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 *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 /* History of cvs commits:
20 * $Log: AliPHOSClusterizerv1.cxx,v $
21 * Revision 1.118 2007/12/11 21:23:26 kharlov
22 * Added possibility to swith off unfolding
24 * Revision 1.117 2007/10/18 08:42:05 kharlov
25 * Bad channels cleaned before clusterization
27 * Revision 1.116 2007/10/01 20:24:08 kharlov
30 * Revision 1.115 2007/09/26 14:22:17 cvetan
31 * Important changes to the reconstructor classes. Complete elimination of the run-loaders, which are now steered only from AliReconstruction. Removal of the corresponding Reconstruct() and FillESD() methods.
33 * Revision 1.114 2007/09/06 16:06:44 kharlov
34 * Absence of sorting results in loose of all unfolded clusters
36 * Revision 1.113 2007/08/28 12:55:07 policheh
37 * Loaders removed from the reconstruction code (C.Cheshkov)
39 * Revision 1.112 2007/08/22 09:20:50 hristov
40 * Updated QA classes (Yves)
42 * Revision 1.111 2007/08/08 12:11:28 kharlov
43 * Protection against uninitialized fQADM
45 * Revision 1.110 2007/08/07 14:16:00 kharlov
46 * Quality assurance added (Yves Schutz)
48 * Revision 1.109 2007/07/24 17:20:35 policheh
49 * Usage of RecoParam objects instead of hardcoded parameters in reconstruction.
50 * (See $ALICE_ROOT/PHOS/macros/BeamTest2006/RawReconstruction.C).
52 * Revision 1.108 2007/06/18 07:00:51 kharlov
53 * Bug fix for attempt to use AliPHOSEmcRecPoint after its deletion
55 * Revision 1.107 2007/05/25 14:12:26 policheh
56 * Local to tracking CS transformation added for CPV rec. points
58 * Revision 1.106 2007/05/24 13:01:22 policheh
59 * Local to tracking CS transformation invoked for each EMC rec.point
61 * Revision 1.105 2007/05/02 13:41:22 kharlov
62 * Mode protection against absence of calib.data from AliPHOSCalibData to AliPHOSClusterizerv1::GetCalibrationParameters()
64 * Revision 1.104 2007/04/27 16:55:53 kharlov
65 * Calibration stops if PHOS CDB objects do not exist
67 * Revision 1.103 2007/04/11 11:55:45 policheh
68 * SetDistancesToBadChannels() added.
70 * Revision 1.102 2007/03/28 19:18:15 kharlov
71 * RecPoints recalculation in TSM removed
73 * Revision 1.101 2007/03/06 06:51:27 kharlov
74 * Calculation of cluster properties dep. on vertex posponed to TrackSegmentMaker
76 * Revision 1.100 2007/01/10 11:07:26 kharlov
77 * Raw digits writing to file (B.Polichtchouk)
79 * Revision 1.99 2006/11/07 16:49:51 kharlov
80 * Corrections for next event switch in case of raw data (B.Polichtchouk)
82 * Revision 1.98 2006/10/27 17:14:27 kharlov
83 * Introduce AliDebug and AliLog (B.Polichtchouk)
85 * Revision 1.97 2006/08/29 11:41:19 kharlov
86 * Missing implementation of ctors and = operator are added
88 * Revision 1.96 2006/08/25 16:56:30 kharlov
89 * Compliance with Effective C++
91 * Revision 1.95 2006/08/11 12:36:26 cvetan
92 * Update of the PHOS code needed in order to read and reconstruct the beam test raw data (i.e. without an existing galice.root)
94 * Revision 1.94 2006/08/07 12:27:49 hristov
95 * Removing obsolete code which affected the event numbering scheme
97 * Revision 1.93 2006/08/01 12:20:17 cvetan
98 * 1. Adding a possibility to read and reconstruct an old rcu formatted raw data. This is controlled by an option of AliReconstruction and AliPHOSReconstructor. 2. In case of raw data processing (without galice.root) create the default AliPHOSGeometry object. Most likely this should be moved to the CDB
100 * Revision 1.92 2006/04/29 20:26:46 hristov
101 * Separate EMC and CPV calibration (Yu.Kharlov)
103 * Revision 1.91 2006/04/22 10:30:17 hristov
104 * Add fEnergy to AliPHOSDigit and operate with EMC amplitude in energy units (Yu.Kharlov)
106 * Revision 1.90 2006/04/11 15:22:59 hristov
107 * run number in query set to -1: forces AliCDBManager to use its run number (A.Colla)
109 * Revision 1.89 2006/03/13 14:05:42 kharlov
110 * Calibration objects for EMC and CPV
112 * Revision 1.88 2006/01/11 08:54:52 hristov
113 * Additional protection in case no calibration entry was found
115 * Revision 1.87 2005/11/22 08:46:43 kharlov
116 * Updated to new CDB (Boris Polichtchouk)
118 * Revision 1.86 2005/11/14 21:52:43 hristov
121 * Revision 1.85 2005/09/27 16:08:08 hristov
122 * New version of CDB storage framework (A.Colla)
124 * Revision 1.84 2005/09/21 10:02:47 kharlov
125 * Reading calibration from CDB (Boris Polichtchouk)
127 * Revision 1.82 2005/09/02 15:43:13 kharlov
128 * Add comments in GetCalibrationParameters and Calibrate
130 * Revision 1.81 2005/09/02 14:32:07 kharlov
131 * Calibration of raw data
133 * Revision 1.80 2005/08/24 15:31:36 kharlov
134 * Setting raw digits flag
136 * Revision 1.79 2005/07/25 15:53:53 kharlov
139 * Revision 1.78 2005/05/28 14:19:04 schutz
140 * Compilation warnings fixed by T.P.
144 //*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (SUBATECH & Kurchatov Institute)
145 //////////////////////////////////////////////////////////////////////////////
146 // Clusterization class. Performs clusterization (collects neighbouring active cells) and
147 // unfolds the clusters having several local maxima.
148 // Results are stored in TreeR#, branches PHOSEmcRP (EMC recPoints),
149 // PHOSCpvRP (CPV RecPoints) and AliPHOSClusterizer (Clusterizer with all
150 // parameters including input digits branch title, thresholds etc.)
151 // This TTask is normally called from Reconstructioner, but can as well be used in
154 // root [0] AliPHOSClusterizerv1 * cl = new AliPHOSClusterizerv1(<pointer_to_phos_geometry_onject>)
155 // root [1] cl->Digits2Clusters(digitsTree,clusterTree)
156 // //finds RecPoints in the current event
157 // root [2] cl->SetDigitsBranch("digits2")
158 // //sets another title for Digitis (input) branch
159 // root [3] cl->SetRecPointsBranch("recp2")
160 // //sets another title four output branches
161 // root [4] cl->SetEmcLocalMaxCut(0.03)
162 // //set clusterization parameters
164 // --- ROOT system ---
169 #include "TBenchmark.h"
170 #include "TClonesArray.h"
172 // --- Standard library ---
174 // --- AliRoot header files ---
176 #include "AliConfig.h"
177 #include "AliPHOSGeometry.h"
178 #include "AliPHOSClusterizerv1.h"
179 #include "AliPHOSEmcRecPoint.h"
180 #include "AliPHOSCpvRecPoint.h"
181 #include "AliPHOSDigit.h"
182 #include "AliPHOSDigitizer.h"
183 #include "AliPHOSCalibrationDB.h"
184 #include "AliCDBManager.h"
185 #include "AliCDBStorage.h"
186 #include "AliCDBEntry.h"
187 #include "AliPHOSRecoParam.h"
188 #include "AliPHOSReconstructor.h"
189 #include "AliPHOSCalibData.h"
191 ClassImp(AliPHOSClusterizerv1)
193 //____________________________________________________________________________
194 AliPHOSClusterizerv1::AliPHOSClusterizerv1() :
195 AliPHOSClusterizer(),
196 fDefaultInit(0), fEmcCrystals(0), fToUnfold(0),
197 fWrite(0), fNumberOfEmcClusters(0), fNumberOfCpvClusters(0),
198 fEmcClusteringThreshold(0), fCpvClusteringThreshold(0),
199 fEmcLocMaxCut(0), fW0(0), fCpvLocMaxCut(0),
200 fW0CPV(0), fEmcTimeGate(0)
202 // default ctor (to be used mainly by Streamer)
205 fDefaultInit = kTRUE ;
208 //____________________________________________________________________________
209 AliPHOSClusterizerv1::AliPHOSClusterizerv1(AliPHOSGeometry *geom) :
210 AliPHOSClusterizer(geom),
211 fDefaultInit(0), fEmcCrystals(0), fToUnfold(0),
212 fWrite(0), fNumberOfEmcClusters(0), fNumberOfCpvClusters(0),
213 fEmcClusteringThreshold(0), fCpvClusteringThreshold(0),
214 fEmcLocMaxCut(0), fW0(0), fCpvLocMaxCut(0),
215 fW0CPV(0), fEmcTimeGate(0)
217 // ctor with the indication of the file where header Tree and digits Tree are stored
221 fDefaultInit = kFALSE ;
224 //____________________________________________________________________________
225 AliPHOSClusterizerv1::~AliPHOSClusterizerv1()
230 //____________________________________________________________________________
231 void AliPHOSClusterizerv1::Digits2Clusters(Option_t *option)
233 // Steering method to perform clusterization for one event
234 // The input is the tree with digits.
235 // The output is the tree with clusters.
237 if(strstr(option,"tim"))
238 gBenchmark->Start("PHOSClusterizer");
240 if(strstr(option,"print")) {
247 AliDebug(2,Form(" ---- Printing clusters (%d)\n",
248 fEMCRecPoints->GetEntries()));
249 if(AliLog::GetGlobalDebugLevel()>1)
250 fEMCRecPoints->Print();
257 if(strstr(option,"deb"))
258 PrintRecPoints(option) ;
260 if(strstr(option,"tim")){
261 gBenchmark->Stop("PHOSClusterizer");
262 AliInfo(Form("took %f seconds for Clusterizing\n",
263 gBenchmark->GetCpuTime("PHOSClusterizer")));
267 //____________________________________________________________________________
268 Bool_t AliPHOSClusterizerv1::FindFit(AliPHOSEmcRecPoint * emcRP, AliPHOSDigit ** maxAt, Float_t * maxAtEnergy,
269 Int_t nPar, Float_t * fitparameters) const
271 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
272 // The initial values for fitting procedure are set equal to the positions of local maxima.
273 // Cluster will be fitted as a superposition of nPar/3 electromagnetic showers
276 gMinuit->mncler(); // Reset Minuit's list of paramters
277 gMinuit->SetPrintLevel(-1) ; // No Printout
278 gMinuit->SetFCN(AliPHOSClusterizerv1::UnfoldingChiSquare) ;
279 // To set the address of the minimization function
281 TList * toMinuit = new TList();
282 toMinuit->AddAt(emcRP,0) ;
283 toMinuit->AddAt(fDigitsArr,1) ;
284 toMinuit->AddAt(fGeom,2) ;
286 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
288 // filling initial values for fit parameters
289 AliPHOSDigit * digit ;
293 Int_t nDigits = (Int_t) nPar / 3 ;
297 for(iDigit = 0; iDigit < nDigits; iDigit++){
298 digit = maxAt[iDigit];
303 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
304 fGeom->RelPosInModule(relid, x, z) ;
306 Float_t energy = maxAtEnergy[iDigit] ;
308 gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
311 Warning("FindFit", "PHOS Unfolding unable to set initial value for fit procedure : x = %f\n", x ) ;
314 gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
317 Warning("FindFit", "PHOS Unfolding unable to set initial value for fit procedure : z =%f\n", z ) ;
320 gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
323 Warning("FindFit", "PHOS Unfolding unable to set initial value for fit procedure : energy = %f\n", energy ) ;
328 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ; The number of function call slightly
333 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
334 gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
335 gMinuit->SetMaxIterations(5);
336 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
338 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
340 if(ierflg == 4){ // Minimum not found
341 Warning("FindFit", "PHOS Unfolding fit not converged, cluster abandoned\n" );
344 for(index = 0; index < nPar; index++){
347 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
348 fitparameters[index] = val ;
357 //____________________________________________________________________________
358 void AliPHOSClusterizerv1::Init()
360 // Make all memory allocations which can not be done in default constructor.
361 // Attach the Clusterizer task to the list of PHOS tasks
363 fEmcCrystals = fGeom->GetNModules() * fGeom->GetNCristalsInModule() ;
366 gMinuit = new TMinuit(100);
369 fgCalibData = new AliPHOSCalibData(-1); //use AliCDBManager's run number
370 if (fgCalibData->GetCalibDataEmc() == 0)
371 AliFatal("Calibration parameters for PHOS EMC not found. Stop reconstruction.\n");
375 //____________________________________________________________________________
376 void AliPHOSClusterizerv1::InitParameters()
379 fNumberOfCpvClusters = 0 ;
380 fNumberOfEmcClusters = 0 ;
382 const AliPHOSRecoParam* parEmc = AliPHOSReconstructor::GetRecoParamEmc();
383 if(!parEmc) AliFatal("Reconstruction parameters for EMC not set!");
385 const AliPHOSRecoParam* parCpv = AliPHOSReconstructor::GetRecoParamCpv();
386 if(!parCpv) AliFatal("Reconstruction parameters for CPV not set!");
388 fCpvClusteringThreshold = parCpv->GetClusteringThreshold();
389 fEmcClusteringThreshold = parEmc->GetClusteringThreshold();
391 fEmcLocMaxCut = parEmc->GetLocalMaxCut();
392 fCpvLocMaxCut = parCpv->GetLocalMaxCut();
394 fW0 = parEmc->GetLogWeight();
395 fW0CPV = parCpv->GetLogWeight();
397 fEmcTimeGate = 1.e-6 ;
399 fToUnfold = parEmc->ToUnfold() ;
404 //____________________________________________________________________________
405 Int_t AliPHOSClusterizerv1::AreNeighbours(AliPHOSDigit * d1, AliPHOSDigit * d2)const
407 // Gives the neighbourness of two digits = 0 are not neighbour but continue searching
409 // = 2 are not neighbour but do not continue searching
410 // neighbours are defined as digits having at least a common vertex
411 // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
412 // which is compared to a digit (d2) not yet in a cluster
417 fGeom->AbsToRelNumbering(d1->GetId(), relid1) ;
420 fGeom->AbsToRelNumbering(d2->GetId(), relid2) ;
422 if ( (relid1[0] == relid2[0]) && (relid1[1]==relid2[1]) ) { // inside the same PHOS module
423 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
424 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
426 if (( coldiff <= 1 ) && ( rowdiff <= 1 )){ //At least common vertex
427 // if (( relid1[2]==relid2[2] && coldiff <= 1 ) || ( relid1[3]==relid2[3] && rowdiff <= 1 )){ //common side
428 if((relid1[1] != 0) || (TMath::Abs(d1->GetTime() - d2->GetTime() ) < fEmcTimeGate))
432 if((relid2[2] > relid1[2]) && (relid2[3] > relid1[3]+1))
433 rv = 2; // Difference in row numbers is too large to look further
439 if( (relid1[0] < relid2[0]) || (relid1[1] != relid2[1]) )
446 //____________________________________________________________________________
447 Bool_t AliPHOSClusterizerv1::IsInEmc(AliPHOSDigit * digit) const
449 // Tells if (true) or not (false) the digit is in a PHOS-EMC module
453 Int_t nEMC = fGeom->GetNModules()*fGeom->GetNPhi()*fGeom->GetNZ();
455 if(digit->GetId() <= nEMC ) rv = kTRUE;
460 //____________________________________________________________________________
461 Bool_t AliPHOSClusterizerv1::IsInCpv(AliPHOSDigit * digit) const
463 // Tells if (true) or not (false) the digit is in a PHOS-CPV module
467 Int_t nEMC = fGeom->GetNModules()*fGeom->GetNPhi()*fGeom->GetNZ();
469 if(digit->GetId() > nEMC ) rv = kTRUE;
474 //____________________________________________________________________________
475 void AliPHOSClusterizerv1::WriteRecPoints()
478 // Creates new branches with given title
479 // fills and writes into TreeR.
482 //Evaluate position, dispersion and other RecPoint properties..
483 Int_t nEmc = fEMCRecPoints->GetEntriesFast();
484 Float_t emcMinE= AliPHOSReconstructor::GetRecoParamEmc()->GetMinE(); //Minimal digit energy
485 for(index = 0; index < nEmc; index++){
486 AliPHOSEmcRecPoint * rp =
487 dynamic_cast<AliPHOSEmcRecPoint *>( fEMCRecPoints->At(index) );
488 rp->Purify(emcMinE) ;
489 if(rp->GetMultiplicity()==0){
490 fEMCRecPoints->RemoveAt(index) ;
495 // No vertex is available now, calculate corrections in PID
496 rp->EvalAll(fW0,fDigitsArr) ;
497 TVector3 fakeVtx(0.,0.,0.) ;
498 rp->EvalAll(fW0,fakeVtx,fDigitsArr) ;
499 rp->EvalLocal2TrackingCSTransform();
501 fEMCRecPoints->Compress() ;
502 fEMCRecPoints->Sort() ;
503 // fEMCRecPoints->Expand(fEMCRecPoints->GetEntriesFast()) ;
504 for(index = 0; index < fEMCRecPoints->GetEntries(); index++){
505 dynamic_cast<AliPHOSEmcRecPoint *>( fEMCRecPoints->At(index) )->SetIndexInList(index) ;
508 //For each rec.point set the distance to the nearest bad crystal (BVP)
509 SetDistancesToBadChannels();
511 //Now the same for CPV
512 for(index = 0; index < fCPVRecPoints->GetEntries(); index++){
513 AliPHOSCpvRecPoint * rp = dynamic_cast<AliPHOSCpvRecPoint *>( fCPVRecPoints->At(index) );
514 rp->EvalAll(fW0CPV,fDigitsArr) ;
515 rp->EvalLocal2TrackingCSTransform();
517 fCPVRecPoints->Sort() ;
519 for(index = 0; index < fCPVRecPoints->GetEntries(); index++)
520 dynamic_cast<AliPHOSCpvRecPoint *>( fCPVRecPoints->At(index) )->SetIndexInList(index) ;
522 fCPVRecPoints->Expand(fCPVRecPoints->GetEntriesFast()) ;
524 if(fWrite){ //We write TreeR
529 //____________________________________________________________________________
530 void AliPHOSClusterizerv1::MakeClusters()
532 // Steering method to construct the clusters stored in a list of Reconstructed Points
533 // A cluster is defined as a list of neighbour digits
535 TClonesArray * digitsC = static_cast<TClonesArray*>( fDigitsArr->Clone() ) ;
537 // Clusterization starts
539 TIter nextdigit(digitsC) ;
540 AliPHOSDigit * digit ;
541 Bool_t notremoved = kTRUE ;
543 while ( (digit = dynamic_cast<AliPHOSDigit *>( nextdigit()) ) ) { // scan over the list of digitsC
546 AliPHOSRecPoint * clu = 0 ;
548 TArrayI clusterdigitslist(1500) ;
551 if (( IsInEmc(digit) && digit->GetEnergy() > fEmcClusteringThreshold ) ||
552 ( IsInCpv(digit) && digit->GetEnergy() > fCpvClusteringThreshold ) ) {
553 Int_t iDigitInCluster = 0 ;
555 if ( IsInEmc(digit) ) {
556 // start a new EMC RecPoint
557 if(fNumberOfEmcClusters >= fEMCRecPoints->GetSize())
558 fEMCRecPoints->Expand(2*fNumberOfEmcClusters+1) ;
560 fEMCRecPoints->AddAt(new AliPHOSEmcRecPoint(""), fNumberOfEmcClusters) ;
561 clu = dynamic_cast<AliPHOSEmcRecPoint *>( fEMCRecPoints->At(fNumberOfEmcClusters) ) ;
562 fNumberOfEmcClusters++ ;
563 clu->AddDigit(*digit, digit->GetEnergy()) ;
564 clusterdigitslist[iDigitInCluster] = digit->GetIndexInList() ;
566 digitsC->Remove(digit) ;
570 // start a new CPV cluster
571 if(fNumberOfCpvClusters >= fCPVRecPoints->GetSize())
572 fCPVRecPoints->Expand(2*fNumberOfCpvClusters+1);
574 fCPVRecPoints->AddAt(new AliPHOSCpvRecPoint(""), fNumberOfCpvClusters) ;
576 clu = dynamic_cast<AliPHOSCpvRecPoint *>( fCPVRecPoints->At(fNumberOfCpvClusters) ) ;
577 fNumberOfCpvClusters++ ;
578 clu->AddDigit(*digit, digit->GetEnergy()) ;
579 clusterdigitslist[iDigitInCluster] = digit->GetIndexInList() ;
581 digitsC->Remove(digit) ;
584 // Here we remove remaining EMC digits, which cannot make a cluster
587 while( ( digit = dynamic_cast<AliPHOSDigit *>( nextdigit() ) ) ) {
589 digitsC->Remove(digit) ;
593 notremoved = kFALSE ;
600 AliPHOSDigit * digitN ;
602 while (index < iDigitInCluster){ // scan over digits already in cluster
603 digit = dynamic_cast<AliPHOSDigit*>( fDigitsArr->At(clusterdigitslist[index]) ) ;
605 while ( (digitN = dynamic_cast<AliPHOSDigit *>( nextdigit() ) ) ) { // scan over the reduced list of digits
606 Int_t ineb = AreNeighbours(digit, digitN); // call (digit,digitN) in THAT oder !!!!!
608 case 0 : // not a neighbour
610 case 1 : // are neighbours
611 clu->AddDigit(*digitN, digitN->GetEnergy());
612 clusterdigitslist[iDigitInCluster] = digitN->GetIndexInList() ;
614 digitsC->Remove(digitN) ;
616 case 2 : // too far from each other
625 } // loop over cluster
636 //____________________________________________________________________________
637 void AliPHOSClusterizerv1::MakeUnfolding()
639 // Unfolds clusters using the shape of an ElectroMagnetic shower
640 // Performs unfolding of all EMC/CPV clusters
642 // Unfold first EMC clusters
643 if(fNumberOfEmcClusters > 0){
645 Int_t nModulesToUnfold = fGeom->GetNModules() ;
647 Int_t numberofNotUnfolded = fNumberOfEmcClusters ;
649 for(index = 0 ; index < numberofNotUnfolded ; index++){
651 AliPHOSEmcRecPoint * emcRecPoint = dynamic_cast<AliPHOSEmcRecPoint *>( fEMCRecPoints->At(index) ) ;
652 if(emcRecPoint->GetPHOSMod()> nModulesToUnfold)
655 Int_t nMultipl = emcRecPoint->GetMultiplicity() ;
656 AliPHOSDigit ** maxAt = new AliPHOSDigit*[nMultipl] ;
657 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
658 Int_t nMax = emcRecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fEmcLocMaxCut,fDigitsArr) ;
660 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
661 UnfoldCluster(emcRecPoint, nMax, maxAt, maxAtEnergy) ;
663 fEMCRecPoints->Remove(emcRecPoint);
664 fEMCRecPoints->Compress() ;
666 fNumberOfEmcClusters -- ;
667 numberofNotUnfolded-- ;
670 emcRecPoint->SetNExMax(1) ; //Only one local maximum
674 delete[] maxAtEnergy ;
677 // Unfolding of EMC clusters finished
680 // Unfold now CPV clusters
681 if(fNumberOfCpvClusters > 0){
683 Int_t nModulesToUnfold = fGeom->GetNModules() ;
685 Int_t numberofCpvNotUnfolded = fNumberOfCpvClusters ;
687 for(index = 0 ; index < numberofCpvNotUnfolded ; index++){
689 AliPHOSRecPoint * recPoint = dynamic_cast<AliPHOSRecPoint *>( fCPVRecPoints->At(index) ) ;
691 if(recPoint->GetPHOSMod()> nModulesToUnfold)
694 AliPHOSEmcRecPoint * emcRecPoint = dynamic_cast<AliPHOSEmcRecPoint*>(recPoint) ;
696 Int_t nMultipl = emcRecPoint->GetMultiplicity() ;
697 AliPHOSDigit ** maxAt = new AliPHOSDigit*[nMultipl] ;
698 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
699 Int_t nMax = emcRecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fCpvLocMaxCut,fDigitsArr) ;
701 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
702 UnfoldCluster(emcRecPoint, nMax, maxAt, maxAtEnergy) ;
703 fCPVRecPoints->Remove(emcRecPoint);
704 fCPVRecPoints->Compress() ;
706 numberofCpvNotUnfolded-- ;
707 fNumberOfCpvClusters-- ;
711 delete[] maxAtEnergy ;
714 //Unfolding of Cpv clusters finished
718 //____________________________________________________________________________
719 Double_t AliPHOSClusterizerv1::ShowerShape(Double_t x, Double_t z)
721 // Shape of the shower (see PHOS TDR)
722 // If you change this function, change also the gradient evaluation in ChiSquare()
724 //for the moment we neglect dependence on the incident angle.
726 Double_t r2 = x*x + z*z ;
727 Double_t r4 = r2*r2 ;
728 Double_t r295 = TMath::Power(r2, 2.95/2.) ;
729 Double_t shape = TMath::Exp( -r4 * (1. / (2.32 + 0.26 * r4) + 0.0316 / (1 + 0.0652 * r295) ) ) ;
733 //____________________________________________________________________________
734 void AliPHOSClusterizerv1::UnfoldCluster(AliPHOSEmcRecPoint * iniEmc,
736 AliPHOSDigit ** maxAt,
737 Float_t * maxAtEnergy)
739 // Performs the unfolding of a cluster with nMax overlapping showers
741 Int_t nPar = 3 * nMax ;
742 Float_t * fitparameters = new Float_t[nPar] ;
744 Bool_t rv = FindFit(iniEmc, maxAt, maxAtEnergy, nPar, fitparameters) ;
747 // Fit failed, return and remove cluster
748 iniEmc->SetNExMax(-1) ;
749 delete[] fitparameters ;
753 // create ufolded rec points and fill them with new energy lists
754 // First calculate energy deposited in each sell in accordance with fit (without fluctuations): efit[]
755 // and later correct this number in acordance with actual energy deposition
757 Int_t nDigits = iniEmc->GetMultiplicity() ;
758 Float_t * efit = new Float_t[nDigits] ;
759 Float_t xDigit=0.,zDigit=0. ;
760 Float_t xpar=0.,zpar=0.,epar=0. ;
762 AliPHOSDigit * digit = 0 ;
763 Int_t * emcDigits = iniEmc->GetDigitsList() ;
769 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
770 digit = dynamic_cast<AliPHOSDigit*>( fDigitsArr->At(emcDigits[iDigit] ) ) ;
771 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
772 fGeom->RelPosInModule(relid, xDigit, zDigit) ;
776 while(iparam < nPar ){
777 xpar = fitparameters[iparam] ;
778 zpar = fitparameters[iparam+1] ;
779 epar = fitparameters[iparam+2] ;
781 // fGeom->GetIncidentVector(fVtx,relid[0],xpar,zpar,vIncid) ;
782 // efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar,vIncid) ;
783 efit[iDigit] += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
787 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
788 // so that energy deposited in each cell is distributed betwin new clusters proportionally
789 // to its contribution to efit
791 Float_t * emcEnergies = iniEmc->GetEnergiesList() ;
795 while(iparam < nPar ){
796 xpar = fitparameters[iparam] ;
797 zpar = fitparameters[iparam+1] ;
798 epar = fitparameters[iparam+2] ;
800 // fGeom->GetIncidentVector(fVtx,iniEmc->GetPHOSMod(),xpar,zpar,vIncid) ;
802 AliPHOSEmcRecPoint * emcRP = 0 ;
804 if(iniEmc->IsEmc()){ //create new entries in fEMCRecPoints...
806 if(fNumberOfEmcClusters >= fEMCRecPoints->GetSize())
807 fEMCRecPoints->Expand(2*fNumberOfEmcClusters) ;
809 (*fEMCRecPoints)[fNumberOfEmcClusters] = new AliPHOSEmcRecPoint("") ;
810 emcRP = dynamic_cast<AliPHOSEmcRecPoint *>( fEMCRecPoints->At(fNumberOfEmcClusters) ) ;
811 fNumberOfEmcClusters++ ;
812 emcRP->SetNExMax((Int_t)nPar/3) ;
814 else{//create new entries in fCPVRecPoints
815 if(fNumberOfCpvClusters >= fCPVRecPoints->GetSize())
816 fCPVRecPoints->Expand(2*fNumberOfCpvClusters) ;
818 (*fCPVRecPoints)[fNumberOfCpvClusters] = new AliPHOSCpvRecPoint("") ;
819 emcRP = dynamic_cast<AliPHOSEmcRecPoint *>( fCPVRecPoints->At(fNumberOfCpvClusters) ) ;
820 fNumberOfCpvClusters++ ;
824 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
825 digit = dynamic_cast<AliPHOSDigit*>( fDigitsArr->At( emcDigits[iDigit] ) ) ;
826 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
827 fGeom->RelPosInModule(relid, xDigit, zDigit) ;
828 // ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar,vIncid) / efit[iDigit] ;
829 ratio = epar * ShowerShape(xDigit - xpar,zDigit - zpar) / efit[iDigit] ;
830 eDigit = emcEnergies[iDigit] * ratio ;
831 emcRP->AddDigit( *digit, eDigit ) ;
835 delete[] fitparameters ;
840 //_____________________________________________________________________________
841 void AliPHOSClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag)
843 // Calculates the Chi square for the cluster unfolding minimization
844 // Number of parameters, Gradient, Chi squared, parameters, what to do
846 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
848 AliPHOSEmcRecPoint * emcRP = dynamic_cast<AliPHOSEmcRecPoint*>( toMinuit->At(0) ) ;
849 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
850 // A bit buggy way to get an access to the geometry
852 AliPHOSGeometry *geom = dynamic_cast<AliPHOSGeometry *>(toMinuit->At(2));
854 // TVector3 * vtx = dynamic_cast<TVector3*>(toMinuit->At(3)) ; //Vertex position
856 // AliPHOSEmcRecPoint * emcRP = dynamic_cast<AliPHOSEmcRecPoint *>( gMinuit->GetObjectFit() ) ; // EmcRecPoint to fit
858 Int_t * emcDigits = emcRP->GetDigitsList() ;
860 Int_t nOdigits = emcRP->GetDigitsMultiplicity() ;
862 Float_t * emcEnergies = emcRP->GetEnergiesList() ;
869 for(iparam = 0 ; iparam < nPar ; iparam++)
870 Grad[iparam] = 0 ; // Will evaluate gradient
874 AliPHOSDigit * digit ;
877 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
879 digit = dynamic_cast<AliPHOSDigit*>( digits->At( emcDigits[iDigit] ) );
885 geom->AbsToRelNumbering(digit->GetId(), relid) ;
887 geom->RelPosInModule(relid, xDigit, zDigit) ;
889 if(iflag == 2){ // calculate gradient
892 while(iParam < nPar ){
893 Double_t dx = (xDigit - x[iParam]) ;
895 Double_t dz = (zDigit - x[iParam]) ;
897 // fGeom->GetIncidentVector(*vtx,emcRP->GetPHOSMod(),x[iParam-2],x[iParam-1],vInc) ;
898 // efit += x[iParam] * ShowerShape(dx,dz,vInc) ;
899 efit += x[iParam] * ShowerShape(dx,dz) ;
902 Double_t sum = 2. * (efit - emcEnergies[iDigit]) / emcEnergies[iDigit] ; // Here we assume, that sigma = sqrt(E)
904 while(iParam < nPar ){
905 Double_t xpar = x[iParam] ;
906 Double_t zpar = x[iParam+1] ;
907 Double_t epar = x[iParam+2] ;
908 // fGeom->GetIncidentVector(*vtx,emcRP->GetPHOSMod(),xpar,zpar,vInc) ;
909 Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
910 // Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar,vInc) ;
911 Double_t shape = sum * ShowerShape(xDigit - xpar,zDigit - zpar) ;
912 //DP: No incident angle dependence in gradient yet!!!!!!
913 Double_t r4 = dr*dr*dr*dr ;
914 Double_t r295 = TMath::Power(dr,2.95) ;
915 Double_t deriv =-4. * dr*dr * ( 2.32 / ( (2.32 + 0.26 * r4) * (2.32 + 0.26 * r4) ) +
916 0.0316 * (1. + 0.0171 * r295) / ( ( 1. + 0.0652 * r295) * (1. + 0.0652 * r295) ) ) ;
918 Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
920 Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
922 Grad[iParam] += shape ; // Derivative over energy
929 while(iparam < nPar ){
930 Double_t xpar = x[iparam] ;
931 Double_t zpar = x[iparam+1] ;
932 Double_t epar = x[iparam+2] ;
934 // fGeom->GetIncidentVector(*vtx,emcRP->GetPHOSMod(),xpar,zpar,vInc) ;
935 // efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar,vInc) ;
936 efit += epar * ShowerShape(xDigit - xpar,zDigit - zpar) ;
939 fret += (efit-emcEnergies[iDigit])*(efit-emcEnergies[iDigit])/emcEnergies[iDigit] ;
940 // Here we assume, that sigma = sqrt(E)
945 //____________________________________________________________________________
946 void AliPHOSClusterizerv1::Print(const Option_t *)const
948 // Print clusterizer parameters
951 TString taskName(GetName()) ;
952 taskName.ReplaceAll(Version(), "") ;
954 if( strcmp(GetName(), "") !=0 ) {
956 message = "\n--------------- %s %s -----------\n" ;
957 message += "Clusterizing digits from the file: %s\n" ;
958 message += " Branch: %s\n" ;
959 message += " EMC Clustering threshold = %f\n" ;
960 message += " EMC Local Maximum cut = %f\n" ;
961 message += " EMC Logarothmic weight = %f\n" ;
962 message += " CPV Clustering threshold = %f\n" ;
963 message += " CPV Local Maximum cut = %f\n" ;
964 message += " CPV Logarothmic weight = %f\n" ;
966 message += " Unfolding on\n" ;
968 message += " Unfolding off\n" ;
970 message += "------------------------------------------------------------------" ;
973 message = " AliPHOSClusterizerv1 not initialized " ;
975 AliInfo(Form("%s, %s %s %s %s %s %s %s %s %s %s", message.Data(),
980 fEmcClusteringThreshold,
983 fCpvClusteringThreshold,
987 //____________________________________________________________________________
988 void AliPHOSClusterizerv1::PrintRecPoints(Option_t * option)
990 // Prints list of RecPoints produced at the current pass of AliPHOSClusterizer
992 AliInfo(Form("\nFound %d EMC RecPoints and %d CPV RecPoints",
993 fEMCRecPoints->GetEntriesFast(),
994 fCPVRecPoints->GetEntriesFast() )) ;
996 if(strstr(option,"all")) {
997 printf("\n EMC clusters \n") ;
998 printf("Index Ene(MeV) Multi Module X Y Z Lambdas_1 Lambda_2 # of prim Primaries list\n") ;
1000 for (index = 0 ; index < fEMCRecPoints->GetEntries() ; index++) {
1001 AliPHOSEmcRecPoint * rp = (AliPHOSEmcRecPoint * )fEMCRecPoints->At(index) ;
1003 rp->GetLocalPosition(locpos);
1005 rp->GetElipsAxis(lambda);
1008 primaries = rp->GetPrimaries(nprimaries);
1009 printf("\n%6d %8.2f %3d %2d %4.1f %4.1f %4.1f %4f %4f %2d : ",
1010 rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(), rp->GetPHOSMod(),
1011 locpos.X(), locpos.Y(), locpos.Z(), lambda[0], lambda[1], nprimaries) ;
1013 for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) {
1014 printf("%d ", primaries[iprimary] ) ;
1019 //Now plot CPV recPoints
1020 printf("\n CPV clusters \n") ;
1021 printf("Index Ene(MeV) Module X Y Z \n") ;
1022 for (index = 0 ; index < fCPVRecPoints->GetEntries() ; index++) {
1023 AliPHOSCpvRecPoint * rp = (AliPHOSCpvRecPoint * )fCPVRecPoints->At(index) ;
1026 rp->GetLocalPosition(locpos);
1028 printf("\n%6d %8.2f %2d %4.1f %4.1f %4.1f \n",
1029 rp->GetIndexInList(), rp->GetEnergy(), rp->GetPHOSMod(),
1030 locpos.X(), locpos.Y(), locpos.Z()) ;
1036 //____________________________________________________________________________
1037 void AliPHOSClusterizerv1::SetDistancesToBadChannels()
1039 //For each EMC rec. point set the distance to the nearest bad crystal.
1040 //Author: Boris Polichtchouk
1042 if(!fgCalibData->GetNumOfEmcBadChannels()) return;
1043 AliInfo(Form("%d bad channel(s) found.\n",fgCalibData->GetNumOfEmcBadChannels()));
1046 fgCalibData->EmcBadChannelIds(badIds);
1048 AliPHOSEmcRecPoint* rp;
1051 TVector3 gposRecPoint; // global (in ALICE frame) position of rec. point
1052 TVector3 gposBadChannel; // global position of bad crystal
1055 Float_t dist,minDist;
1057 for(Int_t iRP=0; iRP<fEMCRecPoints->GetEntries(); iRP++){
1058 rp = (AliPHOSEmcRecPoint*)fEMCRecPoints->At(iRP);
1061 for(Int_t iBad=0; iBad<fgCalibData->GetNumOfEmcBadChannels(); iBad++) {
1062 rp->GetGlobalPosition(gposRecPoint,gmat);
1063 fGeom->RelPosInAlice(badIds[iBad],gposBadChannel);
1064 AliDebug(2,Form("BC position:[%.3f,%.3f,%.3f], RP position:[%.3f,%.3f,%.3f]. E=%.3f\n",
1065 gposBadChannel.X(),gposBadChannel.Y(),gposBadChannel.Z(),
1066 gposRecPoint.X(),gposRecPoint.Y(),gposRecPoint.Z(),rp->GetEnergy()));
1067 dR = gposBadChannel-gposRecPoint;
1069 if(dist<minDist) minDist = dist;
1072 rp->SetDistanceToBadCrystal(minDist);