1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // class for ITS reconstruction //
22 ///////////////////////////////////////////////////////////////////////////////
24 #include "Riostream.h"
25 #include "AliITSReconstructor.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 "AliITSVertexer3D.h"
37 #include "AliITSVertexerZ.h"
38 #include "AliITSVertexerCosmics.h"
39 #include "AliESDEvent.h"
40 #include "AliITSpidESD.h"
41 #include "AliITSpidESD1.h"
42 #include "AliITSpidESD2.h"
43 #include "AliITSInitGeometry.h"
46 ClassImp(AliITSReconstructor)
48 //___________________________________________________________________________
49 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
53 // Default constructor
55 //___________________________________________________________________________
56 AliITSReconstructor::~AliITSReconstructor(){
59 if(fDetTypeRec) delete fDetTypeRec;
61 //______________________________________________________________________
62 AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob),
64 fDetTypeRec(ob.fDetTypeRec)
70 //______________________________________________________________________
71 AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& ob ){
72 // Assignment operator
73 this->~AliITSReconstructor();
74 new(this) AliITSReconstructor(ob);
78 //______________________________________________________________________
79 void AliITSReconstructor::Init() {
80 // Initalize this constructor bet getting/creating the objects
81 // nesseary for a proper ITS reconstruction.
89 AliITSInitGeometry initgeom;
90 AliITSgeom *geom = initgeom.CreateAliITSgeom();
91 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
93 fDetTypeRec = new AliITSDetTypeRec();
94 fDetTypeRec->SetITSgeom(geom);
95 fDetTypeRec->SetDefaults();
100 //_____________________________________________________________________________
101 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
103 // reconstruct clusters
105 Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
106 Bool_t useV2=kTRUE; // Default: V2 cluster finder
107 if(cluFindOpt==1) useV2=kFALSE;
109 fDetTypeRec->SetTreeAddressD(digitsTree);
110 fDetTypeRec->MakeBranch(clustersTree,"R");
111 fDetTypeRec->SetTreeAddressR(clustersTree);
112 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",useV2);
115 //_________________________________________________________________
116 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
118 // reconstruct clusters from raw data
120 fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
121 fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree);
124 //_____________________________________________________________________________
125 AliTracker* AliITSReconstructor::CreateTracker() const
127 // create a ITS tracker
129 Int_t trackerOpt = GetRecoParam()->GetTracker();
132 tracker = new AliITStrackerMI(0);
133 AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
134 mit->SetDetTypeRec(fDetTypeRec);
136 else if (trackerOpt==2) {
137 tracker = new AliITStrackerV2(0);
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 sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
148 Int_t pidOpt = GetRecoParam()->GetPID();
150 AliITSReconstructor* nc = const_cast<AliITSReconstructor*>(this);
152 Info("FillESD","ITS LandauFitPID option has been selected\n");
153 nc->fItsPID = new AliITSpidESD2((AliITStrackerMI*)tracker);
156 Info("FillESD","ITS default PID\n");
157 Double_t parITS[] = {79.,0.13, 5.}; //IB: this is "pp tuning"
158 nc->fItsPID = new AliITSpidESD1(parITS);
165 //_____________________________________________________________________________
166 AliVertexer* AliITSReconstructor::CreateVertexer() const
168 // create a ITS vertexer
170 Int_t vtxOpt = GetRecoParam()->GetVertexer();
172 Info("CreateVertexer","a AliITSVertexerIons object has been selected\n");
173 return new AliITSVertexerIons();
176 Double_t smear[3]={0.005,0.005,0.01};
177 Info("CreateVertexer","a AliITSVertexerFast object has been selected\n");
178 return new AliITSVertexerFast(smear);
181 Info("CreateVertexer","a AliITSVertexerZ object has been selected\n");
182 return new AliITSVertexerZ();
185 Info("CreateVertexer","a AliITSVertexerCosmics object has been selected\n");
186 return new AliITSVertexerCosmics();
188 // by default an AliITSVertexer3D object is instatiated
189 Info("CreateVertexer","a AliITSVertexer3D object has been selected\n");
190 return new AliITSVertexer3D();
193 //_____________________________________________________________________________
194 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree *clustersTree,
195 AliESDEvent* esd) const
197 // make PID, find V0s and cascade
199 Int_t pidOpt = GetRecoParam()->GetPID();
201 fItsPID->MakePID(clustersTree,esd);
203 fItsPID->MakePID(esd);
207 Error("FillESD","!! cannot do the PID !!\n");