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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" | |
a5a3321d | 17 | #include "info/AliTRDpidInfo.h" |
1ee39b3a | 18 | |
19 | ||
20 | // Defines and implements basic functionality for building reference data for TRD PID. | |
21 | // | |
22 | // Here is the list of functionality provided by this class | |
23 | // 1. | |
24 | // 2. | |
25 | // | |
26 | // Authors: | |
27 | // Alex Bercuci <A.Bercuci@gsi.de> | |
28 | // Alex Wilk <wilka@uni-muenster.de> | |
29 | // Markus Fasel <mfasel@gsi.de> | |
30 | // Markus Heide <mheide@uni-muenster.de> | |
31 | // | |
32 | ||
33 | ClassImp(AliTRDpidRefMaker) | |
1ee39b3a | 34 | |
705f8b0a | 35 | //________________________________________________________________________ |
36 | AliTRDpidRefMaker::AliTRDpidRefMaker() | |
37 | :AliTRDrecoTask() | |
38 | ,fReconstructor(NULL) | |
39 | ,fV0s(NULL) | |
40 | ,fData(NULL) | |
41 | ,fInfo(NULL) | |
42 | ,fPIDdataArray(NULL) | |
43 | ,fRefPID(kMC) | |
44 | ,fRefP(kMC) | |
705f8b0a | 45 | ,fFreq(1.) |
46 | ,fP(-1.) | |
47 | ,fPthreshold(0.) | |
48 | { | |
49 | // | |
50 | // Default constructor | |
51 | // | |
52 | SetNameTitle("PIDrefMaker", "PID Reference Maker"); | |
53 | } | |
54 | ||
1ee39b3a | 55 | //________________________________________________________________________ |
56 | AliTRDpidRefMaker::AliTRDpidRefMaker(const char *name, const char *title) | |
57 | :AliTRDrecoTask(name, title) | |
b91fdd71 | 58 | ,fReconstructor(NULL) |
59 | ,fV0s(NULL) | |
60 | ,fData(NULL) | |
61 | ,fInfo(NULL) | |
62 | ,fPIDdataArray(NULL) | |
1ee39b3a | 63 | ,fRefPID(kMC) |
64 | ,fRefP(kMC) | |
1ee39b3a | 65 | ,fFreq(1.) |
66 | ,fP(-1.) | |
67 | ,fPthreshold(0.5) | |
68 | { | |
69 | // | |
70 | // Default constructor | |
71 | // | |
72 | ||
73 | fReconstructor = new AliTRDReconstructor(); | |
74 | fReconstructor->SetRecoParam(AliTRDrecoParam::GetLowFluxParam()); | |
75 | memset(fdEdx, 0, 10*sizeof(Float_t)); | |
76 | memset(fPID, 0, AliPID::kSPECIES*sizeof(Float_t)); | |
77 | ||
705f8b0a | 78 | DefineInput(2, TObjArray::Class()); // v0 list |
79 | DefineInput(3, TObjArray::Class()); // pid info list | |
80 | DefineOutput(2, TTree::Class()); | |
1ee39b3a | 81 | } |
82 | ||
83 | ||
84 | //________________________________________________________________________ | |
85 | AliTRDpidRefMaker::~AliTRDpidRefMaker() | |
86 | { | |
87 | if(fPIDdataArray) delete fPIDdataArray; | |
88 | if(fReconstructor) delete fReconstructor; | |
89 | } | |
90 | ||
91 | //________________________________________________________________________ | |
92 | Bool_t AliTRDpidRefMaker::CheckQuality(AliTRDseedV1* /*trklt*/) | |
93 | { | |
94 | // Place holder for checking tracklet quality for PID. | |
95 | return kTRUE; | |
96 | } | |
97 | ||
98 | ||
99 | //________________________________________________________________________ | |
100 | Float_t* AliTRDpidRefMaker::CookdEdx(AliTRDseedV1 *trklt) | |
101 | { | |
102 | trklt->CookdEdx(AliTRDpidUtil::kNNslices); | |
103 | memcpy(fdEdx, trklt->GetdEdx(), AliTRDpidUtil::kNNslices*sizeof(Float_t)); | |
