PWG1/TRD/AliTRDmultiplicity.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
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  15
  16
  17 ////////////////////////////////////////////////////////////////////////////
  18 //                                                                        //
  19 //  TRD multiplicity                                                      //
  20 //                                                                        //
  21 // Task to select true single tracks
  22 //
  23 // Program flow:
  24 // Part A - task AliTRDmultiplicity (within the framework qaRec):
  25 //   For TRD standalone or TRD&TOF tracks I make a FitRiemanTilt
  26 //   The resulting parameterization is dumped into a DebugStreamer written to a file
  27 //
  28 // Part B – $ALICE_ROOT/TRD/qaRec/macros/TrackletsinTRD.C[h] (analysis macro):
  29 //   The clusters are read in
  30 //   The above produced file is read in
  31 //   I make a fit through the parameterization of the  FitRiemanTilt -> in order to get a straight line (representing the track)
  32 //   the distance of each cluster with respect to the straight line is calculated
  33 //   If there is no cluster at a distance of 0.6  to 2 with respect to the track, the track is defined as a good track, i.e. clean single track
  34 //                                                                        //
  35 //  Authors: Yvonne C. Pachmayer <pachmay@physi.uni-heidelberg.de>        //
  36 //                                                                        //
  37 ////////////////////////////////////////////////////////////////////////////
  38
  39 #include <TObjArray.h>
  40 #include <TH1F.h>
  41 #include <TTreeStream.h>
  42
  43 #include "AliESDtrack.h"
  44 #include "AliExternalTrackParam.h"
  45 #include "AliTRDseedV1.h"
  46 #include "AliTRDtrackV1.h"
  47 #include "AliTRDtrackerV1.h"
  48 #include "AliTrackPointArray.h"
  49
  50 #include "AliTRDmultiplicity.h"
  51 #include "AliTRDgeometry.h"
  52 #include "info/AliTRDtrackInfo.h"
  53
  54 ClassImp(AliTRDmultiplicity)
  55
  56 //____________________________________________________________________
  57 AliTRDmultiplicity::AliTRDmultiplicity()
  58     :AliTRDrecoTask()
  59   ,fEventCounter(0)
  60 {
  61   //
  62   // Default constructor
  63     //
  64 }
  65
  66 AliTRDmultiplicity::AliTRDmultiplicity(char* name)
  67     :AliTRDrecoTask(name, "Barrel Tracking Multiplicity")
  68   ,fEventCounter(0)
  69 {
  70   //
  71   // Default constructor
  72     //
  73 }
  74
  75 //____________________________________________________________________
  76 AliTRDmultiplicity::~AliTRDmultiplicity()
  77 {
  78 }
  79
  80 //____________________________________________________________________
  81 void  AliTRDmultiplicity::UserCreateOutputObjects()
  82 {
  83   //
  84   // Create output objects
  85   //
  86
  87   TH1 *h = 0x0;
  88   fContainer = new TObjArray();
  89   for(Int_t is=0; is<AliTRDgeometry::kNsector; is++){
  90   fContainer->Add(h = new TH1F(Form("h_sector_%i", is), " ", 100,-10,10));
  91   }
  92 }
  93
  94 //____________________________________________________________________
  95 void AliTRDmultiplicity::UserExec(Option_t *)
  96 {
  97   //
  98   // Do it
  99   //
 100
 101
 102
 103   ULong_t status;
 104   AliTRDtrackInfo     *track = 0x0;
 105   AliExternalTrackParam *esd = 0x0;
 106   AliTRDtrackV1 *trackTRD = 0x0;
 107   Double_t x_anode[AliTRDgeometry::kNlayer] = {300.2, 312.8, 325.4, 338.0, 350.6, 363.2}; // Take the default X0
 108   Int_t standAlone=1;
 109   fEventCounter++;
 110
 111
 112   for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){
 113     track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk);
 114     if(!track->HasESDtrack()) continue;
 115     status = track->GetStatus();
 116
 117     AliTrackPoint points[6];
 118     Float_t xyz[3];
 119     memset(xyz, 0, sizeof(Float_t) * 3);
 120     Float_t trackletX[6];
 121     Float_t trackletY[6];
 122     Float_t trackletZ[6];
 123     for(Int_t a=0;a<6;a++)
 124     {
 125         xyz[0] = x_anode[a];
 126         points[a].SetXYZ(xyz);
 127         trackletX[a]=-1000;
 128         trackletY[a]=-1000;
 129         trackletZ[a]=-1000;
 130     }
 131     Int_t detTracklet=600;
 132
 133
 134
 135     // TRD standalone
 136     if(((status&AliESDtrack::kTRDout)>0) && !((status&AliESDtrack::kTRDin)>0))
 137     {
 138         trackTRD = track->GetTrack();
 139
 140         if(trackTRD)
 141         {
 142             AliTRDseedV1 *tracklet = 0x0;
 143             Int_t counterTracklet=0;
 144             for(Int_t itl = 0; itl < AliTRDgeometry::kNlayer; itl++)
 145             {
 146                 tracklet = trackTRD->GetTracklet(itl);
 147                 if(tracklet)
 148                 {
 149                     if(tracklet->IsOK())
 150                     {
 151                         counterTracklet++;
 152                         detTracklet=tracklet->GetDetector();
 153                         //printf("%i %f %f \n",itl,tracklet->GetYfit(0),tracklet->GetZfit(0));
 154                         trackletX[itl]=tracklet->GetX0();
 155                         trackletY[itl]=tracklet->GetYfit(0);
 156                         trackletZ[itl]=tracklet->GetZfit(0);
 157                     }
 158                 }
 159             }
