ITS/AliITSRecoParam.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
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  11  * appear in the supporting documentation. The authors make no claims     *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 #include "AliITSRecoParam.h"
  17
  18 /* $Id$ */
  19
  20 ///////////////////////////////////////////////////////////////////////////////
  21 //                                                                           //
  22 // Class with ITS reconstruction parameters                                  //
  23 // Origin: andrea.dainese@lnl.infn.it                                        //
  24 //                                                                           //
  25 ///////////////////////////////////////////////////////////////////////////////
  26
  27
  28
  29 ClassImp(AliITSRecoParam)
  30
  31
  32 //_____________________________________________________________________________
  33 AliITSRecoParam::AliITSRecoParam() : TObject(),
  34 fNSigmaYLayerForRoadY(0),
  35 fNSigmaRoadY(0),
  36 fNSigmaZLayerForRoadZ(0),
  37 fNSigmaRoadZ(0),
  38 fNSigma2RoadZC(0),
  39 fNSigma2RoadYC(0),
  40 fNSigma2RoadZNonC(0),
  41 fNSigma2RoadYNonC(0),
  42 fMaxNormChi2NonCForHypothesis(0),
  43 fMaxChi2(0),
  44 fMaxRoad(0),
  45 fMaxChi2In(0),
  46 fChi2PerCluster(0),
  47 fXV(0),
  48 fYV(0),
  49 fZV(0),
  50 fSigmaXV(0),
  51 fSigmaYV(0),
  52 fSigmaZV(0),
  53 fVertexCut(0),
  54 fMaxDZforPrimTrk(0),
  55 fMaxDZToUseConstraint(0),
  56 fMaxDforV0dghtrForProlongation(0),
  57 fMaxDForProlongation(0),
  58 fMaxDZForProlongation(0),
  59 fMinPtForProlongation(0),
  60 fAddVirtualClustersInDeadZone(kTRUE),
  61 fZWindowDeadZone(0),
  62 fSigmaXDeadZoneHit2(0),
  63 fSigmaZDeadZoneHit2(0),
  64 fXPassDeadZoneHits(0),
  65 fUseTGeoInTracker(kFALSE),
  66 fAllowSharedClusters(kTRUE),
  67 fUseNominalClusterErrors(kFALSE),
  68 fFindV0s(kTRUE)
  69 {
  70   //
  71   // constructor
  72   //
  73   SetLayersParameters();
  74   SetUseTGeoInTracker(kFALSE);
  75   SetAllowSharedClusters(kTRUE);
  76   SetFindV0s(kTRUE);
  77   SetAddVirtualClustersInDeadZone(kTRUE);
  78   SetUseAmplitudeInfo(kTRUE);
  79 }
  80 //_____________________________________________________________________________
  81 AliITSRecoParam::~AliITSRecoParam()
  82 {
  83   //
  84   // destructor
  85   //
  86 }
  87 //_____________________________________________________________________________
  88 AliITSRecoParam *AliITSRecoParam::GetHighFluxParam()
  89 {
  90   //
  91   // make default reconstruction  parameters for hig  flux env.
