1 //====================================================================
3 // Base class for classes that calculate the multiplicity in the
4 // central region event-by-event
10 // - AliAODCentralMult
15 #include "AliCentralMultiplicityTask.h"
16 #include "AliForwardCorrectionManager.h"
17 #include "AliForwardUtil.h"
19 #include "AliAODHandler.h"
20 #include "AliInputEventHandler.h"
21 #include "AliESDInputHandler.h"
22 #include "AliAnalysisManager.h"
23 #include "AliESDEvent.h"
24 #include "AliMultiplicity.h"
25 #include "AliFMDEventInspector.h"
32 //====================================================================
33 AliCentralMultiplicityTask::AliCentralMultiplicityTask(const char* name)
34 : AliAnalysisTaskSE(name),
41 fFirstEventSeen(false)
46 DefineOutput(1, TList::Class());
48 "ESD:AliESDRun.,AliESDHeader.,AliMultiplicity.,"
49 "SPDVertex.,PrimaryVertex.";
51 //____________________________________________________________________
52 AliCentralMultiplicityTask::AliCentralMultiplicityTask()
53 : AliAnalysisTaskSE(),
60 fFirstEventSeen(false)
66 //____________________________________________________________________
67 AliCentralMultiplicityTask::AliCentralMultiplicityTask(const AliCentralMultiplicityTask& o)
68 : AliAnalysisTaskSE(o),
71 fAODCentral(o.fAODCentral),
73 fUseSecondary(o.fUseSecondary),
74 fUseAcceptance(o.fUseAcceptance),
75 fFirstEventSeen(o.fFirstEventSeen)
81 //____________________________________________________________________
82 AliCentralMultiplicityTask&
83 AliCentralMultiplicityTask::operator=(const AliCentralMultiplicityTask& o)
86 // Assignment operator
90 fAODCentral = o.fAODCentral;
91 fManager = o.fManager;
92 fUseSecondary = o.fUseSecondary;
93 fUseAcceptance = o.fUseAcceptance;
94 fFirstEventSeen = o.fFirstEventSeen;
97 //____________________________________________________________________
98 void AliCentralMultiplicityTask::UserCreateOutputObjects()
101 // Create output objects
105 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
107 dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler());
108 if (!ah) AliFatal("No AOD output handler set in analysis manager");
111 TObject* obj = &fAODCentral;
112 ah->AddBranch("AliAODCentralMult", &obj);
119 //____________________________________________________________________
120 void AliCentralMultiplicityTask::UserExec(Option_t* /*option*/)
123 // Process each event
128 fAODCentral.Clear("");
130 AliESDInputHandler* eventHandler =
131 dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()
132 ->GetInputEventHandler());
134 AliWarning("No inputhandler found for this event!");
137 AliESDEvent* esd = eventHandler->GetEvent();
139 if(!GetManager().IsInit() && !fFirstEventSeen) {
140 AliFMDEventInspector inspector;
141 inspector.ReadRunDetails(esd);
142 GetManager().Init(inspector.GetCollisionSystem(),
143 inspector.GetEnergy(),
144 inspector.GetField());
146 AliInfo("Manager of corrections in AliCentralMultiplicityTask init");
147 fFirstEventSeen = kTRUE;
150 //Selecting only events with |valid vertex| < 10 cm
151 const AliESDVertex* vertex = esd->GetPrimaryVertexSPD();
153 if(!(vertex->GetStatus())) return;
154 if(vertex->GetNContributors() <= 0) return ;
155 if(vertex->GetZRes() > 0.1 ) return;
156 Double_t vertexXYZ[3]={0,0,0};
157 vertex->GetXYZ(vertexXYZ);
158 if(TMath::Abs(vertexXYZ[2]) > 10) return;
161 Double_t vertexBinDouble = (vertexXYZ[2] + 10) / delta;
162 //HHD: The vtxbins are 1-10, not 0-9
163 Int_t vtxbin = Int_t(vertexBinDouble + 1) ;
165 // Make sure AOD is filled
166 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
168 dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler());
170 AliFatal("No AOD output handler set in analysis manager");
172 ah->SetFillAOD(kTRUE);
176 TH2D *aodHist = &(fAODCentral.GetHistogram());
178 const AliMultiplicity* spdmult = esd->GetMultiplicity();
179 //Filling clusters in layer 1 used for tracklets...
