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d53b7b0b | 1 | |
471f69dc | 2 | /************************************************************************** |
3 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
d594b22e | 17 | /* |
18 | $Log$ | |
f8f69f71 | 19 | Revision 1.8 2002/01/21 16:05:31 morsch |
20 | - different phi-bin for hadron correction | |
21 | - provisions for background mixing. | |
22 | ||
ff114de3 | 23 | Revision 1.7 2002/01/21 15:47:18 morsch |
24 | Bending radius correctly in cm. | |
25 | ||
b3feface | 26 | Revision 1.6 2002/01/21 12:53:50 morsch |
27 | authors | |
28 | ||
0c207dbc | 29 | Revision 1.5 2002/01/21 12:47:47 morsch |
30 | Possibility to include K0long and neutrons. | |
31 | ||
d53b7b0b | 32 | Revision 1.4 2002/01/21 11:03:21 morsch |
33 | Phi propagation introduced in FillFromTracks. | |
34 | ||
26dadf3a | 35 | Revision 1.3 2002/01/18 05:07:56 morsch |
36 | - hadronic correction | |
37 | - filling of digits | |
38 | - track selection upon EMCAL information | |
39 | ||
d594b22e | 40 | */ |
41 | ||
0c207dbc | 42 | //*-- Authors: Andreas Morsch (CERN) |
43 | //* J.L. Klay (LBL) | |
44 | //* Aleksei Pavlinov (WSU) | |
45 | ||
d594b22e | 46 | // From root ... |
471f69dc | 47 | #include <TClonesArray.h> |
48 | #include <TTree.h> | |
d594b22e | 49 | #include <TBranchElement.h> |
471f69dc | 50 | #include <TFile.h> |
51 | #include <TH2.h> | |
52 | #include <TAxis.h> | |
53 | #include <TParticle.h> | |
54 | #include <TParticlePDG.h> | |
d594b22e | 55 | |
56 | // From AliRoot ... | |
471f69dc | 57 | #include "AliEMCALJetFinder.h" |
d594b22e | 58 | #include "AliEMCALFast.h" |
471f69dc | 59 | #include "AliEMCALGeometry.h" |
60 | #include "AliEMCALHit.h" | |
d594b22e | 61 | #include "AliEMCALDigit.h" |
62 | #include "AliEMCALDigitizer.h" | |
63 | #include "AliEMCALHadronCorrection.h" | |
471f69dc | 64 | #include "AliRun.h" |
26dadf3a | 65 | #include "AliMagF.h" |
66 | #include "AliMagFCM.h" | |
471f69dc | 67 | #include "AliEMCAL.h" |
68 | #include "AliHeader.h" | |
d53b7b0b | 69 | #include "AliPDG.h" |
471f69dc | 70 | |
ff114de3 | 71 | // Interface to FORTRAN |
72 | #include "Ecommon.h" | |
73 | ||
74 | ||
471f69dc | 75 | ClassImp(AliEMCALJetFinder) |
76 | ||
77 | //____________________________________________________________________________ | |
78 | AliEMCALJetFinder::AliEMCALJetFinder() | |
79 | { | |
80 | // Default constructor | |
d594b22e | 81 | fJets = 0; |
82 | fNjets = 0; | |
83 | fLego = 0; | |
ff114de3 | 84 | fLegoB = 0; |
d594b22e | 85 | fTrackList = 0; |
86 | fPtT = 0; | |
87 | fEtaT = 0; | |
88 | fPhiT = 0; | |
ff114de3 | 89 | fPtB = 0; |
90 | fEtaB = 0; | |
91 | fPhiB = 0; | |
d594b22e | 92 | fHadronCorrector = 0; |
471f69dc | 93 | } |
94 | ||
95 | AliEMCALJetFinder::AliEMCALJetFinder(const char* name, const char *title) | |
96 | : TTask(name, title) | |
97 | { | |
98 | // Constructor | |
99 | fJets = new TClonesArray("AliEMCALJet",10000); | |
100 | fNjets = 0; | |
d594b22e | 101 | for (Int_t i = 0; i < 30000; i++) |
471f69dc | 102 | { |
103 | fEtCell[i] = 0.; | |
104 | fEtaCell[i] = 0.; | |
105 | fPhiCell[i] = 0.; | |
106 | } | |
107 | fLego = 0; | |
ff114de3 | 108 | fTrackList = 0; |
109 | fPtT = 0; | |
110 | fEtaT = 0; | |
111 | fPhiT = 0; | |
112 | fPtB = 0; | |
113 | fEtaB = 0; | |
114 | fPhiB = 0; | |
d594b22e | 115 | fHadronCorrector = 0; |
ff114de3 | 116 | fBackground = 0; |
0c207dbc | 117 | // |
d594b22e | 118 | SetPtCut(); |
119 | SetMomentumSmearing(); | |
120 | SetEfficiencySim(); | |
121 | SetDebug(); | |
122 | SetHadronCorrection(); | |
123 | SetSamplingFraction(); | |
d53b7b0b | 124 | SetIncludeK0andN(); |
471f69dc | 125 | } |
126 | ||
127 | ||
128 | ||
129 | ||
130 | //____________________________________________________________________________ | |
131 | AliEMCALJetFinder::~AliEMCALJetFinder() | |
132 | { | |
133 | // Destructor | |
134 | // | |
135 | if (fJets){ | |
136 | fJets->Delete(); | |
137 | delete fJets; | |
138 | } | |
139 | } | |
140 | ||
141 | ||
142 | ||
3bc109a9 | 143 | |
471f69dc | 144 | #ifndef WIN32 |
145 | # define jet_finder_ua1 jet_finder_ua1_ | |
146 | # define hf1 hf1_ | |
147 | # define type_of_call | |
148 | ||
149 | #else | |
150 | # define jet_finder_ua1 J | |
151 | # define hf1 HF1 | |
152 | # define type_of_call _stdcall | |
153 | #endif | |
154 | ||
155 | extern "C" void type_of_call | |
156 | jet_finder_ua1(Int_t& ncell, Int_t& ncell_tot, | |
157 | Float_t etc[30000], Float_t etac[30000], | |
158 | Float_t phic[30000], | |
159 | Float_t& min_move, Float_t& max_move, Int_t& mode, | |
160 | Float_t& prec_bg, Int_t& ierror); | |
161 | ||
162 | extern "C" void type_of_call hf1(Int_t& id, Float_t& x, Float_t& wgt); | |
163 | ||
164 | ||
165 | ||
166 | ||
167 | ||
168 | void AliEMCALJetFinder::Find(Int_t ncell, Int_t ncell_tot, Float_t etc[30000], | |
169 | Float_t etac[30000], Float_t phic[30000], | |
170 | Float_t min_move, Float_t max_move, Int_t mode, | |
171 | Float_t prec_bg, Int_t ierror) | |
172 | { | |
173 | // Wrapper for fortran coded jet finder | |
174 | // Full argument list | |
175 | jet_finder_ua1(ncell, ncell_tot, etc, etac, phic, | |
176 | min_move, max_move, mode, prec_bg, ierror); | |
177 | // Write result to output | |
178 | WriteJets(); | |
179 | } | |
180 | ||
181 | void AliEMCALJetFinder::Find() | |
182 | { | |
183 | // Wrapper for fortran coded jet finder using member data for | |
184 | // argument list | |
185 | ||
186 | Float_t min_move = 0; | |
187 | Float_t max_move = 0; | |
188 | Int_t mode = 0; | |
189 | Float_t prec_bg = 0.; | |
190 | Int_t ierror = 0; | |
191 | ||
192 | jet_finder_ua1(fNcell, fNtot, fEtCell, fEtaCell, fPhiCell, | |
193 | min_move, max_move, mode, prec_bg, ierror); | |
194 | // Write result to output | |
3bc109a9 | 195 | Int_t njet = Njets(); |
d594b22e | 196 | |
3bc109a9 | 197 | for (Int_t nj=0; nj<njet; nj++) |
198 | { | |
d594b22e | 199 | |
200 | ||
3bc109a9 | 201 | fJetT[nj] = new AliEMCALJet(JetEnergy(nj), |
202 | JetPhiW(nj), | |
203 | JetEtaW(nj)); | |
204 | } | |
205 | FindTracksInJetCone(); | |
471f69dc | 206 | WriteJets(); |
207 | } | |
208 | ||
209 | ||
210 | Int_t AliEMCALJetFinder::Njets() | |
211 | { | |
212 | // Get number of reconstructed jets | |
213 | return EMCALJETS.njet; | |
214 | } | |
215 | ||
216 | Float_t AliEMCALJetFinder::JetEnergy(Int_t i) | |
217 | { | |
218 | // Get reconstructed jet energy | |
219 | return EMCALJETS.etj[i]; | |
220 | } | |
221 | ||
222 | Float_t AliEMCALJetFinder::JetPhiL(Int_t i) | |
223 | { | |
224 | // Get reconstructed jet phi from leading particle | |
225 | return EMCALJETS.phij[0][i]; | |
226 | } | |
227 | ||
228 | Float_t AliEMCALJetFinder::JetPhiW(Int_t i) | |
229 | { | |
230 | // Get reconstructed jet phi from weighting | |
231 | return EMCALJETS.phij[1][i]; | |
232 | } | |
233 | ||
234 | Float_t AliEMCALJetFinder::JetEtaL(Int_t i) | |
235 | { | |
236 | // Get reconstructed jet eta from leading particles | |
237 | return EMCALJETS.etaj[0][i]; | |
238 | } | |
239 | ||
240 | ||
241 | Float_t AliEMCALJetFinder::JetEtaW(Int_t i) | |
242 | { | |
243 | // Get reconstructed jet eta from weighting | |
244 | return EMCALJETS.etaj[1][i]; | |
245 | } | |
246 | ||
247 | void AliEMCALJetFinder::SetCellSize(Float_t eta, Float_t phi) | |
248 | { | |
249 | // Set grid cell size | |
250 | EMCALCELLGEO.etaCellSize = eta; | |
251 | EMCALCELLGEO.phiCellSize = phi; | |
d594b22e | 252 | fDeta = eta; |
253 | fDphi = phi; | |
471f69dc | 254 | } |
255 | ||
256 | void AliEMCALJetFinder::SetConeRadius(Float_t par) | |
257 | { | |
258 | // Set jet cone radius | |
259 | EMCALJETPARAM.coneRad = par; | |
3bc109a9 | 260 | fConeRadius = par; |
471f69dc | 261 | } |
262 | ||
263 | void AliEMCALJetFinder::SetEtSeed(Float_t par) | |
264 | { | |
265 | // Set et cut for seeds | |
266 | EMCALJETPARAM.etSeed = par; | |
d594b22e | 267 | fEtSeed = par; |
471f69dc | 268 | } |
269 | ||
270 | void AliEMCALJetFinder::SetMinJetEt(Float_t par) | |
271 | { | |
272 | // Set minimum jet et | |
273 | EMCALJETPARAM.ejMin = par; | |
d594b22e | 274 | fMinJetEt = par; |
471f69dc | 275 | } |
276 | ||
277 | void AliEMCALJetFinder::SetMinCellEt(Float_t par) | |
278 | { | |
279 | // Set et cut per cell | |
280 | EMCALJETPARAM.etMin = par; | |
d594b22e | 281 | fMinCellEt = par; |
471f69dc | 282 | } |
283 | ||
3bc109a9 | 284 | void AliEMCALJetFinder::SetPtCut(Float_t par) |
285 | { | |
286 | // Set pT cut on charged tracks | |
287 | fPtCut = par; | |
288 | } | |
289 | ||
471f69dc | 290 | |
291 | void AliEMCALJetFinder::Test() | |
292 | { | |
293 | // | |
294 | // Test the finder call | |
295 | // | |
296 | const Int_t nmax = 30000; | |
297 | Int_t ncell = 10; | |
298 | Int_t ncell_tot = 100; | |
299 | ||
300 | Float_t etc[nmax]; | |
301 | Float_t etac[nmax]; | |
302 | Float_t phic[nmax]; | |
303 | Float_t min_move = 0; | |
304 | Float_t max_move = 0; | |
305 | Int_t mode = 0; | |
306 | Float_t prec_bg = 0; | |
307 | Int_t ierror = 0; | |
308 | ||
309 | ||
310 | Find(ncell, ncell_tot, etc, etac, phic, | |
311 | min_move, max_move, mode, prec_bg, ierror); | |
312 | ||
313 | } | |
314 | ||
315 | // | |
316 | // I/O | |
317 | // | |
318 | ||
319 | void AliEMCALJetFinder::AddJet(const AliEMCALJet& jet) | |
320 | { | |
321 | // | |
322 | // Add a jet | |
323 | // | |
324 | TClonesArray &lrawcl = *fJets; | |
325 | new(lrawcl[fNjets++]) AliEMCALJet(jet); | |
326 | } | |
327 | ||
328 | void AliEMCALJetFinder::ResetJets() | |
329 | { | |
330 | // | |
331 | // Reset Jet List | |
332 | // | |
333 | fJets->Clear(); | |
334 | fNjets = 0; | |
335 | } | |
336 | ||
337 | void AliEMCALJetFinder::WriteJets() | |
338 | { | |
339 | // | |
340 | // Add all jets to the list | |
341 | // | |
342 | const Int_t kBufferSize = 4000; | |
343 | TTree *pK = gAlice->TreeK(); | |
344 | const char* file = (pK->GetCurrentFile())->GetName(); | |
345 | // I/O | |
346 | AliEMCAL* pEMCAL = (AliEMCAL* )gAlice->GetModule("EMCAL"); | |
d594b22e | 347 | |
348 | if (fDebug > 1) | |
471f69dc | 349 | printf("Make Branch - TreeR address %p %p\n",gAlice->TreeR(), pEMCAL); |
d594b22e | 350 | |
471f69dc | 351 | if (fJets && gAlice->TreeR()) { |
352 | pEMCAL->MakeBranchInTree(gAlice->TreeR(), | |
d594b22e | 353 | "EMCALJets", |
471f69dc | 354 | &fJets, |
355 | kBufferSize, | |
356 | file); | |
357 | } | |
358 | Int_t njet = Njets(); | |
3bc109a9 | 359 | for (Int_t nj = 0; nj < njet; nj++) |
471f69dc | 360 | { |
3bc109a9 | 361 | AddJet(*fJetT[nj]); |
362 | delete fJetT[nj]; | |
471f69dc | 363 | } |
3bc109a9 | 364 | |
471f69dc | 365 | Int_t nev = gAlice->GetHeader()->GetEvent(); |
366 | gAlice->TreeR()->Fill(); | |
367 | char hname[30]; | |
368 | sprintf(hname,"TreeR%d", nev); | |
369 | gAlice->TreeR()->Write(hname); | |
370 | gAlice->TreeR()->Reset(); | |
371 | ResetJets(); | |
372 | } | |
373 | ||
374 | void AliEMCALJetFinder::BookLego() | |
375 | { | |
376 | // | |
377 | // Book histo for discretisation | |
378 | // | |
379 | // | |
380 | // Get geometry parameters from | |
381 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
382 | AliEMCALGeometry* geom = | |
383 | AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), ""); | |
384 | fNbinEta = geom->GetNZ(); | |
385 | fNbinPhi = geom->GetNPhi(); | |
386 | const Float_t phiMin = geom->GetArm1PhiMin()*TMath::Pi()/180.; | |
387 | const Float_t phiMax = geom->GetArm1PhiMax()*TMath::Pi()/180.; | |
388 | fDphi = (phiMax-phiMin)/fNbinEta; | |
389 | fDeta = 1.4/fNbinEta; | |
390 | fNtot = fNbinPhi*fNbinEta; | |
391 | ||
392 | // | |
393 | fLego = new TH2F("legoH","eta-phi", | |
394 | fNbinEta, -0.7, 0.7, | |
395 | fNbinPhi, phiMin, phiMax); | |
396 | } | |
397 | ||
398 | void AliEMCALJetFinder::DumpLego() | |
399 | { | |
400 | // | |
401 | // Dump lego histo into array | |
402 | // | |
403 | fNcell = 0; | |
404 | for (Int_t i = 1; i < fNbinEta; i++) { | |
405 | for (Int_t j = 1; j < fNbinPhi; j++) { | |
406 | Float_t e = fLego->GetBinContent(i,j); | |
407 | TAxis* Xaxis = fLego->GetXaxis(); | |
408 | TAxis* Yaxis = fLego->GetYaxis(); | |
409 | Float_t eta = Xaxis->GetBinCenter(i); | |
410 | Float_t phi = Yaxis->GetBinCenter(j); | |
411 | fEtCell[fNcell] = e; | |
412 | fEtaCell[fNcell] = eta; | |
413 | fPhiCell[fNcell] = phi; | |
414 | fNcell++; | |
415 | } // phi | |
416 | } // eta | |
417 | fNcell--; | |
418 | } | |
419 | ||
420 | void AliEMCALJetFinder::ResetMap() | |
421 | { | |
422 | // | |
423 | // Reset eta-phi array | |
424 | ||
425 | for (Int_t i=0; i<30000; i++) | |
426 | { | |
427 | fEtCell[i] = 0.; | |
428 | fEtaCell[i] = 0.; | |
429 | fPhiCell[i] = 0.; | |
430 | } | |
431 | } | |
432 | ||
433 | ||
434 | void AliEMCALJetFinder::FillFromTracks(Int_t flag, Int_t ich) | |
435 | { | |
436 | // | |
d594b22e | 437 | // Fill Cells with track information |
471f69dc | 438 | // |
439 | // | |
440 | ResetMap(); | |
441 | ||
442 | if (!fLego) BookLego(); | |
443 | // Reset | |
444 | if (flag == 0) fLego->Reset(); | |
445 | // | |
446 | // Access particle information | |
447 | Int_t npart = (gAlice->GetHeader())->GetNprimary(); | |
3bc109a9 | 448 | // Create track list |
449 | // | |
450 | // 0: not selected | |
451 | // 1: selected for jet finding | |
452 | // 2: inside jet | |
453 | // .... | |
454 | if (fTrackList) delete[] fTrackList; | |
455 | if (fPtT) delete[] fPtT; | |
456 | if (fEtaT) delete[] fEtaT; | |
457 | if (fPhiT) delete[] fPhiT; | |
458 | ||
459 | fTrackList = new Int_t [npart]; | |
460 | fPtT = new Float_t[npart]; | |
461 | fEtaT = new Float_t[npart]; | |
462 | fPhiT = new Float_t[npart]; | |
ff114de3 | 463 | |
3bc109a9 | 464 | fNt = npart; |
ff114de3 | 465 | fNtS = 0; |
466 | ||
d594b22e | 467 | for (Int_t part = 2; part < npart; part++) { |
471f69dc | 468 | TParticle *MPart = gAlice->Particle(part); |
469 | Int_t mpart = MPart->GetPdgCode(); | |
470 | Int_t child1 = MPart->GetFirstDaughter(); | |
471 | Float_t pT = MPart->Pt(); | |
d594b22e | 472 | Float_t p = MPart->P(); |
471f69dc | 473 | Float_t phi = MPart->Phi(); |
3bc109a9 | 474 | Float_t eta = MPart->Eta(); |
d594b22e | 475 | |
476 | if (fDebug > 0) { | |
477 | if (part == 6 || part == 7) | |
478 | { | |
479 | printf("\n Simulated Jet (pt, eta, phi): %d %f %f %f", | |
480 | part-5, pT, eta, phi); | |
481 | } | |
482 | ||
483 | // if (mpart == 21) | |
484 | ||
485 | // printf("\n Simulated Jet (pt, eta, phi): %d %d %f %f %f", | |
486 | // part, mpart, pT, eta, phi); | |
487 | } | |
488 | ||
3bc109a9 | 489 | |
490 | fTrackList[part] = 0; | |
491 | fPtT[part] = pT; | |
492 | fEtaT[part] = eta; | |
493 | fPhiT[part] = phi; | |
494 | ||
495 | if (part < 2) continue; | |
496 | if (pT == 0 || pT < fPtCut) continue; | |
26dadf3a | 497 | TParticlePDG* pdgP = 0; |
471f69dc | 498 | // charged or neutral |
499 | if (ich == 0) { | |
26dadf3a | 500 | pdgP = MPart->GetPDG(); |
d53b7b0b | 501 | if (pdgP->Charge() == 0) { |
502 | if (!fK0N) { | |
503 | continue; | |
504 | } else { | |
505 | if (mpart != kNeutron && | |
506 | mpart != kNeutronBar && | |
507 | mpart != kK0Long) continue; | |
508 | } | |
509 | } | |
471f69dc | 510 | } |
511 | // skip partons | |
512 | if (TMath::Abs(mpart) <= 6 || | |
513 | mpart == 21 || | |
514 | mpart == 92) continue; | |
515 | // acceptance cut | |
516 | if (TMath::Abs(eta) > 0.7) continue; | |
517 | if (phi*180./TMath::Pi() > 120.) continue; | |
518 | // final state only | |
519 | if (child1 >= 0 && child1 < npart) continue; | |
d594b22e | 520 | // |
521 | if (fDebug > 1) | |
522 | printf("\n sel:%5d %5d %5d %8.2f %8.2f %8.2f", | |
523 | part, mpart, child1, eta, phi, pT); | |
524 | // | |
26dadf3a | 525 | // |
ff114de3 | 526 | // phi propagation for hadronic correction |
26dadf3a | 527 | |
528 | Bool_t curls = kFALSE; | |
529 | Float_t dphi = PropagatePhi(pT, pdgP->Charge(), curls); | |
ff114de3 | 530 | if (fDebug) printf("\n Delta phi %f pT%f", dphi, pT); |
531 | if (curls && fDebug) printf("\n Track is curling %f", pT); | |
532 | Float_t phiHC = phi + dphi; | |
26dadf3a | 533 | // |
d594b22e | 534 | // Momentum smearing goes here ... |
535 | // | |
536 | if (fSmear) { | |
537 | p = AliEMCALFast::SmearMomentum(1,p); | |
538 | } | |
539 | // | |
540 | // Tracking Efficiency and TPC acceptance goes here ... | |
541 | if (fEffic) { | |
542 | Float_t eff = AliEMCALFast::Efficiency(1,p); | |
543 | if (AliEMCALFast::RandomReject(eff)) continue; | |
544 | } | |
545 | // | |
546 | // Correction of Hadronic Energy goes here ... | |
547 | // | |
ff114de3 | 548 | Float_t dpH = 0.; |
549 | ||
d594b22e | 550 | if (fHCorrection) { |
551 | if (!fHadronCorrector) | |
552 | Fatal("AliEMCALJetFinder", | |
553 | "Hadronic energy correction required but not defined !"); | |
ff114de3 | 554 | dpH = fHadronCorrector->GetEnergy(p, eta, 7); |
d594b22e | 555 | } |
556 | // | |
557 | // More to do ? Just think about it ! | |
558 | // | |
3bc109a9 | 559 | fTrackList[part] = 1; |
ff114de3 | 560 | // |
561 | fNtS++; | |
562 | ||
d594b22e | 563 | fLego->Fill(eta, phi, p); |
ff114de3 | 564 | if (fHCorrection) fLego->Fill(eta, phiHC, dpH); |
471f69dc | 565 | } // primary loop |
566 | DumpLego(); | |
567 | } | |
568 | ||
569 | void AliEMCALJetFinder::FillFromHits(Int_t flag) | |
570 | { | |
571 | // | |
d594b22e | 572 | // Fill Cells with hit information |
471f69dc | 573 | // |
574 | // | |
575 | ResetMap(); | |
576 | ||
577 | if (!fLego) BookLego(); | |
ff114de3 | 578 | // Reset eta-phi map if needed |
579 | if (flag == 0) fLego->Reset(); | |
580 | // Initialize from background event if available | |
581 | if (fBackground) InitFromBackground(); | |
582 | ||
471f69dc | 583 | |
584 | // | |
585 | // Access hit information | |
586 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
471f69dc | 587 | |
588 | TTree *treeH = gAlice->TreeH(); | |
589 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
590 | // | |
591 | // Loop over tracks | |
592 | // | |
593 | Int_t nbytes = 0; | |
594 | ||
595 | ||
596 | for (Int_t track=0; track<ntracks;track++) { | |
597 | gAlice->ResetHits(); | |
598 | nbytes += treeH->GetEvent(track); | |
599 | // | |
600 | // Loop over hits | |
601 | // | |
602 | for(AliEMCALHit* mHit=(AliEMCALHit*) pEMCAL->FirstHit(-1); | |
603 | mHit; | |
604 | mHit=(AliEMCALHit*) pEMCAL->NextHit()) | |
605 | { | |
606 | Float_t x = mHit->X(); // x-pos of hit | |
607 | Float_t y = mHit->Y(); // y-pos | |
608 | Float_t z = mHit->Z(); // z-pos | |
609 | Float_t eloss = mHit->GetEnergy(); // deposited energy | |
d594b22e | 610 | |
611 | Float_t r = TMath::Sqrt(x*x+y*y); | |
612 | Float_t theta = TMath::ATan2(r,z); | |
613 | Float_t eta = -TMath::Log(TMath::Tan(theta/2.)); | |
614 | Float_t phi = TMath::ATan2(y,x); | |
615 | fLego->Fill(eta, phi, fSamplingF*eloss); | |
471f69dc | 616 | } // Hit Loop |
617 | } // Track Loop | |
618 | DumpLego(); | |
619 | } | |
620 | ||
d594b22e | 621 | void AliEMCALJetFinder::FillFromDigits(Int_t flag) |
622 | { | |
623 | // | |
624 | // Fill Cells with digit information | |
625 | // | |
626 | // | |
627 | ResetMap(); | |
628 | ||
629 | if (!fLego) BookLego(); | |
630 | if (flag == 0) fLego->Reset(); | |
631 | Int_t nbytes; | |
632 | ||
633 | ||
634 | // | |
635 | // Connect digits | |
636 | // | |
637 | TClonesArray* digs = new TClonesArray("AliEMCALDigit", 10000); | |
638 | TTree *treeD = gAlice->TreeD(); | |
639 | TBranchElement* branchDg = (TBranchElement*) | |
640 | treeD->GetBranch("EMCAL"); | |
641 | ||
642 | if (!branchDg) Fatal("AliEMCALJetFinder", | |
643 | "Reading digits requested but no digits in file !"); | |
644 | ||
645 | branchDg->SetAddress(&digs); | |
646 | Int_t nent = (Int_t) branchDg->GetEntries(); | |
647 | // | |
648 | // Connect digitizer | |
649 | // | |
650 | AliEMCALDigitizer* digr = new AliEMCALDigitizer(); | |
651 | TBranchElement* branchDr = (TBranchElement*) | |
652 | treeD->GetBranch("AliEMCALDigitizer"); | |
653 | branchDr->SetAddress(&digr); | |
654 | // | |
655 | // | |
656 | nbytes += branchDg->GetEntry(0); | |
657 | nbytes += branchDr->GetEntry(0); | |
658 | // | |
659 | // Get digitizer parameters | |
660 | Float_t towerADCped = digr->GetTowerpedestal(); | |
661 | Float_t towerADCcha = digr->GetTowerchannel(); | |
662 | Float_t preshoADCped = digr->GetPreShopedestal(); | |
663 | Float_t preshoADCcha = digr->GetPreShochannel(); | |
664 | ||
665 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
666 | AliEMCALGeometry* geom = | |
667 | AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), ""); | |
668 | ||
669 | if (fDebug) { | |
670 | Int_t ndig = digs->GetEntries(); | |
671 | printf("\n Number of Digits: %d %d\n", ndig, nent); | |
672 | printf("\n Parameters: %f %f %f %f\n", | |
673 | towerADCped, towerADCcha, preshoADCped, preshoADCcha ); | |
674 | printf("\n Geometry: %d %d\n", geom->GetNEta(), geom->GetNPhi()); | |
675 | } | |
676 | ||
677 | // | |
678 | // Loop over digits | |
679 | AliEMCALDigit* sdg; | |
680 | TIter next(digs); | |
681 | while ((sdg = (AliEMCALDigit*)(next()))) | |
682 | { | |
683 | Double_t pedestal; | |
684 | Double_t channel; | |
685 | if (sdg->GetId() > (geom->GetNZ() * geom->GetNPhi())) | |
686 | { | |
687 | pedestal = preshoADCped; | |
688 | channel = preshoADCcha; | |
689 | } else { | |
690 | pedestal = towerADCped; | |
691 | channel = towerADCcha; | |
692 | } | |
693 | ||
694 | Float_t eta = sdg->GetEta(); | |
695 | Float_t phi = sdg->GetPhi() * TMath::Pi()/180.; | |
696 | Float_t amp = (Float_t) (channel*(sdg->GetAmp())-pedestal); | |
697 | ||
698 | if (fDebug > 1) printf("\n Digit: eta %8.3f phi %8.3f amp %8.3f %8d", | |
699 | eta, phi, amp, sdg->GetAmp()); | |
700 | ||
701 | fLego->Fill(eta, phi, fSamplingF*amp); | |
702 | } // digit loop | |
703 | // | |
704 | // Dump lego hist | |
705 | DumpLego(); | |
706 | } | |
707 | ||
708 | ||
709 | void AliEMCALJetFinder::FillFromHitFlaggedTracks(Int_t flag) | |
710 | { | |
711 | // | |
712 | // Fill Cells with hit information | |
713 | // | |
714 | // | |
715 | ResetMap(); | |
716 | ||
717 | if (!fLego) BookLego(); | |
718 | // Reset | |
719 | if (flag == 0) fLego->Reset(); | |
720 | ||
ff114de3 | 721 | // Flag charged tracks passing through TPC which |
722 | // are associated to EMCAL Hits | |
d594b22e | 723 | BuildTrackFlagTable(); |
724 | ||
725 | // | |
726 | // Access particle information | |
727 | TTree *treeH = gAlice->TreeH(); | |
728 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
729 | ||
ff114de3 | 730 | if (fPtT) delete[] fPtT; |
731 | if (fEtaT) delete[] fEtaT; | |
732 | if (fPhiT) delete[] fPhiT; | |
733 | ||
d594b22e | 734 | fPtT = new Float_t[ntracks]; |
735 | fEtaT = new Float_t[ntracks]; | |
736 | fPhiT = new Float_t[ntracks]; | |
d594b22e | 737 | |
ff114de3 | 738 | fNt = ntracks; |
739 | fNtS = 0; | |
740 | ||
d594b22e | 741 | for (Int_t track = 0; track < ntracks; track++) { |
742 | TParticle *MPart = gAlice->Particle(track); | |
743 | Float_t pT = MPart->Pt(); | |
744 | Float_t phi = MPart->Phi(); | |
745 | Float_t eta = MPart->Eta(); | |
746 | ||
747 | if(fTrackList[track]) { | |
748 | fPtT[track] = pT; | |
749 | fEtaT[track] = eta; | |
750 | fPhiT[track] = phi; | |
751 | ||
752 | if (track < 2) continue; //Colliding particles? | |
753 | if (pT == 0 || pT < fPtCut) continue; | |
ff114de3 | 754 | fNtS++; |
d594b22e | 755 | fLego->Fill(eta, phi, pT); |
756 | } | |
757 | } // track loop | |
758 | DumpLego(); | |
759 | } | |
760 | ||
761 | void AliEMCALJetFinder::BuildTrackFlagTable() { | |
762 | ||
763 | // Method to generate a lookup table for TreeK particles | |
764 | // which are linked to hits in the EMCAL | |
765 | // | |
766 | // --Author: J.L. Klay | |
767 | // | |
768 | printf("\n Building track flag table.\n"); | |
769 | ||
770 | ||
771 | // Access hit information | |
772 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
773 | ||
774 | TTree *TK = gAlice->TreeK(); // Get the number of entries in the kine tree | |
775 | Int_t nKTrks = (Int_t) TK->GetEntries(); // (Number of particles created somewhere) | |
776 | ||
777 | if(fTrackList) delete[] fTrackList; //Make sure we get rid of the old one | |
778 | fTrackList = new Int_t[nKTrks]; //before generating a new one | |
779 | ||
780 | for (Int_t i = 0; i < nKTrks; i++) { //Initialize members to 0 | |
781 | fTrackList[i] = 0; | |
782 | } | |
783 | ||
784 | TTree *treeH = gAlice->TreeH(); | |
785 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
786 | // | |
787 | // Loop over tracks | |
788 | // | |
789 | Int_t nbytes = 0; | |
790 | ||
791 | for (Int_t track=0; track<ntracks;track++) { | |
792 | gAlice->ResetHits(); | |
793 | nbytes += treeH->GetEvent(track); | |
794 | if (pEMCAL) { | |
795 | ||
796 | // | |
797 | // Loop over hits | |
798 | // | |
799 | for(AliEMCALHit* mHit=(AliEMCALHit*) pEMCAL->FirstHit(-1); | |
800 | mHit; | |
801 | mHit=(AliEMCALHit*) pEMCAL->NextHit()) | |
802 | { | |
803 | Int_t iTrk = mHit->Track(); // track number | |
804 | Int_t idprim = mHit->GetPrimary(); // primary particle | |
805 | ||
806 | //Determine the origin point of this particle - it made a hit in the EMCAL | |
807 | TParticle *trkPart = gAlice->Particle(iTrk); | |
808 | TParticlePDG *trkPdg = trkPart->GetPDG(); | |
809 | Int_t trkCode = trkPart->GetPdgCode(); | |
810 | Double_t trkChg; | |
811 | if (trkCode < 10000) { //Big Ions cause problems for | |
812 | trkChg = trkPdg->Charge(); //this function. Since they aren't | |
813 | } else { //likely to make it very far, set | |
814 | trkChg = 0.0; //their charge to 0 for the Flag test | |
815 | } | |
816 | Float_t vxTrk = trkPart->Vx(); | |
817 | Float_t vyTrk = trkPart->Vy(); | |
818 | Float_t vrTrk = TMath::Sqrt(vxTrk*vxTrk+vyTrk*vyTrk); | |
819 | fTrackList[iTrk] = SetTrackFlag(vrTrk,trkCode,trkChg); | |
820 | ||
821 | //Loop through the ancestry of the EMCAL entrance particles | |
822 | Int_t ancestor = trkPart->GetFirstMother(); //Get track's Mother | |
823 | while (ancestor != -1) { | |
824 | TParticle *ancPart = gAlice->Particle(ancestor); //get particle info on ancestor | |
825 | TParticlePDG *ancPdg = ancPart->GetPDG(); | |
826 | Int_t ancCode = ancPart->GetPdgCode(); | |
827 | Double_t ancChg; | |
828 | if (ancCode < 10000) { | |
829 | ancChg = ancPdg->Charge(); | |
830 | } else { | |
831 | ancChg = 0.0; | |
832 | } | |
833 | Float_t vxAnc = ancPart->Vx(); | |
834 | Float_t vyAnc = ancPart->Vy(); | |
835 | Float_t vrAnc = TMath::Sqrt(vxAnc*vxAnc+vyAnc*vyAnc); | |
836 | fTrackList[ancestor] = SetTrackFlag(vrAnc,ancCode,ancChg); | |
837 | ancestor = ancPart->GetFirstMother(); //Get the next ancestor | |
838 | } | |
839 | ||
840 | //Determine the origin point of the primary particle associated with the hit | |
841 | TParticle *primPart = gAlice->Particle(idprim); | |
842 | TParticlePDG *primPdg = primPart->GetPDG(); | |
843 | Int_t primCode = primPart->GetPdgCode(); | |
844 | Double_t primChg; | |
845 | if (primCode < 10000) { | |
846 | primChg = primPdg->Charge(); | |
847 | } else { | |
848 | primChg = 0.0; | |
849 | } | |
850 | Float_t vxPrim = primPart->Vx(); | |
851 | Float_t vyPrim = primPart->Vy(); | |
852 | Float_t vrPrim = TMath::Sqrt(vxPrim*vxPrim+vyPrim*vyPrim); | |
853 | fTrackList[idprim] = SetTrackFlag(vrPrim,primCode,primChg); | |
854 | } // Hit Loop | |
855 | } //if (pEMCAL) | |
856 | } // Track Loop | |
857 | } | |
858 | ||
859 | Int_t AliEMCALJetFinder | |
860 | ::SetTrackFlag(Float_t radius, Int_t code, Double_t charge) { | |
861 | ||
ff114de3 | 862 | Int_t flag = 0; |
863 | Int_t parton = 0; | |
d594b22e | 864 | Int_t neutral = 0; |
865 | ||
866 | if (charge == 0) neutral = 1; | |
867 | ||
868 | if (TMath::Abs(code) <= 6 || | |
869 | code == 21 || | |
870 | code == 92) parton = 1; | |
871 | ||
872 | //It's not a parton, it's charged and it went through the TPC | |
873 | if (!parton && !neutral && radius <= 84.0) flag = 1; | |
874 | ||
875 | return flag; | |
876 | } | |
877 | ||
ff114de3 | 878 | |
879 | ||
880 | void AliEMCALJetFinder::SaveBackgroundEvent() | |
881 | { | |
882 | // Saves the eta-phi lego and the tracklist | |
883 | // | |
884 | if (fLegoB) delete fLegoB; | |
885 | ||
886 | fLegoB = new TH2F(*fLego); | |
887 | ||
888 | if (fPtB) delete[] fPtB; | |
889 | if (fEtaB) delete[] fEtaB; | |
890 | if (fPhiB) delete[] fPhiB; | |
891 | if (fTrackListB) delete[] fTrackListB; | |
892 | ||
893 | fPtB = new Float_t[fNtS]; | |
894 | fEtaB = new Float_t[fNtS]; | |
895 | fPhiB = new Float_t[fNtS]; | |
896 | fTrackListB = new Int_t [fNtS]; | |
897 | ||
898 | for (Int_t i = 0; i < fNt; i++) { | |
899 | if (!fTrackList[i]) continue; | |
900 | fPtB [fNtB] = fPtT [i]; | |
901 | fEtaB[fNtB] = fEtaT[i]; | |
902 | fPhiB[fNtB] = fPhiT[i]; | |
903 | fTrackList[fNtB] = 1; | |
904 | fNtB++; | |
905 | } | |
906 | } | |
907 | ||
908 | void AliEMCALJetFinder::InitFromBackground() | |
909 | { | |
910 | // | |
911 | // | |
912 | if (fLego) delete fLego; | |
913 | fLego = new TH2F(*fLegoB); | |
914 | } | |
915 | ||
916 | ||
917 | ||
3bc109a9 | 918 | void AliEMCALJetFinder::FindTracksInJetCone() |
919 | { | |
920 | // | |
921 | // Build list of tracks inside jet cone | |
922 | // | |
923 | // Loop over jets | |
924 | Int_t njet = Njets(); | |
925 | for (Int_t nj = 0; nj < njet; nj++) | |
926 | { | |
927 | Float_t etaj = JetEtaW(nj); | |
928 | Float_t phij = JetPhiW(nj); | |
929 | Int_t nT = 0; // number of associated tracks | |
930 | ||
ff114de3 | 931 | // Loop over particles in current event |
