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 **************************************************************************/
16 //-----------------------------------------------------------------------
17 // Example of task (running locally, on AliEn and CAF),
18 // which provides standard way of calculating acceptance and efficiency
19 // between different steps of the procedure.
20 // The ouptut of the task is a AliCFContainer from which the efficiencies
22 //-----------------------------------------------------------------------
23 // Author : Marta Verweij - UU
24 //-----------------------------------------------------------------------
27 #ifndef ALIPWG4HIGHPTSPECTRA_CXX
28 #define ALIPWG4HIGHPTSPECTRA_CXX
30 #include "AliPWG4HighPtSpectra.h"
40 #include "AliAnalysisManager.h"
41 #include "AliESDInputHandler.h"
42 #include "AliESDtrack.h"
43 #include "AliESDtrackCuts.h"
44 #include "AliExternalTrackParam.h"
49 #include "TParticle.h"
50 #include "AliMCEvent.h"
51 #include "AliMCEventHandler.h"
52 #include "AliCFContainer.h"
54 //#include "$ALICE_ROOT/PWG4/JetTasks/AliAnalysisHelperJetTasks.h"
57 using namespace std; //required for resolving the 'cout' symbol
59 ClassImp(AliPWG4HighPtSpectra)
61 //__________________________________________________________________________
62 AliPWG4HighPtSpectra::AliPWG4HighPtSpectra() : AliAnalysisTask("AliPWG4HighPtSpectra", ""),
77 //___________________________________________________________________________
78 AliPWG4HighPtSpectra::AliPWG4HighPtSpectra(const Char_t* name) :
79 AliAnalysisTask(name,""),
91 // Constructor. Initialization of Inputs and Outputs
93 AliDebug(2,Form("AliPWG4HighPtSpectra","Calling Constructor"));
94 // Input slot #0 works with a TChain ESD
95 DefineInput(0, TChain::Class());
96 // Output slot #0 writes into a TList
97 DefineOutput(0,TList::Class());
98 // Output slot #1, #2 writes into a AliCFContainer
99 DefineOutput(1,AliCFContainer::Class());
100 DefineOutput(2,AliCFContainer::Class());
101 // Output slot #3 writes into a AliESDtrackCuts
102 DefineOutput(3, AliESDtrackCuts::Class());
103 DefineOutput(4, AliESDtrackCuts::Class());
106 //________________________________________________________________________
107 void AliPWG4HighPtSpectra::LocalInit()
110 // Only called once at beginning
112 PostData(3,fTrackCuts);
113 PostData(4,fTrackCutsTPConly);
116 //________________________________________________________________________
117 void AliPWG4HighPtSpectra::ConnectInputData(Option_t *)
121 AliDebug(2,Form(">> AliPWG4HighPtSpectra::ConnectInputData \n"));
122 // cout << "cout >> AliPWG4HighPtSpectra::ConnectInputData" << endl;
123 printf(">> AliPWG4HighPtSpectra::ConnectInputData \n");
125 TTree* tree = dynamic_cast<TTree*> (GetInputData(0));
127 AliDebug(2,Form("ERROR: Could not read chain from input slot 0"));
130 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
133 AliDebug(2,Form("ERROR: Could not get ESDInputHandler"));
135 fESD = esdH->GetEvent();
140 //_________________________________________________
141 void AliPWG4HighPtSpectra::Exec(Option_t *)
144 // Main loop function
146 AliDebug(2,Form(">> AliPWG4HighPtSpectra::Exec \n"));
148 // All events without selection
149 fNEventAll->Fill(0.);
152 AliDebug(2,Form("ERROR: fESD not available"));
153 PostData(0,fHistList);
154 PostData(1,fCFManagerPos->GetParticleContainer());
155 PostData(2,fCFManagerNeg->GetParticleContainer());
159 Bool_t isSelected = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();
160 if(!isSelected) { //Select collison candidates
161 AliDebug(2,Form(" Trigger Selection: event REJECTED ... "));
