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Moving PWG1 to PWGPP
[u/mrichter/AliRoot.git] / PWGPP / Centrality / AliMultiplicityCorrelations.cxx
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44a84424 1//-*- Mode: C++ -*-
2
3#if __GNUC__>= 3
4 using namespace std;
5#endif
6
7#include "TH1F.h"
8#include "TH2F.h"
9#include "TList.h"
10
11#include "AliMultiplicityCorrelations.h"
12
13// Task for HI Multiplicity correlation checks
14// Author: Jochen Thaeder <jochen@thaeder.de>
15
16/** ROOT macro for the implementation of ROOT specific class methods */
17ClassImp(AliMultiplicityCorrelations)
18
19/*
20 * ---------------------------------------------------------------------------------
21 * Constructor / Destructor
22 * ---------------------------------------------------------------------------------
23 */
24
25//##################################################################################
26AliMultiplicityCorrelations::AliMultiplicityCorrelations() :
27 TNamed(),
28 fHistList(NULL),
29 fIsMC(kFALSE),
30 fESDEvent(NULL),
31 fESDZDC(NULL), fESDVZERO(NULL), fESDMultiplicity(NULL),
32 fESDTrackCuts(NULL), fESDTrackCuts2(NULL),
33 fCleanSample(kFALSE), fCleanMinKeep(0.),fCleanMaxKeep(999999999.),
34 fRunNo(-1), fCurrentRunNo(-1),
35 fProcessTPC(kTRUE), fProcessSPD(kTRUE), fProcessVZERO(kTRUE), fProcessZDC(kTRUE),
36 fEsdTracks(0), fEsdTracksA(0), fTpcTracks(0), fTpcTracksA(0),
37 fVzeroMult(0.), fVzeroMultA(0.), fVzeroMultC(0.),
38 fSpdNClusters(0), fSpdNClustersInner(0), fSpdNClustersOuter(0),
39 fVzeroBinning(1500), fVzeroBinningMin(0.), fVzeroBinningMax(30000.),
40 fTpcBinning(800),fTpcBinningMin(0.),fTpcBinningMax(8000.),
41 fZdcBinning(1000),fZdcBinningMin(0.),fZdcBinningMax(6000.),
42 fZemBinning(500),fZemBinningMin(0.),fZemBinningMax(2500.),
43 fSpdBinning(750),fSpdBinningMin(0.),fSpdBinningMax(15000.) {
44 // see header file for class documentation
45
46}
47//##################################################################################
48AliMultiplicityCorrelations::AliMultiplicityCorrelations(Char_t* name, Char_t* title) :
49 TNamed(name,title),
50 fHistList(NULL),
51 fIsMC(kFALSE),
52 fESDEvent(NULL),
53 fESDZDC(NULL), fESDVZERO(NULL), fESDMultiplicity(NULL),
54 fESDTrackCuts(NULL), fESDTrackCuts2(NULL),
55 fCleanSample(kFALSE), fCleanMinKeep(0.),fCleanMaxKeep(999999999.),
56 fRunNo(-1), fCurrentRunNo(-1),
57 fProcessTPC(kTRUE), fProcessSPD(kTRUE),fProcessVZERO(kTRUE), fProcessZDC(kTRUE),
58 fEsdTracks(0), fEsdTracksA(0), fTpcTracks(0), fTpcTracksA(0),
59 fVzeroMult(0.), fVzeroMultA(0.), fVzeroMultC(0.),
60 fSpdNClusters(0), fSpdNClustersInner(0), fSpdNClustersOuter(0),
61 fVzeroBinning(1000), fVzeroBinningMin(0.), fVzeroBinningMax(20000.),
62 fTpcBinning(800),fTpcBinningMin(0.),fTpcBinningMax(8000.),
63 fZdcBinning(280),fZdcBinningMin(0.),fZdcBinningMax(140.),
64 fZemBinning(100),fZemBinningMin(0.),fZemBinningMax(5.),
65 fSpdBinning(750),fSpdBinningMin(0.),fSpdBinningMax(15000.) {
66 // see header file for class documentation
67
68}
69
70//##################################################################################
71AliMultiplicityCorrelations::~AliMultiplicityCorrelations() {
72 // see header file for class documentation
73
74 if ( fHistList ) {
75 fHistList->Clear();
76 delete fHistList;
77 }
78 fHistList = NULL;
79}
80
81/*
82 * ---------------------------------------------------------------------------------
83 * Initialize / Reset
84 * ---------------------------------------------------------------------------------
85 */
86
87//##################################################################################
88Int_t AliMultiplicityCorrelations::Initialize( const Char_t* listName) {
89 // see header file for class documentation
