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"
77 //#include "AliEMCALHistoUtilities.h"
78 #include "AliEMCALRecParam.h"
79 #include "AliEMCALReconstructor.h"
80 #include "AliCDBManager.h"
83 #include "AliCDBEntry.h"
85 ClassImp(AliEMCALClusterizerv1)
87 //____________________________________________________________________________
88 AliEMCALClusterizerv1::AliEMCALClusterizerv1()
89 : AliEMCALClusterizer(),
91 //fHists(0),fPointE(0),fPointL1(0),fPointL2(0),
92 //fPointDis(0),fPointMult(0),fDigitAmp(0),fMaxE(0),
93 //fMaxL1(0),fMaxL2(0),fMaxDis(0),
97 fNumberOfECAClusters(0),fCalibData(0),
98 fADCchannelECA(0.),fADCpedestalECA(0.),fECAClusteringThreshold(0.),fECALocMaxCut(0.),
99 fECAW0(0.),fTimeCut(0.),fMinECut(0.)
101 // ctor with the indication of the file where header Tree and digits Tree are stored
107 //____________________________________________________________________________
108 AliEMCALClusterizerv1::~AliEMCALClusterizerv1()
113 //____________________________________________________________________________
114 Float_t AliEMCALClusterizerv1::Calibrate(Int_t amp, Int_t AbsId)
117 // Convert digitized amplitude into energy.
118 // Calibration parameters are taken from calibration data base for raw data,
119 // or from digitizer parameters for simulated data.
124 AliFatal("Did not get geometry from EMCALLoader") ;
133 Bool_t bCell = fGeom->GetCellIndex(AbsId, iSupMod, nModule, nIphi, nIeta) ;
135 fGeom->PrintGeometry();
136 Error("Calibrate()"," Wrong cell id number : %i", AbsId);
140 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,nModule,nIphi, nIeta,iphi,ieta);
142 fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi);
143 fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
145 return -fADCpedestalECA + amp * fADCchannelECA ;
148 else //Return energy with default parameters if calibration is not available
149 return -fADCpedestalECA + amp * fADCchannelECA ;
153 //____________________________________________________________________________
154 void AliEMCALClusterizerv1::Digits2Clusters(Option_t * option)
156 // Steering method to perform clusterization for the current event
159 if(strstr(option,"tim"))
160 gBenchmark->Start("EMCALClusterizer");
162 if(strstr(option,"print"))
165 //Get calibration parameters from file or digitizer default values.
166 GetCalibrationParameters() ;
169 fNumberOfECAClusters = 0;
171 MakeClusters() ; //only the real clusters
178 //Evaluate position, dispersion and other RecPoint properties for EC section
179 for(index = 0; index < fRecPoints->GetEntries(); index++) {
180 dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index))->EvalAll(fECAW0,fDigitsArr) ;
185 for(index = 0; index < fRecPoints->GetEntries(); index++) {
186 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->SetIndexInList(index) ;
187 (dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(index)))->Print();
192 if(strstr(option,"deb") || strstr(option,"all"))
193 PrintRecPoints(option) ;
195 AliDebug(1,Form("EMCAL Clusterizer found %d Rec Points",fRecPoints->GetEntriesFast()));
197 if(strstr(option,"tim")){
198 gBenchmark->Stop("EMCALClusterizer");
199 printf("Exec took %f seconds for Clusterizing",
200 gBenchmark->GetCpuTime("EMCALClusterizer"));
204 //____________________________________________________________________________
205 Bool_t AliEMCALClusterizerv1::FindFit(AliEMCALRecPoint * RecPoint, AliEMCALDigit ** maxAt,
206 Float_t* maxAtEnergy,
207 Int_t nPar, Float_t * fitparameters) const
209 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
210 // The initial values for fitting procedure are set equal to the
211 // positions of local maxima.
