1 /**************************************************************************
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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"
81 #include "AliCDBEntry.h"
83 ClassImp(AliEMCALClusterizerv1)
85 //____________________________________________________________________________
86 AliEMCALClusterizerv1::AliEMCALClusterizerv1()
87 : AliEMCALClusterizer(),
91 fNumberOfECAClusters(0),fCalibData(0),
92 fADCchannelECA(0.),fADCpedestalECA(0.),fECAClusteringThreshold(0.),fECALocMaxCut(0.),
93 fECAW0(0.),fTimeCut(0.),fMinECut(0.)
95 // 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),
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
117 // Note for the future: the use on runloader should be avoided or optional at least
118 // another way is to make Init virtual and protected at least such that the deriving classes can overload
124 AliFatal("Geometry not initialized.");
128 gMinuit = new TMinuit(100) ;
132 //____________________________________________________________________________
133 AliEMCALClusterizerv1::~AliEMCALClusterizerv1()
138 //____________________________________________________________________________
139 Float_t AliEMCALClusterizerv1::Calibrate(Int_t amp, Int_t AbsId)
142 // Convert digitized amplitude into energy.
143 // Calibration parameters are taken from calibration data base for raw data,
144 // or from digitizer parameters for simulated data.
149 AliFatal("Did not get geometry from EMCALLoader") ;
158 Bool_t bCell = fGeom->GetCellIndex(AbsId, iSupMod, nModule, nIphi, nIeta) ;
160 fGeom->PrintGeometry();
161 Error("Calibrate()"," Wrong cell id number : %i", AbsId);
165 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,nModule,nIphi, nIeta,iphi,ieta);
167 fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi);
168 fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
170 return -fADCpedestalECA + amp * fADCchannelECA ;
173 else //Return energy with default parameters if calibration is not available
174 return -fADCpedestalECA + amp * fADCchannelECA ;
178 //____________________________________________________________________________
179 void AliEMCALClusterizerv1::Digits2Clusters(Option_t * option)
181 // Steering method to perform clusterization for the current event
184 if(strstr(option,"tim"))
185 gBenchmark->Start("EMCALClusterizer");
187 if(strstr(option,"print"))
190 //Get calibration parameters from file or digitizer default values.
191 GetCalibrationParameters() ;
194 fNumberOfECAClusters = 0;
196 MakeClusters() ; //only the real clusters
203 //Evaluate position, dispersion and other RecPoint properties for EC section
204 for(index = 0; index < fRecPoints->GetEntries(); index++) {
205 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalAll(fECAW0,fDigitsArr) ;
210 for(index = 0; index < fRecPoints->GetEntries(); index++) {
211 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->SetIndexInList(index) ;
212 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->Print();
217 if(strstr(option,"deb") || strstr(option,"all"))
218 PrintRecPoints(option) ;
220 AliDebug(1,Form("EMCAL Clusterizer found %d Rec Points",fRecPoints->GetEntriesFast()));
222 if(strstr(option,"tim")){
223 gBenchmark->Stop("EMCALClusterizer");
224 printf("Exec took %f seconds for Clusterizing",
225 gBenchmark->GetCpuTime("EMCALClusterizer"));
229 //____________________________________________________________________________
230 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * RecPoint, AliEMCALDigit ** maxAt,
231 Float_t* maxAtEnergy,
232 Int_t nPar, Float_t * fitparameters) const
234 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
235 // The initial values for fitting procedure are set equal to the
236 // positions of local maxima.
237 // Cluster will be fitted as a superposition of nPar/3
238 // electromagnetic showers
240 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
242 gMinuit->mncler(); // Reset Minuit's list of paramters
243 gMinuit->SetPrintLevel(-1) ; // No Printout
244 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
245 // To set the address of the minimization function
246 TList * toMinuit = new TList();
247 toMinuit->AddAt(RecPoint,0) ;
248 toMinuit->AddAt(fDigitsArr,1) ;
249 toMinuit->AddAt(fGeom,2) ;
251 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
253 // filling initial values for fit parameters
254 AliEMCALDigit * digit ;
258 Int_t nDigits = (Int_t) nPar / 3 ;
262 for(iDigit = 0; iDigit < nDigits; iDigit++){
263 digit = maxAt[iDigit];
268 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
270 Float_t energy = maxAtEnergy[iDigit] ;
272 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
275 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
278 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
281 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
284 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
287 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
292 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
293 // The number of function call slightly depends on it.