162 PostData(0,fHistList);
163 PostData(1,fCFManagerPos->GetParticleContainer());
164 PostData(2,fCFManagerNeg->GetParticleContainer());
168 // Process MC truth, therefore we receive the AliAnalysisManager and ask it for the AliMCEventHandler
169 // This handler can return the current MC event
171 AliMCEventHandler *eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
172 // AliMCEventHandler* eventHandler = (AliMCEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
174 AliStack* stack = 0x0;
175 AliMCEvent* mcEvent = 0x0;
178 mcEvent = eventHandler->MCEvent();
180 AliDebug(2,Form("ERROR: Could not retrieve MC event"));
181 PostData(0,fHistList);
182 PostData(1,fCFManagerPos->GetParticleContainer());
183 PostData(2,fCFManagerNeg->GetParticleContainer());
187 AliDebug(2,Form("MC particles: %d", mcEvent->GetNumberOfTracks()));
189 stack = mcEvent->Stack(); //Particles Stack
191 AliDebug(2,Form("MC particles stack: %d", stack->GetNtrack()));
194 const AliESDVertex *vtx = fESD->GetPrimaryVertex();
195 AliDebug(2,Form("Vertex title %s, status %d, nCont %d\n",vtx->GetTitle(), vtx->GetStatus(), vtx->GetNContributors()));
197 if (vtx->GetNContributors() < 2) {
198 PostData(0,fHistList);
199 PostData(1,fCFManagerPos->GetParticleContainer());
200 PostData(2,fCFManagerNeg->GetParticleContainer());
205 vtx->GetXYZ(primVtx);
206 if(TMath::Sqrt(primVtx[0]*primVtx[0] + primVtx[1]*primVtx[1])>1. || TMath::Abs(primVtx[2]>10.)){
207 PostData(0,fHistList);
208 PostData(1,fCFManagerPos->GetParticleContainer());
209 PostData(2,fCFManagerNeg->GetParticleContainer());
213 if(!fESD->GetNumberOfTracks() || fESD->GetNumberOfTracks()<2){
215 PostData(0,fHistList);
216 PostData(1,fCFManagerPos->GetParticleContainer());
217 PostData(2,fCFManagerNeg->GetParticleContainer());
220 Int_t nTracks = fESD->GetNumberOfTracks();
221 AliDebug(2,Form("nTracks %d", nTracks));
225 PostData(0,fHistList);
226 PostData(1,fCFManagerPos->GetParticleContainer());
227 PostData(2,fCFManagerNeg->GetParticleContainer());
231 // Selected events for analysis
232 fNEventSel->Fill(0.);
235 Double_t containerInputRec[5] ;
236 Double_t containerInputTPConly[5];
237 Double_t containerInputMC[5];
238 //Now go to rec level
239 for (Int_t iTrack = 0; iTrack<nTracks; iTrack++)
241 if(!fESD->GetTrack(iTrack) ) continue;
242 AliESDtrack* track = fESD->GetTrack(iTrack);
243 if(!(AliExternalTrackParam *)track->GetTPCInnerParam()) continue;
244 AliExternalTrackParam *trackTPC = (AliExternalTrackParam *)track->GetTPCInnerParam();
245 if(!track || !trackTPC) continue;
248 track->GetImpactParameters(dca2D,dcaZ);
249 Float_t dca2DTPC, dcaZTPC;
250 track->GetImpactParametersTPC(dca2DTPC,dcaZTPC);
251 Float_t chi2PerClusterTPC = -1.;
252 Float_t nClustersTPC = track->GetTPCNcls();//track->GetTPCclusters(0);
253 if(nClustersTPC>0.) chi2PerClusterTPC = track->GetTPCchi2()/(2.*nClustersTPC-5.);
254 Float_t chi2PerClusterTPCIter1 = -1.;
255 Float_t nClustersTPCIter1 = track->GetTPCNclsIter1();
256 if(nClustersTPCIter1>0.) chi2PerClusterTPCIter1 = track->GetTPCchi2Iter1()/(2.*nClustersTPCIter1-5.);
259 containerInputRec[0] = track->Pt();
260 containerInputRec[1] = track->Phi();
261 containerInputRec[2] = track->Eta();
262 containerInputRec[3] = dca2D;
263 containerInputRec[4] = chi2PerClusterTPC;
265 //Store TPC Inner Params for TPConly tracks
266 containerInputTPConly[0] = trackTPC->Pt();
267 containerInputTPConly[1] = trackTPC->Phi();
268 containerInputTPConly[2] = trackTPC->Eta();
269 containerInputTPConly[3] = dca2DTPC/10.; //Divide by 10 in order to store in same container. Should be corrected back when looking at output.