212 // Cluster will be fitted as a superposition of nPar/3
213 // electromagnetic showers
215 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
217 gMinuit->mncler(); // Reset Minuit's list of paramters
218 gMinuit->SetPrintLevel(-1) ; // No Printout
219 gMinuit->SetFCN(AliEMCALClusterizerv1::UnfoldingChiSquare) ;
220 // To set the address of the minimization function
221 TList * toMinuit = new TList();
222 toMinuit->AddAt(RecPoint,0) ;
223 toMinuit->AddAt(fDigitsArr,1) ;
224 toMinuit->AddAt(fGeom,2) ;
226 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
228 // filling initial values for fit parameters
229 AliEMCALDigit * digit ;
233 Int_t nDigits = (Int_t) nPar / 3 ;
237 for(iDigit = 0; iDigit < nDigits; iDigit++){
238 digit = maxAt[iDigit];
243 fGeom->RelPosCellInSModule(digit->GetId(), y, x, z);
245 Float_t energy = maxAtEnergy[iDigit] ;
247 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
250 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %f", x ) ;
253 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
256 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %f", z) ;
259 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
262 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
267 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
268 // The number of function call slightly depends on it.
269 //Double_t p1 = 1.0 ;
272 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
273 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
274 gMinuit->SetMaxIterations(5);
275 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
276 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
278 if(ierflg == 4){ // Minimum not found
279 Error("FindFit", "EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
282 for(index = 0; index < nPar; index++){
285 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
286 fitparameters[index] = val ;
294 //____________________________________________________________________________
295 void AliEMCALClusterizerv1::GetCalibrationParameters()
297 // Set calibration parameters:
298 // if calibration database exists, they are read from database,
299 // otherwise, they are taken from digitizer.
301 // It is a user responsilibity to open CDB before reconstruction,
303 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
305 //Check if calibration is stored in data base
307 if(!fCalibData && (AliCDBManager::Instance()->IsDefaultStorageSet()))
309 AliCDBEntry *entry = (AliCDBEntry*)
310 AliCDBManager::Instance()->Get("EMCAL/Calib/Data");
311 if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject();
315 AliFatal("Calibration parameters not found in CDB!");
319 //____________________________________________________________________________
320 void AliEMCALClusterizerv1::Init()
322 // Make all memory allocations which can not be done in default constructor.
323 // Attach the Clusterizer task to the list of EMCAL tasks
325 AliRunLoader *rl = AliRunLoader::GetRunLoader();
326 if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL"))
327 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
329 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
331 AliDebug(1,Form("geom 0x%x",fGeom));
334 gMinuit = new TMinuit(100) ;
337 //fHists = BookHists();
340 //____________________________________________________________________________
341 void AliEMCALClusterizerv1::InitParameters()
343 // Initializes the parameters for the Clusterizer
344 fNumberOfECAClusters = 0;
345 fTimeCut = 300e-9 ; // 300 ns time cut (to be tuned)
349 const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
351 AliFatal("Reconstruction parameters for EMCAL not set!");
354 fECAClusteringThreshold = recParam->GetClusteringThreshold();
355 fECAW0 = recParam->GetW0();
356 fMinECut = recParam->GetMinECut();
357 fToUnfold = recParam->GetUnfold();
358 if(fToUnfold) AliWarning("Cluster Unfolding ON. Implementing only for eta=0 case!!!");
359 fECALocMaxCut = recParam->GetLocMaxCut();
361 AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f, fECAW=%.3f, fMinECut=%.3f, fToUnfold=%d, fECALocMaxCut=%.3f",
