Geometry.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef ALICEO2_ZDC_GEOMETRY_H
#define ALICEO2_ZDC_GEOMETRY_H
 
#include <Rtypes.h>
#include "TMath.h"
#include <cmath>
 
namespace o2
{
namespace zdc
{
 
class Geometry
{
 public:
  static constexpr double ZNDIMENSION[3] = {3.52, 3.52, 50.};
  static constexpr double ZNFIBRE[3] = {0., 0.01825, 50.};
  static constexpr double ZNSECTORS[2] = {2, 2};
  static constexpr double ZNDIVISION[2] = {11, 11};
  static constexpr double ZNGROOVES[3] = {0.03, 0.03, 50.};
  static constexpr double ZNCPOSITION[3] = {0., 0., -11261.3};
  static constexpr double ZNAPOSITION[3] = {0., 0., 11259.8};
  static constexpr double ZNFIBREDIAMETER = 18;
  //
  static constexpr double ZPDIMENSION[3] = {11.2, 6., 75.};
  static constexpr double ZPFIBRE[3] = {0., 0.0275, 75.};
  static constexpr double ZPSECTORS[2] = {4, 1};
  static constexpr double ZPDIVISION[2] = {7, 15};
  static constexpr double ZPGROOVES[3] = {0.04, 0.04, 75.};
  static constexpr double ZPCPOSITION[3] = {24.35, 0., -11253.3};
  static constexpr double ZPAPOSITION[3] = {24.35, 0., 11251.8};
  static constexpr double ZPFIBREDIAMETER = 28;
 
  //
  static constexpr double ZEMDIMENSION[6] = {20.614 / 2., 3.5, 3.5, 45., 0., 0.};
  static constexpr double ZEMFIBRE[3] = {0., 0.0275, 4.92};
  static constexpr double ZEMDIVISION[3] = {92, 0, 20};
  //
  // using 1.4142135 instead of sqrt(2.): check!
  static constexpr double ZEMPOSITION[3] = {9.69, 0., 760.};
 
 private:
  static int32_t getDetector(const int32_t det);
  static int32_t getSector(const int32_t tow);
  static int32_t getVolumeId(const int32_t* vol);
 
  ClassDefNV(Geometry, 1);
};
} // namespace zdc
} // namespace o2
 
#endif