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 //_________________________________________________________________________
20 //*-- Yves Schutz (SUBATECH)
21 // Reconstruction class. Redesigned from the old AliReconstructionner class and
22 // derived from STEER/AliReconstructor.
24 // --- ROOT system ---
26 // --- Standard library ---
28 // --- AliRoot header files ---
29 #include "AliEMCALReconstructor.h"
31 #include "AliESDEvent.h"
32 #include "AliESDCaloCluster.h"
33 #include "AliESDtrack.h"
34 #include "AliEMCALLoader.h"
35 #include "AliEMCALRawUtils.h"
36 #include "AliEMCALClusterizerv1.h"
37 #include "AliEMCALRecPoint.h"
38 #include "AliEMCALPID.h"
39 #include "AliEMCALTrigger.h"
40 #include "AliRawReader.h"
41 // to be removed - it is here just because of geom
43 #include "AliRunLoader.h"
45 ClassImp(AliEMCALReconstructor)
47 AliEMCALRecParam* AliEMCALReconstructor::fgkRecParam = 0; // EMCAL rec. parameters
49 //____________________________________________________________________________
50 AliEMCALReconstructor::AliEMCALReconstructor()
55 AliWarning("The Reconstruction parameters for EMCAL nonitialized - Used default one");
56 fgkRecParam = new AliEMCALRecParam;
60 //____________________________________________________________________________
61 AliEMCALReconstructor::AliEMCALReconstructor(const AliEMCALReconstructor & rec)
62 : AliReconstructor(rec),
68 //____________________________________________________________________________
69 AliEMCALReconstructor::~AliEMCALReconstructor()
74 //____________________________________________________________________________
75 void AliEMCALReconstructor::Reconstruct(TTree* digitsTree, TTree* clustersTree) const
77 // method called by AliReconstruction;
78 // Only the clusterization is performed,; the rest of the reconstruction is done in FillESD because the track
79 // segment maker needs access to the AliESD object to retrieve the tracks reconstructed by
80 // the global tracking.
81 // Works on the current event.
83 AliEMCALClusterizerv1 clu;
84 clu.SetInput(digitsTree);
85 clu.SetOutput(clustersTree);
87 clu.Digits2Clusters("deb all") ;
89 clu.Digits2Clusters("pseudo") ;
92 //____________________________________________________________________________
93 void AliEMCALReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
96 // Conversion from raw data to
98 // Works on a single-event basis
102 TClonesArray *digitsArr = new TClonesArray("AliEMCALDigit",100);
103 Int_t bufsize = 32000;
104 digitsTree->Branch("EMCAL", &digitsArr, bufsize);
106 static AliEMCALRawUtils rawUtils;
107 rawUtils.Raw2Digits(rawReader,digitsArr);
110 //____________________________________________________________________________
111 void AliEMCALReconstructor::FillESD(TTree* digitsTree, TTree* clustersTree,
112 AliESDEvent* esd) const
114 // Called by AliReconstruct after Reconstruct() and global tracking and vertexing
115 // Works on the current event
116 const double timeScale = 1.e+11; // transition constant from sec to 0.01 ns
118 // Creates AliESDCaloCluster from AliEMCALRecPoints
120 TObjArray *clusters = new TObjArray(100);
121 TBranch *branch = clustersTree->GetBranch("EMCALECARP");
122 branch->SetAddress(&clusters);
123 clustersTree->GetEvent(0);
125 Int_t nClusters = clusters->GetEntries(), nClustersNew=0;
126 AliDebug(1,Form("%d clusters",nClusters));
127 // Int_t nRP=0, nPC=0; // in input
128 esd->SetFirstEMCALCluster(esd->GetNumberOfCaloClusters()); // Put after Phos clusters
130 //######################################################
131 //#########Calculate trigger and set trigger info###########
132 //######################################################
135 // tr.SetPatchSize(1);//create 4x4 patches
138 Float_t maxAmp2x2 = tr.Get2x2MaxAmplitude();
139 Float_t maxAmpnxn = tr.GetnxnMaxAmplitude();
140 Float_t ampOutOfPatch2x2 = tr.Get2x2AmpOutOfPatch() ;
141 Float_t ampOutOfPatchnxn = tr.GetnxnAmpOutOfPatch() ;
143 AliEMCALGeometry * geom = 0;
144 AliRunLoader *runLoader = AliRunLoader::GetRunLoader();
145 if (runLoader->GetAliRun() && runLoader->GetAliRun()->GetDetector("EMCAL"))
146 geom = dynamic_cast<AliEMCAL*>(runLoader->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
148 geom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaulGeometryName());
150 Int_t iSM2x2 = tr.Get2x2SuperModule();
151 Int_t iSMnxn = tr.GetnxnSuperModule();
152 Int_t iCellPhi2x2 = tr.Get2x2CellPhi();
153 Int_t iCellPhinxn = tr.GetnxnCellPhi();
154 Int_t iCellEta2x2 = tr.Get2x2CellEta();
155 Int_t iCellEtanxn = tr.GetnxnCellEta();
157 AliDebug(2, Form("Trigger 2x2 max amp %f, out amp %f, SM %d, iphi %d ieta %d", maxAmp2x2, ampOutOfPatch2x2, iSM2x2,iCellPhi2x2, iCellEta2x2));
158 AliDebug(2, Form("Trigger 4x4 max amp %f , out amp %f, SM %d, iphi %d, ieta %d", maxAmpnxn, ampOutOfPatchnxn, iSMnxn,iCellPhinxn, iCellEtanxn));
160 TVector3 pos2x2(-1,-1,-1);
161 TVector3 posnxn(-1,-1,-1);
163 Int_t iAbsId2x2 = geom->GetAbsCellIdFromCellIndexes( iSM2x2, iCellPhi2x2, iCellEta2x2) ;
164 Int_t iAbsIdnxn = geom->GetAbsCellIdFromCellIndexes( iSMnxn, iCellPhinxn, iCellEtanxn) ;
165 geom->GetGlobal(iAbsId2x2, pos2x2);
166 geom->GetGlobal(iAbsIdnxn, posnxn);
168 TArrayF triggerPosition(6);
169 triggerPosition[0] = pos2x2(0) ;
170 triggerPosition[1] = pos2x2(1) ;
171 triggerPosition[2] = pos2x2(2) ;
172 triggerPosition[3] = posnxn(0) ;
173 triggerPosition[4] = posnxn(1) ;
174 triggerPosition[5] = posnxn(2) ;
176 TArrayF triggerAmplitudes(4);
177 triggerAmplitudes[0] = maxAmp2x2 ;
178 triggerAmplitudes[1] = ampOutOfPatch2x2 ;
179 triggerAmplitudes[2] = maxAmpnxn ;
180 triggerAmplitudes[3] = ampOutOfPatchnxn ;
182 esd->AddEMCALTriggerPosition(triggerPosition);
183 esd->AddEMCALTriggerAmplitudes(triggerAmplitudes);
185 //######################################################
186 //#######################TRACK MATCHING###############
187 //######################################################
188 //Fill list of integers, each one is index of track to which the cluster belongs.
190 // step 1 - initialize array of matched track indexes
191 Int_t *matchedTrack = new Int_t[nClusters];
192 for (Int_t iclus = 0; iclus < nClusters; iclus++)
193 matchedTrack[iclus] = -1; // neg. index --> no matched track
195 // step 2, change the flag for all matched clusters found in tracks
196 Int_t iemcalMatch = -1;
197 Int_t endtpc = esd->GetNumberOfTracks();
198 for (Int_t itrack = 0; itrack < endtpc; itrack++) {
199 AliESDtrack * track = esd->GetTrack(itrack) ; // retrieve track
200 iemcalMatch = track->GetEMCALcluster();
201 if(iemcalMatch >= 0) matchedTrack[iemcalMatch] = itrack;
204 //########################################
205 //##############Fill CaloClusters#############
206 //########################################
209 for (Int_t iClust = 0 ; iClust < nClusters ; iClust++) {
210 const AliEMCALRecPoint * clust = (const AliEMCALRecPoint*)clusters->At(iClust);
211 //if(clust->GetClusterType()== AliESDCaloCluster::kEMCALClusterv1) nRP++; else nPC++;
212 if (Debug()) clust->Print();
213 // Get information from EMCAL reconstruction points
216 clust->GetGlobalPosition(gpos);
217 for (Int_t ixyz=0; ixyz<3; ixyz++)
218 xyz[ixyz] = gpos[ixyz];
220 Int_t digitMult = clust->GetMultiplicity();
221 Short_t *amplList = new Short_t[digitMult];
222 Short_t *timeList = new Short_t[digitMult];
223 Short_t *digiList = new Short_t[digitMult];
224 Float_t *amplFloat = clust->GetEnergiesList();
225 Float_t *timeFloat = clust->GetTimeList();
226 Int_t *digitInts = clust->GetAbsId();
228 clust->GetElipsAxis(elipAxis);
230 // Convert Float_t* and Int_t* to Short_t* to save memory
231 // Problem : we should recalculate a cluster characteristics when discard digit(s)
232 Int_t newdigitMult = 0;
233 for (Int_t iDigit=0; iDigit<digitMult; iDigit++) {
234 if (amplFloat[iDigit] > 0) {
235 amplList[newdigitMult] = (UShort_t)(amplFloat[iDigit]*500);
236 // Time in units of 0.01 ns = 10 ps
237 if(timeFloat[iDigit] < 65536./timeScale)
238 timeList[newdigitMult] = (UShort_t)(timeFloat[iDigit]*timeScale);
240 timeList[newdigitMult] = 65535;
241 digiList[newdigitMult] = (UShort_t)(digitInts[iDigit]);
244 else if (clust->GetClusterType() != AliESDCaloCluster::kEMCALPseudoCluster)
245 Warning("FillESD()","Negative or 0 digit amplitude in cluster");
248 if(newdigitMult > 0) { // accept cluster if it has some digit
250 if(newdigitMult != digitMult) { // some digits were deleted
251 Short_t *amplListNew = new Short_t[newdigitMult];
252 Short_t *timeListNew = new Short_t[newdigitMult];
253 Short_t *digiListNew = new Short_t[newdigitMult];
254 for (Int_t iDigit=0; iDigit<newdigitMult; iDigit++) {
255 amplListNew[iDigit] = amplList[iDigit];
256 timeListNew[iDigit] = timeList[iDigit];
257 digiListNew[iDigit] = digiList[iDigit];
264 amplList = amplListNew;
265 timeList = timeListNew;
266 digiList = digiListNew;
270 Int_t parentMult = 0;
271 Int_t *parentInts = clust->GetParents(parentMult);
272 Short_t *parentList = new Short_t[parentMult];
273 for (Int_t ipr=0; ipr<parentMult; ipr++)
274 parentList[ipr] = (Short_t)(parentInts[ipr]);
277 // fills the ESDCaloCluster
278 AliESDCaloCluster * ec = new AliESDCaloCluster() ;
279 ec->SetClusterType(clust->GetClusterType());
280 ec->SetPosition(xyz);
281 ec->SetE(clust->GetEnergy());
282 TArrayS arrayAmpList(newdigitMult,amplList);
283 TArrayS arrayTimeList(newdigitMult,timeList);
284 TArrayS arrayIndexList(newdigitMult,digiList);
285 ec->AddDigitAmplitude(arrayAmpList);
286 ec->AddDigitTime(arrayTimeList);
287 ec->AddDigitIndex(arrayIndexList);
289 if(clust->GetClusterType()== AliESDCaloCluster::kEMCALClusterv1){
291 ec->SetClusterDisp(clust->GetDispersion());
292 ec->SetClusterChi2(-1); //not yet implemented
293 ec->SetM02(elipAxis[0]*elipAxis[0]) ;
294 ec->SetM20(elipAxis[1]*elipAxis[1]) ;
295 ec->SetM11(-1) ; //not yet implemented
297 TArrayS arrayTrackMatched(1);// Only one track, temporal solution.
298 arrayTrackMatched[0]= (Short_t)(matchedTrack[iClust]);
299 ec->AddTracksMatched(arrayTrackMatched);
301 TArrayS arrayParents(parentMult,parentList);
302 ec->AddLabels(arrayParents);
305 // add the cluster to the esd object
306 esd->AddCaloCluster(ec);
308 delete [] parentList;
309 } else { // no new ESD cluster
316 } // cycle on clusters
318 delete [] matchedTrack;
320 esd->SetNumberOfEMCALClusters(nClustersNew);
321 //if(nClustersNew != nClusters)
322 //printf(" ##### nClusters %i -> new %i ##### \n", nClusters, nClustersNew );
324 //Fill ESDCaloCluster with PID weights
325 AliEMCALPID *pid = new AliEMCALPID;
326 //pid->SetPrintInfo(kTRUE);
327 pid->SetReconstructor(kTRUE);