104 | return fdEdx; | |
105 | } | |
106 | ||
107 | ||
1ee39b3a | 108 | //________________________________________________________________________ |
f8f46e4d | 109 | void AliTRDpidRefMaker::UserCreateOutputObjects() |
1ee39b3a | 110 | { |
111 | // Create histograms | |
112 | // Called once | |
113 | ||
1ee39b3a | 114 | fContainer = new TObjArray(); |
115 | fContainer->SetName(Form("Moni%s", GetName())); | |
116 | ||
117 | TH2 *h2 = new TH2I("hPDG","Particle abundance", AliPID::kSPECIES, -0.5, 4.5, AliTRDCalPID::kNMom, -0.5, AliTRDCalPID::kNMom-0.5); | |
118 | TAxis *ax = h2->GetXaxis(); | |
119 | ax->SetNdivisions(505); | |
120 | ax->SetTitle("Particle species"); | |
121 | for(Int_t is=AliPID::kSPECIES; is--;) ax->SetBinLabel(is+1, AliPID::ParticleShortName(is)); | |
122 | h2->GetYaxis()->SetTitle("P bins"); | |
123 | h2->GetYaxis()->SetNdivisions(511); | |
1ee39b3a | 124 | fContainer->AddAt(h2, 0); |
125 | ||
265a93da | 126 | OpenFile(2); |
a5a3321d | 127 | fData = new TTree("RefPID", "Reference data for PID"); |
1ee39b3a | 128 | fData->Branch("data", &fPIDdataArray); |
129 | } | |
130 | ||
131 | //________________________________________________________________________ | |
f8f46e4d | 132 | void AliTRDpidRefMaker::UserExec(Option_t *) |
1ee39b3a | 133 | { |
134 | // Main loop | |
135 | // Called for each event | |
136 | ||
87c9fc00 | 137 | if(!(fTracks = dynamic_cast<TObjArray*>(GetInputData(1)))) return; |
138 | if(!(fV0s = dynamic_cast<TObjArray*>(GetInputData(2)))) return; | |
139 | if(!(fInfo = dynamic_cast<TObjArray*>(GetInputData(3)))) return; | |
705f8b0a | 140 | |
a5a3321d | 141 | AliDebug(1, Form("Entries: Tracks[%d] V0[%d] PID[%d]", fTracks->GetEntriesFast(), fV0s->GetEntriesFast(), fInfo->GetEntriesFast())); |
b91fdd71 | 142 | AliTRDtrackInfo *track = NULL; |
143 | AliTRDtrackV1 *trackTRD = NULL; | |
144 | AliTrackReference *ref = NULL; | |
145 | const AliTRDtrackInfo::AliESDinfo *infoESD = NULL; | |
1ee39b3a | 146 | for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){ |
147 | track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk); | |
148 | if(!track->HasESDtrack()) continue; | |
149 | trackTRD = track->GetTrack(); | |
150 | infoESD = track->GetESDinfo(); | |
151 | Double32_t *infoPID = infoESD->GetSliceIter(); | |
152 | Int_t n = infoESD->GetNSlices() - AliTRDgeometry::kNlayer; | |
46760dda | 153 | if(n==0){ |
154 | AliWarning(Form("dEdx info missing in ESD track %d", itrk)); | |
155 | continue; | |
156 | } | |
1ee39b3a | 157 | Double32_t *p = &infoPID[n]; |
4226db3e | 158 | 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 | 159 | |
160 | ULong_t status = track->GetStatus(); | |
12e87bd0 | 161 | if(!(status&AliESDtrack::kTRDpid)) continue; |
1ee39b3a | 162 | |
163 | // fill the pid information | |
164 | SetRefPID(fRefPID, track, fPID); | |
a5a3321d | 165 | // get particle type |
166 | Int_t idx(TMath::LocMax(AliPID::kSPECIES, fPID)); | |
24b3cfb9 | 167 | if(fPID[idx]<1.e-5) continue; |
1ee39b3a | 168 | |
169 | // prepare PID data array | |
170 | if(!fPIDdataArray){ | |
a5a3321d | 171 | fPIDdataArray = new AliTRDpidInfo(); |
1ee39b3a | 172 | } else fPIDdataArray->Reset(); |
a5a3321d | 173 | fPIDdataArray->SetPID(idx); |
1ee39b3a | 174 | |
175 | // fill PID information | |
176 | for(Int_t ily = 0; ily < AliTRDgeometry::kNlayer; ily++){ | |
177 | ||
178 | // fill P & dE/dx information | |
179 | if(HasFriends()){ // from TRD track | |
180 | if(!trackTRD) continue; | |
b91fdd71 | 181 | AliTRDseedV1 *trackletTRD(NULL); |
1ee39b3a | 182 | trackTRD -> SetReconstructor(fReconstructor); |
183 | if(!(trackletTRD = trackTRD -> GetTracklet(ily))) continue; | |
184 | if(!CheckQuality(trackletTRD)) continue; | |
185 | if(!CookdEdx(trackletTRD)) continue; | |
186 | ||
187 | // fill momentum information | |
188 | fP = 0.; | |
189 | switch(fRefP){ | |
190 | case kMC: | |
191 | if(!(ref = track->GetTrackRef(trackletTRD))) continue; | |
192 | fP = ref->P(); | |
193 | break; | |
194 | case kRec: | |
195 | fP = trackletTRD->GetMomentum(); | |
196 | break; | |
197 | default: continue; | |
198 | } | |
199 | } else { // from ESD track | |
200 | // fill momentum information | |
201 | switch(fRefP){ | |
202 | case kMC: | |
203 | if(!(ref = track->GetTrackRef(ily))) continue; | |
204 | fP = ref->P(); | |
205 | break; | |
206 | case kRec: | |
207 | fP = p[ily]; | |
208 | break; | |
209 | default: continue; | |
210 | } | |
211 | Double32_t *it = &infoPID[ily*AliTRDCalPID::kNSlicesNN]; | |
212 | for(Int_t is=AliTRDCalPID::kNSlicesNN; is--; it++) fdEdx[is] = (*it); | |
213 | } | |
214 | ||
215 | // momentum threshold | |
216 | if(fP < fPthreshold) continue; | |
217 | ||
218 | // store information | |
219 | fPIDdataArray->PushBack(ily, AliTRDpidUtil::GetMomentumBin(fP), fdEdx); | |
220 | } | |
221 | ||
222 | Fill(); | |
223 | } | |
224 | ||
f8f46e4d | 225 | PostData(1, fContainer); |
226 | PostData(2, fData); | |
1ee39b3a | 227 | } |
228 | ||
229 | ||
230 | //________________________________________________________________________ | |
231 | void AliTRDpidRefMaker::Fill() | |
232 | { | |
233 | // Fill data tree | |
234 | ||
a5a3321d | 235 | if(!fPIDdataArray->GetNtracklets()) return; |
87c9fc00 | 236 | // Fill data tree |
1ee39b3a | 237 | fData->Fill(); |
238 | ||
239 | ||
240 | // fill monitor | |
a5a3321d | 241 | for(Int_t itrklt=fPIDdataArray->GetNtracklets(); itrklt--;){ |
242 | Int_t pBin = fPIDdataArray->GetData(itrklt)->Momentum(); | |
243 | ((TH2*)fContainer->At(0))->Fill(fPIDdataArray->GetPID(), pBin); | |
1ee39b3a | 244 | } |
245 | } | |
246 | ||
247 | //________________________________________________________________________ | |
248 | void AliTRDpidRefMaker::LinkPIDdata() | |
249 | { | |
250 | // Link data tree to data members | |
1ee39b3a | 251 | fData->SetBranchAddress("data", &fPIDdataArray); |
252 | } | |
253 | ||
254 | //________________________________________________________________________ | |
3d19c1b0 | 255 | void AliTRDpidRefMaker::SetRefPID(ETRDpidRefMakerSource select, AliTRDtrackInfo *track, Float_t *pid) |
1ee39b3a | 256 | { |
257 | // Fill the reference PID values "pid" from "source" object | |
258 | // according to the option "select". Possible options are | |
259 | // - kV0 - v0 based PID | |
260 | // - kMC - MC truth [default] | |
261 | // - kRec - outside detectors | |
262 | ||
3d19c1b0 | 263 | if(!track){ |
264 | AliError("No trackInfo found"); | |
265 | return; | |
266 | } | |
1ee39b3a | 267 | memset(fPID, 0, AliPID::kSPECIES*sizeof(Float_t)); |
268 | switch(select){ | |
269 | case kV0: | |
270 | { | |
1ee39b3a | 271 | //Get V0 PID decisions from the AliTRDv0Info for all particle species (implemented so far : electrons from conversions, pions from K0s and protons from Lambdas) : |
3d19c1b0 | 272 | AliTRDv0Info *v0(NULL); |
273 | for(Int_t iv(0); iv<fV0s->GetEntriesFast(); iv++){ | |
274 | if(!(v0 = (AliTRDv0Info*)fV0s->At(iv))) continue; | |
275 | if(!v0->HasTrack(track)) continue; | |
276 | for(Int_t is=AliPID::kSPECIES; is--;) fPID[is] = v0->GetPID(is, track); | |
277 | break; | |
278 | } | |
1ee39b3a | 279 | } |
280 | break; | |
281 | case kMC: | |
282 | if(!HasMCdata()){ | |
283 | AliError("Could not retrive reference PID from MC"); | |
284 | return; | |
285 | } | |
3d19c1b0 | 286 | switch(track->GetPDG()){ |
287 | case kElectron: | |
288 | case kPositron: | |
289 | fPID[AliPID::kElectron] = 1.; | |
290 | break; | |
291 | case kMuonPlus: | |
292 | case kMuonMinus: | |
293 | fPID[AliPID::kMuon] = 1.; | |
294 | break; | |
295 | case kPiPlus: | |
296 | case kPiMinus: | |
297 | fPID[AliPID::kPion] = 1.; | |
298 | break; | |
299 | case kKPlus: | |
300 | case kKMinus: | |
301 | fPID[AliPID::kKaon] = 1.; | |
302 | break; | |
303 | case kProton: | |
304 | case kProtonBar: | |
305 | fPID[AliPID::kProton] = 1.; | |
306 | break; | |
1ee39b3a | 307 | } |
308 | break; | |
309 | case kRec: | |
310 | { | |
1ee39b3a | 311 | AliTRDtrackV1 *trackTRD = track->GetTrack(); |
312 | trackTRD -> SetReconstructor(fReconstructor); | |
313 | //fReconstructor -> SetOption("nn"); | |
314 | trackTRD -> CookPID(); | |
315 | for(Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++){ | |
316 | pid[iPart] = trackTRD -> GetPID(iPart); | |
317 | AliDebug(4, Form("PDG is (in V0info) %d %f", iPart, pid[iPart])); | |
318 | } | |
319 | } | |
320 | break; | |
321 | default: | |
322 | AliWarning("PID reference source not implemented"); | |
323 | return; | |
324 | } | |
ca50a37e | 325 | AliDebug(4, Form("Ref PID : %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f]" |
1ee39b3a | 326 | ,AliPID::ParticleShortName(0), 1.e2*fPID[0] |
327 | ,AliPID::ParticleShortName(1), 1.e2*fPID[1] | |
328 | ,AliPID::ParticleShortName(2), 1.e2*fPID[2] | |
329 | ,AliPID::ParticleShortName(3), 1.e2*fPID[3] | |
330 | ,AliPID::ParticleShortName(4), 1.e2*fPID[4] | |
331 | )); | |
332 | } | |
333 | ||
334 | //________________________________________________________________________ | |
335 | void AliTRDpidRefMaker::SetAbundance(Float_t train) | |
336 | { | |
337 | // Split data sample between trainning and testing | |
338 | ||
339 | if(train<0. || train >1.){ | |
340 | AliWarning("The input data should be in the interval [0, 1]"); | |
341 | return; | |
342 | } | |
343 | ||
344 | fFreq = train; | |
345 | } | |
346 |