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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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14 **************************************************************************/
18 //-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (SUBATECH & Kurchatov Institute)
19 // August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
20 // of new IO (à la PHOS)
21 // Mar 2007, Aleksei Pavlinov - new algoritmh of pseudo clusters
22 //////////////////////////////////////////////////////////////////////////////
23 // Clusterization class. Performs clusterization (collects neighbouring active cells) and
24 // unfolds the clusters having several local maxima.
25 // Results are stored in TreeR#, branches EMCALTowerRP (EMC recPoints),
26 // EMCALPreShoRP (CPV RecPoints) and AliEMCALClusterizer (Clusterizer with all
27 // parameters including input digits branch title, thresholds etc.)
28 // This TTask is normally called from Reconstructioner, but can as well be used in
31 // root [0] AliEMCALClusterizerv1 * cl = new AliEMCALClusterizerv1("galice.root")
32 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
33 // //reads gAlice from header file "..."
34 // root [1] cl->ExecuteTask()
35 // //finds RecPoints in all events stored in galice.root
36 // root [2] cl->SetDigitsBranch("digits2")
37 // //sets another title for Digitis (input) branch
38 // root [3] cl->SetRecPointsBranch("recp2")
39 // //sets another title four output branches
40 // root [4] cl->SetTowerLocalMaxCut(0.03)
41 // //set clusterization parameters
42 // root [5] cl->ExecuteTask("deb all time")
43 // //once more finds RecPoints options are
44 // // deb - print number of found rec points
45 // // deb all - print number of found RecPoints and some their characteristics
46 // // time - print benchmarking results
48 // --- ROOT system ---
59 #include <TBenchmark.h>
63 // --- Standard library ---
66 // --- AliRoot header files ---
67 #include "AliRunLoader.h"
70 #include "AliEMCALClusterizerv1.h"
71 #include "AliEMCALRecPoint.h"
72 #include "AliEMCALDigit.h"
73 #include "AliEMCALDigitizer.h"
75 #include "AliEMCALGeometry.h"
76 #include "AliEMCALRecParam.h"
77 #include "AliEMCALReconstructor.h"
78 #include "AliCDBManager.h"
79 #include "AliCaloCalibPedestal.h"
80 #include "AliEMCALCalibData.h"
82 #include "AliCDBEntry.h"
84 ClassImp(AliEMCALClusterizerv1)
86 //____________________________________________________________________________
87 AliEMCALClusterizerv1::AliEMCALClusterizerv1()
88 : AliEMCALClusterizer(),
92 fNumberOfECAClusters(0),fCalibData(0),fCaloPed(0),
93 fADCchannelECA(0.),fADCpedestalECA(0.),fECAClusteringThreshold(0.),fECALocMaxCut(0.),
94 fECAW0(0.),fTimeCut(1.),fTimeMin(-1.),fTimeMax(1.),fMinECut(0.)
96 // ctor with the indication of the file where header Tree and digits Tree are stored
101 //____________________________________________________________________________
102 AliEMCALClusterizerv1::AliEMCALClusterizerv1(AliEMCALGeometry* geometry)
103 : AliEMCALClusterizer(),
105 fDefaultInit(kFALSE),
107 fNumberOfECAClusters(0),fCalibData(0), fCaloPed(0),
108 fADCchannelECA(0.),fADCpedestalECA(0.),fECAClusteringThreshold(0.),fECALocMaxCut(0.),
109 fECAW0(0.),fTimeCut(1.),fTimeMin(-1.),fTimeMax(1.),fMinECut(0.)
111 // ctor with the indication of the file where header Tree and digits Tree are stored
112 // use this contructor to avoid usage of Init() which uses runloader
113 // change needed by HLT - MP
115 // Note for the future: the use on runloader should be avoided or optional at least
116 // another way is to make Init virtual and protected at least such that the deriving classes can overload
122 AliFatal("Geometry not initialized.");
126 gMinuit = new TMinuit(100) ;
130 //____________________________________________________________________________
131 AliEMCALClusterizerv1::AliEMCALClusterizerv1(AliEMCALGeometry* geometry, AliEMCALCalibData * calib, AliCaloCalibPedestal * caloped)
132 : AliEMCALClusterizer(),
134 fDefaultInit(kFALSE),
136 fNumberOfECAClusters(0),fCalibData(calib), fCaloPed(caloped),
137 fADCchannelECA(0.),fADCpedestalECA(0.),fECAClusteringThreshold(0.),fECALocMaxCut(0.),
138 fECAW0(0.),fTimeCut(1.),fTimeMin(-1.),fTimeMax(1.),fMinECut(0.)
140 // ctor, geometry and calibration are initialized elsewhere.
143 AliFatal("Geometry not initialized.");
146 gMinuit = new TMinuit(100) ;
151 //____________________________________________________________________________
152 AliEMCALClusterizerv1::~AliEMCALClusterizerv1()
157 //____________________________________________________________________________
158 Float_t AliEMCALClusterizerv1::Calibrate(const Float_t amp, const Float_t time, const Int_t absId)
161 // Convert digitized amplitude into energy.
162 // Calibration parameters are taken from calibration data base for raw data,
163 // or from digitizer parameters for simulated data.
168 AliFatal("Did not get geometry from EMCALLoader") ;
177 Bool_t bCell = fGeom->GetCellIndex(absId, iSupMod, nModule, nIphi, nIeta) ;
179 fGeom->PrintGeometry();
180 Error("Calibrate()"," Wrong cell id number : %i", absId);
184 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,nModule,nIphi, nIeta,iphi,ieta);
186 // Check if channel is bad (dead or hot), in this case return 0.
187 // Gustavo: 15-12-09 In case of RAW data this selection is already done, but not in simulation.
188 // for the moment keep it here but remember to do the selection at the sdigitizer level
189 // and remove it from here
190 Int_t channelStatus = (Int_t)(fCaloPed->GetDeadMap(iSupMod))->GetBinContent(ieta,iphi);
191 if(channelStatus == AliCaloCalibPedestal::kHot || channelStatus == AliCaloCalibPedestal::kDead) {
192 AliDebug(2,Form("Tower from SM %d, ieta %d, iphi %d is BAD : status %d !!!",iSupMod,ieta,iphi, channelStatus));
195 //Check if time is too large or too small, indication of a noisy channel, remove in this case
196 if(time > fTimeMax || time < fTimeMin) return 0;
198 fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi);
199 fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
201 return -fADCpedestalECA + amp * fADCchannelECA ;
204 else //Return energy with default parameters if calibration is not available
205 return -fADCpedestalECA + amp * fADCchannelECA ;
209 //____________________________________________________________________________
210 void AliEMCALClusterizerv1::Digits2Clusters(Option_t * option)
212 // Steering method to perform clusterization for the current event
215 if(strstr(option,"tim"))
216 gBenchmark->Start("EMCALClusterizer");
218 if(strstr(option,"print"))
221 //Get calibration parameters from file or digitizer default values.
222 GetCalibrationParameters() ;
224 //Get dead channel map from file or digitizer default values.
225 GetCaloCalibPedestal() ;
227 fNumberOfECAClusters = 0;
229 MakeClusters() ; //only the real clusters
236 //Evaluate position, dispersion and other RecPoint properties for EC section
237 for(index = 0; index < fRecPoints->GetEntries(); index++) {
238 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalAll(fECAW0,fDigitsArr) ;
239 //For each rec.point set the distance to the nearest bad crystal
240 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalDistanceToBadChannels(fCaloPed);
245 for(index = 0; index < fRecPoints->GetEntries(); index++) {
246 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->SetIndexInList(index) ;
247 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->Print();
252 if(strstr(option,"deb") || strstr(option,"all"))
253 PrintRecPoints(option) ;
255 AliDebug(1,Form("EMCAL Clusterizer found %d Rec Points",fRecPoints->GetEntriesFast()));
257 fRecPoints->Delete();
259 if(strstr(option,"tim")){
260 gBenchmark->Stop("EMCALClusterizer");
261 printf("Exec took %f seconds for Clusterizing",
262 gBenchmark->GetCpuTime("EMCALClusterizer"));
266 //____________________________________________________________________________
267 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * recPoint, AliEMCALDigit ** maxAt,
268 const Float_t* maxAtEnergy,
269 Int_t nPar, Float_t * fitparameters) const
271 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
272 // The initial values for fitting procedure are set equal to the
273 // positions of local maxima.
274 // Cluster will be fitted as a superposition of nPar/3
275 // electromagnetic showers
277 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
279 gMinuit->mncler(); // Reset Minuit's list of paramters
280 gMinuit->SetPrintLevel(-1) ; // No Printout
281 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
282 // To set the address of the minimization function
283 TList * toMinuit = new TList();
284 toMinuit->AddAt(recPoint,0) ;
285 toMinuit->AddAt(fDigitsArr,1) ;
286 toMinuit->AddAt(fGeom,2) ;
288 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
290 // filling initial values for fit parameters
291 AliEMCALDigit * digit ;
295 Int_t nDigits = (Int_t) nPar / 3 ;
299 for(iDigit = 0; iDigit < nDigits; iDigit++){
300 digit = maxAt[iDigit];
305 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
307 Float_t energy = maxAtEnergy[iDigit] ;
309 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
312 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
315 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
318 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
321 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
324 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
329 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
330 // The number of function call slightly depends on it.
331 //Double_t p1 = 1.0 ;
334 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
335 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
336 gMinuit->SetMaxIterations(5);
337 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
338 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
340 if(ierflg == 4){ // Minimum not found
341 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
344 for(index = 0; index < nPar; index++){
347 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
348 fitparameters[index] = val ;
356 //____________________________________________________________________________
357 void AliEMCALClusterizerv1::GetCalibrationParameters()
359 // Set calibration parameters:
360 // if calibration database exists, they are read from database,
361 // otherwise, they are taken from digitizer.
363 // It is a user responsilibity to open CDB before reconstruction,
365 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
367 //Check if calibration is stored in data base
371 AliCDBEntry *entry = (AliCDBEntry*)
372 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
373 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
377 AliFatal("Calibration parameters not found in CDB!");
381 //____________________________________________________________________________
382 void AliEMCALClusterizerv1::GetCaloCalibPedestal()
384 // Set calibration parameters:
385 // if calibration database exists, they are read from database,
386 // otherwise, they are taken from digitizer.
388 // It is a user responsilibity to open CDB before reconstruction,
390 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
392 //Check if calibration is stored in data base
396 AliCDBEntry *entry = (AliCDBEntry*)
397 AliCDBManager::Instance()->Get("EMCAL/Calib/Pedestals");
398 if (entry) fCaloPed = (AliCaloCalibPedestal*) entry->GetObject();
402 AliFatal("Pedestal info not found in CDB!");
407 //____________________________________________________________________________
408 void AliEMCALClusterizerv1::Init()
410 // Make all memory allocations which can not be done in default constructor.
