1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
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"
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(0.),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(0.),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(0.),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(Int_t amp, 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, 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 if(fCaloPed->IsBadChannel(iSupMod,ieta,iphi)) {
191 AliDebug(2,Form("Tower from SM %d, ieta %d, iphi %d is BAD!!!",iSupMod,ieta,iphi));
195 fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi);
196 fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
198 return -fADCpedestalECA + amp * fADCchannelECA ;
201 else //Return energy with default parameters if calibration is not available
202 return -fADCpedestalECA + amp * fADCchannelECA ;
206 //____________________________________________________________________________
207 void AliEMCALClusterizerv1::Digits2Clusters(Option_t * option)
209 // Steering method to perform clusterization for the current event
212 if(strstr(option,"tim"))
213 gBenchmark->Start("EMCALClusterizer");
215 if(strstr(option,"print"))
218 //Get calibration parameters from file or digitizer default values.
219 GetCalibrationParameters() ;
221 //Get dead channel map from file or digitizer default values.
222 GetCaloCalibPedestal() ;
224 fNumberOfECAClusters = 0;
226 MakeClusters() ; //only the real clusters
233 //Evaluate position, dispersion and other RecPoint properties for EC section
234 for(index = 0; index < fRecPoints->GetEntries(); index++) {
235 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalAll(fECAW0,fDigitsArr) ;
236 //For each rec.point set the distance to the nearest bad crystal
237 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalDistanceToBadChannels(fCaloPed);
242 for(index = 0; index < fRecPoints->GetEntries(); index++) {
243 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->SetIndexInList(index) ;
244 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->Print();
249 if(strstr(option,"deb") || strstr(option,"all"))
250 PrintRecPoints(option) ;
252 AliDebug(1,Form("EMCAL Clusterizer found %d Rec Points",fRecPoints->GetEntriesFast()));
254 fRecPoints->Delete();
256 if(strstr(option,"tim")){
257 gBenchmark->Stop("EMCALClusterizer");
258 printf("Exec took %f seconds for Clusterizing",
259 gBenchmark->GetCpuTime("EMCALClusterizer"));
263 //____________________________________________________________________________
264 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * recPoint, AliEMCALDigit ** maxAt,
265 const Float_t* maxAtEnergy,
266 Int_t nPar, Float_t * fitparameters) const
268 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
269 // The initial values for fitting procedure are set equal to the
270 // positions of local maxima.
271 // Cluster will be fitted as a superposition of nPar/3
272 // electromagnetic showers
274 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
276 gMinuit->mncler(); // Reset Minuit's list of paramters
277 gMinuit->SetPrintLevel(-1) ; // No Printout
278 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
279 // To set the address of the minimization function
280 TList * toMinuit = new TList();
281 toMinuit->AddAt(recPoint,0) ;
282 toMinuit->AddAt(fDigitsArr,1) ;
283 toMinuit->AddAt(fGeom,2) ;
285 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
287 // filling initial values for fit parameters
288 AliEMCALDigit * digit ;
292 Int_t nDigits = (Int_t) nPar / 3 ;
296 for(iDigit = 0; iDigit < nDigits; iDigit++){
297 digit = maxAt[iDigit];
302 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
304 Float_t energy = maxAtEnergy[iDigit] ;
306 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
309 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
312 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
315 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
318 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
321 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
326 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
327 // The number of function call slightly depends on it.
328 //Double_t p1 = 1.0 ;
331 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
332 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
333 gMinuit->SetMaxIterations(5);
334 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
335 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
337 if(ierflg == 4){ // Minimum not found
338 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
341 for(index = 0; index < nPar; index++){
344 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
345 fitparameters[index] = val ;
353 //____________________________________________________________________________
354 void AliEMCALClusterizerv1::GetCalibrationParameters()
356 // Set calibration parameters:
357 // if calibration database exists, they are read from database,
358 // otherwise, they are taken from digitizer.
360 // It is a user responsilibity to open CDB before reconstruction,
362 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
364 //Check if calibration is stored in data base
368 AliCDBEntry *entry = (AliCDBEntry*)
369 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
370 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
374 AliFatal("Calibration parameters not found in CDB!");
378 //____________________________________________________________________________
379 void AliEMCALClusterizerv1::GetCaloCalibPedestal()
381 // Set calibration parameters:
382 // if calibration database exists, they are read from database,
383 // otherwise, they are taken from digitizer.
