IonizationAndScintillation.h

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#ifndef LARG4_IONIZATIONANDSCINTILLATION_H
#define LARG4_IONIZATIONANDSCINTILLATION_H

#include <cstring>

#include "larsim/LArG4/ISCalculation.h"

#include "Geant4/G4Step.hh"

#include "TH1.h"
#include "TH2.h"

namespace CLHEP { class HepRandomEngine; }

namespace larg4 {

  // The Ionization and Scintillation singleton
  class IonizationAndScintillation
  {
  public:

    static IonizationAndScintillation* CreateInstance(CLHEP::HepRandomEngine& engine);
    static IonizationAndScintillation* Instance();

    // Method to reset the internal variables held in the ISCalculation
    // This method should be called at the start of any G4Step
    void Reset(const G4Step* step);

    double EnergyDeposit()              const { return fISCalc->EnergyDeposit();              }
    double VisibleEnergyDeposit()       const { return fISCalc->VisibleEnergyDeposit();       }
    double NumberIonizationElectrons()  const { return fISCalc->NumberIonizationElectrons();  }
    double NumberScintillationPhotons() const { return fISCalc->NumberScintillationPhotons(); }
    double StepSizeLimit()              const { return fISCalc->StepSizeLimit();              }

  private:

    IonizationAndScintillation(CLHEP::HepRandomEngine& engine);
    ~IonizationAndScintillation();

    larg4::ISCalculation* fISCalc;             
    std::string           fISCalculator;       
    G4Step const*         fStep;               
    int                   fStepNumber;         
    int                   fTrkID;              

    TH1F*                 fElectronsPerStep;   
    TH1F*                 fStepSize;           
    TH1F*                 fPhotonsPerStep;     
    TH1F*                 fEnergyPerStep;      
    TH1F*                 fElectronsPerLength; 
    TH1F*                 fPhotonsPerLength;   
    TH1F*                 fElectronsPerEDep;   
    TH1F*                 fPhotonsPerEDep;     
    TH2F*                 fElectronsVsPhotons; 
    CLHEP::HepRandomEngine& fEngine;           
  };

} // namespace larg4


#endif // LARG4_IONIZATIONANDSCINTILLATION