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ee7de0dd 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
16/* $Id$ */
17
18//---------------------------------------------------------------------
8838ab7a 19// UA1 Cone Algorithm Jet finder for charged + neutral jet studies
20// manages the search for jets using charged particle momentum and
21// neutral cell energy information
22// Based on UA1 V1 (from R. Diaz)
23// Author: magali.estienne@subatech.in2p3.fr
ee7de0dd 24//---------------------------------------------------------------------
25
ee7de0dd 26#include <TClonesArray.h>
ee7de0dd 27#include <TH1F.h>
28#include <TH2F.h>
29#include <TLorentzVector.h>
30#include <TMath.h>
31#include <TRefArray.h>
be6e5811 32#include "TFile.h"
ee7de0dd 33
34#include "AliUA1JetFinderV2.h"
35#include "AliUA1JetHeaderV1.h"
36#include "AliJetUnitArray.h"
952b368c 37#include "AliJetReaderHeader.h"
38#include "AliJetReader.h"
39#include "AliJetHeader.h"
ee7de0dd 40
be6e5811 41class TArrayF;
42class TFile;
43class AliJetReader;
44class AliAODJet;
ee7de0dd 45
46ClassImp(AliUA1JetFinderV2)
47
ee7de0dd 48
8838ab7a 49////////////////////////////////////////////////////////////////////////
9e4cc50d 50AliUA1JetFinderV2::AliUA1JetFinderV2() :
8838ab7a 51 AliJetFinder(),
52 fLego(0),
53 fDebug(0),
54 fOpt(0)
ee7de0dd 55{
8838ab7a 56 //
ee7de0dd 57 // Constructor
8838ab7a 58 //
ee7de0dd 59}
60
61////////////////////////////////////////////////////////////////////////
ee7de0dd 62AliUA1JetFinderV2::~AliUA1JetFinderV2()
ee7de0dd 63{
8838ab7a 64 //
65 // Destructor
66 //
ee7de0dd 67}
68
69////////////////////////////////////////////////////////////////////////
8838ab7a 70void AliUA1JetFinderV2::FindJetsC()
71{
72 //
73 // Used to find jets using charged particle momentum information
74 //
75 // 1) Fill cell map array
76 // 2) calculate total energy and fluctuation level
77 // 3) Run algorithm
78 // 3.1) look centroides in cell map
79 // 3.2) calculate total energy in cones
80 // 3.3) flag as a possible jet
81 // 3.4) reorder cones by energy
82 // 4) subtract backg in accepted jets
83 // 5) fill AliJet list
84
85 // Transform input to pt,eta,phi plus lego
86
87 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
88 TClonesArray* lvArray = fReader->GetMomentumArray();
89 Int_t nIn = lvArray->GetEntries();
90
91 if (nIn == 0) return;
92
93 // local arrays for input
94 Float_t* ptT = new Float_t[nIn];
95 Float_t* etaT = new Float_t[nIn];
96 Float_t* phiT = new Float_t[nIn];
97 Float_t* cFlagT = new Float_t[nIn]; // Temporarily added
98 Float_t* sFlagT = new Float_t[nIn]; // Temporarily added
99 Int_t* injet = new Int_t[nIn];
100
101 //total energy in array
102 Float_t etbgTotal = 0.0;
103 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
104
105 // load input vectors and calculate total energy in array
106 for (Int_t i = 0; i < nIn; i++){
107 TLorentzVector *lv = (TLorentzVector*) lvArray->At(i);
108 ptT[i] = lv->Pt();
109 etaT[i] = lv->Eta();
110 phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi());
be6e5811 111 cFlagT[i] = fReader->GetCutFlag(i);
112 sFlagT[i] = fReader->GetSignalFlag(i);
8838ab7a 113
114 if (fReader->GetCutFlag(i) != 1) continue;
115 fLego->Fill(etaT[i], phiT[i], ptT[i]);
116 hPtTotal->Fill(ptT[i]);
117 etbgTotal+= ptT[i];
118 }
119
8838ab7a 120
121 // calculate total energy and fluctuation in map
122 Double_t meanpt = hPtTotal->GetMean();
123 Double_t ptRMS = hPtTotal->GetRMS();
124 Double_t npart = hPtTotal->GetEntries();
125 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
126
127 // arrays to hold jets
be6e5811 128 Float_t* etaJet = new Float_t[30]; // eta jet
129 Float_t* phiJet = new Float_t[30]; // phi jet
130 Float_t* etJet = new Float_t[30]; // et jet
131 Float_t* etsigJet = new Float_t[30]; // signal et in jet
8838ab7a 132 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
133 Int_t* ncellsJet = new Int_t[30];
134 Int_t* multJet = new Int_t[30];
135 //--- Added for jet reordering at the end of the jet finding procedure
136 Float_t* etaJetOk = new Float_t[30];
137 Float_t* phiJetOk = new Float_t[30];
138 Float_t* etJetOk = new Float_t[30];
be6e5811 139 Float_t* etsigJetOk = new Float_t[30]; // signal et in jet
8838ab7a 140 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
141 Int_t* ncellsJetOk = new Int_t[30];
142 Int_t* multJetOk = new Int_t[30];
143 //--------------------------
144 Int_t nJets; // to hold number of jets found by algorithm
145 Int_t nj; // number of jets accepted
146 Float_t prec = header->GetPrecBg();
147 Float_t bgprec = 1;
148 while(bgprec > prec){
149 //reset jet arrays in memory
150 memset(etaJet,0,sizeof(Float_t)*30);
151 memset(phiJet,0,sizeof(Float_t)*30);
152 memset(etJet,0,sizeof(Float_t)*30);
153 memset(etallJet,0,sizeof(Float_t)*30);
154 memset(etsigJet,0,sizeof(Float_t)*30);
155 memset(ncellsJet,0,sizeof(Int_t)*30);
156 memset(multJet,0,sizeof(Int_t)*30);
157 //--- Added for jet reordering at the end of the jet finding procedure
158 memset(etaJetOk,0,sizeof(Float_t)*30);
159 memset(phiJetOk,0,sizeof(Float_t)*30);
160 memset(etJetOk,0,sizeof(Float_t)*30);
161 memset(etallJetOk,0,sizeof(Float_t)*30);
162 memset(etsigJetOk,0,sizeof(Float_t)*30);
163 memset(ncellsJetOk,0,sizeof(Int_t)*30);
164 memset(multJetOk,0,sizeof(Int_t)*30);
165 //--------------------------
166 nJets = 0;
167 nj = 0;
168
169 // reset particles-jet array in memory
170 memset(injet,-1,sizeof(Int_t)*nIn);
171 //run cone algorithm finder
172 RunAlgoritmC(etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet);
173
174 //run background subtraction
175 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
176 nj = header->GetNAcceptJets();
177 else
178 nj = nJets;
179 //subtract background
180 Float_t etbgTotalN = 0.0; //new background
181 if(header->GetBackgMode() == 1) // standard
8838ab7a 182 SubtractBackgC(nIn,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
183 if(header->GetBackgMode() == 2) //cone
184 SubtractBackgCone(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
185 if(header->GetBackgMode() == 3) //ratio
186 SubtractBackgRatio(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
187 if(header->GetBackgMode() == 4) //statistic
188 SubtractBackgStat(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
189 //calc precision
190 if(etbgTotalN != 0.0)
191 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
192 else
193 bgprec = 0;
194 etbgTotal = etbgTotalN; // update with new background estimation
195 } //end while
196
197 // add jets to list
198 Int_t* idxjets = new Int_t[nj];
199 Int_t nselectj = 0;
200 printf("Found %d jets \n", nj);
ee7de0dd 201
8838ab7a 202 // Reorder jets by et in cone
203 Int_t * idx = new Int_t[nJets];
204 TMath::Sort(nJets, etJet, idx);
205 for(Int_t p = 0; p < nJets; p++){
206 etaJetOk[p] = etaJet[idx[p]];
207 phiJetOk[p] = phiJet[idx[p]];
208 etJetOk[p] = etJet[idx[p]];
209 etallJetOk[p] = etJet[idx[p]];
be6e5811 210 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 211 ncellsJetOk[p] = ncellsJet[idx[p]];
212 multJetOk[p] = multJet[idx[p]];
213 }
214
215 for(Int_t kj=0; kj<nj; kj++)
216 {
217 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
218 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
