G4UniversalFluctuation.hh

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// $Id$
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4UniversalFluctuation
//
// Author:        V.Ivanchenko make a class with the Laszlo Urban model
//
// 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)
// 16-10-03 Changed interface to Initialisation (V.Ivanchenko)
// 07-02-05 define problim = 5.e-3 (mma)
//
// Class Description:
//
// Implementation of energy loss fluctuations
 
// -------------------------------------------------------------------
//
 
#ifndef G4UniversalFluctuation_h
#define G4UniversalFluctuation_h 1
 
 
#include "G4VEmFluctuationModel.hh"
#include "G4ParticleDefinition.hh"
 
class G4UniversalFluctuation : public G4VEmFluctuationModel
{
 
public:
 
  G4UniversalFluctuation(const G4String& nam = "UniFluc");
 
  virtual ~G4UniversalFluctuation();
 
  virtual G4double SampleFluctuations(const G4Material*,
                      const G4DynamicParticle*,
                      G4double&,
                      G4double&,
                      G4double&);
 
  virtual G4double Dispersion(    const G4Material*,
                  const G4DynamicParticle*,
                  G4double&,
                  G4double&);
 
  virtual void InitialiseMe(const G4ParticleDefinition*);
 
  // Initialisation prestep
  virtual void SetParticleAndCharge(const G4ParticleDefinition*, G4double q2);
 
private:
 
  // hide assignment operator
  G4UniversalFluctuation & operator=(const  G4UniversalFluctuation &right);
  G4UniversalFluctuation(const  G4UniversalFluctuation&);
 
  const G4ParticleDefinition* particle;
  const G4Material* lastMaterial;
 
  G4double particleMass;
  G4double chargeSquare;
 
  // data members to speed up the fluctuation calculation
  G4double ipotFluct;
  G4double electronDensity;
  
  G4double f1Fluct;
  G4double f2Fluct;
  G4double e1Fluct;
  G4double e2Fluct;
  G4double e1LogFluct;
  G4double e2LogFluct;
  G4double ipotLogFluct;
  G4double e0;
  G4double esmall;
 
  G4double e1,e2;
 
  G4double minNumberInteractionsBohr;
  G4double theBohrBeta2;
  G4double minLoss;
  G4double nmaxCont;
  G4double rate,fw;
 
 
};
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
#endif