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 }
  38 //_____________________________________________________________________________
  39 AliITSRecoParam::~AliITSRecoParam()
  40 {
  41   //
  42   // destructor
  43   //
  44 }
  45 //_____________________________________________________________________________
  46 AliITSRecoParam *AliITSRecoParam::GetHighFluxParam()
  47 {
  48   //
  49   // make default reconstruction  parameters for hig  flux env.
  50   //
  51   AliITSRecoParam *param = new AliITSRecoParam();
  52
  53   param->fMaxSnp = 0.95;
  54
  55   param->fNSigmaYLayerForRoadY = 4.;
  56   param->fNSigmaRoadY = 7.5;
  57   param->fNSigmaZLayerForRoadZ = 4.;
  58   param->fNSigmaRoadZ = 7.5;
  59
  60   param->fNSigma2RoadZC = 60.; //7.75^2
  61   param->fNSigma2RoadYC = 60.; //7.75^2
  62   param->fNSigma2RoadZNonC = 50.; //7.07^2
  63   param->fNSigma2RoadYNonC = 50.; //7.07^2
  64
  65   param->fMaxChi2PerCluster[0] = 11.; //7
  66   param->fMaxChi2PerCluster[1] = 12.; //5
  67   param->fMaxChi2PerCluster[2] = 12.; //8
  68   param->fMaxChi2PerCluster[3] = 5.;  //8
  69   param->fMaxChi2PerCluster[4] = 12.; //6.5
  70
  71   param->fMaxNormChi2NonC[0] = 7.;
  72   param->fMaxNormChi2NonC[1] = 8.;
  73   param->fMaxNormChi2NonC[2] = 8.;
  74   param->fMaxNormChi2NonC[3] = 11.;
  75   param->fMaxNormChi2NonC[4] = 14.;
  76   param->fMaxNormChi2NonC[5] = 25.;
  77
  78   param->fMaxNormChi2C[0] = 11.;
  79   param->fMaxNormChi2C[1] = 13.;
  80   param->fMaxNormChi2C[2] = 15.;
  81   param->fMaxNormChi2C[3] = 18.;
  82   param->fMaxNormChi2C[4] = 30.;
  83   param->fMaxNormChi2C[5] = 35.;
  84
  85   param->fMaxChi2 = 35.;
  86
  87   param->fMaxChi2s[0] = 25.; //40
  88   param->fMaxChi2s[1] = 25.; //40
  89   param->fMaxChi2s[2] = 25.; //40
  90   param->fMaxChi2s[3] = 25.; //40
  91   param->fMaxChi2s[4] = 40.; //40
  92   param->fMaxChi2s[5] = 50.; //40
  93
  94   param->fMaxRoad = 6.;
  95
  96   // not used
  97   param->fMaxChi2In = 16.;
  98
  99   param->fMaxChi2sR[0] = 10.;
 100   param->fMaxChi2sR[1] = 10.;
 101   param->fMaxChi2sR[2] = 10.;
 102   param->fMaxChi2sR[3] = 10.;
 103   param->fMaxChi2sR[4] = 30.;
 104   param->fMaxChi2sR[5] = 40.;
 105
 106   param->fChi2PerCluster = 9.;
 107   // not used
 108
 109   param->fXV = 0.;
 110   param->fYV = 0.;
 111   param->fZV = 0.;
 112   param->fSigmaXV = 0.0050;
 113   param->fSigmaYV = 0.0050;
 114   param->fSigmaZV = 0.0100;
 115
 116   param->fVertexCut = 25.;
 117
 118   return param;
 119 }
 120 //_____________________________________________________________________________
 121 AliITSRecoParam *AliITSRecoParam::GetLowFluxParam()
 122 {
 123   //
 124   // make default reconstruction  parameters for low  flux env.
 125   //
 126   return GetHighFluxParam();
 127 }
 128 //_____________________________________________________________________________
 129 AliITSRecoParam *AliITSRecoParam::GetCosmicTestParam()
 130 {
 131   //
 132   // make default reconstruction  parameters for cosmics
 133   //
 134   return GetHighFluxParam();
 135 }
 136 //_____________________________________________________________________________
 137 void AliITSRecoParam::SetLayersParameters()
 138 {
 139   //
 140   // number of layers and layers spatial resolutions
 141   //
 142
 143   // spatial resolutions of the detectors
 144   // y: 12 12 38 38 20 20 micron
 145   fSigmaY2[0]=1.44e-6;
 146   fSigmaY2[1]=1.44e-6;
 147   fSigmaY2[2]=1.444e-5;
 148   fSigmaY2[3]=1.444e-5;
 149   fSigmaY2[4]=4.0e-6;
 150   fSigmaY2[5]=4.0e-6;
 151   // z: 120 120 28 28 830 830 micron
 152   fSigmaZ2[0]=1.44e-4;
 153   fSigmaZ2[1]=1.44e-4;
 154   fSigmaZ2[2]=7.84e-6;
 155   fSigmaZ2[3]=7.84e-6;
 156   fSigmaZ2[4]=6.889e-3;
 157   fSigmaZ2[5]=6.889e-3;
 158
 159   return;
 160 }
 161