219 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
220 Float_t px, py,pz,en; // convert to 4-vector
221 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
222 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
223 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
224 en = TMath::Sqrt(px * px + py * py + pz * pz);
8838ab7a 225
226 AliAODJet jet(px, py, pz, en);
227 jet.Print("");
228
229 AddJet(jet);
230
231 idxjets[nselectj] = kj;
232 nselectj++;
233 }
ee7de0dd 234
8838ab7a 235 //add signal percentage and total signal in AliJets for analysis tool
236 Float_t* percentage = new Float_t[nselectj];
237 Int_t* ncells = new Int_t[nselectj];
238 Int_t* mult = new Int_t[nselectj];
239 for(Int_t i = 0; i< nselectj; i++)
240 {
241 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
242 ncells[i] = ncellsJetOk[idxjets[i]];
243 mult[i] = multJetOk[idxjets[i]];
244 }
245
246 //add particle-injet relationship ///
247 for(Int_t bj = 0; bj < nIn; bj++)
248 {
249 if(injet[bj] == -1) continue; //background particle
250 Int_t bflag = 0;
251 for(Int_t ci = 0; ci< nselectj; ci++){
252 if(injet[bj] == idxjets[ci]){
253 injet[bj]= ci;
254 bflag++;
255 break;
256 }
257 }
258 if(bflag == 0) injet[bj] = -1; // set as background particle
259 }
260
8838ab7a 261
262 //delete
263 delete[] ptT;
264 delete[] etaT;
265 delete[] phiT;
266 delete[] cFlagT;
267 delete[] sFlagT;
268 delete[] injet;
269 delete[] hPtTotal;
270 delete[] etaJet;
271 delete[] phiJet;
272 delete[] etJet;
273 delete[] etsigJet;
274 delete[] etallJet;
275 delete[] ncellsJet;
276 delete[] multJet;
277 delete[] idxjets;
278 delete[] percentage;
279 delete[] ncells;
280 delete[] mult;
281 //--- Added for jet reordering
282 delete etaJetOk;
283 delete phiJetOk;
284 delete etJetOk;
285 delete etsigJetOk;
286 delete etallJetOk;
287 delete ncellsJetOk;
288 delete multJetOk;
289 //--------------------------
290
291}
ee7de0dd 292
8838ab7a 293////////////////////////////////////////////////////////////////////////
294void AliUA1JetFinderV2::FindJets()
ee7de0dd 295{
8838ab7a 296 //
297 // Used to find jets using charged particle momentum information
298 // & neutral energy from calo cells
299 //
300 // 1) Fill cell map array
301 // 2) calculate total energy and fluctuation level
302 // 3) Run algorithm
303 // 3.1) look centroides in cell map
304 // 3.2) calculate total energy in cones
305 // 3.3) flag as a possible jet
306 // 3.4) reorder cones by energy
307 // 4) subtract backg in accepted jets
308 // 5) fill AliJet list
ee7de0dd 309
310 // transform input to pt,eta,phi plus lego
311
8838ab7a 312 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
313 TClonesArray* fUnit = fReader->GetUnitArray();
314 Int_t nCand = fReader->GetNumCandidate();
315 Int_t nCandCut = fReader->GetNumCandidateCut();
316 Int_t nIn = fUnit->GetEntries();
be6e5811 317 Float_t ptMin = fReader->GetReaderHeader()->GetPtCut();
ee7de0dd 318
be6e5811 319 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 320 if (nIn == 0) return;
321
8838ab7a 322 Int_t nCandidateCut = 0;
323 Int_t nCandidate = 0;
324
325 nCandidate = nCand;
326 nCandidateCut = nCandCut;
327
ee7de0dd 328 // local arrays for input No Cuts
329 // Both pt < ptMin and pt > ptMin
be6e5811 330 Float_t* ptT = new Float_t[nCandidate];
331 Float_t* en2T = new Float_t[nCandidate];
332 Float_t* pt2T = new Float_t[nCandidate];
333 Int_t* detT = new Int_t[nCandidate];
334 Float_t* etaT = new Float_t[nCandidate];
335 Float_t* phiT = new Float_t[nCandidate];
336 Float_t* cFlagT = new Float_t[nCandidate];
337 Float_t* cFlag2T = new Float_t[nCandidate];
338 Float_t* sFlagT = new Float_t[nCandidate];
339 Float_t* cClusterT = new Float_t[nCandidate];
340 Int_t* vectT = new Int_t[nCandidate];
341 Int_t loop1 = 0;
342 Int_t* injet = new Int_t[nCandidate];
343 Int_t* sflag = new Int_t[nCandidate];
344 TRefArray* trackRef = new TRefArray();
ee7de0dd 345
346 //total energy in array
347 Float_t etbgTotal = 0.0;
be6e5811 348 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
ee7de0dd 349
350 // Input cell info
be6e5811 351 Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
352 Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
353 Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
354 Int_t *flagCell = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
355 Float_t *etCell2 = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
356 Float_t *etaCell2 = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
357 Float_t *phiCell2 = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
8838ab7a 358 Int_t *flagCell2 = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
359
ee7de0dd 360 // Information extracted from fUnitArray
8838ab7a 361 // Load input vectors and calculate total energy in array
ee7de0dd 362 for(Int_t i=0; i<nIn; i++)
363 {
8838ab7a 364 // Recover particle information from UnitArray
365
ee7de0dd 366 AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i);
be6e5811 367 TRefArray* ref = uArray->GetUnitTrackRef();
368 Int_t nRef = ref->GetEntries();
369
ee7de0dd 370 if(uArray->GetUnitEnergy()>0.){
be6e5811 371
372 for(Int_t jpart=0; jpart<nRef;jpart++)
373 trackRef->Add((AliVTrack*)ref->At(jpart));
ee7de0dd 374 ptT[loop1] = uArray->GetUnitEnergy();
8838ab7a 375 detT[loop1] = uArray->GetUnitDetectorFlag();
ee7de0dd 376 etaT[loop1] = uArray->GetUnitEta();
377 phiT[loop1] = uArray->GetUnitPhi();
8838ab7a 378 cFlagT[loop1]= uArray->GetUnitCutFlag(); // pt cut tpc
379 cFlag2T[loop1]= uArray->GetUnitCutFlag2(); // pt cut emcal
380 sFlagT[loop1]= uArray->GetUnitSignalFlag();
be6e5811 381 vectT[loop1] = nRef;
8838ab7a 382 if(cFlagT[loop1] == 1 || cFlag2T[loop1] == 1) {
383 pt2T[loop1] = 0.;
384 en2T[loop1] = 0.;
385 if(detT[loop1]==1){
386 en2T[loop1] = ptT[loop1] - header->GetMinCellEt();
387 if(en2T[loop1] < 0) en2T[loop1]=0;
388 hPtTotal->Fill(en2T[loop1]);
389 etbgTotal += en2T[loop1];
390 }
391 if(detT[loop1]==0){ // TPC+ITS
392 Float_t pt = 0.;
be6e5811 393 for(Int_t j=0; j<nRef;j++){
8838ab7a 394 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 395 x = ((AliVTrack*)ref->At(j))->Px();
396 y = ((AliVTrack*)ref->At(j))->Py();
397 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 398 pt = TMath::Sqrt(x*x+y*y);
be6e5811 399 if(pt>ptMin) {
8838ab7a 400 pt2T[loop1] += pt;
401 en2T[loop1] += pt;
402 hPtTotal->Fill(pt);
403 etbgTotal+= pt;
404 }
405 }
406 }
407 if(detT[loop1]==2) { // EMCal
408 Float_t ptCTot = 0.;
409 Float_t pt = 0.;
410 Float_t enC = 0.;
be6e5811 411 for(Int_t j=0; j<nRef;j++){
8838ab7a 412 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 413 x = ((AliVTrack*)ref->At(j))->Px();
414 y = ((AliVTrack*)ref->At(j))->Py();
415 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 416 pt = TMath::Sqrt(x*x+y*y);
be6e5811 417 if(pt>ptMin) {
8838ab7a 418 pt2T[loop1]+=pt;
419 en2T[loop1]+=pt;
420 hPtTotal->Fill(pt);
421 etbgTotal+= pt;
422 }
423 ptCTot += pt;
424 }
425 enC = ptT[loop1] - ptCTot - header->GetMinCellEt();
426 if(enC < 0.) enC=0.;
427 en2T[loop1] += enC;
428 hPtTotal->Fill(enC);
429 etbgTotal+= enC;
430 }
ee7de0dd 431 }
432 loop1++;
433 }
ee7de0dd 434
8838ab7a 435 if(uArray->GetUnitCutFlag()==1) {
436 if(uArray->GetUnitDetectorFlag()==1){ // EMCal case