90
91 Int_t iResult = 0;
92
93 fHistList = new TList();
94 fHistList->SetOwner(kTRUE);
95 fHistList->SetName(Form("MultiplicityCorrelations_%s",listName));
96 iResult = SetupHistograms();
97
98 if (fProcessZDC) { AliInfo("Processing of ZDC enabled"); }
99 if (fProcessTPC) { AliInfo("Processing of TPC enabled"); }
100 if (fProcessSPD) { AliInfo("Processing of SPD enabled"); }
101 if (fProcessVZERO) { AliInfo("Processing of VZERO enabled"); }
102
103 return iResult;
104}
105
106/*
107 * ---------------------------------------------------------------------------------
108 * Output - public
109 * ---------------------------------------------------------------------------------
110 */
111
112//##################################################################################
113Int_t AliMultiplicityCorrelations::ProcessEvent(AliESDEvent *esd) {
114 // see header file for class documentation
115
116 Int_t iResult = 0;
117
118 if ( ! AddESDEvent(esd) ) {
119 AliWarning("No ESD event.");
120 return -1;
121 }
122
123 // -- TPC .. To be done before the others
124 if (fESDEvent->GetNumberOfTracks() > 0 && fProcessTPC)
125 iResult = ProcessTPC();
126
127 // -- TPC / global track cuts
128 if (iResult == -3)
129 return iResult;
130
131 // -- check if cleaning
132 if (iResult == -2)
133 return iResult;
134
135 // -- SPD
136 if (fESDMultiplicity && fProcessSPD)
137 iResult = ProcessSPD();
138
139 // -- VZERO
140 if (fESDVZERO && fProcessVZERO)
141 iResult = ProcessVZERO();
142
143 // -- ZDC and Correlations
144 if (fESDZDC && fProcessZDC)
145 iResult = ProcessZDC();
146
147 return iResult;
148}
149
150////////////////////////////////////////////////////////////////////////////////////
151////////////////////////////////////////////////////////////////////////////////////
152/// ///
153////// PRIVATE //////
154/// ///
155////////////////////////////////////////////////////////////////////////////////////
156////////////////////////////////////////////////////////////////////////////////////
157
158/*
159 * ---------------------------------------------------------------------------------
160 * Setup / Initialize - private
161 * ---------------------------------------------------------------------------------
162 */
163
164//##################################################################################
165Bool_t AliMultiplicityCorrelations::AddESDEvent( AliESDEvent* esd ) {
166 // see header file for class documentation
167
168 fESDEvent = esd;
169
170 // -- Check for ESD
171 if ( !fESDEvent ) {
172 AliWarning("No ESD event present.");
173 return kFALSE;
174 }
175
176 fESDZDC = esd->GetESDZDC();
177 if ( !fESDZDC ) {
178 AliInfo("No ZDC information !");
179 }
180
181 fESDVZERO = esd->GetVZEROData();
182 if ( !fESDVZERO ) {
183 AliInfo("No VZERO information !");
184 }
185
186 fESDMultiplicity = const_cast<AliMultiplicity*>(esd->GetMultiplicity());
187 if ( !fESDMultiplicity ) {
188 AliInfo("No Multiplicity information !");
189 }
190
191 if (fCurrentRunNo == esd->GetRunNumber())
192 return kTRUE;
193
194 fCurrentRunNo = esd->GetRunNumber();
195 fRunNo = fCurrentRunNo;
196
197 // CHANGE HERE FOR RUN RANGES
198 if ( fRunNo == 137162 ) fRunNo = 137161;
199 else if ( fRunNo == 137365 ) fRunNo = 137366;
200 else if ( fRunNo > 137366 ) fRunNo = 137366;
201 // CHANGE HERE FOR RUN RANGES
202
203 return kTRUE;
204}
205
206//##################################################################################
207Int_t AliMultiplicityCorrelations::SetupHistograms() {
208 // see header file for class documentation
209
210 Int_t iResult = 0;
211
212 if (fProcessVZERO) iResult = SetupVZERO();
213 if (fProcessZDC) iResult = SetupZDC();
214 if (fProcessTPC) iResult = SetupTPC();
