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471f69dc | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
d594b22e | 16 | /* |
17 | $Log$ | |
26dadf3a | 18 | Revision 1.3 2002/01/18 05:07:56 morsch |
19 | - hadronic correction | |
20 | - filling of digits | |
21 | - track selection upon EMCAL information | |
22 | ||
d594b22e | 23 | */ |
24 | ||
471f69dc | 25 | //*-- Author: Andreas Morsch (CERN) |
d594b22e | 26 | //* J.L. Klay (LBL) |
27 | // From root ... | |
471f69dc | 28 | #include <TClonesArray.h> |
29 | #include <TTree.h> | |
d594b22e | 30 | #include <TBranchElement.h> |
471f69dc | 31 | #include <TFile.h> |
32 | #include <TH2.h> | |
33 | #include <TAxis.h> | |
34 | #include <TParticle.h> | |
35 | #include <TParticlePDG.h> | |
d594b22e | 36 | |
37 | // From AliRoot ... | |
471f69dc | 38 | #include "AliEMCALJetFinder.h" |
d594b22e | 39 | #include "AliEMCALFast.h" |
471f69dc | 40 | #include "AliEMCALGeometry.h" |
41 | #include "AliEMCALHit.h" | |
d594b22e | 42 | #include "AliEMCALDigit.h" |
43 | #include "AliEMCALDigitizer.h" | |
44 | #include "AliEMCALHadronCorrection.h" | |
471f69dc | 45 | #include "Ecommon.h" |
46 | #include "AliRun.h" | |
26dadf3a | 47 | #include "AliMagF.h" |
48 | #include "AliMagFCM.h" | |
471f69dc | 49 | #include "AliEMCAL.h" |
50 | #include "AliHeader.h" | |
51 | ||
52 | ClassImp(AliEMCALJetFinder) | |
53 | ||
54 | //____________________________________________________________________________ | |
55 | AliEMCALJetFinder::AliEMCALJetFinder() | |
56 | { | |
57 | // Default constructor | |
d594b22e | 58 | fJets = 0; |
59 | fNjets = 0; | |
60 | fLego = 0; | |
61 | fTrackList = 0; | |
62 | fPtT = 0; | |
63 | fEtaT = 0; | |
64 | fPhiT = 0; | |
65 | fHadronCorrector = 0; | |
471f69dc | 66 | } |
67 | ||
68 | AliEMCALJetFinder::AliEMCALJetFinder(const char* name, const char *title) | |
69 | : TTask(name, title) | |
70 | { | |
71 | // Constructor | |
72 | fJets = new TClonesArray("AliEMCALJet",10000); | |
73 | fNjets = 0; | |
d594b22e | 74 | for (Int_t i = 0; i < 30000; i++) |
471f69dc | 75 | { |
76 | fEtCell[i] = 0.; | |
77 | fEtaCell[i] = 0.; | |
78 | fPhiCell[i] = 0.; | |
79 | } | |
80 | fLego = 0; | |
3bc109a9 | 81 | fTrackList = 0; |
82 | fTrackList = 0; | |
83 | fPtT = 0; | |
84 | fEtaT = 0; | |
85 | fPhiT = 0; | |
d594b22e | 86 | fHadronCorrector = 0; |
87 | SetPtCut(); | |
88 | SetMomentumSmearing(); | |
89 | SetEfficiencySim(); | |
90 | SetDebug(); | |
91 | SetHadronCorrection(); | |
92 | SetSamplingFraction(); | |
471f69dc | 93 | } |
94 | ||
95 | ||
96 | ||
97 | ||
98 | //____________________________________________________________________________ | |
99 | AliEMCALJetFinder::~AliEMCALJetFinder() | |
100 | { | |
101 | // Destructor | |
102 | // | |
103 | if (fJets){ | |
104 | fJets->Delete(); | |
105 | delete fJets; | |
106 | } | |
107 | } | |
108 | ||
109 | ||
110 | ||
3bc109a9 | 111 | |
471f69dc | 112 | #ifndef WIN32 |
113 | # define jet_finder_ua1 jet_finder_ua1_ | |
114 | # define hf1 hf1_ | |
115 | # define type_of_call | |
116 | ||
117 | #else | |
118 | # define jet_finder_ua1 J | |
119 | # define hf1 HF1 | |
120 | # define type_of_call _stdcall | |
121 | #endif | |
122 | ||
123 | extern "C" void type_of_call | |
124 | jet_finder_ua1(Int_t& ncell, Int_t& ncell_tot, | |
125 | Float_t etc[30000], Float_t etac[30000], | |
126 | Float_t phic[30000], | |
127 | Float_t& min_move, Float_t& max_move, Int_t& mode, | |
128 | Float_t& prec_bg, Int_t& ierror); | |
129 | ||
130 | extern "C" void type_of_call hf1(Int_t& id, Float_t& x, Float_t& wgt); | |
131 | ||
132 | ||
133 | ||
134 | ||
135 | ||
