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c9b2f104 | 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 | // Implementation version v1 of the EMCAL particle identifier | |
20 | ||
21 | //*-- Author: Yves Schutz (SUBATECH) | |
22 | // | |
23 | // --- ROOT system --- | |
d64c959b | 24 | //#include "TROOT.h" |
c9b2f104 | 25 | #include "TTree.h" |
c9b2f104 | 26 | #include "TBenchmark.h" |
c9b2f104 | 27 | #include "TSystem.h" |
88cb7938 | 28 | |
29 | // --- Standard library --- | |
30 | ||
31 | // --- AliRoot header files --- | |
af9bd3cf | 32 | #include "AliGenerator.h" |
c9b2f104 | 33 | #include "AliEMCALPIDv1.h" |
c9b2f104 | 34 | #include "AliEMCALRecParticle.h" |
c9b2f104 | 35 | #include "AliEMCALGetter.h" |
88cb7938 | 36 | |
37 | ClassImp( AliEMCALPIDv1) | |
c9b2f104 | 38 | |
39 | //____________________________________________________________________________ | |
40 | AliEMCALPIDv1::AliEMCALPIDv1():AliEMCALPID() | |
41 | { | |
42 | // default ctor | |
88cb7938 | 43 | |
c9b2f104 | 44 | InitParameters() ; |
45 | fDefaultInit = kTRUE ; | |
88cb7938 | 46 | |
47 | } | |
c9b2f104 | 48 | |
88cb7938 | 49 | //____________________________________________________________________________ |
50 | AliEMCALPIDv1::AliEMCALPIDv1(const AliEMCALPIDv1 & pid ):AliEMCALPID(pid) | |
51 | { | |
52 | // ctor | |
53 | InitParameters() ; | |
54 | Init() ; | |
55 | ||
c9b2f104 | 56 | } |
57 | ||
58 | //____________________________________________________________________________ | |
88cb7938 | 59 | AliEMCALPIDv1::AliEMCALPIDv1(const TString alirunFileName, const TString eventFolderName):AliEMCALPID(alirunFileName, eventFolderName) |
c9b2f104 | 60 | { |
61 | //ctor with the indication on where to look for the track segments | |
62 | ||
63 | InitParameters() ; | |
c9b2f104 | 64 | Init() ; |
65 | fDefaultInit = kFALSE ; | |
66 | ||
67 | } | |
68 | ||
69 | //____________________________________________________________________________ | |
70 | AliEMCALPIDv1::~AliEMCALPIDv1() | |
71 | { | |
72 | // dtor | |
c9b2f104 | 73 | } |
74 | ||
75 | //____________________________________________________________________________ | |
76 | const TString AliEMCALPIDv1::BranchName() const | |
77 | { | |
88cb7938 | 78 | |
79 | return GetName() ; | |
c9b2f104 | 80 | } |
81 | ||
af9bd3cf | 82 | //____________________________________________________________________________ |
83 | Float_t AliEMCALPIDv1::GetCalibratedEnergy(Float_t e) const | |
84 | { | |
85 | // It calibrates Energy depending on the recpoint energy. | |
86 | // The energy of the reconstructed cluster is corrected with | |
87 | // the formula A + B* E + C* E^2, whose parameters where obtained | |
88 | // through the study of the reconstructed energy distribution of | |
89 | // monoenergetic photons. | |
90 | ||
91 | //Float_t p[]={0.,0.,0.}; | |
92 | //for (Int_t i=0; i<3; i++) p[i] = GetParameterCalibration(i); | |
93 | Float_t enerec = e ; // p[0] + p[1]*e + p[2]*e*e; | |
94 | return enerec ; | |
95 | ||
96 | } | |
97 | //____________________________________________________________________________ | |
