MatchTPCITSParams.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_MATCHITSTPC_PARAMS_H
#define ALICEO2_MATCHITSTPC_PARAMS_H
 
#include "CommonUtils/ConfigurableParam.h"
#include "CommonUtils/ConfigurableParamHelper.h"
#include "ReconstructionDataFormats/Track.h"
#include "DetectorsBase/Propagator.h"
 
namespace o2
{
namespace globaltracking
{
 
// There are configurable params for TPC-ITS matching
struct MatchTPCITSParams : public o2::conf::ConfigurableParamHelper<MatchTPCITSParams> {
  enum ValidateMatchByFIT { Disable,
                            Prefer,
                            Require }; // flags for usage of FT0 in match validation
  enum TimeOutliersPolicy {            // policy for matching timestamps outside of respective ITS ROF bracket
    Tolerate,                          // accept as is
    Adjust,                            // adjust to closest ITS bracket boundary
    Reject                             // reject match
  };
  bool runAfterBurner = true;                     
  ValidateMatchByFIT validateMatchByFIT = Prefer; 
  TimeOutliersPolicy ITSTimeOutliersPolicy = Adjust;
  float crudeAbsDiffCut[o2::track::kNParams] = {2.f, 2.f, 0.2f, 0.2f, 4.f};
  float crudeNSigma2Cut[o2::track::kNParams] = {49.f, 49.f, 49.f, 49.f, 49.f};
 
  float XMatchingRef = 70.f; 
  float ITSStepEffFraction = 0.5;     //< when correcting the ITS tracks for parameters difference between default PION and other PID hipothesis, use this fraction of propagated distance
  float minBetaGammaForPIDDiff = 1.2; // account for difference between ITS and TPC PIDs used in propagation if TPC beta*gamma is below this
 
  float minTPCTrackR = 50.; 
  float minITSTrackR = 50.; 
  int minTPCClusters = 25; 
  int askMinTPCRow[36] = { 
                          15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
                          15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15};
 
  float cutMatchingChi2 = 30.f; 
 
  int maxMatchCandidates = 5; 
 
  float safeMarginTimeCorrErr = 0; 
 
  float safeMarginTPCITSTimeBin = 1.f; 
 
  float safeMarginTPCTimeEdge = 20.f; 
 
  float tpcTimeICMatchingNSigma = 4.; 
 
  float tpcExtConstrainedNSigma = 4.; 
 
  float tfEdgeTimeToleranceMUS = 1.; 
 
  float maxVDriftUncertainty = 0.02; 
  float maxVDriftTrackQ2Pt = 1.0;    
  float maxVDritTimeOffset = 5.;     
 
  float globalTimeBiasMUS = 0.; 
  float globalTimeExtraErrorMUS = 0.; 
 
  //___________________ AfterBurner params
  int requireToReachLayerAB = 5;   
  int lowestLayerAB = 3;           
  int minContributingLayersAB = 2; 
  int maxABLinksOnLayer = 10;      
  int maxABFinalHyp = 20;          
  float cutABTrack2ClChi2 = 30.f;  
  float nABSigmaY = 4.;            
  float nABSigmaZ = 4.;            
  float err2ABExtraY = 0.1 * 0.1;  
  float err2ABExtraZ = 0.1 * 0.1;  
 
  int verbosity = 0; 
 
  o2::base::Propagator::MatCorrType matCorr = o2::base::Propagator::MatCorrType::USEMatCorrLUT; 
 
  O2ParamDef(MatchTPCITSParams, "tpcitsMatch");
};
 
} // namespace globaltracking
 
namespace framework
{
template <typename T>
struct is_messageable;
template <>
struct is_messageable<o2::globaltracking::MatchTPCITSParams> : std::true_type {
};
} // namespace framework
 
} // end namespace o2
 
#endif