3bc109a9 | 932 | for (Int_t part = 0; part < fNt; part++) { |
933 | if (!fTrackList[part]) continue; | |
934 | Float_t phi = fPhiT[part]; | |
935 | Float_t eta = fEtaT[part]; | |
936 | Float_t dr = TMath::Sqrt((etaj-eta)*(etaj-eta) + | |
937 | (phij-phi)*(phij-phi)); | |
938 | if (dr < fConeRadius) { | |
939 | fTrackList[part] = nj+2; | |
940 | nT++; | |
941 | } // < ConeRadius ? | |
942 | } // particle loop | |
d594b22e | 943 | |
ff114de3 | 944 | // Same for background event if available |
945 | Int_t nTB = 0; | |
946 | if (fBackground) { | |
947 | for (Int_t part = 0; part < fNtB; part++) { | |
948 | Float_t phi = fPhiB[part]; | |
949 | Float_t eta = fEtaB[part]; | |
950 | Float_t dr = TMath::Sqrt((etaj-eta)*(etaj-eta) + | |
951 | (phij-phi)*(phij-phi)); | |
952 | if (dr < fConeRadius) { | |
953 | fTrackList[part] = nj+2; | |
954 | nTB++; | |
955 | } // < ConeRadius ? | |
956 | } // particle loop | |
957 | } // Background available ? | |
958 | ||
959 | Int_t nT0 = nT + nTB; | |
960 | ||
961 | if (nT0 > 50) nT0 = 50; | |
d594b22e | 962 | |
3bc109a9 | 963 | Float_t* ptT = new Float_t[nT]; |
964 | Float_t* etaT = new Float_t[nT]; | |
965 | Float_t* phiT = new Float_t[nT]; | |
d594b22e | 966 | Int_t iT = 0; |
967 | Int_t j; | |
968 | ||
3bc109a9 | 969 | for (Int_t part = 0; part < fNt; part++) { |
970 | if (fTrackList[part] == nj+2) { | |
d594b22e | 971 | Int_t index = 0; |
972 | for (j=iT-1; j>=0; j--) { | |
973 | if (fPtT[part] > ptT[j]) { | |
974 | index = j+1; | |
975 | break; | |
976 | } | |
977 | } | |
978 | for (j=iT-1; j>=index; j--) { | |
979 | ptT [j+1] = ptT [j]; | |
980 | etaT[j+1] = etaT[j]; | |
981 | phiT[j+1] = phiT[j]; | |
982 | } | |
983 | ptT [index] = fPtT [part]; | |
984 | etaT[index] = fEtaT[part]; | |
985 | phiT[index] = fPhiT[part]; | |
ff114de3 | 986 | iT++; |
3bc109a9 | 987 | } // particle associated |
ff114de3 | 988 | if (iT > nT0) break; |
3bc109a9 | 989 | } // particle loop |
d594b22e | 990 | |
ff114de3 | 991 | if (fBackground) { |
992 | for (Int_t part = 0; part < fNtB; part++) { | |
993 | if (fTrackList[part] == nj+2) { | |
994 | Int_t index = 0; | |
995 | for (j=iT-1; j>=0; j--) { | |
996 | if (fPtB[part] > ptT[j]) { | |
997 | index = j+1; | |
998 | break; | |
999 | } | |
1000 | } | |
1001 | for (j=iT-1; j>=index; j--) { | |
1002 | ptT [j+1] = ptT [j]; | |
1003 | etaT[j+1] = etaT[j]; | |
1004 | phiT[j+1] = phiT[j]; | |
1005 | } | |
1006 | ptT [index] = fPtB [part]; | |
1007 | etaT[index] = fEtaB[part]; | |
1008 | phiT[index] = fPhiB[part]; | |
1009 | iT++; | |
1010 | } // particle associated | |
1011 | if (iT > nT0) break; | |
1012 | } // particle loop | |
1013 | } // Background available ? | |
1014 | ||
3bc109a9 | 1015 | fJetT[nj]->SetTrackList(nT, ptT, etaT, phiT); |
1016 | delete[] ptT; | |
1017 | delete[] etaT; | |
1018 | delete[] phiT; | |
1019 | } // jet loop loop | |
1020 | } | |
1021 | ||
26dadf3a | 1022 | Float_t AliEMCALJetFinder::PropagatePhi(Float_t pt, Float_t charge, Bool_t& curls) |
1023 | { | |
1024 | // Propagates phi angle to EMCAL radius | |
1025 | // | |
1026 | Float_t dPhi = 0.; | |
1027 | // Get field | |
1028 | Float_t b = ((AliMagFCM*) gAlice->Field())->SolenoidField(); | |
1029 | // Get EMCAL radius | |
1030 | Float_t rEMCAL = AliEMCALGeometry::GetInstance()->GetIPDistance(); | |
1031 | // | |
1032 | // | |
1033 | // bending radies | |
ff114de3 | 1034 | Float_t rB = 333.56 * pt / b; // [cm] |
26dadf3a | 1035 | // |
1036 | // check if particle is curling below EMCAL | |
1037 | if (2.*rB < rEMCAL) { | |
1038 | curls = kTRUE; | |
1039 | return dPhi; | |
1040 | } | |
1041 | // | |
1042 | // if not calculate delta phi | |
1043 | Float_t phi = TMath::ACos(1.-rEMCAL*rEMCAL/(2.*rB*rB)); | |
1044 | dPhi = TMath::ATan2(1.-TMath::Cos(phi), TMath::Sin(phi)); | |
f8f69f71 | 1045 | dPhi = -TMath::Sign(dPhi, charge); |
26dadf3a | 1046 | // |
1047 | return dPhi; | |
1048 | ||
1049 | } | |
1050 | ||
1051 | ||
471f69dc | 1052 | void hf1(Int_t& id, Float_t& x, Float_t& wgt) |
1053 | { | |
1054 | // dummy for hbook calls | |
1055 | ; | |
1056 | } | |
1057 | ||
1058 | ||
d594b22e | 1059 | |
1060 | ||
1061 | ||
1062 | ||
1063 | ||
1064 |