PWG1/TRD/AliTRDmultiplicity.cxx

   1 /**************************************************************************
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   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("Multiplicity", "Barrel Tracking Multiplicity")
  59   ,fEventCounter(0)
  60 {
  61   //
  62   // Default constructor
  63     //
  64 }
  65
  66 //____________________________________________________________________
  67 AliTRDmultiplicity::~AliTRDmultiplicity()
  68 {
  69 }
  70
  71 //____________________________________________________________________
  72 void  AliTRDmultiplicity::CreateOutputObjects()
  73 {
  74   //
  75   // Create output objects
  76   //
  77
  78   OpenFile(0, "RECREATE");
  79
  80   TH1 *h = 0x0;
  81   fContainer = new TObjArray();
  82   for(Int_t is=0; is<AliTRDgeometry::kNsector; is++){
  83   fContainer->Add(h = new TH1F(Form("h_sector_%i", is), " ", 100,-10,10));
  84   }
  85 }
  86
  87 //____________________________________________________________________
  88 void AliTRDmultiplicity::Exec(Option_t *)
  89 {
  90   //
  91   // Do it
  92   //
  93
  94
  95
  96   ULong_t status;
  97   AliTRDtrackInfo     *track = 0x0;
  98   AliExternalTrackParam *esd = 0x0;
  99   AliTRDtrackV1 *trackTRD = 0x0;
 100   Double_t x_anode[AliTRDgeometry::kNlayer] = {300.2, 312.8, 325.4, 338.0, 350.6, 363.2}; // Take the default X0
 101   Int_t standAlone=1;
 102   fEventCounter++;
 103
 104
 105   for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){
 106     track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk);
 107     if(!track->HasESDtrack()) continue;
 108     status = track->GetStatus();
 109
 110     AliTrackPoint points[6];
 111     Float_t xyz[3];
 112     memset(xyz, 0, sizeof(Float_t) * 3);
 113     Float_t trackletX[6];
 114     Float_t trackletY[6];
 115     Float_t trackletZ[6];
 116     for(Int_t a=0;a<6;a++)
 117     {
 118         xyz[0] = x_anode[a];
 119         points[a].SetXYZ(xyz);
 120         trackletX[a]=-1000;
 121         trackletY[a]=-1000;
 122         trackletZ[a]=-1000;
 123     }
 124     Int_t detTracklet=600;
 125
 126
 127
 128     // TRD standalone
 129     if(((status&AliESDtrack::kTRDout)>0) && !((status&AliESDtrack::kTRDin)>0))
 130     {
 131         trackTRD = track->GetTrack();
 132
 133         if(trackTRD)
 134         {
 135             AliTRDseedV1 *tracklet = 0x0;
 136             Int_t counterTracklet=0;
 137             for(Int_t itl = 0; itl < AliTRDgeometry::kNlayer; itl++)
 138             {
 139                 tracklet = trackTRD->GetTracklet(itl);
 140                 if(tracklet)
 141                 {
 142                     if(tracklet->IsOK())
 143                     {
 144                         counterTracklet++;
 145                         detTracklet=tracklet->GetDetector();
 146                         //printf("%i %f %f \n",itl,tracklet->GetYfit(0),tracklet->GetZfit(0));
 147                         trackletX[itl]=tracklet->GetX0();
 148                         trackletY[itl]=tracklet->GetYfit(0);
 149                         trackletZ[itl]=tracklet->GetZfit(0);
 150                     }
 151                 }
 152             }
 153             // this cut is needed otherwise the order of tracklets in the fit function is not correct
 154             if(counterTracklet==AliTRDgeometry::kNlayer) AliTRDtrackerV1::FitRiemanTilt(const_cast<AliTRDtrackV1 *>(trackTRD), 0x0, kTRUE, counterTracklet, points);
 155             else continue;
 156
 157             if(DebugLevel()>=1){
 158               for(Int_t il = 0; il < AliTRDgeometry::kNlayer; il++){
 159                 //printf("---------------------------------------- %i %i %f %f %f \n",counterTracklet,il,points[il].GetX(),points[il].GetY(),points[il].GetZ());
 160                 Double_t pointX=points[il].GetX();
 161                 Double_t pointY=points[il].GetY();
 162                 Double_t pointZ=points[il].GetZ();
 163
 164
 165                 (*DebugStream())   << "TrackletsinTRD"
 166                     << "standalone=" << standAlone
 167                     << "eventcounter=" << fEventCounter
 168                     << "layer="     << il
 169                     << "dettracklet=" << detTracklet
 170                     << "xtracklet=" << trackletX[il]