362 fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut));
367 //____________________________________________________________________________
368 Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2) const
370 // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
372 // = 2 is in different SM; continue searching
373 // neighbours are defined as digits having at least a common vertex
374 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
375 // which is compared to a digit (d2) not yet in a cluster
378 static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
379 static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
380 static Int_t rowdiff, coldiff;
383 fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
384 fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
385 if(nSupMod1 != nSupMod2) return 2; // different SM
387 fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
388 fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
390 rowdiff = TMath::Abs(iphi1 - iphi2);
391 coldiff = TMath::Abs(ieta1 - ieta2) ;
393 // neighbours with at least commom side; May 11, 2007
394 if ((coldiff==0 && abs(rowdiff)==1) || (rowdiff==0 && abs(coldiff)==1)) rv = 1;
396 if (gDebug == 2 && rv==1)
397 printf("AreNeighbours: neighbours=%d, id1=%d, relid1=%d,%d \n id2=%d, relid2=%d,%d \n",
398 rv, d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2);
403 //____________________________________________________________________________
404 void AliEMCALClusterizerv1::MakeClusters()
406 // Steering method to construct the clusters stored in a list of Reconstructed Points
407 // A cluster is defined as a list of neighbour digits
408 // Mar 03, 2007 by PAI
410 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
414 // Set up TObjArray with pointers to digits to work on
415 TObjArray *digitsC = new TObjArray();
416 TIter nextdigit(fDigitsArr);
417 AliEMCALDigit *digit;
418 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextdigit())) ) {
419 digitsC->AddLast(digit);
422 double e = 0.0, ehs = 0.0;
423 TIter nextdigitC(digitsC);
425 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // clean up digits
426 e = Calibrate(digit->GetAmp(), digit->GetId());
428 //AliEMCALHistoUtilities::FillH1(fHists, 10, digit->GetAmp());
429 //AliEMCALHistoUtilities::FillH1(fHists, 11, e);
430 if ( e < fMinECut || digit->GetTimeR() > fTimeCut )
431 digitsC->Remove(digit);
435 AliDebug(1,Form("MakeClusters: Number of digits %d -> (e %f), ehs %d\n",
436 fDigitsArr->GetEntries(),fMinECut,ehs));
440 while ( (digit = dynamic_cast<AliEMCALDigit *>(nextdigitC())) ) { // scan over the list of digitsC
441 TArrayI clusterECAdigitslist(fDigitsArr->GetEntries());
443 if(fGeom->CheckAbsCellId(digit->GetId()) && (Calibrate(digit->GetAmp(), digit->GetId()) > fECAClusteringThreshold ) ){
444 // start a new Tower RecPoint
445 if(fNumberOfECAClusters >= fRecPoints->GetSize()) fRecPoints->Expand(2*fNumberOfECAClusters+1) ;
446 AliEMCALRecPoint *recPoint = new AliEMCALRecPoint("") ;
447 fRecPoints->AddAt(recPoint, fNumberOfECAClusters) ;
448 recPoint = dynamic_cast<AliEMCALRecPoint *>(fRecPoints->At(fNumberOfECAClusters)) ;
449 fNumberOfECAClusters++ ;
451 recPoint->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
453 recPoint->AddDigit(*digit, Calibrate(digit->GetAmp(), digit->GetId())) ;
454 TObjArray clusterDigits;
455 clusterDigits.AddLast(digit);
456 digitsC->Remove(digit) ;
458 AliDebug(1,Form("MakeClusters: OK id = %d, ene = %f , cell.th. = %f \n", digit->GetId(),
459 Calibrate(digit->GetAmp(),digit->GetId()), fECAClusteringThreshold));
461 // Grow cluster by finding neighbours
462 TIter nextClusterDigit(&clusterDigits);
463 while ( (digit = dynamic_cast<AliEMCALDigit*>(nextClusterDigit())) ) { // scan over digits in cluster
464 TIter nextdigitN(digitsC);
465 AliEMCALDigit *digitN = 0; // digi neighbor
466 while ( (digitN = (AliEMCALDigit *)nextdigitN()) ) { // scan over all digits to look for neighbours
467 if (AreNeighbours(digit, digitN)==1) { // call (digit,digitN) in THAT oder !!!!!
