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 "AliITSVertexerFixed.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"
45 #include "AliITSTrackleterSPDEff.h"
48 ClassImp(AliITSReconstructor)
50 //___________________________________________________________________________
51 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
55 // Default constructor
57 //___________________________________________________________________________
58 AliITSReconstructor::~AliITSReconstructor(){
61 if(fDetTypeRec) delete fDetTypeRec;
63 //______________________________________________________________________
64 AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob),
66 fDetTypeRec(ob.fDetTypeRec)
72 //______________________________________________________________________
73 AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& ob ){
74 // Assignment operator
75 this->~AliITSReconstructor();
76 new(this) AliITSReconstructor(ob);
80 //______________________________________________________________________
81 void AliITSReconstructor::Init() {
82 // Initalize this constructor bet getting/creating the objects
83 // nesseary for a proper ITS reconstruction.
91 AliITSInitGeometry initgeom;
92 AliITSgeom *geom = initgeom.CreateAliITSgeom();
93 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
95 fDetTypeRec = new AliITSDetTypeRec();
96 fDetTypeRec->SetITSgeom(geom);
97 fDetTypeRec->SetDefaults();
102 //_____________________________________________________________________________
103 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
105 // reconstruct clusters
107 Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
109 fDetTypeRec->SetTreeAddressD(digitsTree);
110 fDetTypeRec->MakeBranch(clustersTree,"R");
111 fDetTypeRec->SetTreeAddressR(clustersTree);
112 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",cluFindOpt);
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);
123 //_____________________________________________________________________________
124 AliTracker* AliITSReconstructor::CreateTrackleter() const
126 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
127 if(!GetRecoParam()->GetComputePlaneEff() && !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
128 //Int_t trackerOpt = GetRecoParam()->GetTracker();
129 AliTracker* trackleter;
130 trackleter = new AliITSTrackleterSPDEff();
131 AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
132 // here set cuts (from RecoParam)
133 if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
134 if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
135 spdtrackleter->SetHistOn();
136 spdtrackleter->SetPhiWindow(GetRecoParam()->GetTrackleterPhiWindow());
137 spdtrackleter->SetZetaWindow(GetRecoParam()->GetTrackleterZetaWindow());
138 spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
139 spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
140 if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
141 //spdtrackleter->(GetRecoParam()->GetMinContVtxPlaneEff()); // to be implemented
145 //_____________________________________________________________________________
146 AliTracker* AliITSReconstructor::CreateTracker() const
148 // create a ITS tracker
150 Int_t trackerOpt = GetRecoParam()->GetTracker();
153 tracker = new AliITStrackerMI(0);
154 AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
155 mit->SetDetTypeRec(fDetTypeRec);
157 else if (trackerOpt==2) {
158 tracker = new AliITStrackerV2(0);
161 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
162 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
163 sat->SetDetTypeRec(fDetTypeRec);
164 if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
165 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
166 if(GetRecoParam()->GetInwardFindingSA()){
167 sat->SetInwardFinding();
168 sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
170 sat->SetOutwardFinding();
171 sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
173 sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
176 Int_t pidOpt = GetRecoParam()->GetPID();
178 AliITSReconstructor* nc = const_cast<AliITSReconstructor*>(this);
180 Info("FillESD","ITS LandauFitPID option has been selected\n");
181 nc->fItsPID = new AliITSpidESD2((AliITStrackerMI*)tracker);
184 Info("FillESD","ITS default PID\n");
185 Double_t parITS[] = {79.,0.13, 5.}; //IB: this is "pp tuning"
186 nc->fItsPID = new AliITSpidESD1(parITS);
193 //_____________________________________________________________________________
194 AliVertexer* AliITSReconstructor::CreateVertexer() const
196 // create a ITS vertexer
198 AliITSVertexer *vptr;
199 Int_t vtxOpt = GetRecoParam()->GetVertexer();
201 Info("CreateVertexer","a AliITSVertexerIons object has been selected\n");
202 vptr = new AliITSVertexerIons();
205 Double_t smear[3]={0.005,0.005,0.01};
206 Info("CreateVertexer","a AliITSVertexerFast object has been selected\n");
207 vptr = new AliITSVertexerFast(smear);
210 Info("CreateVertexer","a AliITSVertexerZ object has been selected\n");
211 vptr = new AliITSVertexerZ();
214 Info("CreateVertexer","a AliITSVertexerCosmics object has been selected\n");
215 vptr = new AliITSVertexerCosmics();
218 Info("CreateVertexer","vertex is fixed in the position of the TDI\n");
219 vptr = new AliITSVertexerFixed("TDI");
222 Info("CreateVertexer","vertex is fixed in the position of the TED\n");
223 vptr = new AliITSVertexerFixed("TED");
226 // by default an AliITSVertexer3D object is instatiated
227 Info("CreateVertexer","a AliITSVertexer3D object has been selected\n");
228 AliITSVertexer3D* vtxr = new AliITSVertexer3D();
229 Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
230 Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
231 vtxr->SetWideFiducialRegion(dzw,drw);
232 Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
233 Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
234 vtxr->SetNarrowFiducialRegion(dzn,drn);
235 Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
236 Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
237 vtxr->SetDeltaPhiCuts(dphil,dphit);
238 Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
239 vtxr->SetDCACut(dcacut);
242 vptr->SetDetTypeRec(fDetTypeRec);
246 //_____________________________________________________________________________
247 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree *clustersTree,
248 AliESDEvent* esd) const
250 // make PID, find V0s and cascade
252 Int_t pidOpt = GetRecoParam()->GetPID();
254 fItsPID->MakePID(clustersTree,esd);
256 fItsPID->MakePID(esd);
260 Error("FillESD","!! cannot do the PID !!\n");