98 | TVector3 AliEMCALPIDv1::GetMomentumDirection(AliEMCALTowerRecPoint * emc)const | |
99 | { | |
100 | // Calculates the momentum direction: | |
101 | // direction is given by IP and this RecPoint | |
102 | ||
103 | ||
104 | TVector3 dir(0,0,0) ; | |
105 | TVector3 emcglobalpos ; | |
106 | TMatrix dummy ; | |
107 | ||
108 | emc->GetGlobalPosition(emcglobalpos, dummy) ; | |
109 | ||
110 | ||
111 | dir = emcglobalpos ; | |
112 | dir.SetZ( -dir.Z() ) ; // why ? | |
113 | // dir.SetMag(1.) ; Removed to avoid warings !!!!!!!!!!!!!! TO BE REVISED | |
114 | ||
115 | //account correction to the position of IP | |
116 | Float_t xo,yo,zo ; //Coordinates of the origin | |
117 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
118 | TVector3 origin(xo,yo,zo); | |
119 | dir = dir - origin ; | |
120 | ||
121 | return dir ; | |
122 | } | |
123 | ||
c9b2f104 | 124 | //____________________________________________________________________________ |
125 | void AliEMCALPIDv1::Init() | |
126 | { | |
127 | // Make all memory allocations that are not possible in default constructor | |
128 | // Add the PID task to the list of EMCAL tasks | |
129 | ||
c9b2f104 | 130 | |
88cb7938 | 131 | AliEMCALGetter * gime = AliEMCALGetter::Instance(GetTitle(), fEventFolderName.Data()) ; |
c9b2f104 | 132 | |
88cb7938 | 133 | if ( !gime->PID() ) |
134 | gime->PostPID(this) ; | |
c9b2f104 | 135 | } |
136 | ||
137 | //____________________________________________________________________________ | |
138 | void AliEMCALPIDv1::InitParameters() | |
139 | { | |
d64c959b | 140 | // Initialize the parameters |
c9b2f104 | 141 | fRecParticlesInRun = 0 ; |
142 | fNEvent = 0 ; | |
143 | fRecParticlesInRun = 0 ; | |
c9b2f104 | 144 | } |
145 | ||
146 | //____________________________________________________________________________ | |
147 | ||
148 | void AliEMCALPIDv1::Exec(Option_t * option) | |
149 | { | |
150 | //Steering method | |
88cb7938 | 151 | |
c9b2f104 | 152 | if(strstr(option,"tim")) |
153 | gBenchmark->Start("EMCALPID"); | |
154 | ||
155 | if(strstr(option,"print")) { | |
156 | Print("") ; | |
157 | return ; | |
158 | } | |
88cb7938 | 159 | AliEMCALGetter * gime = AliEMCALGetter::Instance() ; |
160 | ||
7b8d3392 | 161 | if (fLastEvent == -1) |
162 | fLastEvent = gime->MaxEvent() - 1 ; | |
163 | else | |
164 | fLastEvent = TMath::Min(fLastEvent,gime->MaxEvent()); | |
165 | Int_t nEvents = fLastEvent - fFirstEvent + 1; | |
166 | ||
c9b2f104 | 167 | Int_t ievent ; |
168 | ||
169 | ||
7b8d3392 | 170 | for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) { |
af9bd3cf | 171 | gime->Event(ievent,"R") ; |
172 | MakeRecParticles() ; | |
173 | WriteRecParticles(); | |
174 | if(strstr(option,"deb")) | |
175 | PrintRecParticles(option) ; | |
176 | //increment the total number of rec particles per run | |
177 | fRecParticlesInRun += gime->RecParticles()->GetEntriesFast() ; | |
178 | ||
c9b2f104 | 179 | } |
c9b2f104 | 180 | if(strstr(option,"tim")){ |
181 | gBenchmark->Stop("EMCALPID"); | |
fdebddeb | 182 | printf("Exec: took %f seconds for PID %f seconds per event", |
c9b2f104 | 183 | gBenchmark->GetCpuTime("EMCALPID"), |
7b8d3392 | 184 | gBenchmark->GetCpuTime("EMCALPID")/nEvents) ; |
c9b2f104 | 185 | } |
88cb7938 | 186 | |
187 | Unload(); | |
c9b2f104 | 188 | } |
189 | ||
190 | //____________________________________________________________________________ | |
191 | void AliEMCALPIDv1::MakeRecParticles(){ | |
192 | ||
193 | // Makes a RecParticle out of a TrackSegment | |
194 | ||
88cb7938 | 195 | AliEMCALGetter * gime = AliEMCALGetter::Instance() ; |
196 | TObjArray * aECARecPoints = gime->ECARecPoints() ; | |
af9bd3cf | 197 | if ( !aECARecPoints ) { |
c9b2f104 | 198 | Fatal("MakeRecParticles", "RecPoints or TrackSegments not found !") ; |
199 | } | |
200 | TClonesArray * recParticles = gime->RecParticles() ; | |
201 | recParticles->Clear(); | |
202 | ||
af9bd3cf | 203 | TIter next(aECARecPoints) ; |
204 | AliEMCALTowerRecPoint * eca ; | |
c9b2f104 | 205 | Int_t index = 0 ; |
206 | AliEMCALRecParticle * rp ; | |
af9bd3cf | 207 | while ( (eca = (AliEMCALTowerRecPoint *)next()) ) { |
c9b2f104 | 208 | |
209 | new( (*recParticles)[index] ) AliEMCALRecParticle() ; | |
210 | rp = (AliEMCALRecParticle *)recParticles->At(index) ; | |
af9bd3cf | 211 | rp->SetRecPoint(index) ; |
c9b2f104 | 212 | rp->SetIndexInList(index) ; |
213 | ||
c9b2f104 | 214 | // Now set type (reconstructed) of the particle |
215 | ||
216 | // Choose the cluster energy range | |
217 | ||
c9b2f104 | 218 | Float_t lambda[2] ; |
88cb7938 | 219 | eca->GetElipsAxis(lambda) ; |
c9b2f104 | 220 | |
221 | if((lambda[0]>0.01) && (lambda[1]>0.01)){ | |
222 | // Looking PCA. Define and calculate the data (X), | |
223 | // introduce in the function X2P that gives the components (P). | |
224 | ||
d64c959b | 225 | Float_t spher = 0. ; |
226 | Float_t emaxdtotal = 0. ; | |
c9b2f104 | 227 | |
228 | if((lambda[0]+lambda[1])!=0) | |
d64c959b | 229 | spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]); |
c9b2f104 | 230 | |
d64c959b | 231 | emaxdtotal=eca->GetMaximalEnergy()/eca->GetEnergy(); |
c9b2f104 | 232 | } |
233 | ||
af9bd3cf | 234 | // Float_t time = eca->GetTime() ; |
c9b2f104 | 235 | |
236 | //Set momentum, energy and other parameters | |
af9bd3cf | 237 | Float_t encal = GetCalibratedEnergy(eca->GetEnergy()); |
238 | TVector3 dir = GetMomentumDirection(eca) ; | |
239 | // dir.SetMag(encal) ;Removed to avoid warings !!!!!!!!!!!!!! TO BE REVISED | |
240 | rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ; | |
c9b2f104 | 241 | rp->SetCalcMass(0); |
242 | rp->Name(); //If photon sets the particle pdg name to gamma | |
243 | rp->SetProductionVertex(0,0,0,0); | |
244 | rp->SetFirstMother(-1); | |
245 | rp->SetLastMother(-1); | |
246 | rp->SetFirstDaughter(-1); | |
247 | rp->SetLastDaughter(-1); | |
248 | rp->SetPolarisation(0,0,0); | |
249 | index++ ; | |
250 | } | |
251 | ||
252 | } | |
253 | ||
254 | //____________________________________________________________________________ | |
9e5d2067 | 255 | void AliEMCALPIDv1:: Print(Option_t * /*option*/) const |
c9b2f104 | 256 | { |
257 | // Print the parameters used for the particle type identification | |
258 | ||
fdebddeb | 259 | printf("Print: =============== AliEMCALPID1 ================") ; |
88cb7938 | 260 | printf("Making PID\n"); |
261 | printf(" Pricipal analysis file from 0.5 to 100 %s\n", fFileName.Data() ) ; | |
262 | printf(" Name of parameters file %s\n", fFileNamePar.Data() ) ; | |
c9b2f104 | 263 | } |
264 | ||
7b8d3392 | 265 | //____________________________________________________________________________ |
266 | void AliEMCALPIDv1::Print() const | |
267 | { | |
268 | // Print the parameters used for the particle type identification | |
269 | ||
270 | Info("Print", "=============== AliEMCALPIDv1 ================") ; | |
271 | } | |
272 | ||
c9b2f104 | 273 | //____________________________________________________________________________ |
274 | void AliEMCALPIDv1::PrintRecParticles(Option_t * option) | |
275 | { | |
276 | // Print table of reconstructed particles | |
277 | ||
88cb7938 | 278 | AliEMCALGetter *gime = AliEMCALGetter::Instance() ; |
c9b2f104 | 279 | |
88cb7938 | 280 | TClonesArray * recParticles = gime->RecParticles() ; |
c9b2f104 | 281 | |
fdebddeb | 282 | printf("\nevent %i", gAlice->GetEvNumber()); |
283 | printf(" found %i", recParticles->GetEntriesFast()); | |
284 | printf(" RecParticles\n"); | |
c9b2f104 | 285 | |
286 | if(strstr(option,"all")) { // printing found TS | |
fdebddeb | 287 | printf("\n PARTICLE Index \n"); |
c9b2f104 | 288 | |
289 | Int_t index ; | |
290 | for (index = 0 ; index < recParticles->GetEntries() ; index++) { | |
291 | AliEMCALRecParticle * rp = (AliEMCALRecParticle * ) recParticles->At(index) ; | |
fdebddeb | 292 | printf("\n"); |
293 | printf(rp->Name().Data()); | |
294 | printf(" %i", rp->GetIndexInList()); | |
295 | printf(" %i", rp->GetType()); | |
c9b2f104 | 296 | } |
297 | } | |
c9b2f104 | 298 | } |
299 | ||
88cb7938 | 300 | //____________________________________________________________________________ |
301 | void AliEMCALPIDv1::Unload() | |
302 | { | |
d64c959b | 303 | // Unloads RecPoints, TrackSegments and RecParticles from the folder |
88cb7938 | 304 | AliEMCALGetter * gime = AliEMCALGetter::Instance() ; |
305 | gime->EmcalLoader()->UnloadRecPoints() ; | |
306 | gime->EmcalLoader()->UnloadTracks() ; | |
307 | gime->EmcalLoader()->UnloadRecParticles() ; | |
308 | } | |
309 | ||
310 | //____________________________________________________________________________ | |
9e5d2067 | 311 | void AliEMCALPIDv1::WriteRecParticles() |
88cb7938 | 312 | { |
d64c959b | 313 | // Write RecParticles array to file |
88cb7938 | 314 | AliEMCALGetter *gime = AliEMCALGetter::Instance() ; |
315 | ||
316 | TClonesArray * recParticles = gime->RecParticles() ; | |
317 | recParticles->Expand(recParticles->GetEntriesFast() ) ; | |
318 | TTree * treeP = gime->TreeP() ; | |
c9b2f104 | 319 | |
88cb7938 | 320 | |
321 | ||
322 | //First rp | |
323 | Int_t bufferSize = 32000 ; | |
324 | TBranch * rpBranch = treeP->Branch("EMCALRP",&recParticles,bufferSize); | |
325 | rpBranch->SetTitle(BranchName()); | |
326 | ||
327 | rpBranch->Fill() ; | |
328 | ||
329 | gime->WriteRecParticles("OVERWRITE"); | |
330 | gime->WritePID("OVERWRITE"); | |
331 | ||
332 | } | |
c9b2f104 | 333 |