FastSimulation/CalorimeterProperties/interface/HCALProperties.h - master - githubmirror/cmssw

FastSimulation/CalorimeterProperties/interface/HCALProperties.h
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16 май 2019, 15:48
16 май 2019, 15:4812a0cf0
#ifndef HCALProperties_H
#define HCALProperties_H

#include "FastSimulation/CalorimeterProperties/interface/CalorimeterProperties.h"
#include <vector>

/** 
 * Functions to return atomic properties of the material
 * A_eff and Z_eff are computed as the A-weighted sums 
 * of the A's and the Z's of Cu and Zn (brass) - For now
 * assume it is all Copper, and it'll be good enough.
 *
 * \author Patrick Janot
 * \date: 25-Jan-2004
 */

namespace edm {
  class ParameterSet;
}

class HCALProperties : public CalorimeterProperties {
public:
  HCALProperties(const edm::ParameterSet& fastDet);

  ~HCALProperties() override {}

  /// Effective A
  inline double theAeff() const override { return HCALAeff_; }

  /// Effective Z
  inline double theZeff() const override { return HCALZeff_; }

  /// Density in g/cm3
  inline double rho() const override { return HCALrho_; }

  /// Radiation length in cm
  inline double radLenIncm() const override { return radiationLengthIncm(); }

  /// Radiation length in cm but static
  // This is needed in Calorimetry/CrystalSegment.
  // Patrick, if you don't like it, give me another solution
  // to access the ECALProperties efficiently.
  inline double radiationLengthIncm() const { return HCALradiationLengthIncm_; }

  /// Radiation length in g/cm^2
  inline double radLenIngcm2() const override { return HCALradLenIngcm2_; }

  /// Moliere Radius in cm (=7 A/Z in g/cm^2)
  inline double moliereRadius() const override { return HCALmoliereRadius_; }
  //inline double moliereRadius()  const { return 2.4; }

  /// Critical energy in GeV (2.66E-3*(x0*Z/A)^1.1)
  inline double criticalEnergy() const override { return HCALcriticalEnergy_; }

  ///Interaction length in cm
  inline double interactionLength() const override { return HCALinteractionLength_; }

  ///h/pi Warning ! This is a ad-hoc parameter. It has been tuned to get a good agreement on 1TeV electrons
  ///It might have nothing to do with reality
  inline double hOverPi() const { return hOPi; }

  /// Spot fraction wrt ECAL
  inline double spotFraction() const { return spotFrac; }

  double getHcalDepth(double) const;

  int eta2ieta(double eta) const;

private:
  double hOPi;
  double spotFrac;

protected:
  double HCALAeff_;
  double HCALZeff_;
  double HCALrho_;
  double HCALradiationLengthIncm_;
  double HCALradLenIngcm2_;
  double HCALmoliereRadius_;
  double HCALcriticalEnergy_;
  double HCALinteractionLength_;
  std::vector<double> etatow_;        // HCAL towers eta edges
  std::vector<double> hcalDepthLam_;  // HCAL depth for each tower ieta
};

#endif