411 // Attach the Clusterizer task to the list of EMCAL tasks
413 AliRunLoader *rl = AliRunLoader::Instance();
414 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
415 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
417 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
419 AliDebug(1,Form("geom 0x%x",fGeom));
422 gMinuit = new TMinuit(100) ;
426 //____________________________________________________________________________
427 void AliEMCALClusterizerv1::InitParameters()
429 // Initializes the parameters for the Clusterizer
430 fNumberOfECAClusters = 0;
435 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
437 AliFatal("Reconstruction parameters for EMCAL not set!");
439 fECAClusteringThreshold = recParam->GetClusteringThreshold();
440 fECAW0 = recParam->GetW0();
441 fMinECut = recParam->GetMinECut();
442 fToUnfold = recParam->GetUnfold();
443 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
444 fECALocMaxCut = recParam->GetLocMaxCut();
445 fTimeCut = recParam->GetTimeCut();
446 fTimeMin = recParam->GetTimeMin();
447 fTimeMax = recParam->GetTimeMax();
449 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f GeV, fECAW=%.3f, fMinECut=%.3f GeV, fToUnfold=%d, fECALocMaxCut=%.3f GeV, fTimeCut=%e s,fTimeMin=%e s,fTimeMax=%e s",
450 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut,fTimeCut, fTimeMin, fTimeMax));
455 //____________________________________________________________________________
456 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
458 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
460 // = 2 is in different SM; continue searching
461 // neighbours are defined as digits having at least a common vertex
462 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
463 // which is compared to a digit (d2) not yet in a cluster
466 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
467 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
468 static Int_t rowdiff, coldiff;
471 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
472 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
474 // Do not aggregate cells in different SM
475 if(nSupMod1 != nSupMod2 ) return 2;
477 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
478 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
480 rowdiff = TMath::Abs(iphi1 - iphi2);
481 coldiff = TMath::Abs(ieta1 - ieta2) ;
483 // neighbours in same SM with at least common side; May 11, 2007
484 if ((coldiff==0 && TMath::Abs(rowdiff)==1) || (rowdiff==0 && TMath::Abs(coldiff)==1)) rv = 1;
487 //if ((coldiff==0 && TMath::Abs(rowdiff==1)) || (rowdiff==0 && TMath::Abs(coldiff==1)) || (TMath::Abs(rowdiff)==1 && TMath::Abs(coldiff==1))) rv = 1;
489 if (gDebug == 2 && rv==1)
490 printf("AreNeighbours: id1=%d, (%d,%d) \n id2=%d, (%d,%d) \n",d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
495 //____________________________________________________________________________
496 void AliEMCALClusterizerv1::MakeClusters()
498 // Steering method to construct the clusters stored in a list of Reconstructed Points
499 // A cluster is defined as a list of neighbour digits
500 // Mar 03, 2007 by PAI
502 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
506 // Set up TObjArray with pointers to digits to work on
507 TObjArray *digitsC = new TObjArray();
508 TIter nextdigit(fDigitsArr);
509 AliEMCALDigit *digit;
510 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
511 digitsC->AddLast(digit);
514 double e = 0.0, ehs = 0.0;
515 TIter nextdigitC(digitsC);
516 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
517 e = Calibrate(digit->GetAmplitude(), digit->GetTime(),digit->GetId());//Time or TimeR?
518 if ( e < fMinECut) //|| digit->GetTimeR() > fTimeCut ) // time window of cell checked in calibrate
519 digitsC->Remove(digit);
523 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
524 fDigitsArr->GetEntries(),fMinECut,ehs));
528 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
529 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
531 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmplitude(), digit->GetTime(),digit->GetId()) > fECAClusteringThreshold ) ){
532 // start a new Tower RecPoint
533 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
535 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
536 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
537 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
538 fNumberOfECAClusters++ ;
540 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
542 recPoint->AddDigit(*digit, Calibrate(digit->GetAmplitude(), digit->GetTime(),digit->GetId())) ; //Time or TimeR?
543 TObjArray clusterDigits;
544 clusterDigits.AddLast(digit);
545 digitsC->Remove(digit) ;
547 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
548 Calibrate(digit->GetAmplitude(),digit->GetTime(),digit->GetId()), fECAClusteringThreshold)); //Time or TimeR?
549 Float_t time = digit->GetTime();//Time or TimeR?
550 // Grow cluster by finding neighbours
551 TIter nextClusterDigit(&clusterDigits);
552 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
553 TIter nextdigitN(digitsC);
554 AliEMCALDigit *digitN = 0; // digi neighbor
555 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
557 //Do not add digits with too different time
558 if(TMath::Abs(time - digitN->GetTime()) > fTimeCut ) continue; //Time or TimeR?
560 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
562 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmplitude(), digitN->GetTime(), digitN->GetId()) ) ;//Time or TimeR?
563 clusterDigits.AddLast(digitN) ;
564 digitsC->Remove(digitN) ;
566 } // scan over digits
567 } // scan over digits already in cluster
569 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
575 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
578 //____________________________________________________________________________
579 void AliEMCALClusterizerv1::MakeUnfolding()
581 // Unfolds clusters using the shape of an ElectroMagnetic shower
582 // Performs unfolding of all clusters
584 if(fNumberOfECAClusters > 0){
586 AliFatal("Did not get geometry from EMCALLoader") ;
587 Int_t nModulesToUnfold = fGeom->GetNCells();
589 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
591 for(index = 0 ; index < numberofNotUnfolded ; index++){
593 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
597 recPoint->GetGlobalPosition(gpos);
598 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
599 if(absId > nModulesToUnfold)
602 Int_t nMultipl = recPoint->GetMultiplicity() ;
603 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
604 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
605 Int_t nMax = recPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
607 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
608 UnfoldCluster(recPoint, nMax, maxAt, maxAtEnergy) ;
609 fRecPoints->Remove(recPoint);
610 fRecPoints->Compress() ;
612 fNumberOfECAClusters-- ;
613 numberofNotUnfolded-- ;
616 recPoint->SetNExMax(1) ; //Only one local maximum
620 delete[] maxAtEnergy ;
623 // End of Unfolding of clusters
626 //____________________________________________________________________________
627 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
629 // Shape of the shower
630 // If you change this function, change also the gradient evaluation in ChiSquare()
632 Double_t r = sqrt(x*x+y*y);
633 Double_t r133 = TMath::Power(r, 1.33) ;
634 Double_t r669 = TMath::Power(r, 6.69) ;
635 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
639 //____________________________________________________________________________
640 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
642 AliEMCALDigit ** maxAt,
643 Float_t * maxAtEnergy)
645 // Performs the unfolding of a cluster with nMax overlapping showers
646 Int_t nPar = 3 * nMax ;
647 Float_t * fitparameters = new Float_t[nPar] ;
650 AliFatal("Did not get geometry from EMCALLoader") ;
652 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
654 // Fit failed, return and remove cluster
655 iniTower->SetNExMax(-1) ;
656 delete[] fitparameters ;
660 // create unfolded rec points and fill them with new energy lists
661 // First calculate energy deposited in each sell in accordance with
662 // fit (without fluctuations): efit[]
663 // and later correct this number in acordance with actual energy
666 Int_t nDigits = iniTower->GetMultiplicity() ;
667 Float_t * efit = new Float_t[nDigits] ;
668 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
669 Float_t xpar=0.,zpar=0.,epar=0. ;
671 AliEMCALDigit * digit = 0 ;
672 Int_t * digitsList = iniTower->GetDigitsList() ;
676 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
677 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
678 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
682 while(iparam < nPar ){
683 xpar = fitparameters[iparam] ;
684 zpar = fitparameters[iparam+1] ;
685 epar = fitparameters[iparam+2] ;
687 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
692 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
693 // so that energy deposited in each cell is distributed between new clusters proportionally
694 // to its contribution to efit
696 Float_t * energiesList = iniTower->GetEnergiesList() ;
700 while(iparam < nPar ){
701 xpar = fitparameters[iparam] ;
702 zpar = fitparameters[iparam+1] ;
703 epar = fitparameters[iparam+2] ;
706 AliEMCALRecPoint * recPoint = 0 ;
708 if(fNumberOfECAClusters >= fRecPoints->GetSize())
709 fRecPoints->Expand(2*fNumberOfECAClusters) ;
711 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
712 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
713 fNumberOfECAClusters++ ;
714 recPoint->SetNExMax((Int_t)nPar/3) ;
717 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
718 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
719 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
721 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
722 eDigit = energiesList[iDigit] * ratio ;
723 recPoint->AddDigit( *digit, eDigit ) ;
727 delete[] fitparameters ;
732 //_____________________________________________________________________________
733 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
735 Double_t * x, Int_t iflag)
737 // Calculates the Chi square for the cluster unfolding minimization
738 // Number of parameters, Gradient, Chi squared, parameters, what to do
740 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
742 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
743 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
744 // A bit buggy way to get an access to the geometry
746 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
748 Int_t * digitsList = recPoint->GetDigitsList() ;
750 Int_t nOdigits = recPoint->GetDigitsMultiplicity() ;
752 Float_t * energiesList = recPoint->GetEnergiesList() ;
758 for(iparam = 0 ; iparam < nPar ; iparam++)
759 Grad[iparam] = 0 ; // Will evaluate gradient
763 AliEMCALDigit * digit ;
766 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
768 digit = dynamic_cast<AliEMCALDigit*>( digits->At( digitsList[iDigit] ) );
772 Double_t yDigit=0 ;//not used yet, assumed to be 0
774 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
776 if(iflag == 2){ // calculate gradient
779 while(iParam < nPar ){
780 Double_t dx = (xDigit - x[iParam]) ;
782 Double_t dz = (zDigit - x[iParam]) ;
784 efit += x[iParam] * ShowerShape(dx,dz) ;
787 Double_t sum = 2. * (efit - energiesList[iDigit]) / energiesList[iDigit] ; // Here we assume, that sigma = sqrt(E)
789 while(iParam < nPar ){
790 Double_t xpar = x[iParam] ;
791 Double_t zpar = x[iParam+1] ;
792 Double_t epar = x[iParam+2] ;
793 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
794 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
795 Double_t r133 = TMath::Power(dr, 1.33);
796 Double_t r669 = TMath::Power(dr,6.69);
797 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
798 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
800 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
802 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
804 Grad[iParam] += shape ; // Derivative over energy
812 while(iparam < nPar ){
813 Double_t xpar = x[iparam] ;
814 Double_t zpar = x[iparam+1] ;
815 Double_t epar = x[iparam+2] ;
817 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
820 fret += (efit-energiesList[iDigit])*(efit-energiesList[iDigit])/energiesList[iDigit] ;
821 // Here we assume, that sigma = sqrt(E)
824 //____________________________________________________________________________
825 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
827 // Print clusterizer parameters
829 TString message("\n") ;
831 if( strcmp(GetName(), "") !=0 ){
835 TString taskName(Version()) ;
837 printf("--------------- ");
838 printf("%s",taskName.Data()) ;
840 printf("Clusterizing digits: ");
841 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
842 printf("\n ECA Logarithmic weight = %f", fECAW0);
844 printf("\nUnfolding on\n");
846 printf("\nUnfolding off\n");
848 printf("------------------------------------------------------------------");
851 printf("AliEMCALClusterizerv1 not initialized ") ;
854 //____________________________________________________________________________
855 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
857 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
858 if(strstr(option,"deb")) {
859 printf("PrintRecPoints: Clusterization result:") ;
861 printf(" Found %d ECA Rec Points\n ",
862 fRecPoints->GetEntriesFast()) ;
865 if(strstr(option,"all")) {
866 if(strstr(option,"deb")) {
867 printf("\n-----------------------------------------------------------------------\n") ;
868 printf("Clusters in ECAL section\n") ;
869 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
873 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
874 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
876 //rp->GetGlobalPosition(globalpos);
878 rp->GetLocalPosition(localpos);
880 rp->GetElipsAxis(lambda);
883 primaries = rp->GetPrimaries(nprimaries);
884 if(strstr(option,"deb"))
885 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
886 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
887 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
888 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
889 if(strstr(option,"deb")){
890 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
891 printf("%d ", primaries[iprimary] ) ;
896 if(strstr(option,"deb"))
897 printf("\n-----------------------------------------------------------------------\n");
901 //___________________________________________________________________
902 void AliEMCALClusterizerv1::PrintRecoInfo()
904 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );