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477d6cee 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
477d6cee 15
16//_________________________________________________________________________
17//
18// Class for track selection and identification (not done now)
19// Tracks from the CTS are kept in the AOD.
20// Few histograms produced.
21//
22//-- Author: Gustavo Conesa (INFN-LNF)
23//_________________________________________________________________________
24
25
26// --- ROOT system ---
477d6cee 27#include "TParticle.h"
28#include "TH2F.h"
05d0d05d 29
477d6cee 30//---- AliRoot system ----
31#include "AliAnaChargedParticles.h"
32#include "AliCaloTrackReader.h"
33#include "AliAODPWG4Particle.h"
34#include "AliStack.h"
ff45398a 35#include "AliFiducialCut.h"
88f9563f 36#include "AliVTrack.h"
591cc579 37#include "AliAODMCParticle.h"
477d6cee 38
39ClassImp(AliAnaChargedParticles)
40
05d0d05d 41//__________________________________________________
477d6cee 42 AliAnaChargedParticles::AliAnaChargedParticles() :
745913ae 43 AliAnaCaloTrackCorrBaseClass(),
05d0d05d 44 fPdg(0),
45 fhNtracks(0), fhPt(0),
46 fhPhiNeg(0), fhEtaNeg(0),
47 fhPhiPos(0), fhEtaPos(0),
48 fhEtaPhiPos(0), fhEtaPhiNeg(0),
49 //MC
50 fhPtPion(0), fhPhiPion(0), fhEtaPion(0),
51 fhPtProton(0), fhPhiProton(0), fhEtaProton(0),
52 fhPtElectron(0),fhPhiElectron(0), fhEtaElectron(0),
53 fhPtKaon(0), fhPhiKaon(0), fhEtaKaon(0),
54 fhPtUnknown(0), fhPhiUnknown(0), fhEtaUnknown(0)
477d6cee 55{
56 //Default Ctor
57
58 //Initialize parameters
59 InitParameters();
477d6cee 60
477d6cee 61}
62
05d0d05d 63//_______________________________________________________
477d6cee 64TList * AliAnaChargedParticles::GetCreateOutputObjects()
65{
66 // Create histograms to be saved in output file and
67 // store them in fOutputContainer
68
69
70 TList * outputContainer = new TList() ;
71 outputContainer->SetName("ExampleHistos") ;
72
745913ae 73 Int_t nptbins = GetHistogramRanges()->GetHistoPtBins(); Int_t nphibins = GetHistogramRanges()->GetHistoPhiBins(); Int_t netabins = GetHistogramRanges()->GetHistoEtaBins();
74 Float_t ptmax = GetHistogramRanges()->GetHistoPtMax(); Float_t phimax = GetHistogramRanges()->GetHistoPhiMax(); Float_t etamax = GetHistogramRanges()->GetHistoEtaMax();
75 Float_t ptmin = GetHistogramRanges()->GetHistoPtMin(); Float_t phimin = GetHistogramRanges()->GetHistoPhiMin(); Float_t etamin = GetHistogramRanges()->GetHistoEtaMin();
5025c139 76
77 fhNtracks = new TH1F ("hNtracks","# of tracks", 1000,0,1000);
78 fhNtracks->SetXTitle("# of tracks");
79 outputContainer->Add(fhNtracks);
05d0d05d 80
81 fhPt = new TH1F ("hPt","p_T distribution", nptbins,ptmin,ptmax);
477d6cee 82 fhPt->SetXTitle("p_{T} (GeV/c)");
83 outputContainer->Add(fhPt);
84
05d0d05d 85 fhPhiNeg = new TH2F ("hPhiNegative","#phi of negative charges distribution",
86 nptbins,ptmin,ptmax, nphibins,phimin,phimax);
87 fhPhiNeg->SetYTitle("#phi (rad)");
88 fhPhiNeg->SetXTitle("p_{T} (GeV/c)");
89 outputContainer->Add(fhPhiNeg);
90
91 fhEtaNeg = new TH2F ("hEtaNegative","#eta of negative charges distribution",
92 nptbins,ptmin,ptmax, netabins,etamin,etamax);
93 fhEtaNeg->SetYTitle("#eta ");
94 fhEtaNeg->SetXTitle("p_{T} (GeV/c)");
95 outputContainer->Add(fhEtaNeg);
477d6cee 96
192689a4 97 fhPhiPos = new TH2F ("hPhiPositive","#phi of positive charges distribution",
05d0d05d 98 nptbins,ptmin,ptmax, nphibins,phimin,phimax);
99 fhPhiPos->SetYTitle("#phi (rad)");
100 fhPhiPos->SetXTitle("p_{T} (GeV/c)");
101 outputContainer->Add(fhPhiPos);
477d6cee 102
192689a4 103 fhEtaPos = new TH2F ("hEtaPositive","#eta of positive charges distribution",
05d0d05d 104 nptbins,ptmin,ptmax, netabins,etamin,etamax);
105 fhEtaPos->SetYTitle("#eta ");
106 fhEtaPos->SetXTitle("p_{T} (GeV/c)");
107 outputContainer->Add(fhEtaPos);
5025c139 108
192689a4 109 fhEtaPhiPos = new TH2F ("hEtaPhiPositive","pt/eta/phi of positive charge",netabins,etamin,etamax, nphibins,phimin,phimax);
05d0d05d 110 fhEtaPhiPos->SetXTitle("p_{T}^{h^{+}} (GeV/c)");
