LArG4Barrel/src/CryostatCalibrationCalculator.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
// LArG4::BarrelCryostat::CalibrationCalculator
// Prepared 24-Feb-2004 Bill Seligman
 
// This class calculates the values needed for calibration hits in the
// simulation.
 
// A "calculator" is used in much the same way as a hand-held
// calculator might be.  The user supplies a value and hits 'Enter'
// (i.e., invokes the Process() method).  Then they read off whatever
// values are of interest.
 
// This particular class is meant to be a "generic" calculator for
// dead materials.  It's assumed that for most dead volumes, the
// detector_system/subdet/type/sampling/region of the identifier will
// remain constant (except that subdet will be +/- depending on z).
// The only portions that will change are the eta and phi identifiers.
 
#ifndef LArG4_BarrelCryostat_CalibrationCalculator_H
#define LArG4_BarrelCryostat_CalibrationCalculator_H
 
#include "LArG4Code/LArCalibCalculatorSvcImp.h"
#include "LArG4Code/LArG4Identifier.h"
 
#include "CaloG4Sim/SimulationEnergies.h"
 
#include "globals.hh"
 
#include <vector>
 
// Forward declaractions:
class G4Step;
 
// Note the use of nested namespaces (mainly to prevent long names
// like LArG4HECCalibrationCalculator).  This class is contained in
// the namespace LArG4::BarrelCryostat.
 
namespace LArG4 {
 
  namespace BarrelCryostat {
 
    class CalibrationCalculator : public LArCalibCalculatorSvcImp {
    public:
 
      CalibrationCalculator(const std::string& name, ISvcLocator *pSvcLocator);
      StatusCode initialize() override final;
      virtual ~CalibrationCalculator() = default;
 
      // The Process method returns a boolean value.  If it's true, the
      // hit can be used by Geant4; if it's false, there's something wrong
      // with the energy deposit and it should be ignored.
 
      // For calibration work, most of the time we want the calculator
      // to determine both the energy and the identifier.  However,
      // sometimes we want it calculate only the identifier (for
      // escaped energy), or only the energy (no known application
      // yet, but you can never tell).  Use the enum (defined in
      // VCalibrationCalculator.h) to control any special processing.
 
 
      virtual G4bool Process (const G4Step* step, LArG4Identifier & identifier,
                              std::vector<G4double> & energies,
                              const eCalculatorProcessing process = kEnergyAndID) const override final;
 
    private:
      // Energy calculator
      CaloG4::SimulationEnergies m_energyCalculator{};
 
      // If we can't find the volume in this calculator, try a
      // "backup" calculator.
      ServiceHandle<ILArCalibCalculatorSvc> m_backupCalculator{this, "BackupCalculator", "BarrelCryostatCalibrationLArCalculator"};
    };
 
  } // namespace BarrelCryostat
 
} // namespace LArG4
 
#endif // LArG4_BarrelCryostat_CalibrationCalculator_H