ITS/AliITSRecoParam.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16
  17 ///////////////////////////////////////////////////////////////////////////////
  18 //                                                                           //
  19 // Class with ITS reconstruction parameters                                  //
  20 // Origin: andrea.dainese@lnl.infn.it                                        //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include "AliITSRecoParam.h"
  26
  27 ClassImp(AliITSRecoParam)
  28
  29
  30 //_____________________________________________________________________________
  31 AliITSRecoParam::AliITSRecoParam()
  32 {
  33   //
  34   // constructor
  35   //
  36   SetLayersParameters();
  37   SetUseTGeoInTracker(kFALSE);
  38   SetAllowSharedClusters(kTRUE);
  39   SetFindV0s(kTRUE);
  40   SetAddVirtualClustersInDeadZone(kTRUE);
  41 }
  42 //_____________________________________________________________________________
  43 AliITSRecoParam::~AliITSRecoParam()
  44 {
  45   //
  46   // destructor
  47   //
  48 }
  49 //_____________________________________________________________________________
  50 AliITSRecoParam *AliITSRecoParam::GetHighFluxParam()
  51 {
  52   //
  53   // make default reconstruction  parameters for hig  flux env.
  54   //
  55   AliITSRecoParam *param = new AliITSRecoParam();
  56
  57   param->fMaxSnp = 0.95;
  58
  59   param->fNSigmaYLayerForRoadY = 4.;
  60   param->fNSigmaRoadY = 7.5;
  61   param->fNSigmaZLayerForRoadZ = 4.;
  62   param->fNSigmaRoadZ = 7.5;
  63
  64   param->fNSigma2RoadZC = 60.; //7.75^2
  65   param->fNSigma2RoadYC = 60.; //7.75^2
  66   param->fNSigma2RoadZNonC = 50.; //7.07^2
  67   param->fNSigma2RoadYNonC = 50.; //7.07^2
  68
  69   param->fMaxChi2PerCluster[0] = 11.; //7
  70   param->fMaxChi2PerCluster[1] = 12.; //5
  71   param->fMaxChi2PerCluster[2] = 12.; //8
  72   param->fMaxChi2PerCluster[3] = 5.;  //8
  73   param->fMaxChi2PerCluster[4] = 12.; //6.5
  74
  75   param->fMaxNormChi2NonC[0] = 7.;
  76   param->fMaxNormChi2NonC[1] = 8.;
  77   param->fMaxNormChi2NonC[2] = 8.;
  78   param->fMaxNormChi2NonC[3] = 11.;
  79   param->fMaxNormChi2NonC[4] = 14.;
  80   param->fMaxNormChi2NonC[5] = 25.;
  81
  82   param->fMaxNormChi2C[0] = 11.;
  83   param->fMaxNormChi2C[1] = 13.;
  84   param->fMaxNormChi2C[2] = 15.;
  85   param->fMaxNormChi2C[3] = 18.;
  86   param->fMaxNormChi2C[4] = 30.;
  87   param->fMaxNormChi2C[5] = 35.;
  88
  89   param->fMaxNormChi2NonCForHypothesis = 7.;
  90
  91   param->fMaxChi2 = 35.;
  92
  93   param->fMaxChi2s[0] = 25.; //40
  94   param->fMaxChi2s[1] = 25.; //40
  95   param->fMaxChi2s[2] = 25.; //40
  96   param->fMaxChi2s[3] = 25.; //40
  97   param->fMaxChi2s[4] = 40.; //40
  98   param->fMaxChi2s[5] = 50.; //40
  99
 100   param->fMaxRoad = 6.;
 101
 102   // not used
 103   param->fMaxChi2In = 16.;
 104
 105   param->fMaxChi2sR[0] = 10.;
 106   param->fMaxChi2sR[1] = 10.;
 107   param->fMaxChi2sR[2] = 10.;
 108   param->fMaxChi2sR[3] = 10.;
 109   param->fMaxChi2sR[4] = 30.;
 110   param->fMaxChi2sR[5] = 40.;
 111
 112   param->fChi2PerCluster = 9.;
 113   // not used
 114
 115   param->fXV = 0.;
 116   param->fYV = 0.;
 117   param->fZV = 0.;
 118   param->fSigmaXV = 0.0050;
 119   param->fSigmaYV = 0.0050;
 120   param->fSigmaZV = 0.0100;
 121
 122   param->fVertexCut = 25.;
 123
 124   param->fMaxDZforPrimTrk = 0.4;
 125   param->fMaxDZToUseConstraint = 3.;
 126
 127   param->fMaxDforV0dghtrForProlongation = 30.;
 128   param->fMaxDForProlongation = 10.;
 129   param->fMaxDZForProlongation = 20.;
 130   param->fMinPtForProlongation = 0.120;
 131
 132   param->fZWindowDeadZone = 2.0;
 133   param->fSigmaXDeadZoneHit2 = 0.004/12.;
 134   param->fSigmaZDeadZoneHit2 = 0.001/12.;
 135   param->fXPassDeadZoneHits = 0.018;
 136
 137
 138   return param;
 139 }
 140 //_____________________________________________________________________________
 141 AliITSRecoParam *AliITSRecoParam::GetLowFluxParam()
 142 {
 143   //
 144   // make default reconstruction  parameters for low  flux env.
 145   //
 146   return GetHighFluxParam();
 147 }
 148 //_____________________________________________________________________________
 149 AliITSRecoParam *AliITSRecoParam::GetCosmicTestParam()
 150 {
 151   //
 152   // make default reconstruction  parameters for cosmics
 153   //
 154   return GetHighFluxParam();
 155 }
 156 //_____________________________________________________________________________
 157 void AliITSRecoParam::SetLayersParameters()
 158 {
 159   //
 160   // number of layers and layers spatial resolutions
 161   //
 162
 163   // spatial resolutions of the detectors
 164   // y: 12 12 38 38 20 20 micron
 165   fSigmaY2[0]=1.44e-6;
 166   fSigmaY2[1]=1.44e-6;
 167   fSigmaY2[2]=1.444e-5;
 168   fSigmaY2[3]=1.444e-5;
 169   fSigmaY2[4]=4.0e-6;
 170   fSigmaY2[5]=4.0e-6;
 171   // z: 120 120 28 28 830 830 micron
 172   fSigmaZ2[0]=1.44e-4;
 173   fSigmaZ2[1]=1.44e-4;
 174   fSigmaZ2[2]=7.84e-6;
 175   fSigmaZ2[3]=7.84e-6;
 176   fSigmaZ2[4]=6.889e-3;
 177   fSigmaZ2[5]=6.889e-3;
 178
 179   return;
 180 }
 181