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 "AliRunLoader.h"
28 #include "AliRawReader.h"
29 #include "AliITSDetTypeRec.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 "AliITSVertexer3D.h"
38 #include "AliITSVertexerZ.h"
39 #include "AliITSVertexerCosmics.h"
40 #include "AliESDEvent.h"
41 #include "AliITSpidESD.h"
42 #include "AliITSpidESD1.h"
43 #include "AliITSpidESD2.h"
44 #include "AliITSInitGeometry.h"
47 ClassImp(AliITSReconstructor)
49 AliITSRecoParam *AliITSReconstructor::fgkRecoParam =0; // reconstruction parameters
51 //___________________________________________________________________________
52 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
56 // Default constructor
58 AliError("The Reconstruction parameters nonitialized - Used default one");
59 fgkRecoParam = AliITSRecoParam::GetHighFluxParam();
62 //___________________________________________________________________________
63 AliITSReconstructor::~AliITSReconstructor(){
66 if(fgkRecoParam) delete fgkRecoParam;
67 if(fDetTypeRec) delete fDetTypeRec;
69 //______________________________________________________________________
70 AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob),
72 fDetTypeRec(ob.fDetTypeRec)
78 //______________________________________________________________________
79 AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& ob ){
80 // Assignment operator
81 this->~AliITSReconstructor();
82 new(this) AliITSReconstructor(ob);
86 //______________________________________________________________________
87 void AliITSReconstructor::Init(AliRunLoader */*runLoader*/) {
88 // Initalize this constructor bet getting/creating the objects
89 // nesseary for a proper ITS reconstruction.
91 // AliRunLoader *runLoader Pointer to the run loader to allow
92 // the getting of files/folders data
93 // needed to do reconstruction
99 AliITSInitGeometry initgeom;
100 AliITSgeom *geom = initgeom.CreateAliITSgeom();
101 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
103 fDetTypeRec = new AliITSDetTypeRec();
104 fDetTypeRec->SetITSgeom(geom);
105 fDetTypeRec->SetDefaults();
110 //_____________________________________________________________________________
111 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
113 // reconstruct clusters
115 TString option = GetOption();
116 Bool_t clusfinder=kTRUE; // Default: V2 cluster finder
117 if(option.Contains("OrigCF"))clusfinder=kFALSE;
119 fDetTypeRec->SetTreeAddressD(digitsTree);
120 fDetTypeRec->MakeBranch(clustersTree,"R");
121 fDetTypeRec->SetTreeAddressR(clustersTree);
122 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",clusfinder);
125 //_________________________________________________________________
126 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
128 // reconstruct clusters from raw data
130 fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
131 fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree);
134 //_____________________________________________________________________________
135 AliTracker* AliITSReconstructor::CreateTracker(AliRunLoader* runLoader)const
137 // create a ITS tracker
140 TString selectedTracker = GetOption();
142 if (selectedTracker.Contains("MI")) {
143 tracker = new AliITStrackerMI(0);
145 else if (selectedTracker.Contains("V2")) {
146 tracker = new AliITStrackerV2(0);
149 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
150 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
151 if(selectedTracker.Contains("onlyITS"))sat->SetSAFlag(kTRUE);
152 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
153 if(selectedTracker.Contains("cosmics")||selectedTracker.Contains("COSMICS"))
154 sat->SetOuterStartLayer(AliITSgeomTGeo::GetNLayers()-2);
157 TString selectedPIDmethod = GetOption();
158 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
160 Error("CreateTracker", "ITS loader not found");
162 if(selectedPIDmethod.Contains("LandauFitPID")){
163 loader->AdoptITSpid(new AliITSpidESD2((AliITStrackerMI*)tracker,loader));
166 Double_t parITS[] = {0.15, 10.}; //PH positions of the MIP peak
167 loader->AdoptITSpid(new AliITSpidESD1(parITS));
173 //_____________________________________________________________________________
174 AliVertexer* AliITSReconstructor::CreateVertexer(AliRunLoader* /*runLoader*/) const
176 // create a ITS vertexer
178 TString selectedVertexer = GetOption();
179 if(selectedVertexer.Contains("ions") || selectedVertexer.Contains("IONS")){
180 Info("CreateVertexer","a AliITSVertexerIons object has been selected\n");
181 return new AliITSVertexerIons("null");
183 if(selectedVertexer.Contains("smear") || selectedVertexer.Contains("SMEAR")){
184 Double_t smear[3]={0.005,0.005,0.01};
185 Info("CreateVertexer","a AliITSVertexerFast object has been selected\n");
186 return new AliITSVertexerFast(smear);
188 if(selectedVertexer.Contains("3d") || selectedVertexer.Contains("3D")){
189 Info("CreateVertexer","a AliITSVertexer3D object has been selected\n");
190 return new AliITSVertexer3D("null");
192 if(selectedVertexer.Contains("cosmics") || selectedVertexer.Contains("COSMICS")){
193 Info("CreateVertexer","a AliITSVertexerCosmics object has been selected\n");
194 return new AliITSVertexerCosmics();
196 // by default an AliITSVertexerZ object is instatiated
197 Info("CreateVertexer","a AliITSVertexerZ object has been selected\n");
198 return new AliITSVertexerZ("null");
201 //_____________________________________________________________________________
202 void AliITSReconstructor::FillESD(AliRunLoader* runLoader,
203 AliESDEvent* esd) const
205 // make PID, find V0s and cascade
206 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
207 AliITSpidESD *pidESD = 0;
208 TString selectedPIDmethod = GetOption();
209 if(selectedPIDmethod.Contains("LandauFitPID")){
210 Info("FillESD","ITS LandauFitPID option has been selected\n");
211 pidESD=loader->GetITSpid();
214 Info("FillESD","ITS default PID\n");
215 pidESD=loader->GetITSpid();
218 pidESD->MakePID(esd);
221 Error("FillESD","!! cannot do the PID !!\n");