270 containerInputTPConly[4] = chi2PerClusterTPCIter1;//TPC;
272 AliESDtrack* trackTPCESD = fTrackCutsTPConly->GetTPCOnlyTrack(fESD, iTrack);
274 if (fTrackCutsTPConly->AcceptTrack(trackTPCESD)) {
275 if(trackTPC->GetSign()>0.) fCFManagerPos->GetParticleContainer()->Fill(containerInputTPConly,kStepReconstructedTPCOnly);
276 if(trackTPC->GetSign()<0.) fCFManagerNeg->GetParticleContainer()->Fill(containerInputTPConly,kStepReconstructedTPCOnly);
280 if (fTrackCuts->AcceptTrack(track)) {
281 if(track->GetSign()>0.) fCFManagerPos->GetParticleContainer()->Fill(containerInputRec,kStepReconstructed);
282 if(track->GetSign()<0.) fCFManagerNeg->GetParticleContainer()->Fill(containerInputRec,kStepReconstructed);
285 //Only fill the MC containers if MC information is available
287 Int_t label = TMath::Abs(track->GetLabel());
288 TParticle *particle = stack->Particle(label) ;
289 if(!particle) continue;
291 containerInputMC[0] = particle->Pt();
292 containerInputMC[1] = particle->Phi();
293 containerInputMC[2] = particle->Eta();
294 containerInputMC[3] = 0.0;
295 containerInputMC[4] = 0.0;
297 //Container with primaries
298 if(stack->IsPhysicalPrimary(label)) {
299 if(particle->GetPDG()->Charge()>0.) {
300 fCFManagerPos->GetParticleContainer()->Fill(containerInputMC,kStepReconstructedMC);
302 if(particle->GetPDG()->Charge()<0.) {
303 fCFManagerNeg->GetParticleContainer()->Fill(containerInputMC,kStepReconstructedMC);
307 //Container with secondaries
308 if (!stack->IsPhysicalPrimary(label) ) {
309 if(particle->GetPDG()->Charge()>0.) {
310 fCFManagerPos->GetParticleContainer()->Fill(containerInputRec,kStepSecondaries);
312 if(particle->GetPDG()->Charge()<0.) {
313 fCFManagerNeg->GetParticleContainer()->Fill(containerInputRec,kStepSecondaries);
323 //Fill MC containters if particles are findable
325 for(int iPart = 1; iPart<(mcEvent->GetNumberOfPrimaries()); iPart++)//stack->GetNprimary();
327 AliMCParticle *mcPart = (AliMCParticle*)mcEvent->GetTrack(iPart);
328 if(!mcPart) continue;
331 containerInputMC[0] = mcPart->Pt();
332 containerInputMC[1] = mcPart->Phi();
333 containerInputMC[2] = mcPart->Eta();
334 containerInputMC[3] = 0.0;
335 containerInputMC[4] = 0.0;
338 Float_t trackLengthTPC = 0.;
339 if(stack->IsPhysicalPrimary(iPart)) {
340 if(mcPart->Charge()>0. && fCFManagerPos->CheckParticleCuts(3,mcPart)) {
341 fCFManagerPos->GetParticleContainer()->Fill(containerInputMC,kStepMCAcceptance) ;
342 trackLengthTPC = mcPart->GetTPCTrackLength(fESD->GetMagneticField(),0.1,counter,3.0);
343 if(trackLengthTPC > (float)fTrackCuts->GetMinNClusterTPC()) fCFManagerPos->GetParticleContainer()->Fill(containerInputMC,kStepMCtrackable) ;
345 if(mcPart->Charge()<0. && fCFManagerNeg->CheckParticleCuts(3,mcPart)) {
346 fCFManagerNeg->GetParticleContainer()->Fill(containerInputMC,kStepMCAcceptance) ;
347 trackLengthTPC = mcPart->GetTPCTrackLength(fESD->GetMagneticField(),0.1,counter,3.0);
348 if(trackLengthTPC > (float)fTrackCuts->GetMinNClusterTPC()) fCFManagerNeg->GetParticleContainer()->Fill(containerInputMC,kStepMCtrackable) ;
354 PostData(0,fHistList);
355 PostData(1,fCFManagerPos->GetParticleContainer());
356 PostData(2,fCFManagerNeg->GetParticleContainer());
361 //___________________________________________________________________________
362 void AliPWG4HighPtSpectra::Terminate(Option_t*)
364 // The Terminate() function is the last function to be called during
365 // a query. It always runs on the client, it can be used to present
366 // the results graphically or save the results to file.
369 //___________________________________________________________________________
370 void AliPWG4HighPtSpectra::CreateOutputObjects() {
371 //HERE ONE CAN CREATE OUTPUT OBJECTS, IN PARTICULAR IF THE OBJECT PARAMETERS DON'T NEED
372 //TO BE SET BEFORE THE EXECUTION OF THE TASK
374 AliDebug(2,Form("CreateOutputObjects","CreateOutputObjects of task %s", GetName()));
376 Bool_t oldStatus = TH1::AddDirectoryStatus();
377 TH1::AddDirectory(kFALSE);
381 fHistList = new TList();
382 fNEventAll = new TH1F("fNEventAll","NEventAll",1,-0.5,0.5);
383 fHistList->Add(fNEventAll);
384 fNEventSel = new TH1F("fNEventSel","NEvent Selected for analysis",1,-0.5,0.5);
385 fHistList->Add(fNEventSel);
387 TH1::AddDirectory(oldStatus);