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 "AliITStrackerSA.h"
33 #include "AliITSVertexerIons.h"
34 #include "AliITSVertexerFast.h"
35 #include "AliITSVertexerPPZ.h"
36 #include "AliITSVertexerZ.h"
38 #include "AliITSpidESD.h"
39 #include "AliITSpidESD1.h"
40 #include "AliITSpidESD2.h"
41 #include "AliITSInitGeometry.h"
43 ClassImp(AliITSReconstructor)
45 //___________________________________________________________________________
46 AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
49 // Default constructor
51 //___________________________________________________________________________
52 AliITSReconstructor::~AliITSReconstructor(){
56 //______________________________________________________________________
57 AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob),
63 //______________________________________________________________________
64 AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& ob ){
65 // Assignment operator
66 this->~AliITSReconstructor();
67 new(this) AliITSReconstructor(ob);
70 //______________________________________________________________________
71 void AliITSReconstructor::Init(AliRunLoader *runLoader) const{
72 // Initalize this constructor bet getting/creating the objects
73 // nesseary for a proper ITS reconstruction.
75 // AliRunLoader *runLoader Pointer to the run loader to allow
76 // the getting of files/folders data
77 // needed to do reconstruction
83 AliITSInitGeometry initgeom;
84 AliITSgeom *geom = initgeom.CreateAliITSgeom();
85 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
86 AliITSLoader* loader = static_cast<AliITSLoader*>
87 (runLoader->GetLoader("ITSLoader"));
89 Error("Init", "ITS loader not found");
92 loader->SetITSgeom(geom);
95 //_____________________________________________________________________________
96 void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader) const
98 // reconstruct clusters
101 AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader"));
103 Error("Reconstruct", "ITS loader not found");
106 AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader);
109 loader->LoadRecPoints("recreate");
110 loader->LoadDigits("read");
111 runLoader->LoadKinematics();
112 TString option = GetOption();
113 Bool_t clusfinder=kTRUE; // Default: V2 cluster finder
114 if(option.Contains("OrigCF"))clusfinder=kFALSE;
116 Int_t nEvents = runLoader->GetNumberOfEvents();
118 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
119 runLoader->GetEvent(iEvent);
120 if(loader->TreeR()==0x0) loader->MakeTree("R");
121 rec->MakeBranch("R");
122 rec->SetTreeAddress();
123 rec->DigitsToRecPoints(iEvent,0,"All",clusfinder);
126 loader->UnloadRecPoints();
127 loader->UnloadDigits();
128 runLoader->UnloadKinematics();
131 //_________________________________________________________________
132 void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader,
133 AliRawReader* rawReader) const
135 // reconstruct clusters
138 AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader"));
140 Error("Reconstruct", "ITS loader not found");
144 AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader);
146 rec->SetDefaultClusterFindersV2(kTRUE);
148 loader->LoadRecPoints("recreate");
152 while(rawReader->NextEvent()) {
153 runLoader->GetEvent(iEvent++);
154 if(loader->TreeR()==0x0) loader->MakeTree("R");
155 rec->DigitsToRecPoints(rawReader);
158 loader->UnloadRecPoints();
161 //_____________________________________________________________________________
162 AliTracker* AliITSReconstructor::CreateTracker(AliRunLoader* runLoader)const
164 // create a ITS tracker
167 TString selectedTracker = GetOption();
169 if (selectedTracker.Contains("MI")) {
170 tracker = new AliITStrackerMI(0);
173 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
174 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
175 if(selectedTracker.Contains("onlyITS"))sat->SetSAFlag(kTRUE);
176 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
179 TString selectedPIDmethod = GetOption();
180 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
182 Error("CreateTracker", "ITS loader not found");
184 if(selectedPIDmethod.Contains("LandauFitPID")){
185 loader->AdoptITSpid(new AliITSpidESD2((AliITStrackerMI*)tracker,loader));
188 Double_t parITS[] = {34., 0.15, 10.};
189 loader->AdoptITSpid(new AliITSpidESD1(parITS));
195 //_____________________________________________________________________________
196 AliVertexer* AliITSReconstructor::CreateVertexer(AliRunLoader* /*runLoader*/) const
198 // create a ITS vertexer
200 TString selectedVertexer = GetOption();
201 if(selectedVertexer.Contains("ions") || selectedVertexer.Contains("IONS")){
202 Info("CreateVertexer","a AliITSVertexerIons object has been selected\n");
203 return new AliITSVertexerIons("null");
205 if(selectedVertexer.Contains("smear") || selectedVertexer.Contains("SMEAR")){
206 Double_t smear[3]={0.005,0.005,0.01};
207 Info("CreateVertexer","a AliITSVertexerFast object has been selected\n");
208 return new AliITSVertexerFast(smear);
210 if(selectedVertexer.Contains("ppz") || selectedVertexer.Contains("PPZ")){
211 Info("CreateVertexer","a AliITSVertexerPPZ object has been selected\n");
212 return new AliITSVertexerPPZ("null");
214 // by default an AliITSVertexerZ object is instatiated
215 Info("CreateVertexer","a AliITSVertexerZ object has been selected\n");
216 return new AliITSVertexerZ("null");
219 //_____________________________________________________________________________
220 void AliITSReconstructor::FillESD(AliRunLoader* runLoader,
223 // make PID, find V0s and cascade
224 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
225 AliITSpidESD *pidESD = 0;
226 TString selectedPIDmethod = GetOption();
227 if(selectedPIDmethod.Contains("LandauFitPID")){
228 Info("FillESD","ITS LandauFitPID option has been selected\n");
229 pidESD=loader->GetITSpid();
232 Info("FillESD","ITS default PID\n");
233 pidESD=loader->GetITSpid();
236 pidESD->MakePID(esd);
239 Error("FillESD","!! cannot do the PID !!\n");
244 //_____________________________________________________________________________
245 AliITSgeom* AliITSReconstructor::GetITSgeom(AliRunLoader* runLoader) const
247 // get the ITS geometry
249 if (!runLoader->GetAliRun()) runLoader->LoadgAlice();
250 if (!runLoader->GetAliRun()) {
251 Error("GetITSgeom", "couldn't get AliRun object");
254 AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
255 AliITSgeom* geom = (AliITSgeom*)loader->GetITSgeom();
257 Error("GetITSgeom","no ITS geometry available");