 171                     << "xtrack="    << pointX
 172                     << "ytracklet=" << trackletY[il]
 173                     << "ytrack="    << pointY
 174                     << "ztracklet=" << trackletZ[il]
 175                     << "ztrack="    << pointZ
 176                     << "num_tracklets=" << counterTracklet
 177                     << "\n";
 178
 179               }
 180             }
 181         }
 182     } // end TRD standalone
 183
 184
 185
 186     // TPC cluster selection for cosmic data
 187     if((track->GetTPCncls())<40) continue;
 188     // missing TPC propagation
 189     if(!(status&AliESDtrack::kTPCout)) continue;
 190     standAlone=0;
 191
 192     esd = track->GetESDinfo()->GetOuterParam();
 193     // calculate sector - does not matter if track ends in TPC or TRD - sector number independent
 194     Double_t alpha;
 195     alpha=-100;
 196     Int_t fSector=100;
 197     if(esd){
 198         alpha=esd->GetAlpha();
 199         fSector = (Int_t)((alpha+ TMath::Pi())/(20*TMath::Pi()/180));
 200         if((fSector>-1) && (fSector<18))
 201         {
 202         }
 203         else
 204         {
 205             continue;
 206         }
 207     }
 208
 209
 210
 211     // only these sectors have a TRD detector at the moment
 212    if(fSector==0||fSector==8||fSector==9||fSector==17)
 213     {
 214         trackTRD = track->GetTrack();
 215         if(!trackTRD) continue;
 216         AliTRDseedV1 *tracklet = 0x0;
 217         Int_t counterTracklet=0;
 218
 219
 220         for(Int_t itl = 0; itl < AliTRDgeometry::kNlayer; itl++){
 221             tracklet = trackTRD->GetTracklet(itl);
 222             if(!tracklet || !tracklet->IsOK()) continue;
 223             counterTracklet++;
 224             detTracklet=tracklet->GetDetector();
 225             trackletX[itl]=tracklet->GetX0();
 226             trackletY[itl]=tracklet->GetYfit(0);
 227             trackletZ[itl]=tracklet->GetZfit(0);
 228
 229             /*
 230             AliTRDcluster *c = 0x0;
 231             for(Int_t itime = 0; itime < AliTRDseedV1::kNtb; itime++){
 232                 c = tracklet->GetClusters(itime);
 233                 if(!c) continue;
 234 //                Float_t cluster_x = c->GetX();
 235 //                Bool_t isprop;
 236 //                isprop=kFALSE;
 237 //                isprop=AliTracker::PropagateTrackTo(esd,(Double_t)cluster_x,0.105,5,kFALSE);
 238 //                if(isprop)
 239 //                {
 240 //                    Int_t detector = c->GetDetector();
 241 //                    ((TH1F*)fContainer->At(fSector))->Fill((c->GetY())-(esd->GetY()));
 242 //                    if(c->GetY()-esd->GetY()>);
 243 //                    printf("diff: %f\n",c->GetY()-(esd->GetY()));
 244 //                }
 245             }
 246             */
 247
 248         } // loop over tracklets ends
 249
 250         if(counterTracklet==AliTRDgeometry::kNlayer)
 251         {
 252             AliTRDtrackerV1::FitRiemanTilt(const_cast<AliTRDtrackV1 *>(trackTRD), 0x0, kTRUE, counterTracklet, points);
 253         }
 254         else continue;
 255
 256
 257
 258         if(DebugLevel()>=1){
 259           for(Int_t il = 0; il < AliTRDgeometry::kNlayer; il++){
 260             //printf("---------------------------------------- %i %i %f %f %f \n",counterTracklet,il,points[il].GetX(),points[il].GetY(),points[il].GetZ());
 261             Double_t pointX=points[il].GetX();
 262             Double_t pointY=points[il].GetY();
 263             Double_t pointZ=points[il].GetZ();
 264
 265             (*DebugStream())   << "TrackletsinTRD"
 266                 << "standalone=" << standAlone
 267                 << "eventcounter=" << fEventCounter
 268                 << "layer="     << il
 269                 << "dettracklet=" << detTracklet
 270                 << "xtracklet=" << trackletX[il]
 271                 << "xtrack="    << pointX
 272                 << "ytracklet=" << trackletY[il]
 273                 << "ytrack="    << pointY
 274                 << "ztracklet=" << trackletZ[il]
 275                 << "ztrack="    << pointZ
 276                 << "num_tracklets=" << counterTracklet
 277                 << "\n";
 278           }
 279         }
 280
 281     }
 282   }
 283
 284
 285   PostData(0, fContainer);
 286 }
 287
 288