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 "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 "AliITSVertexerCosmics.h"
40 #include "AliITSInitGeometry.h"
41 #include "AliITSTrackleterSPDEff.h"
42 #include "AliITSMultReconstructor.h"
44 ClassImp(AliITSReconstructor)
46 //___________________________________________________________________________
47 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
50 // Default constructor
52 //___________________________________________________________________________
53 AliITSReconstructor::~AliITSReconstructor(){
55 if(fDetTypeRec) delete fDetTypeRec;
57 //____________________________________________________________________________
58 void AliITSReconstructor::GetPidSettings(AliESDpid *ESDpid) {
60 // pass PID settings from AliITSRecoParam to AliESDpid
62 Int_t pidOpt = GetRecoParam()->GetPID();
65 AliDebug(1,"ITS LandauFitPID option has been selected\n");
66 ESDpid->SetITSPIDmethod(AliESDpid::kITSLikelihood);
69 AliDebug(1,"ITS default PID\n");
70 ESDpid->SetITSPIDmethod(AliESDpid::kITSTruncMean);
73 //______________________________________________________________________
74 void AliITSReconstructor::Init() {
75 // Initalize this constructor bet getting/creating the objects
76 // nesseary for a proper ITS reconstruction.
84 AliITSInitGeometry initgeom;
85 AliITSgeom *geom = initgeom.CreateAliITSgeom();
86 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
88 fDetTypeRec = new AliITSDetTypeRec();
89 fDetTypeRec->SetITSgeom(geom);
90 fDetTypeRec->SetDefaults();
95 //_____________________________________________________________________________
96 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
98 // reconstruct clusters
100 Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
101 TString recopt = GetRecoParam()->GetOptReco();
102 fDetTypeRec->SetTreeAddressD(digitsTree);
103 fDetTypeRec->MakeBranch(clustersTree,"R");
104 fDetTypeRec->SetTreeAddressR(clustersTree);
105 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,recopt.Data(),cluFindOpt);
108 //_________________________________________________________________
109 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
111 // reconstruct clusters from raw data
112 TString recopt = GetRecoParam()->GetOptReco();
113 fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
114 fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree,recopt.Data());
117 //_____________________________________________________________________________
118 AliTrackleter* AliITSReconstructor::CreateMultFinder() const
120 // create the SPD trackeleter for mult. reconstruction
121 AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
122 multReco->SetHistOn(kFALSE);
123 multReco->SetDetTypeRec(fDetTypeRec);
127 //_____________________________________________________________________________
128 AliTracker* AliITSReconstructor::CreateTrackleter() const
130 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
131 if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
132 //Int_t trackerOpt = GetRecoParam()->GetTracker();
133 AliTracker* trackleter;
134 trackleter = new AliITSTrackleterSPDEff();
135 AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
136 // here set cuts (from RecoParam)
137 if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
138 if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
139 spdtrackleter->SetHistOn();
140 spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
141 spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
142 spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
143 spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
144 if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
145 spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
149 //_____________________________________________________________________________
150 AliTracker* AliITSReconstructor::CreateTracker() const
152 // create a ITS tracker
154 Int_t trackerOpt = GetRecoParam()->GetTracker();
157 tracker = new AliITStrackerMI(0);
158 AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
159 mit->SetDetTypeRec(fDetTypeRec);
161 else if (trackerOpt==2) {
162 tracker = new AliITStrackerV2(0);
165 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
166 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
167 sat->SetDetTypeRec(fDetTypeRec);
168 if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
169 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
170 if(GetRecoParam()->GetInwardFindingSA()){
171 sat->SetInwardFinding();
172 sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
174 sat->SetOutwardFinding();
175 sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
177 sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
184 //_____________________________________________________________________________
185 AliVertexer* AliITSReconstructor::CreateVertexer() const
187 // create a ITS vertexer
189 AliITSVertexer *vptr = NULL;
190 Int_t vtxOpt = GetRecoParam()->GetVertexer();
192 AliFatal("Option AliITSVertexerIons is no longer supported");
196 Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
197 GetRecoParam()->GetVertexerFastSmearY(),
198 GetRecoParam()->GetVertexerFastSmearZ()};
199 AliDebug(1,"AliITSVertexerFast has been selected");
200 vptr = new AliITSVertexerFast(smear);
203 AliDebug(1,"AliITSVertexerZ has been selected");
204 AliITSVertexerZ* vtxrz = new AliITSVertexerZ();
205 Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
206 if(pileupAlgo==3) vtxrz->SetSearchForPileup(kFALSE);
210 AliDebug(1,"AliITSVertexerCosmics has been selected");
211 vptr = new AliITSVertexerCosmics();
214 AliDebug(1,"Vertex is fixed in the position of the TDI\n");
215 vptr = new AliITSVertexerFixed("TDI");
218 AliDebug(1,"Vertex is fixed in the position of the TED\n");
219 vptr = new AliITSVertexerFixed("TED");
222 // by default an AliITSVertexer3D object is instatiated
223 AliITSVertexer3D* vtxr = new AliITSVertexer3D();
224 Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
225 Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
226 vtxr->SetWideFiducialRegion(dzw,drw);
227 Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
228 Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
229 vtxr->SetNarrowFiducialRegion(dzn,drn);
230 Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
231 Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
232 vtxr->SetDeltaPhiCuts(dphil,dphit);
233 Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
234 vtxr->SetDCACut(dcacut);
235 Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
236 vtxr->SetPileupAlgo(pileupAlgo);
237 UChar_t highmultAlgo=GetRecoParam()->GetSPDVertexerHighMultAlgo();
238 vtxr->SetHighMultAlgo(highmultAlgo);
239 AliDebug(1,Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
242 vptr->SetDetTypeRec(fDetTypeRec);
246 //_____________________________________________________________________________
247 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
248 AliESDEvent* /* esd */) const
250 // make PID, find V0s and cascade
251 /* Now done in AliESDpid
252 if(fItsPID!=0) fItsPID->MakePID(esd);
253 else AliError("!! cannot do the PID !!");