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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8 * documentation strictly for non-commercial purposes is hereby granted *
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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 if(strstr(option,"tim")){
252 gBenchmark->Stop("EMCALClusterizer");
253 printf("Exec took %f seconds for Clusterizing",
254 gBenchmark->GetCpuTime("EMCALClusterizer"));
258 //____________________________________________________________________________
259 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * recPoint, AliEMCALDigit ** maxAt,
260 const Float_t* maxAtEnergy,
261 Int_t nPar, Float_t * fitparameters) const
263 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
264 // The initial values for fitting procedure are set equal to the
265 // positions of local maxima.
266 // Cluster will be fitted as a superposition of nPar/3
267 // electromagnetic showers
269 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
271 gMinuit->mncler(); // Reset Minuit's list of paramters
272 gMinuit->SetPrintLevel(-1) ; // No Printout
273 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
274 // To set the address of the minimization function
275 TList * toMinuit = new TList();
276 toMinuit->AddAt(recPoint,0) ;
277 toMinuit->AddAt(fDigitsArr,1) ;
278 toMinuit->AddAt(fGeom,2) ;
280 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
282 // filling initial values for fit parameters
283 AliEMCALDigit * digit ;
287 Int_t nDigits = (Int_t) nPar / 3 ;
291 for(iDigit = 0; iDigit < nDigits; iDigit++){
292 digit = maxAt[iDigit];
297 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
299 Float_t energy = maxAtEnergy[iDigit] ;
301 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
304 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
307 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
310 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
313 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
316 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
321 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
322 // The number of function call slightly depends on it.
323 //Double_t p1 = 1.0 ;
326 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
327 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
328 gMinuit->SetMaxIterations(5);
329 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
330 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
332 if(ierflg == 4){ // Minimum not found
333 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
336 for(index = 0; index < nPar; index++){
339 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
340 fitparameters[index] = val ;
348 //____________________________________________________________________________
349 void AliEMCALClusterizerv1::GetCalibrationParameters()
351 // Set calibration parameters:
352 // if calibration database exists, they are read from database,
353 // otherwise, they are taken from digitizer.
355 // It is a user responsilibity to open CDB before reconstruction,
357 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
359 //Check if calibration is stored in data base
363 AliCDBEntry *entry = (AliCDBEntry*)
364 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
365 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
369 AliFatal("Calibration parameters not found in CDB!");
373 //____________________________________________________________________________
374 void AliEMCALClusterizerv1::GetCaloCalibPedestal()
376 // Set calibration parameters:
377 // if calibration database exists, they are read from database,
378 // otherwise, they are taken from digitizer.
380 // It is a user responsilibity to open CDB before reconstruction,
382 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
384 //Check if calibration is stored in data base
388 AliCDBEntry *entry = (AliCDBEntry*)
389 AliCDBManager::Instance()->Get("EMCAL/Calib/Pedestals");
390 if (entry) fCaloPed = (AliCaloCalibPedestal*) entry->GetObject();
394 AliFatal("Pedestal info not found in CDB!");
399 //____________________________________________________________________________
400 void AliEMCALClusterizerv1::Init()
402 // Make all memory allocations which can not be done in default constructor.
403 // Attach the Clusterizer task to the list of EMCAL tasks
405 AliRunLoader *rl = AliRunLoader::Instance();
406 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
407 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
409 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
411 AliDebug(1,Form("geom 0x%x",fGeom));
414 gMinuit = new TMinuit(100) ;
418 //____________________________________________________________________________
419 void AliEMCALClusterizerv1::InitParameters()
421 // Initializes the parameters for the Clusterizer
422 fNumberOfECAClusters = 0;
423 fTimeCut = 300e-9 ; // 300 ns time cut (to be tuned)
428 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
430 AliFatal("Reconstruction parameters for EMCAL not set!");
432 fECAClusteringThreshold = recParam->GetClusteringThreshold();
433 fECAW0 = recParam->GetW0();
434 fMinECut = recParam->GetMinECut();
435 fToUnfold = recParam->GetUnfold();
436 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
437 fECALocMaxCut = recParam->GetLocMaxCut();
439 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f, fECAW=%.3f, fMinECut=%.3f, fToUnfold=%d, fECALocMaxCut=%.3f",
440 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut));
445 //____________________________________________________________________________
446 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
448 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
450 // = 2 is in different SM; continue searching
451 // neighbours are defined as digits having at least a common vertex
452 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
453 // which is compared to a digit (d2) not yet in a cluster
456 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
457 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
458 static Int_t rowdiff, coldiff;
461 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
462 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
463 if(nSupMod1 != nSupMod2) return 2; // different SM
465 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
466 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
468 rowdiff = TMath::Abs(iphi1 - iphi2);
469 coldiff = TMath::Abs(ieta1 - ieta2) ;
471 // neighbours with at least commom side; May 11, 2007
472 if ((coldiff==0 && abs(rowdiff)==1) || (rowdiff==0 && abs(coldiff)==1)) rv = 1;
474 if (gDebug == 2 && rv==1)
475 printf("AreNeighbours: neighbours=%d, id1=%d, relid1=%d,%d \n id2=%d, relid2=%d,%d \n",
476 rv, d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
481 //____________________________________________________________________________
482 void AliEMCALClusterizerv1::MakeClusters()
484 // Steering method to construct the clusters stored in a list of Reconstructed Points
485 // A cluster is defined as a list of neighbour digits
486 // Mar 03, 2007 by PAI
488 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
492 // Set up TObjArray with pointers to digits to work on
493 TObjArray *digitsC = new TObjArray();
494 TIter nextdigit(fDigitsArr);
495 AliEMCALDigit *digit;
496 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
497 digitsC->AddLast(digit);
500 double e = 0.0, ehs = 0.0;
501 TIter nextdigitC(digitsC);
503 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
504 e = Calibrate(digit->GetAmp(), digit->GetId());
505 if ( e < fMinECut || digit->GetTimeR() > fTimeCut )
506 digitsC->Remove(digit);
510 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
511 fDigitsArr->GetEntries(),fMinECut,ehs));
515 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
516 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
518 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmp(), digit->GetId()) > fECAClusteringThreshold ) ){
519 // start a new Tower RecPoint
520 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
522 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
523 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
524 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
525 fNumberOfECAClusters++ ;
527 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
529 recPoint->AddDigit(*digit, Calibrate(digit->GetAmp(), digit->GetId())) ;
530 TObjArray clusterDigits;
531 clusterDigits.AddLast(digit);
532 digitsC->Remove(digit) ;
534 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
535 Calibrate(digit->GetAmp(),digit->GetId()), fECAClusteringThreshold));
537 // Grow cluster by finding neighbours
538 TIter nextClusterDigit(&clusterDigits);
539 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
540 TIter nextdigitN(digitsC);
541 AliEMCALDigit *digitN = 0; // digi neighbor
542 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
543 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
544 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmp(),digitN->GetId()) ) ;
545 clusterDigits.AddLast(digitN) ;
546 digitsC->Remove(digitN) ;
548 } // scan over digits
549 } // scan over digits already in cluster
551 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
557 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
560 //____________________________________________________________________________
561 void AliEMCALClusterizerv1::MakeUnfolding()
563 // Unfolds clusters using the shape of an ElectroMagnetic shower
564 // Performs unfolding of all clusters
566 if(fNumberOfECAClusters > 0){
568 AliFatal("Did not get geometry from EMCALLoader") ;
569 Int_t nModulesToUnfold = fGeom->GetNCells();
571 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
573 for(index = 0 ; index < numberofNotUnfolded ; index++){
575 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
579 recPoint->GetGlobalPosition(gpos);
580 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
581 if(absId > nModulesToUnfold)
584 Int_t nMultipl = recPoint->GetMultiplicity() ;
585 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
586 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
587 Int_t nMax = recPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
589 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
590 UnfoldCluster(recPoint, nMax, maxAt, maxAtEnergy) ;
591 fRecPoints->Remove(recPoint);
592 fRecPoints->Compress() ;
594 fNumberOfECAClusters-- ;
595 numberofNotUnfolded-- ;
598 recPoint->SetNExMax(1) ; //Only one local maximum
602 delete[] maxAtEnergy ;
605 // End of Unfolding of clusters
608 //____________________________________________________________________________
609 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
611 // Shape of the shower
612 // If you change this function, change also the gradient evaluation in ChiSquare()
614 Double_t r = sqrt(x*x+y*y);
615 Double_t r133 = TMath::Power(r, 1.33) ;
616 Double_t r669 = TMath::Power(r, 6.69) ;
617 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
621 //____________________________________________________________________________
622 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
624 AliEMCALDigit ** maxAt,
625 Float_t * maxAtEnergy)
627 // Performs the unfolding of a cluster with nMax overlapping showers
628 Int_t nPar = 3 * nMax ;
629 Float_t * fitparameters = new Float_t[nPar] ;
632 AliFatal("Did not get geometry from EMCALLoader") ;
634 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
636 // Fit failed, return and remove cluster
637 iniTower->SetNExMax(-1) ;
638 delete[] fitparameters ;
642 // create unfolded rec points and fill them with new energy lists
643 // First calculate energy deposited in each sell in accordance with
644 // fit (without fluctuations): efit[]
645 // and later correct this number in acordance with actual energy
648 Int_t nDigits = iniTower->GetMultiplicity() ;
649 Float_t * efit = new Float_t[nDigits] ;
650 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
651 Float_t xpar=0.,zpar=0.,epar=0. ;
653 AliEMCALDigit * digit = 0 ;
654 Int_t * digitsList = iniTower->GetDigitsList() ;
658 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
659 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
660 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
664 while(iparam < nPar ){
665 xpar = fitparameters[iparam] ;
666 zpar = fitparameters[iparam+1] ;
667 epar = fitparameters[iparam+2] ;
669 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
674 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
675 // so that energy deposited in each cell is distributed between new clusters proportionally
676 // to its contribution to efit
678 Float_t * energiesList = iniTower->GetEnergiesList() ;
682 while(iparam < nPar ){
683 xpar = fitparameters[iparam] ;
684 zpar = fitparameters[iparam+1] ;
685 epar = fitparameters[iparam+2] ;
688 AliEMCALRecPoint * recPoint = 0 ;
690 if(fNumberOfECAClusters >= fRecPoints->GetSize())
691 fRecPoints->Expand(2*fNumberOfECAClusters) ;
693 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
694 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
695 fNumberOfECAClusters++ ;
696 recPoint->SetNExMax((Int_t)nPar/3) ;
699 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
700 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
701 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
703 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
704 eDigit = energiesList[iDigit] * ratio ;
705 recPoint->AddDigit( *digit, eDigit ) ;
709 delete[] fitparameters ;
714 //_____________________________________________________________________________
715 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
717 Double_t * x, Int_t iflag)
719 // Calculates the Chi square for the cluster unfolding minimization
720 // Number of parameters, Gradient, Chi squared, parameters, what to do
722 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
724 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
725 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
726 // A bit buggy way to get an access to the geometry
728 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
730 Int_t * digitsList = recPoint->GetDigitsList() ;
732 Int_t nOdigits = recPoint->GetDigitsMultiplicity() ;
734 Float_t * energiesList = recPoint->GetEnergiesList() ;
740 for(iparam = 0 ; iparam < nPar ; iparam++)
741 Grad[iparam] = 0 ; // Will evaluate gradient
745 AliEMCALDigit * digit ;
748 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
750 digit = dynamic_cast<AliEMCALDigit*>( digits->At( digitsList[iDigit] ) );
754 Double_t yDigit=0 ;//not used yet, assumed to be 0
756 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
758 if(iflag == 2){ // calculate gradient
761 while(iParam < nPar ){
762 Double_t dx = (xDigit - x[iParam]) ;
764 Double_t dz = (zDigit - x[iParam]) ;
766 efit += x[iParam] * ShowerShape(dx,dz) ;
769 Double_t sum = 2. * (efit - energiesList[iDigit]) / energiesList[iDigit] ; // Here we assume, that sigma = sqrt(E)
771 while(iParam < nPar ){
772 Double_t xpar = x[iParam] ;
773 Double_t zpar = x[iParam+1] ;
774 Double_t epar = x[iParam+2] ;
775 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
776 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
777 Double_t r133 = TMath::Power(dr, 1.33);
778 Double_t r669 = TMath::Power(dr,6.69);
779 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
780 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
782 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
784 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
786 Grad[iParam] += shape ; // Derivative over energy
794 while(iparam < nPar ){
795 Double_t xpar = x[iparam] ;
796 Double_t zpar = x[iparam+1] ;
797 Double_t epar = x[iparam+2] ;
799 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
802 fret += (efit-energiesList[iDigit])*(efit-energiesList[iDigit])/energiesList[iDigit] ;
803 // Here we assume, that sigma = sqrt(E)
806 //____________________________________________________________________________
807 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
809 // Print clusterizer parameters
811 TString message("\n") ;
813 if( strcmp(GetName(), "") !=0 ){
817 TString taskName(Version()) ;
819 printf("--------------- ");
820 printf("%s",taskName.Data()) ;
822 printf("Clusterizing digits: ");
823 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
824 printf("\n ECA Logarithmic weight = %f", fECAW0);
826 printf("\nUnfolding on\n");
828 printf("\nUnfolding off\n");
830 printf("------------------------------------------------------------------");
833 printf("AliEMCALClusterizerv1 not initialized ") ;
836 //____________________________________________________________________________
837 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
839 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
840 if(strstr(option,"deb")) {
841 printf("PrintRecPoints: Clusterization result:") ;
843 printf(" Found %d ECA Rec Points\n ",
844 fRecPoints->GetEntriesFast()) ;
847 if(strstr(option,"all")) {
848 if(strstr(option,"deb")) {
849 printf("\n-----------------------------------------------------------------------\n") ;
850 printf("Clusters in ECAL section\n") ;
851 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
855 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
856 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
858 //rp->GetGlobalPosition(globalpos);
860 rp->GetLocalPosition(localpos);
862 rp->GetElipsAxis(lambda);
865 primaries = rp->GetPrimaries(nprimaries);
866 if(strstr(option,"deb"))
867 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
868 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
869 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
870 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
871 if(strstr(option,"deb")){
872 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
873 printf("%d ", primaries[iprimary] ) ;
878 if(strstr(option,"deb"))
879 printf("\n-----------------------------------------------------------------------\n");
883 //___________________________________________________________________
884 void AliEMCALClusterizerv1::PrintRecoInfo()
886 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );