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 ---
30 #include "AliAltroMapping.h"
31 #include "AliESDEvent.h"
32 #include "AliESDCaloCluster.h"
33 #include "AliPHOSReconstructor.h"
34 #include "AliPHOSClusterizerv1.h"
35 #include "AliPHOSTrackSegmentMakerv1.h"
36 #include "AliPHOSPIDv1.h"
37 #include "AliPHOSTracker.h"
38 #include "AliRawReader.h"
39 #include "AliPHOSTrigger.h"
40 #include "AliPHOSGeometry.h"
41 #include "AliPHOSRecoParam.h"
42 #include "AliPHOSRecoParamEmc.h"
43 #include "AliPHOSRecoParamCpv.h"
44 #include "AliPHOSDigit.h"
45 #include "AliPHOSTrackSegment.h"
46 #include "AliPHOSEmcRecPoint.h"
47 #include "AliPHOSRecParticle.h"
48 #include "AliPHOSRawDecoder.h"
49 #include "AliPHOSRawDecoderv1.h"
50 #include "AliPHOSRawDigiProducer.h"
51 #include "AliPHOSPulseGenerator.h"
53 ClassImp(AliPHOSReconstructor)
55 Bool_t AliPHOSReconstructor::fgDebug = kFALSE ;
56 AliPHOSRecoParam* AliPHOSReconstructor::fgkRecoParamEmc =0; // EMC rec. parameters
57 AliPHOSRecoParam* AliPHOSReconstructor::fgkRecoParamCpv =0; // CPV rec. parameters
59 //____________________________________________________________________________
60 AliPHOSReconstructor::AliPHOSReconstructor() :
65 if (!fgkRecoParamEmc) {
66 AliWarning("The Reconstruction parameters for EMC nonitialized - Used default one");
67 fgkRecoParamEmc = AliPHOSRecoParamEmc::GetEmcDefaultParameters();
70 if (!fgkRecoParamCpv) {
71 AliWarning("The Reconstruction parameters for CPV nonitialized - Used default one");
72 fgkRecoParamCpv = AliPHOSRecoParamCpv::GetCpvDefaultParameters();
75 fGeom = AliPHOSGeometry::GetInstance("IHEP","");
78 //____________________________________________________________________________
79 AliPHOSReconstructor::~AliPHOSReconstructor()
85 //____________________________________________________________________________
86 void AliPHOSReconstructor::Reconstruct(TTree* digitsTree, TTree* clustersTree) const
88 // 'single-event' local reco method called by AliReconstruction;
89 // Only the clusterization is performed,; the rest of the reconstruction is done in FillESD because the track
90 // segment maker needs access to the AliESDEvent object to retrieve the tracks reconstructed by
91 // the global tracking.
93 AliPHOSClusterizerv1 clu(fGeom);
94 clu.SetInput(digitsTree);
95 clu.SetOutput(clustersTree);
97 clu.Digits2Clusters("deb all") ;
99 clu.Digits2Clusters("") ;
102 //____________________________________________________________________________
103 void AliPHOSReconstructor::FillESD(TTree* digitsTree, TTree* clustersTree,
104 AliESDEvent* esd) const
106 // This method produces PHOS rec-particles,
107 // then it creates AliESDtracks out of them and
108 // write tracks to the ESD
110 AliPHOSTrackSegmentMaker *tsm = new AliPHOSTrackSegmentMakerv1(fGeom);
111 AliPHOSPID *pid = new AliPHOSPIDv1 (fGeom);
113 // do current event; the loop over events is done by AliReconstruction::Run()
115 tsm->SetInput(clustersTree);
117 tsm->Clusters2TrackSegments("deb all") ;
119 tsm->Clusters2TrackSegments("") ;
121 pid->SetInput(clustersTree, tsm->GetTrackSegments()) ;
124 pid->TrackSegments2RecParticles("deb all") ;
126 pid->TrackSegments2RecParticles("") ;
129 // This function creates AliESDtracks from AliPHOSRecParticles
131 // writes them to the ESD
133 TClonesArray *recParticles = pid->GetRecParticles();
134 Int_t nOfRecParticles = recParticles->GetEntries();
136 esd->SetNumberOfPHOSClusters(nOfRecParticles) ;
137 esd->SetFirstPHOSCluster(esd->GetNumberOfCaloClusters()) ;
139 AliDebug(2,Form("%d rec. particles, option %s",nOfRecParticles,GetOption()));
141 //#########Calculate trigger and set trigger info###########
144 // tr.SetPatchSize(1);//create 4x4 patches
147 Float_t maxAmp2x2 = tr.Get2x2MaxAmplitude();
148 Float_t maxAmpnxn = tr.GetnxnMaxAmplitude();
149 Float_t ampOutOfPatch2x2 = tr.Get2x2AmpOutOfPatch() ;
150 Float_t ampOutOfPatchnxn = tr.GetnxnAmpOutOfPatch() ;
152 Int_t iSM2x2 = tr.Get2x2SuperModule();
153 Int_t iSMnxn = tr.GetnxnSuperModule();
154 Int_t iCrystalPhi2x2 = tr.Get2x2CrystalPhi();
155 Int_t iCrystalPhinxn = tr.GetnxnCrystalPhi();
156 Int_t iCrystalEta2x2 = tr.Get2x2CrystalEta();
157 Int_t iCrystalEtanxn = tr.GetnxnCrystalEta();
159 AliDebug(2, Form("Trigger 2x2 max amp %f, out amp %f, SM %d, iphi %d ieta %d", maxAmp2x2, ampOutOfPatch2x2, iSM2x2,iCrystalPhi2x2, iCrystalEta2x2));
160 AliDebug(2, Form("Trigger 4x4 max amp %f , out amp %f, SM %d, iphi %d, ieta %d", maxAmpnxn, ampOutOfPatchnxn, iSMnxn,iCrystalPhinxn, iCrystalEtanxn));
162 Int_t iRelId2x2 []= {iSM2x2+1,0,iCrystalPhi2x2,iCrystalEta2x2};// PHOS modules in order to calculate AbsId need to be 1-5 not 0-4 as returns trigger.
164 Int_t iRelIdnxn []= {iSMnxn+1,0,iCrystalPhinxn,iCrystalEtanxn};// PHOS modules in order to calculate AbsId need to be 1-5 not 0-4 as returns trigger.
166 TVector3 pos2x2(-1,-1,-1);
167 TVector3 posnxn(-1,-1,-1);
168 fGeom->RelToAbsNumbering(iRelId2x2, iAbsId2x2);
169 fGeom->RelToAbsNumbering(iRelIdnxn, iAbsIdnxn);
170 fGeom->RelPosInAlice(iAbsId2x2, pos2x2);
171 fGeom->RelPosInAlice(iAbsIdnxn, posnxn);
173 TArrayF triggerPosition(6);
174 triggerPosition[0] = pos2x2(0) ;
175 triggerPosition[1] = pos2x2(1) ;
176 triggerPosition[2] = pos2x2(2) ;
177 triggerPosition[3] = posnxn(0) ;
178 triggerPosition[4] = posnxn(1) ;
179 triggerPosition[5] = posnxn(2) ;
181 TArrayF triggerAmplitudes(4);
182 triggerAmplitudes[0] = maxAmp2x2 ;
183 triggerAmplitudes[1] = ampOutOfPatch2x2 ;
184 triggerAmplitudes[2] = maxAmpnxn ;
185 triggerAmplitudes[3] = ampOutOfPatchnxn ;
187 //esd->SetPHOSTriggerCells(triggerPosition);
188 esd->AddPHOSTriggerPosition(triggerPosition);
189 esd->AddPHOSTriggerAmplitudes(triggerAmplitudes);
191 //######################################
194 TBranch *branch = digitsTree->GetBranch("PHOS");
196 AliError("can't get the branch with the PHOS digits !");
199 TClonesArray *fDigitsArr = new TClonesArray("AliPHOSDigit",100);
200 branch->SetAddress(&fDigitsArr);
203 // Get the clusters array
204 TBranch *emcbranch = clustersTree->GetBranch("PHOSEmcRP");
206 AliError("can't get the branch with the PHOS EMC clusters !");
210 TObjArray *fEmcRecPoints = new TObjArray(100) ;
211 emcbranch->SetAddress(&fEmcRecPoints);
212 emcbranch->GetEntry(0);
215 const Float_t kBigShort = std::numeric_limits<short int>::max() - 1;
216 const Float_t nsec100 = 1e9*100.; // units of 0.01 ns
217 const Float_t gev500 = 500.; // units of GeV/500
219 for (Int_t recpart = 0 ; recpart < nOfRecParticles ; recpart++) {
220 AliPHOSRecParticle * rp = dynamic_cast<AliPHOSRecParticle*>(recParticles->At(recpart));
223 // Get track segment and EMC rec.point associated with this rec.particle
224 AliPHOSTrackSegment *ts = static_cast<AliPHOSTrackSegment *>(tsm->GetTrackSegments()->At(rp->GetPHOSTSIndex()));
226 AliPHOSEmcRecPoint *emcRP = static_cast<AliPHOSEmcRecPoint *>(fEmcRecPoints->At(ts->GetEmcIndex()));
227 AliESDCaloCluster *ec = new AliESDCaloCluster() ;
230 for (Int_t ixyz=0; ixyz<3; ixyz++)
231 xyz[ixyz] = rp->GetPos()[ixyz];
233 AliDebug(2,Form("Global position xyz=(%f,%f,%f)",xyz[0],xyz[1],xyz[2]));
235 //Create digits lists
236 Int_t digitMult = emcRP->GetDigitsMultiplicity();
237 Int_t *digitsList = emcRP->GetDigitsList();
238 Float_t *rpElist = emcRP->GetEnergiesList() ;
239 Short_t *amplList = new Short_t[digitMult];
240 Short_t *timeList = new Short_t[digitMult];
241 Short_t *digiList = new Short_t[digitMult];
244 // Convert Float_t* and Int_t* to Short_t* to save memory
245 for (Int_t iDigit=0; iDigit<digitMult; iDigit++) {
247 AliPHOSDigit *digit = static_cast<AliPHOSDigit *>(fDigitsArr->At(digitsList[iDigit]));
249 (Short_t)(TMath::Min(rpElist[iDigit]*gev500,kBigShort)); // Energy in units of GeV/500
250 // We should add here not full energy of digit, but unfolded one, stored in RecPoint
251 // amplList[iDigit] =
252 // (Short_t)(TMath::Min(digit->GetEnergy()*gev500,kBigShort)); // Energy in units of GeV/500
254 (Short_t)(TMath::Max(-kBigShort,TMath::Min(digit->GetTime()*nsec100,kBigShort))); // time in units of 0.01 ns
255 digiList[iDigit] = (Short_t)(digit->GetId());
262 Int_t *primList = emcRP->GetPrimaries(primMult);
264 // fills the ESDCaloCluster
266 ec->SetClusterType(AliESDCaloCluster::kPHOSCluster);
267 ec->SetPosition(xyz); //rec.point position in MARS
268 ec->SetE(rp->Energy()); //total particle energy
269 ec->SetClusterDisp(emcRP->GetDispersion()); //cluster dispersion
270 ec->SetPid(rp->GetPID()) ; //array of particle identification
271 ec->SetM02(emcRP->GetM2x()) ; //second moment M2x
272 ec->SetM20(emcRP->GetM2z()) ; //second moment M2z
273 ec->SetNExMax(emcRP->GetNExMax()); //number of local maxima
274 ec->SetEmcCpvDistance(ts->GetCpvDistance("r")); //Only radius, what about separate x,z????
275 ec->SetClusterChi2(-1); //not yet implemented
276 ec->SetM11(-1) ; //not yet implemented
279 TArrayS arrayAmpList(digitMult,amplList);
280 TArrayS arrayTimeList(digitMult,timeList);
281 TArrayS arrayIndexList(digitMult,digiList);
282 ec->AddDigitAmplitude(arrayAmpList);
283 ec->AddDigitTime(arrayTimeList);
284 ec->AddDigitIndex(arrayIndexList);
286 //Distance to the nearest bad crystal
287 ec->SetDistanceToBadChannel(emcRP->GetDistanceToBadCrystal());
289 //Array of MC indeces
290 TArrayI arrayPrim(primMult,primList);
291 ec->AddLabels(arrayPrim);
293 //Array of tracks uncomment when available in future
294 //TArrayS arrayTrackMatched(1);// Only one track, temporal solution.
295 //arrayTrackMatched[0]= (Short_t)(matchedTrack[iClust]);
296 //ec->AddTracksMatched(arrayTrackMatched);
298 // add the track to the esd object
299 esd->AddCaloCluster(ec);
305 fDigitsArr ->Delete();
307 fEmcRecPoints->Delete();
308 delete fEmcRecPoints;
313 //____________________________________________________________________________
314 AliTracker* AliPHOSReconstructor::CreateTracker() const
316 // creates the PHOS tracker
317 return new AliPHOSTracker();
320 //____________________________________________________________________________
321 void AliPHOSReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
323 // Converts raw data to
325 // Works on a single-event basis
329 AliPHOSRawDecoder * dc ;
331 const TObjArray* maps = AliPHOSRecoParamEmc::GetMappings();
332 if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!");
334 AliAltroMapping *mapping[4];
335 for(Int_t i = 0; i < 4; i++) {
336 mapping[i] = (AliAltroMapping*)maps->At(i);
339 if(strcmp(fgkRecoParamEmc->DecoderVersion(),"v1")==0)
340 dc=new AliPHOSRawDecoderv1(rawReader,mapping);
342 dc=new AliPHOSRawDecoder(rawReader,mapping);
344 TString option = GetOption();
345 if (option.Contains("OldRCUFormat"))
346 dc->SetOldRCUFormat(kTRUE);
348 dc->SetOldRCUFormat(kFALSE);
350 dc->SubtractPedestals(fgkRecoParamEmc->SubtractPedestals());
352 TClonesArray *digits = new TClonesArray("AliPHOSDigit",1);
353 digits->SetName("DIGITS");
354 Int_t bufsize = 32000;
355 digitsTree->Branch("PHOS", &digits, bufsize);
357 AliPHOSRawDigiProducer pr;
358 pr.MakeDigits(digits,dc);
363 if(strcmp(fgkRecoParamEmc->DecoderVersion(),"v1")==0){ //"Energy" calculated as fit
364 for(Int_t i=0; i<digits->GetEntries(); i++) {
365 AliPHOSDigit* digit = (AliPHOSDigit*)digits->At(i);
366 digit->SetEnergy(digit->GetEnergy()*0.005); //We assume here 5 MeV/ADC channel
367 digit->SetTime(digit->GetTime()*1.e-7) ; //Here we assume sample step==100 ns TO BE FIXED!!!!!!!!!!!!!
370 else{ //Digits energy calculated as maximal energy
371 for(Int_t i=0; i<digits->GetEntries(); i++) {
372 AliPHOSDigit* digit = (AliPHOSDigit*)digits->At(i);
373 digit->SetEnergy(digit->GetEnergy()/AliPHOSPulseGenerator::GeV2ADC());
377 // Clean up digits below the noise threshold
378 // Assuming the digit noise to be 4 MeV, we suppress digits within
379 // 3-sigma of the noise.
380 // This parameter should be passed via AliPHOSRecoParamEmc later
382 const Double_t emcDigitThreshold = 0.012;
383 for(Int_t i=0; i<digits->GetEntries(); i++) {
384 AliPHOSDigit* digit = (AliPHOSDigit*)digits->At(i);
385 if(digit->GetEnergy() < emcDigitThreshold)
386 digits->RemoveAt(i) ;
398 for(Int_t iDigit=0; iDigit<digits->GetEntries(); iDigit++) {
399 AliPHOSDigit* digit = (AliPHOSDigit*)digits->At(iDigit);
400 if(digit->GetEnergy()>eMax) {
401 fGeom->AbsToRelNumbering(digit->GetId(),relId);
402 eMax=digit->GetEnergy();
409 AliDebug(1,Form("Digit with max. energy: modMax %d colMax %d rowMax %d eMax %f\n\n",
410 modMax,colMax,rowMax,eMax));