385 // It is a user responsilibity to open CDB before reconstruction,
387 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
389 //Check if calibration is stored in data base
393 AliCDBEntry *entry = (AliCDBEntry*)
394 AliCDBManager::Instance()->Get("EMCAL/Calib/Pedestals");
395 if (entry) fCaloPed = (AliCaloCalibPedestal*) entry->GetObject();
399 AliFatal("Pedestal info not found in CDB!");
404 //____________________________________________________________________________
405 void AliEMCALClusterizerv1::Init()
407 // Make all memory allocations which can not be done in default constructor.
408 // Attach the Clusterizer task to the list of EMCAL tasks
410 AliRunLoader *rl = AliRunLoader::Instance();
411 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
412 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
414 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
416 AliDebug(1,Form("geom 0x%x",fGeom));
419 gMinuit = new TMinuit(100) ;
423 //____________________________________________________________________________
424 void AliEMCALClusterizerv1::InitParameters()
426 // Initializes the parameters for the Clusterizer
427 fNumberOfECAClusters = 0;
428 fTimeCut = 1. ; // Originally 300 ns time cut, in data time found to be between 350 ns and 1500 ns, relax the cut for the moment.
434 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
436 AliFatal("Reconstruction parameters for EMCAL not set!");
438 fECAClusteringThreshold = recParam->GetClusteringThreshold();
439 fECAW0 = recParam->GetW0();
440 fMinECut = recParam->GetMinECut();
441 fToUnfold = recParam->GetUnfold();
442 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
443 fECALocMaxCut = recParam->GetLocMaxCut();
445 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f, fECAW=%.3f, fMinECut=%.3f, fToUnfold=%d, fECALocMaxCut=%.3f",
446 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut));
451 //____________________________________________________________________________
452 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
454 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
456 // = 2 is in different SM; continue searching
457 // neighbours are defined as digits having at least a common vertex
458 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
459 // which is compared to a digit (d2) not yet in a cluster
462 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
463 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
464 static Int_t rowdiff, coldiff;
467 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
468 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
469 if(nSupMod1 != nSupMod2) return 2; // different SM
471 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
472 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
474 rowdiff = TMath::Abs(iphi1 - iphi2);
475 coldiff = TMath::Abs(ieta1 - ieta2) ;
477 // neighbours with at least commom side; May 11, 2007
478 if ((coldiff==0 && abs(rowdiff)==1) || (rowdiff==0 && abs(coldiff)==1)) rv = 1;
480 if (gDebug == 2 && rv==1)
481 printf("AreNeighbours: neighbours=%d, id1=%d, relid1=%d,%d \n id2=%d, relid2=%d,%d \n",
482 rv, d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
487 //____________________________________________________________________________
488 void AliEMCALClusterizerv1::MakeClusters()
490 // Steering method to construct the clusters stored in a list of Reconstructed Points
491 // A cluster is defined as a list of neighbour digits
492 // Mar 03, 2007 by PAI
494 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
498 // Set up TObjArray with pointers to digits to work on
499 TObjArray *digitsC = new TObjArray();
500 TIter nextdigit(fDigitsArr);
501 AliEMCALDigit *digit;
502 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
503 digitsC->AddLast(digit);
506 double e = 0.0, ehs = 0.0;
507 TIter nextdigitC(digitsC);
509 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
510 e = Calibrate(digit->GetAmp(), digit->GetId());
511 if ( e < fMinECut || digit->GetTimeR() > fTimeCut )
512 digitsC->Remove(digit);
516 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
517 fDigitsArr->GetEntries(),fMinECut,ehs));
521 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
522 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
524 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmp(), digit->GetId()) > fECAClusteringThreshold ) ){
525 // start a new Tower RecPoint
526 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
528 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
529 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
530 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
531 fNumberOfECAClusters++ ;
533 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
535 recPoint->AddDigit(*digit, Calibrate(digit->GetAmp(), digit->GetId())) ;
536 TObjArray clusterDigits;
537 clusterDigits.AddLast(digit);
538 digitsC->Remove(digit) ;
540 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
541 Calibrate(digit->GetAmp(),digit->GetId()), fECAClusteringThreshold));
543 // Grow cluster by finding neighbours
544 TIter nextClusterDigit(&clusterDigits);
545 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
546 TIter nextdigitN(digitsC);
547 AliEMCALDigit *digitN = 0; // digi neighbor
548 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
549 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
550 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmp(),digitN->GetId()) ) ;
551 clusterDigits.AddLast(digitN) ;
552 digitsC->Remove(digitN) ;
554 } // scan over digits
555 } // scan over digits already in cluster
557 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
563 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
566 //____________________________________________________________________________
567 void AliEMCALClusterizerv1::MakeUnfolding()
569 // Unfolds clusters using the shape of an ElectroMagnetic shower
570 // Performs unfolding of all clusters
572 if(fNumberOfECAClusters > 0){
574 AliFatal("Did not get geometry from EMCALLoader") ;
575 Int_t nModulesToUnfold = fGeom->GetNCells();
577 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
579 for(index = 0 ; index < numberofNotUnfolded ; index++){
581 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
585 recPoint->GetGlobalPosition(gpos);
586 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
587 if(absId > nModulesToUnfold)
590 Int_t nMultipl = recPoint->GetMultiplicity() ;
591 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
592 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
593 Int_t nMax = recPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
595 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
596 UnfoldCluster(recPoint, nMax, maxAt, maxAtEnergy) ;
597 fRecPoints->Remove(recPoint);
598 fRecPoints->Compress() ;
600 fNumberOfECAClusters-- ;
601 numberofNotUnfolded-- ;
604 recPoint->SetNExMax(1) ; //Only one local maximum
608 delete[] maxAtEnergy ;
611 // End of Unfolding of clusters
614 //____________________________________________________________________________
615 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
617 // Shape of the shower
618 // If you change this function, change also the gradient evaluation in ChiSquare()
620 Double_t r = sqrt(x*x+y*y);
621 Double_t r133 = TMath::Power(r, 1.33) ;
622 Double_t r669 = TMath::Power(r, 6.69) ;
623 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
627 //____________________________________________________________________________
628 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
630 AliEMCALDigit ** maxAt,
631 Float_t * maxAtEnergy)
633 // Performs the unfolding of a cluster with nMax overlapping showers
634 Int_t nPar = 3 * nMax ;
635 Float_t * fitparameters = new Float_t[nPar] ;
638 AliFatal("Did not get geometry from EMCALLoader") ;
640 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
642 // Fit failed, return and remove cluster
643 iniTower->SetNExMax(-1) ;
644 delete[] fitparameters ;
648 // create unfolded rec points and fill them with new energy lists
649 // First calculate energy deposited in each sell in accordance with
650 // fit (without fluctuations): efit[]
651 // and later correct this number in acordance with actual energy
654 Int_t nDigits = iniTower->GetMultiplicity() ;
655 Float_t * efit = new Float_t[nDigits] ;
656 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
657 Float_t xpar=0.,zpar=0.,epar=0. ;
659 AliEMCALDigit * digit = 0 ;
660 Int_t * digitsList = iniTower->GetDigitsList() ;
664 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
665 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
666 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
670 while(iparam < nPar ){
671 xpar = fitparameters[iparam] ;
672 zpar = fitparameters[iparam+1] ;
673 epar = fitparameters[iparam+2] ;
675 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
680 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
681 // so that energy deposited in each cell is distributed between new clusters proportionally
682 // to its contribution to efit
684 Float_t * energiesList = iniTower->GetEnergiesList() ;
688 while(iparam < nPar ){
689 xpar = fitparameters[iparam] ;
690 zpar = fitparameters[iparam+1] ;
691 epar = fitparameters[iparam+2] ;
694 AliEMCALRecPoint * recPoint = 0 ;
696 if(fNumberOfECAClusters >= fRecPoints->GetSize())
697 fRecPoints->Expand(2*fNumberOfECAClusters) ;
699 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
700 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
701 fNumberOfECAClusters++ ;
702 recPoint->SetNExMax((Int_t)nPar/3) ;
705 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
706 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
707 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
709 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
710 eDigit = energiesList[iDigit] * ratio ;
711 recPoint->AddDigit( *digit, eDigit ) ;
715 delete[] fitparameters ;
720 //_____________________________________________________________________________
721 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
723 Double_t * x, Int_t iflag)
725 // Calculates the Chi square for the cluster unfolding minimization
726 // Number of parameters, Gradient, Chi squared, parameters, what to do
728 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
730 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
731 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
732 // A bit buggy way to get an access to the geometry
734 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
736 Int_t * digitsList = recPoint->GetDigitsList() ;
738 Int_t nOdigits = recPoint->GetDigitsMultiplicity() ;
740 Float_t * energiesList = recPoint->GetEnergiesList() ;
746 for(iparam = 0 ; iparam < nPar ; iparam++)
747 Grad[iparam] = 0 ; // Will evaluate gradient
751 AliEMCALDigit * digit ;
754 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
756 digit = dynamic_cast<AliEMCALDigit*>( digits->At( digitsList[iDigit] ) );
760 Double_t yDigit=0 ;//not used yet, assumed to be 0
762 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
764 if(iflag == 2){ // calculate gradient
767 while(iParam < nPar ){
768 Double_t dx = (xDigit - x[iParam]) ;
770 Double_t dz = (zDigit - x[iParam]) ;
772 efit += x[iParam] * ShowerShape(dx,dz) ;
775 Double_t sum = 2. * (efit - energiesList[iDigit]) / energiesList[iDigit] ; // Here we assume, that sigma = sqrt(E)
777 while(iParam < nPar ){
778 Double_t xpar = x[iParam] ;
779 Double_t zpar = x[iParam+1] ;
780 Double_t epar = x[iParam+2] ;
781 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
782 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
783 Double_t r133 = TMath::Power(dr, 1.33);
784 Double_t r669 = TMath::Power(dr,6.69);
785 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
786 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
788 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
790 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
792 Grad[iParam] += shape ; // Derivative over energy
800 while(iparam < nPar ){
801 Double_t xpar = x[iparam] ;
802 Double_t zpar = x[iparam+1] ;
803 Double_t epar = x[iparam+2] ;
805 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
808 fret += (efit-energiesList[iDigit])*(efit-energiesList[iDigit])/energiesList[iDigit] ;
809 // Here we assume, that sigma = sqrt(E)
812 //____________________________________________________________________________
813 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
815 // Print clusterizer parameters
817 TString message("\n") ;
819 if( strcmp(GetName(), "") !=0 ){
823 TString taskName(Version()) ;
825 printf("--------------- ");
826 printf("%s",taskName.Data()) ;
828 printf("Clusterizing digits: ");
829 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
830 printf("\n ECA Logarithmic weight = %f", fECAW0);
832 printf("\nUnfolding on\n");
834 printf("\nUnfolding off\n");
836 printf("------------------------------------------------------------------");
839 printf("AliEMCALClusterizerv1 not initialized ") ;
842 //____________________________________________________________________________
843 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
845 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
846 if(strstr(option,"deb")) {
847 printf("PrintRecPoints: Clusterization result:") ;
849 printf(" Found %d ECA Rec Points\n ",
850 fRecPoints->GetEntriesFast()) ;
853 if(strstr(option,"all")) {
854 if(strstr(option,"deb")) {
855 printf("\n-----------------------------------------------------------------------\n") ;
856 printf("Clusters in ECAL section\n") ;
857 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
861 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
862 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
864 //rp->GetGlobalPosition(globalpos);
866 rp->GetLocalPosition(localpos);
868 rp->GetElipsAxis(lambda);
871 primaries = rp->GetPrimaries(nprimaries);
872 if(strstr(option,"deb"))
873 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
874 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
875 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
876 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
877 if(strstr(option,"deb")){
878 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
879 printf("%d ", primaries[iprimary] ) ;
884 if(strstr(option,"deb"))
885 printf("\n-----------------------------------------------------------------------\n");
889 //___________________________________________________________________
890 void AliEMCALClusterizerv1::PrintRecoInfo()
892 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );