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),
40 fFirstEventSeen(false)
45 DefineOutput(1, TList::Class());
47 //____________________________________________________________________
48 AliCentralMultiplicityTask::AliCentralMultiplicityTask()
49 : AliAnalysisTaskSE(),
55 fFirstEventSeen(false)
61 //____________________________________________________________________
62 AliCentralMultiplicityTask::AliCentralMultiplicityTask(const AliCentralMultiplicityTask& o)
63 : AliAnalysisTaskSE(o),
66 fAODCentral(o.fAODCentral),
68 fUseSecondary(o.fUseSecondary),
69 fFirstEventSeen(o.fFirstEventSeen)
75 //____________________________________________________________________
76 AliCentralMultiplicityTask&
77 AliCentralMultiplicityTask::operator=(const AliCentralMultiplicityTask& o)
80 // Assignment operator
84 fAODCentral = o.fAODCentral;
85 fManager = o.fManager;
86 fUseSecondary = o.fUseSecondary;
87 fFirstEventSeen = o.fFirstEventSeen;
90 //____________________________________________________________________
91 void AliCentralMultiplicityTask::UserCreateOutputObjects()
94 // Create output objects
98 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
100 dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler());
101 if (!ah) AliFatal("No AOD output handler set in analysis manager");
104 TObject* obj = &fAODCentral;
105 ah->AddBranch("AliAODCentralMult", &obj);
112 //____________________________________________________________________
113 void AliCentralMultiplicityTask::UserExec(Option_t* /*option*/)
116 // Process each event
122 AliESDInputHandler* eventHandler =
123 dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()
124 ->GetInputEventHandler());
126 AliWarning("No inputhandler found for this event!");
129 AliESDEvent* esd = eventHandler->GetEvent();
131 if(!GetManager().IsInit() && !fFirstEventSeen) {
132 AliFMDEventInspector inspector;
133 inspector.ReadRunDetails(esd);
134 GetManager().Init(inspector.GetCollisionSystem(),
135 inspector.GetEnergy(),
136 inspector.GetField());
138 //std::cout<<inspector.GetCollisionSystem()<<" "<<inspector.GetEnergy()<<" "<<inspector.GetField()<<std::endl;
139 AliInfo("Manager of corrections in AliCentralMultiplicityTask init");
140 fFirstEventSeen = kTRUE;
143 //Selecting only events with |valid vertex| < 10 cm
144 const AliESDVertex* vertex = esd->GetPrimaryVertexSPD();
146 if(!(vertex->GetStatus())) return;
147 if(vertex->GetNContributors() <= 0) return ;
148 if(vertex->GetZRes() > 0.1 ) return;
149 Double_t vertexXYZ[3]={0,0,0};
150 vertex->GetXYZ(vertexXYZ);
151 if(TMath::Abs(vertexXYZ[2]) > 10) return;
154 Double_t vertexBinDouble = (vertexXYZ[2] + 10) / delta;
155 //HHD: The vtxbins are 1-10, not 0-9
156 Int_t vtxbin = Int_t(vertexBinDouble + 1) ;
158 // Make sure AOD is filled
159 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
161 dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler());
163 AliFatal("No AOD output handler set in analysis manager");
165 ah->SetFillAOD(kTRUE);
168 fAODCentral.Clear("");
169 TH2D *aodHist = &(fAODCentral.GetHistogram());
171 const AliMultiplicity* spdmult = esd->GetMultiplicity();
172 //Filling clusters in layer 1 used for tracklets...
173 for(Int_t j = 0; j< spdmult->GetNumberOfTracklets();j++)
174 aodHist->Fill(spdmult->GetEta(j),spdmult->GetPhi(j));
176 //...and then the unused ones in layer 1
177 for(Int_t j = 0; j< spdmult->GetNumberOfSingleClusters();j++)
178 aodHist->Fill(-TMath::Log(TMath::Tan(spdmult->GetThetaSingle(j)/2.)),
179 spdmult->GetPhiSingle(j));
184 TH1D* hAcceptance = fManager.GetAcceptanceCorrection(vtxbin);
186 hSecMap = fManager.GetSecMapCorrection(vtxbin);
188 //if (fUseSecondary && !hSecMap)
189 if (!hSecMap) AliFatal("No secondary map!");
190 if (!hAcceptance) AliFatal("No acceptance!");
192 if (hSecMap) aodHist->Divide(hSecMap);
194 for(Int_t nx = 1; nx <= aodHist->GetNbinsX(); nx++) {
195 Float_t accCor = hAcceptance->GetBinContent(nx);
197 Bool_t etabinSeen = kFALSE;
198 for(Int_t ny = 1; ny <= aodHist->GetNbinsY(); ny++) {
199 Float_t aodValue = aodHist->GetBinContent(nx,ny);
201 if(hSecMap) secCor = hSecMap->GetBinContent(nx,ny);
202 if (secCor > 0.5) etabinSeen = kTRUE;
203 if (aodValue < 0.000001) { aodHist->SetBinContent(nx,ny, 0); continue; }
204 if (accCor < 0.000001) accCor = 1;
205 Float_t aodNew = aodValue / accCor ;
206 aodHist->SetBinContent(nx,ny, aodNew);
207 Float_t aodErr = aodHist->GetBinError(nx,ny);
208 Float_t accErr = hAcceptance->GetBinError(nx);
210 Float_t error = aodNew*TMath::Sqrt(TMath::Power(aodErr/aodValue,2) +
211 TMath::Power(accErr/accCor,2) );
213 aodHist->SetBinError(nx,ny,error);
214 aodHist->SetBinError(nx,ny,aodErr);
217 //Filling underflow bin if we eta bin is in range
218 if(etabinSeen) aodHist->SetBinContent(nx,0, 1.);
223 //____________________________________________________________________
224 void AliCentralMultiplicityTask::Terminate(Option_t* /*option*/)
233 //____________________________________________________________________
235 AliCentralMultiplicityTask::Print(Option_t* /*option*/) const
244 //====================================================================
245 AliCentralMultiplicityTask::Manager::Manager() :
246 fAcceptancePath("$ALICE_ROOT/PWG2/FORWARD/corrections/CentralAcceptance"),
247 fSecMapPath("$ALICE_ROOT/PWG2/FORWARD/corrections/CentralSecMap"),
250 fAcceptanceName("centralacceptance"),
251 fSecMapName("centralsecmap"),
258 //____________________________________________________________________
259 AliCentralMultiplicityTask::Manager::Manager(const Manager& o)
260 :fAcceptancePath(o.fAcceptancePath),
261 fSecMapPath(o.fSecMapPath),
262 fAcceptance(o.fAcceptance),
264 fAcceptanceName(o.fAcceptanceName),
265 fSecMapName(o.fSecMapName),
272 //____________________________________________________________________
273 AliCentralMultiplicityTask::Manager&
274 AliCentralMultiplicityTask::Manager::operator=(const Manager& o)
277 // Assignment operator
279 fAcceptancePath = o.fAcceptancePath;
280 fSecMapPath = o.fSecMapPath;
281 fAcceptance = o.fAcceptance;
283 fAcceptanceName = o.fAcceptanceName;
284 fSecMapName = o.fSecMapName;
289 //____________________________________________________________________
291 AliCentralMultiplicityTask::Manager::GetFullFileName(UShort_t what,
297 // Get full path name to object file
301 // sys Collision system
302 // sNN Center of mass energy
303 // field Magnetic field
309 what == 0 ? GetSecMapPath() : GetAcceptancePath(),
310 GetFileName(what, sys, sNN, field));
313 //____________________________________________________________________
315 AliCentralMultiplicityTask::Manager::GetFileName(UShort_t what ,
321 // Get the full path name
325 // sys Collision system
326 // sNN Center of mass energy
327 // field Magnetic field
332 // Must be static - otherwise the data may disappear on return from
333 // this member function
334 static TString fname = "";
338 case 0: fname.Append(fSecMapName.Data()); break;
339 case 1: fname.Append(fAcceptanceName.Data()); break;
341 ::Error("GetFileName",
342 "Invalid indentifier %d for central object, must be 0 or 1!", what);
345 fname.Append(Form("_%s_%04dGeV_%c%1dkG.root",
346 AliForwardUtil::CollisionSystemString(sys),
347 sNN, (field < 0 ? 'm' : 'p'), TMath::Abs(field)));
352 //____________________________________________________________________
354 AliCentralMultiplicityTask::Manager::GetSecMapCorrection(UShort_t vtxbin) const
357 // Get the secondary map
366 ::Warning("GetSecMapCorrection","No secondary map defined");
369 return fSecmap->GetCorrection(vtxbin);
371 //____________________________________________________________________
373 AliCentralMultiplicityTask::Manager::GetAcceptanceCorrection(UShort_t vtxbin)
377 // Get the acceptance correction
386 ::Warning("GetAcceptanceCorrection","No acceptance map defined");
389 return fAcceptance->GetCorrection(vtxbin);
392 //____________________________________________________________________
394 AliCentralMultiplicityTask::Manager::Init(UShort_t sys,
402 // sys Collision system (1: pp, 2: PbPb)
403 // sNN Center of mass energy per nucleon pair [GeV]
404 // field Magnetic field [kG]
406 if(fIsInit) ::Warning("Init","Already initialised - overriding...");
408 TFile fsec(GetFullFileName(0,sys,sNN,field));
410 dynamic_cast<AliCentralCorrSecondaryMap*>(fsec.Get(fSecMapName.Data()));
412 ::Error("Init", "no central Secondary Map found!") ;
415 TFile facc(GetFullFileName(1,sys,sNN,field));
417 dynamic_cast<AliCentralCorrAcceptance*>(facc.Get(fAcceptanceName.Data()));
419 ::Error("Init", "no central Acceptance found!") ;
423 if(fSecmap && fAcceptance) {
426 "Central Manager initialised for sys %d, energy %d, field %d",sys,sNN,field);