215 if (fProcessSPD) iResult = SetupSPD();
216
217 iResult = SetupCorrelations();
218
219 return iResult;
220}
221
222//##################################################################################
223Int_t AliMultiplicityCorrelations::SetupVZERO() {
224 // see header file for class documentation
225
226 // VzeroMult
227 fHistList->Add(new TH1F("fVzeroMult", "Multiplicity^{VZERO};Multiplicity^{VZERO};N_{Events}",
228 fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
229
230 fHistList->Add(new TH1F("fVzeroMultUnCorr", "Multiplicity^{VZERO} uncorrected;Multiplicity^{VZERO};N_{Events}",
231 fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
232
233 fHistList->Add(new TH2F("fVzeroMultAC", "Multiplicity^{VZERO} A vs C;Multiplicity^{VZERO}A ;Multiplicity^{VZERO} C",
234 fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
235
236 return 0;
237}
238
239//##################################################################################
240Int_t AliMultiplicityCorrelations::SetupZDC() {
241 // see header file for class documentation
242
243 // E_{ZDC}
244 fHistList->Add(new TH1F("fZdcEzdc", "E_{ZDC};E_{ZDC} (TeV);N_{Events}",
245 fZdcBinning,fZdcBinningMin,fZdcBinningMax));
246
247 // E_{ZEM}
248 fHistList->Add(new TH1F("fZdcEzem", "E_{ZEM};E_{ZEM} (TeV);N_{Events}",
249 fZemBinning,fZemBinningMin,fZemBinningMax));
250
251 // E_{ZEM} vs E_{ZDC}
252 fHistList->Add(new TH2F("fZdcEzemEzdc", "E_{ZEM} vs E_{ZDC};E_{ZEM} (TeV); E_{ZDC} (TeV)",
253 fZemBinning,fZemBinningMin,fZemBinningMax, fZdcBinning,fZdcBinningMin,fZdcBinningMax));
254
255 return 0;
256}
257
258//##################################################################################
259Int_t AliMultiplicityCorrelations::SetupTPC() {
260 // see header file for class documentation
261
262 // Multiplicity
263 fHistList->Add(new TH1F("fTpcNch0", "N_{ch} esdTracks; N_{ch};N_{Events}",
264 fTpcBinning,fTpcBinningMin,fTpcBinningMax));
265 fHistList->Add(new TH1F("fTpcNch1", "N_{ch} accepted esdTracks; N_{ch};N_{Events}",
266 fTpcBinning,fTpcBinningMin,fTpcBinningMax));
267 fHistList->Add(new TH1F("fTpcNch2", "N_{ch} tpcTracks; N_{ch};N_{Events}",
268 fTpcBinning,fTpcBinningMin,fTpcBinningMax));
269 fHistList->Add(new TH1F("fTpcNch3", "N_{ch} accepted tpcTracks; N_{ch};N_{Events}",
270 fTpcBinning,fTpcBinningMin,fTpcBinningMax));
271
272 fHistList->Add(new TH2F("fTpcCorrNch","N_{ch} accepted tpcTracks vs globalTracks; N_{tpc};N_{global}",
273 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fTpcBinning,fTpcBinningMin,fTpcBinningMax));
274
275 fHistList->Add(new TH1F("fTpcRatioNch","N_{ch} accepted tpcTracks/globalTracks; N_{ch};Ratio",
276 201,0.,2.));
277
278 fHistList->Add(new TH2F("fTpcCorrNchAll","N_{ch} accepted tpcTracks vs globalTracks - uncleaned ; N_{tpc};N_{global}",
279 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fTpcBinning,fTpcBinningMin,fTpcBinningMax));
280
281 fHistList->Add(new TH1F("fTpcRatioNchAll","N_{ch} accepted tpcTracks/globalTracks - uncleaned; N_{ch};Ratio",
282 201,0.,2.));
283
284 return 0;
285}
286
287//##################################################################################
288Int_t AliMultiplicityCorrelations::SetupCorrelations() {
289 // see header file for class documentation
290
291 // ----------------------------------------------------
292 // TPC vs ZDC
293 // ----------------------------------------------------
294 if (fProcessTPC && fProcessZDC) {
295
296 // N_{ch} vs E_{ZDC}
297 fHistList->Add(new TH2F("fCorrEzdcNch", "N_{ch}^{TPC} vs E_{ZDC};N_{ch}^{TPC};E_{ZDC} (TeV)",
298 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fZdcBinning,fZdcBinningMin,fZdcBinningMax));
299
300
301 // N_{ch} vs E_{ZEM}
