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Commit | Line | Data |
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f7d5860b | 1 | |
2 | //THIS Also includes summing ALL cells in the jetcone towards the jet energy NOT just those above threshold!!!!! | |
3 | ||
4 | ||
5 | /************************************************************************** | |
6 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
7 | * * | |
8 | * Author: The ALICE Off-line Project. * | |
9 | * Contributors are mentioned in the code where appropriate. * | |
10 | * * | |
11 | * Permission to use, copy, modify and distribute this software and its * | |
12 | * documentation strictly for non-commercial purposes is hereby granted * | |
13 | * without fee, provided that the above copyright notice appears in all * | |
14 | * copies and that both the copyright notice and this permission notice * | |
15 | * appear in the supporting documentation. The authors make no claims * | |
16 | * about the suitability of this software for any purpose. It is * | |
17 | * provided "as is" without express or implied warranty. * | |
18 | **************************************************************************/ | |
19 | ||
5933ca61 | 20 | /* |
21 | ||
22 | $Log$ | |
e5ba9847 | 23 | Revision 1.10 2004/03/06 01:56:09 mhorner |
24 | Pythai comp code | |
25 | ||
03149ca8 | 26 | Revision 1.9 2004/02/23 20:37:32 mhorner |
27 | changed geometry call | |
28 | ||
1c4c368e | 29 | Revision 1.8 2004/01/29 23:28:44 mhorner |
30 | Jet Finder - hard coded geom parameters removed | |
31 | ||
c21d4f1a | 32 | Revision 1.7 2004/01/21 22:27:47 mhorner |
33 | Cleaning up coding conventions | |
34 | ||
44f59d68 | 35 | Revision 1.6 2003/10/28 13:54:30 schutz |
36 | Compilation warnings fixed | |
37 | ||
9e5d2067 | 38 | Revision 1.5 2003/09/23 13:31:41 mhorner |
39 | Changed coordinate system | |
40 | ||
956a522c | 41 | Revision 1.4 2003/09/19 13:16:20 mhorner |
42 | Added additional jet energy info | |
43 | ||
5933ca61 | 44 | |
9e7e46ab | 45 | Revision 1.3 2003/09/04 12:49:56 mhorner |
46 | Changed hadron correction and added saving EMCAL and track contributions | |
5933ca61 | 47 | |
48 | */ | |
49 | ||
f7d5860b | 50 | |
51 | //*--Author: Sarah Blyth (LBL) | |
52 | //*--Based on UA1 jet algorithm from LUND JETSET called from EMC-erj | |
53 | ||
54 | #include "TTask.h" | |
55 | #include "AliEMCALJetFinderInput.h" | |
56 | #include "AliEMCALJetFinderOutput.h" | |
57 | #include "AliEMCALJetFinderAlgo.h" | |
58 | #include "AliEMCALJetFinderAlgoOmni.h" | |
59 | #include "AliEMCALJetFinderAlgoUA1Unit.h" | |
c21d4f1a | 60 | #include "AliEMCALGetter.h" |
f7d5860b | 61 | #include "AliEMCALGeometry.h" |
62 | #include "AliEMCAL.h" | |
f7d5860b | 63 | #include "AliEMCALDigit.h" |
64 | #include "TParticle.h" | |
65 | #include "AliRun.h" | |
66 | #include "AliEMCALJet.h" | |
67 | #include "TMath.h" | |
68 | ||
69 | ||
70 | ClassImp(AliEMCALJetFinderAlgoOmni) | |
71 | ||
72 | AliEMCALJetFinderAlgoOmni::AliEMCALJetFinderAlgoOmni() | |
73 | { | |
74 | //Default constructor | |
75 | if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Default Constructor"); | |
76 | ||
1c4c368e | 77 | // AliEMCALGetter * gime = AliEMCALGetter::Instance() ; |
78 | // AliEMCALGeometry * geom = gime->EMCALGeometry(); | |
79 | AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL"); | |
f7d5860b | 80 | fNumIter = 0; |
c21d4f1a | 81 | fNumUnits = geom->GetNTowers(); //Number of towers in EMCAL |
f7d5860b | 82 | fESeed = 5.0; //Default value |
83 | fConeRad = 0.3; //Default value | |
84 | fJetEMin = 10.0; //Default value | |
5933ca61 | 85 | fEtMin = 0.0; //Default value |
f7d5860b | 86 | fMinMove = 0.05; //From original UA1 JetFinder |
87 | fMaxMove = 0.15; //From original UA1 JetFinder | |
88 | fBGMaxMove = 0.035; //From original UA1 JetFinder | |
89 | fPtCut = 0; | |
90 | fHadCorr = 0; | |
91 | fEBGTotal = 1.0; //Set to 1 so that no div by zero in first FindJets() loop | |
92 | fEBGTotalOld = 0.0; | |
93 | fEBGAve = 0.0; | |
94 | fEnergy = 0.0; | |
95 | fJetEta = 0.0; | |
96 | fJetPhi = 0.0; | |
97 | fEtaInit = 0.0; | |
98 | fPhiInit = 0.0; | |
99 | fEtaB = 0.0; | |
100 | fPhiB = 0.0; | |
101 | fJetESum = 0.0; | |
102 | fJetEtaSum = 0.0; | |
103 | fJetPhiSum = 0.0; | |
104 | fDEta = 0.0; | |
105 | fDPhi = 0.0; | |
106 | fDistP = 0.0; | |
107 | fDistI = 0.0; | |
108 | fTempE = 0.0; | |
109 | fRad = 2.0; //Set to 2 to start | |
110 | fNumInCone = 0; | |
111 | fNumJets = 0; | |
112 | fArrayInitialised = 0; //Set to FALSE to start | |
113 | fBGType = kRatio; //Set Ratio method as default BG subtraction method | |
114 | fBGPar = -1.0; //Set to 1 to start | |
115 | } | |
116 | ||
117 | AliEMCALJetFinderAlgoOmni::~AliEMCALJetFinderAlgoOmni() | |
118 | { | |
119 | //Destructor | |
120 | if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Destructor"); | |
121 | delete[] fUnit; | |
122 | delete[] fUnitNoCuts; | |
123 | } | |
124 | ||
125 | void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters | |
126 | (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin, | |
127 | Float_t minMove, Float_t maxMove, Float_t bgMaxMove) | |
128 | { | |
129 | //Sets parameters for the JetFinding algorithm | |
130 | if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding"); | |
131 | ||
132 | SetNumUnits(numUnits); | |
133 | SetJetESeed(eSeed); | |
134 | SetConeRad(coneRad); | |
135 | SetJetEMin(jetEMin); | |
136 | SetEtMin(etMin); | |
137 | SetMinMove(minMove); | |
138 | SetMaxMove(maxMove); | |
139 | SetBGMaxMove(bgMaxMove); | |
140 | } | |
141 | ||
142 | void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters | |
143 | (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin) | |
144 | { | |
145 | //Sets fewer parameters for the JetFinding algorithm | |
146 | if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding"); | |
147 | ||
148 | SetNumUnits(numUnits); | |
149 | SetJetESeed(eSeed); | |
150 | SetConeRad(coneRad); | |
151 | SetJetEMin(jetEMin); | |
152 | SetEtMin(etMin); | |
153 | SetMinMove(fMinMove); | |
154 | SetMaxMove(fMaxMove); | |
155 | SetBGMaxMove(fBGMaxMove); | |
156 | } | |
157 | ||
158 | void AliEMCALJetFinderAlgoOmni::InitUnitArray() | |
159 | { | |
160 | //Initialises unit arrays | |
161 | if(fArrayInitialised) delete[] fUnit; | |
162 | fUnit = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits]; | |
163 | fUnitNoCuts = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits]; | |
164 | fArrayInitialised = 1; | |
165 | } | |
166 | ||
167 | void AliEMCALJetFinderAlgoOmni::FillUnitArray(AliEMCALJetFinderAlgoUA1FillUnitFlagType_t flag) | |
168 | { | |
44f59d68 | 169 | // Fill the unit array |
f7d5860b | 170 | if (fDebug>1) Info("FillUnitArray","Beginning FillUnitArray"); |
9e5d2067 | 171 | // AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL"); |
f7d5860b | 172 | // if (pEMCAL){ |
173 | // AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), ""); | |
174 | // }else | |
175 | // { | |
c21d4f1a | 176 | |
177 | AliEMCALGetter * gime = AliEMCALGetter::Instance() ; | |
178 | AliEMCALGeometry * geom = gime->EMCALGeometry(); | |
179 | ||
5933ca61 | 180 | // } |
f7d5860b | 181 | |
182 | AliEMCALJetFinderAlgoUA1FillUnitFlagType_t option = flag; | |
183 | Int_t numTracks, numDigits; | |
184 | ||
185 | //Loops over all elements in the AliEMCALJetFinderAlgoUA1Unit array and | |
186 | //fills the objects with relevant values from the Data Input object | |
187 | if (fDebug>10) Info("FillUnitArray","Filling array with Unit objects"); | |
188 | if (fDebug>15) Info("FillUnitArray","NTracks %i NDigits %i",fInputPointer->GetNTracks(),fInputPointer->GetNDigits()); | |
189 | numTracks = fInputPointer->GetNTracks(); | |
190 | numDigits = fInputPointer->GetNDigits(); | |
191 | TParticle *myPart; | |
192 | AliEMCALDigit *myDigit; | |
03149ca8 | 193 | if (!fPythiaComparison) |
194 | { | |
f7d5860b | 195 | //Fill units with Track info if appropriate |
196 | if(option==kFillTracksOnly || option ==kFillAll) | |
197 | { | |
198 | for(Int_t j=0; j<numTracks; j++) | |
199 | { | |
200 | myPart = fInputPointer->GetTrack(j); | |
201 | Float_t eta = myPart->Eta(); | |
202 | Float_t phi = myPart->Phi(); | |
203 | Int_t towerID = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi); | |
204 | Float_t pT = myPart->Pt(); | |
205 | Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy(); | |
206 | Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy(); | |
207 | ||
5933ca61 | 208 | |
209 | //OLD WAY: //Do Hadron Correction | |
f7d5860b | 210 | if(fHadCorr != 0) |
211 | { | |
212 | Double_t fullP = myPart->P(); | |
213 | Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta); | |
214 | unitEnergy -= hCEnergy*TMath::Sin(myPart->Theta()); | |
5933ca61 | 215 | unitEnergyNoCuts -= hCEnergy*TMath::Sin(myPart->Theta()); |
f7d5860b | 216 | fUnit[towerID-1].SetUnitEnergy(unitEnergy); |
5933ca61 | 217 | fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts); |
f7d5860b | 218 | } //end Hadron Correction loop |
5933ca61 | 219 | |
220 | ||
221 | /* | |
f7d5860b | 222 | //Do Hadron Correction with propagate phi for the track |
223 | if(fHadCorr != 0) | |
224 | { | |
225 | Bool_t curl = 1; | |
226 | Float_t deltaPhi; | |
227 | TParticlePDG *pdg = myPart->GetPDG(); | |
228 | if(pdg->Charge() < 0) | |
229 | { | |
230 | deltaPhi = PropagatePhi(myPart->Pt(), -1.0, curl); | |
231 | } | |
232 | else{ | |
233 | deltaPhi = PropagatePhi(myPart->Pt(), 1.0, curl); | |
234 | } | |
235 | phi += deltaPhi; | |
236 | //Get new tower id for cell that track would curve into | |
237 | Int_t towerID2; | |
956a522c | 238 | if(phi>(TMath::Pi()/180.0)*geom->GetArm1PhiMax() || phi<(TMath::Pi()/180.0)*geom->GetArm1PhiMin()) |
f7d5860b | 239 | { |
240 | towerID2 = -1; | |
241 | } | |
242 | else{ | |
243 | towerID2 = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi); | |
244 | } | |
245 | ||
246 | if(towerID2 != -1) | |
247 | { | |
248 | //Find unit energy of new tower | |
249 | Float_t unitEnergy2 = fUnit[towerID2-1].GetUnitEnergy(); | |
250 | Float_t unitEnergy2NoCuts = fUnitNoCuts[towerID2-1].GetUnitEnergy(); | |
251 | Double_t fullP = myPart->P(); | |
252 | Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta); | |
253 | unitEnergy2 -= hCEnergy*TMath::Sin(myPart->Theta()); | |
254 | unitEnergy2NoCuts -= hCEnergy*TMath::Sin(myPart->Theta()); | |
255 | fUnit[towerID2-1].SetUnitEnergy(unitEnergy2); | |
256 | fUnitNoCuts[towerID2-1].SetUnitEnergy(unitEnergy2NoCuts); | |
257 | }//end if for towerID2 | |
258 | }//end Hadron Correction loop | |
5933ca61 | 259 | */ |
f7d5860b | 260 | |
261 | fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts + pT); | |
262 | //Do Pt cut on tracks | |
263 | if(fPtCut != 0 && pT < fPtCut) continue; | |
264 | ||
265 | fUnit[towerID-1].SetUnitEnergy(unitEnergy+pT); | |
266 | ||
267 | }//end tracks loop | |
268 | }//end Tracks condition | |
269 | ||
270 | ||
271 | //Fill units with Digit info if appropriate | |
272 | if(option ==kFillDigitsOnly || option ==kFillAll) | |
273 | { | |
274 | for(Int_t k=0; k<numDigits; k++) | |
275 | { | |
276 | myDigit = fInputPointer->GetDigit(k); | |
277 | if (fDebug>10) Info("FillUnitArray","getting digits %i %i numdigits",k,numDigits ); | |
278 | Int_t towerID = myDigit->GetId(); | |
279 | Int_t amplitude = myDigit->GetAmp(); //Gets the integer valued amplitude of the digit | |
280 | Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion | |
281 | Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert! | |
282 | Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy() + digitEnergy; | |
283 | Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy() + digitEnergy; | |
284 | fUnit[towerID-1].SetUnitEnergy(unitEnergy); | |
285 | fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts); | |
286 | }//end digits loop | |
287 | }//end digits condition | |
288 | ||
289 | //Set all unit flags, Eta, Phi | |
290 | for(Int_t i=0; i<fNumUnits; i++) | |
291 | { | |
292 | if (fDebug>10) Info("FillUnitArray","Setting all units outside jets"); | |
9e7e46ab | 293 | //Set all units to be outside a jet initially |
294 | fUnit[i].SetUnitFlag(kOutJet); | |
f7d5860b | 295 | fUnit[i].SetUnitID(i+1); |
296 | Float_t eta; | |
297 | Float_t phi; | |
298 | geom->EtaPhiFromIndex(fUnit[i].GetUnitID(), eta, phi); | |
299 | fUnit[i].SetUnitEta(eta); | |
300 | fUnit[i].SetUnitPhi(phi*TMath::Pi()/180.0); | |
9e7e46ab | 301 | //Set all units to be outside a jet initially |
302 | fUnitNoCuts[i].SetUnitFlag(kOutJet); | |
f7d5860b | 303 | fUnitNoCuts[i].SetUnitID(i+1); |
304 | eta = 0.0; | |
305 | phi = 0.0; | |
306 | geom->EtaPhiFromIndex(fUnitNoCuts[i].GetUnitID(), eta, phi); | |
307 | fUnitNoCuts[i].SetUnitEta(eta); | |
308 | fUnitNoCuts[i].SetUnitPhi(phi*TMath::Pi()/180.0); | |
309 | // if(i>13000) cout<<"!!!!!!!!!!!!!!!!!For unit0, eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" and ID="<<fUnit[i].GetUnitID()<<endl; | |
310 | // if(fUnit[i].GetUnitEnergy()>0) cout<<"Unit ID "<<fUnit[i].GetUnitID() <<"with eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" has energy="<<fUnit[i].GetUnitEnergy()<<endl; | |
311 | }//end loop over all units in array (same as all towers in EMCAL) | |
03149ca8 | 312 | |
313 | } | |
314 | if (fPythiaComparison) | |
315 | { | |
316 | for(Int_t j=0; j<numTracks; j++) | |
317 | { | |
318 | myPart = fInputPointer->GetTrack(j); | |
319 | fUnit[j].SetUnitID(j); | |
320 | fUnit[j].SetUnitFlag(kOutJet); | |
321 | fUnit[j].SetUnitEta(myPart->Eta()); | |
322 | fUnit[j].SetUnitPhi(myPart->Phi()); | |
323 | fUnit[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta())); | |
324 | fUnitNoCuts[j].SetUnitID(j); | |
325 | fUnitNoCuts[j].SetUnitFlag(kOutJet); | |
326 | fUnitNoCuts[j].SetUnitEta(myPart->Eta()); | |
327 | fUnitNoCuts[j].SetUnitPhi(myPart->Phi()); | |
328 | fUnitNoCuts[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta())); | |
329 | } | |
330 | for(Int_t k=numTracks; k < fNumUnits; k++) | |
331 | { | |
332 | fUnit[k].SetUnitID(k); | |
e5ba9847 | 333 | fUnit[k].SetUnitFlag(kBelowMinEt); |
03149ca8 | 334 | fUnit[k].SetUnitEta(0.0); |
335 | fUnit[k].SetUnitPhi(0.0); | |
336 | fUnit[k].SetUnitEnergy(0.0); | |
337 | fUnitNoCuts[k].SetUnitID(k); | |
e5ba9847 | 338 | fUnitNoCuts[k].SetUnitFlag(kBelowMinEt); |
03149ca8 | 339 | fUnitNoCuts[k].SetUnitEta(0.0); |
340 | fUnitNoCuts[k].SetUnitPhi(0.0); | |
341 | fUnitNoCuts[k].SetUnitEnergy(0.0); | |
342 | } | |
343 | } | |
344 | ||
345 | ||
346 | ||
f7d5860b | 347 | } |
348 | ||
349 | ||
350 | void AliEMCALJetFinderAlgoOmni::Sort(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t length) | |
351 | { | |
352 | //Calls the recursive quicksort method to sort unit objects in decending order of Energy | |
353 | if (fDebug>1) Info("Sort","Sorting Unit objects"); | |
354 | QS(unit, 0, length-1); | |
355 | } | |
356 | ||
357 | ||
358 | void AliEMCALJetFinderAlgoOmni::QS(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t left, Int_t right) | |
359 | { | |
360 | //Sorts the AliEMCALJetFinderAlgoUA1Unit objects in decending order of Energy | |
361 | if (fDebug>111) Info("QS","QuickSorting Unit objects"); | |
362 | ||
363 | Int_t i; | |
364 | Int_t j; | |
365 | AliEMCALJetFinderAlgoUA1Unit unitFirst; | |
366 | AliEMCALJetFinderAlgoUA1Unit unitSecond; | |
367 | ||
368 | i = left; | |
369 | j = right; | |
370 | unitFirst = unit[(left+right)/2]; | |
371 | ||
372 | do | |
373 | { | |
374 | while( (unit[i].GetUnitEnergy() > unitFirst.GetUnitEnergy()) && (i < right)) i++; | |
375 | while( (unitFirst.GetUnitEnergy() > unit[j].GetUnitEnergy()) && (j > left)) j--; | |
376 | ||
377 | if(i <= j) | |
378 | { | |
379 | unitSecond = unit[i]; | |
380 | unit[i] = unit[j]; | |
381 | unit[j] = unitSecond; | |
382 | i++; | |
383 | j--; | |
384 | }//end if | |
385 | }while(i <= j); | |
386 | ||
387 | if(left < j) QS(unit, left, j); | |
388 | if(i < right) QS(unit, i, right); | |
389 | } | |
390 | ||
391 | ||
392 | void AliEMCALJetFinderAlgoOmni::FindBG() | |
393 | { | |
394 | if(fBGType == kRatio) RatioBG(); | |
395 | else if(fBGType == kCone) ConeBG(); | |
396 | else if(fBGType == kConstant) ConstantBG(); | |
397 | } | |
398 | ||
399 | void AliEMCALJetFinderAlgoOmni::RatioBG() | |
400 | { | |
401 | //Finds the background energy for the iteration | |
402 | //using the Ratio method | |
403 | if (fDebug>1) Info("FindBG","Finding Average Background"); | |
404 | //Store BGEperCell from previous iteration! | |
405 | fEBGTotalOld = fEBGTotal; | |
406 | fEBGTotal = 0.0; | |
407 | Int_t numCone = 0; | |
408 | ||
409 | //If user has not set fBGPar, set it to the default | |
410 | //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns | |
411 | if(fBGPar == -1) fBGPar = 0.4685; | |
412 | ||
413 | //Loop over all unit objects in the Unit array and link to same | |
414 | //unit ID in NoCuts Unit array | |
415 | for(Int_t i=0; i<fNumUnits; i++) | |
416 | { | |
417 | if(fUnit[i].GetUnitFlag() != kInJet) | |
418 | { | |
419 | Int_t id = fUnit[i].GetUnitID(); | |
420 | fEBGTotal += fUnitNoCuts[id-1].GetUnitEnergy(); | |
421 | } | |
422 | else numCone++; | |
423 | }//end for | |
424 | ||
425 | fEBGTotal *= fBGPar; | |
426 | fEBGAve = fEBGTotal / (fNumUnits - numCone); | |
427 | if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve); | |
428 | ||
429 | for(Int_t count=0; count<fNumUnits;count++) | |
430 | { | |
431 | fUnit[count].SetUnitFlag(kOutJet); | |
432 | }//end for | |
433 | } | |
434 | ||
435 | void AliEMCALJetFinderAlgoOmni::ConeBG() | |
436 | { | |
437 | //Finds the background energy for the iteration | |
438 | //using all energy not contained inside a jet | |
439 | if (fDebug>1) Info("FindBG","Finding Average Background"); | |
440 | //Store old value of BGEperCell! | |
441 | fEBGTotalOld = fEBGTotal; | |
442 | fEBGTotal = 0.0; | |
443 | Int_t numCone = 0; | |
444 | ||
445 | //Loop over all unit objects in the array and sum the energy of those not in a jet | |
446 | for(Int_t i=0; i<fNumUnits; i++) | |
447 | { | |
448 | if(fUnit[i].GetUnitFlag() != kInJet) | |
449 | fEBGTotal += fUnit[i].GetUnitEnergy(); | |
450 | else numCone++; | |
451 | }//end for | |
452 | ||
453 | fEBGAve = fEBGTotal / (fNumUnits - numCone); | |
454 | if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve); | |
455 | ||
456 | for(Int_t count=0; count<fNumUnits;count++) | |
457 | { | |
458 | fUnit[count].SetUnitFlag(kOutJet); | |
459 | }//end for | |
460 | } | |
461 | ||
462 | void AliEMCALJetFinderAlgoOmni::ConstantBG() | |
463 | { | |
464 | //Finds the background energy for the iteration | |
465 | //using all energy not contained inside a jet | |
466 | if (fDebug>1) Info("FindBG","Finding Average Background"); | |
467 | ||
468 | //If user has not set fBGPar, set it to the default | |
469 | //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns | |
470 | if(fBGPar == -1) fBGPar = 0.03378; | |
471 | ||
472 | fEBGAve = fBGPar; | |
473 | if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve); | |
474 | ||
475 | fEBGTotal = 0.0; | |
476 | Int_t numCone = 0; | |
477 | for(Int_t count=0; count<fNumUnits;count++) | |
478 | { | |
479 | if(fUnit[count].GetUnitFlag() == kInJet) | |
480 | { | |
481 | numCone++; | |
482 | } | |
483 | fUnit[count].SetUnitFlag(kOutJet); | |
484 | }//end for | |
485 | fEBGTotal = fEBGAve * (fNumUnits-numCone); | |
486 | fEBGTotalOld = fEBGTotal; | |
487 | } | |
488 | ||
489 | void AliEMCALJetFinderAlgoOmni::FindJetEtaPhi(Int_t counter) | |
490 | { | |
491 | //Finds the eta and phi of the jet axis | |
492 | if (fDebug>10) Info("FindJetEtaPhi","Finding Jet Eta and Phi"); | |
493 | ||
494 | fDEta = fUnit[counter].GetUnitEta() - fEtaInit; | |
495 | fDPhi = fUnit[counter].GetUnitPhi() - fPhiInit; | |
496 | ||
497 | fEnergy = fUnit[counter].GetUnitEnergy() - fEBGAve; | |
498 | fJetEtaSum += fEnergy * fDEta; | |
499 | fJetPhiSum += fEnergy * fDPhi; | |
500 | fJetESum += fEnergy; | |
e5ba9847 | 501 | if (fJetESum >1.0e-7) |
502 | { | |
503 | fJetEta = fEtaInit + (fJetEtaSum / fJetESum); | |
504 | fJetPhi = fPhiInit + (fJetPhiSum / fJetESum); | |
505 | } | |
f7d5860b | 506 | } |
507 | ||
508 | ||
509 | void AliEMCALJetFinderAlgoOmni::FindJetEnergy() | |
510 | { | |
511 | //Finds the energy of the jet after the final axis has been found | |
512 | if (fDebug>1) Info("FindJetEnergy","Finding Jet Energy"); | |
513 | ||
514 | for(Int_t i=0; i<fNumUnits; i++) | |
515 | { | |
516 | //Loop over all unit objects in the array and find if within cone radius | |
517 | Float_t dEta = fUnit[i].GetUnitEta() - fJetEta; | |
518 | Float_t dPhi = fUnit[i].GetUnitPhi() - fJetPhi; | |
03149ca8 | 519 | Float_t rad; |
520 | if ((dEta*dEta) + (dPhi*dPhi)>1.e-7) | |
521 | { | |
522 | rad = TMath::Sqrt( (dEta*dEta) + (dPhi*dPhi) ); | |
523 | }else | |
524 | { | |
525 | rad=0.0; | |
526 | } | |
f7d5860b | 527 | |
528 | if(fUnit[i].GetUnitFlag()==kOutJet && rad<= fConeRad) | |
529 | { | |
530 | fUnit[i].SetUnitFlag(kInCurrentJet); | |
531 | Float_t energy = fUnit[i].GetUnitEnergy() - fEBGAve; | |
532 | fJetESum += energy; | |
533 | fJetEtaSum += energy * dEta; | |
534 | fJetPhiSum += energy * dPhi; | |
535 | fNumInCone++; //Increment the number of cells in the jet cone | |
536 | }//end if | |
537 | }//end for | |
538 | } | |
539 | ||
540 | ||
541 | void AliEMCALJetFinderAlgoOmni::StoreJetInfo() | |
542 | { | |
543 | //Stores the resulting jet information in appropriate storage structure (TO BE DECIDED!!!!) | |
544 | if (fDebug>1) Info("StoreJetInfo","Storing Jet Information"); | |
c21d4f1a | 545 | AliEMCALGetter * gime = AliEMCALGetter::Instance() ; |
546 | AliEMCALGeometry * geom = gime->EMCALGeometry(); | |
f7d5860b | 547 | //Store: |
548 | //fJetESum is the final jet energy (background has been subtracted) | |
549 | //fJetEta is the final jet Eta | |
550 | //fJetPhi is the final jet Phi | |
551 | //fNumInCone is the final number of cells included in the jet cone | |
552 | //fEtaInit is the eta of the initiator cell | |
553 | //fPhiInit is the phi of the initiator cell | |
554 | fJet.SetEnergy(fJetESum); | |
555 | fJet.SetEta(fJetEta); | |
556 | fJet.SetPhi(fJetPhi); | |
557 | ||
558 | cout<<"For iteration "<<fNumIter <<" and Jet number " <<fNumJets <<endl; | |
559 | cout<<"The jet energy is: " <<fJetESum <<endl; | |
560 | cout<<"The jet eta is ---->" <<fJetEta <<endl; | |
561 | cout<<"The jet phi is ---->" <<fJetPhi <<endl; | |
562 | ||
563 | Int_t numberTracks = fInputPointer->GetNTracks(); | |
5933ca61 | 564 | Int_t numberDigits = fInputPointer->GetNDigits(); |
565 | AliEMCALDigit *myD; | |
f7d5860b | 566 | TParticle *myP; |
567 | Int_t numTracksInCone = 0; | |
5933ca61 | 568 | Float_t trackEnergy = 0.0; |
9e7e46ab | 569 | Float_t trackEnergyPtCut =0.0; |
5933ca61 | 570 | Float_t emcalEnergy = 0.0; |
9e7e46ab | 571 | Float_t emcalEnergyBGSub = 0.0; |
f7d5860b | 572 | |
573 | for(Int_t counter=0; counter<numberTracks; counter++) | |
574 | { | |
575 | myP = fInputPointer->GetTrack(counter); | |
576 | Float_t eta = myP->Eta(); | |
577 | Float_t phi = myP->Phi(); | |
578 | Float_t deta = fJetEta-eta; | |
579 | Float_t dphi = fJetPhi -phi; | |
580 | Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi)); | |
581 | if(rad<=fConeRad) numTracksInCone++; | |
582 | }//end for | |
583 | ||
584 | Float_t *pTArray = new Float_t[numTracksInCone]; | |
585 | Float_t *etaArray = new Float_t[numTracksInCone]; | |
586 | Float_t *phiArray = new Float_t[numTracksInCone]; | |
587 | Int_t *pdgArray = new Int_t[numTracksInCone]; | |
588 | Int_t index = 0; | |
589 | ||
590 | for(Int_t counter2=0; counter2<numberTracks; counter2++) | |
591 | { | |
592 | myP = fInputPointer->GetTrack(counter2); | |
593 | Float_t eta = myP->Eta(); | |
594 | Float_t phi = myP->Phi(); | |
595 | Float_t deta = fJetEta-eta; | |
596 | Float_t dphi = fJetPhi -phi; | |
03149ca8 | 597 | Float_t rad ; |
598 | if ((deta*deta) + (dphi*dphi)>1.e-7) | |
599 | { | |
600 | rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) ); | |
601 | }else | |
602 | { | |
603 | rad=0.0; | |
604 | } | |
605 | ||
f7d5860b | 606 | if(rad<=fConeRad) |
607 | { | |
608 | pTArray[index] = myP->Pt(); | |
5933ca61 | 609 | //Calculate track contribution within jetcone |
9e7e46ab | 610 | trackEnergy += myP->Pt(); |
611 | if(myP->Pt() >= fPtCut) trackEnergyPtCut += myP->Pt(); | |
f7d5860b | 612 | etaArray[index] = eta; |
613 | phiArray[index] = phi; | |
614 | pdgArray[index] = myP->GetPdgCode(); | |
615 | index++; | |
9e7e46ab | 616 | if(fHadCorr != 0) |
617 | { | |
618 | Double_t fullP = myP->P(); | |
619 | Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta); | |
620 | emcalEnergy -= hCEnergy*TMath::Sin(myP->Theta()); | |
621 | emcalEnergyBGSub -= hCEnergy*TMath::Sin(myP->Theta()); | |
622 | } //end Hadron Correction loop | |
623 | ||
f7d5860b | 624 | }//end if |
625 | }//end for | |
626 | ||
5933ca61 | 627 | //Loop over digits to find EMCal contribution within jetcone |
628 | for(Int_t counter3=0; counter3<numberDigits; counter3++) | |
629 | { | |
630 | myD = fInputPointer->GetDigit(counter3); | |
631 | //GET DIGIT ETA, PHI so that can check if inside R! | |
632 | Float_t eta = 0.0; | |
633 | Float_t phi = 0.0; | |
44f59d68 | 634 | Int_t iID = myD->GetId(); |
635 | geom->EtaPhiFromIndex(iID, eta, phi); | |
5933ca61 | 636 | Float_t deta = fJetEta-eta; |
9e7e46ab | 637 | Float_t dphi = fJetPhi -(TMath::Pi()/180.0)*phi; |
03149ca8 | 638 | //Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi)); |
639 | Float_t rad ; | |
640 | if ((deta*deta) + (dphi*dphi)>1.e-7) | |
641 | { | |
642 | rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) ); | |
643 | }else | |
644 | { | |
645 | rad=0.0; | |
646 | } | |
647 | ||
5933ca61 | 648 | if(rad<=fConeRad) |
649 | { | |
650 | Int_t amplitude = myD->GetAmp(); //Gets the integer valued amplitude of the digit | |
651 | Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion | |
652 | Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert! | |
653 | emcalEnergy += digitEnergy; | |
9e7e46ab | 654 | emcalEnergyBGSub += (digitEnergy - fEBGAve); |
5933ca61 | 655 | }//end if |
656 | }//end count3 for | |
657 | ||
9e7e46ab | 658 | //Save in JET object |
f7d5860b | 659 | fJet.SetTrackList(numTracksInCone,pTArray, etaArray, phiArray, pdgArray); |
5933ca61 | 660 | fJet.SetEMCALEnergy(emcalEnergy); |
9e7e46ab | 661 | fJet.SetEMCALEnergyBGSub(emcalEnergyBGSub); |
5933ca61 | 662 | fJet.SetTrackEnergy(trackEnergy); |
9e7e46ab | 663 | fJet.SetTrackEnergyPtCut(trackEnergyPtCut); |
f7d5860b | 664 | fOutputObject.AddJet(&fJet); |
665 | delete[] pTArray; | |
666 | delete[] etaArray; | |
667 | delete[] phiArray; | |
668 | delete[] pdgArray; | |
669 | } | |
670 | ||
671 | ||
672 | void AliEMCALJetFinderAlgoOmni::FindJets() | |
673 | { | |
674 | //Runs the complete UA1 JetFinding algorithm to find jets! | |
675 | if (fDebug>1) Info("FindJets","Starting Jet Finding!!!"); | |
676 | ||
677 | //If the array of JetFinderUnit objects has not been initialised then initialise with default settings | |
678 | if(!fArrayInitialised) | |
679 | { | |
680 | InitUnitArray(); | |
681 | FillUnitArray(kFillAll); | |
682 | }//end if | |
683 | if (fDebug>1) Info("FindJets","Unit array filled"); | |
684 | ||
685 | //Step 1. Sort the array in descending order of Energy | |
686 | Sort(fUnit,fNumUnits); | |
687 | ||
688 | //Step 2. Set the number of iterations and Number of jets found to zero to start | |
689 | fNumIter = 0; | |
690 | fNumJets = 0; | |
691 | ||
692 | //Step 3. Begin the iteration loop to find jets | |
693 | //Need to iterate the algorithm while number of iterations<2 OR number of iterations<10 AND | |
694 | //the value of the average background has changed more than specified amount | |
695 | //Min iterations = 2, Max iterations = 10 | |
696 | //while(fNumIter<2 || (fNumIter <10 && ( (fEBGTotal-fEBGTotalOld)/fEBGTotal) > fBGMaxMove) ) | |
697 | ||
698 | while(fNumIter<2 || (fNumIter <10 && ( fEBGTotal-fEBGTotalOld) > fEBGTotal*fBGMaxMove) ) | |
699 | { | |
700 | if (fDebug>1) Info("FindJets","Starting BIG iteration ---> %i",fNumIter); | |
701 | ||
702 | //Step 4. Find the value of the average background energy | |
703 | FindBG(); | |
704 | fOutputObject.Reset(kResetJets); //Reset output object to store info for new iteration | |
705 | fNumJets=0; | |
706 | ||
707 | //Loop over the array of unit objects and flag those with energy below MinCellEt | |
708 | Int_t numbelow = 0; | |
709 | for(Int_t j=0; j<fNumUnits; j++) | |
710 | { | |
711 | if( (fUnit[j].GetUnitEnergy()-fEBGAve) < fEtMin) | |
712 | { | |
713 | // fUnit[j].SetUnitFlag(kBelowMinEt); TAKING OUT kBelow flag | |
714 | numbelow++; | |
715 | }//end if | |
716 | }//end for | |
717 | //cout<<"THERE WERE "<<numbelow<<" units with E <EtMin!!!!!!!!!!!!!!!"<<endl; | |
718 | ||
719 | //Do quick check if there are no jets upfront | |
720 | // if(fUnit[0].GetUnitFlag() == kBelowMinEt) | |
721 | if( (fUnit[0].GetUnitEnergy()-fEBGAve) < fEtMin) | |
722 | { | |
723 | cout <<"There are no jets for this event!" <<endl; | |
724 | break; | |
725 | }//end if | |
726 | ||
727 | //Step 5. Begin with the first jet candidate cell (JET SEED LOOP) | |
728 | if (fDebug>5) Info("FindJets","Beginning JET SEED LOOP"); | |
729 | for(Int_t count=0; count<fNumUnits; count++) | |
730 | { | |
731 | ||
732 | //CHECK CONDITION HERE _ NOT SURE IF SHOULD MAYBE BE: GetUnitEnergy()-fEBGAve >fESeed????????????????????????????? | |
733 | if(fUnit[count].GetUnitEnergy()>=fESeed && fUnit[count].GetUnitFlag()==kOutJet) | |
734 | { | |
735 | fEnergy = fUnit[count].GetUnitEnergy() - fEBGAve; | |
736 | fJetEta = fUnit[count].GetUnitEta(); | |
737 | fJetPhi = fUnit[count].GetUnitPhi(); | |
738 | Int_t seedID = fUnit[count].GetUnitID(); | |
739 | if (fDebug>5) Info("FindJets","Inside first candidate jet seed loop for time : %i", count); | |
740 | if (fDebug>5) Info("FindJets","Found candidate energy %f ",fEnergy); | |
741 | if (fDebug>5) Info("FindJets","Found candidate eta %f ", fJetEta); | |
742 | if (fDebug>5) Info("FindJets","Found candidate phi %f ", fJetPhi); | |
743 | if (fDebug>5) Info("FindJets","Found candidate ID %i", seedID); | |
744 | ||
745 | fEtaInit = fJetEta; | |
746 | fPhiInit = fJetPhi; | |
747 | fEtaB = fJetEta; | |
748 | fPhiB = fJetPhi; | |
749 | fJetESum = 0.0; | |
750 | fJetEtaSum = 0.0; | |
751 | fJetPhiSum = 0.0; | |
752 | ||
753 | //Step 6. Find Jet Eta and Phi | |
754 | //Loop over all units in the array to find the ones in the jet cone and determine contrib to Jet eta, phi | |
755 | do | |
756 | { | |
757 | for(Int_t count1=0; count1<fNumUnits; count1++) | |
758 | { | |
759 | if(fUnit[count1].GetUnitID() == seedID) continue; //skip unit if the jetseed to avoid doublecounting | |
760 | if(fUnit[count1].GetUnitFlag() == kOutJet) | |
761 | { | |
762 | fDEta = fUnit[count1].GetUnitEta() - fJetEta; | |
763 | fDPhi = fUnit[count1].GetUnitPhi() - fJetPhi; | |
03149ca8 | 764 | if ( (fDEta*fDEta) + (fDPhi*fDPhi) >1.e-7) |
765 | { | |
766 | fRad = TMath::Sqrt( (fDEta*fDEta) + (fDPhi*fDPhi) ); | |
767 | }else | |
768 | { | |
769 | fRad=0.000; | |
770 | } | |
f7d5860b | 771 | if(fRad <= fConeRad) |
772 | { | |
773 | FindJetEtaPhi(count1); | |
774 | }//end if | |
775 | }//end if | |
776 | }//end for (Jet Eta, Phi LOOP) | |
777 | ||
778 | //Find the distance cone centre moved from previous cone centre | |
779 | if (fDebug>10) Info("FindJets","Checking if cone move small enough"); | |
03149ca8 | 780 | if (((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) >1.e-7) |
781 | { | |
782 | fDistP = TMath::Sqrt( ((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) ); | |
783 | }else | |
784 | { | |
785 | fDistP = 0.00; | |
786 | } | |
f7d5860b | 787 | // if(fDistP <= fMinMove) break; |
788 | ||
789 | ||
790 | //Find the distance cone centre is from initiator cell | |
791 | if (fDebug>10) Info("FindJets","Checking if cone move too large"); | |
e5ba9847 | 792 | if ( ((fJetEtaSum)*(fJetEtaSum))+((fJetPhiSum)*(fJetPhiSum)) >1.e-7) |
03149ca8 | 793 | { |
794 | fDistI = TMath::Sqrt( ((fJetEtaSum/fJetESum)*(fJetEtaSum/fJetESum)) + ((fJetPhiSum/fJetESum)* | |
f7d5860b | 795 | (fJetPhiSum/fJetESum))); |
03149ca8 | 796 | }else |
797 | { | |
798 | fDistI = 0.00; | |
799 | } | |
f7d5860b | 800 | |
801 | if(fDistP>fMinMove && fDistI<fMaxMove) | |
802 | { | |
803 | fEtaB = fJetEta; | |
804 | fPhiB = fJetPhi; | |
805 | }//end if | |
806 | ||
807 | }while(fDistP>fMinMove && fDistI<fMaxMove); | |
808 | ||
809 | fJetEta = fEtaB; | |
810 | fJetPhi = fPhiB; | |
811 | ||
812 | ||
813 | //Step 7. Find the Jet Energy | |
814 | if (fDebug>1) Info("FindJets","Looking for Jet energy"); | |
815 | fJetESum = 0.0; | |
816 | fJetEtaSum = 0.0; | |
817 | fJetPhiSum = 0.0; | |
818 | fNumInCone = 0; | |
819 | FindJetEnergy(); | |
820 | ||
821 | //cout<<"Number of cells in jet cone is: "<<fNumInCone<<endl; | |
822 | ||
823 | //Step 8. Check if the jet is a valid jet | |
824 | //Check if cluster energy is above Min allowed to be a jet | |
825 | //DID NOT DO THE COSH COMPARISON HERE -> NEED TO CHECK WHICH COMPARISON IS BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | |
826 | if (fDebug>5) Info("FindJets","Checking cluster is valid jet"); | |
827 | if(fJetESum < fJetEMin) | |
828 | { | |
829 | for(Int_t count2=0; count2<fNumUnits; count2++) | |
830 | { | |
831 | if(fUnit[count2].GetUnitFlag()==kInCurrentJet || fUnit[count2].GetUnitFlag()==kOutJet) | |
832 | fUnit[count2].SetUnitFlag(kOutJet); | |
833 | }//end for | |
834 | if (fDebug>10) Info("FindJets","NOT a valid jet cell"); | |
835 | }else | |
836 | { | |
837 | for(Int_t count2=0; count2<fNumUnits; count2++) | |
838 | { | |
839 | if(fUnit[count2].GetUnitFlag()==kInCurrentJet) | |
840 | { | |
841 | // cout<<"Setting unit #"<<count2 <<" to be officially in a jet!"<<endl; | |
842 | fUnit[count2].SetUnitFlag(kInJet); | |
843 | } | |
844 | }//end for | |
845 | ||
846 | //NEED TO CHECK FINAL WEIRD ITERATION OF ETA AND PHI CHANGES!!!!!!!!! | |
847 | // fJetPhi += fJetPhiSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | |
848 | // fJetEta += fJetEtaSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | |
849 | ||
850 | fNumJets++; //Incrementing number of jets found | |
851 | StoreJetInfo(); //Storing jet info | |
852 | ||
853 | }//end if (check cluster above Min Jet Energy) | |
854 | }//end if (Jet Seed condition) | |
855 | }//end (JET SEED LOOP) | |
856 | ||
857 | if (fDebug>5) Info("FindJets","End of BIG iteration number %i",fNumIter); | |
858 | // this->Dump(); | |
859 | fNumIter++; | |
860 | }//end 10 iteration WHILE LOOP | |
861 | } | |
862 | ||
863 | ||
864 | ||
865 | ||
866 | ||
867 | ||
868 | ||
869 | ||
870 | ||
871 | ||
872 |