437 etCell[i] = uArray->GetUnitEnergy() - header->GetMinCellEt();
438 if ((uArray->GetUnitEnergy() - header->GetMinCellEt()) < 0.0) etCell[i]=0.;
439 etaCell[i] = uArray->GetUnitEta();
440 phiCell[i] = uArray->GetUnitPhi();
441 flagCell[i] = 0; // default
442 etCell2[i] = etCell[i];
443 etaCell2[i] = uArray->GetUnitEta();
444 phiCell2[i] = uArray->GetUnitPhi();
445 flagCell2[i] = 0; // default
446 }
447 if(uArray->GetUnitDetectorFlag()==0){ // TPC case
448 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
be6e5811 449 for(Int_t j=0; j<nRef;j++)
8838ab7a 450 {
451 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 452 x = ((AliVTrack*)ref->At(j))->Px();
453 y = ((AliVTrack*)ref->At(j))->Py();
454 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 455 pt = TMath::Sqrt(x*x+y*y);
be6e5811 456 if(pt>ptMin) {
8838ab7a 457 et1 += pt;
458 et2 += pt;
459 }
460 }
461 etCell[i] = et1;
462 etCell2[i] = et2;
463 if(et1 < 0.) etCell[i] = etCell2[i] = 0.;
464 etaCell[i] = uArray->GetUnitEta();
465 phiCell[i] = uArray->GetUnitPhi();
466 flagCell[i] = 0; // default
467 etaCell2[i] = uArray->GetUnitEta();
468 phiCell2[i] = uArray->GetUnitPhi();
469 flagCell2[i] = 0; // default
470 }
471 if(uArray->GetUnitDetectorFlag()==2){ // TPC + EMCal case
472 Float_t ptCTot = 0.;
473 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
474 Float_t enC = 0.;
be6e5811 475 for(Int_t j=0; j<nRef;j++)
8838ab7a 476 {
477 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 478 x = ((AliVTrack*)ref->At(j))->Px();
479 y = ((AliVTrack*)ref->At(j))->Py();
480 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 481 pt = TMath::Sqrt(x*x+y*y);
be6e5811 482 if(pt>ptMin) {
8838ab7a 483 et1 += pt;
484 et2 += pt;
485 }
486 ptCTot += pt;
487 }
488 enC = uArray->GetUnitEnergy() - ptCTot;
489 etCell[i] = et1 + enC - header->GetMinCellEt();
490 etCell2[i] = et2 + enC - header->GetMinCellEt();
491 if((enC + et1 - header->GetMinCellEt()) < 0.) etCell[i] = etCell2[i] = 0.;
492 etaCell[i] = uArray->GetUnitEta();
493 phiCell[i] = uArray->GetUnitPhi();
494 flagCell[i] = 0; // default
495 etaCell2[i] = uArray->GetUnitEta();
496 phiCell2[i] = uArray->GetUnitPhi();
497 flagCell2[i] = 0; // default
498 }
499 }
500 else {
501 etCell[i] = 0.;
502 etaCell[i] = uArray->GetUnitEta();
503 phiCell[i] = uArray->GetUnitPhi();
504 flagCell[i] = 0;
505 etCell2[i] = 0.;
506 etaCell2[i] = uArray->GetUnitEta();
507 phiCell2[i] = uArray->GetUnitPhi();
508 flagCell2[i] = 0;
509 }
510 } // end loop on nCandidate
511
ee7de0dd 512
513 // calculate total energy and fluctuation in map
514 Double_t meanpt = hPtTotal->GetMean();
515 Double_t ptRMS = hPtTotal->GetRMS();
516 Double_t npart = hPtTotal->GetEntries();
517 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
518
519 // arrays to hold jets
8838ab7a 520 Float_t* etaJet = new Float_t[30];
521 Float_t* phiJet = new Float_t[30];
522 Float_t* etJet = new Float_t[30];
ee7de0dd 523 Float_t* etsigJet = new Float_t[30]; //signal et in jet
8838ab7a 524 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
525 Int_t* ncellsJet = new Int_t[30];
526 Int_t* multJet = new Int_t[30];
527 //--- Added by me for jet reordering at the end of the jet finding procedure
528 Float_t* etaJetOk = new Float_t[30];
529 Float_t* phiJetOk = new Float_t[30];
530 Float_t* etJetOk = new Float_t[30];
531 Float_t* etsigJetOk = new Float_t[30]; //signal et in jet
532 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
533 Int_t* ncellsJetOk = new Int_t[30];
534 Int_t* multJetOk = new Int_t[30];
535 //--------------------------
536 Int_t nJets; // to hold number of jets found by algorithm
537 Int_t nj; // number of jets accepted
538 Float_t prec = header->GetPrecBg();
539 Float_t bgprec = 1;
540
ee7de0dd 541 while(bgprec > prec){
ee7de0dd 542
8838ab7a 543 //reset jet arrays in memory
544 memset(etaJet,0,sizeof(Float_t)*30);
545 memset(phiJet,0,sizeof(Float_t)*30);
546 memset(etJet,0,sizeof(Float_t)*30);
547 memset(etallJet,0,sizeof(Float_t)*30);
548 memset(etsigJet,0,sizeof(Float_t)*30);
549 memset(ncellsJet,0,sizeof(Int_t)*30);
550 memset(multJet,0,sizeof(Int_t)*30);
551 //--- Added by me for jet reordering at the end of the jet finding procedure
552 memset(etaJetOk,0,sizeof(Float_t)*30);
553 memset(phiJetOk,0,sizeof(Float_t)*30);
554 memset(etJetOk,0,sizeof(Float_t)*30);
555 memset(etallJetOk,0,sizeof(Float_t)*30);
556 memset(etsigJetOk,0,sizeof(Float_t)*30);
557 memset(ncellsJetOk,0,sizeof(Int_t)*30);
558 memset(multJetOk,0,sizeof(Int_t)*30);
559
560 nJets = 0;
561 nj = 0;
562
563 // reset particles-jet array in memory
564 memset(injet,-1,sizeof(Int_t)*nCandidate);
565 //run cone algorithm finder
566 RunAlgoritm(nIn,etCell,etaCell,phiCell,flagCell,etCell2,etaCell2,phiCell2,
567 flagCell2,etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,
568 etallJet,ncellsJet);
569
570 //run background subtraction
571 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
572 nj = header->GetNAcceptJets();
573 else
574 nj = nJets;
575
576 //subtract background
577 Float_t etbgTotalN = 0.0; //new background
578 if(header->GetBackgMode() == 1) // standard
579 SubtractBackg(nCandidate,nj,etbgTotalN,en2T,vectT,etaT,phiT,cFlagT,cFlag2T,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
580 // To be modified ------------------------
581 if(header->GetBackgMode() == 2) //cone
582 SubtractBackgCone(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
583 if(header->GetBackgMode() == 3) //ratio
584 SubtractBackgRatio(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
585 if(header->GetBackgMode() == 4) //statistic
586 SubtractBackgStat(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
587 //----------------------------------------
588 //calc precision
589 if(etbgTotalN != 0.0)
590 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
591 else
592 bgprec = 0;
593 etbgTotal = etbgTotalN; // update with new background estimation
594 } //end while
595
ee7de0dd 596 // add jets to list
597 Int_t* idxjets = new Int_t[nj];
598 Int_t nselectj = 0;
599 printf("Found %d jets \n", nj);
600
8838ab7a 601 // Reorder jets by et in cone
602 // Sort jets by energy
603 Int_t * idx = new Int_t[nJets];
604 TMath::Sort(nJets, etJet, idx);
605 for(Int_t p = 0; p < nJets; p++)
606 {
607 etaJetOk[p] = etaJet[idx[p]];
608 phiJetOk[p] = phiJet[idx[p]];
609 etJetOk[p] = etJet[idx[p]];
610 etallJetOk[p] = etJet[idx[p]];
be6e5811 611 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 612 ncellsJetOk[p] = ncellsJet[idx[p]];
613 multJetOk[p] = multJet[idx[p]];
614 }
615
e36a3f22 616 TRefArray *refs = 0;
617 Bool_t fromAod = !strcmp(fReader->ClassName(),"AliJetAODReader");
618 if (fromAod) refs = fReader->GetReferences();
619 Int_t nTracks = 0;
620 if (fromAod) nTracks = ((TRefArray*)refs)->GetEntries();
621 Int_t* trackinjet = new Int_t[nTracks];
622 for(Int_t it=0; it<nTracks; it++) trackinjet[it]=-1;
623
8838ab7a 624 for(Int_t kj=0; kj<nj; kj++)
625 {
626 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
627 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
628 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
ee7de0dd 629 Float_t px, py,pz,en; // convert to 4-vector
8838ab7a 630 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
631 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
632 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
ee7de0dd 633 en = TMath::Sqrt(px * px + py * py + pz * pz);
42b0ac89 634
ee7de0dd 635 AliAODJet jet(px, py, pz, en);
636 jet.Print("");
637
e36a3f22 638 if (fromAod){
639 for(Int_t jpart = 0; jpart < nTracks; jpart++) { // loop for all particles in array
640 Float_t deta = ((AliAODTrack*)refs->At(jpart))->Eta() - etaJetOk[kj];
641 Float_t dphi = ((AliAODTrack*)refs->At(jpart))->Phi() - phiJetOk[kj];
642 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
643 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
644
645 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
646 if(dr <= header->GetRadius() && fReader->GetCutFlag(jpart) == 1) // particles inside this cone
647 if(trackinjet[jpart]==-1) trackinjet[jpart] = kj;
648 else if(fDebug>10) printf("The track already belongs to jet %d \n",trackinjet[jpart]);
649 if(trackinjet[jpart]==kj)
650 jet.AddTrack(refs->At(jpart)); // check if the particle belongs to the jet and add the ref
651 }
652 }
653
ee7de0dd 654 AddJet(jet);
655
656 idxjets[nselectj] = kj;
657 nselectj++;
8838ab7a 658 }
659
ee7de0dd 660 //add signal percentage and total signal in AliJets for analysis tool
661 Float_t* percentage = new Float_t[nselectj];
662 Int_t* ncells = new Int_t[nselectj];
663 Int_t* mult = new Int_t[nselectj];
8838ab7a 664 for(Int_t i = 0; i< nselectj; i++)
665 {
666 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
667 ncells[i] = ncellsJetOk[idxjets[i]];
668 mult[i] = multJetOk[idxjets[i]];
669 }
670
671 //add particle-injet relationship ///
672 for(Int_t bj = 0; bj < nCandidate; bj++)
673 {
674 if(injet[bj] == -1) continue; //background particle
675 Int_t bflag = 0;
676 for(Int_t ci = 0; ci< nselectj; ci++){
677 if(injet[bj] == idxjets[ci]){
678 injet[bj]= ci;
679 bflag++;
680 break;
681 }
682 }
683 if(bflag == 0) injet[bj] = -1; // set as background particle
ee7de0dd 684 }
8838ab7a 685
ee7de0dd 686
687 //delete
ee7de0dd 688 delete ptT;
8838ab7a 689 delete en2T;
690 delete pt2T;
ee7de0dd 691 delete etaT;
692 delete phiT;
be6e5811 693 trackRef->Delete();
694 delete trackRef;
8838ab7a 695 delete detT;
ee7de0dd 696 delete cFlagT;
8838ab7a 697 delete cFlag2T;
698 delete sFlagT;
ee7de0dd 699 delete cClusterT;
8838ab7a 700 delete vectT;
ee7de0dd 701 delete injet;
702 delete sflag;
703 delete hPtTotal;
704 delete etCell;
705 delete etaCell;
706 delete phiCell;
707 delete flagCell;
8838ab7a 708 delete etCell2;
709 delete etaCell2;
710 delete phiCell2;
711 delete flagCell2;
ee7de0dd 712 delete etaJet;
713 delete phiJet;
714 delete etJet;
715 delete etsigJet;
716 delete etallJet;
717 delete ncellsJet;
718 delete multJet;
8838ab7a 719 //--- Added for jet reordering
720 delete etaJetOk;
721 delete phiJetOk;
722 delete etJetOk;
723 delete etsigJetOk;
724 delete etallJetOk;
725 delete ncellsJetOk;
726 delete multJetOk;
727 //--------------------------
e36a3f22 728 delete trackinjet;
ee7de0dd 729 delete idxjets;
730 delete percentage;
731 delete ncells;
732 delete mult;
733
ee7de0dd 734}
735
736////////////////////////////////////////////////////////////////////////
ee7de0dd 737void AliUA1JetFinderV2::RunAlgoritm(Int_t nIn, Float_t* etCell, Float_t* etaCell, Float_t* phiCell,
be6e5811 738 Int_t* flagCell, const Float_t* etCell2, const Float_t* etaCell2,
739 const Float_t* phiCell2, const Int_t* flagCell2, Float_t etbgTotal,
740 Double_t dEtTotal, Int_t& nJets, Float_t* etJet,Float_t* etaJet,
741 Float_t* phiJet, Float_t* etallJet, Int_t* ncellsJet)
ee7de0dd 742{
be6e5811 743 //
744 // Main method for jet finding
745 // UA1 base cone finder
746 //
747
8838ab7a 748 Int_t nCell = nIn;
be6e5811 749 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 750
8838ab7a 751 // Dump lego
752 // Check enough space! *to be done*
ee7de0dd 753 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 754 for(Int_t i=0; i<nCell; i++){
755 etCell[i] = etCell2[i];
756 etaCell[i] = etaCell2[i];
757 phiCell[i] = phiCell2[i];
758 flagCell[i] = flagCell2[i];
759 }
ee7de0dd 760
761 // Parameters from header
762 Float_t minmove = header->GetMinMove();
763 Float_t maxmove = header->GetMaxMove();
764 Float_t rc = header->GetRadius();
765 Float_t etseed = header->GetEtSeed();
766
8838ab7a 767 // Tmp array of jets form algoritm
ee7de0dd 768 Float_t etaAlgoJet[30];
769 Float_t phiAlgoJet[30];
770 Float_t etAlgoJet[30];
771 Int_t ncellsAlgoJet[30];
772
8838ab7a 773 // Run algorithm//
ee7de0dd 774
8838ab7a 775 // Sort cells by et
ee7de0dd 776 Int_t * index = new Int_t[nCell];
777 TMath::Sort(nCell, etCell, index);
778
8838ab7a 779 // Variable used in centroide loop
9dda5307 780 Float_t eta = 0.0;
781 Float_t phi = 0.0;
782 Float_t eta0 = 0.0;
783 Float_t phi0 = 0.0;
784 Float_t etab = 0.0;
785 Float_t phib = 0.0;
786 Float_t etas = 0.0;
787 Float_t phis = 0.0;
788 Float_t ets = 0.0;
789 Float_t deta = 0.0;
790 Float_t dphi = 0.0;
791 Float_t dr = 0.0;
792 Float_t etsb = 0.0;
ee7de0dd 793 Float_t etasb = 0.0;
794 Float_t phisb = 0.0;
9dda5307 795 Float_t dphib = 0.0;
ee7de0dd 796
8838ab7a 797 for(Int_t icell = 0; icell < nCell; icell++)
798 {
9dda5307 799 Int_t jcell = index[icell];
800 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
801 if(flagCell[jcell] != 0) continue; // if cell was used before
8838ab7a 802
9dda5307 803 eta = etaCell[jcell];
804 phi = phiCell[jcell];
805 eta0 = eta;
806 phi0 = phi;
807 etab = eta;
808 phib = phi;
809 ets = etCell[jcell];
810 etas = 0.0;
811 phis = 0.0;
812 etsb = ets;
813 etasb = 0.0;
814 phisb = 0.0;
8838ab7a 815 for(Int_t kcell =0; kcell < nCell; kcell++)
816 {
9dda5307 817 Int_t lcell = index[kcell];
818 if(lcell == jcell) continue; // cell itself
819 if(flagCell[lcell] != 0) continue; // cell used before
8838ab7a 820 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
9dda5307 821 //calculate dr
822 deta = etaCell[lcell] - eta;
8838ab7a 823 dphi = TMath::Abs(phiCell[lcell] - phi);
9dda5307 824 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
825 dr = TMath::Sqrt(deta * deta + dphi * dphi);
826 if(dr <= rc){
8838ab7a 827 // calculate offset from initiate cell
828 deta = etaCell[lcell] - eta0;
829 dphi = phiCell[lcell] - phi0;
830 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
831 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
832 etas = etas + etCell[lcell]*deta;
833 phis = phis + etCell[lcell]*dphi;
834 ets = ets + etCell[lcell];
835 //new weighted eta and phi including this cell
836 eta = eta0 + etas/ets;
837 phi = phi0 + phis/ets;
838 // if cone does not move much, just go to next step
839 dphib = TMath::Abs(phi - phib);
840 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
841 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
842 if(dr <= minmove) break;
843 // cone should not move more than max_mov
844 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
845 if(dr > maxmove){
846 eta = etab;
847 phi = phib;
848 ets = etsb;
849 etas = etasb;
850 phis = phisb;
851 } else { // store this loop information
852 etab = eta;
853 phib = phi;
854 etsb = ets;
855 etasb = etas;
856 phisb = phis;
857 }
858 } // inside cone
ee7de0dd 859 }//end of cells loop looking centroide
860
861 //avoid cones overloap (to be implemented in the future)
862
863 //flag cells in Rc, estimate total energy in cone
8838ab7a 864 Float_t etCone = 0.0;
865 Int_t nCellIn = 0;
866 Int_t nCellOut = 0;
867 rc = header->GetRadius();
868
869 for(Int_t ncell =0; ncell < nCell; ncell++)
870 {
871 if(flagCell[ncell] != 0) continue; // cell used before
872 //calculate dr
873 deta = etaCell[ncell] - eta;
874 // if(deta <= rc){ // Added to improve velocity -> to be tested
875 dphi = phiCell[ncell] - phi;
876 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
877 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
878 // if(dphi <= rc){ // Added to improve velocity -> to be tested
879 dr = TMath::Sqrt(deta * deta + dphi * dphi);
880 if(dr <= rc){ // cell in cone
881 flagCell[ncell] = -1;
882 etCone+=etCell[ncell];
883 nCellIn++;
884 }
885 else nCellOut++;
886 // } // end deta <= rc
887 // } // end dphi <= rc
ee7de0dd 888 }
889
8838ab7a 890 // select jets with et > background
891 // estimate max fluctuation of background in cone
892 Double_t ncellin = (Double_t)nCellIn;
893 Double_t ntcell = (Double_t)nCell;
894 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/(ntcell));
895 // min cone et
896 Double_t etcmin = etCone ; // could be used etCone - etmin !!
897 //decisions !! etbmax < etcmin
898
899 for(Int_t mcell =0; mcell < nCell; mcell++)
900 {
901 if(flagCell[mcell] == -1){
902 if(etbmax < etcmin)
903 flagCell[mcell] = 1; //flag cell as used
904 else
905 flagCell[mcell] = 0; // leave it free
906 }
ee7de0dd 907 }
8838ab7a 908 //store tmp jet info !!!
909 if(etbmax < etcmin)
910 {
911 etaAlgoJet[nJets] = eta;
912 phiAlgoJet[nJets] = phi;
913 etAlgoJet[nJets] = etCone;
914 ncellsAlgoJet[nJets] = nCellIn;
915 nJets++;
916 }
917
918 } // end of cells loop
919
920 for(Int_t p = 0; p < nJets; p++)
921 {
922 etaJet[p] = etaAlgoJet[p];
923 phiJet[p] = phiAlgoJet[p];
924 etJet[p] = etAlgoJet[p];
925 etallJet[p] = etAlgoJet[p];
926 ncellsJet[p] = ncellsAlgoJet[p];
927 }
928
929 //delete
930 delete index;
931
932}
933
934////////////////////////////////////////////////////////////////////////
935void AliUA1JetFinderV2::RunAlgoritmC(Float_t etbgTotal, Double_t dEtTotal, Int_t& nJets,
936 Float_t* etJet,Float_t* etaJet, Float_t* phiJet,
937 Float_t* etallJet, Int_t* ncellsJet)
938{
939 // Dump lego
940 // Check enough space! *to be done*
941 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
942 Float_t etCell[60000]; //! Cell Energy
943 Float_t etaCell[60000]; //! Cell eta
944 Float_t phiCell[60000]; //! Cell phi
945 Int_t flagCell[60000]; //! Cell flag
946
947 Int_t nCell = 0;
948 TAxis* xaxis = fLego->GetXaxis();
949 TAxis* yaxis = fLego->GetYaxis();
950 Float_t e = 0.0;
951 for (Int_t i = 1; i <= header->GetLegoNbinEta(); i++)
952 {
953 for (Int_t j = 1; j <= header->GetLegoNbinPhi(); j++)
954 {
955 e = fLego->GetBinContent(i,j);
956 if (e < 0.0) continue; // don't include this cells
957 Float_t eta = xaxis->GetBinCenter(i);
958 Float_t phi = yaxis->GetBinCenter(j);
959 etCell[nCell] = e;
960 etaCell[nCell] = eta;
961 phiCell[nCell] = phi;
962 flagCell[nCell] = 0; //default
963 nCell++;
964 }
965 }
966
967 // Parameters from header
968 Float_t minmove = header->GetMinMove();
969 Float_t maxmove = header->GetMaxMove();
970 Float_t rc = header->GetRadius();
971 Float_t etseed = header->GetEtSeed();
972
973 // Tmp array of jets form algoritm
974 Float_t etaAlgoJet[30];
975 Float_t phiAlgoJet[30];
976 Float_t etAlgoJet[30];
977 Int_t ncellsAlgoJet[30];
978
979 // Run algorithm//
980
981 // Sort cells by et
982 Int_t * index = new Int_t[nCell];
983 TMath::Sort(nCell, etCell, index);
984 // variable used in centroide loop
985 Float_t eta = 0.0;
986 Float_t phi = 0.0;
987 Float_t eta0 = 0.0;
988 Float_t phi0 = 0.0;
989 Float_t etab = 0.0;
990 Float_t phib = 0.0;
991 Float_t etas = 0.0;
992 Float_t phis = 0.0;
993 Float_t ets = 0.0;
994 Float_t deta = 0.0;
995 Float_t dphi = 0.0;
996 Float_t dr = 0.0;
997 Float_t etsb = 0.0;
998 Float_t etasb = 0.0;
999 Float_t phisb = 0.0;
1000 Float_t dphib = 0.0;
ee7de0dd 1001
8838ab7a 1002 for(Int_t icell = 0; icell < nCell; icell++)
1003 {
1004 Int_t jcell = index[icell];
1005 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
1006 if(flagCell[jcell] != 0) continue; // if cell was used before
1007
1008 eta = etaCell[jcell];
1009 phi = phiCell[jcell];
1010 eta0 = eta;
1011 phi0 = phi;
1012 etab = eta;
1013 phib = phi;
1014 ets = etCell[jcell];
1015 etas = 0.0;
1016 phis = 0.0;
1017 etsb = ets;
1018 etasb = 0.0;
1019 phisb = 0.0;
1020 for(Int_t kcell =0; kcell < nCell; kcell++)
1021 {
1022 Int_t lcell = index[kcell];
1023 if(lcell == jcell) continue; // cell itself
1024 if(flagCell[lcell] != 0) continue; // cell used before
1025 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
1026 //calculate dr
1027 deta = etaCell[lcell] - eta;
1028 dphi = TMath::Abs(phiCell[lcell] - phi);
1029 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1030 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1031 if(dr <= rc)
1032 {
1033 // calculate offset from initiate cell
1034 deta = etaCell[lcell] - eta0;
1035 dphi = phiCell[lcell] - phi0;
1036 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
1037 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
1038 etas = etas + etCell[lcell]*deta;
1039 phis = phis + etCell[lcell]*dphi;
1040 ets = ets + etCell[lcell];
1041 //new weighted eta and phi including this cell
1042 eta = eta0 + etas/ets;
1043 phi = phi0 + phis/ets;
1044 // if cone does not move much, just go to next step
1045 dphib = TMath::Abs(phi - phib);
1046 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
1047 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
1048 if(dr <= minmove) break;
1049 // cone should not move more than max_mov
1050 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
1051 if(dr > maxmove){
1052 eta = etab;
1053 phi = phib;
1054 ets = etsb;
1055 etas = etasb;
1056 phis = phisb;
1057 } else { // store this loop information
1058 etab=eta;
1059 phib=phi;
1060 etsb = ets;
1061 etasb = etas;
1062 phisb = phis;
1063 }
1064 } // inside cone
1065 }//end of cells loop looking centroide
1066
1067 // Avoid cones overloap (to be implemented in the future)
1068
1069 // Flag cells in Rc, estimate total energy in cone
1070 Float_t etCone = 0.0;
1071 Int_t nCellIn = 0;
1072 Int_t nCellOut = 0;
1073 rc = header->GetRadius();
1074 for(Int_t ncell =0; ncell < nCell; ncell++)
1075 {
1076 if(flagCell[ncell] != 0) continue; // cell used before
1077 //calculate dr
1078 deta = etaCell[ncell] - eta;
1079 dphi = phiCell[ncell] - phi;
1080 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1081 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1082 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1083 if(dr <= rc){ // cell in cone
1084 flagCell[ncell] = -1;
1085 etCone+=etCell[ncell];
1086 nCellIn++;
1087 }
1088 else nCellOut++;
1089 }
1090
1091 // Select jets with et > background
1092 // estimate max fluctuation of background in cone
1093 Double_t ncellin = (Double_t)nCellIn;
1094 Double_t ntcell = (Double_t)nCell;
1095 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell);
1096 // min cone et
1097 Double_t etcmin = etCone ; // could be used etCone - etmin !!
1098 //decisions !! etbmax < etcmin
1099
1100 for(Int_t mcell =0; mcell < nCell; mcell++){
1101 if(flagCell[mcell] == -1){
1102 if(etbmax < etcmin)
1103 flagCell[mcell] = 1; //flag cell as used
1104 else
1105 flagCell[mcell] = 0; // leave it free
1106 }
1107 }
1108 //store tmp jet info !!!
1109
1110 if(etbmax < etcmin) {
1111 etaAlgoJet[nJets] = eta;
1112 phiAlgoJet[nJets] = phi;
1113 etAlgoJet[nJets] = etCone;
1114 ncellsAlgoJet[nJets] = nCellIn;
1115 nJets++;
1116 }
1117
1118 } // end of cells loop
ee7de0dd 1119
1120 //reorder jets by et in cone
1121 //sort jets by energy
1122 Int_t * idx = new Int_t[nJets];
1123 TMath::Sort(nJets, etAlgoJet, idx);
8838ab7a 1124 for(Int_t p = 0; p < nJets; p++)
1125 {
1126 etaJet[p] = etaAlgoJet[idx[p]];
1127 phiJet[p] = phiAlgoJet[idx[p]];
1128 etJet[p] = etAlgoJet[idx[p]];
1129 etallJet[p] = etAlgoJet[idx[p]];
1130 ncellsJet[p] = ncellsAlgoJet[idx[p]];
1131 }
1132
ee7de0dd 1133 //delete
1134 delete index;
1135 delete idx;
1136
1137}
ee7de0dd 1138
8838ab7a 1139////////////////////////////////////////////////////////////////////////
be6e5811 1140void AliUA1JetFinderV2::SubtractBackg(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN, const Float_t* ptT,
1141 const Int_t*vectT, const Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT,
1142 const Float_t* cFlag2T, const Float_t* sFlagT, Float_t* etJet, const Float_t* etaJet,
1143 const Float_t* phiJet, Float_t* etsigJet, Int_t* multJet, Int_t* injet)
ee7de0dd 1144{
8838ab7a 1145 //
1146 // Background subtraction using cone method but without correction in dE/deta distribution
1147 // Cases to take into account the EMCal geometry are included
1148 //
1149
ee7de0dd 1150 //calculate energy inside and outside cones
1151 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
08c28025 1152 fOpt = fReader->GetReaderHeader()->GetDetector();
be6e5811 1153 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 1154 Float_t rc= header->GetRadius();
1155 Float_t etIn[30];
1156 Float_t etOut = 0;
8838ab7a 1157
1158 for(Int_t j=0;j<30;j++){etIn[j]=0.;}
1159
ee7de0dd 1160 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
8838ab7a 1161
1162 for(Int_t ijet=0; ijet<nJ; ijet++){
1163
1164 Float_t deta = etaT[jpart] - etaJet[ijet];
1165 Float_t dphi = phiT[jpart] - phiJet[ijet];
1166 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1167 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1168
1169 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1170 if(dr <= rc){ // particles inside this cone
1171 multJet[ijet]+=vectT[jpart];
1172 injet[jpart] = ijet;
1173
1174 if(cFlagT[jpart] == 1 || cFlag2T[jpart] == 1){ // pt cut
1175 etIn[ijet] += ptT[jpart];
1176 if(sFlagT[jpart] == 1) etsigJet[ijet]+= ptT[jpart];
1177 }
1178 break;
1179 }
1180 }// end jets loop
1181
1182 if(injet[jpart] == -1 && (cFlagT[jpart] == 1 || cFlag2T[jpart] == 1)){
1183 etOut += ptT[jpart]; // particle outside cones and pt cut
1184 }
ee7de0dd 1185 } //end particle loop
1186
1187 //estimate jets and background areas
8838ab7a 1188 // TPC case
1189 if(fOpt == 0 || fOpt == 1){
1190 Float_t areaJet[30];
1191 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1192
1193 for(Int_t k=0; k<nJ; k++){
ee7de0dd 1194 Float_t detamax = etaJet[k] + rc;
1195 Float_t detamin = etaJet[k] - rc;
1196 Float_t accmax = 0.0; Float_t accmin = 0.0;
1197 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1198 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1199 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1200 }
1201 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1202 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1203 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1204 }
1205 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1206 areaOut = areaOut - areaJet[k];
8838ab7a 1207 }
1208 //subtract background using area method
1209 for(Int_t ljet=0; ljet<nJ; ljet++){
1210 Float_t areaRatio = areaJet[ljet]/areaOut;
1211 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1212 }
1213
1214 // estimate new total background
1215 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1216 etbgTotalN = etOut*areaT/areaOut;
1217 }
1218 else { // If EMCal included
1219 Float_t areaJet[30];
1220 Float_t areaOut = 2*(header->GetLegoEtaMax())*(header->GetLegoPhiMax() - header->GetLegoPhiMin());
1221 for(Int_t k=0; k<nJ; k++){
1222 Float_t detamax = etaJet[k] + rc;
1223 Float_t detamin = etaJet[k] - rc;
1224 Float_t dphimax = phiJet[k] + rc;
1225 Float_t dphimin = phiJet[k] - rc;
1226 Float_t eMax = header->GetLegoEtaMax();
1227 Float_t eMin = header->GetLegoEtaMin();
1228 Float_t pMax = header->GetLegoPhiMax();
1229 Float_t pMin = header->GetLegoPhiMin();
1230 Float_t accetamax = 0.0; Float_t accetamin = 0.0;
1231 Float_t accphimax = 0.0; Float_t accphimin = 0.0;
1232 if((detamax > eMax && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1233 (detamax > eMax && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1234 Float_t h = eMax - etaJet[k];
1235 accetamax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1236 }
1237 if((detamin < eMin && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1238 (detamin < eMin && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1239 Float_t h = eMax + etaJet[k];
1240 accetamin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1241 }
1242 if((dphimax > pMax && detamax >= (eMin+2*rc) && detamax <= eMax )||
1243 (dphimax > pMax && detamin <= (eMax-2*rc) && detamin >= eMin )){
1244 Float_t h = pMax - phiJet[k];
1245 accphimax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1246 }
1247 if((dphimin < eMin && detamax >= (eMin+2*rc) && detamax <= eMax )||
1248 (dphimin < eMin && detamin <= (eMax-2*rc) && detamin >= eMin )){
1249 Float_t h = phiJet[k] - pMin;
1250 accphimin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1251 }
1252
1253 if(detamax > eMax && dphimax > pMax ){
1254 Float_t he = eMax - etaJet[k];
1255 Float_t hp = pMax - phiJet[k];
1256 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1257 Float_t alphae = TMath::ACos(he/rc);
1258 Float_t alphap = TMath::ACos(hp/rc);
1259 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1260 if(rlim <= rc){
1261 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1262 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1263 }
1264 if(rlim > rc){
1265 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1266 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1267 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1268 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1269 }
1270 }
1271
1272 if(detamax > eMax && dphimin < pMin ){
1273 Float_t he = eMax - etaJet[k];
1274 Float_t hp = phiJet[k] - pMin;
1275 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1276 Float_t alphae = TMath::ACos(he/rc);
1277 Float_t alphap = TMath::ACos(hp/rc);
1278 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1279 if(rlim <= rc){
1280 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1281 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1282 }
1283 if(rlim > rc){
1284 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1285 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1286 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1287 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1288 }
1289 }
1290
1291 if(detamin < eMin && dphimax > pMax ){
1292 Float_t he = eMax + etaJet[k];
1293 Float_t hp = pMax - phiJet[k];
1294 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1295 Float_t alphae = TMath::ACos(he/rc);
1296 Float_t alphap = TMath::ACos(hp/rc);
1297 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1298 if(rlim <= rc){
1299 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1300 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1301 }
1302 if(rlim > rc){
1303 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1304 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1305 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1306 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1307 }
1308 }
1309
1310 if(detamin < eMin && dphimin < pMin ){
1311 Float_t he = eMax + etaJet[k];
1312 Float_t hp = phiJet[k] - pMin;
1313 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1314 Float_t alphae = TMath::ACos(he/rc);
1315 Float_t alphap = TMath::ACos(hp/rc);
1316 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1317 if(rlim <= rc){
1318 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1319 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1320 }
1321 if(rlim > rc){
1322 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1323 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1324 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1325 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1326 }
1327 }
1328 areaJet[k] = rc*rc*TMath::Pi() - accetamax - accetamin - accphimax - accphimin;
1329 areaOut = areaOut - areaJet[k];
1330 } // end loop on jets
1331
1332 //subtract background using area method
1333 for(Int_t ljet=0; ljet<nJ; ljet++){
1334 Float_t areaRatio = areaJet[ljet]/areaOut;
1335 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1336 }
1337
1338 // estimate new total background
1339 Float_t areaT = 2*(header->GetLegoEtaMax()*header->GetLegoPhiMax());
1340 etbgTotalN = etOut*areaT/areaOut;
1341 }
1342
1343}
1344
1345////////////////////////////////////////////////////////////////////////
be6e5811 1346void AliUA1JetFinderV2::SubtractBackgC(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN,
1347 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT,
1348 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1349 Int_t* multJet, Int_t* injet)
1350{
1351 //background subtraction using cone method but without correction in dE/deta distribution
1352
1353 //calculate energy inside and outside cones
1354 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1355 Float_t rc= header->GetRadius();
1356 Float_t etIn[30];
1357 Float_t etOut = 0;
1358 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1359 // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut
1360 for(Int_t ijet=0; ijet<nJ; ijet++){
1361 Float_t deta = etaT[jpart] - etaJet[ijet];
1362 Float_t dphi = phiT[jpart] - phiJet[ijet];
1363 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1364 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1365 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1366 if(dr <= rc){ // particles inside this cone
1367 multJet[ijet]++;
1368 injet[jpart] = ijet;
1369 if((fReader->GetCutFlag(jpart)) == 1){ // pt cut
1370 etIn[ijet] += ptT[jpart];
1371 if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart];
1372 }
1373 break;
1374 }
1375 }// end jets loop
1376 if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1)
1377 etOut += ptT[jpart]; // particle outside cones and pt cut
1378 } //end particle loop
1379
1380 //estimate jets and background areas
1381 Float_t areaJet[30];
1382 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1383 for(Int_t k=0; k<nJ; k++){
1384 Float_t detamax = etaJet[k] + rc;
1385 Float_t detamin = etaJet[k] - rc;
1386 Float_t accmax = 0.0; Float_t accmin = 0.0;
1387 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
1388 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1389 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1390 }
1391 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
1392 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1393 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1394 }
1395 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1396 areaOut = areaOut - areaJet[k];
ee7de0dd 1397 }
1398 //subtract background using area method
1399 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1400 Float_t areaRatio = areaJet[ljet]/areaOut;
1401 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
ee7de0dd 1402 }
8838ab7a 1403
ee7de0dd 1404 // estimate new total background
1405 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1406 etbgTotalN = etOut*areaT/areaOut;
8838ab7a 1407
ee7de0dd 1408}
1409
ee7de0dd 1410
8838ab7a 1411////////////////////////////////////////////////////////////////////////
be6e5811 1412void AliUA1JetFinderV2::SubtractBackgStat(const Int_t& nIn, const Int_t&nJ,Float_t&etbgTotalN,
1413 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT,
1414 const Float_t* sFlagT, Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet,
1415 Float_t* etsigJet, Int_t* multJet, Int_t* injet)
ee7de0dd 1416{
1417
1418 //background subtraction using statistical method
1419 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1420 Float_t etbgStat = header->GetBackgStat(); // pre-calculated background
8838ab7a 1421
ee7de0dd 1422 //calculate energy inside
1423 Float_t rc= header->GetRadius();
1424 Float_t etIn[30];
8838ab7a 1425
1426 for(Int_t jpart = 0; jpart < nIn; jpart++)
1427 { // loop for all particles in array
1428
1429 for(Int_t ijet=0; ijet<nJ; ijet++)
1430 {
1431 Float_t deta = etaT[jpart] - etaJet[ijet];
1432 Float_t dphi = phiT[jpart] - phiJet[ijet];
1433 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1434 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1435 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1436 if(dr <= rc){ // particles inside this cone
1437 multJet[ijet]++;
1438 injet[jpart] = ijet;
1439 if(cFlagT[jpart] == 1){ // pt cut
1440 etIn[ijet]+= ptT[jpart];
1441 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1442 }
1443 break;
1444 }
1445 }// end jets loop
1446 } //end particle loop
1447
ee7de0dd 1448 //calc jets areas
1449 Float_t areaJet[30];
1450 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
8838ab7a 1451 for(Int_t k=0; k<nJ; k++)
1452 {
ee7de0dd 1453 Float_t detamax = etaJet[k] + rc;
1454 Float_t detamin = etaJet[k] - rc;
1455 Float_t accmax = 0.0; Float_t accmin = 0.0;
1456 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1457 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1458 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1459 }
1460 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1461 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1462 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1463 }
1464 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
8838ab7a 1465 }
ee7de0dd 1466
1467 //subtract background using area method
1468 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1469 Float_t areaRatio = areaJet[ljet]/areaOut;
1470 etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction
ee7de0dd 1471 }
8838ab7a 1472
ee7de0dd 1473 etbgTotalN = etbgStat;
ee7de0dd 1474}
1475
1476////////////////////////////////////////////////////////////////////////
be6e5811 1477void AliUA1JetFinderV2::SubtractBackgCone(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN, Float_t* ptT,
1478 Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT, const Float_t* sFlagT,
1479 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1480 Int_t* multJet, Int_t* injet)
ee7de0dd 1481{
8838ab7a 1482 // Cone background subtraction method taking into acount dEt/deta distribution
1483 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1484 //general
1485 Float_t rc= header->GetRadius();
1486 Float_t etamax = header->GetLegoEtaMax();
1487 Float_t etamin = header->GetLegoEtaMin();
1488 Int_t ndiv = 100;
1489
1490 // jet energy and area arrays
1491 TH1F* hEtJet[30];
1492 TH1F* hAreaJet[30];
1493 for(Int_t mjet=0; mjet<nJ; mjet++){
1494 char hEtname[256]; char hAreaname[256];
1495 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1496 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax);
1497 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax);
ee7de0dd 1498 }
8838ab7a 1499 // background energy and area
1500 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax);
1501 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax);
1502
1503 //fill energies
1504 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1505 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1506 Float_t deta = etaT[jpart] - etaJet[ijet];
1507 Float_t dphi = phiT[jpart] - phiJet[ijet];
1508 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1509 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1510 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1511 if(dr <= rc){ // particles inside this cone
1512 injet[jpart] = ijet;