302 fHistList->Add(new TH2F("fCorrEzemNch", "N_{ch}^{TPC} vs E_{ZEM};N_{ch}^{TPC};E_{ZEM} (TeV)",
303 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fZdcBinning,fZdcBinningMin,fZdcBinningMax));
304 }
305 // ----------------------------------------------------
306 // ZDC vs VZERO
307 // ----------------------------------------------------
308 if (fProcessZDC && fProcessVZERO) {
309
310 // E_{ZDC} vs Multiplicity VZERO
311 fHistList->Add(new TH2F("fCorrEzdcVzero",
312 "E_{ZDC} vs Multiplicity^{VZERO};E_{ZDC} (TeV);Multiplicity^{VZERO}",
313 fZdcBinning,fZdcBinningMin,fZdcBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
314
315 // E_{ZEM} vs Multiplicity VZERO
316 fHistList->Add(new TH2F("fCorrEzemVzero",
317 "E_{ZEM} vs Multiplicity^{VZERO};E_{ZEM} (TeV);Multiplicity^{VZERO}",
318 fZemBinning,fZemBinningMin,fZemBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
319
320 }
321 // ----------------------------------------------------
322 // TPC vs VZERO
323 // ----------------------------------------------------
324 if ( fProcessTPC && fProcessVZERO ) {
325
326 fHistList->Add(new TH2F("fCorrVzeroNch",
327 "N_{ch}^{TPC} vs Multiplicity^{VZERO};N_{ch}^{TPC};Multiplicity^{VZERO}",
328 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
329
330 fHistList->Add(new TH2F("fCorrVzeroNchUnCorr",
331 "N_{ch}^{TPC} vs Multiplicity^{VZERO} uncorrected;N_{ch}^{TPC};Multiplicity^{VZERO}",
332 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
333
334 fHistList->Add(new TH2F("fCorrVzeroESDNch",
335 "N_{ch}^{global} vs Multiplicity^{VZERO};N_{ch}^{TPC};Multiplicity^{VZERO}",
336 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
337
338 fHistList->Add(new TH2F("fCorrVzeroESDNchUnCorr",
339 "N_{ch}^{global} vs Multiplicity^{VZERO} uncorrected;N_{ch}^{TPC};Multiplicity^{VZERO}",
340 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax));
341
342 }
343 // ----------------------------------------------------
344 // TPC vs SPD
345 // ----------------------------------------------------
346 if ( fProcessSPD && fProcessTPC ) {
347
348 fHistList->Add(new TH2F("fCorrSpdTpcNch", "N_{ch}^{TPC} vs N_{clusters}^{SPD};N_{ch}^{TPC};N_{clusters}^{SPD}",
349 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
350
351 fHistList->Add(new TH2F("fCorrSpdOuterTpcNch"," N_{ch}^{TPC} vs N_{clusters}^{SPD}_{Outer};N_{ch}^{TPC};N_{clusters}^{SPD}",
352 fTpcBinning,fTpcBinningMin,fTpcBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
353 }
354 // ----------------------------------------------------
355 // SPD vs VZERO
356 // ----------------------------------------------------
357 if ( fProcessSPD && fProcessVZERO ) {
358
359 fHistList->Add(new TH2F("fCorrVzeroSpd",
360 "Multiplicity^{VZERO} vs N_{ch}^{SPD};Multiplicity^{VZERO};N^{SPD}",
361 fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
362
363 fHistList->Add(new TH2F("fCorrVzeroSpdOuter",
364 "Multiplicity^{VZERO} vs N_{ch}^{SPD}_{Outer};Multiplicity^{VZERO};N^{SPD}",
365 fVzeroBinning,fVzeroBinningMin,fVzeroBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
366 }
367 // ----------------------------------------------------
368 // SPD vs ZDC
369 // ----------------------------------------------------
370 if ( fProcessSPD && fProcessZDC) {
371
372 // E_{ZDC} vs Multiplicity SPD
373 fHistList->Add(new TH2F("fCorrEzdcSpd", "E_{ZDC} vs N_{ch}^{SPD};E_{ZDC} (TeV);N^{SPD}",
374 fZdcBinning,fZdcBinningMin,fZdcBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
375
376 fHistList->Add(new TH2F("fCorrEzdcSpdOuter", "E_{ZDC} vs N_{ch}^{SPD};E_{ZDC} (TeV);N^{SPD}",
377 fZdcBinning,fZdcBinningMin,fZdcBinningMax, fSpdBinning,fSpdBinningMin,fSpdBinningMax));
378
379 }
380
381 return 0;
382}
383
384//##################################################################################
