d0/da7/SiG4UniversalFluctuation_8h_source.html

//

// GEANT4 Class header file

//

//

// File name:   SiG4UniversalFluctuation

//

// Author: Vladimir Ivanchenko make a class for Laszlo Urban model

//

// Modified for standalone use in CMSSW. Danek K. 02/2006

//

// Class Description:

//

// Implementation of energy loss fluctuations in Silicon


// -------------------------------------------------------------------

//


#ifndef SiG4UniversalFluctuation_h

#define SiG4UniversalFluctuation_h


namespace CLHEP {

  class HepRandomEngine;

}


class SiG4UniversalFluctuation {

public:

  explicit SiG4UniversalFluctuation();


  ~SiG4UniversalFluctuation();


  // 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,

                            CLHEP::HepRandomEngine *);


private:

  // hide assignment operator

  SiG4UniversalFluctuation &operator=(const SiG4UniversalFluctuation &right) = delete;

  SiG4UniversalFluctuation(const SiG4UniversalFluctuation &) = delete;


  double particleMass;

  double chargeSquare;


  // data members to speed up the fluctuation calculation

  double ipotFluct;

  double electronDensity;


  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;

  double nmaxCont1;

  double nmaxCont2;

};


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#endif