McEnergyLossUpdator.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ISF_Fatras_McEnergyLossUpdator_H
#define ISF_Fatras_McEnergyLossUpdator_H
 
// GaudiKernel & Athena
#include "AthenaBaseComps/AthAlgTool.h"
#include "GaudiKernel/ServiceHandle.h"
#include "GaudiKernel/ToolHandle.h"
#include "AthenaKernel/IAtRndmGenSvc.h"
#include "CxxUtils/checker_macros.h"
 
// Trk
#include "TrkExInterfaces/IEnergyLossUpdator.h"
#include "TrkEventPrimitives/PropDirection.h"
 
namespace Trk{
  class MaterialProperties;
  class EnergyLoss;
}
 
namespace iFatras{
 

 
  class ATLAS_NOT_THREAD_SAFE McEnergyLossUpdator : public extends<AthAlgTool, Trk::IEnergyLossUpdator> {
 
  public:

    McEnergyLossUpdator( const std::string&, const std::string&, const IInterface* );

    virtual ~McEnergyLossUpdator() = default;

    virtual StatusCode initialize() override;

    virtual
      double dEdX( const Trk::MaterialProperties& materialProperties,
                   double momentum,
                   Trk::ParticleHypothesis particleHypothesis = Trk::pion ) const override;

    virtual
      Trk::EnergyLoss energyLoss( const Trk::MaterialProperties& materialProperties,
                                  double momentum,
                                  double pathCorrection,
                                  Trk::PropDirection direction = Trk::alongMomentum,
                                  Trk::ParticleHypothesis particleHypothesis = Trk::pion,
                                  bool usePDGformula = false) const override;

    virtual
      Trk::EnergyLoss updateEnergyLoss( Trk::EnergyLoss&, double, double, double, double, int&) const override { return {}; }

    virtual
      void getX0ElossScales(int, double, double, double&, double& ) const override {}
 
  private:
 
    PublicToolHandle<IEnergyLossUpdator> m_energyLossUpdator{this, "EnergyLossUpdator", "Trk::EnergyLossUpdator/AtlasEnergyLossUpdator"};            
    IntegerProperty m_energyLossDistribution{this, "EnergyLossDistribution", 3};       

    ServiceHandle<IAtRndmGenSvc> m_rndGenSvc{this, "RandomNumberService", "AtDSFMTGenSvc"};
    CLHEP::HepRandomEngine *m_randomEngine{};
    StringProperty m_randomEngineName{this, "RandomStreamName", "FatrasRnd"};         
    BooleanProperty m_usePDGformula{this, "UsePDG_EnergyLossFormula", false};
 
 
 
  };
 
} // end iFatras namespace
 
#endif