385Int_t AliMultiplicityCorrelations::SetupSPD() {
386 // see header file for class documentation
387
388 fHistList->Add(new TH1F("fSpdNClusters", "Multplicity_{SPD};Multplicity_{SPD};N_{Events}",
389 fSpdBinning,fSpdBinningMin,fSpdBinningMax));
390
391 fHistList->Add(new TH1F("fSpdNClustersInner", "Multplicity_{SPD} Layer 0;Multplicity_{SPD};N_{Events}",
392 fSpdBinning,fSpdBinningMin,fSpdBinningMax));
393
394 fHistList->Add(new TH1F("fSpdNClustersOuter", "Multplicity_{SPD} Layer 1;Multplicity_{SPD};N_{Events}",
395 fSpdBinning,fSpdBinningMin,fSpdBinningMax));
396 return 0;
397}
398
399/*
400 * ---------------------------------------------------------------------------------
401 * Process - private
402 * ---------------------------------------------------------------------------------
403 */
404
405//##################################################################################
406Int_t AliMultiplicityCorrelations::ProcessTPC() {
407 // see header file for class documentation
408
409 Int_t iResult = 0 ;
410
411 fEsdTracks = 0;
412 fEsdTracksA = 0;
413 fTpcTracks = 0;
414 fTpcTracksA = 0;
415
416 // -----------------------------------------------------------------
417
418 for (Int_t idx = 0; idx < fESDEvent->GetNumberOfTracks(); idx++) {
419
420 // -- check track
421 AliESDtrack* esdTrack = fESDEvent->GetTrack(idx);
422 if (!esdTrack) continue;
423
424 ++fEsdTracks;
425
426 if (!fESDTrackCuts2->AcceptTrack(esdTrack)) continue;
427 ++fEsdTracksA;
428 }
429
430 // -----------------------------------------------------------------
431
432 for (Int_t idx = 0; idx < fESDEvent->GetNumberOfTracks(); idx++) {
433
434 // -- check track
435 AliESDtrack* esdTrack = fESDEvent->GetTrack(idx);
436 if (!esdTrack) continue;
437
438 // -- TPC only
439 const AliExternalTrackParam *tpcTrack = esdTrack->GetTPCInnerParam();
440 if (!tpcTrack) continue;
441 ++fTpcTracks;
442
443 if (!fESDTrackCuts->AcceptTrack(esdTrack)) continue;
444 ++fTpcTracksA;
445 }
446
447 // -----------------------------------------------------------------
448
449 if (fCleanSample) {
450 if(fTpcTracksA < fCleanMinKeep || fTpcTracksA > fCleanMaxKeep)
451 return -2;
452 }
453
454 Float_t nESD = (Float_t) fEsdTracksA;
455 Float_t nTPC = (Float_t) fTpcTracksA;
456 Float_t ratio = -1;
457
458 if ( nESD != 0 )
459 ratio = nTPC/nESD;
460
461 (static_cast<TH2F*>(fHistList->FindObject("fTpcCorrNchAll")))->Fill(fTpcTracksA,fEsdTracksA);
462 (static_cast<TH1F*>(fHistList->FindObject("fTpcRatioNchAll")))->Fill(ratio);
463
464 // Cleaning Cut tpcTracks and globalTracks
465 if ( fEsdTracksA < (-39+0.5797*fTpcTracksA))
466 return -3;
467
468 (static_cast<TH1F*>(fHistList->FindObject("fTpcNch0")))->Fill(fEsdTracks);
469 (static_cast<TH1F*>(fHistList->FindObject("fTpcNch1")))->Fill(fEsdTracksA);
470 (static_cast<TH1F*>(fHistList->FindObject("fTpcNch2")))->Fill(fTpcTracks);
471 (static_cast<TH1F*>(fHistList->FindObject("fTpcNch3")))->Fill(fTpcTracksA);
472
473 (static_cast<TH2F*>(fHistList->FindObject("fTpcCorrNch")))->Fill(fTpcTracksA,fEsdTracksA);
474 (static_cast<TH1F*>(fHistList->FindObject("fTpcRatioNch")))->Fill(ratio);
475
476 return iResult;
477}
478
479//##################################################################################
480Int_t AliMultiplicityCorrelations::ProcessVZERO() {
481 // see header file for class documentation
482
483 Int_t iResult = 0 ;
484 Float_t vzeroCorr;;
485 fVzeroMultA = fESDVZERO->GetMTotV0A();
486 fVzeroMultC = fESDVZERO->GetMTotV0C();
487 if (!fIsMC)
488 fVzeroMult = GetCorrVZERO(vzeroCorr);
489 else
490 fVzeroMult = (fVzeroMultA+fVzeroMultC) * 0.85871;
491
492 (static_cast<TH1F*>(fHistList->FindObject("fVzeroMult")))->Fill(fVzeroMult);
493 (static_cast<TH1F*>(fHistList->FindObject("fVzeroMultUnCorr")))->Fill(fVzeroMultA+fVzeroMultC);
494 (static_cast<TH1F*>(fHistList->FindObject("fVzeroMultAC")))->Fill(fVzeroMultA,fVzeroMultC);
495
496 // -- VZERO - TPC correlations
497 if (fESDEvent->GetNumberOfTracks() > 0 && fProcessTPC) {
498 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroNch")))->Fill(fTpcTracksA,fVzeroMult);
499 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroNchUnCorr")))->Fill(fTpcTracksA,fVzeroMultA+fVzeroMultC);
500
501 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroESDNch")))->Fill(fEsdTracksA,fVzeroMult);
502 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroESDNchUnCorr")))->Fill(fEsdTracksA,fVzeroMultA+fVzeroMultC);
503 }
504
505 // -- VZERO - SPD correlations
506 if (fESDEvent->GetNumberOfTracks() > 0 && fProcessSPD) {
507 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroSpd")))->Fill(fVzeroMult, fSpdNClusters);
508 (static_cast<TH2F*>(fHistList->FindObject("fCorrVzeroSpdOuter")))->Fill(fVzeroMult, fSpdNClustersOuter);
509 }
510
511 return iResult;
512}
513
514//##################################################################################
515Int_t AliMultiplicityCorrelations::ProcessZDC() {
516 // see header file for class documentation
517
518 Int_t iResult = 0 ;
519
520 Double_t zdcEznA = fESDZDC->GetZDCN2Energy() / 8.;
521 Double_t zdcEznC = fESDZDC->GetZDCN1Energy() / 8.;
522 // Double_t zdcEznA = fESDZDC->GetZDCN2Energy() / 1000.;
523 // Double_t zdcEznC = fESDZDC->GetZDCN1Energy() / 1000.;
524
525 Double_t zdcEzpA = fESDZDC->GetZDCP2Energy() / 8.;
526 Double_t zdcEzpC = fESDZDC->GetZDCP1Energy() / 8.;
527 // Double_t zdcEzpA = fESDZDC->GetZDCP2Energy() / 1000.;
528 // Double_t zdcEzpC = fESDZDC->GetZDCP1Energy() / 1000.;
529
530 Double_t zdcEA = (zdcEznA + zdcEzpA);
531 Double_t zdcEC = (zdcEznC + zdcEzpC);
532 Double_t zdcE = zdcEA + zdcEC;
533
534 Double_t zdcEzemA = fESDZDC->GetZDCEMEnergy(1) / 8.;
535 Double_t zdcEzemC = fESDZDC->GetZDCEMEnergy(0) / 8.;
536 // Double_t zdcEzemA = fESDZDC->GetZDCEMEnergy(1) / 1000.;
537 // Double_t zdcEzemC = fESDZDC->GetZDCEMEnergy(0) / 1000.;
538 Double_t zdcEzem = zdcEzemA + zdcEzemC;
539
540 (static_cast<TH1F*>(fHistList->FindObject("fZdcEzdc")))->Fill(zdcE);
541
542 (static_cast<TH1F*>(fHistList->FindObject("fZdcEzem")))->Fill(zdcEzem);
543 (static_cast<TH2F*>(fHistList->FindObject("fZdcEzemEzdc")))->Fill(zdcEzem, zdcE);
544
545 // -- ZDC - TPC correlations
546 if (fESDEvent->GetNumberOfTracks() > 0 && fProcessTPC) {
547 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzdcNch")))->Fill(fTpcTracksA, zdcE);
548 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzemNch")))->Fill(fTpcTracksA, zdcEzem);
549 }
550
551 // -- ZDC - SPD correlations
552 if (fProcessSPD) {
553 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzdcSpd")))->Fill(zdcE, fSpdNClusters);
554 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzdcSpdOuter")))->Fill(zdcE, fSpdNClustersOuter);
555 }
556
557 // -- VZERO - ZDC correlations
558 if (fESDVZERO && fProcessVZERO) {
559 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzdcVzero")))->Fill(zdcE, fVzeroMult);
560 (static_cast<TH2F*>(fHistList->FindObject("fCorrEzemVzero")))->Fill(zdcEzem, fVzeroMult);
561 }
562
563 return iResult;
564}
565
566//##################################################################################
567Int_t AliMultiplicityCorrelations::ProcessSPD() {
568 // see header file for class documentation
569
570 const AliESDVertex* vtxESD = fESDEvent->GetPrimaryVertexSPD();
571 Float_t zvtx = vtxESD->GetZ();
572
573 if (!fIsMC) {
574 fSpdNClustersInner = GetCorrSPD2(fESDMultiplicity->GetNumberOfITSClusters(0),zvtx);
575 fSpdNClustersOuter = GetCorrSPD2(fESDMultiplicity->GetNumberOfITSClusters(1),zvtx);
