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. *
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 *
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11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
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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 if(fCaloPed->IsBadChannel(iSupMod,ieta,iphi)) {
188 AliDebug(2,Form("Tower from SM %d, ieta %d, iphi %d is BAD!!!\n",iSupMod,ieta,iphi));
192 fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi);
193 fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
195 return -fADCpedestalECA + amp * fADCchannelECA ;
198 else //Return energy with default parameters if calibration is not available
199 return -fADCpedestalECA + amp * fADCchannelECA ;
203 //____________________________________________________________________________
204 void AliEMCALClusterizerv1::Digits2Clusters(Option_t * option)
206 // Steering method to perform clusterization for the current event
209 if(strstr(option,"tim"))
210 gBenchmark->Start("EMCALClusterizer");
212 if(strstr(option,"print"))
215 //Get calibration parameters from file or digitizer default values.
216 GetCalibrationParameters() ;
218 //Get dead channel map from file or digitizer default values.
219 GetCaloCalibPedestal() ;
221 fNumberOfECAClusters = 0;
223 MakeClusters() ; //only the real clusters
230 //Evaluate position, dispersion and other RecPoint properties for EC section
231 for(index = 0; index < fRecPoints->GetEntries(); index++) {
232 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalAll(fECAW0,fDigitsArr) ;
233 //For each rec.point set the distance to the nearest bad crystal
234 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalDistanceToBadChannels(fCaloPed);
239 for(index = 0; index < fRecPoints->GetEntries(); index++) {
240 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->SetIndexInList(index) ;
241 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->Print();
246 if(strstr(option,"deb") || strstr(option,"all"))
247 PrintRecPoints(option) ;
249 AliDebug(1,Form("EMCAL Clusterizer found %d Rec Points",fRecPoints->GetEntriesFast()));
251 fRecPoints->Delete();
253 if(strstr(option,"tim")){
254 gBenchmark->Stop("EMCALClusterizer");
255 printf("Exec took %f seconds for Clusterizing",
256 gBenchmark->GetCpuTime("EMCALClusterizer"));
260 //____________________________________________________________________________
261 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * recPoint, AliEMCALDigit ** maxAt,
262 const Float_t* maxAtEnergy,
263 Int_t nPar, Float_t * fitparameters) const
265 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
266 // The initial values for fitting procedure are set equal to the
267 // positions of local maxima.
268 // Cluster will be fitted as a superposition of nPar/3
269 // electromagnetic showers
271 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
273 gMinuit->mncler(); // Reset Minuit's list of paramters
274 gMinuit->SetPrintLevel(-1) ; // No Printout
275 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
276 // To set the address of the minimization function
277 TList * toMinuit = new TList();
278 toMinuit->AddAt(recPoint,0) ;
279 toMinuit->AddAt(fDigitsArr,1) ;
280 toMinuit->AddAt(fGeom,2) ;
282 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
284 // filling initial values for fit parameters
285 AliEMCALDigit * digit ;
289 Int_t nDigits = (Int_t) nPar / 3 ;
293 for(iDigit = 0; iDigit < nDigits; iDigit++){
294 digit = maxAt[iDigit];
299 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
301 Float_t energy = maxAtEnergy[iDigit] ;
303 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
306 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
309 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
312 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
315 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
318 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
323 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
324 // The number of function call slightly depends on it.
325 //Double_t p1 = 1.0 ;
328 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
329 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
330 gMinuit->SetMaxIterations(5);
331 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
332 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
334 if(ierflg == 4){ // Minimum not found
335 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
338 for(index = 0; index < nPar; index++){
341 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
342 fitparameters[index] = val ;
350 //____________________________________________________________________________
351 void AliEMCALClusterizerv1::GetCalibrationParameters()
353 // Set calibration parameters:
354 // if calibration database exists, they are read from database,
355 // otherwise, they are taken from digitizer.
357 // It is a user responsilibity to open CDB before reconstruction,
359 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
361 //Check if calibration is stored in data base
365 AliCDBEntry *entry = (AliCDBEntry*)
366 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
367 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
371 AliFatal("Calibration parameters not found in CDB!");
375 //____________________________________________________________________________
376 void AliEMCALClusterizerv1::GetCaloCalibPedestal()
378 // Set calibration parameters:
379 // if calibration database exists, they are read from database,
380 // otherwise, they are taken from digitizer.
382 // It is a user responsilibity to open CDB before reconstruction,
384 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
386 //Check if calibration is stored in data base
390 AliCDBEntry *entry = (AliCDBEntry*)
391 AliCDBManager::Instance()->Get("EMCAL/Calib/Pedestals");
392 if (entry) fCaloPed = (AliCaloCalibPedestal*) entry->GetObject();
396 AliFatal("Pedestal info not found in CDB!");
401 //____________________________________________________________________________
402 void AliEMCALClusterizerv1::Init()
404 // Make all memory allocations which can not be done in default constructor.
405 // Attach the Clusterizer task to the list of EMCAL tasks
407 AliRunLoader *rl = AliRunLoader::Instance();
408 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
409 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
411 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
413 AliDebug(1,Form("geom 0x%x",fGeom));
416 gMinuit = new TMinuit(100) ;
420 //____________________________________________________________________________
421 void AliEMCALClusterizerv1::InitParameters()
423 // Initializes the parameters for the Clusterizer
424 fNumberOfECAClusters = 0;
425 fTimeCut = 300e-9 ; // 300 ns time cut (to be tuned)
430 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
432 AliFatal("Reconstruction parameters for EMCAL not set!");
434 fECAClusteringThreshold = recParam->GetClusteringThreshold();
435 fECAW0 = recParam->GetW0();
436 fMinECut = recParam->GetMinECut();
437 fToUnfold = recParam->GetUnfold();
438 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
439 fECALocMaxCut = recParam->GetLocMaxCut();
441 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f, fECAW=%.3f, fMinECut=%.3f, fToUnfold=%d, fECALocMaxCut=%.3f",
442 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut));
447 //____________________________________________________________________________
448 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
450 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
452 // = 2 is in different SM; continue searching
453 // neighbours are defined as digits having at least a common vertex
454 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
455 // which is compared to a digit (d2) not yet in a cluster
458 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
459 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
460 static Int_t rowdiff, coldiff;
463 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
464 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
465 if(nSupMod1 != nSupMod2) return 2; // different SM
467 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
468 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
470 rowdiff = TMath::Abs(iphi1 - iphi2);
471 coldiff = TMath::Abs(ieta1 - ieta2) ;
473 // neighbours with at least commom side; May 11, 2007
474 if ((coldiff==0 && abs(rowdiff)==1) || (rowdiff==0 && abs(coldiff)==1)) rv = 1;
476 if (gDebug == 2 && rv==1)
477 printf("AreNeighbours: neighbours=%d, id1=%d, relid1=%d,%d \n id2=%d, relid2=%d,%d \n",
478 rv, d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
483 //____________________________________________________________________________
484 void AliEMCALClusterizerv1::MakeClusters()
486 // Steering method to construct the clusters stored in a list of Reconstructed Points
487 // A cluster is defined as a list of neighbour digits
488 // Mar 03, 2007 by PAI
490 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
494 // Set up TObjArray with pointers to digits to work on
495 TObjArray *digitsC = new TObjArray();
496 TIter nextdigit(fDigitsArr);
497 AliEMCALDigit *digit;
498 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
499 digitsC->AddLast(digit);
502 double e = 0.0, ehs = 0.0;
503 TIter nextdigitC(digitsC);
505 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
506 e = Calibrate(digit->GetAmp(), digit->GetId());
507 if ( e < fMinECut || digit->GetTimeR() > fTimeCut )
508 digitsC->Remove(digit);
512 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
513 fDigitsArr->GetEntries(),fMinECut,ehs));
517 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
518 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
520 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmp(), digit->GetId()) > fECAClusteringThreshold ) ){
521 // start a new Tower RecPoint
522 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
524 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
525 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
526 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
527 fNumberOfECAClusters++ ;
529 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
531 recPoint->AddDigit(*digit, Calibrate(digit->GetAmp(), digit->GetId())) ;
532 TObjArray clusterDigits;
533 clusterDigits.AddLast(digit);
534 digitsC->Remove(digit) ;
536 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
537 Calibrate(digit->GetAmp(),digit->GetId()), fECAClusteringThreshold));
539 // Grow cluster by finding neighbours
540 TIter nextClusterDigit(&clusterDigits);
541 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
542 TIter nextdigitN(digitsC);
543 AliEMCALDigit *digitN = 0; // digi neighbor
544 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
545 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
546 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmp(),digitN->GetId()) ) ;
547 clusterDigits.AddLast(digitN) ;
548 digitsC->Remove(digitN) ;
550 } // scan over digits
551 } // scan over digits already in cluster
553 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
559 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
562 //____________________________________________________________________________
563 void AliEMCALClusterizerv1::MakeUnfolding()
565 // Unfolds clusters using the shape of an ElectroMagnetic shower
566 // Performs unfolding of all clusters
568 if(fNumberOfECAClusters > 0){
570 AliFatal("Did not get geometry from EMCALLoader") ;
571 Int_t nModulesToUnfold = fGeom->GetNCells();
573 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
575 for(index = 0 ; index < numberofNotUnfolded ; index++){
577 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
581 recPoint->GetGlobalPosition(gpos);
582 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
583 if(absId > nModulesToUnfold)
586 Int_t nMultipl = recPoint->GetMultiplicity() ;
587 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
588 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
589 Int_t nMax = recPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
591 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
592 UnfoldCluster(recPoint, nMax, maxAt, maxAtEnergy) ;
593 fRecPoints->Remove(recPoint);
594 fRecPoints->Compress() ;
596 fNumberOfECAClusters-- ;
597 numberofNotUnfolded-- ;
600 recPoint->SetNExMax(1) ; //Only one local maximum
604 delete[] maxAtEnergy ;
607 // End of Unfolding of clusters
610 //____________________________________________________________________________
611 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
613 // Shape of the shower
614 // If you change this function, change also the gradient evaluation in ChiSquare()
616 Double_t r = sqrt(x*x+y*y);
617 Double_t r133 = TMath::Power(r, 1.33) ;
618 Double_t r669 = TMath::Power(r, 6.69) ;
619 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
623 //____________________________________________________________________________
624 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
626 AliEMCALDigit ** maxAt,
627 Float_t * maxAtEnergy)
629 // Performs the unfolding of a cluster with nMax overlapping showers
630 Int_t nPar = 3 * nMax ;
631 Float_t * fitparameters = new Float_t[nPar] ;
634 AliFatal("Did not get geometry from EMCALLoader") ;
636 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
638 // Fit failed, return and remove cluster
639 iniTower->SetNExMax(-1) ;
640 delete[] fitparameters ;
644 // create unfolded rec points and fill them with new energy lists
645 // First calculate energy deposited in each sell in accordance with
646 // fit (without fluctuations): efit[]
647 // and later correct this number in acordance with actual energy
650 Int_t nDigits = iniTower->GetMultiplicity() ;
651 Float_t * efit = new Float_t[nDigits] ;
652 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
653 Float_t xpar=0.,zpar=0.,epar=0. ;
655 AliEMCALDigit * digit = 0 ;
656 Int_t * digitsList = iniTower->GetDigitsList() ;
660 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
661 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
662 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
666 while(iparam < nPar ){
667 xpar = fitparameters[iparam] ;
668 zpar = fitparameters[iparam+1] ;
669 epar = fitparameters[iparam+2] ;
671 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
676 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
677 // so that energy deposited in each cell is distributed between new clusters proportionally
678 // to its contribution to efit
680 Float_t * energiesList = iniTower->GetEnergiesList() ;
684 while(iparam < nPar ){
685 xpar = fitparameters[iparam] ;
686 zpar = fitparameters[iparam+1] ;
687 epar = fitparameters[iparam+2] ;
690 AliEMCALRecPoint * recPoint = 0 ;
692 if(fNumberOfECAClusters >= fRecPoints->GetSize())
693 fRecPoints->Expand(2*fNumberOfECAClusters) ;
695 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
696 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
697 fNumberOfECAClusters++ ;
698 recPoint->SetNExMax((Int_t)nPar/3) ;
701 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
702 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
703 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
705 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
706 eDigit = energiesList[iDigit] * ratio ;
707 recPoint->AddDigit( *digit, eDigit ) ;
711 delete[] fitparameters ;
716 //_____________________________________________________________________________
717 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
719 Double_t * x, Int_t iflag)
721 // Calculates the Chi square for the cluster unfolding minimization
722 // Number of parameters, Gradient, Chi squared, parameters, what to do
724 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
726 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
727 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
728 // A bit buggy way to get an access to the geometry
730 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
732 Int_t * digitsList = recPoint->GetDigitsList() ;
734 Int_t nOdigits = recPoint->GetDigitsMultiplicity() ;
736 Float_t * energiesList = recPoint->GetEnergiesList() ;
742 for(iparam = 0 ; iparam < nPar ; iparam++)
743 Grad[iparam] = 0 ; // Will evaluate gradient
747 AliEMCALDigit * digit ;
750 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
752 digit = dynamic_cast<AliEMCALDigit*>( digits->At( digitsList[iDigit] ) );
756 Double_t yDigit=0 ;//not used yet, assumed to be 0
758 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
760 if(iflag == 2){ // calculate gradient
763 while(iParam < nPar ){
764 Double_t dx = (xDigit - x[iParam]) ;
766 Double_t dz = (zDigit - x[iParam]) ;
768 efit += x[iParam] * ShowerShape(dx,dz) ;
771 Double_t sum = 2. * (efit - energiesList[iDigit]) / energiesList[iDigit] ; // Here we assume, that sigma = sqrt(E)
773 while(iParam < nPar ){
774 Double_t xpar = x[iParam] ;
775 Double_t zpar = x[iParam+1] ;
776 Double_t epar = x[iParam+2] ;
777 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
778 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
779 Double_t r133 = TMath::Power(dr, 1.33);
780 Double_t r669 = TMath::Power(dr,6.69);
781 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
782 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
784 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
786 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
788 Grad[iParam] += shape ; // Derivative over energy
796 while(iparam < nPar ){
797 Double_t xpar = x[iparam] ;
798 Double_t zpar = x[iparam+1] ;
799 Double_t epar = x[iparam+2] ;
801 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
804 fret += (efit-energiesList[iDigit])*(efit-energiesList[iDigit])/energiesList[iDigit] ;
805 // Here we assume, that sigma = sqrt(E)
808 //____________________________________________________________________________
809 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
811 // Print clusterizer parameters
813 TString message("\n") ;
815 if( strcmp(GetName(), "") !=0 ){
819 TString taskName(Version()) ;
821 printf("--------------- ");
822 printf("%s",taskName.Data()) ;
824 printf("Clusterizing digits: ");
825 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
826 printf("\n ECA Logarithmic weight = %f", fECAW0);
828 printf("\nUnfolding on\n");
830 printf("\nUnfolding off\n");
832 printf("------------------------------------------------------------------");
835 printf("AliEMCALClusterizerv1 not initialized ") ;
838 //____________________________________________________________________________
839 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
841 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
842 if(strstr(option,"deb")) {
843 printf("PrintRecPoints: Clusterization result:") ;
845 printf(" Found %d ECA Rec Points\n ",
846 fRecPoints->GetEntriesFast()) ;
849 if(strstr(option,"all")) {
850 if(strstr(option,"deb")) {
851 printf("\n-----------------------------------------------------------------------\n") ;
852 printf("Clusters in ECAL section\n") ;
853 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
857 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
858 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
860 //rp->GetGlobalPosition(globalpos);
862 rp->GetLocalPosition(localpos);
864 rp->GetElipsAxis(lambda);
867 primaries = rp->GetPrimaries(nprimaries);
868 if(strstr(option,"deb"))
869 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
870 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
871 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
872 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
873 if(strstr(option,"deb")){
874 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
875 printf("%d ", primaries[iprimary] ) ;
880 if(strstr(option,"deb"))
881 printf("\n-----------------------------------------------------------------------\n");
885 //___________________________________________________________________
886 void AliEMCALClusterizerv1::PrintRecoInfo()
888 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );