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 "AliITSVertexerIons.h"
36 #include "AliITSVertexerFast.h"
37 #include "AliITSVertexerFixed.h"
38 #include "AliITSVertexer3D.h"
39 #include "AliITSVertexerZ.h"
40 #include "AliITSVertexerCosmics.h"
41 #include "AliITSInitGeometry.h"
42 #include "AliITSTrackleterSPDEff.h"
45 ClassImp(AliITSReconstructor)
47 //___________________________________________________________________________
48 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
51 // Default constructor
53 //___________________________________________________________________________
54 AliITSReconstructor::~AliITSReconstructor(){
56 if(fDetTypeRec) delete fDetTypeRec;
58 //____________________________________________________________________________
59 void AliITSReconstructor::GetPidSettings(AliESDpid *ESDpid) {
61 // pass PID settings from AliITSRecoParam to AliESDpid
63 Int_t pidOpt = GetRecoParam()->GetPID();
66 AliDebug(1,"ITS LandauFitPID option has been selected\n");
67 ESDpid->SetITSPIDmethod(AliESDpid::kITSLikelihood);
70 AliDebug(1,"ITS default PID\n");
71 ESDpid->SetITSPIDmethod(AliESDpid::kITSTruncMean);
74 //______________________________________________________________________
75 void AliITSReconstructor::Init() {
76 // Initalize this constructor bet getting/creating the objects
77 // nesseary for a proper ITS reconstruction.
85 AliITSInitGeometry initgeom;
86 AliITSgeom *geom = initgeom.CreateAliITSgeom();
87 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
89 fDetTypeRec = new AliITSDetTypeRec();
90 fDetTypeRec->SetITSgeom(geom);
91 fDetTypeRec->SetDefaults();
96 //_____________________________________________________________________________
97 void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
99 // reconstruct clusters
101 Int_t cluFindOpt = GetRecoParam()->GetClusterFinder();
103 fDetTypeRec->SetTreeAddressD(digitsTree);
104 fDetTypeRec->MakeBranch(clustersTree,"R");
105 fDetTypeRec->SetTreeAddressR(clustersTree);
106 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,"All",cluFindOpt);
109 //_________________________________________________________________
110 void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
112 // reconstruct clusters from raw data
114 fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
115 fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree);
117 //_____________________________________________________________________________
118 AliTracker* AliITSReconstructor::CreateTrackleter() const
120 // create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
121 if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
122 //Int_t trackerOpt = GetRecoParam()->GetTracker();
123 AliTracker* trackleter;
124 trackleter = new AliITSTrackleterSPDEff();
125 AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
126 // here set cuts (from RecoParam)
127 if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
128 if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
129 spdtrackleter->SetHistOn();
130 spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
131 spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
132 spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
133 spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
134 if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
135 spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
139 //_____________________________________________________________________________
140 AliTracker* AliITSReconstructor::CreateTracker() const
142 // create a ITS tracker
144 Int_t trackerOpt = GetRecoParam()->GetTracker();
147 tracker = new AliITStrackerMI(0);
148 AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
149 mit->SetDetTypeRec(fDetTypeRec);
151 else if (trackerOpt==2) {
152 tracker = new AliITStrackerV2(0);
155 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
156 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
157 sat->SetDetTypeRec(fDetTypeRec);
158 if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
159 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
160 if(GetRecoParam()->GetInwardFindingSA()){
161 sat->SetInwardFinding();
162 sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
164 sat->SetOutwardFinding();
165 sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
167 sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
174 //_____________________________________________________________________________
175 AliVertexer* AliITSReconstructor::CreateVertexer() const
177 // create a ITS vertexer
179 AliITSVertexer *vptr;
180 Int_t vtxOpt = GetRecoParam()->GetVertexer();
182 AliDebug(1,"AliITSVertexerIons has been selected");
183 vptr = new AliITSVertexerIons();
186 Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
187 GetRecoParam()->GetVertexerFastSmearY(),
188 GetRecoParam()->GetVertexerFastSmearZ()};
189 AliDebug(1,"AliITSVertexerFast has been selected");
190 vptr = new AliITSVertexerFast(smear);
193 AliDebug(1,"AliITSVertexerZ has been selected");
194 vptr = new AliITSVertexerZ();
197 AliDebug(1,"AliITSVertexerCosmics has been selected");
198 vptr = new AliITSVertexerCosmics();
201 AliDebug(1,"Vertex is fixed in the position of the TDI\n");
202 vptr = new AliITSVertexerFixed("TDI");
205 AliDebug(1,"Vertex is fixed in the position of the TED\n");
206 vptr = new AliITSVertexerFixed("TED");
209 // by default an AliITSVertexer3D object is instatiated
210 AliITSVertexer3D* vtxr = new AliITSVertexer3D();
211 Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
212 Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
213 vtxr->SetWideFiducialRegion(dzw,drw);
214 Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
215 Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
216 vtxr->SetNarrowFiducialRegion(dzn,drn);
217 Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
218 Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
219 vtxr->SetDeltaPhiCuts(dphil,dphit);
220 Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
221 vtxr->SetDCACut(dcacut);
222 Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
223 vtxr->SetPileupAlgo(pileupAlgo);
224 AliDebug(1,Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
227 vptr->SetDetTypeRec(fDetTypeRec);
231 //_____________________________________________________________________________
232 void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
233 AliESDEvent* /* esd */) const
235 // make PID, find V0s and cascade
236 /* Now done in AliESDpid
237 if(fItsPID!=0) fItsPID->MakePID(esd);
238 else AliError("!! cannot do the PID !!");