294 //Double_t p1 = 1.0 ;
297 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
298 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
299 gMinuit->SetMaxIterations(5);
300 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
301 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
303 if(ierflg == 4){ // Minimum not found
304 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
307 for(index = 0; index < nPar; index++){
310 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
311 fitparameters[index] = val ;
319 //____________________________________________________________________________
320 void AliEMCALClusterizerv1::GetCalibrationParameters()
322 // Set calibration parameters:
323 // if calibration database exists, they are read from database,
324 // otherwise, they are taken from digitizer.
326 // It is a user responsilibity to open CDB before reconstruction,
328 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
330 //Check if calibration is stored in data base
332 if(!fCalibData && (AliCDBManager::Instance()->IsDefaultStorageSet()))
334 AliCDBEntry *entry = (AliCDBEntry*)
335 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
336 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
340 AliFatal("Calibration parameters not found in CDB!");
344 //____________________________________________________________________________
345 void AliEMCALClusterizerv1::Init()
347 // Make all memory allocations which can not be done in default constructor.
348 // Attach the Clusterizer task to the list of EMCAL tasks
350 AliRunLoader *rl = AliRunLoader::GetRunLoader();
351 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
352 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
354 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
356 AliDebug(1,Form("geom 0x%x",fGeom));
359 gMinuit = new TMinuit(100) ;
363 //____________________________________________________________________________
364 void AliEMCALClusterizerv1::InitParameters()
366 // Initializes the parameters for the Clusterizer
367 fNumberOfECAClusters = 0;
368 fTimeCut = 300e-9 ; // 300 ns time cut (to be tuned)
372 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
374 AliFatal("Reconstruction parameters for EMCAL not set!");
377 fECAClusteringThreshold = recParam->GetClusteringThreshold();
378 fECAW0 = recParam->GetW0();
379 fMinECut = recParam->GetMinECut();
380 fToUnfold = recParam->GetUnfold();
381 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
382 fECALocMaxCut = recParam->GetLocMaxCut();
384 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f, fECAW=%.3f, fMinECut=%.3f, fToUnfold=%d, fECALocMaxCut=%.3f",
385 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut));
390 //____________________________________________________________________________
391 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
393 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
395 // = 2 is in different SM; continue searching
396 // neighbours are defined as digits having at least a common vertex
397 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
398 // which is compared to a digit (d2) not yet in a cluster
401 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
402 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
403 static Int_t rowdiff, coldiff;
406 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
407 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
408 if(nSupMod1 != nSupMod2) return 2; // different SM
410 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
411 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
413 rowdiff = TMath::Abs(iphi1 - iphi2);
414 coldiff = TMath::Abs(ieta1 - ieta2) ;
416 // neighbours with at least commom side; May 11, 2007
417 if ((coldiff==0 && abs(rowdiff)==1) || (rowdiff==0 && abs(coldiff)==1)) rv = 1;
419 if (gDebug == 2 && rv==1)
420 printf("AreNeighbours: neighbours=%d, id1=%d, relid1=%d,%d \n id2=%d, relid2=%d,%d \n",
421 rv, d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
426 //____________________________________________________________________________
427 void AliEMCALClusterizerv1::MakeClusters()
429 // Steering method to construct the clusters stored in a list of Reconstructed Points
430 // A cluster is defined as a list of neighbour digits
431 // Mar 03, 2007 by PAI
433 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
437 // Set up TObjArray with pointers to digits to work on
438 TObjArray *digitsC = new TObjArray();
439 TIter nextdigit(fDigitsArr);
440 AliEMCALDigit *digit;
441 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
442 digitsC->AddLast(digit);
445 double e = 0.0, ehs = 0.0;
446 TIter nextdigitC(digitsC);
448 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
449 e = Calibrate(digit->GetAmp(), digit->GetId());
450 if ( e < fMinECut || digit->GetTimeR() > fTimeCut )
451 digitsC->Remove(digit);
455 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
456 fDigitsArr->GetEntries(),fMinECut,ehs));
460 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
461 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
463 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmp(), digit->GetId()) > fECAClusteringThreshold ) ){
464 // start a new Tower RecPoint
465 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
467 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
468 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
469 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
470 fNumberOfECAClusters++ ;
472 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
474 recPoint->AddDigit(*digit, Calibrate(digit->GetAmp(), digit->GetId())) ;
475 TObjArray clusterDigits;
476 clusterDigits.AddLast(digit);
477 digitsC->Remove(digit) ;
479 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
480 Calibrate(digit->GetAmp(),digit->GetId()), fECAClusteringThreshold));
482 // Grow cluster by finding neighbours
483 TIter nextClusterDigit(&clusterDigits);
484 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
485 TIter nextdigitN(digitsC);
486 AliEMCALDigit *digitN = 0; // digi neighbor
487 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
488 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
489 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmp(),digitN->GetId()) ) ;
490 clusterDigits.AddLast(digitN) ;
491 digitsC->Remove(digitN) ;
493 } // scan over digits
494 } // scan over digits already in cluster
496 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
502 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
505 //____________________________________________________________________________
506 void AliEMCALClusterizerv1::MakeUnfolding()
508 // Unfolds clusters using the shape of an ElectroMagnetic shower
509 // Performs unfolding of all clusters
511 if(fNumberOfECAClusters > 0){
513 AliFatal("Did not get geometry from EMCALLoader") ;
514 Int_t nModulesToUnfold = fGeom->GetNCells();
516 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
518 for(index = 0 ; index < numberofNotUnfolded ; index++){
520 AliEMCALRecPoint * RecPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
524 RecPoint->GetGlobalPosition(gpos);
525 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
526 if(absId > nModulesToUnfold)
529 Int_t nMultipl = RecPoint->GetMultiplicity() ;
530 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
531 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
532 Int_t nMax = RecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
534 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
535 UnfoldCluster(RecPoint, nMax, maxAt, maxAtEnergy) ;
536 fRecPoints->Remove(RecPoint);
537 fRecPoints->Compress() ;
539 fNumberOfECAClusters-- ;
540 numberofNotUnfolded-- ;
543 RecPoint->SetNExMax(1) ; //Only one local maximum
547 delete[] maxAtEnergy ;
550 // End of Unfolding of clusters
553 //____________________________________________________________________________
554 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
556 // Shape of the shower
557 // If you change this function, change also the gradient evaluation in ChiSquare()
559 Double_t r = sqrt(x*x+y*y);
560 Double_t r133 = TMath::Power(r, 1.33) ;
561 Double_t r669 = TMath::Power(r, 6.69) ;
562 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
566 //____________________________________________________________________________
567 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
569 AliEMCALDigit ** maxAt,
570 Float_t * maxAtEnergy)
572 // Performs the unfolding of a cluster with nMax overlapping showers
573 Int_t nPar = 3 * nMax ;
574 Float_t * fitparameters = new Float_t[nPar] ;
577 AliFatal("Did not get geometry from EMCALLoader") ;
579 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
581 // Fit failed, return and remove cluster
582 iniTower->SetNExMax(-1) ;
583 delete[] fitparameters ;
587 // create unfolded rec points and fill them with new energy lists
588 // First calculate energy deposited in each sell in accordance with
589 // fit (without fluctuations): efit[]
590 // and later correct this number in acordance with actual energy
593 Int_t nDigits = iniTower->GetMultiplicity() ;
594 Float_t * efit = new Float_t[nDigits] ;
595 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
596 Float_t xpar=0.,zpar=0.,epar=0. ;
598 AliEMCALDigit * digit = 0 ;
599 Int_t * Digits = iniTower->GetDigitsList() ;
603 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
604 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(Digits[iDigit] ) ) ;
605 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
609 while(iparam < nPar ){
610 xpar = fitparameters[iparam] ;
611 zpar = fitparameters[iparam+1] ;
612 epar = fitparameters[iparam+2] ;
614 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
619 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
620 // so that energy deposited in each cell is distributed between new clusters proportionally
621 // to its contribution to efit
623 Float_t * Energies = iniTower->GetEnergiesList() ;
627 while(iparam < nPar ){
628 xpar = fitparameters[iparam] ;
629 zpar = fitparameters[iparam+1] ;
630 epar = fitparameters[iparam+2] ;
633 AliEMCALRecPoint * RecPoint = 0 ;
635 if(fNumberOfECAClusters >= fRecPoints->GetSize())
636 fRecPoints->Expand(2*fNumberOfECAClusters) ;
638 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
639 RecPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
640 fNumberOfECAClusters++ ;
641 RecPoint->SetNExMax((Int_t)nPar/3) ;
644 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
645 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( Digits[iDigit] ) ) ;
646 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
648 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
649 eDigit = Energies[iDigit] * ratio ;
650 RecPoint->AddDigit( *digit, eDigit ) ;
654 delete[] fitparameters ;
659 //_____________________________________________________________________________
660 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
662 Double_t * x, Int_t iflag)
664 // Calculates the Chi square for the cluster unfolding minimization
665 // Number of parameters, Gradient, Chi squared, parameters, what to do
667 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
669 AliEMCALRecPoint * RecPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
670 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
671 // A bit buggy way to get an access to the geometry
673 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
675 Int_t * Digits = RecPoint->GetDigitsList() ;
677 Int_t nOdigits = RecPoint->GetDigitsMultiplicity() ;
679 Float_t * Energies = RecPoint->GetEnergiesList() ;
685 for(iparam = 0 ; iparam < nPar ; iparam++)
686 Grad[iparam] = 0 ; // Will evaluate gradient
690 AliEMCALDigit * digit ;
693 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
695 digit = dynamic_cast<AliEMCALDigit*>( digits->At( Digits[iDigit] ) );
699 Double_t yDigit=0 ;//not used yet, assumed to be 0
701 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
703 if(iflag == 2){ // calculate gradient
706 while(iParam < nPar ){
707 Double_t dx = (xDigit - x[iParam]) ;
709 Double_t dz = (zDigit - x[iParam]) ;
711 efit += x[iParam] * ShowerShape(dx,dz) ;
714 Double_t sum = 2. * (efit - Energies[iDigit]) / Energies[iDigit] ; // Here we assume, that sigma = sqrt(E)
716 while(iParam < nPar ){
717 Double_t xpar = x[iParam] ;
718 Double_t zpar = x[iParam+1] ;
719 Double_t epar = x[iParam+2] ;
720 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
721 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
722 Double_t r133 = TMath::Power(dr, 1.33);
723 Double_t r669 = TMath::Power(dr,6.69);
724 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
725 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
727 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
729 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
731 Grad[iParam] += shape ; // Derivative over energy
739 while(iparam < nPar ){
740 Double_t xpar = x[iparam] ;
741 Double_t zpar = x[iparam+1] ;
742 Double_t epar = x[iparam+2] ;
744 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
747 fret += (efit-Energies[iDigit])*(efit-Energies[iDigit])/Energies[iDigit] ;
748 // Here we assume, that sigma = sqrt(E)
751 //____________________________________________________________________________
752 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
754 // Print clusterizer parameters
756 TString message("\n") ;
758 if( strcmp(GetName(), "") !=0 ){
762 TString taskName(Version()) ;
764 printf("--------------- ");
765 printf(taskName.Data()) ;
767 printf("Clusterizing digits: ");
768 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
769 printf("\n ECA Logarithmic weight = %f", fECAW0);
771 printf("\nUnfolding on\n");
773 printf("\nUnfolding off\n");
775 printf("------------------------------------------------------------------");
778 printf("AliEMCALClusterizerv1 not initialized ") ;
781 //____________________________________________________________________________
782 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
784 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
785 if(strstr(option,"deb")) {
786 printf("PrintRecPoints: Clusterization result:") ;
788 printf(" Found %d ECA Rec Points\n ",
789 fRecPoints->GetEntriesFast()) ;
792 if(strstr(option,"all")) {
793 if(strstr(option,"deb")) {
794 printf("\n-----------------------------------------------------------------------\n") ;
795 printf("Clusters in ECAL section\n") ;
796 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
800 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
801 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
803 //rp->GetGlobalPosition(globalpos);
805 rp->GetLocalPosition(localpos);
807 rp->GetElipsAxis(lambda);
810 primaries = rp->GetPrimaries(nprimaries);
811 if(strstr(option,"deb"))
812 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
813 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
814 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
815 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
816 if(strstr(option,"deb")){
817 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
818 printf("%d ", primaries[iprimary] ) ;
823 if(strstr(option,"deb"))
824 printf("\n-----------------------------------------------------------------------\n");
828 //___________________________________________________________________
829 void AliEMCALClusterizerv1::PrintRecoInfo()
831 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );