2 // Implementation file for implementation of data analysis aft 900 GeV
4 // Author: A. Pulvirenti
12 #include "TParticle.h"
14 #include "TLorentzVector.h"
17 #include "AliESDpid.h"
18 #include "AliESDEvent.h"
19 #include "AliESDVertex.h"
20 #include "AliESDtrack.h"
22 #include "AliMCEvent.h"
23 #include "AliTOFT0maker.h"
24 #include "AliTOFcalib.h"
25 #include "AliCDBManager.h"
26 #include "AliITSPIDResponse.h"
27 #include "AliRsnMonitorTrack.h"
28 #include "AliRsnDaughter.h"
29 #include "AliRsnEvent.h"
31 #include "AliRsnAnalysisMonitorTask.h"
33 //__________________________________________________________________________________________________
34 AliRsnAnalysisMonitorTask::AliRsnAnalysisMonitorTask(const char *name) :
35 AliAnalysisTaskSE(name),
41 fTOFcalibrateESD(kFALSE),
42 fTOFcorrectTExp(kFALSE),
46 fEventCuts("eventCuts", AliRsnCut::kEvent),
47 fTrackCuts("trackCuts", AliRsnCut::kDaughter)
54 DefineOutput(1, TTree::Class());
57 //__________________________________________________________________________________________________
58 AliRsnAnalysisMonitorTask::AliRsnAnalysisMonitorTask(const AliRsnAnalysisMonitorTask& copy) :
59 AliAnalysisTaskSE(copy),
65 fTOFcalibrateESD(kFALSE),
66 fTOFcorrectTExp(kFALSE),
70 fEventCuts(copy.fEventCuts),
71 fTrackCuts(copy.fTrackCuts)
78 //__________________________________________________________________________________________________
79 AliRsnAnalysisMonitorTask& AliRsnAnalysisMonitorTask::operator=(const AliRsnAnalysisMonitorTask& copy)
82 // Assignment operator
85 fTOFcalibrateESD = copy.fTOFcalibrateESD;
86 fTOFcorrectTExp = copy.fTOFcorrectTExp;
87 fTOFuseT0 = copy.fTOFuseT0;
88 fTOFtuneMC = copy.fTOFtuneMC;
89 fTOFresolution = copy.fTOFresolution;
94 //__________________________________________________________________________________________________
95 AliRsnAnalysisMonitorTask::~AliRsnAnalysisMonitorTask()
101 if (fOut) delete fOut;
102 if (fESDpid) delete fESDpid;
103 if (fTrack) delete fTrack;
106 //__________________________________________________________________________________________________
107 void AliRsnAnalysisMonitorTask::UserCreateOutputObjects()
110 // Create the output data container
113 // setup TPC response
114 fESDpid = new AliESDpid;
115 fESDpid->GetTPCResponse().SetBetheBlochParameters(fTPCpar[0], fTPCpar[1], fTPCpar[2], fTPCpar[3], fTPCpar[4]);
117 // setup TOF maker & calibration
118 fTOFcalib = new AliTOFcalib;
119 fTOFmaker = new AliTOFT0maker(fESDpid, fTOFcalib);
120 fTOFmaker->SetTimeResolution(fTOFresolution);
122 // create output branch object
123 fTrack = new AliRsnMonitorTrack;
125 // create output tree
127 fOut = new TTree("rsnMonitor", "Informations on single tracks for cut checking");
128 fOut->Branch("tracks", "AliRsnMonitorTrack", &fTrack);
131 //__________________________________________________________________________________________________
132 void AliRsnAnalysisMonitorTask::UserExec(Option_t *)
135 // Main execution function.
136 // Fills the fHEvents data member with the following legenda:
137 // 0 -- event OK, prim vertex with tracks
138 // 1 -- event OK, prim vertex with SPD
139 // 2 -- event OK but vz large
143 // retrieve ESD event and related stack (if available)
144 AliESDEvent *esd = dynamic_cast<AliESDEvent*>(fInputEvent);
145 AliStack *stack = 0x0;
149 if (fMCEvent) stack = fMCEvent->Stack();
151 // create interface objects to AliRsnEvent to check event cuts
153 event.SetRef(esd, fMCEvent);
154 if (!fEventCuts.IsSelected(&event)) return;
157 Int_t type = EventEval(esd);
159 // if processable, then process it
160 if (type == 0) ProcessESD(esd, esd->GetPrimaryVertexTracks(), stack);
161 else if (type == 1) ProcessESD(esd, esd->GetPrimaryVertexSPD() , stack);
164 // update histogram container
168 //__________________________________________________________________________________________________
169 void AliRsnAnalysisMonitorTask::Terminate(Option_t *)
176 //__________________________________________________________________________________________________
177 Int_t AliRsnAnalysisMonitorTask::EventEval(AliESDEvent *esd)
180 // Checks if the event is good for analysis.
182 // ---> 0 if a good primary vertex with tracks was found,
183 // ---> 1 if a good SPD primary vertex was found
184 // ---> 2 otherwise (event to be rejected)
185 // In any case, adds an entry to the TTree, to keep trace of all events.
188 // get the best primary vertex:
189 // first try that with tracks, then the SPD one
190 const AliESDVertex *vTrk = esd->GetPrimaryVertexTracks();
191 const AliESDVertex *vSPD = esd->GetPrimaryVertexSPD();
192 if(vTrk->GetNContributors() > 0)
196 else if (vSPD->GetNContributors() > 0)
206 //__________________________________________________________________________________________________
207 void AliRsnAnalysisMonitorTask::ProcessESD
208 (AliESDEvent *esd, const AliESDVertex *v, AliStack *stack)
211 // Process the ESD container, to read all tracks and copy their useful values.