136 | void AliEMCALJetFinder::Find(Int_t ncell, Int_t ncell_tot, Float_t etc[30000], | |
137 | Float_t etac[30000], Float_t phic[30000], | |
138 | Float_t min_move, Float_t max_move, Int_t mode, | |
139 | Float_t prec_bg, Int_t ierror) | |
140 | { | |
141 | // Wrapper for fortran coded jet finder | |
142 | // Full argument list | |
143 | jet_finder_ua1(ncell, ncell_tot, etc, etac, phic, | |
144 | min_move, max_move, mode, prec_bg, ierror); | |
145 | // Write result to output | |
146 | WriteJets(); | |
147 | } | |
148 | ||
149 | void AliEMCALJetFinder::Find() | |
150 | { | |
151 | // Wrapper for fortran coded jet finder using member data for | |
152 | // argument list | |
153 | ||
154 | Float_t min_move = 0; | |
155 | Float_t max_move = 0; | |
156 | Int_t mode = 0; | |
157 | Float_t prec_bg = 0.; | |
158 | Int_t ierror = 0; | |
159 | ||
160 | jet_finder_ua1(fNcell, fNtot, fEtCell, fEtaCell, fPhiCell, | |
161 | min_move, max_move, mode, prec_bg, ierror); | |
162 | // Write result to output | |
3bc109a9 | 163 | Int_t njet = Njets(); |
d594b22e | 164 | |
3bc109a9 | 165 | for (Int_t nj=0; nj<njet; nj++) |
166 | { | |
d594b22e | 167 | |
168 | ||
3bc109a9 | 169 | fJetT[nj] = new AliEMCALJet(JetEnergy(nj), |
170 | JetPhiW(nj), | |
171 | JetEtaW(nj)); | |
172 | } | |
173 | FindTracksInJetCone(); | |
471f69dc | 174 | WriteJets(); |
175 | } | |
176 | ||
177 | ||
178 | Int_t AliEMCALJetFinder::Njets() | |
179 | { | |
180 | // Get number of reconstructed jets | |
181 | return EMCALJETS.njet; | |
182 | } | |
183 | ||
184 | Float_t AliEMCALJetFinder::JetEnergy(Int_t i) | |
185 | { | |
186 | // Get reconstructed jet energy | |
187 | return EMCALJETS.etj[i]; | |
188 | } | |
189 | ||
190 | Float_t AliEMCALJetFinder::JetPhiL(Int_t i) | |
191 | { | |
192 | // Get reconstructed jet phi from leading particle | |
193 | return EMCALJETS.phij[0][i]; | |
194 | } | |
195 | ||
196 | Float_t AliEMCALJetFinder::JetPhiW(Int_t i) | |
197 | { | |
198 | // Get reconstructed jet phi from weighting | |
199 | return EMCALJETS.phij[1][i]; | |
200 | } | |
201 | ||
202 | Float_t AliEMCALJetFinder::JetEtaL(Int_t i) | |
203 | { | |
204 | // Get reconstructed jet eta from leading particles | |
205 | return EMCALJETS.etaj[0][i]; | |
206 | } | |
207 | ||
208 | ||
209 | Float_t AliEMCALJetFinder::JetEtaW(Int_t i) | |
210 | { | |
211 | // Get reconstructed jet eta from weighting | |
212 | return EMCALJETS.etaj[1][i]; | |
213 | } | |
214 | ||
215 | void AliEMCALJetFinder::SetCellSize(Float_t eta, Float_t phi) | |
216 | { | |
217 | // Set grid cell size | |
218 | EMCALCELLGEO.etaCellSize = eta; | |
219 | EMCALCELLGEO.phiCellSize = phi; | |
d594b22e | 220 | fDeta = eta; |
221 | fDphi = phi; | |
471f69dc | 222 | } |
223 | ||
224 | void AliEMCALJetFinder::SetConeRadius(Float_t par) | |
225 | { | |
226 | // Set jet cone radius | |
227 | EMCALJETPARAM.coneRad = par; | |
3bc109a9 | 228 | fConeRadius = par; |
471f69dc | 229 | } |
230 | ||
231 | void AliEMCALJetFinder::SetEtSeed(Float_t par) | |
232 | { | |
233 | // Set et cut for seeds | |
234 | EMCALJETPARAM.etSeed = par; | |
d594b22e | 235 | fEtSeed = par; |
471f69dc | 236 | } |
237 | ||
238 | void AliEMCALJetFinder::SetMinJetEt(Float_t par) | |
239 | { | |
240 | // Set minimum jet et | |
241 | EMCALJETPARAM.ejMin = par; | |
d594b22e | 242 | fMinJetEt = par; |
471f69dc | 243 | } |
244 | ||
245 | void AliEMCALJetFinder::SetMinCellEt(Float_t par) | |
246 | { | |
247 | // Set et cut per cell | |
248 | EMCALJETPARAM.etMin = par; | |
d594b22e | 249 | fMinCellEt = par; |
471f69dc | 250 | } |
251 | ||
3bc109a9 | 252 | void AliEMCALJetFinder::SetPtCut(Float_t par) |
253 | { | |
254 | // Set pT cut on charged tracks | |
255 | fPtCut = par; | |
256 | } | |
257 | ||
471f69dc | 258 | |
259 | void AliEMCALJetFinder::Test() | |
260 | { | |
261 | // | |
262 | // Test the finder call | |
263 | // | |
264 | const Int_t nmax = 30000; | |
265 | Int_t ncell = 10; | |
266 | Int_t ncell_tot = 100; | |
267 | ||
268 | Float_t etc[nmax]; | |
269 | Float_t etac[nmax]; | |
270 | Float_t phic[nmax]; | |
271 | Float_t min_move = 0; | |
272 | Float_t max_move = 0; | |
273 | Int_t mode = 0; | |
274 | Float_t prec_bg = 0; | |
275 | Int_t ierror = 0; | |
276 | ||
277 | ||
278 | Find(ncell, ncell_tot, etc, etac, phic, | |
279 | min_move, max_move, mode, prec_bg, ierror); | |
280 | ||
281 | } | |
282 | ||
283 | // | |
284 | // I/O | |
285 | // | |
286 | ||
287 | void AliEMCALJetFinder::AddJet(const AliEMCALJet& jet) | |
288 | { | |
289 | // | |
290 | // Add a jet | |
291 | // | |
292 | TClonesArray &lrawcl = *fJets; | |
293 | new(lrawcl[fNjets++]) AliEMCALJet(jet); | |
294 | } | |
295 | ||
296 | void AliEMCALJetFinder::ResetJets() | |
297 | { | |
298 | // | |
299 | // Reset Jet List | |
300 | // | |
301 | fJets->Clear(); | |
302 | fNjets = 0; | |
303 | } | |
304 | ||
305 | void AliEMCALJetFinder::WriteJets() | |
306 | { | |
307 | // | |
308 | // Add all jets to the list | |
309 | // | |
310 | const Int_t kBufferSize = 4000; | |
311 | TTree *pK = gAlice->TreeK(); | |
312 | const char* file = (pK->GetCurrentFile())->GetName(); | |
313 | // I/O | |
314 | AliEMCAL* pEMCAL = (AliEMCAL* )gAlice->GetModule("EMCAL"); | |
d594b22e | 315 | |
316 | if (fDebug > 1) | |
471f69dc | 317 | printf("Make Branch - TreeR address %p %p\n",gAlice->TreeR(), pEMCAL); |
d594b22e | 318 | |
471f69dc | 319 | if (fJets && gAlice->TreeR()) { |
320 | pEMCAL->MakeBranchInTree(gAlice->TreeR(), | |
d594b22e | 321 | "EMCALJets", |
471f69dc | 322 | &fJets, |
323 | kBufferSize, | |
324 | file); | |
325 | } | |
326 | Int_t njet = Njets(); | |
3bc109a9 | 327 | for (Int_t nj = 0; nj < njet; nj++) |
471f69dc | 328 | { |
3bc109a9 | 329 | AddJet(*fJetT[nj]); |
330 | delete fJetT[nj]; | |
471f69dc | 331 | } |
3bc109a9 | 332 | |
471f69dc | 333 | Int_t nev = gAlice->GetHeader()->GetEvent(); |
334 | gAlice->TreeR()->Fill(); | |
335 | char hname[30]; | |
336 | sprintf(hname,"TreeR%d", nev); | |
337 | gAlice->TreeR()->Write(hname); | |
338 | gAlice->TreeR()->Reset(); | |
339 | ResetJets(); | |
340 | } | |
341 | ||
342 | void AliEMCALJetFinder::BookLego() | |
343 | { | |
344 | // | |
345 | // Book histo for discretisation | |
346 | // | |
347 | // | |
348 | // Get geometry parameters from | |
349 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
350 | AliEMCALGeometry* geom = | |
351 | AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), ""); | |
352 | fNbinEta = geom->GetNZ(); | |
353 | fNbinPhi = geom->GetNPhi(); | |
354 | const Float_t phiMin = geom->GetArm1PhiMin()*TMath::Pi()/180.; | |
355 | const Float_t phiMax = geom->GetArm1PhiMax()*TMath::Pi()/180.; | |
356 | fDphi = (phiMax-phiMin)/fNbinEta; | |
357 | fDeta = 1.4/fNbinEta; | |
358 | fNtot = fNbinPhi*fNbinEta; | |
359 | ||
360 | // | |
361 | fLego = new TH2F("legoH","eta-phi", | |
362 | fNbinEta, -0.7, 0.7, | |
363 | fNbinPhi, phiMin, phiMax); | |
364 | } | |
365 | ||
366 | void AliEMCALJetFinder::DumpLego() | |
367 | { | |
368 | // | |
369 | // Dump lego histo into array | |
370 | // | |
371 | fNcell = 0; | |
372 | for (Int_t i = 1; i < fNbinEta; i++) { | |
373 | for (Int_t j = 1; j < fNbinPhi; j++) { | |
374 | Float_t e = fLego->GetBinContent(i,j); | |
375 | TAxis* Xaxis = fLego->GetXaxis(); | |
