4PAIxSection::GetIntegralResonance(G4int i) const 
{
  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralResonance"); }
  return fIntegralResonance[i];
}

#endif   

// -----------------   end of G4PAIxSection header file    -------------------