1513 multJet[ijet]++;
1514 if(cFlagT[jpart] == 1){// pt cut
1515 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone
1516 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1517 }
1518 break;
1519 }
1520 }// end jets loop
1521
1522 if(injet[jpart] == -1 && cFlagT[jpart] == 1)
1523 hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1524 } //end particle loop
1525
8838ab7a 1526 //calc areas
1527 Float_t eta0 = etamin;
1528 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1529 Float_t eta1 = eta0 + etaw;
1530 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1531 Float_t etac = eta0 + etaw/2.0;
1532 Float_t areabg = etaw*2.0*TMath::Pi();
1533 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1534 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1535 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1536 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1537 Float_t areaj = 0.0;
1538 if(deta0 > rc && deta1 < rc){
1539 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1540 areaj = acc1;
1541 }
1542 if(deta0 < rc && deta1 > rc){
1543 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1544 areaj = acc0;
1545 }
1546 if(deta0 < rc && deta1 < rc){
1547 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1548 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1549 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1550 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1551 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1552 }
1553 hAreaJet[ijet]->Fill(etac,areaj);
1554 areabg = areabg - areaj;
1555 } // end jets loop
1556 hAreaBackg->Fill(etac,areabg);
1557 eta0 = eta1;
1558 eta1 = eta1 + etaw;
1559 } // end loop for all eta bins
1560
1561 //subtract background
1562 for(Int_t kjet=0; kjet<nJ; kjet++){
1563 etJet[kjet] = 0.0; // first clear etJet for this jet
1564 for(Int_t bin = 0; bin< ndiv; bin++){
1565 if(hAreaJet[kjet]->GetBinContent(bin)){
1566 Float_t areab = hAreaBackg->GetBinContent(bin);
1567 Float_t etb = hEtBackg->GetBinContent(bin);
1568 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1569 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction
1570 }
1571 }
1572 }
ee7de0dd 1573
8838ab7a 1574 // calc background total
1575 Double_t etOut = hEtBackg->Integral();
1576 Double_t areaOut = hAreaBackg->Integral();
1577 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1578 etbgTotalN = etOut*areaT/areaOut;
1579
1580 //delete
1581 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1582 delete hEtJet[ljet];
1583 delete hAreaJet[ljet];
1584 }
ee7de0dd 1585
8838ab7a 1586 delete hEtBackg;
1587 delete hAreaBackg;
1588}
ee7de0dd 1589
8838ab7a 1590////////////////////////////////////////////////////////////////////////
be6e5811 1591void AliUA1JetFinderV2::SubtractBackgRatio(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1592 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT, const Float_t* sFlagT,
1593 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1594 Int_t* multJet, Int_t* injet)
ee7de0dd 1595{
8838ab7a 1596 // Ratio background subtraction method taking into acount dEt/deta distribution
1597 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1598 //factor F calc before
1599 Float_t bgRatioCut = header->GetBackgCutRatio();
1600
1601 //general
1602 Float_t rc= header->GetRadius();
1603 Float_t etamax = header->GetLegoEtaMax();
1604 Float_t etamin = header->GetLegoEtaMin();
1605 Int_t ndiv = 100;
1606
1607 // jet energy and area arrays
1608 TH1F* hEtJet[30];
1609 TH1F* hAreaJet[30];
1610 for(Int_t mjet=0; mjet<nJ; mjet++){
1611 char hEtname[256]; char hAreaname[256];
1612 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1613 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range
1614 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range
ee7de0dd 1615 }
8838ab7a 1616 // background energy and area
1617 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range
1618 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range
1619
1620 //fill energies
1621 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1622 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1623 Float_t deta = etaT[jpart] - etaJet[ijet];
1624 Float_t dphi = phiT[jpart] - phiJet[ijet];
1625 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1626 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1627 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1628 if(dr <= rc){ // particles inside this cone
1629 multJet[ijet]++;
1630 injet[jpart] = ijet;
1631 if(cFlagT[jpart] == 1){ //pt cut
1632 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut
1633 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1634 }
1635 break;
1636 }
1637 }// end jets loop
1638 if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1639 } //end particle loop
1640
8838ab7a 1641 //calc areas
1642 Float_t eta0 = etamin;
1643 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1644 Float_t eta1 = eta0 + etaw;
1645 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1646 Float_t etac = eta0 + etaw/2.0;
1647 Float_t areabg = etaw*2.0*TMath::Pi();
1648 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1649 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1650 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1651 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1652 Float_t areaj = 0.0;
1653 if(deta0 > rc && deta1 < rc){
1654 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1655 areaj = acc1;
1656 }
1657 if(deta0 < rc && deta1 > rc){
1658 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1659 areaj = acc0;
1660 }
1661 if(deta0 < rc && deta1 < rc){
1662 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1663 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1664 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1665 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1666 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1667 }
1668 hAreaJet[ijet]->Fill(etac,areaj);
1669 areabg = areabg - areaj;
1670 } // end jets loop
1671 hAreaBackg->Fill(etac,areabg);
1672 eta0 = eta1;
1673 eta1 = eta1 + etaw;
1674 } // end loop for all eta bins
1675
1676 //subtract background
1677 for(Int_t kjet=0; kjet<nJ; kjet++){
1678 etJet[kjet] = 0.0; // first clear etJet for this jet
1679 for(Int_t bin = 0; bin< ndiv; bin++){
1680 if(hAreaJet[kjet]->GetBinContent(bin)){
1681 Float_t areab = hAreaBackg->GetBinContent(bin);
1682 Float_t etb = hEtBackg->GetBinContent(bin);
1683 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1684 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction
1685 }
1686 }
1687 }
1688
1689 // calc background total
1690 Double_t etOut = hEtBackg->Integral();
1691 Double_t areaOut = hAreaBackg->Integral();
1692 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1693 etbgTotalN = etOut*areaT/areaOut;
1694
1695 //delete
1696 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1697 delete hEtJet[ljet];
1698 delete hAreaJet[ljet];
1699 }
1700
1701 delete hEtBackg;
1702 delete hAreaBackg;
ee7de0dd 1703}
1704
1705////////////////////////////////////////////////////////////////////////
ee7de0dd 1706void AliUA1JetFinderV2::Reset()
1707{
1708 fLego->Reset();
ee7de0dd 1709 AliJetFinder::Reset();
1710}
1711
1712////////////////////////////////////////////////////////////////////////
ee7de0dd 1713void AliUA1JetFinderV2::WriteJHeaderToFile()
1714{
1715 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1716 header->Write();
1717}
1718
1719////////////////////////////////////////////////////////////////////////
8838ab7a 1720void AliUA1JetFinderV2::InitTask(TChain* tree)
ee7de0dd 1721{
8838ab7a 1722
ee7de0dd 1723 // initializes some variables
1724 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 1725 // book lego
1726 fLego = new TH2F("legoH","eta-phi",
1727 header->GetLegoNbinEta(), header->GetLegoEtaMin(),
1728 header->GetLegoEtaMax(), header->GetLegoNbinPhi(),
1729 header->GetLegoPhiMin(), header->GetLegoPhiMax());
1730
ee7de0dd 1731 fDebug = fReader->GetReaderHeader()->GetDebug();
1732 fOpt = fReader->GetReaderHeader()->GetDetector();
8838ab7a 1733
1734 // Tasks initialization
ee7de0dd 1735 if(fOpt>0)
8838ab7a 1736 fReader->CreateTasks(tree);
ee7de0dd 1737
1738}