180 for(Int_t j = 0; j< spdmult->GetNumberOfTracklets();j++)
181 aodHist->Fill(spdmult->GetEta(j),spdmult->GetPhi(j));
183 //...and then the unused ones in layer 1
184 for(Int_t j = 0; j< spdmult->GetNumberOfSingleClusters();j++)
185 aodHist->Fill(-TMath::Log(TMath::Tan(spdmult->GetThetaSingle(j)/2.)),
186 spdmult->GetPhiSingle(j));
190 TH1D* hAcceptance = fManager.GetAcceptanceCorrection(vtxbin);
191 TH2D* hSecMap = fManager.GetSecMapCorrection(vtxbin);
193 if (!hSecMap) AliFatal("No secondary map!");
194 if (!hAcceptance) AliFatal("No acceptance!");
196 if (fUseSecondary && hSecMap) aodHist->Divide(hSecMap);
198 for(Int_t nx = 1; nx <= aodHist->GetNbinsX(); nx++) {
199 Float_t accCor = hAcceptance->GetBinContent(nx);
200 Float_t accErr = hAcceptance->GetBinError(nx);
202 Bool_t etabinSeen = kFALSE;
203 for(Int_t ny = 1; ny <= aodHist->GetNbinsY(); ny++) {
204 // Get currrent value
205 Float_t aodValue = aodHist->GetBinContent(nx,ny);
206 Float_t aodErr = aodHist->GetBinError(nx,ny);
210 if(hSecMap) secCor = hSecMap->GetBinContent(nx,ny);
211 if (secCor > 0.5) etabinSeen = kTRUE;
212 if (aodValue < 0.000001) { aodHist->SetBinContent(nx,ny, 0); continue; }
214 if (!fUseAcceptance) continue;
216 // Acceptance correction
217 if (accCor < 0.000001) accCor = 1;
218 Float_t aodNew = aodValue / accCor ;
219 Float_t error = aodNew*TMath::Sqrt(TMath::Power(aodErr/aodValue,2) +
220 TMath::Power(accErr/accCor,2) );
221 aodHist->SetBinContent(nx,ny, aodNew);
223 aodHist->SetBinError(nx,ny,error);
224 aodHist->SetBinError(nx,ny,aodErr);
227 //Filling underflow bin if we eta bin is in range
228 if(etabinSeen) aodHist->SetBinContent(nx,0, 1.);
233 //____________________________________________________________________
234 void AliCentralMultiplicityTask::Terminate(Option_t* /*option*/)
243 //____________________________________________________________________
245 AliCentralMultiplicityTask::Print(Option_t* /*option*/) const
254 //====================================================================
255 AliCentralMultiplicityTask::Manager::Manager() :
256 fAcceptancePath("$ALICE_ROOT/PWG2/FORWARD/corrections/CentralAcceptance"),
257 fSecMapPath("$ALICE_ROOT/PWG2/FORWARD/corrections/CentralSecMap"),
260 fAcceptanceName("centralacceptance"),
261 fSecMapName("centralsecmap"),
268 //____________________________________________________________________
269 AliCentralMultiplicityTask::Manager::Manager(const Manager& o)
270 :fAcceptancePath(o.fAcceptancePath),
271 fSecMapPath(o.fSecMapPath),
272 fAcceptance(o.fAcceptance),
274 fAcceptanceName(o.fAcceptanceName),
275 fSecMapName(o.fSecMapName),
282 //____________________________________________________________________
283 AliCentralMultiplicityTask::Manager&
284 AliCentralMultiplicityTask::Manager::operator=(const Manager& o)
287 // Assignment operator
289 fAcceptancePath = o.fAcceptancePath;
290 fSecMapPath = o.fSecMapPath;
291 fAcceptance = o.fAcceptance;
293 fAcceptanceName = o.fAcceptanceName;
294 fSecMapName = o.fSecMapName;
299 //____________________________________________________________________
301 AliCentralMultiplicityTask::Manager::GetFullFileName(UShort_t what,
307 // Get full path name to object file
311 // sys Collision system
312 // sNN Center of mass energy
313 // field Magnetic field
319 what == 0 ? GetSecMapPath() : GetAcceptancePath(),
320 GetFileName(what, sys, sNN, field));
323 //____________________________________________________________________
325 AliCentralMultiplicityTask::Manager::GetFileName(UShort_t what ,
331 // Get the full path name
335 // sys Collision system
336 // sNN Center of mass energy
337 // field Magnetic field
342 // Must be static - otherwise the data may disappear on return from
343 // this member function
344 static TString fname = "";
348 case 0: fname.Append(fSecMapName.Data()); break;
349 case 1: fname.Append(fAcceptanceName.Data()); break;
351 ::Error("GetFileName",
352 "Invalid indentifier %d for central object, must be 0 or 1!", what);
355 fname.Append(Form("_%s_%04dGeV_%c%1dkG.root",
356 AliForwardUtil::CollisionSystemString(sys),
357 sNN, (field < 0 ? 'm' : 'p'), TMath::Abs(field)));
362 //____________________________________________________________________
364 AliCentralMultiplicityTask::Manager::GetSecMapCorrection(UShort_t vtxbin) const
367 // Get the secondary map
376 ::Warning("GetSecMapCorrection","No secondary map defined");
379 return fSecmap->GetCorrection(vtxbin);
381 //____________________________________________________________________
383 AliCentralMultiplicityTask::Manager::GetAcceptanceCorrection(UShort_t vtxbin)
387 // Get the acceptance correction
396 ::Warning("GetAcceptanceCorrection","No acceptance map defined");
399 return fAcceptance->GetCorrection(vtxbin);
402 //____________________________________________________________________
404 AliCentralMultiplicityTask::Manager::Init(UShort_t sys,
412 // sys Collision system (1: pp, 2: PbPb)
413 // sNN Center of mass energy per nucleon pair [GeV]
414 // field Magnetic field [kG]
416 if(fIsInit) ::Warning("Init","Already initialised - overriding...");
418 TFile fsec(GetFullFileName(0,sys,sNN,field));
420 dynamic_cast<AliCentralCorrSecondaryMap*>(fsec.Get(fSecMapName.Data()));
422 ::Error("Init", "no central Secondary Map found!") ;
425 TFile facc(GetFullFileName(1,sys,sNN,field));
427 dynamic_cast<AliCentralCorrAcceptance*>(facc.Get(fAcceptanceName.Data()));
429 ::Error("Init", "no central Acceptance found!") ;
433 if(fSecmap && fAcceptance) {
436 "Central Manager initialised for sys %d, energy %d, field %d",sys,sNN,field);