  92   //
  93   AliITSRecoParam *param = new AliITSRecoParam();
  94
  95   param->fMaxSnp = 0.95;
  96
  97   param->fNSigmaYLayerForRoadY = 4.;
  98   param->fNSigmaRoadY = 7.5;
  99   param->fNSigmaZLayerForRoadZ = 4.;
 100   param->fNSigmaRoadZ = 7.5;
 101
 102   param->fNSigma2RoadZC = 60.; //7.75^2
 103   param->fNSigma2RoadYC = 60.; //7.75^2
 104   param->fNSigma2RoadZNonC = 50.; //7.07^2
 105   param->fNSigma2RoadYNonC = 50.; //7.07^2
 106
 107   param->fMaxChi2PerCluster[0] = 11.; //7
 108   param->fMaxChi2PerCluster[1] = 12.; //5
 109   param->fMaxChi2PerCluster[2] = 12.; //8
 110   param->fMaxChi2PerCluster[3] = 5.;  //8
 111   param->fMaxChi2PerCluster[4] = 12.; //6.5
 112
 113   param->fMaxNormChi2NonC[0] = 7.;
 114   param->fMaxNormChi2NonC[1] = 8.;
 115   param->fMaxNormChi2NonC[2] = 8.;
 116   param->fMaxNormChi2NonC[3] = 11.;
 117   param->fMaxNormChi2NonC[4] = 14.;
 118   param->fMaxNormChi2NonC[5] = 25.;
 119
 120   param->fMaxNormChi2C[0] = 11.;
 121   param->fMaxNormChi2C[1] = 13.;
 122   param->fMaxNormChi2C[2] = 15.;
 123   param->fMaxNormChi2C[3] = 18.;
 124   param->fMaxNormChi2C[4] = 30.;
 125   param->fMaxNormChi2C[5] = 35.;
 126
 127   param->fMaxNormChi2NonCForHypothesis = 7.;
 128
 129   param->fMaxChi2 = 35.;
 130
 131   param->fMaxChi2s[0] = 25.; //40
 132   param->fMaxChi2s[1] = 25.; //40
 133   param->fMaxChi2s[2] = 25.; //40
 134   param->fMaxChi2s[3] = 25.; //40
 135   param->fMaxChi2s[4] = 40.; //40
 136   param->fMaxChi2s[5] = 50.; //40
 137
 138   param->fMaxRoad = 6.;
 139
 140   // not used
 141   param->fMaxChi2In = 16.;
 142
 143   param->fMaxChi2sR[0] = 10.;
 144   param->fMaxChi2sR[1] = 10.;
 145   param->fMaxChi2sR[2] = 10.;
 146   param->fMaxChi2sR[3] = 10.;
 147   param->fMaxChi2sR[4] = 30.;
 148   param->fMaxChi2sR[5] = 40.;
 149
 150   param->fChi2PerCluster = 9.;
 151   // not used
 152
 153   param->fXV = 0.;
 154   param->fYV = 0.;
 155   param->fZV = 0.;
 156   param->fSigmaXV = 0.0050;
 157   param->fSigmaYV = 0.0050;
 158   param->fSigmaZV = 0.0100;
 159
 160   param->fVertexCut = 25.;
 161
 162   param->fMaxDZforPrimTrk = 0.4;
 163   param->fMaxDZToUseConstraint = 3.;
 164
 165   param->fMaxDforV0dghtrForProlongation = 30.;
 166   param->fMaxDForProlongation = 10.;
 167   param->fMaxDZForProlongation = 20.;
 168   param->fMinPtForProlongation = 0.120;
 169
 170   param->fZWindowDeadZone = 2.0;
 171   param->fSigmaXDeadZoneHit2 = 0.004/12.;
 172   param->fSigmaZDeadZoneHit2 = 0.001/12.;
 173   param->fXPassDeadZoneHits = 0.018;
 174
 175
 176   return param;
 177 }
 178 //_____________________________________________________________________________
 179 AliITSRecoParam *AliITSRecoParam::GetLowFluxParam()
 180 {
 181   //
 182   // make default reconstruction  parameters for low  flux env.
 183   //
 184   return GetHighFluxParam();
 185 }
 186 //_____________________________________________________________________________
 187 AliITSRecoParam *AliITSRecoParam::GetCosmicTestParam()
 188 {
 189   //
 190   // make default reconstruction  parameters for cosmics
 191   //
 192   return GetHighFluxParam();
 193 }
 194 //_____________________________________________________________________________
 195 void AliITSRecoParam::SetLayersParameters()
 196 {
 197   //
 198   // number of layers and layers spatial resolutions
 199   //
 200
 201   // spatial resolutions of the detectors
 202   // y: 12 12 38 38 20 20 micron
 203   fSigmaY2[0]=1.44e-6;
 204   fSigmaY2[1]=1.44e-6;
 205   fSigmaY2[2]=1.444e-5;
 206   fSigmaY2[3]=1.444e-5;
 207   fSigmaY2[4]=4.0e-6;
 208   fSigmaY2[5]=4.0e-6;
 209   // z: 120 120 28 28 830 830 micron
 210   fSigmaZ2[0]=1.44e-4;
 211   fSigmaZ2[1]=1.44e-4;
 212   fSigmaZ2[2]=7.84e-6;
 213   fSigmaZ2[3]=7.84e-6;
 214   fSigmaZ2[4]=6.889e-3;
 215   fSigmaZ2[5]=6.889e-3;
 216
 217   return;
 218 }
 219