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 "AliITSVertexerFast.h"
  36 #include "AliITSVertexerFixed.h"
  37 #include "AliITSVertexer3D.h"
  38 #include "AliITSVertexerZ.h"
  39 #include "AliITSVertexerZD.h"
  40 #include "AliITSVertexerCosmics.h"
  41 #include "AliITSInitGeometry.h"
  42 #include "AliITSTrackleterSPDEff.h"
  43 #include "AliITSMultReconstructor.h"
  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   TString recopt = GetRecoParam()->GetOptReco();
 103   fDetTypeRec->SetTreeAddressD(digitsTree);
 104   fDetTypeRec->MakeBranch(clustersTree,"R");
 105   fDetTypeRec->SetTreeAddressR(clustersTree);
 106   fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,recopt.Data(),cluFindOpt);
 107 }
 108
 109 //_________________________________________________________________
 110 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
 111 {
 112   // reconstruct clusters from raw data
 113   TString recopt = GetRecoParam()->GetOptReco();
 114   fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
 115   fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree,recopt.Data());
 116 }
 117
 118 //_____________________________________________________________________________
 119 AliTrackleter* AliITSReconstructor::CreateMultFinder() const
 120 {
 121   // create the SPD trackeleter for mult. reconstruction
 122   AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
 123   multReco->SetHistOn(kFALSE);
 124   multReco->SetDetTypeRec(fDetTypeRec);
 125   return multReco;
 126 }
 127
 128 //_____________________________________________________________________________
 129 AliTracker* AliITSReconstructor::CreateTrackleter() const
 130 {
 131 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
 132   if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
 133   //Int_t trackerOpt = GetRecoParam()->GetTracker();
 134   AliTracker* trackleter;
 135   trackleter = new AliITSTrackleterSPDEff();
 136   AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
 137   // here set cuts (from RecoParam)
 138   if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
 139   if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
 140   spdtrackleter->SetHistOn();
 141   spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
 142   spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
 143   spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
 144   spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
 145   if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
 146   spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
 147   return trackleter;
 148 }
 149
 150 //_____________________________________________________________________________
 151 AliTracker* AliITSReconstructor::CreateTracker() const
 152 {
 153 // create a ITS tracker
 154
 155   Int_t trackerOpt = GetRecoParam()->GetTracker();
 156   AliTracker* tracker;
 157   if (trackerOpt==1) {
 158     tracker = new AliITStrackerMI(0);
 159     AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
 160     mit->SetDetTypeRec(fDetTypeRec);
 161   }
 162   else if (trackerOpt==2) {
 163     tracker = new AliITStrackerV2(0);
 164   }
 165   else {
 166     tracker =  new AliITStrackerSA(0);  // inherits from AliITStrackerMI
 167     AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
 168     sat->SetDetTypeRec(fDetTypeRec);
 169     if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
 170     if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
 171         if(GetRecoParam()->GetInwardFindingSA()){
 172        sat->SetInwardFinding();
 173        sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
 174         }else{
 175       sat->SetOutwardFinding();
 176       sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
 177         }
 178     sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
 179   }
 180
 181   return tracker;
 182
 183 }
 184
 185 //_____________________________________________________________________________
 186 AliVertexer* AliITSReconstructor::CreateVertexer() const
 187 {
 188 // create a ITS vertexer
 189
 190   AliITSVertexer *vptr = NULL;
 191   Int_t vtxOpt = GetRecoParam()->GetVertexer();
 192   if(vtxOpt==3){
 193     AliFatal("Option AliITSVertexerIons is no longer supported");
 194     return vptr;
 195   }
 196   else if(vtxOpt==4){
 197     Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
 198                        GetRecoParam()->GetVertexerFastSmearY(),
 199                        GetRecoParam()->GetVertexerFastSmearZ()};
 200     AliDebug(1,"AliITSVertexerFast has been selected");
 201     vptr = new AliITSVertexerFast(smear);
 202   }
 203   else if(vtxOpt==1){
 204     AliDebug(1,"AliITSVertexerZ has been selected");
 205     AliITSVertexerZ* vtxrz =  new AliITSVertexerZ();
 206     Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
 207     if(pileupAlgo==3) vtxrz->SetSearchForPileup(kFALSE);
 208     vptr = vtxrz;
 209   }
 210   else if(vtxOpt==2){
 211     AliDebug(1,"AliITSVertexerCosmics has been selected");
 212     vptr = new AliITSVertexerCosmics();
 213   }
 214   else if(vtxOpt==5){
 215     AliDebug(1,"Vertex is fixed in the position of the TDI\n");
 216     vptr = new AliITSVertexerFixed("TDI");
 217   }
 218   else if(vtxOpt==6){
 219     AliDebug(1,"Vertex is fixed in the position of the TED\n");
 220     vptr = new AliITSVertexerFixed("TED");
 221   }
 222   else if(vtxOpt==7){
 223     AliDebug(1,"VertexerZD:  reconstruction of the Z coordinate with SDD \n");
 224     AliITSVertexerZD*vtxrz = new AliITSVertexerZD();
 225     vtxrz->SetSearchForPileup(kFALSE);
 226     vptr = vtxrz;
 227   }
 228   else {
 229   // by default an AliITSVertexer3D object is instatiated
 230     AliITSVertexer3D*  vtxr =
 231        new AliITSVertexer3D(GetRecoParam()->GetVertexer3DWideFiducialRegionZ());
 232     Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
 233     Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
 234     vtxr->SetWideFiducialRegion(dzw,drw);
 235     Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
 236     Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
 237     vtxr->SetNarrowFiducialRegion(dzn,drn);
 238     Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
 239     Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
 240     vtxr->SetDeltaPhiCuts(dphil,dphit);
 241     Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
 242     vtxr->SetDCACut(dcacut);
 243     Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
 244     vtxr->SetPileupAlgo(pileupAlgo);
 245     UChar_t highmultAlgo=GetRecoParam()->GetSPDVertexerHighMultAlgo();
 246     vtxr->SetHighMultAlgo(highmultAlgo);
 247     AliDebug(1,Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
 248     vptr = vtxr;
 249   }
 250   vptr->SetDetTypeRec(fDetTypeRec);
 251   return vptr;
 252 }
 253
 254 //_____________________________________________________________________________
 255 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
 256                                   AliESDEvent* /* esd */) const
 257 {
 258 // make PID, find V0s and cascade
 259 /* Now done in AliESDpid
 260   if(fItsPID!=0) fItsPID->MakePID(esd);
 261   else AliError("!! cannot do the PID !!");
 262 */
 263 }