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a9017e49 | 1 | /* $Id$ */ |
2 | ||
3 | #include "AliMultiplicityTask.h" | |
4 | ||
5 | #include <TStyle.h> | |
6 | #include <TSystem.h> | |
7 | #include <TCanvas.h> | |
8 | #include <TVector3.h> | |
9 | #include <TChain.h> | |
10 | #include <TFile.h> | |
69b09e3b | 11 | #include <TH1D.h> |
a9017e49 | 12 | #include <TH2F.h> |
13 | #include <TH3F.h> | |
14 | #include <TParticle.h> | |
15 | #include <TRandom.h> | |
16 | #include <TNtuple.h> | |
17 | #include <TObjString.h> | |
18 | #include <TF1.h> | |
19 | ||
20 | #include <AliLog.h> | |
21 | #include <AliESDVertex.h> | |
22 | #include <AliESDEvent.h> | |
23 | #include <AliStack.h> | |
24 | #include <AliHeader.h> | |
25 | #include <AliGenEventHeader.h> | |
26 | #include <AliMultiplicity.h> | |
27 | #include <AliAnalysisManager.h> | |
28 | #include <AliMCEventHandler.h> | |
29 | #include <AliMCEvent.h> | |
30 | #include <AliESDInputHandler.h> | |
31 | ||
745d6088 | 32 | #include "AliESDtrackCuts.h" |
a9017e49 | 33 | #include "AliPWG0Helper.h" |
0a0f4adb | 34 | #include "multiplicity/AliMultiplicityCorrection.h" |
a9017e49 | 35 | #include "AliCorrection.h" |
36 | #include "AliCorrectionMatrix3D.h" | |
37 | ||
a9017e49 | 38 | ClassImp(AliMultiplicityTask) |
39 | ||
40 | AliMultiplicityTask::AliMultiplicityTask(const char* opt) : | |
41 | AliAnalysisTask("AliMultiplicityTask", ""), | |
42 | fESD(0), | |
43 | fOption(opt), | |
745d6088 | 44 | fAnalysisMode(AliPWG0Helper::kSPD), |
a2cdb42c | 45 | fTrigger(AliPWG0Helper::kMB1), |
69b09e3b | 46 | fDeltaPhiCut(-1), |
2fa65f52 | 47 | fReadMC(kFALSE), |
f3eb27f6 | 48 | fUseMCVertex(kFALSE), |
a9017e49 | 49 | fMultiplicity(0), |
50 | fEsdTrackCuts(0), | |
51 | fSystSkipParticles(kFALSE), | |
52 | fSelectProcessType(0), | |
53 | fParticleSpecies(0), | |
69b09e3b | 54 | fdNdpT(0), |
a9017e49 | 55 | fPtSpectrum(0), |
56 | fOutput(0) | |
57 | { | |
58 | // | |
59 | // Constructor. Initialization of pointers | |
60 | // | |
61 | ||
69b09e3b | 62 | for (Int_t i = 0; i<8; i++) |
a9017e49 | 63 | fParticleCorrection[i] = 0; |
64 | ||
65 | // Define input and output slots here | |
66 | DefineInput(0, TChain::Class()); | |
67 | DefineOutput(0, TList::Class()); | |
68 | } | |
69 | ||
70 | AliMultiplicityTask::~AliMultiplicityTask() | |
71 | { | |
72 | // | |
73 | // Destructor | |
74 | // | |
75 | ||
76 | // histograms are in the output list and deleted when the output | |
77 | // list is deleted by the TSelector dtor | |
78 | ||
79 | if (fOutput) { | |
80 | delete fOutput; | |
81 | fOutput = 0; | |
82 | } | |
83 | } | |
84 | ||
85 | //________________________________________________________________________ | |
86 | void AliMultiplicityTask::ConnectInputData(Option_t *) | |
87 | { | |
88 | // Connect ESD | |
89 | // Called once | |
90 | ||
2fa65f52 | 91 | Printf("AliMultiplicityTask::ConnectInputData called"); |
92 | ||
a9017e49 | 93 | TTree* tree = dynamic_cast<TTree*> (GetInputData(0)); |
94 | if (!tree) { | |
95 | Printf("ERROR: Could not read tree from input slot 0"); | |
96 | } else { | |
97 | // Disable all branches and enable only the needed ones | |
69b09e3b | 98 | /* |
f3eb27f6 | 99 | tree->SetBranchStatus("*", 0); |
2fa65f52 | 100 | |
f3eb27f6 | 101 | tree->SetBranchStatus("AliESDHeader*", 1); |
102 | tree->SetBranchStatus("*Vertex*", 1); | |
a9017e49 | 103 | |
f3eb27f6 | 104 | if (fAnalysisMode == AliPWG0Helper::kSPD) { |
105 | tree->SetBranchStatus("AliMultiplicity*", 1); | |
106 | } | |
a9017e49 | 107 | |
745d6088 | 108 | if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS) { |
f3eb27f6 | 109 | //AliESDtrackCuts::EnableNeededBranches(tree); |
110 | tree->SetBranchStatus("Tracks*", 1); | |
2fa65f52 | 111 | } |
69b09e3b | 112 | */ |
a9017e49 | 113 | |
a9017e49 | 114 | AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); |
115 | ||
116 | if (!esdH) { | |
117 | Printf("ERROR: Could not get ESDInputHandler"); | |
118 | } else | |
119 | fESD = esdH->GetEvent(); | |
120 | } | |
f3eb27f6 | 121 | |
122 | // disable info messages of AliMCEvent (per event) | |
123 | AliLog::SetClassDebugLevel("AliMCEvent", AliLog::kWarning - AliLog::kDebug + 1); | |
a9017e49 | 124 | } |
125 | ||
126 | void AliMultiplicityTask::CreateOutputObjects() | |
127 | { | |
128 | // create result objects and add to output list | |
129 | ||
130 | fOutput = new TList; | |
131 | fOutput->SetOwner(); | |
132 | ||
133 | fMultiplicity = new AliMultiplicityCorrection("Multiplicity", "Multiplicity"); | |
134 | fOutput->Add(fMultiplicity); | |
69b09e3b | 135 | |
136 | fdNdpT = new TH1F("fdNdpT", "fdNdpT", 1000, 0, 10); | |
137 | fdNdpT->Sumw2(); | |
138 | fOutput->Add(fdNdpT); | |
a9017e49 | 139 | |
140 | if (fOption.Contains("skip-particles")) | |
141 | { | |
142 | fSystSkipParticles = kTRUE; | |
143 | AliInfo("WARNING: Systematic study enabled. Particles will be skipped."); | |
144 | } | |
145 | ||
146 | if (fOption.Contains("particle-efficiency")) | |
69b09e3b | 147 | for (Int_t i = 0; i<8; i++) |
a9017e49 | 148 | { |
149 | fParticleCorrection[i] = new AliCorrection(Form("correction_%d", i), Form("correction_%d", i)); | |
150 | fOutput->Add(fParticleCorrection[i]); | |
151 | } | |
152 | ||
153 | if (fOption.Contains("only-process-type-nd")) | |
154 | fSelectProcessType = 1; | |
155 | ||
156 | if (fOption.Contains("only-process-type-sd")) | |
157 | fSelectProcessType = 2; | |
158 | ||
159 | if (fOption.Contains("only-process-type-dd")) | |
160 | fSelectProcessType = 3; | |
161 | ||
162 | if (fSelectProcessType != 0) | |
163 | AliInfo(Form("WARNING: Systematic study enabled. Only considering process type %d", fSelectProcessType)); | |
164 | ||
165 | if (fOption.Contains("pt-spectrum-hist")) | |
166 | { | |
167 | TFile* file = TFile::Open("ptspectrum_fit.root"); | |
168 | if (file) | |
169 | { | |
170 | TString subStr(fOption(fOption.Index("pt-spectrum")+17, 3)); | |
171 | TString histName(Form("ptspectrum_%s", subStr.Data())); | |
172 | AliInfo(Form("Pt-Spectrum modification. Using %s.", histName.Data())); | |
69b09e3b | 173 | fPtSpectrum = (TH1D*) file->Get(histName); |
174 | if (!fPtSpectrum) | |
175 | AliError("Histogram not found"); | |
a9017e49 | 176 | } |
177 | else | |
178 | AliError("Could not open ptspectrum_fit.root. Pt Spectrum study could not be enabled."); | |
a9017e49 | 179 | } |
180 | ||
181 | if (fOption.Contains("pt-spectrum-func")) | |
182 | { | |
183 | if (fPtSpectrum) | |
184 | { | |
69b09e3b | 185 | Printf("Using function for systematic p_t study"); |
a9017e49 | 186 | } |
187 | else | |
188 | { | |
69b09e3b | 189 | Printf("ERROR: Could not find function for systematic p_t study"); |
190 | fPtSpectrum = new TH1D("fPtSpectrum", "fPtSpectrum", 1, 0, 100); | |
a9017e49 | 191 | fPtSpectrum->SetBinContent(1, 1); |
192 | } | |
a9017e49 | 193 | } |
194 | ||
69b09e3b | 195 | if (fPtSpectrum) |
196 | Printf("WARNING: Systematic study enabled. Pt spectrum will be modified"); | |
197 | ||
a9017e49 | 198 | if (fOption.Contains("particle-species")) { |
199 | fParticleSpecies = new TNtuple("fParticleSpecies", "fParticleSpecies", "vtx:Pi_True:K_True:p_True:o_True:Pi_Rec:K_Rec:p_Rec:o_Rec:nolabel:doublePrim:doubleCount"); | |
200 | fOutput->Add(fParticleSpecies); | |
201 | } | |
202 | ||
203 | // TODO set seed for random generator | |
204 | } | |
205 | ||
206 | void AliMultiplicityTask::Exec(Option_t*) | |
207 | { | |
208 | // process the event | |
209 | ||
210 | // Check prerequisites | |
211 | if (!fESD) | |
212 | { | |
745d6088 | 213 | AliDebug(AliLog::kError, "ESD not available"); |
a9017e49 | 214 | return; |
215 | } | |
216 | ||
69b09e3b | 217 | Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD, fTrigger); |
a9017e49 | 218 | |
f3eb27f6 | 219 | const AliESDVertex* vtxESD = AliPWG0Helper::GetVertex(fESD, fAnalysisMode); |
220 | Bool_t eventVertex = (vtxESD != 0); | |
a9017e49 | 221 | |
a9017e49 | 222 | Double_t vtx[3]; |
f3eb27f6 | 223 | if (vtxESD) |
224 | vtxESD->GetXYZ(vtx); | |
a9017e49 | 225 | |
2fa65f52 | 226 | // post the data already here |
227 | PostData(0, fOutput); | |
69b09e3b | 228 | |
a9017e49 | 229 | //const Float_t kPtCut = 0.3; |
230 | ||
2fa65f52 | 231 | // create list of (label, eta) tuples |
232 | Int_t inputCount = 0; | |
233 | Int_t* labelArr = 0; | |
234 | Float_t* etaArr = 0; | |
745d6088 | 235 | if (fAnalysisMode == AliPWG0Helper::kSPD) |
a9017e49 | 236 | { |
2fa65f52 | 237 | // get tracklets |
238 | const AliMultiplicity* mult = fESD->GetMultiplicity(); | |
239 | if (!mult) | |
a9017e49 | 240 | { |
2fa65f52 | 241 | AliDebug(AliLog::kError, "AliMultiplicity not available"); |
242 | return; | |
a9017e49 | 243 | } |
244 | ||
2fa65f52 | 245 | labelArr = new Int_t[mult->GetNumberOfTracklets()]; |
246 | etaArr = new Float_t[mult->GetNumberOfTracklets()]; | |
247 | ||
248 | // get multiplicity from ITS tracklets | |
249 | for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i) | |
a9017e49 | 250 | { |
2fa65f52 | 251 | //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i)); |
a9017e49 | 252 | |
69b09e3b | 253 | Float_t deltaPhi = mult->GetDeltaPhi(i); |
254 | ||
255 | if (fDeltaPhiCut > 0 && TMath::Abs(deltaPhi) > fDeltaPhiCut) | |
2fa65f52 | 256 | continue; |
a9017e49 | 257 | |
2fa65f52 | 258 | etaArr[inputCount] = mult->GetEta(i); |
69b09e3b | 259 | if (mult->GetLabel(i, 0) == mult->GetLabel(i, 1)) |
260 | { | |
261 | labelArr[inputCount] = mult->GetLabel(i, 0); | |
262 | } | |
263 | else | |
264 | labelArr[inputCount] = -1; | |
265 | ||
2fa65f52 | 266 | ++inputCount; |
267 | } | |
268 | } | |
745d6088 | 269 | else if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS) |
2fa65f52 | 270 | { |
271 | if (!fEsdTrackCuts) | |
272 | { | |
273 | AliDebug(AliLog::kError, "fESDTrackCuts not available"); | |
274 | return; | |
275 | } | |
a9017e49 | 276 | |
69b09e3b | 277 | if (vtxESD) |
a9017e49 | 278 | { |
69b09e3b | 279 | // get multiplicity from ESD tracks |
280 | TObjArray* list = fEsdTrackCuts->GetAcceptedTracks(fESD, (fAnalysisMode == AliPWG0Helper::kTPC)); | |
281 | Int_t nGoodTracks = list->GetEntries(); | |
282 | ||
283 | labelArr = new Int_t[nGoodTracks]; | |
284 | etaArr = new Float_t[nGoodTracks]; | |
285 | ||
286 | // loop over esd tracks | |
287 | for (Int_t i=0; i<nGoodTracks; i++) | |
a9017e49 | 288 | { |
69b09e3b | 289 | AliESDtrack* esdTrack = dynamic_cast<AliESDtrack*> (list->At(i)); |
290 | if (!esdTrack) | |
291 | { | |
292 | AliDebug(AliLog::kError, Form("ERROR: Could not retrieve track %d.", i)); | |
293 | continue; | |
294 | } | |
295 | ||
296 | etaArr[inputCount] = esdTrack->Eta(); | |
297 | labelArr[inputCount] = TMath::Abs(esdTrack->GetLabel()); | |
298 | ++inputCount; | |
a9017e49 | 299 | } |
69b09e3b | 300 | |
301 | delete list; | |
a9017e49 | 302 | } |
2fa65f52 | 303 | } |
a9017e49 | 304 | |
2fa65f52 | 305 | // eta range for nMCTracksSpecies, nESDTracksSpecies |
306 | Float_t etaRange = -1; | |
307 | switch (fAnalysisMode) { | |
773f84dc | 308 | case AliPWG0Helper::kInvalid: break; |
745d6088 | 309 | case AliPWG0Helper::kTPC: |
310 | case AliPWG0Helper::kTPCITS: | |
69b09e3b | 311 | etaRange = 1.0; break; |
312 | case AliPWG0Helper::kSPD: etaRange = 1.0; break; | |
2fa65f52 | 313 | } |
a9017e49 | 314 | |
2fa65f52 | 315 | if (!fReadMC) // Processing of ESD information |
316 | { | |
317 | if (eventTriggered && eventVertex) | |
318 | { | |
319 | Int_t nESDTracks05 = 0; | |
69b09e3b | 320 | Int_t nESDTracks10 = 0; |
2fa65f52 | 321 | Int_t nESDTracks15 = 0; |
322 | Int_t nESDTracks20 = 0; | |
a9017e49 | 323 | |
2fa65f52 | 324 | for (Int_t i=0; i<inputCount; ++i) |
325 | { | |
326 | Float_t eta = etaArr[i]; | |
a9017e49 | 327 | |
2fa65f52 | 328 | if (TMath::Abs(eta) < 0.5) |
329 | nESDTracks05++; | |
a9017e49 | 330 | |
69b09e3b | 331 | if (TMath::Abs(eta) < 1.0) |
332 | nESDTracks10++; | |
a9017e49 | 333 | |
2fa65f52 | 334 | if (TMath::Abs(eta) < 1.5) |
335 | nESDTracks15++; | |
336 | ||
337 | if (TMath::Abs(eta) < 2.0) | |
338 | nESDTracks20++; | |
a9017e49 | 339 | } |
2fa65f52 | 340 | |
69b09e3b | 341 | fMultiplicity->FillMeasured(vtx[2], nESDTracks05, nESDTracks10, nESDTracks15, nESDTracks20); |
2fa65f52 | 342 | } |
343 | } | |
344 | else if (fReadMC) // Processing of MC information | |
345 | { | |
346 | AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()); | |
347 | if (!eventHandler) { | |
348 | Printf("ERROR: Could not retrieve MC event handler"); | |
349 | return; | |
a9017e49 | 350 | } |
a9017e49 | 351 | |
2fa65f52 | 352 | AliMCEvent* mcEvent = eventHandler->MCEvent(); |
353 | if (!mcEvent) { | |
354 | Printf("ERROR: Could not retrieve MC event"); | |
355 | return; | |
356 | } | |
a9017e49 | 357 | |
2fa65f52 | 358 | AliStack* stack = mcEvent->Stack(); |
359 | if (!stack) | |
360 | { | |
361 | AliDebug(AliLog::kError, "Stack not available"); | |
362 | return; | |
363 | } | |
69b09e3b | 364 | |
2fa65f52 | 365 | AliHeader* header = mcEvent->Header(); |
366 | if (!header) | |
367 | { | |
368 | AliDebug(AliLog::kError, "Header not available"); | |
369 | return; | |
370 | } | |
a9017e49 | 371 | |
f3eb27f6 | 372 | if (fUseMCVertex) |
373 | { | |
374 | Printf("WARNING: Replacing vertex by MC vertex. This is for systematical checks only."); | |
375 | // get the MC vertex | |
376 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
377 | TArrayF vtxMC(3); | |
378 | genHeader->PrimaryVertex(vtxMC); | |
379 | ||
380 | vtx[2] = vtxMC[2]; | |
381 | } | |
69b09e3b | 382 | |
383 | // get process information | |
384 | AliPWG0Helper::MCProcessType processType = AliPWG0Helper::GetEventProcessType(header); | |
f3eb27f6 | 385 | |
2fa65f52 | 386 | Bool_t processEvent = kTRUE; |
387 | if (fSelectProcessType > 0) | |
388 | { | |
2fa65f52 | 389 | processEvent = kFALSE; |
a9017e49 | 390 | |
2fa65f52 | 391 | // non diffractive |
69b09e3b | 392 | if (fSelectProcessType == 1 && processType == AliPWG0Helper::kND) |
2fa65f52 | 393 | processEvent = kTRUE; |
a9017e49 | 394 | |
2fa65f52 | 395 | // single diffractive |
69b09e3b | 396 | if (fSelectProcessType == 2 && processType == AliPWG0Helper::kSD) |
2fa65f52 | 397 | processEvent = kTRUE; |
a9017e49 | 398 | |
2fa65f52 | 399 | // double diffractive |
69b09e3b | 400 | if (fSelectProcessType == 3 && processType == AliPWG0Helper::kDD) |
2fa65f52 | 401 | processEvent = kTRUE; |
a9017e49 | 402 | |
2fa65f52 | 403 | if (!processEvent) |
69b09e3b | 404 | Printf("Skipping this event, because it is not of the requested process type (%d)", (Int_t) processType); |
2fa65f52 | 405 | } |
a9017e49 | 406 | |
2fa65f52 | 407 | if (processEvent) |
408 | { | |
409 | // get the MC vertex | |
410 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
411 | TArrayF vtxMC(3); | |
412 | genHeader->PrimaryVertex(vtxMC); | |
413 | ||
414 | // get number of tracks from MC | |
415 | // loop over mc particles | |
416 | Int_t nPrim = stack->GetNprimary(); | |
417 | Int_t nMCPart = stack->GetNtrack(); | |
418 | ||
419 | // tracks in different eta ranges | |
420 | Int_t nMCTracks05 = 0; | |
69b09e3b | 421 | Int_t nMCTracks10 = 0; |
2fa65f52 | 422 | Int_t nMCTracks15 = 0; |
423 | Int_t nMCTracks20 = 0; | |
424 | Int_t nMCTracksAll = 0; | |
425 | ||
426 | // tracks per particle species, in |eta| < 2 (systematic study) | |
427 | Int_t nMCTracksSpecies[4]; // (pi, K, p, other) | |
428 | for (Int_t i = 0; i<4; ++i) | |
429 | nMCTracksSpecies[i] = 0; | |
430 | ||
431 | for (Int_t iMc = 0; iMc < nPrim; ++iMc) | |
432 | { | |
433 | AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc)); | |
a9017e49 | 434 | |
2fa65f52 | 435 | TParticle* particle = stack->Particle(iMc); |
a9017e49 | 436 | |
2fa65f52 | 437 | if (!particle) |
438 | { | |
439 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc)); | |
440 | continue; | |
441 | } | |
a9017e49 | 442 | |
2fa65f52 | 443 | Bool_t debug = kFALSE; |
444 | if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim, debug) == kFALSE) | |
445 | { | |
446 | //printf("%d) DROPPED ", iMC); | |
447 | //particle->Print(); | |
448 | continue; | |
449 | } | |
a9017e49 | 450 | |
2fa65f52 | 451 | //printf("%d) OK ", iMC); |
452 | //particle->Print(); | |
a9017e49 | 453 | |
2fa65f52 | 454 | //if (particle->Pt() < kPtCut) |
455 | // continue; | |
a9017e49 | 456 | |
2fa65f52 | 457 | Int_t particleWeight = 1; |
a9017e49 | 458 | |
2fa65f52 | 459 | Float_t pt = particle->Pt(); |
a9017e49 | 460 | |
2fa65f52 | 461 | // in case of systematic study, weight according to the change of the pt spectrum |
462 | // it cannot be just multiplied because we cannot count "half of a particle" | |
463 | // instead a random generator decides if the particle is counted twice (if value > 1) | |
464 | // or not (if value < 0) | |
465 | if (fPtSpectrum) | |
a9017e49 | 466 | { |
2fa65f52 | 467 | Int_t bin = fPtSpectrum->FindBin(pt); |
468 | if (bin > 0 && bin <= fPtSpectrum->GetNbinsX()) | |
a9017e49 | 469 | { |
2fa65f52 | 470 | Float_t factor = fPtSpectrum->GetBinContent(bin); |
471 | if (factor > 0) | |
472 | { | |
473 | Float_t random = gRandom->Uniform(); | |
474 | if (factor > 1 && random < factor - 1) | |
475 | { | |
476 | particleWeight = 2; | |
477 | } | |
478 | else if (factor < 1 && random < 1 - factor) | |
479 | particleWeight = 0; | |
480 | } | |
a9017e49 | 481 | } |
a9017e49 | 482 | } |
a9017e49 | 483 | |
2fa65f52 | 484 | //Printf("MC weight is: %d", particleWeight); |
a9017e49 | 485 | |
2fa65f52 | 486 | if (TMath::Abs(particle->Eta()) < 0.5) |
487 | nMCTracks05 += particleWeight; | |
a9017e49 | 488 | |
69b09e3b | 489 | if (TMath::Abs(particle->Eta()) < 1.0) |
490 | nMCTracks10 += particleWeight; | |
a9017e49 | 491 | |
2fa65f52 | 492 | if (TMath::Abs(particle->Eta()) < 1.5) |
493 | nMCTracks15 += particleWeight; | |
a9017e49 | 494 | |
2fa65f52 | 495 | if (TMath::Abs(particle->Eta()) < 2.0) |
496 | nMCTracks20 += particleWeight; | |
a9017e49 | 497 | |
2fa65f52 | 498 | nMCTracksAll += particleWeight; |
69b09e3b | 499 | |
500 | if (particle->Pt() > 0 && TMath::Abs(particle->Eta()) < 1.0) | |
501 | fdNdpT->Fill(particle->Pt(), 1.0 / particle->Pt()); | |
a9017e49 | 502 | |
2fa65f52 | 503 | if (fParticleCorrection[0] || fParticleSpecies) |
504 | { | |
505 | Int_t id = -1; | |
506 | switch (TMath::Abs(particle->GetPdgCode())) | |
507 | { | |
508 | case 211: id = 0; break; | |
509 | case 321: id = 1; break; | |
510 | case 2212: id = 2; break; | |
511 | default: id = 3; break; | |
512 | } | |
a9017e49 | 513 | |
2fa65f52 | 514 | if (TMath::Abs(particle->Eta()) < etaRange) |
515 | nMCTracksSpecies[id]++; | |
516 | ||
517 | if (fParticleCorrection[id]) | |
518 | fParticleCorrection[id]->GetTrackCorrection()->FillGene(vtxMC[2], particle->Eta(), particle->Pt()); | |
519 | } | |
520 | } // end of mc particle | |
a9017e49 | 521 | |
69b09e3b | 522 | fMultiplicity->FillGenerated(vtxMC[2], eventTriggered, eventVertex, processType, (Int_t) nMCTracks05, (Int_t) nMCTracks10, (Int_t) nMCTracks15, (Int_t) nMCTracks20, (Int_t) nMCTracksAll); |
a9017e49 | 523 | |
2fa65f52 | 524 | if (eventTriggered && eventVertex) |
a9017e49 | 525 | { |
2fa65f52 | 526 | Int_t nESDTracks05 = 0; |
69b09e3b | 527 | Int_t nESDTracks10 = 0; |
2fa65f52 | 528 | Int_t nESDTracks15 = 0; |
529 | Int_t nESDTracks20 = 0; | |
a9017e49 | 530 | |
2fa65f52 | 531 | // tracks per particle species, in |eta| < 2 (systematic study) |
532 | Int_t nESDTracksSpecies[7]; // (pi, K, p, other, nolabel, doublecount_prim, doublecount_all) | |
533 | for (Int_t i = 0; i<7; ++i) | |
534 | nESDTracksSpecies[i] = 0; | |
a9017e49 | 535 | |
2fa65f52 | 536 | Bool_t* foundPrimaries = new Bool_t[nPrim]; // to prevent double counting |
537 | for (Int_t i=0; i<nPrim; i++) | |
538 | foundPrimaries[i] = kFALSE; | |
a9017e49 | 539 | |
69b09e3b | 540 | Bool_t* foundPrimaries2 = new Bool_t[nPrim]; // to prevent double counting |
541 | for (Int_t i=0; i<nPrim; i++) | |
542 | foundPrimaries2[i] = kFALSE; | |
543 | ||
2fa65f52 | 544 | Bool_t* foundTracks = new Bool_t[nMCPart]; // to prevent double counting |
545 | for (Int_t i=0; i<nMCPart; i++) | |
546 | foundTracks[i] = kFALSE; | |
a9017e49 | 547 | |
2fa65f52 | 548 | for (Int_t i=0; i<inputCount; ++i) |
549 | { | |
550 | Float_t eta = etaArr[i]; | |
551 | Int_t label = labelArr[i]; | |
a9017e49 | 552 | |
2fa65f52 | 553 | Int_t particleWeight = 1; |
554 | ||
69b09e3b | 555 | // systematic study: 5% lower efficiency |
556 | if (fSystSkipParticles && (gRandom->Uniform() < 0.05)) | |
557 | continue; | |
558 | ||
2fa65f52 | 559 | // in case of systematic study, weight according to the change of the pt spectrum |
560 | if (fPtSpectrum) | |
561 | { | |
562 | TParticle* mother = 0; | |
563 | ||
564 | // preserve label for later | |
565 | Int_t labelCopy = label; | |
566 | if (labelCopy >= 0) | |
567 | labelCopy = AliPWG0Helper::FindPrimaryMotherLabel(stack, labelCopy); | |
568 | if (labelCopy >= 0) | |
569 | mother = stack->Particle(labelCopy); | |
570 | ||
571 | // in case of pt study we do not count particles w/o label, because they cannot be scaled | |
572 | if (!mother) | |
573 | continue; | |
574 | ||
575 | // it cannot be just multiplied because we cannot count "half of a particle" | |
576 | // instead a random generator decides if the particle is counted twice (if value > 1) | |
577 | // or not (if value < 0) | |
578 | Int_t bin = fPtSpectrum->FindBin(mother->Pt()); | |
579 | if (bin > 0 && bin <= fPtSpectrum->GetNbinsX()) | |
580 | { | |
581 | Float_t factor = fPtSpectrum->GetBinContent(bin); | |
582 | if (factor > 0) | |
583 | { | |
584 | Float_t random = gRandom->Uniform(); | |
585 | if (factor > 1 && random < factor - 1) | |
586 | { | |
587 | particleWeight = 2; | |
588 | } | |
589 | else if (factor < 1 && random < 1 - factor) | |
590 | particleWeight = 0; | |
591 | } | |
592 | } | |
593 | } | |
594 | ||
595 | //Printf("ESD weight is: %d", particleWeight); | |
596 | ||
597 | if (TMath::Abs(eta) < 0.5) | |
598 | nESDTracks05 += particleWeight; | |
a9017e49 | 599 | |
69b09e3b | 600 | if (TMath::Abs(eta) < 1.0) |
601 | nESDTracks10 += particleWeight; | |
a9017e49 | 602 | |
2fa65f52 | 603 | if (TMath::Abs(eta) < 1.5) |
604 | nESDTracks15 += particleWeight; | |
a9017e49 | 605 | |
2fa65f52 | 606 | if (TMath::Abs(eta) < 2.0) |
607 | nESDTracks20 += particleWeight; | |
a9017e49 | 608 | |
a9017e49 | 609 | |
69b09e3b | 610 | if (fParticleSpecies) |
2fa65f52 | 611 | { |
612 | Int_t motherLabel = -1; | |
613 | TParticle* mother = 0; | |
614 | ||
615 | // find mother | |
616 | if (label >= 0) | |
617 | motherLabel = AliPWG0Helper::FindPrimaryMotherLabel(stack, label); | |
618 | if (motherLabel >= 0) | |
619 | mother = stack->Particle(motherLabel); | |
620 | ||
621 | if (!mother) | |
622 | { | |
623 | // count tracks that did not have a label | |
624 | if (TMath::Abs(eta) < etaRange) | |
625 | nESDTracksSpecies[4]++; | |
2fa65f52 | 626 | } |
69b09e3b | 627 | else |
2fa65f52 | 628 | { |
69b09e3b | 629 | // get particle type (pion, proton, kaon, other) of mother |
630 | Int_t idMother = -1; | |
631 | switch (TMath::Abs(mother->GetPdgCode())) | |
632 | { | |
633 | case 211: idMother = 0; break; | |
634 | case 321: idMother = 1; break; | |
635 | case 2212: idMother = 2; break; | |
636 | default: idMother = 3; break; | |
637 | } | |
638 | ||
639 | // double counting is ok for particle ratio study | |
640 | if (TMath::Abs(eta) < etaRange) | |
641 | nESDTracksSpecies[idMother]++; | |
642 | ||
643 | // double counting is not ok for efficiency study | |
644 | ||
645 | // check if we already counted this particle, this way distinguishes double counted particles (bug/artefact in tracking) or double counted primaries due to secondaries (physics) | |
646 | if (foundTracks[label]) | |
647 | { | |
648 | if (TMath::Abs(eta) < etaRange) | |
649 | nESDTracksSpecies[6]++; | |
650 | } | |
651 | else | |
652 | { | |
653 | foundTracks[label] = kTRUE; | |
654 | ||
655 | // particle (primary) already counted? | |
656 | if (foundPrimaries[motherLabel]) | |
657 | { | |
658 | if (TMath::Abs(eta) < etaRange) | |
659 | nESDTracksSpecies[5]++; | |
660 | } | |
661 | else | |
662 | foundPrimaries[motherLabel] = kTRUE; | |
663 | } | |
2fa65f52 | 664 | } |
69b09e3b | 665 | } |
666 | ||
667 | if (fParticleCorrection[0]) | |
668 | { | |
669 | if (label >= 0 && stack->IsPhysicalPrimary(label)) | |
670 | { | |
671 | TParticle* particle = stack->Particle(label); | |
2fa65f52 | 672 | |
69b09e3b | 673 | // get particle type (pion, proton, kaon, other) |
674 | Int_t id = -1; | |
675 | switch (TMath::Abs(particle->GetPdgCode())) | |
676 | { | |
677 | case 211: id = 0; break; | |
678 | case 321: id = 1; break; | |
679 | case 2212: id = 2; break; | |
680 | default: id = 3; break; | |
681 | } | |
2fa65f52 | 682 | |
69b09e3b | 683 | // todo check if values are not completely off?? |
2fa65f52 | 684 | |
69b09e3b | 685 | // particle (primary) already counted? |
686 | if (!foundPrimaries2[label]) | |
687 | { | |
688 | foundPrimaries2[label] = kTRUE; | |
689 | fParticleCorrection[id]->GetTrackCorrection()->FillMeas(vtxMC[2], particle->Eta(), particle->Pt()); | |
690 | } | |
691 | } | |
692 | } | |
693 | } | |
694 | ||
695 | if (fParticleCorrection[0]) | |
696 | { | |
697 | // if the particle decays/stops before this radius we do not see it | |
698 | // 8cm larger than SPD layer 2 | |
699 | // 123cm TPC radius where a track has about 50 clusters (cut limit) | |
700 | const Float_t endRadius = (fAnalysisMode == AliPWG0Helper::kSPD) ? 8. : 123; | |
701 | ||
702 | // loop over all primaries that have not been found | |
703 | for (Int_t i=0; i<nPrim; i++) | |
704 | { | |
705 | // already found | |
706 | if (foundPrimaries2[i]) | |
707 | continue; | |
708 | ||
709 | TParticle* particle = 0; | |
710 | TClonesArray* trackrefs = 0; | |
711 | mcEvent->GetParticleAndTR(i, particle, trackrefs); | |
712 | ||
713 | // true primary and charged | |
714 | if (!AliPWG0Helper::IsPrimaryCharged(particle, nPrim)) | |
715 | continue; | |
716 | ||
717 | //skip particles with larger |eta| than 3, to keep the log clean, is anyway not included in correction map | |
718 | if (TMath::Abs(particle->Eta()) > 3) | |
719 | continue; | |
720 | ||
721 | // skipping checking of process type of daughter: Neither kPBrem, kPDeltaRay nor kPCerenkov should appear in the event generation | |
722 | ||
723 | // get particle type (pion, proton, kaon, other) | |
724 | Int_t id = -1; | |
725 | switch (TMath::Abs(particle->GetPdgCode())) | |
2fa65f52 | 726 | { |
69b09e3b | 727 | case 211: id = 4; break; |
728 | case 321: id = 5; break; | |
729 | case 2212: id = 6; break; | |
730 | default: id = 7; break; | |
731 | } | |
732 | ||
733 | if (!fParticleCorrection[id]) | |
734 | continue; | |
735 | ||
736 | // get last track reference | |
737 | AliTrackReference* trackref = dynamic_cast<AliTrackReference*> (trackrefs->Last()); | |
738 | ||
739 | if (!trackref) | |
740 | { | |
741 | Printf("ERROR: Could not get trackref of %d (count %d)", i, trackrefs->GetEntries()); | |
742 | particle->Print(); | |
2fa65f52 | 743 | continue; |
744 | } | |
69b09e3b | 745 | |
746 | // particle in tracking volume long enough... | |
747 | if (trackref->R() > endRadius) | |
748 | continue; | |
749 | ||
750 | if (particle->GetLastDaughter() >= 0) | |
2fa65f52 | 751 | { |
69b09e3b | 752 | Int_t uID = stack->Particle(particle->GetLastDaughter())->GetUniqueID(); |
753 | //if (uID != kPBrem && uID != kPDeltaRay && uID < kPCerenkov) | |
754 | if (uID == kPDecay) | |
755 | { | |
756 | // decayed | |
757 | ||
758 | Printf("Particle %d (%s) decayed at %f, daugher uniqueID: %d:", i, particle->GetName(), trackref->R(), uID); | |
759 | particle->Print(); | |
760 | Printf("Daughers:"); | |
761 | for (Int_t d = particle->GetFirstDaughter(); d <= particle->GetLastDaughter(); d++) | |
762 | stack->Particle(d)->Print(); | |
763 | Printf(""); | |
764 | ||
765 | fParticleCorrection[id]->GetTrackCorrection()->FillGene(vtxMC[2], particle->Eta(), particle->Pt()); | |
766 | continue; | |
767 | } | |
768 | } | |
769 | ||
770 | if (trackref->DetectorId() == -1) | |
771 | { | |
772 | // stopped | |
773 | Printf("Particle %d stopped at %f:", i, trackref->R()); | |
774 | particle->Print(); | |
775 | Printf(""); | |
776 | ||
777 | fParticleCorrection[id]->GetTrackCorrection()->FillMeas(vtxMC[2], particle->Eta(), particle->Pt()); | |
2fa65f52 | 778 | continue; |
779 | } | |
69b09e3b | 780 | |
781 | Printf("Particle %d simply not tracked", i); | |
782 | particle->Print(); | |
783 | Printf(""); | |
2fa65f52 | 784 | } |
785 | } | |
69b09e3b | 786 | |
2fa65f52 | 787 | delete[] foundTracks; |
788 | delete[] foundPrimaries; | |
69b09e3b | 789 | delete[] foundPrimaries2; |
a9017e49 | 790 | |
69b09e3b | 791 | if ((Int_t) nMCTracks15 > 10 && nESDTracks15 <= 3) |
f3eb27f6 | 792 | { |
793 | TTree* tree = dynamic_cast<TTree*> (GetInputData(0)); | |
69b09e3b | 794 | printf("WARNING: Event %lld %s (vtx-z = %f, recon: %f, contrib: %d, res: %f) has %d generated and %d reconstructed...\n", tree->GetReadEntry(), tree->GetCurrentFile()->GetName(), vtxMC[2], vtx[2], vtxESD->GetNContributors(), vtxESD->GetZRes(), nMCTracks15, nESDTracks15); |
f3eb27f6 | 795 | } |
a9017e49 | 796 | |
2fa65f52 | 797 | // fill response matrix using vtxMC (best guess) |
69b09e3b | 798 | fMultiplicity->FillCorrection(vtxMC[2], nMCTracks05, nMCTracks10, nMCTracks15, nMCTracks20, nMCTracksAll, nESDTracks05, nESDTracks10, nESDTracks15, nESDTracks20); |
a9017e49 | 799 | |
69b09e3b | 800 | fMultiplicity->FillMeasured(vtx[2], nESDTracks05, nESDTracks10, nESDTracks15, nESDTracks20); |
2fa65f52 | 801 | |
802 | if (fParticleSpecies) | |
803 | fParticleSpecies->Fill(vtxMC[2], nMCTracksSpecies[0], nMCTracksSpecies[1], nMCTracksSpecies[2], nMCTracksSpecies[3], nESDTracksSpecies[0], nESDTracksSpecies[1], nESDTracksSpecies[2], nESDTracksSpecies[3], nESDTracksSpecies[4], nESDTracksSpecies[5], nESDTracksSpecies[6]); | |
804 | } | |
805 | } | |
806 | } | |
a9017e49 | 807 | |
69b09e3b | 808 | if (etaArr) |
809 | delete[] etaArr; | |
810 | if (labelArr) | |
811 | delete[] labelArr; | |
a9017e49 | 812 | } |
813 | ||
814 | void AliMultiplicityTask::Terminate(Option_t *) | |
815 | { | |
816 | // The Terminate() function is the last function to be called during | |
817 | // a query. It always runs on the client, it can be used to present | |
818 | // the results graphically or save the results to file. | |
819 | ||
820 | fOutput = dynamic_cast<TList*> (GetOutputData(0)); | |
821 | if (!fOutput) { | |
822 | Printf("ERROR: fOutput not available"); | |
823 | return; | |
824 | } | |
825 | ||
826 | fMultiplicity = dynamic_cast<AliMultiplicityCorrection*> (fOutput->FindObject("Multiplicity")); | |
69b09e3b | 827 | for (Int_t i = 0; i < 8; ++i) |
a9017e49 | 828 | fParticleCorrection[i] = dynamic_cast<AliCorrection*> (fOutput->FindObject(Form("correction_%d", i))); |
829 | fParticleSpecies = dynamic_cast<TNtuple*> (fOutput->FindObject("fParticleSpecies")); | |
69b09e3b | 830 | |
831 | fdNdpT = dynamic_cast<TH1*> (fOutput->FindObject("fdNdpT")); | |
a9017e49 | 832 | |
833 | if (!fMultiplicity) | |
834 | { | |
835 | AliDebug(AliLog::kError, Form("ERROR: Histograms not available %p", (void*) fMultiplicity)); | |
836 | return; | |
837 | } | |
838 | ||
dca331bb | 839 | TFile* file = TFile::Open("multiplicity.root", "RECREATE"); |
a9017e49 | 840 | |
841 | fMultiplicity->SaveHistograms(); | |
69b09e3b | 842 | for (Int_t i = 0; i < 8; ++i) |
a9017e49 | 843 | if (fParticleCorrection[i]) |
844 | fParticleCorrection[i]->SaveHistograms(); | |
845 | if (fParticleSpecies) | |
846 | fParticleSpecies->Write(); | |
69b09e3b | 847 | if (fdNdpT) |
848 | fdNdpT->Write(); | |
a9017e49 | 849 | |
850 | TObjString option(fOption); | |
851 | option.Write(); | |
852 | ||
853 | file->Close(); | |
854 | ||
dca331bb | 855 | Printf("Writting result to multiplicity.root"); |
a9017e49 | 856 | } |