HLT/exa/runtracker.C

   1 // $Id$
   2
   3 /**
   4    Run this macro for cluster finder and track follower (see steering class
   5    AliLevel3.
   6 */
   7
   8 void runtracker(int minslice,int maxslice,char* path=0,char *rootfile=0,int nevent=1)
   9 {
  10   AliL3Logger l;
  11   l.Set(AliL3Logger::kAll);
  12   l.UseStdout();
  13   //l.UseStream();
  14
  15   char path_to_use[1024];
  16   if(!path)
  17     //strcpy(path_to_use,"/usr/local/anders/data/hg_42105_s1-3/");
  18     strcpy(path_to_use,"/tmp/data/new/hijing/bfact1/1000/rawdata/");
  19   else strcpy(path_to_use,path);
  20
  21   AliL3Transform::Init(path_to_use);
  22
  23   Int_t phi_segments,eta_segments,trackletlength,tracklength;
  24   Int_t rowscopetracklet,rowscopetrack;
  25   Double_t min_pt_fit,maxangle,goodDist,hitChi2Cut;
  26   Double_t goodHitChi2,trackChi2Cut,maxphi,maxeta;
  27
  28   for(Int_t ev=0; ev<nevent; ev++)
  29     {
  30       if(!rootfile)
  31         a = new AliLevel3();
  32       else
  33         a = new AliLevel3(rootfile);
  34
  35       a->Init(path_to_use);
  36
  37       phi_segments = 50;   //devide the space into phi_segments and eta_segments
  38       eta_segments = 100;  //to access the search of points to that area!
  39       trackletlength = 3;  //number of hits a tracklet has to have
  40       tracklength = 5;     //number of hits a track has to have
  41       rowscopetracklet = 2;//search range of rows for a tracklet
  42       rowscopetrack = 2;   //search range of rows for a track
  43       min_pt_fit = 0;
  44       maxangle = 1.31;     //maximum angle for the three point look ahead
  45       goodDist = 5;        //threshold distance between two hits when building tracklets
  46       maxphi=100;          //maximum phi difference for neighboring hits
  47       maxeta=100;          //maximum eta difference for neighboring hits
  48       hitChi2Cut = 100;    //maximum chi2 of added hit to track
  49       goodHitChi2 = 20;    //stop looking for next hit to add if chi2 is less than goodHitChi2
  50       trackChi2Cut = 50;   //maximum chi2 for track after final fit
  51
  52       //main vertex tracking parameters:
  53       a->SetTrackerParam(phi_segments,eta_segments,trackletlength,tracklength,
  54                          rowscopetracklet,rowscopetrack,
  55                          min_pt_fit,maxangle,goodDist,hitChi2Cut,
  56                          goodHitChi2,trackChi2Cut,50,maxphi,maxeta,kTRUE);
  57
  58       //a->DoRoi();    /*do region of interest*/
  59       //a->DoMc();     /*do monte carlo identification*/
  60       a->WriteFiles(); /*enable output*/
  61
  62       a->ProcessEvent(minslice,maxslice);
  63       //a->DoBench("benchmark_0");
  64
  65       delete a;
  66     }
  67 }
  68
  69