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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> | |
11 | #include <TH2F.h> | |
12 | #include <TH3F.h> | |
13 | #include <TParticle.h> | |
14 | #include <TRandom.h> | |
15 | #include <TNtuple.h> | |
16 | #include <TObjString.h> | |
17 | #include <TF1.h> | |
18 | ||
19 | #include <AliLog.h> | |
20 | #include <AliESDVertex.h> | |
21 | #include <AliESDEvent.h> | |
22 | #include <AliStack.h> | |
23 | #include <AliHeader.h> | |
24 | #include <AliGenEventHeader.h> | |
25 | #include <AliMultiplicity.h> | |
26 | #include <AliAnalysisManager.h> | |
27 | #include <AliMCEventHandler.h> | |
28 | #include <AliMCEvent.h> | |
29 | #include <AliESDInputHandler.h> | |
30 | ||
745d6088 | 31 | #include "AliESDtrackCuts.h" |
a9017e49 | 32 | #include "AliPWG0Helper.h" |
0a0f4adb | 33 | #include "multiplicity/AliMultiplicityCorrection.h" |
a9017e49 | 34 | #include "AliCorrection.h" |
35 | #include "AliCorrectionMatrix3D.h" | |
36 | ||
a9017e49 | 37 | ClassImp(AliMultiplicityTask) |
38 | ||
39 | AliMultiplicityTask::AliMultiplicityTask(const char* opt) : | |
40 | AliAnalysisTask("AliMultiplicityTask", ""), | |
41 | fESD(0), | |
42 | fOption(opt), | |
745d6088 | 43 | fAnalysisMode(AliPWG0Helper::kSPD), |
2fa65f52 | 44 | fReadMC(kFALSE), |
f3eb27f6 | 45 | fUseMCVertex(kFALSE), |
a9017e49 | 46 | fMultiplicity(0), |
47 | fEsdTrackCuts(0), | |
48 | fSystSkipParticles(kFALSE), | |
49 | fSelectProcessType(0), | |
50 | fParticleSpecies(0), | |
51 | fPtSpectrum(0), | |
52 | fOutput(0) | |
53 | { | |
54 | // | |
55 | // Constructor. Initialization of pointers | |
56 | // | |
57 | ||
58 | for (Int_t i = 0; i<4; i++) | |
59 | fParticleCorrection[i] = 0; | |
60 | ||
61 | // Define input and output slots here | |
62 | DefineInput(0, TChain::Class()); | |
63 | DefineOutput(0, TList::Class()); | |
64 | } | |
65 | ||
66 | AliMultiplicityTask::~AliMultiplicityTask() | |
67 | { | |
68 | // | |
69 | // Destructor | |
70 | // | |
71 | ||
72 | // histograms are in the output list and deleted when the output | |
73 | // list is deleted by the TSelector dtor | |
74 | ||
75 | if (fOutput) { | |
76 | delete fOutput; | |
77 | fOutput = 0; | |
78 | } | |
79 | } | |
80 | ||
81 | //________________________________________________________________________ | |
82 | void AliMultiplicityTask::ConnectInputData(Option_t *) | |
83 | { | |
84 | // Connect ESD | |
85 | // Called once | |
86 | ||
2fa65f52 | 87 | Printf("AliMultiplicityTask::ConnectInputData called"); |
88 | ||
a9017e49 | 89 | TTree* tree = dynamic_cast<TTree*> (GetInputData(0)); |
90 | if (!tree) { | |
91 | Printf("ERROR: Could not read tree from input slot 0"); | |
92 | } else { | |
93 | // Disable all branches and enable only the needed ones | |
f3eb27f6 | 94 | tree->SetBranchStatus("*", 0); |
2fa65f52 | 95 | |
f3eb27f6 | 96 | tree->SetBranchStatus("AliESDHeader*", 1); |
97 | tree->SetBranchStatus("*Vertex*", 1); | |
a9017e49 | 98 | |
f3eb27f6 | 99 | if (fAnalysisMode == AliPWG0Helper::kSPD) { |
100 | tree->SetBranchStatus("AliMultiplicity*", 1); | |
101 | } | |
a9017e49 | 102 | |
745d6088 | 103 | if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS) { |