376 | TAxis* Yaxis = fLego->GetYaxis(); | |
377 | Float_t eta = Xaxis->GetBinCenter(i); | |
378 | Float_t phi = Yaxis->GetBinCenter(j); | |
379 | fEtCell[fNcell] = e; | |
380 | fEtaCell[fNcell] = eta; | |
381 | fPhiCell[fNcell] = phi; | |
382 | fNcell++; | |
383 | } // phi | |
384 | } // eta | |
385 | fNcell--; | |
386 | } | |
387 | ||
388 | void AliEMCALJetFinder::ResetMap() | |
389 | { | |
390 | // | |
391 | // Reset eta-phi array | |
392 | ||
393 | for (Int_t i=0; i<30000; i++) | |
394 | { | |
395 | fEtCell[i] = 0.; | |
396 | fEtaCell[i] = 0.; | |
397 | fPhiCell[i] = 0.; | |
398 | } | |
399 | } | |
400 | ||
401 | ||
402 | void AliEMCALJetFinder::FillFromTracks(Int_t flag, Int_t ich) | |
403 | { | |
404 | // | |
d594b22e | 405 | // Fill Cells with track information |
471f69dc | 406 | // |
407 | // | |
408 | ResetMap(); | |
409 | ||
410 | if (!fLego) BookLego(); | |
411 | // Reset | |
412 | if (flag == 0) fLego->Reset(); | |
413 | // | |
414 | // Access particle information | |
415 | Int_t npart = (gAlice->GetHeader())->GetNprimary(); | |
3bc109a9 | 416 | // Create track list |
417 | // | |
418 | // 0: not selected | |
419 | // 1: selected for jet finding | |
420 | // 2: inside jet | |
421 | // .... | |
422 | if (fTrackList) delete[] fTrackList; | |
423 | if (fPtT) delete[] fPtT; | |
424 | if (fEtaT) delete[] fEtaT; | |
425 | if (fPhiT) delete[] fPhiT; | |
426 | ||
427 | fTrackList = new Int_t [npart]; | |
428 | fPtT = new Float_t[npart]; | |
429 | fEtaT = new Float_t[npart]; | |
430 | fPhiT = new Float_t[npart]; | |
431 | fNt = npart; | |
d594b22e | 432 | for (Int_t part = 2; part < npart; part++) { |
471f69dc | 433 | TParticle *MPart = gAlice->Particle(part); |
434 | Int_t mpart = MPart->GetPdgCode(); | |
435 | Int_t child1 = MPart->GetFirstDaughter(); | |
436 | Float_t pT = MPart->Pt(); | |
d594b22e | 437 | Float_t p = MPart->P(); |
471f69dc | 438 | Float_t phi = MPart->Phi(); |
3bc109a9 | 439 | Float_t eta = MPart->Eta(); |
d594b22e | 440 | |
441 | if (fDebug > 0) { | |
442 | if (part == 6 || part == 7) | |
443 | { | |
444 | printf("\n Simulated Jet (pt, eta, phi): %d %f %f %f", | |
445 | part-5, pT, eta, phi); | |
446 | } | |
447 | ||
448 | // if (mpart == 21) | |
449 | ||
450 | // printf("\n Simulated Jet (pt, eta, phi): %d %d %f %f %f", | |
451 | // part, mpart, pT, eta, phi); | |
452 | } | |
453 | ||
3bc109a9 | 454 | |
455 | fTrackList[part] = 0; | |
456 | fPtT[part] = pT; | |
457 | fEtaT[part] = eta; | |
458 | fPhiT[part] = phi; | |
459 | ||
460 | if (part < 2) continue; | |
461 | if (pT == 0 || pT < fPtCut) continue; | |
26dadf3a | 462 | TParticlePDG* pdgP = 0; |
471f69dc | 463 | // charged or neutral |
464 | if (ich == 0) { | |
26dadf3a | 465 | pdgP = MPart->GetPDG(); |
471f69dc | 466 | if (pdgP->Charge() == 0) continue; |
467 | } | |
468 | // skip partons | |
469 | if (TMath::Abs(mpart) <= 6 || | |
470 | mpart == 21 || | |
471 | mpart == 92) continue; | |
472 | // acceptance cut | |
473 | if (TMath::Abs(eta) > 0.7) continue; | |
474 | if (phi*180./TMath::Pi() > 120.) continue; | |
475 | // final state only | |
476 | if (child1 >= 0 && child1 < npart) continue; | |
d594b22e | 477 | // |
478 | if (fDebug > 1) | |
479 | printf("\n sel:%5d %5d %5d %8.2f %8.2f %8.2f", | |
480 | part, mpart, child1, eta, phi, pT); | |
481 | // | |
26dadf3a | 482 | // |
483 | // phi propagation | |
484 | ||
485 | Bool_t curls = kFALSE; | |
486 | Float_t dphi = PropagatePhi(pT, pdgP->Charge(), curls); | |
487 | if (curls) continue; | |
488 | phi += dphi; | |
489 | // | |
d594b22e | 490 | // Momentum smearing goes here ... |
491 | // | |
