MyG4UniversalFluctuationForSi.h

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//
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4UniversalFluctuation
//
// Author:        Vladimir Ivanchenko
// 
// Creation date: 03.01.2002
//
// Modifications:
//
// 09-12-02 remove warnings (V.Ivanchenko)
// 28-12-02 add method Dispersion (V.Ivanchenko)
// 07-02-03 change signature (V.Ivanchenko)
// 13-02-03 Add name (V.Ivanchenko)
// Modified for standalone use in ORCA. d.k. 6/04
//
// Implementation of energy loss fluctuations
// -------------------------------------------------------------------
//

#ifndef MyG4UniversalFluctuationForSi_h
#define MyG4UniversalFluctuationForSi_h 

//#include "G4VEmFluctuationModel.hh"

/**
\addtogroup TrackDigi TrackDigi
@{
*/

class MyG4UniversalFluctuationForSi {
public:

  MyG4UniversalFluctuationForSi();

  ~MyG4UniversalFluctuationForSi();

  // momentum in MeV/c, mass in MeV, tmax (delta cut) in MeV, 
  // length in mm, meanLoss eloss in MeV.
  double SampleFluctuations(const double momentum,
                            const double mass,
                            double& tmax,
                            const double length,
                            const double meanLoss);
  
  //G4double Dispersion(    const G4Material*,
  //                        const G4DynamicParticle*,
  //                        G4double&,
  //                        G4double&);
  //void Initialise(const G4ParticleDefinition*);

protected:

private:

  // hide assignment operator
  //G4UniversalFluctuation & operator=(const  G4UniversalFluctuation &right);
  //G4UniversalFluctuation(const  G4UniversalFluctuation&);

  //const G4ParticleDefinition* particle;
  //const G4Material* lastMaterial;

  double particleMass{};
  double chargeSquare{};

  // data members to speed up the fluctuation calculation
  double ipotFluct{};
  double electronDensity{};
  //  G4double zeff;
  
  double f1Fluct{};
  double f2Fluct{};
  double e1Fluct{};
  double e2Fluct{};
  double rateFluct{};
  double e1LogFluct{};
  double e2LogFluct{};
  double ipotLogFluct{};
  double e0{};

  double minNumberInteractionsBohr{};
  double theBohrBeta2{};
  double minLoss{};
  double problim{};
  double sumalim{};
  double alim{};
  int    nmaxCont1{};
  int    nmaxCont2{};

};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
/** @} */
#endif