PMD/AliPMDEmpDiscriminator.cxx

   1 /***************************************************************************
   2  * Copyright(c) 1998-1999, 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 //           Date   : August 05 2003                   //
  19 //  This does photon hadron discrimination on the      //
  20 //  of matching a PMD cluster with a CPV cluster       //
  21 //                                                     //
  22 //-----------------------------------------------------//
  23
  24 #include <Riostream.h>
  25 #include <TMath.h>
  26 #include <TTree.h>
  27 #include <TObjArray.h>
  28 #include <TClonesArray.h>
  29 #include <TFile.h>
  30 #include <TNtuple.h>
  31 #include <TParticle.h>
  32
  33 #include "AliLog.h"
  34 #include "AliPMDrecdata.h"
  35 #include "AliPMDclupid.h"
  36 #include "AliPMDDiscriminator.h"
  37 #include "AliPMDEmpDiscriminator.h"
  38
  39 ClassImp(AliPMDEmpDiscriminator)
  40
  41 AliPMDEmpDiscriminator::AliPMDEmpDiscriminator()
  42 {
  43 //
  44 // Default Constructor
  45 //
  46 }
  47 // -----------------------------------------------------------------------
  48 AliPMDEmpDiscriminator::~AliPMDEmpDiscriminator()
  49 {
  50   // Destructor
  51 }
  52
  53 // -----------------------------------------------------------------------
  54
  55 void AliPMDEmpDiscriminator::Discrimination(TObjArray *pmdcontin, TObjArray *pmdcontout)
  56 {
  57   // Does Photon/Hadron discrimination
  58   // matching the clusters of CPV and PREshower plane
  59   //
  60
  61   Int_t   det,smn, trno, trpid, mstatus;
  62   Float_t clusdata[7];
  63
  64   AliPMDrecdata  *pmdcl    = 0;
  65   AliPMDclupid   *pmdclout = 0;
  66
  67   Int_t nentries1 = pmdcontin->GetEntries();
  68
  69   AliDebug(1,Form("Number of total clusters from CPV PRE = %d",nentries1));
  70
  71
  72   for (Int_t ient1 = 0; ient1 < nentries1; ient1++)
  73     {
  74       pmdcl = (AliPMDrecdata*)pmdcontin->UncheckedAt(ient1);
  75
  76       det         = pmdcl->GetDetector();
  77       smn         = pmdcl->GetSMNumber();
  78       trno        = pmdcl->GetClusTrackNo();
  79       trpid       = pmdcl->GetClusTrackPid();
  80       clusdata[0] = pmdcl->GetClusX();
  81       clusdata[1] = pmdcl->GetClusY();
  82       clusdata[2] = pmdcl->GetClusADC();
  83       clusdata[3] = pmdcl->GetClusCells();
  84       clusdata[4] = pmdcl->GetClusSigmaX();
  85       clusdata[5] = pmdcl->GetClusSigmaY();
  86
  87       if (det == 0 && clusdata[2] > 300.)
  88         {
  89           clusdata[6] = 1;     // photon
  90         }
  91       else
  92         {
  93           clusdata[6] = 8;     // hadron
  94         }
  95
  96       mstatus = 0;             // at this moment matching is not done
  97
  98       pmdclout = new AliPMDclupid(det,smn,trno,trpid,mstatus,clusdata);
  99       pmdcontout->Add(pmdclout);
 100
 101     } // Entries of TObjArray loop
 102
 103 }
 104 // -----------------------------------------------------------------------