468 recPoint->AddDigit(*digitN, Calibrate(digitN->GetAmp(),digitN->GetId()) ) ;
469 clusterDigits.AddLast(digitN) ;
470 digitsC->Remove(digitN) ;
472 } // scan over digits
473 } // scan over digits already in cluster
475 AliDebug(2,Form("MakeClusters: %d digitd, energy %f \n", clusterDigits.GetEntries(), recPoint->GetEnergy()));
481 AliDebug(1,Form("total no of clusters %d from %d digits",fNumberOfECAClusters,fDigitsArr->GetEntriesFast()));
484 //____________________________________________________________________________
485 void AliEMCALClusterizerv1::MakeUnfolding()
487 // Unfolds clusters using the shape of an ElectroMagnetic shower
488 // Performs unfolding of all clusters
490 if(fNumberOfECAClusters > 0){
492 AliFatal("Did not get geometry from EMCALLoader") ;
493 Int_t nModulesToUnfold = fGeom->GetNCells();
495 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
497 for(index = 0 ; index < numberofNotUnfolded ; index++){
499 AliEMCALRecPoint * RecPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
503 RecPoint->GetGlobalPosition(gpos);
504 fGeom->GetAbsCellIdFromEtaPhi(gpos.Eta(),gpos.Phi(),absId);
505 if(absId > nModulesToUnfold)
508 Int_t nMultipl = RecPoint->GetMultiplicity() ;
509 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
510 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
511 Int_t nMax = RecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
513 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
514 UnfoldCluster(RecPoint, nMax, maxAt, maxAtEnergy) ;
515 fRecPoints->Remove(RecPoint);
516 fRecPoints->Compress() ;
518 fNumberOfECAClusters-- ;
519 numberofNotUnfolded-- ;
522 RecPoint->SetNExMax(1) ; //Only one local maximum
526 delete[] maxAtEnergy ;
529 // End of Unfolding of clusters
532 //____________________________________________________________________________
533 Double_t AliEMCALClusterizerv1::ShowerShape(Double_t x, Double_t y)
535 // Shape of the shower
536 // If you change this function, change also the gradient evaluation in ChiSquare()
538 Double_t r = sqrt(x*x+y*y);
539 Double_t r133 = TMath::Power(r, 1.33) ;
540 Double_t r669 = TMath::Power(r, 6.69) ;
541 Double_t shape = TMath::Exp( -r133 * (1. / (1.57 + 0.0860 * r133) - 0.55 / (1 + 0.000563 * r669) ) ) ;
545 //____________________________________________________________________________
546 void AliEMCALClusterizerv1::UnfoldCluster(AliEMCALRecPoint * iniTower,
548 AliEMCALDigit ** maxAt,
549 Float_t * maxAtEnergy)
551 // Performs the unfolding of a cluster with nMax overlapping showers
552 Int_t nPar = 3 * nMax ;
553 Float_t * fitparameters = new Float_t[nPar] ;
556 AliFatal("Did not get geometry from EMCALLoader") ;
558 Bool_t rv = FindFit(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
560 // Fit failed, return and remove cluster
561 iniTower->SetNExMax(-1) ;
562 delete[] fitparameters ;
566 // create unfolded rec points and fill them with new energy lists
567 // First calculate energy deposited in each sell in accordance with
568 // fit (without fluctuations): efit[]
569 // and later correct this number in acordance with actual energy
572 Int_t nDigits = iniTower->GetMultiplicity() ;
573 Float_t * efit = new Float_t[nDigits] ;
574 Double_t xDigit=0.,yDigit=0.,zDigit=0. ;
575 Float_t xpar=0.,zpar=0.,epar=0. ;
577 AliEMCALDigit * digit = 0 ;
578 Int_t * Digits = iniTower->GetDigitsList() ;
582 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
583 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(Digits[iDigit] ) ) ;
584 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
588 while(iparam < nPar ){
589 xpar = fitparameters[iparam] ;
590 zpar = fitparameters[iparam+1] ;
591 epar = fitparameters[iparam+2] ;
593 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
598 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
599 // so that energy deposited in each cell is distributed between new clusters proportionally
600 // to its contribution to efit
602 Float_t * Energies = iniTower->GetEnergiesList() ;
606 while(iparam < nPar ){
607 xpar = fitparameters[iparam] ;
608 zpar = fitparameters[iparam+1] ;
609 epar = fitparameters[iparam+2] ;
612 AliEMCALRecPoint * RecPoint = 0 ;
614 if(fNumberOfECAClusters >= fRecPoints->GetSize())
615 fRecPoints->Expand(2*fNumberOfECAClusters) ;
617 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
618 RecPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
619 fNumberOfECAClusters++ ;
620 RecPoint->SetNExMax((Int_t)nPar/3) ;
623 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
624 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( Digits[iDigit] ) ) ;
625 fGeom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
627 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
628 eDigit = Energies[iDigit] * ratio ;
629 RecPoint->AddDigit( *digit, eDigit ) ;
633 delete[] fitparameters ;
638 //_____________________________________________________________________________
639 void AliEMCALClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad,
641 Double_t * x, Int_t iflag)
643 // Calculates the Chi square for the cluster unfolding minimization
644 // Number of parameters, Gradient, Chi squared, parameters, what to do
646 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
648 AliEMCALRecPoint * RecPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
649 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
650 // A bit buggy way to get an access to the geometry
652 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
654 Int_t * Digits = RecPoint->GetDigitsList() ;
656 Int_t nOdigits = RecPoint->GetDigitsMultiplicity() ;
658 Float_t * Energies = RecPoint->GetEnergiesList() ;
664 for(iparam = 0 ; iparam < nPar ; iparam++)
665 Grad[iparam] = 0 ; // Will evaluate gradient
669 AliEMCALDigit * digit ;
672 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
674 digit = dynamic_cast<AliEMCALDigit*>( digits->At( Digits[iDigit] ) );
678 Double_t yDigit=0 ;//not used yet, assumed to be 0
680 geom->RelPosCellInSModule(digit->GetId(), yDigit, xDigit, zDigit);
682 if(iflag == 2){ // calculate gradient
685 while(iParam < nPar ){
686 Double_t dx = (xDigit - x[iParam]) ;
688 Double_t dz = (zDigit - x[iParam]) ;
690 efit += x[iParam] * ShowerShape(dx,dz) ;
693 Double_t sum = 2. * (efit - Energies[iDigit]) / Energies[iDigit] ; // Here we assume, that sigma = sqrt(E)
695 while(iParam < nPar ){
696 Double_t xpar = x[iParam] ;
697 Double_t zpar = x[iParam+1] ;
698 Double_t epar = x[iParam+2] ;
699 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
700 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
701 Double_t r133 = TMath::Power(dr, 1.33);
702 Double_t r669 = TMath::Power(dr,6.69);
703 Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
704 - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
706 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
708 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
710 Grad[iParam] += shape ; // Derivative over energy
718 while(iparam < nPar ){
719 Double_t xpar = x[iparam] ;
720 Double_t zpar = x[iparam+1] ;
721 Double_t epar = x[iparam+2] ;
723 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
726 fret += (efit-Energies[iDigit])*(efit-Energies[iDigit])/Energies[iDigit] ;
727 // Here we assume, that sigma = sqrt(E)
730 //____________________________________________________________________________
731 void AliEMCALClusterizerv1::Print(Option_t * /*option*/)const
733 // Print clusterizer parameters
735 TString message("\n") ;
737 if( strcmp(GetName(), "") !=0 ){
741 TString taskName(Version()) ;
743 printf("--------------- ");
744 printf(taskName.Data()) ;
746 printf("Clusterizing digits: ");
747 printf("\n ECA Local Maximum cut = %f", fECALocMaxCut);
748 printf("\n ECA Logarithmic weight = %f", fECAW0);
750 printf("\nUnfolding on\n");
752 printf("\nUnfolding off\n");
754 printf("------------------------------------------------------------------");
757 printf("AliEMCALClusterizerv1 not initialized ") ;
760 //____________________________________________________________________________
761 void AliEMCALClusterizerv1::PrintRecPoints(Option_t * option)
763 // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer
764 if(strstr(option,"deb")) {
765 printf("PrintRecPoints: Clusterization result:") ;
767 printf(" Found %d ECA Rec Points\n ",
768 fRecPoints->GetEntriesFast()) ;
771 if(strstr(option,"all")) {
772 if(strstr(option,"deb")) {
773 printf("\n-----------------------------------------------------------------------\n") ;
774 printf("Clusters in ECAL section\n") ;
775 printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ;
784 //AliEMCALHistoUtilities::FillH1(fHists, 12, double(fRecPoints->GetEntries()));
786 for (index = 0 ; index < fRecPoints->GetEntries() ; index++) {
787 AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ;
789 //rp->GetGlobalPosition(globalpos);
791 rp->GetLocalPosition(localpos);
793 rp->GetElipsAxis(lambda);
796 primaries = rp->GetPrimaries(nprimaries);
797 if(strstr(option,"deb"))
798 printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ",
799 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(),
800 globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(),
801 rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ;
803 if(rp->GetEnergy()>maxE){
804 maxE=rp->GetEnergy();
807 maxDis=rp->GetDispersion();
810 //fPointE->Fill(rp->GetEnergy());
811 //fPointL1->Fill(lambda[0]);
812 //fPointL2->Fill(lambda[1]);
813 //fPointDis->Fill(rp->GetDispersion());
814 //fPointMult->Fill(rp->GetMultiplicity());
816 if(strstr(option,"deb")){
817 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
818 printf("%d ", primaries[iprimary] ) ;
824 // fMaxE->Fill(maxE);
825 // fMaxL1->Fill(maxL1);
826 // fMaxL2->Fill(maxL2);
827 // fMaxDis->Fill(maxDis);
829 if(strstr(option,"deb"))
830 printf("\n-----------------------------------------------------------------------\n");
835 TList* AliEMCALClusterizerv1::BookHists()
837 //set up histograms for monitoring clusterizer performance
841 fPointE = new TH1F("00_pointE","point energy", 2000, 0.0, 150.);
842 fPointL1 = new TH1F("01_pointL1","point L1", 1000, 0.0, 3.);
843 fPointL2 = new TH1F("02_pointL2","point L2", 1000, 0.0, 3.);
844 fPointDis = new TH1F("03_pointDisp","point dispersion", 1000, 0.0, 10.);
845 fPointMult = new TH1F("04_pointMult","#cell in point(cluster)", 101, -0.5, 100.5);
846 fDigitAmp = new TH1F("05_digitAmp","Digit Amplitude", 2000, 0.0, 5000.);
847 fMaxE = new TH1F("06_maxE","Max point energy", 2000, 0.0, 150.);
848 fMaxL1 = new TH1F("07_maxL1","Largest (first) of eigenvalue of covariance matrix", 1000, 0.0, 3.);
849 fMaxL2 = new TH1F("08_maxL2","Smalest (second) of eigenvalue of covariace matrix", 1000, 0.0, 3.);
850 fMaxDis = new TH1F("09_maxDis","Point dispersion", 1000, 0.0, 10.); // 9
852 new TH1F("10_adcOfDigits","adc of digits(threshold control)", 1001, -0.5, 1000.5); // 10
853 new TH1F("11_energyOfDigits","energy of digits(threshold control)", 1000, 0.0, 1.); // 11
854 new TH1F("12_numberOfPoints","number of points(clusters)", 101, -0.5, 100.5); // 12
856 return AliEMCALHistoUtilities::MoveHistsToList("EmcalClusterizerv1ControlHists", kFALSE);
859 void AliEMCALClusterizerv1::SaveHists(const char *fn)
861 AliEMCALHistoUtilities::SaveListOfHists(fHists, fn, kTRUE);
865 //___________________________________________________________________
866 void AliEMCALClusterizerv1::PrintRecoInfo()
868 printf(" AliEMCALClusterizerv1::PrintRecoInfo() : version %s \n", Version() );
870 //TH1F *h = (TH1F*)fHists->At(12);
872 // printf(" ## Multiplicity of RecPoints ## \n");
873 // for(int i=1; i<=h->GetNbinsX(); i++) {
874 // int nbin = int((*h)[i]);
875 // int mult = int(h->GetBinCenter(i));
876 // if(nbin > 0) printf(" %i : %5.5i %6.3f %% \n", mult, nbin, 100.*nbin/h->GetEntries());
883 //___________________________________________________________________
884 void AliEMCALClusterizerv1::DrawLambdasHists()
888 if(fMaxL2) fMaxL2->Draw("same");
890 fMaxDis->Draw("same");