 160             // this cut is needed otherwise the order of tracklets in the fit function is not correct
 161             if(counterTracklet==AliTRDgeometry::kNlayer) AliTRDtrackerV1::FitRiemanTilt(const_cast<AliTRDtrackV1 *>(trackTRD), 0x0, kTRUE, counterTracklet, points);
 162             else continue;
 163
 164             if(DebugLevel()>=1){
 165               for(Int_t il = 0; il < AliTRDgeometry::kNlayer; il++){
 166                 //printf("---------------------------------------- %i %i %f %f %f \n",counterTracklet,il,points[il].GetX(),points[il].GetY(),points[il].GetZ());
 167                 Double_t pointX=points[il].GetX();
 168                 Double_t pointY=points[il].GetY();
 169                 Double_t pointZ=points[il].GetZ();
 170
 171
 172                 (*DebugStream())   << "TrackletsinTRD"
 173                     << "standalone=" << standAlone
 174                     << "eventcounter=" << fEventCounter
 175                     << "layer="     << il
 176                     << "dettracklet=" << detTracklet
 177                     << "xtracklet=" << trackletX[il]
 178                     << "xtrack="    << pointX
 179                     << "ytracklet=" << trackletY[il]
 180                     << "ytrack="    << pointY
 181                     << "ztracklet=" << trackletZ[il]
 182                     << "ztrack="    << pointZ
 183                     << "num_tracklets=" << counterTracklet
 184                     << "\n";
 185
 186               }
 187             }
 188         }
 189     } // end TRD standalone
 190
 191
 192
 193     // TPC cluster selection for cosmic data
 194     if((track->GetTPCncls())<40) continue;
 195     // missing TPC propagation
 196     if(!(status&AliESDtrack::kTPCout)) continue;
 197     standAlone=0;
 198
 199     esd = track->GetESDinfo()->GetOuterParam();
 200     // calculate sector - does not matter if track ends in TPC or TRD - sector number independent
 201     Double_t alpha;
 202     alpha=-100;
 203     Int_t fSector=100;
 204     if(esd){
 205         alpha=esd->GetAlpha();
 206         fSector = (Int_t)((alpha+ TMath::Pi())/(20*TMath::Pi()/180));
 207         if((fSector>-1) && (fSector<18))
 208         {
 209         }
 210         else
 211         {
 212             continue;
 213         }
 214     }
 215
 216
 217
 218     // only these sectors have a TRD detector at the moment
 219    if(fSector==0||fSector==8||fSector==9||fSector==17)
 220     {
 221         trackTRD = track->GetTrack();
 222         if(!trackTRD) continue;
 223         AliTRDseedV1 *tracklet = 0x0;
 224         Int_t counterTracklet=0;
 225
 226
 227         for(Int_t itl = 0; itl < AliTRDgeometry::kNlayer; itl++){
 228             tracklet = trackTRD->GetTracklet(itl);
 229             if(!tracklet || !tracklet->IsOK()) continue;
 230             counterTracklet++;
 231             detTracklet=tracklet->GetDetector();
 232             trackletX[itl]=tracklet->GetX0();
 233             trackletY[itl]=tracklet->GetYfit(0);
 234             trackletZ[itl]=tracklet->GetZfit(0);
 235
 236             /*
 237             AliTRDcluster *c = 0x0;
 238             for(Int_t itime = 0; itime < AliTRDseedV1::kNtb; itime++){
 239                 c = tracklet->GetClusters(itime);
 240                 if(!c) continue;
 241 //                Float_t cluster_x = c->GetX();
 242 //                Bool_t isprop;
 243 //                isprop=kFALSE;
 244 //                isprop=AliTracker::PropagateTrackTo(esd,(Double_t)cluster_x,0.105,5,kFALSE);
 245 //                if(isprop)
 246 //                {
 247 //                    Int_t detector = c->GetDetector();
 248 //                    ((TH1F*)fContainer->At(fSector))->Fill((c->GetY())-(esd->GetY()));
 249 //                    if(c->GetY()-esd->GetY()>);
 250 //                    printf("diff: %f\n",c->GetY()-(esd->GetY()));
 251 //                }
 252             }
 253             */
 254
 255         } // loop over tracklets ends
 256
 257         if(counterTracklet==AliTRDgeometry::kNlayer)
 258         {
 259             AliTRDtrackerV1::FitRiemanTilt(const_cast<AliTRDtrackV1 *>(trackTRD), 0x0, kTRUE, counterTracklet, points);
 260         }
 261         else continue;
 262
 263
 264
 265         if(DebugLevel()>=1){
 266           for(Int_t il = 0; il < AliTRDgeometry::kNlayer; il++){
 267             //printf("---------------------------------------- %i %i %f %f %f \n",counterTracklet,il,points[il].GetX(),points[il].GetY(),points[il].GetZ());
 268             Double_t pointX=points[il].GetX();
 269             Double_t pointY=points[il].GetY();
 270             Double_t pointZ=points[il].GetZ();
 271
 272             (*DebugStream())   << "TrackletsinTRD"
 273                 << "standalone=" << standAlone
 274                 << "eventcounter=" << fEventCounter
 275                 << "layer="     << il
 276                 << "dettracklet=" << detTracklet
 277                 << "xtracklet=" << trackletX[il]
 278                 << "xtrack="    << pointX
 279                 << "ytracklet=" << trackletY[il]
 280                 << "ytrack="    << pointY
 281                 << "ztracklet=" << trackletZ[il]
 282                 << "ztrack="    << pointZ
 283                 << "num_tracklets=" << counterTracklet
 284                 << "\n";
 285           }
 286         }
 287
 288     }
 289   }
 290
 291
 292   PostData(1, fContainer);
 293 }
 294
 295