576 }
577 else {
578 fSpdNClustersInner = fESDMultiplicity->GetNumberOfITSClusters(0);
579 fSpdNClustersOuter = fESDMultiplicity->GetNumberOfITSClusters(1);
580 }
581
582 fSpdNClusters = fSpdNClustersOuter + fSpdNClustersInner;
583
584 (static_cast<TH2F*>(fHistList->FindObject("fSpdNClusters")))->Fill(fSpdNClusters);
585 (static_cast<TH2F*>(fHistList->FindObject("fSpdNClustersInner")))->Fill(fSpdNClustersInner);
586 (static_cast<TH2F*>(fHistList->FindObject("fSpdNClustersOuter")))->Fill(fSpdNClustersOuter);
587
588 // -- SPD vs TPC correlations
589 if (fProcessTPC) {
590 (static_cast<TH2F*>(fHistList->FindObject("fCorrSpdTpcNch")))->Fill(fTpcTracksA, fSpdNClusters);
591 (static_cast<TH2F*>(fHistList->FindObject("fCorrSpdOuterTpcNch")))->Fill(fTpcTracksA, fSpdNClustersOuter);
592 }
593
594 return 0;
595}
596
597//##################################################################################
598Float_t AliMultiplicityCorrelations::GetCorrVZERO(Float_t &v0CorrResc) {
599 // correct V0 non-linearity, prepare a version rescaled to SPD2 corr
600
601 Double_t *par0;
602 Double_t *par1;
603 Double_t *par2;
604
f8b4d737 605 Double_t par0R137161[64] = { 6.71e-02 , 6.86e-02 , 7.06e-02 , 6.32e-02 ,
44a84424 606 5.91e-02 , 6.07e-02 , 5.78e-02 , 5.73e-02 , 5.91e-02 , 6.22e-02 ,
607 5.90e-02 , 6.11e-02 , 5.55e-02 , 5.29e-02 , 5.19e-02 , 5.56e-02 ,
608 6.25e-02 , 7.03e-02 , 5.64e-02 , 5.81e-02 , 4.57e-02 , 5.30e-02 ,
609 5.13e-02 , 6.43e-02 , 6.27e-02 , 6.48e-02 , 6.07e-02 , 1.01e-01 ,
610 6.68e-02 , 7.16e-02 , 6.36e-02 , 5.95e-02 , 2.52e-02 , 2.82e-02 ,
611 2.56e-02 , 2.86e-02 , 2.82e-02 , 2.10e-02 , 2.13e-02 , 2.32e-02 ,
612 2.75e-02 , 4.34e-02 , 3.78e-02 , 4.52e-02 , 4.11e-02 , 3.89e-02 ,
613 4.10e-02 , 3.73e-02 , 4.51e-02 , 5.07e-02 , 5.42e-02 , 4.74e-02 ,
614 4.33e-02 , 4.44e-02 , 4.64e-02 , 3.01e-02 , 6.38e-02 , 5.26e-02 ,
615 4.99e-02 , 5.26e-02 , 5.47e-02 , 3.84e-02 , 5.00e-02 , 5.20e-02 };
f8b4d737 616 Double_t par1R137161[64] = { -6.68e-05 , -7.78e-05 , -6.88e-05 , -5.92e-05 ,
44a84424 617 -2.43e-05 , -3.54e-05 , -2.91e-05 , -1.99e-05 , -1.40e-05 , -4.01e-05 ,
618 -2.29e-05 , -3.68e-05 , -2.53e-05 , -2.44e-06 , -9.22e-06 , -1.51e-05 ,
619 -2.80e-05 , -2.34e-05 , -1.72e-05 , -1.81e-05 , -1.29e-05 , -2.65e-05 ,
620 -1.61e-05 , -2.86e-05 , -1.74e-05 , -4.23e-05 , -3.41e-05 , -1.05e-04 ,
621 -2.76e-05 , -4.71e-05 , -3.06e-05 , -2.32e-05 , -1.55e-06 , 2.15e-05 ,
622 1.40e-05 , 2.16e-05 , 1.21e-05 , 3.05e-06 , 1.67e-05 , -3.84e-06 ,
623 3.09e-06 , 1.50e-05 , 3.47e-06 , 4.87e-06 , -3.71e-07 , -1.75e-06 ,
624 -1.80e-06 , 9.99e-06 , -6.46e-06 , -4.91e-06 , 1.33e-05 , -2.52e-07 ,
625 -3.85e-06 , 4.94e-06 , -2.48e-07 , -1.20e-05 , 2.07e-06 , 6.12e-06 ,
626 -1.18e-06 , 4.54e-06 , -1.54e-05 , -1.25e-05 , 1.46e-06 , -6.67e-06 };
f8b4d737 627 Double_t par2R137161[64] = { 1.29e-08 , 1.51e-08 , 1.43e-08 , 1.11e-08 ,
44a84424 628 5.04e-09 , 6.99e-09 , 5.58e-09 , 4.15e-09 , 4.00e-09 , 8.22e-09 ,
629 4.97e-09 , 7.66e-09 , 4.91e-09 , 1.10e-09 , 2.64e-09 , 3.64e-09 ,
630 5.76e-09 , 5.46e-09 , 3.38e-09 , 3.47e-09 , 2.43e-09 , 4.13e-09 ,
631 2.80e-09 , 5.80e-09 , 3.86e-09 , 7.46e-09 , 5.98e-09 , 2.58e-08 ,
632 5.50e-09 , 8.72e-09 , 5.23e-09 , 4.37e-09 , 2.33e-09 , -6.01e-10 ,
633 3.99e-11 , -2.02e-10 , 7.67e-10 , 2.03e-09 , 1.17e-10 , 2.56e-09 ,
634 1.16e-09 , -4.75e-10 , 1.28e-09 , 1.23e-09 , 1.62e-09 , 1.61e-09 ,
635 1.93e-09 , 2.97e-10 , 2.21e-09 , 2.16e-09 , 5.22e-10 , 1.03e-09 ,
636 1.56e-09 , 5.00e-10 , 1.01e-09 , 2.93e-09 , 1.05e-09 , 9.96e-11 ,
637 1.21e-09 , 7.45e-10 , 3.07e-09 , 2.31e-09 , 6.70e-10 , 1.89e-09 };
638
f8b4d737 639 Double_t par0R137366[64] = { 7.12e-02 , 7.34e-02 , 7.39e-02 , 6.54e-02 , 6.11e-02 , 6.31e-02 , 6.15e-02 ,
