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1ee39b3a | 1 | #include "TPDGCode.h" |
2 | #include "TFile.h" | |
3 | #include "TTree.h" | |
4 | #include "TEventList.h" | |
5 | #include "TObjArray.h" | |
6 | #include "TH2.h" | |
7 | ||
8 | #include "AliLog.h" | |
9 | #include "AliESDtrack.h" | |
10 | #include "AliTrackReference.h" | |
11 | ||
12 | #include "AliTRDReconstructor.h" | |
13 | #include "AliTRDtrackV1.h" | |
14 | #include "AliTRDseedV1.h" | |
15 | #include "AliTRDpidRefMaker.h" | |
16 | #include "info/AliTRDv0Info.h" | |
17 | ||
18 | ||
19 | // Defines and implements basic functionality for building reference data for TRD PID. | |
20 | // | |
21 | // Here is the list of functionality provided by this class | |
22 | // 1. | |
23 | // 2. | |
24 | // | |
25 | // Authors: | |
26 | // Alex Bercuci <A.Bercuci@gsi.de> | |
27 | // Alex Wilk <wilka@uni-muenster.de> | |
28 | // Markus Fasel <mfasel@gsi.de> | |
29 | // Markus Heide <mheide@uni-muenster.de> | |
30 | // | |
31 | ||
32 | ClassImp(AliTRDpidRefMaker) | |
33 | ClassImp(AliTRDpidRefMaker::AliTRDpidRefData) | |
34 | ClassImp(AliTRDpidRefMaker::AliTRDpidRefDataArray) | |
35 | ||
36 | //________________________________________________________________________ | |
37 | AliTRDpidRefMaker::AliTRDpidRefDataArray::AliTRDpidRefDataArray() : | |
38 | fNtracklets(0) | |
b91fdd71 | 39 | ,fData(NULL) |
1ee39b3a | 40 | { |
41 | // Constructor of data array | |
42 | fData = new AliTRDpidRefData[AliTRDgeometry::kNlayer]; | |
43 | } | |
44 | ||
45 | //________________________________________________________________________ | |
46 | AliTRDpidRefMaker::AliTRDpidRefDataArray::~AliTRDpidRefDataArray() | |
47 | { | |
48 | // Destructor | |
49 | delete [] fData; | |
50 | } | |
51 | ||
52 | //________________________________________________________________________ | |
53 | void AliTRDpidRefMaker::AliTRDpidRefDataArray::PushBack(Int_t ly, Int_t p, Float_t *dedx) | |
54 | { | |
55 | // Add PID data to the end of the array | |
56 | fData[fNtracklets].fPLbin= (ly<<4) | (p&0xf); | |
57 | memcpy(fData[fNtracklets].fdEdx, dedx, 8*sizeof(Float_t)); | |
58 | fNtracklets++; | |
59 | } | |
60 | ||
61 | //________________________________________________________________________ | |
62 | void AliTRDpidRefMaker::AliTRDpidRefDataArray::Reset() | |
63 | { | |
64 | // Reset content | |
65 | ||
66 | if(!fNtracklets) return; | |
67 | while(fNtracklets--){ | |
68 | fData[fNtracklets].fPLbin = 0xff; | |
69 | memset(fData[fNtracklets].fdEdx, 0, 8*sizeof(Float_t)); | |
70 | } | |
71 | fNtracklets=0; | |
72 | } | |
73 | ||
74 | //________________________________________________________________________ | |
75 | AliTRDpidRefMaker::AliTRDpidRefMaker(const char *name, const char *title) | |
76 | :AliTRDrecoTask(name, title) | |
b91fdd71 | 77 | ,fReconstructor(NULL) |
78 | ,fV0s(NULL) | |
79 | ,fData(NULL) | |
80 | ,fInfo(NULL) | |
81 | ,fPIDdataArray(NULL) | |
1ee39b3a | 82 | ,fRefPID(kMC) |
83 | ,fRefP(kMC) | |
84 | ,fPIDbin(0xff) | |
85 | ,fFreq(1.) | |
86 | ,fP(-1.) | |
87 | ,fPthreshold(0.5) | |
88 | { | |
89 | // | |
90 | // Default constructor | |
91 | // | |
92 | ||
93 | fReconstructor = new AliTRDReconstructor(); | |
94 | fReconstructor->SetRecoParam(AliTRDrecoParam::GetLowFluxParam()); | |
95 | memset(fdEdx, 0, 10*sizeof(Float_t)); | |
96 | memset(fPID, 0, AliPID::kSPECIES*sizeof(Float_t)); | |
97 | ||
98 | DefineInput(1, TObjArray::Class()); | |
b91fdd71 | 99 | DefineInput(2, TObjArray::Class()); |
1ee39b3a | 100 | DefineOutput(1, TTree::Class()); |
101 | } | |
102 | ||
103 | ||
104 | //________________________________________________________________________ | |
105 | AliTRDpidRefMaker::~AliTRDpidRefMaker() | |
106 | { | |
107 | if(fPIDdataArray) delete fPIDdataArray; | |
108 | if(fReconstructor) delete fReconstructor; | |
109 | } | |
110 | ||
111 | //________________________________________________________________________ | |
112 | Bool_t AliTRDpidRefMaker::CheckQuality(AliTRDseedV1* /*trklt*/) | |
113 | { | |
114 | // Place holder for checking tracklet quality for PID. | |
115 | return kTRUE; | |
116 | } | |
117 | ||
118 | ||
119 | //________________________________________________________________________ | |
120 | Float_t* AliTRDpidRefMaker::CookdEdx(AliTRDseedV1 *trklt) | |
121 | { | |
122 | trklt->CookdEdx(AliTRDpidUtil::kNNslices); | |
123 | memcpy(fdEdx, trklt->GetdEdx(), AliTRDpidUtil::kNNslices*sizeof(Float_t)); | |
124 | return fdEdx; | |
125 | } | |
126 | ||
127 | ||
128 | //________________________________________________________________________ | |
129 | void AliTRDpidRefMaker::ConnectInputData(Option_t *opt) | |
130 | { | |
131 | AliTRDrecoTask::ConnectInputData(opt); | |
b91fdd71 | 132 | fV0s = dynamic_cast<TObjArray*>(GetInputData(1)); |
133 | fInfo = dynamic_cast<TObjArray*>(GetInputData(2)); | |
134 | } | |
1ee39b3a | 135 | |
136 | //________________________________________________________________________ | |
137 | void AliTRDpidRefMaker::CreateOutputObjects() | |
138 | { | |
139 | // Create histograms | |
140 | // Called once | |
141 | ||
142 | OpenFile(0, "RECREATE"); | |
143 | fContainer = new TObjArray(); | |
144 | fContainer->SetName(Form("Moni%s", GetName())); | |
145 | ||
146 | TH2 *h2 = new TH2I("hPDG","Particle abundance", AliPID::kSPECIES, -0.5, 4.5, AliTRDCalPID::kNMom, -0.5, AliTRDCalPID::kNMom-0.5); | |
147 | TAxis *ax = h2->GetXaxis(); | |
148 | ax->SetNdivisions(505); | |
149 | ax->SetTitle("Particle species"); | |
150 | for(Int_t is=AliPID::kSPECIES; is--;) ax->SetBinLabel(is+1, AliPID::ParticleShortName(is)); | |
151 | h2->GetYaxis()->SetTitle("P bins"); | |
152 | h2->GetYaxis()->SetNdivisions(511); | |
153 | ||
154 | fContainer->AddAt(h2, 0); | |
155 | ||
156 | fData = new TTree(GetName(), Form("Reference data for %s", GetName())); | |
157 | fData->Branch("s", &fPIDbin, "s/b"); | |
158 | fData->Branch("data", &fPIDdataArray); | |
159 | } | |
160 | ||
161 | //________________________________________________________________________ | |
162 | void AliTRDpidRefMaker::Exec(Option_t *) | |
163 | { | |
164 | // Main loop | |
165 | // Called for each event | |
166 | ||
b91fdd71 | 167 | AliTRDtrackInfo *track = NULL; |
168 | AliTRDtrackV1 *trackTRD = NULL; | |
169 | AliTrackReference *ref = NULL; | |
170 | const AliTRDtrackInfo::AliESDinfo *infoESD = NULL; | |
1ee39b3a | 171 | for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){ |
172 | track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk); | |
173 | if(!track->HasESDtrack()) continue; | |
174 | trackTRD = track->GetTrack(); | |
175 | infoESD = track->GetESDinfo(); | |
176 | Double32_t *infoPID = infoESD->GetSliceIter(); | |
177 | Int_t n = infoESD->GetNSlices() - AliTRDgeometry::kNlayer; | |
178 | Double32_t *p = &infoPID[n]; | |
4226db3e | 179 | AliDebug(4, Form("n[%d] p[GeV/c]{%6.2f %6.2f %6.2f %6.2f %6.2f %6.2f}", n, p[0], p[1], p[2], p[3], p[4], p[5])); |
1ee39b3a | 180 | |
181 | ULong_t status = track->GetStatus(); | |
182 | if(!(status&AliESDtrack::kTPCout)) continue; | |
183 | ||
184 | // fill the pid information | |
185 | SetRefPID(fRefPID, track, fPID); | |
186 | ||
187 | // prepare PID data array | |
188 | if(!fPIDdataArray){ | |
189 | fPIDdataArray = new AliTRDpidRefDataArray(); | |
190 | } else fPIDdataArray->Reset(); | |
191 | ||
192 | // fill PID information | |
193 | for(Int_t ily = 0; ily < AliTRDgeometry::kNlayer; ily++){ | |
194 | ||
195 | // fill P & dE/dx information | |
196 | if(HasFriends()){ // from TRD track | |
197 | if(!trackTRD) continue; | |
b91fdd71 | 198 | AliTRDseedV1 *trackletTRD(NULL); |
1ee39b3a | 199 | trackTRD -> SetReconstructor(fReconstructor); |
200 | if(!(trackletTRD = trackTRD -> GetTracklet(ily))) continue; | |
201 | if(!CheckQuality(trackletTRD)) continue; | |
202 | if(!CookdEdx(trackletTRD)) continue; | |
203 | ||
204 | // fill momentum information | |
205 | fP = 0.; | |
206 | switch(fRefP){ | |
207 | case kMC: | |
208 | if(!(ref = track->GetTrackRef(trackletTRD))) continue; | |
209 | fP = ref->P(); | |
210 | break; | |
211 | case kRec: | |
212 | fP = trackletTRD->GetMomentum(); | |
213 | break; | |
214 | default: continue; | |
215 | } | |
216 | } else { // from ESD track | |
217 | // fill momentum information | |
218 | switch(fRefP){ | |
219 | case kMC: | |
220 | if(!(ref = track->GetTrackRef(ily))) continue; | |
221 | fP = ref->P(); | |
222 | break; | |
223 | case kRec: | |
224 | fP = p[ily]; | |
225 | break; | |
226 | default: continue; | |
227 | } | |
228 | Double32_t *it = &infoPID[ily*AliTRDCalPID::kNSlicesNN]; | |
229 | for(Int_t is=AliTRDCalPID::kNSlicesNN; is--; it++) fdEdx[is] = (*it); | |
230 | } | |
231 | ||
232 | // momentum threshold | |
233 | if(fP < fPthreshold) continue; | |
234 | ||
235 | // store information | |
236 | fPIDdataArray->PushBack(ily, AliTRDpidUtil::GetMomentumBin(fP), fdEdx); | |
237 | } | |
238 | ||
239 | Fill(); | |
240 | } | |
241 | ||
242 | PostData(0, fContainer); | |
243 | PostData(1, fData); | |
244 | } | |
245 | ||
246 | ||
247 | //________________________________________________________________________ | |
248 | void AliTRDpidRefMaker::Fill() | |
249 | { | |
250 | // Fill data tree | |
251 | ||
252 | if(!fPIDdataArray->fNtracklets) return; | |
253 | fPIDbin = TMath::LocMax(AliPID::kSPECIES, fPID); // get particle type | |
254 | // Fill data tree | |
255 | fData->Fill(); | |
256 | ||
257 | ||
258 | // fill monitor | |
259 | for(Int_t ily=fPIDdataArray->fNtracklets; ily--;){ | |
260 | Int_t pBin = fPIDdataArray->fData[ily].fPLbin & 0xf; | |
261 | ((TH2*)fContainer->At(0))->Fill(fPIDbin, pBin); | |
262 | } | |
263 | } | |
264 | ||
265 | //________________________________________________________________________ | |
266 | void AliTRDpidRefMaker::LinkPIDdata() | |
267 | { | |
268 | // Link data tree to data members | |
269 | fData->SetBranchAddress("s", &fPIDbin); | |
270 | fData->SetBranchAddress("data", &fPIDdataArray); | |
271 | } | |
272 | ||
273 | //________________________________________________________________________ | |
274 | void AliTRDpidRefMaker::SetRefPID(ETRDpidRefMakerSource select, void *source, Float_t *pid) | |
275 | { | |
276 | // Fill the reference PID values "pid" from "source" object | |
277 | // according to the option "select". Possible options are | |
278 | // - kV0 - v0 based PID | |
279 | // - kMC - MC truth [default] | |
280 | // - kRec - outside detectors | |
281 | ||
282 | ||
283 | memset(fPID, 0, AliPID::kSPECIES*sizeof(Float_t)); | |
284 | switch(select){ | |
285 | case kV0: | |
286 | { | |
287 | AliTRDtrackInfo *track = static_cast<AliTRDtrackInfo*>(source); | |
288 | if(!track){ | |
289 | AliError("No trackInfo found"); | |
290 | return; | |
291 | } | |
292 | ||
293 | //Get V0 PID decisions from the AliTRDv0Info for all particle species (implemented so far : electrons from conversions, pions from K0s and protons from Lambdas) : | |
294 | AliTRDv0Info v0; | |
295 | for(Int_t is=AliPID::kSPECIES; is--;) fPID[is] = v0.GetV0PID(is, track); | |
296 | } | |
297 | break; | |
298 | case kMC: | |
299 | if(!HasMCdata()){ | |
300 | AliError("Could not retrive reference PID from MC"); | |
301 | return; | |
302 | } | |
303 | { | |
304 | AliTRDtrackInfo *track = static_cast<AliTRDtrackInfo*>(source); | |
305 | switch(track->GetPDG()){ | |
306 | case kElectron: | |
307 | case kPositron: | |
308 | fPID[AliPID::kElectron] = 1.; | |
309 | break; | |
310 | case kMuonPlus: | |
311 | case kMuonMinus: | |
312 | fPID[AliPID::kMuon] = 1.; | |
313 | break; | |
314 | case kPiPlus: | |
315 | case kPiMinus: | |
316 | fPID[AliPID::kPion] = 1.; | |
317 | break; | |
318 | case kKPlus: | |
319 | case kKMinus: | |
320 | fPID[AliPID::kKaon] = 1.; | |
321 | break; | |
322 | case kProton: | |
323 | case kProtonBar: | |
324 | fPID[AliPID::kProton] = 1.; | |
325 | break; | |
326 | } | |
327 | } | |
328 | break; | |
329 | case kRec: | |
330 | { | |
331 | AliTRDtrackInfo *track = static_cast<AliTRDtrackInfo*>(source); | |
332 | AliTRDtrackV1 *trackTRD = track->GetTrack(); | |
333 | trackTRD -> SetReconstructor(fReconstructor); | |
334 | //fReconstructor -> SetOption("nn"); | |
335 | trackTRD -> CookPID(); | |
336 | for(Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++){ | |
337 | pid[iPart] = trackTRD -> GetPID(iPart); | |
338 | AliDebug(4, Form("PDG is (in V0info) %d %f", iPart, pid[iPart])); | |
339 | } | |
340 | } | |
341 | break; | |
342 | default: | |
343 | AliWarning("PID reference source not implemented"); | |
344 | return; | |
345 | } | |
346 | AliDebug(4, Form("Ref PID [%] : %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f]" | |
347 | ,AliPID::ParticleShortName(0), 1.e2*fPID[0] | |
348 | ,AliPID::ParticleShortName(1), 1.e2*fPID[1] | |
349 | ,AliPID::ParticleShortName(2), 1.e2*fPID[2] | |
350 | ,AliPID::ParticleShortName(3), 1.e2*fPID[3] | |
351 | ,AliPID::ParticleShortName(4), 1.e2*fPID[4] | |
352 | )); | |
353 | } | |
354 | ||
355 | //________________________________________________________________________ | |
356 | void AliTRDpidRefMaker::SetAbundance(Float_t train) | |
357 | { | |
358 | // Split data sample between trainning and testing | |
359 | ||
360 | if(train<0. || train >1.){ | |
361 | AliWarning("The input data should be in the interval [0, 1]"); | |
362 | return; | |
363 | } | |
364 | ||
365 | fFreq = train; | |
366 | } | |
367 |