Constants.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_MFT_CONSTANTS_H_
#define ALICEO2_MFT_CONSTANTS_H_
 
#include <Rtypes.h>
 
namespace o2
{
namespace mft
{
namespace constants
{
constexpr Int_t DisksNumber{5};
constexpr Int_t LayersNumber{2 * DisksNumber};
constexpr Int_t HalvesNumber{2};
 
constexpr Double_t LayerZPosition[] = {-45.3, -46.7, -48.6, -50.0, -52.4, -53.8, -67.7, -69.1, -76.1, -77.5};
 
constexpr Double_t DiskThicknessInX0[DisksNumber] = {0.008, 0.008, 0.008, 0.008, 0.008};
 
inline const Double_t diskThicknessInX0(Int_t id) { return (id >= 0 && id < DisksNumber) ? DiskThicknessInX0[id] : 0.; }
inline const Double_t layerZPosition(Int_t id)
{
  return (id >= 0 && id < LayersNumber) ? LayerZPosition[id] + (-(id % 2) * 2 - 1) * 0.0025 : 0.;
}
} // namespace constants
} // namespace mft
} // namespace o2
 
#endif