f3eb27f6 | 104 | //AliESDtrackCuts::EnableNeededBranches(tree); |
105 | tree->SetBranchStatus("Tracks*", 1); | |
2fa65f52 | 106 | } |
a9017e49 | 107 | |
a9017e49 | 108 | AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); |
109 | ||
110 | if (!esdH) { | |
111 | Printf("ERROR: Could not get ESDInputHandler"); | |
112 | } else | |
113 | fESD = esdH->GetEvent(); | |
114 | } | |
f3eb27f6 | 115 | |
116 | // disable info messages of AliMCEvent (per event) | |
117 | AliLog::SetClassDebugLevel("AliMCEvent", AliLog::kWarning - AliLog::kDebug + 1); | |
a9017e49 | 118 | } |
119 | ||
120 | void AliMultiplicityTask::CreateOutputObjects() | |
121 | { | |
122 | // create result objects and add to output list | |
123 | ||
124 | fOutput = new TList; | |
125 | fOutput->SetOwner(); | |
126 | ||
127 | fMultiplicity = new AliMultiplicityCorrection("Multiplicity", "Multiplicity"); | |
128 | fOutput->Add(fMultiplicity); | |
129 | ||
130 | if (fOption.Contains("skip-particles")) | |
131 | { | |
132 | fSystSkipParticles = kTRUE; | |
133 | AliInfo("WARNING: Systematic study enabled. Particles will be skipped."); | |
134 | } | |
135 | ||
136 | if (fOption.Contains("particle-efficiency")) | |
137 | for (Int_t i = 0; i<4; i++) | |
138 | { | |
139 | fParticleCorrection[i] = new AliCorrection(Form("correction_%d", i), Form("correction_%d", i)); | |
140 | fOutput->Add(fParticleCorrection[i]); | |
141 | } | |
142 | ||
143 | if (fOption.Contains("only-process-type-nd")) | |
144 | fSelectProcessType = 1; | |
145 | ||
146 | if (fOption.Contains("only-process-type-sd")) | |
147 | fSelectProcessType = 2; | |
148 | ||
149 | if (fOption.Contains("only-process-type-dd")) | |
150 | fSelectProcessType = 3; | |
151 | ||
152 | if (fSelectProcessType != 0) | |
153 | AliInfo(Form("WARNING: Systematic study enabled. Only considering process type %d", fSelectProcessType)); | |
154 | ||
155 | if (fOption.Contains("pt-spectrum-hist")) | |
156 | { | |
157 | TFile* file = TFile::Open("ptspectrum_fit.root"); | |
158 | if (file) | |
159 | { | |
160 | TString subStr(fOption(fOption.Index("pt-spectrum")+17, 3)); | |
161 | TString histName(Form("ptspectrum_%s", subStr.Data())); | |
162 | AliInfo(Form("Pt-Spectrum modification. Using %s.", histName.Data())); | |
163 | fPtSpectrum = (TH1*) file->Get(histName); | |
164 | if (!fPtSpectrum) | |
165 | AliError("Histogram not found"); | |
166 | } | |
167 | else | |
168 | AliError("Could not open ptspectrum_fit.root. Pt Spectrum study could not be enabled."); | |
169 | ||
170 | if (fPtSpectrum) | |
171 | AliInfo("WARNING: Systematic study enabled. Pt spectrum will be modified"); | |
172 | } | |
173 | ||
174 | if (fOption.Contains("pt-spectrum-func")) | |
175 | { | |
176 | if (fPtSpectrum) | |
177 | { | |
178 | Printf("Using function from input list for systematic p_t study"); | |
179 | } | |
180 | else | |
181 | { | |
182 | fPtSpectrum = new TH1F("fPtSpectrum", "fPtSpectrum", 1, 0, 100); | |
183 | fPtSpectrum->SetBinContent(1, 1); | |
184 | } | |
185 | ||
186 | if (fPtSpectrum) | |
187 | AliInfo("WARNING: Systematic study enabled. Pt spectrum will be modified"); | |
188 | } | |
189 | ||
190 | if (fOption.Contains("particle-species")) { | |
191 | 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"); | |
192 | fOutput->Add(fParticleSpecies); | |
193 | } | |
194 | ||
195 | // TODO set seed for random generator | |
196 | } | |
197 | ||
198 | void AliMultiplicityTask::Exec(Option_t*) | |
199 | { | |
200 | // process the event | |
201 | ||
202 | // Check prerequisites | |
203 | if (!fESD) | |
204 | { | |
745d6088 | 205 | AliDebug(AliLog::kError, "ESD not available"); |
a9017e49 | 206 | return; |
207 | } | |
208 | ||
745d6088 | 209 | //MB1 definition |
210 | Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD->GetTriggerMask(), AliPWG0Helper::kMB1); | |
2fa65f52 | 211 | // only FASTOR |
745d6088 | 212 | //Bool_t eventTriggered = fESD->GetTriggerMask() & 32; |
a9017e49 | 213 | |
f3eb27f6 | 214 | const AliESDVertex* vtxESD = AliPWG0Helper::GetVertex(fESD, fAnalysisMode); |
215 | Bool_t eventVertex = (vtxESD != 0); | |
a9017e49 | 216 | |
a9017e49 | 217 | Double_t vtx[3]; |
f3eb27f6 | 218 | if (vtxESD) |
219 | vtxESD->GetXYZ(vtx); | |
a9017e49 | 220 | |
2fa65f52 | 221 | // post the data already here |
222 | PostData(0, fOutput); | |
a9017e49 | 223 | |
224 | //const Float_t kPtCut = 0.3; | |
225 | ||
2fa65f52 | 226 | // create list of (label, eta) tuples |
227 | Int_t inputCount = 0; | |
228 | Int_t* labelArr = 0; | |
229 | Float_t* etaArr = 0; | |
745d6088 | 230 | if (fAnalysisMode == AliPWG0Helper::kSPD) |
a9017e49 | 231 | { |
2fa65f52 | 232 | // get tracklets |
233 | const AliMultiplicity* mult = fESD->GetMultiplicity(); | |
234 | if (!mult) | |
a9017e49 | 235 | { |
2fa65f52 | 236 | AliDebug(AliLog::kError, "AliMultiplicity not available"); |
237 | return; | |
a9017e49 | 238 | } |
239 | ||
2fa65f52 | 240 | labelArr = new Int_t[mult->GetNumberOfTracklets()]; |
241 | etaArr = new Float_t[mult->GetNumberOfTracklets()]; | |
242 | ||
243 | // get multiplicity from ITS tracklets | |
244 | for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i) | |
a9017e49 | 245 | { |
2fa65f52 | 246 | //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i)); |
a9017e49 | 247 | |
2fa65f52 | 248 | // This removes non-tracklets in PDC06 data. Very bad solution. New solution is implemented for newer data. Keeping this for compatibility. |
249 | if (mult->GetDeltaPhi(i) < -1000) | |
250 | continue; | |
a9017e49 | 251 | |
2fa65f52 | 252 | etaArr[inputCount] = mult->GetEta(i); |
3886f106 | 253 | // TODO add second label array |
254 | labelArr[inputCount] = mult->GetLabel(i, 0); | |
2fa65f52 | 255 | ++inputCount; |
256 | } | |
257 | } | |
745d6088 | 258 | else if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS) |
2fa65f52 | 259 | { |
260 | if (!fEsdTrackCuts) | |
261 | { | |
262 | AliDebug(AliLog::kError, "fESDTrackCuts not available"); | |
263 | return; | |
264 | } | |
a9017e49 | 265 | |
2fa65f52 | 266 | // get multiplicity from ESD tracks |
5a6310fe | 267 | TObjArray* list = fEsdTrackCuts->GetAcceptedTracks(fESD, (fAnalysisMode == AliPWG0Helper::kTPC)); |
2fa65f52 | 268 | Int_t nGoodTracks = list->GetEntries(); |
a9017e49 | 269 | |
2fa65f52 | 270 | labelArr = new Int_t[nGoodTracks]; |
271 | etaArr = new Float_t[nGoodTracks]; | |
a9017e49 | 272 | |
2fa65f52 | 273 | // loop over esd tracks |
274 | for (Int_t i=0; i<nGoodTracks; i++) | |
a9017e49 | 275 | { |
2fa65f52 | 276 | AliESDtrack* esdTrack = dynamic_cast<AliESDtrack*> (list->At(i)); |
277 | if (!esdTrack) | |
a9017e49 | 278 | { |
2fa65f52 | 279 | AliDebug(AliLog::kError, Form("ERROR: Could not retrieve track %d.", i)); |
280 | continue; | |
a9017e49 | 281 | } |
2fa65f52 | 282 | |
283 | etaArr[inputCount] = esdTrack->Eta(); | |
284 | labelArr[inputCount] = TMath::Abs(esdTrack->GetLabel()); | |
285 | ++inputCount; | |
a9017e49 | 286 | } |
287 | ||
2fa65f52 | 288 | delete list; |
289 | } | |
a9017e49 | 290 | |
2fa65f52 | 291 | // eta range for nMCTracksSpecies, nESDTracksSpecies |
292 | Float_t etaRange = -1; | |
293 | switch (fAnalysisMode) { | |
773f84dc | 294 | case AliPWG0Helper::kInvalid: break; |
745d6088 | 295 | case AliPWG0Helper::kTPC: |
296 | case AliPWG0Helper::kTPCITS: | |
297 | etaRange = 0.9; break; | |
298 | case AliPWG0Helper::kSPD: etaRange = 2.0; break; | |
2fa65f52 | 299 | } |
a9017e49 | 300 | |
2fa65f52 | 301 | if (!fReadMC) // Processing of ESD information |
302 | { | |
303 | if (eventTriggered && eventVertex) | |
304 | { | |
305 | Int_t nESDTracks05 = 0; | |
306 | Int_t nESDTracks09 = 0; | |
307 | Int_t nESDTracks15 = 0; | |
308 | Int_t nESDTracks20 = 0; | |
a9017e49 | 309 | |
2fa65f52 | 310 | for (Int_t i=0; i<inputCount; ++i) |
311 | { | |
312 | Float_t eta = etaArr[i]; | |
a9017e49 | 313 | |
2fa65f52 | 314 | if (TMath::Abs(eta) < 0.5) |
315 | nESDTracks05++; | |
a9017e49 | 316 | |
2fa65f52 | 317 | if (TMath::Abs(eta) < 0.9) |
318 | nESDTracks09++; | |
a9017e49 | 319 | |
2fa65f52 | 320 | if (TMath::Abs(eta) < 1.5) |
321 | nESDTracks15++; | |
322 | ||
323 | if (TMath::Abs(eta) < 2.0) | |
324 | nESDTracks20++; | |
a9017e49 | 325 | } |
2fa65f52 | 326 | |
327 | fMultiplicity->FillMeasured(vtx[2], nESDTracks05, nESDTracks09, nESDTracks15, nESDTracks20); | |
328 | } | |
329 | } | |
330 | else if (fReadMC) // Processing of MC information | |
331 | { | |
332 | AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()); | |
333 | if (!eventHandler) { | |
334 | Printf("ERROR: Could not retrieve MC event handler"); | |
335 | return; | |
a9017e49 | 336 | } |
a9017e49 | 337 | |
2fa65f52 | 338 | AliMCEvent* mcEvent = eventHandler->MCEvent(); |
339 | if (!mcEvent) { | |
340 | Printf("ERROR: Could not retrieve MC event"); | |
341 | return; | |
342 | } | |
a9017e49 | 343 | |
2fa65f52 | 344 | AliStack* stack = mcEvent->Stack(); |
345 | if (!stack) | |
346 | { | |
347 | AliDebug(AliLog::kError, "Stack not available"); | |
348 | return; | |
349 | } | |
350 | ||
351 | AliHeader* header = mcEvent->Header(); | |
352 | if (!header) | |
353 | { | |
354 | AliDebug(AliLog::kError, "Header not available"); | |
355 | return; | |
356 | } | |
a9017e49 | 357 | |
f3eb27f6 | 358 | if (fUseMCVertex) |
359 | { | |
360 | Printf("WARNING: Replacing vertex by MC vertex. This is for systematical checks only."); | |
361 | // get the MC vertex | |
362 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
363 | TArrayF vtxMC(3); | |
364 | genHeader->PrimaryVertex(vtxMC); | |
365 | ||
366 | vtx[2] = vtxMC[2]; | |
367 | } | |
368 | ||
2fa65f52 | 369 | Bool_t processEvent = kTRUE; |
370 | if (fSelectProcessType > 0) | |
371 | { | |
372 | // getting process information; NB: this only works for Pythia | |
6b62a9c7 | 373 | Int_t processtype = AliPWG0Helper::GetEventProcessType(header); |
a9017e49 | 374 | |
2fa65f52 | 375 | processEvent = kFALSE; |
a9017e49 | 376 | |
2fa65f52 | 377 | // non diffractive |
6b62a9c7 | 378 | if (fSelectProcessType == 1 && processtype == AliPWG0Helper::kND ) |
2fa65f52 | 379 | processEvent = kTRUE; |
a9017e49 | 380 | |
2fa65f52 | 381 | // single diffractive |
6b62a9c7 | 382 | if (fSelectProcessType == 2 && processtype == AliPWG0Helper::kSD ) |
2fa65f52 | 383 | processEvent = kTRUE; |
a9017e49 | 384 | |
2fa65f52 | 385 | // double diffractive |
6b62a9c7 | 386 | if (fSelectProcessType == 3 && processtype == AliPWG0Helper::kDD ) |
2fa65f52 | 387 | processEvent = kTRUE; |
a9017e49 | 388 | |
2fa65f52 | 389 | if (!processEvent) |
390 | AliDebug(AliLog::kDebug, Form("Skipping this event, because it is not of the requested process type (%d)", processtype)); | |
391 | } | |
a9017e49 | 392 | |
393 | // systematic study: 10% lower efficiency | |
394 | if (fSystSkipParticles && (gRandom->Uniform() < 0.1)) | |
2fa65f52 | 395 | processEvent = kFALSE; |
a9017e49 | 396 | |
2fa65f52 | 397 | if (processEvent) |
398 | { | |
399 | // get the MC vertex | |
400 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
401 | TArrayF vtxMC(3); | |
402 | genHeader->PrimaryVertex(vtxMC); | |
403 | ||
404 | // get number of tracks from MC | |
405 | // loop over mc particles | |
406 | Int_t nPrim = stack->GetNprimary(); | |
407 | Int_t nMCPart = stack->GetNtrack(); | |
408 | ||
409 | // tracks in different eta ranges | |
410 | Int_t nMCTracks05 = 0; | |
411 | Int_t nMCTracks09 = 0; | |
412 | Int_t nMCTracks15 = 0; | |
413 | Int_t nMCTracks20 = 0; | |
414 | Int_t nMCTracksAll = 0; | |
415 | ||
416 | // tracks per particle species, in |eta| < 2 (systematic study) | |
417 | Int_t nMCTracksSpecies[4]; // (pi, K, p, other) | |
418 | for (Int_t i = 0; i<4; ++i) | |
419 | nMCTracksSpecies[i] = 0; | |
420 | ||
421 | for (Int_t iMc = 0; iMc < nPrim; ++iMc) | |
422 | { | |
423 | AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc)); | |
a9017e49 | 424 | |
2fa65f52 | 425 | TParticle* particle = stack->Particle(iMc); |
a9017e49 | 426 | |
2fa65f52 | 427 | if (!particle) |
428 | { | |
429 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc)); | |
430 | continue; | |
431 | } | |
a9017e49 | 432 | |
2fa65f52 | 433 | Bool_t debug = kFALSE; |
434 | if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim, debug) == kFALSE) | |
435 | { | |
436 | //printf("%d) DROPPED ", iMC); | |
437 | //particle->Print(); | |
438 | continue; | |
439 | } | |
a9017e49 | 440 | |
2fa65f52 | 441 | //printf("%d) OK ", iMC); |
442 | //particle->Print(); | |
a9017e49 | 443 | |
2fa65f52 | 444 | //if (particle->Pt() < kPtCut) |
445 | // continue; | |
a9017e49 | 446 | |
2fa65f52 | 447 | Int_t particleWeight = 1; |
a9017e49 | 448 | |
2fa65f52 | 449 | Float_t pt = particle->Pt(); |
a9017e49 | 450 | |
2fa65f52 | 451 | // in case of systematic study, weight according to the change of the pt spectrum |
452 | // it cannot be just multiplied because we cannot count "half of a particle" | |
453 | // instead a random generator decides if the particle is counted twice (if value > 1) | |
454 | // or not (if value < 0) | |
455 | if (fPtSpectrum) | |
a9017e49 | 456 | { |
2fa65f52 | 457 | Int_t bin = fPtSpectrum->FindBin(pt); |
458 | if (bin > 0 && bin <= fPtSpectrum->GetNbinsX()) | |
a9017e49 | 459 | { |
2fa65f52 | 460 | Float_t factor = fPtSpectrum->GetBinContent(bin); |
461 | if (factor > 0) | |
462 | { | |
463 | Float_t random = gRandom->Uniform(); | |
464 | if (factor > 1 && random < factor - 1) | |
465 | { | |
466 | particleWeight = 2; | |
467 | } | |
468 | else if (factor < 1 && random < 1 - factor) | |
469 | particleWeight = 0; | |
470 | } | |
a9017e49 | 471 | } |
a9017e49 | 472 | } |
a9017e49 | 473 | |
2fa65f52 | 474 | //Printf("MC weight is: %d", particleWeight); |
a9017e49 | 475 | |
2fa65f52 | 476 | if (TMath::Abs(particle->Eta()) < 0.5) |
477 | nMCTracks05 += particleWeight; | |
a9017e49 | 478 | |
2fa65f52 | 479 | if (TMath::Abs(particle->Eta()) < 0.9) |
480 | nMCTracks09 += particleWeight; | |
a9017e49 | 481 | |
2fa65f52 | 482 | if (TMath::Abs(particle->Eta()) < 1.5) |
483 | nMCTracks15 += particleWeight; | |
a9017e49 | 484 | |
2fa65f52 | 485 | if (TMath::Abs(particle->Eta()) < 2.0) |
486 | nMCTracks20 += particleWeight; | |
a9017e49 | 487 | |
2fa65f52 | 488 | nMCTracksAll += particleWeight; |
a9017e49 | 489 | |
2fa65f52 | 490 | if (fParticleCorrection[0] || fParticleSpecies) |
491 | { | |
492 | Int_t id = -1; | |
493 | switch (TMath::Abs(particle->GetPdgCode())) | |
494 | { | |
495 | case 211: id = 0; break; | |
496 | case 321: id = 1; break; | |
497 | case 2212: id = 2; break; | |
498 | default: id = 3; break; | |
499 | } | |
a9017e49 | 500 | |
2fa65f52 | 501 | if (TMath::Abs(particle->Eta()) < etaRange) |
502 | nMCTracksSpecies[id]++; | |
503 | ||
504 | if (fParticleCorrection[id]) | |
505 | fParticleCorrection[id]->GetTrackCorrection()->FillGene(vtxMC[2], particle->Eta(), particle->Pt()); | |
506 | } | |
507 | } // end of mc particle | |
a9017e49 | 508 | |
2fa65f52 | 509 | fMultiplicity->FillGenerated(vtxMC[2], eventTriggered, eventVertex, (Int_t) nMCTracks05, (Int_t) nMCTracks09, (Int_t) nMCTracks15, (Int_t) nMCTracks20, (Int_t) nMCTracksAll); |
a9017e49 | 510 | |
2fa65f52 | 511 | if (eventTriggered && eventVertex) |
a9017e49 | 512 | { |
2fa65f52 | 513 | Int_t nESDTracks05 = 0; |
514 | Int_t nESDTracks09 = 0; | |
515 | Int_t nESDTracks15 = 0; | |
516 | Int_t nESDTracks20 = 0; | |
a9017e49 | 517 | |
2fa65f52 | 518 | // tracks per particle species, in |eta| < 2 (systematic study) |
519 | Int_t nESDTracksSpecies[7]; // (pi, K, p, other, nolabel, doublecount_prim, doublecount_all) | |
520 | for (Int_t i = 0; i<7; ++i) | |
521 | nESDTracksSpecies[i] = 0; | |
a9017e49 | 522 | |
2fa65f52 | 523 | Bool_t* foundPrimaries = new Bool_t[nPrim]; // to prevent double counting |
524 | for (Int_t i=0; i<nPrim; i++) | |
525 | foundPrimaries[i] = kFALSE; | |
a9017e49 | 526 | |
2fa65f52 | 527 | Bool_t* foundTracks = new Bool_t[nMCPart]; // to prevent double counting |
528 | for (Int_t i=0; i<nMCPart; i++) | |
529 | foundTracks[i] = kFALSE; | |
a9017e49 | 530 | |
2fa65f52 | 531 | for (Int_t i=0; i<inputCount; ++i) |
532 | { | |
533 | Float_t eta = etaArr[i]; | |
534 | Int_t label = labelArr[i]; | |
a9017e49 | 535 | |
2fa65f52 | 536 | Int_t particleWeight = 1; |
537 | ||
538 | // in case of systematic study, weight according to the change of the pt spectrum | |
539 | if (fPtSpectrum) | |
540 | { | |
541 | TParticle* mother = 0; | |
542 | ||
543 | // preserve label for later | |
544 | Int_t labelCopy = label; | |
545 | if (labelCopy >= 0) | |
546 | labelCopy = AliPWG0Helper::FindPrimaryMotherLabel(stack, labelCopy); | |
547 | if (labelCopy >= 0) | |
548 | mother = stack->Particle(labelCopy); | |
549 | ||
550 | // in case of pt study we do not count particles w/o label, because they cannot be scaled | |
551 | if (!mother) | |
552 | continue; | |
553 | ||
554 | // it cannot be just multiplied because we cannot count "half of a particle" | |
555 | // instead a random generator decides if the particle is counted twice (if value > 1) | |
556 | // or not (if value < 0) | |
557 | Int_t bin = fPtSpectrum->FindBin(mother->Pt()); | |
558 | if (bin > 0 && bin <= fPtSpectrum->GetNbinsX()) | |
559 | { | |
560 | Float_t factor = fPtSpectrum->GetBinContent(bin); | |
561 | if (factor > 0) | |
562 | { | |
563 | Float_t random = gRandom->Uniform(); | |
564 | if (factor > 1 && random < factor - 1) | |
565 | { | |
566 | particleWeight = 2; | |
567 | } | |
568 | else if (factor < 1 && random < 1 - factor) | |
569 | particleWeight = 0; | |
570 | } | |
571 | } | |
572 | } | |
573 | ||
574 | //Printf("ESD weight is: %d", particleWeight); | |
575 | ||
576 | if (TMath::Abs(eta) < 0.5) | |
577 | nESDTracks05 += particleWeight; | |
a9017e49 | 578 | |
2fa65f52 | 579 | if (TMath::Abs(eta) < 0.9) |
580 | nESDTracks09 += particleWeight; | |
a9017e49 | 581 | |
2fa65f52 | 582 | if (TMath::Abs(eta) < 1.5) |
583 | nESDTracks15 += particleWeight; | |
a9017e49 | 584 | |
2fa65f52 | 585 | if (TMath::Abs(eta) < 2.0) |
586 | nESDTracks20 += particleWeight; | |
a9017e49 | 587 | |
a9017e49 | 588 | |
2fa65f52 | 589 | if (fParticleCorrection[0] || fParticleSpecies) |
590 | { | |
591 | Int_t motherLabel = -1; | |
592 | TParticle* mother = 0; | |
593 | ||
594 | // find mother | |
595 | if (label >= 0) | |
596 | motherLabel = AliPWG0Helper::FindPrimaryMotherLabel(stack, label); | |
597 | if (motherLabel >= 0) | |
598 | mother = stack->Particle(motherLabel); | |
599 | ||
600 | if (!mother) | |
601 | { | |
602 | // count tracks that did not have a label | |
603 | if (TMath::Abs(eta) < etaRange) | |
604 | nESDTracksSpecies[4]++; | |
605 | continue; | |
606 | } | |
607 | ||
608 | // get particle type (pion, proton, kaon, other) | |
609 | Int_t id = -1; | |
610 | switch (TMath::Abs(mother->GetPdgCode())) | |
611 | { | |
612 | case 211: id = 0; break; | |
613 | case 321: id = 1; break; | |
614 | case 2212: id = 2; break; | |
615 | default: id = 3; break; | |
616 | } | |
617 | ||
618 | // double counting is ok for particle ratio study | |
619 | if (TMath::Abs(eta) < etaRange) | |
620 | nESDTracksSpecies[id]++; | |
621 | ||
622 | // double counting is not ok for efficiency study | |
623 | ||
624 | // 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) | |
625 | if (foundTracks[label]) | |
626 | { | |
627 | if (TMath::Abs(eta) < etaRange) | |
628 | nESDTracksSpecies[6]++; | |
629 | continue; | |
630 | } | |
631 | foundTracks[label] = kTRUE; | |
632 | ||
633 | // particle (primary) already counted? | |
634 | if (foundPrimaries[motherLabel]) | |
635 | { | |
636 | if (TMath::Abs(eta) < etaRange) | |
637 | nESDTracksSpecies[5]++; | |
638 | continue; | |
639 | } | |
640 | foundPrimaries[motherLabel] = kTRUE; | |
641 | ||
642 | if (fParticleCorrection[id]) | |
643 | fParticleCorrection[id]->GetTrackCorrection()->FillMeas(vtxMC[2], mother->Eta(), mother->Pt()); | |
644 | } | |
645 | } | |
646 | ||
647 | delete[] foundTracks; | |
648 | delete[] foundPrimaries; | |
a9017e49 | 649 | |
f3eb27f6 | 650 | if ((Int_t) nMCTracks15 > 15 && nESDTracks15 <= 3) |
651 | { | |
652 | TTree* tree = dynamic_cast<TTree*> (GetInputData(0)); | |
653 | printf("WARNING: Event %lld %s (vtx-z = %f) has %d generated and %d reconstructed...\n", tree->GetReadEntry(), tree->GetCurrentFile()->GetName(), vtxMC[2], nMCTracks15, nESDTracks15); | |
654 | } | |
a9017e49 | 655 | |
2fa65f52 | 656 | // fill response matrix using vtxMC (best guess) |
657 | fMultiplicity->FillCorrection(vtxMC[2], nMCTracks05, nMCTracks09, nMCTracks15, nMCTracks20, nMCTracksAll, nESDTracks05, nESDTracks09, nESDTracks15, nESDTracks20); | |
a9017e49 | 658 | |
2fa65f52 | 659 | fMultiplicity->FillMeasured(vtx[2], nESDTracks05, nESDTracks09, nESDTracks15, nESDTracks20); |
660 | ||
661 | if (fParticleSpecies) | |
662 | 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]); | |
663 | } | |
664 | } | |
665 | } | |
a9017e49 | 666 | |
2fa65f52 | 667 | delete etaArr; |
668 | delete labelArr; | |
a9017e49 | 669 | } |
670 | ||
671 | void AliMultiplicityTask::Terminate(Option_t *) | |
672 | { | |
673 | // The Terminate() function is the last function to be called during | |
674 | // a query. It always runs on the client, it can be used to present | |
675 | // the results graphically or save the results to file. | |
676 | ||
677 | fOutput = dynamic_cast<TList*> (GetOutputData(0)); | |
678 | if (!fOutput) { | |
679 | Printf("ERROR: fOutput not available"); | |
680 | return; | |
681 | } | |
682 | ||
683 | fMultiplicity = dynamic_cast<AliMultiplicityCorrection*> (fOutput->FindObject("Multiplicity")); | |
684 | for (Int_t i = 0; i < 4; ++i) | |
685 | fParticleCorrection[i] = dynamic_cast<AliCorrection*> (fOutput->FindObject(Form("correction_%d", i))); | |
686 | fParticleSpecies = dynamic_cast<TNtuple*> (fOutput->FindObject("fParticleSpecies")); | |
687 | ||
688 | if (!fMultiplicity) | |
689 | { | |
690 | AliDebug(AliLog::kError, Form("ERROR: Histograms not available %p", (void*) fMultiplicity)); | |
691 | return; | |
692 | } | |
693 | ||
dca331bb | 694 | TFile* file = TFile::Open("multiplicity.root", "RECREATE"); |
a9017e49 | 695 | |
696 | fMultiplicity->SaveHistograms(); | |
697 | for (Int_t i = 0; i < 4; ++i) | |
698 | if (fParticleCorrection[i]) | |
699 | fParticleCorrection[i]->SaveHistograms(); | |
700 | if (fParticleSpecies) | |
701 | fParticleSpecies->Write(); | |
702 | ||
703 | TObjString option(fOption); | |
704 | option.Write(); | |
705 | ||
706 | file->Close(); | |
707 | ||
dca331bb | 708 | Printf("Writting result to multiplicity.root"); |
a9017e49 | 709 | } |