492 | if (fSmear) { | |
493 | p = AliEMCALFast::SmearMomentum(1,p); | |
494 | } | |
495 | // | |
496 | // Tracking Efficiency and TPC acceptance goes here ... | |
497 | if (fEffic) { | |
498 | Float_t eff = AliEMCALFast::Efficiency(1,p); | |
499 | if (AliEMCALFast::RandomReject(eff)) continue; | |
500 | } | |
501 | // | |
502 | // Correction of Hadronic Energy goes here ... | |
503 | // | |
504 | if (fHCorrection) { | |
505 | if (!fHadronCorrector) | |
506 | Fatal("AliEMCALJetFinder", | |
507 | "Hadronic energy correction required but not defined !"); | |
508 | Float_t dpH = fHadronCorrector->GetEnergy(p, eta, 7); | |
509 | p -= dpH; | |
510 | } | |
511 | // | |
512 | // More to do ? Just think about it ! | |
513 | // | |
3bc109a9 | 514 | fTrackList[part] = 1; |
d594b22e | 515 | // |
516 | fLego->Fill(eta, phi, p); | |
471f69dc | 517 | } // primary loop |
518 | DumpLego(); | |
519 | } | |
520 | ||
521 | void AliEMCALJetFinder::FillFromHits(Int_t flag) | |
522 | { | |
523 | // | |
d594b22e | 524 | // Fill Cells with hit information |
471f69dc | 525 | // |
526 | // | |
527 | ResetMap(); | |
528 | ||
529 | if (!fLego) BookLego(); | |
530 | if (flag == 0) fLego->Reset(); | |
531 | ||
532 | // | |
533 | // Access hit information | |
534 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
471f69dc | 535 | |
536 | TTree *treeH = gAlice->TreeH(); | |
537 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
538 | // | |
539 | // Loop over tracks | |
540 | // | |
541 | Int_t nbytes = 0; | |
542 | ||
543 | ||
544 | for (Int_t track=0; track<ntracks;track++) { | |
545 | gAlice->ResetHits(); | |
546 | nbytes += treeH->GetEvent(track); | |
547 | // | |
548 | // Loop over hits | |
549 | // | |
550 | for(AliEMCALHit* mHit=(AliEMCALHit*) pEMCAL->FirstHit(-1); | |
551 | mHit; | |
552 | mHit=(AliEMCALHit*) pEMCAL->NextHit()) | |
553 | { | |
554 | Float_t x = mHit->X(); // x-pos of hit | |
555 | Float_t y = mHit->Y(); // y-pos | |
556 | Float_t z = mHit->Z(); // z-pos | |
557 | Float_t eloss = mHit->GetEnergy(); // deposited energy | |
d594b22e | 558 | |
559 | Float_t r = TMath::Sqrt(x*x+y*y); | |
560 | Float_t theta = TMath::ATan2(r,z); | |
561 | Float_t eta = -TMath::Log(TMath::Tan(theta/2.)); | |
562 | Float_t phi = TMath::ATan2(y,x); | |
563 | fLego->Fill(eta, phi, fSamplingF*eloss); | |
471f69dc | 564 | } // Hit Loop |
565 | } // Track Loop | |
566 | DumpLego(); | |
567 | } | |
568 | ||
d594b22e | 569 | void AliEMCALJetFinder::FillFromDigits(Int_t flag) |
570 | { | |
571 | // | |
572 | // Fill Cells with digit information | |
573 | // | |
574 | // | |
575 | ResetMap(); | |
576 | ||
577 | if (!fLego) BookLego(); | |
578 | if (flag == 0) fLego->Reset(); | |
579 | Int_t nbytes; | |
580 | ||
581 | ||
582 | // | |
583 | // Connect digits | |
584 | // | |
585 | TClonesArray* digs = new TClonesArray("AliEMCALDigit", 10000); | |
586 | TTree *treeD = gAlice->TreeD(); | |
587 | TBranchElement* branchDg = (TBranchElement*) | |
588 | treeD->GetBranch("EMCAL"); | |
589 | ||
590 | if (!branchDg) Fatal("AliEMCALJetFinder", | |
591 | "Reading digits requested but no digits in file !"); | |
592 | ||
593 | branchDg->SetAddress(&digs); | |
594 | Int_t nent = (Int_t) branchDg->GetEntries(); | |
595 | // | |
596 | // Connect digitizer | |
597 | // | |
598 | AliEMCALDigitizer* digr = new AliEMCALDigitizer(); | |
599 | TBranchElement* branchDr = (TBranchElement*) | |
600 | treeD->GetBranch("AliEMCALDigitizer"); | |
601 | branchDr->SetAddress(&digr); | |
602 | // | |
603 | // | |
604 | nbytes += branchDg->GetEntry(0); | |
605 | nbytes += branchDr->GetEntry(0); | |
606 | // | |
607 | // Get digitizer parameters | |
608 | Float_t towerADCped = digr->GetTowerpedestal(); | |
609 | Float_t towerADCcha = digr->GetTowerchannel(); | |
610 | Float_t preshoADCped = digr->GetPreShopedestal(); | |
611 | Float_t preshoADCcha = digr->GetPreShochannel(); | |
612 | ||
613 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
614 | AliEMCALGeometry* geom = | |
615 | AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), ""); | |
616 | ||
617 | if (fDebug) { | |
618 | Int_t ndig = digs->GetEntries(); | |
619 | printf("\n Number of Digits: %d %d\n", ndig, nent); | |
620 | printf("\n Parameters: %f %f %f %f\n", | |
621 | towerADCped, towerADCcha, preshoADCped, preshoADCcha ); | |
622 | printf("\n Geometry: %d %d\n", geom->GetNEta(), geom->GetNPhi()); | |
623 | } | |
624 | ||
625 | // | |
626 | // Loop over digits | |
627 | AliEMCALDigit* sdg; | |
628 | TIter next(digs); | |
629 | while ((sdg = (AliEMCALDigit*)(next()))) | |
630 | { | |
631 | Double_t pedestal; | |
632 | Double_t channel; | |
633 | if (sdg->GetId() > (geom->GetNZ() * geom->GetNPhi())) | |
634 | { | |
635 | pedestal = preshoADCped; | |
636 | channel = preshoADCcha; | |
637 | } else { | |
638 | pedestal = towerADCped; | |
639 | channel = towerADCcha; | |
640 | } | |
641 | ||
642 | Float_t eta = sdg->GetEta(); | |
643 | Float_t phi = sdg->GetPhi() * TMath::Pi()/180.; | |
644 | Float_t amp = (Float_t) (channel*(sdg->GetAmp())-pedestal); | |
645 | ||
646 | if (fDebug > 1) printf("\n Digit: eta %8.3f phi %8.3f amp %8.3f %8d", | |
647 | eta, phi, amp, sdg->GetAmp()); | |
648 | ||
649 | fLego->Fill(eta, phi, fSamplingF*amp); | |
650 | } // digit loop | |
651 | // | |
652 | // Dump lego hist | |
653 | DumpLego(); | |
654 | } | |
655 | ||
656 | ||
657 | void AliEMCALJetFinder::FillFromHitFlaggedTracks(Int_t flag) | |
658 | { | |
659 | // | |
660 | // Fill Cells with hit information | |
661 | // | |
662 | // | |
663 | ResetMap(); | |
664 | ||
665 | if (!fLego) BookLego(); | |
666 | // Reset | |
667 | if (flag == 0) fLego->Reset(); | |
668 | ||
669 | //Flag charged tracks passing through TPC which | |
670 | //are associated to EMCAL Hits | |
671 | BuildTrackFlagTable(); | |
672 | ||
673 | // | |
674 | // Access particle information | |
675 | TTree *treeH = gAlice->TreeH(); | |
676 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
677 | ||
678 | if (fPtT) delete[] fPtT; | |
679 | if (fEtaT) delete[] fEtaT; | |
680 | if (fPhiT) delete[] fPhiT; | |
681 | ||
682 | fPtT = new Float_t[ntracks]; | |
683 | fEtaT = new Float_t[ntracks]; | |
684 | fPhiT = new Float_t[ntracks]; | |
685 | fNt = ntracks; | |
686 | ||
687 | for (Int_t track = 0; track < ntracks; track++) { | |
688 | TParticle *MPart = gAlice->Particle(track); | |
689 | Float_t pT = MPart->Pt(); | |
690 | Float_t phi = MPart->Phi(); | |
691 | Float_t eta = MPart->Eta(); | |
692 | ||
693 | if(fTrackList[track]) { | |
694 | fPtT[track] = pT; | |
695 | fEtaT[track] = eta; | |
696 | fPhiT[track] = phi; | |
697 | ||
698 | if (track < 2) continue; //Colliding particles? | |
699 | if (pT == 0 || pT < fPtCut) continue; | |
700 | fLego->Fill(eta, phi, pT); | |
701 | } | |
702 | } // track loop | |
703 | DumpLego(); | |
704 | } | |
705 | ||
706 | void AliEMCALJetFinder::BuildTrackFlagTable() { | |
707 | ||
708 | // Method to generate a lookup table for TreeK particles | |
709 | // which are linked to hits in the EMCAL | |
710 | // | |
711 | // --Author: J.L. Klay | |
712 | // | |
713 | printf("\n Building track flag table.\n"); | |
714 | ||
715 | ||
716 | // Access hit information | |
717 | AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); | |
718 | ||
719 | TTree *TK = gAlice->TreeK(); // Get the number of entries in the kine tree | |
720 | Int_t nKTrks = (Int_t) TK->GetEntries(); // (Number of particles created somewhere) | |
721 | ||
722 | if(fTrackList) delete[] fTrackList; //Make sure we get rid of the old one | |
723 | fTrackList = new Int_t[nKTrks]; //before generating a new one | |
724 | ||
725 | for (Int_t i = 0; i < nKTrks; i++) { //Initialize members to 0 | |
726 | fTrackList[i] = 0; | |
727 | } | |
728 | ||
729 | TTree *treeH = gAlice->TreeH(); | |
730 | Int_t ntracks = (Int_t) treeH->GetEntries(); | |
731 | // | |
732 | // Loop over tracks | |
733 | // | |
734 | Int_t nbytes = 0; | |
735 | ||
736 | for (Int_t track=0; track<ntracks;track++) { | |
737 | gAlice->ResetHits(); | |
738 | nbytes += treeH->GetEvent(track); | |
739 | if (pEMCAL) { | |
740 | ||
741 | // | |
742 | // Loop over hits | |
743 | // | |
744 | for(AliEMCALHit* mHit=(AliEMCALHit*) pEMCAL->FirstHit(-1); | |
745 | mHit; | |
746 | mHit=(AliEMCALHit*) pEMCAL->NextHit()) | |
747 | { | |
748 | Int_t iTrk = mHit->Track(); // track number | |
749 | Int_t idprim = mHit->GetPrimary(); // primary particle | |
750 | ||
751 | //Determine the origin point of this particle - it made a hit in the EMCAL | |
752 | TParticle *trkPart = gAlice->Particle(iTrk); | |
753 | TParticlePDG *trkPdg = trkPart->GetPDG(); | |
754 | Int_t trkCode = trkPart->GetPdgCode(); | |
755 | Double_t trkChg; | |
756 | if (trkCode < 10000) { //Big Ions cause problems for | |
757 | trkChg = trkPdg->Charge(); //this function. Since they aren't | |
758 | } else { //likely to make it very far, set | |
759 | trkChg = 0.0; //their charge to 0 for the Flag test | |
760 | } | |
761 | Float_t vxTrk = trkPart->Vx(); | |
762 | Float_t vyTrk = trkPart->Vy(); | |
763 | Float_t vrTrk = TMath::Sqrt(vxTrk*vxTrk+vyTrk*vyTrk); | |
764 | fTrackList[iTrk] = SetTrackFlag(vrTrk,trkCode,trkChg); | |
765 | ||
766 | //Loop through the ancestry of the EMCAL entrance particles | |
767 | Int_t ancestor = trkPart->GetFirstMother(); //Get track's Mother | |
768 | while (ancestor != -1) { | |
769 | TParticle *ancPart = gAlice->Particle(ancestor); //get particle info on ancestor | |
770 | TParticlePDG *ancPdg = ancPart->GetPDG(); | |
771 | Int_t ancCode = ancPart->GetPdgCode(); | |
772 | Double_t ancChg; | |
773 | if (ancCode < 10000) { | |
774 | ancChg = ancPdg->Charge(); | |
775 | } else { | |
776 | ancChg = 0.0; | |
777 | } | |
778 | Float_t vxAnc = ancPart->Vx(); | |
779 | Float_t vyAnc = ancPart->Vy(); | |
780 | Float_t vrAnc = TMath::Sqrt(vxAnc*vxAnc+vyAnc*vyAnc); | |
781 | fTrackList[ancestor] = SetTrackFlag(vrAnc,ancCode,ancChg); | |
782 | ancestor = ancPart->GetFirstMother(); //Get the next ancestor | |
783 | } | |
784 | ||
785 | //Determine the origin point of the primary particle associated with the hit | |
786 | TParticle *primPart = gAlice->Particle(idprim); | |
787 | TParticlePDG *primPdg = primPart->GetPDG(); | |
788 | Int_t primCode = primPart->GetPdgCode(); | |
789 | Double_t primChg; | |
790 | if (primCode < 10000) { | |
791 | primChg = primPdg->Charge(); | |
792 | } else { | |
793 | primChg = 0.0; | |
794 | } | |
795 | Float_t vxPrim = primPart->Vx(); | |
796 | Float_t vyPrim = primPart->Vy(); | |
797 | Float_t vrPrim = TMath::Sqrt(vxPrim*vxPrim+vyPrim*vyPrim); | |
798 | fTrackList[idprim] = SetTrackFlag(vrPrim,primCode,primChg); | |
799 | } // Hit Loop | |
800 | } //if (pEMCAL) | |
801 | } // Track Loop | |
802 | } | |
803 | ||
804 | Int_t AliEMCALJetFinder | |
805 | ::SetTrackFlag(Float_t radius, Int_t code, Double_t charge) { | |
806 | ||
807 | Int_t flag = 0; | |
808 | Int_t parton = 0; | |
809 | Int_t neutral = 0; | |
810 | ||
811 | if (charge == 0) neutral = 1; | |
812 | ||
813 | if (TMath::Abs(code) <= 6 || | |
814 | code == 21 || | |
815 | code == 92) parton = 1; | |
816 | ||
817 | //It's not a parton, it's charged and it went through the TPC | |
818 | if (!parton && !neutral && radius <= 84.0) flag = 1; | |
819 | ||
820 | return flag; | |
821 | } | |
822 | ||
3bc109a9 | 823 | void AliEMCALJetFinder::FindTracksInJetCone() |
824 | { | |
825 | // | |
826 | // Build list of tracks inside jet cone | |
827 | // | |
828 | // Loop over jets | |
829 | Int_t njet = Njets(); | |
830 | for (Int_t nj = 0; nj < njet; nj++) | |
831 | { | |
832 | Float_t etaj = JetEtaW(nj); | |
833 | Float_t phij = JetPhiW(nj); | |
834 | Int_t nT = 0; // number of associated tracks | |
835 | ||
836 | // Loop over particles | |
837 | for (Int_t part = 0; part < fNt; part++) { | |
838 | if (!fTrackList[part]) continue; | |
839 | Float_t phi = fPhiT[part]; | |
840 | Float_t eta = fEtaT[part]; | |
841 | Float_t dr = TMath::Sqrt((etaj-eta)*(etaj-eta) + | |
842 | (phij-phi)*(phij-phi)); | |
843 | if (dr < fConeRadius) { | |
844 | fTrackList[part] = nj+2; | |
845 | nT++; | |
846 | } // < ConeRadius ? | |
847 | } // particle loop | |
d594b22e | 848 | |
849 | if (nT > 50) nT = 50; | |
850 | ||
3bc109a9 | 851 | Float_t* ptT = new Float_t[nT]; |
852 | Float_t* etaT = new Float_t[nT]; | |
853 | Float_t* phiT = new Float_t[nT]; | |
d594b22e | 854 | Int_t iT = 0; |
855 | Int_t j; | |
856 | ||
3bc109a9 | 857 | for (Int_t part = 0; part < fNt; part++) { |
858 | if (fTrackList[part] == nj+2) { | |
d594b22e | 859 | Int_t index = 0; |
860 | for (j=iT-1; j>=0; j--) { | |
861 | if (fPtT[part] > ptT[j]) { | |
862 | index = j+1; | |
863 | break; | |
864 | } | |
865 | } | |
866 | for (j=iT-1; j>=index; j--) { | |
867 | ptT [j+1] = ptT [j]; | |
868 | etaT[j+1] = etaT[j]; | |
869 | phiT[j+1] = phiT[j]; | |
870 | } | |
871 | ptT [index] = fPtT [part]; | |
872 | etaT[index] = fEtaT[part]; | |
873 | phiT[index] = fPhiT[part]; | |
874 | iT++; | |
3bc109a9 | 875 | } // particle associated |
876 | } // particle loop | |
d594b22e | 877 | |
3bc109a9 | 878 | fJetT[nj]->SetTrackList(nT, ptT, etaT, phiT); |
879 | delete[] ptT; | |
880 | delete[] etaT; | |
881 | delete[] phiT; | |
882 | } // jet loop loop | |
883 | } | |
884 | ||
26dadf3a | 885 | Float_t AliEMCALJetFinder::PropagatePhi(Float_t pt, Float_t charge, Bool_t& curls) |
886 | { | |
887 | // Propagates phi angle to EMCAL radius | |
888 | // | |
889 | Float_t dPhi = 0.; | |
890 | // Get field | |
891 | Float_t b = ((AliMagFCM*) gAlice->Field())->SolenoidField(); | |
892 | // Get EMCAL radius | |
893 | Float_t rEMCAL = AliEMCALGeometry::GetInstance()->GetIPDistance(); | |
894 | // | |
895 | // | |
896 | // bending radies | |
897 | Float_t rB = 3.3356 * pt / b; | |
898 | ||
899 | // | |
900 | // check if particle is curling below EMCAL | |
901 | if (2.*rB < rEMCAL) { | |
902 | curls = kTRUE; | |
903 | return dPhi; | |
904 | } | |
905 | // | |
906 | // if not calculate delta phi | |
907 | Float_t phi = TMath::ACos(1.-rEMCAL*rEMCAL/(2.*rB*rB)); | |
908 | dPhi = TMath::ATan2(1.-TMath::Cos(phi), TMath::Sin(phi)); | |
909 | dPhi = TMath::Sign(dPhi, charge); | |
910 | // | |
911 | return dPhi; | |
912 | ||
913 | } | |
914 | ||
915 | ||
471f69dc | 916 | void hf1(Int_t& id, Float_t& x, Float_t& wgt) |
917 | { | |
918 | // dummy for hbook calls | |
919 | ; | |
920 | } | |
921 | ||
922 | ||
d594b22e | 923 | |
924 | ||
925 | ||
926 | ||
927 | ||
928 |