AliHLTTPCCAParameters.h

/**************************************************************************
 * This file is property of and copyright by the ALICE HLT Project        *
 * All rights reserved.                                                   *
 *                                                                        *
 * Primary Authors:                                                       *
 *     Copyright 2009       Matthias Kretz <kretz@kde.org>                *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

#ifndef ALIHLTTPCCAPARAMETERS_H
#define ALIHLTTPCCAPARAMETERS_H

#include "AliHLTTPCCADef.h"

namespace AliHLTTPCCAParameters
{                                       
  enum {
    MaximumExtrapolationRowGap = 5, // XXX 4 or even 3 seem to give better results

    MaximumRowGap = 4,

    MinimumHitsPerShared = 10,
    
    MinimumHitsForTracklet = 4,
    
    MinimumHitsForFragileTracklet  = 10,
    
    MinimumHitsForTrack = MinimumHitsForTracklet, // 10

    MinimumHitsForGBTrack = 10, // 30


      //    NumberOfInnerRows = 13-1, // delete iRow = 12
    
    MaxNumberOfRows8 = 112, // this should be divideable by sfloat_v::Size = 8, (16 for Xeon Phi)

    NumberOfSlices = 24, // TODO: !!! read from file

    RowStep = 1,

    GridCreationCoeff = 2    

  };

  static const float MinCellSize = 2.f;
  
  static const float HitPickUpFactor = 2.f;
  
  static const float NeighbourAreaSizeTgY[3] = {.6,  2., 2.}; // TODO choose appropriate and use > 1 iterations
  static const float NeighbourAreaSizeTgZ[3] = {2.,  2., 2.};

   // TODO describe
    // curv = 1/R = (1/pt[GeV] * Bz[kGauss] * c[=0.00028])  . 1GeV -> curv = 0.0014
    // errX ~= 0.12. dX ~= 2. curv+ = 0.06 - anyway additional error is significantly bigger
//#define USE_CURV_CUT  // TODO don't work, problem with error estimation
#ifdef USE_CURV_CUT
  static const float NeighbourCurvCut[3] = {0.03,  .1, 3.};//{0.03,  .1, 3.};
//  static const float NeighbourCurvCutY[3] = {0.03,  .1, 3.};//{0.03,  .1, 3.};
//  static const float NeighbourCurvCutZ[3] = {0.03,  .1, 3.};//{0.03,  .1, 3.};
#else
  static const float NeighbourChiCut[3] = {0.2,  3., 3.};//{0.2,  3., 3.};
#endif // 1

  static const int NeighboursChainMinLength[3] = {3,  3, 3};
  
  static const float MinHitsMergeDist = 2;
  
#ifndef __CINT__
  static const sfloat_v MinimumQPt = 1.e-8f;
#else
  static const float    MinimumQPt = 1.e-8f;
#endif

  static const float MinTrackPurity = .8;

  static const float ExtraThresholdL = 0.2;
  
  static const float ExtraThreshold = 0.05;
  
  static const float RefThreshold = 1.;

  static const float XMax = 200.f;//maximum X of TPC
  static const float XMin = 50.f;//maximum X of TPC

} // namespace AliHLTTPCCAParameters
//namespace Parameters{  using namespace AliHLTTPCCAParameters; }

namespace AliHLTTPCCAPParameters{ 

  enum{
    MinimumHitsForMCTrack = 10,
    
    MinimumMCPointsForMCTrack = 10,

    MinimumHitsForRecoTrack = 4
  }; // enum

  static const float MinTrackPurity = .9;
} //  namespace AliHLTTPCCAPParameters
namespace PParameters{  using namespace AliHLTTPCCAPParameters; }

namespace AliHLTTPCCASPParameters{ 
  enum{
    MinimumHitsForMCTrack = 5, // 30

    MinimumConsHitsForMCTrack = 5,

    MinimumHitsForRecoTrack = 4
    
  }; // enum

  static const float MinTrackPurity = PParameters::MinTrackPurity;
} //  namespace AliHLTTPCCASPParameters
namespace SPParameters{   using namespace AliHLTTPCCASPParameters; }

#endif // ALIHLTTPCCAPARAMETERS_H