212 // All info are stored into an AliRsnMonitorTrack object and saved into the
213 // TClonesArray which is one of the branches of the output TTree.
216 // create interfacr objects
218 AliRsnDaughter daughter;
219 event.SetRef(esd, fMCEvent);
222 // create the response function and initialize it to MC or not
223 // depending if the AliStack object is there or not
224 Bool_t isMC = (stack != 0x0);
225 AliITSPIDResponse itsrsp(isMC);
227 // TOF stuff #1: init OCDB
228 Int_t run = esd->GetRunNumber();
229 AliCDBManager *cdb = AliCDBManager::Instance();
230 cdb->SetDefaultStorage("raw://");
232 // TOF stuff #2: init calibration
233 fTOFcalib->SetCorrectTExp(fTOFcorrectTExp);
235 // TOF stuff #3: calibrate
236 if (fTOFcalibrateESD) fTOFcalib->CalibrateESD(esd);
237 if (fTOFtuneMC) fTOFmaker->TuneForMC(esd);
240 fTOFmaker->ComputeT0TOF(esd);
241 fTOFmaker->ApplyT0TOF(esd);
242 fESDpid->MakePID(esd, kFALSE, 0.);
245 // loop on all tracks
246 Int_t i, k, nITS, ntracks = esd->GetNumberOfTracks();;
247 Bool_t isTPC, isITSSA, isTOF;
248 Float_t b[2], bCov[3];
251 for (i = 0; i < ntracks; i++)
253 AliESDtrack *track = esd->GetTrack(i);
254 event.SetDaughter(daughter, i, AliRsnDaughter::kTrack);
256 // reset the output object
257 // 'usable' flag will need to be set to 'ok'
261 fTrack->CutsPassed() = fTrackCuts.IsSelected(&daughter);
263 // skip NULL pointers, kink daughters and tracks which
264 // cannot be propagated to primary vertex
265 if (!track) continue;
266 if ((Int_t)track->GetKinkIndex(0) > 0) continue;
267 if (!track->RelateToVertex(v, esd->GetMagneticField(), kVeryBig)) continue;
269 // get MC info if possible
270 if (stack) fTrack->AdoptMC(TMath::Abs(track->GetLabel()), stack);
273 fTrack->Status() = (UInt_t)track->GetStatus();
274 fTrack->Length() = (Double_t)track->GetIntegratedLength();
275 fTrack->Charge() = (Int_t)track->Charge();
276 fTrack->PrecX() = (Double_t)track->Px();
277 fTrack->PrecY() = (Double_t)track->Py();
278 fTrack->PrecZ() = (Double_t)track->Pz();
280 // evaluate some flags from the status to decide what to do next in some points
281 isTPC = ((fTrack->Status() & AliESDtrack::kTPCin) != 0);
282 isITSSA = ((fTrack->Status() & AliESDtrack::kTPCin) == 0 && (fTrack->Status() & AliESDtrack::kITSrefit) != 0 && (fTrack->Status() & AliESDtrack::kITSpureSA) == 0 && (fTrack->Status() & AliESDtrack::kITSpid) != 0);
283 isTOF = ((fTrack->Status() & AliESDtrack::kTOFout) != 0 && (fTrack->Status() & AliESDtrack::kTIME) != 0);
285 // accept only tracks which are TPC+ITS or ITS standalone
288 fTrack->ITSsa() = kTRUE;
289 fTrack->TOFok() = kFALSE;
293 fTrack->ITSsa() = kFALSE;
294 fTrack->TOFok() = isTOF;
299 // get DCA to primary vertex
300 track->GetImpactParameters(b, bCov);
301 fTrack->DCAr() = (Double_t)b[0];
302 fTrack->DCAz() = (Double_t)b[1];
305 for (k = 0; k < 6; k++)
307 fTrack->ITSmap(k) = track->HasPointOnITSLayer(k);
311 fTrack->ITSchi2() = track->GetITSchi2();
312 fTrack->ITSsignal() = track->GetITSsignal();
313 nITS = fTrack->SSDcount() + fTrack->SDDcount();
314 for (k = 0; k < AliPID::kSPECIES; k++)
316 fTrack->ITSnsigma(k) = itsrsp.GetNumberOfSigmas(fTrack->Prec(), fTrack->ITSsignal(), (AliPID::EParticleType)k, nITS, kTRUE);
323 fTrack->TPCcount() = (Int_t)track->GetTPCclusters(0);
324 fTrack->TPCchi2() = (Double_t)track->GetTPCchi2();
325 fTrack->TPCsignal() = (Double_t)track->GetTPCsignal();
326 fTrack->PtpcX() = fTrack->PtpcY() = fTrack->PtpcZ() = 1E10;
327 if (track->GetInnerParam())
329 fTrack->PtpcX() = track->GetInnerParam()->Px();
330 fTrack->PtpcY() = track->GetInnerParam()->Py();
331 fTrack->PtpcZ() = track->GetInnerParam()->Pz();
332 for (k = 0; k < AliPID::kSPECIES; k++)
334 fTrack->TPCnsigma(k) = fESDpid->NumberOfSigmasTPC(track, (AliPID::EParticleType)k);
342 track->GetIntegratedTimes(time);
343 fTrack->TOFsignal() = (Double_t)track->GetTOFsignal();
344 for (k = 0; k < AliPID::kSPECIES; k++)
346 fTrack->TOFref(k) = time[k];
347 fTrack->TOFsigma(k) = (Double_t)fTOFmaker->GetExpectedSigma(fTrack->Prec(), time[k], AliPID::ParticleMass(k));
351 // add entry to TTree