44a84424 640 6.00e-02 , 6.10e-02 , 6.49e-02 , 6.17e-02 , 6.33e-02 , 6.00e-02 , 5.48e-02 ,
641 5.44e-02 , 5.81e-02 , 6.49e-02 , 7.07e-02 , 5.91e-02 , 6.18e-02 , 4.82e-02 ,
642 5.67e-02 , 5.36e-02 , 6.60e-02 , 6.37e-02 , 6.78e-02 , 6.31e-02 , 1.04e-01 ,
643 6.91e-02 , 7.32e-02 , 6.61e-02 , 6.16e-02 , 2.64e-02 , 2.81e-02 , 2.64e-02 ,
644 2.85e-02 , 2.87e-02 , 2.18e-02 , 2.19e-02 , 2.43e-02 , 2.81e-02 , 4.37e-02 ,
645 3.90e-02 , 4.66e-02 , 4.24e-02 , 4.09e-02 , 4.21e-02 , 3.88e-02 , 4.83e-02 ,
646 5.23e-02 , 5.44e-02 , 4.85e-02 , 4.42e-02 , 4.58e-02 , 4.74e-02 , 3.14e-02 ,
647 6.31e-02 , 5.30e-02 , 5.01e-02 , 5.33e-02 , 5.70e-02 , 3.95e-02 , 4.98e-02 , 5.31e-02 };
f8b4d737 648 Double_t par1R137366[64] = { -6.99e-05 , -6.99e-05 , -6.94e-05 , -6.55e-05 , -3.55e-05 , -4.50e-05 ,
44a84424 649 -3.10e-05 , -2.81e-05 , -2.29e-05 , -3.89e-05 , -2.53e-05 , -4.25e-05 ,
650 -1.87e-05 , -2.01e-05 , -1.53e-05 , -2.14e-05 , -2.86e-05 , -4.70e-05 ,
651 -2.23e-05 , -3.30e-05 ,-9.74e-06 , -2.62e-05 , -1.76e-05 , -2.38e-05 ,
652 -2.40e-05 , -3.43e-05 , -2.75e-05 , -6.86e-05 ,-2.35e-05 , -4.45e-05 ,
653 -2.51e-05 , -2.20e-05 , -1.25e-16 , -2.04e-17 , -2.06e-17 , -3.74e-19 ,
654 -1.18e-18 , -2.02e-15 , -3.78e-06 , -1.26e-06 , -2.71e-06 , -6.23e-17 ,
655 -7.39e-08 , -1.76e-16 , -8.98e-06 , -4.10e-18 , -1.34e-05 , -1.06e-16 ,
656 -3.34e-06 , -1.04e-05 , -5.28e-06 , -7.34e-06 , -1.05e-05 , -7.68e-06 ,
657 -1.78e-05 , -1.19e-05 , -1.78e-05 , -1.34e-06 , -9.23e-06 , -3.34e-06 ,
658 -8.02e-06 , -1.39e-05 , -1.38e-05 , -1.40e-05 };
f8b4d737 659 Double_t par2R137366[64] = { 1.41e-08 , 1.47e-08 , 1.48e-08 , 1.24e-08 , 6.82e-09 , 8.73e-09 , 6.26e-09 ,
44a84424 660 5.53e-09 , 5.40e-09 , 7.93e-09 , 5.49e-09 , 8.77e-09 , 4.21e-09 , 3.93e-09 ,
661 3.60e-09 , 4.67e-09 , 5.59e-09 , 8.81e-09 , 3.89e-09 , 6.19e-09 , 1.97e-09 ,
662 4.38e-09 , 3.26e-09 , 5.00e-09 , 4.58e-09 , 6.39e-09 , 5.03e-09 , 1.30e-08 ,
663 4.95e-09 , 8.26e-09 , 4.57e-09 , 4.10e-09 , 2.35e-09 , 2.30e-09 , 2.15e-09 ,
664 2.27e-09 , 2.17e-09 , 2.27e-09 , 2.97e-09 , 2.25e-09 , 1.69e-09 , 1.44e-09 ,
665 1.66e-09 , 1.75e-09 , 2.88e-09 , 1.82e-09 , 3.64e-09 , 1.80e-09 , 1.71e-09 ,
666 2.66e-09 , 3.01e-09 , 1.95e-09 , 2.64e-09 , 2.42e-09 , 3.68e-09 , 2.66e-09 ,
667 3.92e-09 , 1.18e-09 , 2.26e-09 , 1.57e-09 , 2.02e-09 , 2.71e-09 , 2.99e-09 , 3.04e-09 };
668
669
670
671 if ( fRunNo == 137161 ) {
f8b4d737 672 par0=par0R137161;
673 par1=par1R137161;
674 par2=par2R137161;
44a84424 675 }
676 else {
f8b4d737 677 par0=par0R137366;
678 par1=par1R137366;
679 par2=par2R137366;
44a84424 680 }
681
682 Float_t multCorr = 0;
683 Float_t multCorr2 = 0;
684 Float_t multChCorr[64];
685
686 for(Int_t i = 0; i < 64; ++i) {
687 Double_t b = (fESDVZERO->GetMultiplicity(i)*par1[i]-par0[i]);
688 Double_t s = (b*b-4.*par2[i]*fESDVZERO->GetMultiplicity(i)*fESDVZERO->GetMultiplicity(i));
689 Double_t n;
690 if (s<0) {
691 printf("FPE %d %.2f %.2f %.2e\n",i,fESDVZERO->GetMultiplicity(i),b,(b*b-4.*par2[i]*fESDVZERO->GetMultiplicity(i)*fESDVZERO->GetMultiplicity(i)));
692 n = -b;
693 }
694 else {
695 n = (-b + TMath::Sqrt(s));
696 }
697 multChCorr[i] = 2.*fESDVZERO->GetMultiplicity(i)/n*par0[i];
698 multCorr += multChCorr[i];
699 multCorr2 += (multChCorr[i]/par0[i]/64.);
700 }
701 v0CorrResc = multCorr2;
702 return multCorr;
703}
704
705
706//##################################################################################
f8b4d737 707Float_t AliMultiplicityCorrelations::GetCorrSPD2(Float_t spd2raw,Float_t zv) const {
44a84424 708 // renormalize N spd2 clusters at given Zv to acceptance at Zv=0
709 const double pars[] = {8.10030e-01,-2.80364e-03,-7.19504e-04};
710 zv -= pars[0];
711 float corr = 1 + zv*(pars[1] + zv*pars[2]);
712 return corr>0 ? spd2raw/corr : -1;
713}