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[u/mrichter/AliRoot.git] / EMCAL / AliEMCALReconstructor.cxx
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f6019cda 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
18//_________________________________________________________________________
19//*--
20//*-- Yves Schutz (SUBATECH)
21// Reconstruction class. Redesigned from the old AliReconstructionner class and
22// derived from STEER/AliReconstructor.
23//
24// --- ROOT system ---
25
26// --- Standard library ---
27
28// --- AliRoot header files ---
f6019cda 29#include "AliEMCALReconstructor.h"
5dee926e 30
af885e0f 31#include "AliESDEvent.h"
89ffc0b0 32#include "AliESDCaloCluster.h"
6a0cf740 33#include "AliESDtrack.h"
5dee926e 34#include "AliEMCALLoader.h"
98e9578e 35#include "AliEMCALRawUtils.h"
f6019cda 36#include "AliEMCALClusterizerv1.h"
5dee926e 37#include "AliEMCALRecPoint.h"
dc293ae9 38#include "AliEMCALPID.h"
0964c2e9 39#include "AliEMCALTrigger.h"
1d59832c 40#include "AliRawReader.h"
c47157cd 41// to be removed - it is here just because of geom
42#include "AliRun.h"
43#include "AliRunLoader.h"
1d59832c 44
f6019cda 45ClassImp(AliEMCALReconstructor)
46
c47157cd 47AliEMCALRecParam* AliEMCALReconstructor::fgkRecParam = 0; // EMCAL rec. parameters
48
f6019cda 49//____________________________________________________________________________
18a21c7c 50AliEMCALReconstructor::AliEMCALReconstructor()
51 : fDebug(kFALSE)
f6019cda 52{
53 // ctor
c47157cd 54 if (!fgkRecParam) {
55 AliWarning("The Reconstruction parameters for EMCAL nonitialized - Used default one");
56 fgkRecParam = new AliEMCALRecParam;
57 }
f6019cda 58}
59
0a4cb131 60//____________________________________________________________________________
18a21c7c 61AliEMCALReconstructor::AliEMCALReconstructor(const AliEMCALReconstructor & rec)
62 : AliReconstructor(rec),
63 fDebug(rec.fDebug)
0a4cb131 64{
65 //copy ctor
0a4cb131 66}
f6019cda 67
68//____________________________________________________________________________
69AliEMCALReconstructor::~AliEMCALReconstructor()
70{
71 // dtor
72}
73
74//____________________________________________________________________________
c47157cd 75void AliEMCALReconstructor::Reconstruct(TTree* digitsTree, TTree* clustersTree) const
f6019cda 76{
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.
c47157cd 81 // Works on the current event.
f6019cda 82
c47157cd 83 AliEMCALClusterizerv1 clu;
84 clu.SetInput(digitsTree);
85 clu.SetOutput(clustersTree);
86 if ( Debug() )
87 clu.Digits2Clusters("deb all") ;
88 else
89 clu.Digits2Clusters("pseudo") ;
f6019cda 90}
91
92//____________________________________________________________________________
c47157cd 93void AliEMCALReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
98e9578e 94
a68156e6 95{
c47157cd 96 // Conversion from raw data to
97 // EMCAL digits.
98 // Works on a single-event basis
85c60a8e 99
98e9578e 100 rawReader->Reset() ;
98e9578e 101
c47157cd 102 TClonesArray *digitsArr = new TClonesArray("AliEMCALDigit",100);
103 Int_t bufsize = 32000;
104 digitsTree->Branch("EMCAL", &digitsArr, bufsize);
98e9578e 105
c47157cd 106 static AliEMCALRawUtils rawUtils;
107 rawUtils.Raw2Digits(rawReader,digitsArr);
a68156e6 108}
109
110//____________________________________________________________________________
c47157cd 111void AliEMCALReconstructor::FillESD(TTree* digitsTree, TTree* clustersTree,
112 AliESDEvent* esd) const
f6019cda 113{
98e9578e 114 // Called by AliReconstruct after Reconstruct() and global tracking and vertexing
c47157cd 115 // Works on the current event
98e9578e 116 const double timeScale = 1.e+11; // transition constant from sec to 0.01 ns
92da3372 117
85c60a8e 118 // Creates AliESDCaloCluster from AliEMCALRecPoints
c47157cd 119
120 TObjArray *clusters = new TObjArray(100);
121 TBranch *branch = clustersTree->GetBranch("EMCALECARP");
122 branch->SetAddress(&clusters);
123 clustersTree->GetEvent(0);
124
a7a5421e 125 Int_t nClusters = clusters->GetEntries(), nClustersNew=0;
c47157cd 126 AliDebug(1,Form("%d clusters",nClusters));
5d9e7bd7 127 // Int_t nRP=0, nPC=0; // in input
a7a5421e 128 esd->SetFirstEMCALCluster(esd->GetNumberOfCaloClusters()); // Put after Phos clusters
92da3372 129
6a0cf740 130 //######################################################
0964c2e9 131 //#########Calculate trigger and set trigger info###########
6a0cf740 132 //######################################################
0964c2e9 133
134 AliEMCALTrigger tr ;
135 // tr.SetPatchSize(1);//create 4x4 patches
136 tr.Trigger();
137
138 Float_t maxAmp2x2 = tr.Get2x2MaxAmplitude();
139 Float_t maxAmpnxn = tr.GetnxnMaxAmplitude();
140 Float_t ampOutOfPatch2x2 = tr.Get2x2AmpOutOfPatch() ;
141 Float_t ampOutOfPatchnxn = tr.GetnxnAmpOutOfPatch() ;
142
98e9578e 143 AliEMCALGeometry * geom = 0;
c47157cd 144 AliRunLoader *runLoader = AliRunLoader::GetRunLoader();
98e9578e 145 if (runLoader->GetAliRun() && runLoader->GetAliRun()->GetDetector("EMCAL"))
146 geom = dynamic_cast<AliEMCAL*>(runLoader->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
147 if (geom == 0)
148 geom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaulGeometryName());
149
0964c2e9 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();
156
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));
159
160 TVector3 pos2x2(-1,-1,-1);
161 TVector3 posnxn(-1,-1,-1);
162
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);
167
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) ;
175
176 TArrayF triggerAmplitudes(4);
177 triggerAmplitudes[0] = maxAmp2x2 ;
178 triggerAmplitudes[1] = ampOutOfPatch2x2 ;
179 triggerAmplitudes[2] = maxAmpnxn ;
180 triggerAmplitudes[3] = ampOutOfPatchnxn ;
181
182 esd->AddEMCALTriggerPosition(triggerPosition);
183 esd->AddEMCALTriggerAmplitudes(triggerAmplitudes);
184
6a0cf740 185 //######################################################
186 //#######################TRACK MATCHING###############
187 //######################################################
188 //Fill list of integers, each one is index of track to which the cluster belongs.
189
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
194
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();
65f4a419 201 if(iemcalMatch >= 0) matchedTrack[iemcalMatch] = itrack;
6a0cf740 202 }
203
204 //########################################
205 //##############Fill CaloClusters#############
206 //########################################
0964c2e9 207
0964c2e9 208
5dee926e 209 for (Int_t iClust = 0 ; iClust < nClusters ; iClust++) {
c47157cd 210 const AliEMCALRecPoint * clust = (const AliEMCALRecPoint*)clusters->At(iClust);
5d9e7bd7 211 //if(clust->GetClusterType()== AliESDCaloCluster::kClusterv1) nRP++; else nPC++;
85c60a8e 212 if (Debug()) clust->Print();
a7a5421e 213 // Get information from EMCAL reconstruction points
85c60a8e 214 Float_t xyz[3];
5dee926e 215 TVector3 gpos;
216 clust->GetGlobalPosition(gpos);
f6019cda 217 for (Int_t ixyz=0; ixyz<3; ixyz++)
5dee926e 218 xyz[ixyz] = gpos[ixyz];
7592dfc4 219
85c60a8e 220 Int_t digitMult = clust->GetMultiplicity();
7592dfc4 221 Short_t *amplList = new Short_t[digitMult];
222 Short_t *timeList = new Short_t[digitMult];
223 Short_t *digiList = new Short_t[digitMult];
85c60a8e 224 Float_t *amplFloat = clust->GetEnergiesList();
225 Float_t *timeFloat = clust->GetTimeList();
226 Int_t *digitInts = clust->GetAbsId();
8a11aef1 227 Float_t elipAxis[2];
92da3372 228 clust->GetElipsAxis(elipAxis);
7592dfc4 229
230 // Convert Float_t* and Int_t* to Short_t* to save memory
a7a5421e 231 // Problem : we should recalculate a cluster characteristics when discard digit(s)
f1487f22 232 Int_t newdigitMult = 0;
92da3372 233 for (Int_t iDigit=0; iDigit<digitMult; iDigit++) {
98e9578e 234 if (amplFloat[iDigit] > 0) {
a7a5421e 235 amplList[newdigitMult] = (UShort_t)(amplFloat[iDigit]*500);
98e9578e 236 // Time in units of 0.01 ns = 10 ps
237 if(timeFloat[iDigit] < 65536./timeScale)
238 timeList[newdigitMult] = (UShort_t)(timeFloat[iDigit]*timeScale);
239 else
240 timeList[newdigitMult] = 65535;
241 digiList[newdigitMult] = (UShort_t)(digitInts[iDigit]);
242 newdigitMult++;
92da3372 243 }
98e9578e 244 else if (clust->GetClusterType() != AliESDCaloCluster::kPseudoCluster)
245 Warning("FillESD()","Negative or 0 digit amplitude in cluster");
92da3372 246 }
7592dfc4 247
a7a5421e 248 if(newdigitMult > 0) { // accept cluster if it has some digit
249 nClustersNew++;
250 if(newdigitMult != digitMult) { // some digits were deleted
7592dfc4 251 Short_t *amplListNew = new Short_t[newdigitMult];
252 Short_t *timeListNew = new Short_t[newdigitMult];
253 Short_t *digiListNew = new Short_t[newdigitMult];
a7a5421e 254 for (Int_t iDigit=0; iDigit<newdigitMult; iDigit++) {
255 amplListNew[iDigit] = amplList[iDigit];
256 timeListNew[iDigit] = timeList[iDigit];
257 digiListNew[iDigit] = digiList[iDigit];
258 }
7592dfc4 259
a7a5421e 260 delete [] amplList;
261 delete [] timeList;
262 delete [] digiList;
7592dfc4 263
a7a5421e 264 amplList = amplListNew;
265 timeList = timeListNew;
266 digiList = digiListNew;
267 }
7592dfc4 268
65721814 269 //Primaries
7592dfc4 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]);
275
17773e2e 276
a7a5421e 277 // fills the ESDCaloCluster
278 AliESDCaloCluster * ec = new AliESDCaloCluster() ;
69db97f5 279 ec->SetEMCAL(kTRUE);
a7a5421e 280 ec->SetClusterType(clust->GetClusterType());
7592dfc4 281 ec->SetPosition(xyz);
282 ec->SetE(clust->GetEnergy());
283 TArrayS arrayAmpList(newdigitMult,amplList);
284 TArrayS arrayTimeList(newdigitMult,timeList);
285 TArrayS arrayIndexList(newdigitMult,digiList);
286 ec->AddDigitAmplitude(arrayAmpList);
287 ec->AddDigitTime(arrayTimeList);
288 ec->AddDigitIndex(arrayIndexList);
289
a7a5421e 290 if(clust->GetClusterType()== AliESDCaloCluster::kClusterv1){
7592dfc4 291
a7a5421e 292 ec->SetClusterDisp(clust->GetDispersion());
293 ec->SetClusterChi2(-1); //not yet implemented
294 ec->SetM02(elipAxis[0]*elipAxis[0]) ;
295 ec->SetM20(elipAxis[1]*elipAxis[1]) ;
296 ec->SetM11(-1) ; //not yet implemented
7592dfc4 297
298 TArrayS arrayTrackMatched(1);// Only one track, temporal solution.
299 arrayTrackMatched[0]= (Short_t)(matchedTrack[iClust]);
300 ec->AddTracksMatched(arrayTrackMatched);
301
302 TArrayS arrayParents(parentMult,parentList);
303 ec->AddLabels(arrayParents);
a7a5421e 304 }
7592dfc4 305
6a0cf740 306 // add the cluster to the esd object
a7a5421e 307 esd->AddCaloCluster(ec);
308 delete ec;
17773e2e 309 delete [] parentList;
a7a5421e 310 } else { // no new ESD cluster
17773e2e 311
a7a5421e 312 }
17773e2e 313 delete [] amplList;
314 delete [] timeList;
315 delete [] digiList;
316
a7a5421e 317 } // cycle on clusters
17773e2e 318
319 delete [] matchedTrack;
320
a7a5421e 321 esd->SetNumberOfEMCALClusters(nClustersNew);
5d9e7bd7 322 //if(nClustersNew != nClusters)
323 //printf(" ##### nClusters %i -> new %i ##### \n", nClusters, nClustersNew );
7592dfc4 324
dc293ae9 325 //Fill ESDCaloCluster with PID weights
dc293ae9 326 AliEMCALPID *pid = new AliEMCALPID;
327 //pid->SetPrintInfo(kTRUE);
328 pid->SetReconstructor(kTRUE);
329 pid->RunPID(esd);
d0708678 330 delete pid;
f6019cda 331}
dc293ae9 332
98e9578e 333