ITS/AliITSReconstructor.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  *                                                                        *
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  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 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 // class for ITS reconstruction                                              //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24 #include "Riostream.h"
  25 #include "AliITSReconstructor.h"
  26 #include "AliRun.h"
  27 #include "AliRawReader.h"
  28 #include "AliITSDetTypeRec.h"
  29 #include "AliITSgeom.h"
  30 #include "AliITSLoader.h"
  31 #include "AliITStrackerMI.h"
  32 #include "AliITStrackerV2.h"
  33 #include "AliITStrackerSA.h"
  34 #include "AliITSVertexerIons.h"
  35 #include "AliITSVertexerFast.h"
  36 #include "AliITSVertexerFixed.h"
  37 #include "AliITSVertexer3D.h"
  38 #include "AliITSVertexerZ.h"
  39 #include "AliITSVertexerCosmics.h"
  40 #include "AliESDEvent.h"
  41 #include "AliITSInitGeometry.h"
  42 #include "AliITSTrackleterSPDEff.h"
  43
  44
  45 ClassImp(AliITSReconstructor)
  46
  47 //___________________________________________________________________________
  48 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
  49 fDetTypeRec(0)
  50 {
  51   // Default constructor
  52 }
  53  //___________________________________________________________________________
  54 AliITSReconstructor::~AliITSReconstructor(){
  55 // destructor
  56   if(fDetTypeRec) delete fDetTypeRec;
  57 }
  58
  59 //______________________________________________________________________
  60 void AliITSReconstructor::Init() {
  61     // Initalize this constructor bet getting/creating the objects
  62     // nesseary for a proper ITS reconstruction.
  63     // Inputs:
  64     //   none.
  65     // Output:
  66     //   none.
  67     // Return:
  68     //   none.
  69
  70     AliITSInitGeometry initgeom;
  71     AliITSgeom *geom = initgeom.CreateAliITSgeom();
  72     AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
  73
  74     fDetTypeRec = new AliITSDetTypeRec();
  75     fDetTypeRec->SetITSgeom(geom);
  76     fDetTypeRec->SetDefaults();
  77
  78     return;
  79 }
  80
  81 //_____________________________________________________________________________
  82 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
  83 {
  84 // reconstruct clusters
  85
  86   Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
  87
  88   fDetTypeRec->SetTreeAddressD(digitsTree);
  89   fDetTypeRec->MakeBranch(clustersTree,"R");
  90   fDetTypeRec->SetTreeAddressR(clustersTree);
  91   fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",cluFindOpt);
  92 }
  93
  94 //_________________________________________________________________
  95 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
  96 {
  97   // reconstruct clusters from raw data
  98
  99   fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
 100   fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree);
 101 }
 102 //_____________________________________________________________________________
 103 AliTracker* AliITSReconstructor::CreateTrackleter() const
 104 {
 105 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
 106   if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
 107   //Int_t trackerOpt = GetRecoParam()->GetTracker();
 108   AliTracker* trackleter;
 109   trackleter = new AliITSTrackleterSPDEff();
 110   AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
 111   // here set cuts (from RecoParam)
 112   if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
 113   if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
 114   spdtrackleter->SetHistOn();
 115   spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
 116   spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
 117   spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
 118   spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
 119   if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
 120   spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
 121   return trackleter;
 122 }
 123
 124 //_____________________________________________________________________________
 125 AliTracker* AliITSReconstructor::CreateTracker() const
 126 {
 127 // create a ITS tracker
 128
 129   Int_t trackerOpt = GetRecoParam()->GetTracker();
 130   AliTracker* tracker;
 131   if (trackerOpt==1) {
 132     tracker = new AliITStrackerMI(0);
 133     AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
 134     mit->SetDetTypeRec(fDetTypeRec);
 135   }
 136   else if (trackerOpt==2) {
 137     tracker = new AliITStrackerV2(0);
 138   }
 139   else {
 140     tracker =  new AliITStrackerSA(0);  // inherits from AliITStrackerMI
 141     AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
 142     sat->SetDetTypeRec(fDetTypeRec);
 143     if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
 144     if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
 145         if(GetRecoParam()->GetInwardFindingSA()){
 146        sat->SetInwardFinding();
 147        sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
 148         }else{
 149       sat->SetOutwardFinding();
 150       sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
 151         }
 152     sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
 153   }
 154
 155   Int_t pidOpt = GetRecoParam()->GetPID();
 156
 157   AliITSReconstructor* nc = const_cast<AliITSReconstructor*>(this);
 158   /*
 159   if(pidOpt==1){
 160     Info("FillESD","ITS LandauFitPID option has been selected\n");
 161     nc->fItsPID = new AliITSpidESD2();
 162   }
 163   else{
 164     Info("FillESD","ITS default PID\n");
 165     Double_t parITS[] = {79.,0.13, 5.}; //IB: this is  "pp tuning"
 166     nc->fItsPID = new AliITSpidESD1(parITS);
 167   }
 168   */
 169   return tracker;
 170
 171 }
 172
 173 //_____________________________________________________________________________
 174 AliVertexer* AliITSReconstructor::CreateVertexer() const
 175 {
 176 // create a ITS vertexer
 177
 178   AliITSVertexer *vptr;
 179   Int_t vtxOpt = GetRecoParam()->GetVertexer();
 180   if(vtxOpt==3){
 181     AliInfo("AliITSVertexerIons has been selected");
 182     vptr =  new AliITSVertexerIons();
 183   }
 184   else if(vtxOpt==4){
 185     Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
 186                        GetRecoParam()->GetVertexerFastSmearY(),
 187                        GetRecoParam()->GetVertexerFastSmearZ()};
 188     AliInfo("AliITSVertexerFast has been selected");
 189     vptr = new AliITSVertexerFast(smear);
 190   }
 191   else if(vtxOpt==1){
 192     AliInfo("AliITSVertexerZ has been selected");
 193     vptr =  new AliITSVertexerZ();
 194   }
 195   else if(vtxOpt==2){
 196     AliInfo("AliITSVertexerCosmics has been selected");
 197     vptr = new AliITSVertexerCosmics();
 198   }
 199   else if(vtxOpt==5){
 200     AliInfo("Vertex is fixed in the position of the TDI\n");
 201     vptr = new AliITSVertexerFixed("TDI");
 202   }
 203   else if(vtxOpt==6){
 204     AliInfo("Vertex is fixed in the position of the TED\n");
 205     vptr = new AliITSVertexerFixed("TED");
 206   }
 207   else {
 208   // by default an AliITSVertexer3D object is instatiated
 209     AliITSVertexer3D*  vtxr = new AliITSVertexer3D();
 210     Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
 211     Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
 212     vtxr->SetWideFiducialRegion(dzw,drw);
 213     Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
 214     Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
 215     vtxr->SetNarrowFiducialRegion(dzn,drn);
 216     Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
 217     Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
 218     vtxr->SetDeltaPhiCuts(dphil,dphit);
 219     Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
 220     vtxr->SetDCACut(dcacut);
 221     Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
 222     vtxr->SetPileupAlgo(pileupAlgo);
 223     AliInfo(Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
 224     vptr = vtxr;
 225   }
 226   vptr->SetDetTypeRec(fDetTypeRec);
 227   return vptr;
 228 }
 229
 230 //_____________________________________________________________________________
 231 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
 232                                   AliESDEvent* esd) const
 233 {
 234 // make PID, find V0s and cascade
 235 /* Now done in AliESDpid
 236   if(fItsPID!=0) fItsPID->MakePID(esd);
 237   else AliError("!! cannot do the PID !!");
 238 */
 239 }