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  *                                                                        *
   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 /* $Id$ */
  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 "AliESDEvent.h"
  29 #include "AliESDpid.h"
  30 #include "AliITSgeom.h"
  31 #include "AliITSLoader.h"
  32 #include "AliITStrackerMI.h"
  33 #include "AliITStrackerV2.h"
  34 #include "AliITStrackerSA.h"
  35 #include "AliITSVertexerIons.h"
  36 #include "AliITSVertexerFast.h"
  37 #include "AliITSVertexerFixed.h"
  38 #include "AliITSVertexer3D.h"
  39 #include "AliITSVertexerZ.h"
  40 #include "AliITSVertexerCosmics.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 void AliITSReconstructor::GetPidSettings(AliESDpid *ESDpid) {
  60   //
  61   // pass PID settings from AliITSRecoParam to AliESDpid
  62   //
  63   Int_t pidOpt = GetRecoParam()->GetPID();
  64
  65   if(pidOpt==1){
  66     AliDebug(1,"ITS LandauFitPID option has been selected\n");
  67     ESDpid->SetITSPIDmethod(AliESDpid::kITSLikelihood);
  68   }
  69   else{
  70     AliDebug(1,"ITS default PID\n");
  71     ESDpid->SetITSPIDmethod(AliESDpid::kITSTruncMean);
  72   }
  73 }
  74 //______________________________________________________________________
  75 void AliITSReconstructor::Init() {
  76     // Initalize this constructor bet getting/creating the objects
  77     // nesseary for a proper ITS reconstruction.
  78     // Inputs:
  79     //   none.
  80     // Output:
  81     //   none.
  82     // Return:
  83     //   none.
  84
  85     AliITSInitGeometry initgeom;
  86     AliITSgeom *geom = initgeom.CreateAliITSgeom();
  87     AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
  88
  89     fDetTypeRec = new AliITSDetTypeRec();
  90     fDetTypeRec->SetITSgeom(geom);
  91     fDetTypeRec->SetDefaults();
  92
  93     return;
  94 }
  95
  96 //_____________________________________________________________________________
  97 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
  98 {
  99 // reconstruct clusters
 100
 101   Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
 102
 103   fDetTypeRec->SetTreeAddressD(digitsTree);
 104   fDetTypeRec->MakeBranch(clustersTree,"R");
 105   fDetTypeRec->SetTreeAddressR(clustersTree);
 106   fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",cluFindOpt);
 107 }
 108
 109 //_________________________________________________________________
 110 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
 111 {
 112   // reconstruct clusters from raw data
 113
 114   fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
 115   fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree);
 116 }
 117 //_____________________________________________________________________________
 118 AliTracker* AliITSReconstructor::CreateTrackleter() const
 119 {
 120 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
 121   if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
 122   //Int_t trackerOpt = GetRecoParam()->GetTracker();
 123   AliTracker* trackleter;
 124   trackleter = new AliITSTrackleterSPDEff();
 125   AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
 126   // here set cuts (from RecoParam)
 127   if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
 128   if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
 129   spdtrackleter->SetHistOn();
 130   spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
 131   spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
 132   spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
 133   spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
 134   if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
 135   spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
 136   return trackleter;
 137 }
 138
 139 //_____________________________________________________________________________
 140 AliTracker* AliITSReconstructor::CreateTracker() const
 141 {
 142 // create a ITS tracker
 143
 144   Int_t trackerOpt = GetRecoParam()->GetTracker();
 145   AliTracker* tracker;
 146   if (trackerOpt==1) {
 147     tracker = new AliITStrackerMI(0);
 148     AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
 149     mit->SetDetTypeRec(fDetTypeRec);
 150   }
 151   else if (trackerOpt==2) {
 152     tracker = new AliITStrackerV2(0);
 153   }
 154   else {
 155     tracker =  new AliITStrackerSA(0);  // inherits from AliITStrackerMI
 156     AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
 157     sat->SetDetTypeRec(fDetTypeRec);
 158     if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
 159     if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
 160         if(GetRecoParam()->GetInwardFindingSA()){
 161        sat->SetInwardFinding();
 162        sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
 163         }else{
 164       sat->SetOutwardFinding();
 165       sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
 166         }
 167     sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
 168   }
 169
 170   return tracker;
 171
 172 }
 173
 174 //_____________________________________________________________________________
 175 AliVertexer* AliITSReconstructor::CreateVertexer() const
 176 {
 177 // create a ITS vertexer
 178
 179   AliITSVertexer *vptr;
 180   Int_t vtxOpt = GetRecoParam()->GetVertexer();
 181   if(vtxOpt==3){
 182     AliDebug(1,"AliITSVertexerIons has been selected");
 183     vptr =  new AliITSVertexerIons();
 184   }
 185   else if(vtxOpt==4){
 186     Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
 187                        GetRecoParam()->GetVertexerFastSmearY(),
 188                        GetRecoParam()->GetVertexerFastSmearZ()};
 189     AliDebug(1,"AliITSVertexerFast has been selected");
 190     vptr = new AliITSVertexerFast(smear);
 191   }
 192   else if(vtxOpt==1){
 193     AliDebug(1,"AliITSVertexerZ has been selected");
 194     vptr =  new AliITSVertexerZ();
 195   }
 196   else if(vtxOpt==2){
 197     AliDebug(1,"AliITSVertexerCosmics has been selected");
 198     vptr = new AliITSVertexerCosmics();
 199   }
 200   else if(vtxOpt==5){
 201     AliDebug(1,"Vertex is fixed in the position of the TDI\n");
 202     vptr = new AliITSVertexerFixed("TDI");
 203   }
 204   else if(vtxOpt==6){
 205     AliDebug(1,"Vertex is fixed in the position of the TED\n");
 206     vptr = new AliITSVertexerFixed("TED");
 207   }
 208   else {
 209   // by default an AliITSVertexer3D object is instatiated
 210     AliITSVertexer3D*  vtxr = new AliITSVertexer3D();
 211     Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
 212     Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
 213     vtxr->SetWideFiducialRegion(dzw,drw);
 214     Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
 215     Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
 216     vtxr->SetNarrowFiducialRegion(dzn,drn);
 217     Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
 218     Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
 219     vtxr->SetDeltaPhiCuts(dphil,dphit);
 220     Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
 221     vtxr->SetDCACut(dcacut);
 222     Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
 223     vtxr->SetPileupAlgo(pileupAlgo);
 224     AliDebug(1,Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
 225     vptr = vtxr;
 226   }
 227   vptr->SetDetTypeRec(fDetTypeRec);
 228   return vptr;
 229 }
 230
 231 //_____________________________________________________________________________
 232 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
 233                                   AliESDEvent* /* esd */) const
 234 {
 235 // make PID, find V0s and cascade
 236 /* Now done in AliESDpid
 237   if(fItsPID!=0) fItsPID->MakePID(esd);
 238   else AliError("!! cannot do the PID !!");
 239 */
 240 }