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 "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 AliITSRecoParam *AliITSReconstructor::fgkRecoParam =0; // reconstruction parameters
50 //___________________________________________________________________________
51 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
54 // Default constructor
56 AliError("The Reconstruction parameters nonitialized - Used default one");
57 fgkRecoParam = AliITSRecoParam::GetHighFluxParam();
60 //___________________________________________________________________________
61 AliITSReconstructor::~AliITSReconstructor(){
64 if(fgkRecoParam) delete fgkRecoParam;
66 //______________________________________________________________________
67 AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob),
73 //______________________________________________________________________
74 AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& ob ){
75 // Assignment operator
76 this->~AliITSReconstructor();
77 new(this) AliITSReconstructor(ob);
80 //______________________________________________________________________
81 void AliITSReconstructor::Init(AliRunLoader *runLoader) const{
82 // Initalize this constructor bet getting/creating the objects
83 // nesseary for a proper ITS reconstruction.
85 // AliRunLoader *runLoader Pointer to the run loader to allow
86 // the getting of files/folders data
87 // needed to do reconstruction
93 AliITSInitGeometry initgeom;
94 AliITSgeom *geom = initgeom.CreateAliITSgeom();
95 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
96 AliITSLoader* loader = static_cast<AliITSLoader*>
97 (runLoader->GetLoader("ITSLoader"));
99 Error("Init", "ITS loader not found");
102 loader->SetITSgeom(geom);
105 //_____________________________________________________________________________
106 void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader) const
108 // reconstruct clusters
111 AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader"));
113 Error("Reconstruct", "ITS loader not found");
116 AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader);
119 loader->LoadRecPoints("recreate");
120 loader->LoadDigits("read");
121 runLoader->LoadKinematics();
122 TString option = GetOption();
123 Bool_t clusfinder=kTRUE; // Default: V2 cluster finder
124 if(option.Contains("OrigCF"))clusfinder=kFALSE;
126 Int_t nEvents = runLoader->GetNumberOfEvents();
128 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
129 runLoader->GetEvent(iEvent);
130 if(loader->TreeR()==0x0) loader->MakeTree("R");
131 rec->MakeBranch("R");
132 rec->SetTreeAddress();
133 rec->DigitsToRecPoints(iEvent,0,"All",clusfinder);
136 loader->UnloadRecPoints();
137 loader->UnloadDigits();
138 runLoader->UnloadKinematics();
141 //_________________________________________________________________
142 void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader,
143 AliRawReader* rawReader) const
145 // reconstruct clusters
148 AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader"));
150 Error("Reconstruct", "ITS loader not found");
154 AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader);
156 rec->SetDefaultClusterFindersV2(kTRUE);
158 loader->LoadRecPoints("recreate");
162 while(rawReader->NextEvent()) {
163 runLoader->GetEvent(iEvent++);
164 if(loader->TreeR()==0x0) loader->MakeTree("R");
165 rec->DigitsToRecPoints(rawReader);
168 loader->UnloadRecPoints();
171 //_____________________________________________________________________________
172 AliTracker* AliITSReconstructor::CreateTracker(AliRunLoader* runLoader)const
174 // create a ITS tracker
177 TString selectedTracker = GetOption();
179 if (selectedTracker.Contains("MI")) {
180 tracker = new AliITStrackerMI(0);
182 else if (selectedTracker.Contains("V2")) {
183 tracker = new AliITStrackerV2(0);
186 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
187 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
188 if(selectedTracker.Contains("onlyITS"))sat->SetSAFlag(kTRUE);
189 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
190 if(selectedTracker.Contains("cosmics")||selectedTracker.Contains("COSMICS"))
191 sat->SetOuterStartLayer(AliITSgeomTGeo::GetNLayers()-2);
194 TString selectedPIDmethod = GetOption();
195 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
197 Error("CreateTracker", "ITS loader not found");
199 if(selectedPIDmethod.Contains("LandauFitPID")){
200 loader->AdoptITSpid(new AliITSpidESD2((AliITStrackerMI*)tracker,loader));
203 Double_t parITS[] = {0.15, 10.}; //PH positions of the MIP peak
204 loader->AdoptITSpid(new AliITSpidESD1(parITS));
210 //_____________________________________________________________________________
211 AliVertexer* AliITSReconstructor::CreateVertexer(AliRunLoader* /*runLoader*/) const
213 // create a ITS vertexer
215 TString selectedVertexer = GetOption();
216 if(selectedVertexer.Contains("ions") || selectedVertexer.Contains("IONS")){
217 Info("CreateVertexer","a AliITSVertexerIons object has been selected\n");
218 return new AliITSVertexerIons("null");
220 if(selectedVertexer.Contains("smear") || selectedVertexer.Contains("SMEAR")){
221 Double_t smear[3]={0.005,0.005,0.01};
222 Info("CreateVertexer","a AliITSVertexerFast object has been selected\n");
223 return new AliITSVertexerFast(smear);
225 if(selectedVertexer.Contains("3d") || selectedVertexer.Contains("3D")){
226 Info("CreateVertexer","a AliITSVertexer3D object has been selected\n");
227 return new AliITSVertexer3D("null");
229 if(selectedVertexer.Contains("cosmics") || selectedVertexer.Contains("COSMICS")){
230 Info("CreateVertexer","a AliITSVertexerCosmics object has been selected\n");
231 return new AliITSVertexerCosmics();
233 // by default an AliITSVertexerZ object is instatiated
234 Info("CreateVertexer","a AliITSVertexerZ object has been selected\n");
235 return new AliITSVertexerZ("null");
238 //_____________________________________________________________________________
239 void AliITSReconstructor::FillESD(AliRunLoader* runLoader,
240 AliESDEvent* esd) const
242 // make PID, find V0s and cascade
243 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
244 AliITSpidESD *pidESD = 0;
245 TString selectedPIDmethod = GetOption();
246 if(selectedPIDmethod.Contains("LandauFitPID")){
247 Info("FillESD","ITS LandauFitPID option has been selected\n");
248 pidESD=loader->GetITSpid();
251 Info("FillESD","ITS default PID\n");
252 pidESD=loader->GetITSpid();
255 pidESD->MakePID(esd);
258 Error("FillESD","!! cannot do the PID !!\n");
263 //_____________________________________________________________________________
264 AliITSgeom* AliITSReconstructor::GetITSgeom(AliRunLoader* runLoader) const
266 // get the ITS geometry
268 if (!runLoader->GetAliRun()) runLoader->LoadgAlice();
269 if (!runLoader->GetAliRun()) {
270 Error("GetITSgeom", "couldn't get AliRun object");
273 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
274 AliITSgeom* geom = (AliITSgeom*)loader->GetITSgeom();
276 Error("GetITSgeom","no ITS geometry available");