111 fhEtaPhiPos->SetYTitle("#eta ");
112 fhEtaPhiPos->SetZTitle("#phi (rad)");
113 outputContainer->Add(fhEtaPhiPos);
114
115 fhEtaPhiNeg = new TH2F ("hEtaPhiNegative","eta vs phi of negative charge",netabins,etamin,etamax, nphibins,phimin,phimax);
116 fhEtaPhiNeg->SetXTitle("p_{T}^{h^{-}} (GeV/c)");
117 fhEtaPhiNeg->SetYTitle("#eta ");
118 fhEtaPhiNeg->SetZTitle("#phi (rad)");
119 outputContainer->Add(fhEtaPhiNeg);
477d6cee 120
121 if(IsDataMC()){
122
a3aebfff 123 fhPtPion = new TH1F ("hPtMCPion","p_T distribution from #pi", nptbins,ptmin,ptmax);
477d6cee 124 fhPtPion->SetXTitle("p_{T} (GeV/c)");
125 outputContainer->Add(fhPtPion);
126
a3aebfff 127 fhPhiPion = new TH2F ("hPhiMCPion","#phi distribution from #pi",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
477d6cee 128 fhPhiPion->SetXTitle("#phi (rad)");
129 outputContainer->Add(fhPhiPion);
130
a3aebfff 131 fhEtaPion = new TH2F ("hEtaMCPion","#eta distribution from #pi",nptbins,ptmin,ptmax, netabins,etamin,etamax);
477d6cee 132 fhEtaPion->SetXTitle("#eta ");
133 outputContainer->Add(fhEtaPion);
134
a3aebfff 135 fhPtProton = new TH1F ("hPtMCProton","p_T distribution from proton", nptbins,ptmin,ptmax);
477d6cee 136 fhPtProton->SetXTitle("p_{T} (GeV/c)");
137 outputContainer->Add(fhPtProton);
138
a3aebfff 139 fhPhiProton = new TH2F ("hPhiMCProton","#phi distribution from proton",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
477d6cee 140 fhPhiProton->SetXTitle("#phi (rad)");
141 outputContainer->Add(fhPhiProton);
142
a3aebfff 143 fhEtaProton = new TH2F ("hEtaMCProton","#eta distribution from proton",nptbins,ptmin,ptmax, netabins,etamin,etamax);
477d6cee 144 fhEtaProton->SetXTitle("#eta ");
145 outputContainer->Add(fhEtaProton);
146
a3aebfff 147 fhPtKaon = new TH1F ("hPtMCKaon","p_T distribution from kaon", nptbins,ptmin,ptmax);
477d6cee 148 fhPtKaon->SetXTitle("p_{T} (GeV/c)");
149 outputContainer->Add(fhPtKaon);
150
a3aebfff 151 fhPhiKaon = new TH2F ("hPhiMCKaon","#phi distribution from kaon",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
477d6cee 152 fhPhiKaon->SetXTitle("#phi (rad)");
153 outputContainer->Add(fhPhiKaon);
154
a3aebfff 155 fhEtaKaon = new TH2F ("hEtaMCKaon","#eta distribution from kaon",nptbins,ptmin,ptmax, netabins,etamin,etamax);
477d6cee 156 fhEtaKaon->SetXTitle("#eta ");
157 outputContainer->Add(fhEtaKaon);
158
a3aebfff 159 fhPtElectron = new TH1F ("hPtMCElectron","p_T distribution from electron", nptbins,ptmin,ptmax);
477d6cee 160 fhPtElectron->SetXTitle("p_{T} (GeV/c)");
161 outputContainer->Add(fhPtElectron);
162
a3aebfff 163 fhPhiElectron = new TH2F ("hPhiMCElectron","#phi distribution from electron",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
477d6cee 164 fhPhiElectron->SetXTitle("#phi (rad)");
165 outputContainer->Add(fhPhiElectron);
166
a3aebfff 167 fhEtaElectron = new TH2F ("hEtaMCElectron","#eta distribution from electron",nptbins,ptmin,ptmax, netabins,etamin,etamax);
477d6cee 168 fhEtaElectron->SetXTitle("#eta ");
169 outputContainer->Add(fhEtaElectron);
170
a3aebfff 171 fhPtUnknown = new TH1F ("hPtMCUnknown","p_T distribution from unknown", nptbins,ptmin,ptmax);
477d6cee 172 fhPtUnknown->SetXTitle("p_{T} (GeV/c)");
173 outputContainer->Add(fhPtUnknown);
174
a3aebfff 175 fhPhiUnknown = new TH2F ("hPhiMCUnknown","#phi distribution from unknown",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
477d6cee 176 fhPhiUnknown->SetXTitle("#phi (rad)");
177 outputContainer->Add(fhPhiUnknown);
178
a3aebfff 179 fhEtaUnknown = new TH2F ("hEtaMCUnknown","#eta distribution from unknown",nptbins,ptmin,ptmax, netabins,etamin,etamax);
477d6cee 180 fhEtaUnknown->SetXTitle("#eta ");
181 outputContainer->Add(fhEtaUnknown);
182
183 }
a3aebfff 184
477d6cee 185 return outputContainer;
a3aebfff 186
477d6cee 187}
188
05d0d05d 189//___________________________________________
477d6cee 190void AliAnaChargedParticles::InitParameters()
191{
192 //Initialize the parameters of the analysis.
193 SetOutputAODClassName("AliAODPWG4Particle");
a3aebfff 194 SetOutputAODName("PWG4Particle");
195
196 AddToHistogramsName("AnaCharged_");
197
477d6cee 198 fPdg = -1; //Select all tracks
199
200}
201
05d0d05d 202//____________________________________________________________
477d6cee 203void AliAnaChargedParticles::Print(const Option_t * opt) const
204{
205 //Print some relevant parameters set for the analysis
206 if(! opt)
207 return;
208
a3aebfff 209 printf("**** Print %s %s ****\n", GetName(), GetTitle() ) ;
745913ae 210 AliAnaCaloTrackCorrBaseClass::Print(" ");
a3aebfff 211
477d6cee 212 printf("Min Pt = %3.2f\n", GetMinPt());
213 printf("Max Pt = %3.2f\n", GetMaxPt());
214 printf("Select clusters with pdg %d \n",fPdg);
215
216}
217
05d0d05d 218//_________________________________
477d6cee 219void AliAnaChargedParticles::Init()
220{
221 //Init
222 //Do some checks
223 if(!GetReader()->IsCTSSwitchedOn()){
7cd4e982 224 printf("AliAnaChargedParticles::Init() - STOP!: You want to use CTS tracks in analysis but not read!! \n!!Check the configuration file!!\n");
477d6cee 225 abort();
226 }
227
228}
229
05d0d05d 230//_________________________________________________
477d6cee 231void AliAnaChargedParticles::MakeAnalysisFillAOD()
232{
233 //Do analysis and fill aods
be518ab0 234 if(!GetCTSTracks() || GetCTSTracks()->GetEntriesFast() == 0) return ;
192689a4 235
be518ab0 236 Int_t ntracks = GetCTSTracks()->GetEntriesFast();
2244659d 237 Double_t vert[3] = {0,0,0}; //vertex ;
192689a4 238
477d6cee 239 //Some prints
240 if(GetDebug() > 0)
a3aebfff 241 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - In CTS aod entries %d\n", ntracks);
477d6cee 242
243 //Fill AODParticle with CTS aods
244 TVector3 p3;
5025c139 245 Int_t evtIndex = 0;
477d6cee 246 for(Int_t i = 0; i < ntracks; i++){
247
88f9563f 248 AliVTrack * track = (AliVTrack*) (GetCTSTracks()->At(i));
477d6cee 249
250 //Fill AODParticle after some selection
251 Double_t mom[3] = {track->Px(),track->Py(),track->Pz()};
252 p3.SetXYZ(mom[0],mom[1],mom[2]);
253
192689a4 254 Bool_t in = GetFiducialCut()->IsInFiducialCut(mom,"CTS") ;
255
05d0d05d 256 if(GetDebug() > 1)
192689a4 257 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - Track pt %2.2f, phi %2.2f, eta %2.2f in fiducial cut %d\n",p3.Pt(), p3.Phi(), p3.Eta(),in);
258
259 //Acceptance selection
260 if(IsFiducialCutOn() && ! in ) continue ;
261
262 // Momentum selection
263 if(p3.Pt() < GetMinPt() || p3.Pt() > GetMaxPt()) continue;
264
265 //Keep only particles identified with fPdg
266 //Selection not done for the moment
267 //Should be done here.
268
269 // Mixed event
270 if (GetMixedEvent()){
271 evtIndex = GetMixedEvent()->EventIndex(track->GetID()) ;
272 }
273 GetVertex(vert,evtIndex);
274 if(TMath::Abs(vert[2])> GetZvertexCut()) return;
275
276 AliAODPWG4Particle tr = AliAODPWG4Particle(mom[0],mom[1],mom[2],0);
277 tr.SetDetector("CTS");
278 tr.SetLabel(track->GetLabel());
279 tr.SetTrackLabel(track->GetID(),-1);
280 tr.SetChargedBit(track->Charge()>0);
7cd4e982 281
192689a4 282 AddAODParticle(tr);
283
477d6cee 284 }//loop
285
286 if(GetDebug() > 0)
a3aebfff 287 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - Final aod branch entries %d\n", GetOutputAODBranch()->GetEntriesFast());
477d6cee 288}
289
290//__________________________________________________________________
291void AliAnaChargedParticles::MakeAnalysisFillHistograms()
292{
293 //Do analysis and fill histograms
294
295 //Loop on stored AODParticles
296 Int_t naod = GetOutputAODBranch()->GetEntriesFast();
05d0d05d 297
2244659d 298 fhNtracks->Fill(GetReader()->GetTrackMultiplicity()) ;
05d0d05d 299
300 if(GetDebug() > 0)
301 printf("AliAnaChargedParticles::MakeAnalysisFillHistograms() - aod branch entries %d\n", naod);
302
477d6cee 303 for(Int_t iaod = 0; iaod < naod ; iaod++){
304 AliAODPWG4Particle* tr = (AliAODPWG4Particle*) (GetOutputAODBranch()->At(iaod));
2244659d 305
477d6cee 306 fhPt->Fill(tr->Pt());
05d0d05d 307
308 if(tr->GetChargedBit()){
309 fhPhiPos ->Fill(tr->Pt(), tr->Phi());
b2fbc116 310 fhEtaPos ->Fill(tr->Pt(), tr->Eta());
05d0d05d 311 fhEtaPhiPos->Fill(tr->Eta(),tr->Phi());
312 }
313 else{
b2fbc116 314 fhPhiNeg ->Fill(tr->Pt(), tr->Phi());
05d0d05d 315 fhEtaNeg ->Fill(tr->Pt(), tr->Eta());
316 fhEtaPhiNeg->Fill(tr->Eta(),tr->Phi());
317 }
477d6cee 318
319 if(IsDataMC()){
320 //Play with the MC stack if available
5025c139 321 Int_t mompdg = -1;
f6661bbc 322 Int_t label = TMath::Abs(tr->GetLabel());
5025c139 323 if(GetReader()->ReadStack()){
324 TParticle * mom = GetMCStack()->Particle(label);
325 mompdg =TMath::Abs(mom->GetPdgCode());
591cc579 326 }
5025c139 327 else if(GetReader()->ReadAODMCParticles()){
328 AliAODMCParticle * aodmom = 0;
329 //Get the list of MC particles
330 aodmom = (AliAODMCParticle*) (GetReader()->GetAODMCParticles(tr->GetInputFileIndex()))->At(label);
331 mompdg =TMath::Abs(aodmom->GetPdgCode());
332 }
333
334 if(mompdg==211){
05d0d05d 335 fhPtPion ->Fill(tr->Pt());
5025c139 336 fhPhiPion->Fill(tr->Pt(), tr->Phi());
337 fhEtaPion->Fill(tr->Pt(), tr->Eta());
477d6cee 338 }
339 else if(mompdg==2212){
05d0d05d 340 fhPtProton ->Fill(tr->Pt());
5025c139 341 fhPhiProton->Fill(tr->Pt(), tr->Phi());
342 fhEtaProton->Fill(tr->Pt(), tr->Eta());
477d6cee 343 }
344 else if(mompdg==321){
05d0d05d 345 fhPtKaon ->Fill(tr->Pt());
5025c139 346 fhPhiKaon->Fill(tr->Pt(), tr->Phi());
347 fhEtaKaon->Fill(tr->Pt(), tr->Eta());
477d6cee 348 }
349 else if(mompdg==11){
05d0d05d 350 fhPtElectron ->Fill(tr->Pt());
5025c139 351 fhPhiElectron->Fill(tr->Pt(), tr->Phi());
352 fhEtaElectron->Fill(tr->Pt(), tr->Eta());
477d6cee 353 }
354 else {
5025c139 355 //printf("unknown pdg %d\n",mompdg);
05d0d05d 356 fhPtUnknown ->Fill(tr->Pt());
5025c139 357 fhPhiUnknown->Fill(tr->Pt(), tr->Phi());
358 fhEtaUnknown->Fill(tr->Pt(), tr->Eta());
477d6cee 359 }
05d0d05d 360
477d6cee 361 }//Work with stack also
f6661bbc 362
477d6cee 363 }// aod branch loop
364
365}