PndFsmRich.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: FsmRich.hh,v 1.1 2007/05/24 08:07:40 klausg Exp $
//
// Description:
//      Class FsmRich
//
//  Implementation of the far forward RICH for the Fast Sim Detectors
//
//  This software was developed for the PANDA collaboration.  If you
//  use all or part of it, please give an appropriate acknowledgement.
//
// Author List:
//      Klaus Goetzen                    Original Author
//
// Copyright Information:
//      Copyright (C) 2006              GSI
//
//------------------------------------------------------------------------

#ifndef PNDFSMRICH_H
#define PNDFSMRICH_H

//----------------------
// Base Class Headers --
//----------------------

//-------------------------------
// Collaborating class Headers --
//-------------------------------
#include <iosfwd>
#include "ArgList.h"
#include "PndFsmAbsDet.h"

//--------------------------------------------
// Collaborating class forward declarations --
// -------------------------------------------
class PndFsmTrack;
class PndFsmResponse;

class PndFsmRich : public PndFsmAbsDet {
 public:
  //--------------------
  // Public interface --
  //--------------------

  //
  // Constructors
  //

  PndFsmRich();
  PndFsmRich(ArgList &par);
  virtual ~PndFsmRich();

  virtual PndFsmResponse *respond(PndFsmTrack *t);

 private:
  bool detected(PndFsmTrack *t) const;
  double compThetaC(double p, double m);
  double gauss(double x, double x0, double s);

  void initParameters();
  void print(std::ostream &o);
  bool setParameter(std::string &name, double value);
  //
  //  Modifiers
  //

  double _angleXMax;
  double _angleYMax;
  double _radiationLength; // material budget
  double _pmin;            // minimum p_t to reach DIRC
  double _dthtc;           // resolution for tht_C for single photon (-> res=dthtc/sqrt(nPhot) )
  double _nPhotMin;        // minimum number of photons cutoff
  double _nRefrac;         // refraction index of radiator
  double _Bfield;          // B field strength [T]
  double _effNPhotons;     // overall efficiency for photon detection
  double _dRich;           // thickness of radiator
  double _dp;              // accuracy of momentum measurement
};

#endif