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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" | |
068e2c00 | 11 | #include "AliAnalysisManager.h" |
1ee39b3a | 12 | |
13 | #include "AliTRDReconstructor.h" | |
14 | #include "AliTRDtrackV1.h" | |
15 | #include "AliTRDseedV1.h" | |
16 | #include "AliTRDpidRefMaker.h" | |
17 | #include "info/AliTRDv0Info.h" | |
a5a3321d | 18 | #include "info/AliTRDpidInfo.h" |
1ee39b3a | 19 | |
20 | ||
21 | // Defines and implements basic functionality for building reference data for TRD PID. | |
22 | // | |
23 | // Here is the list of functionality provided by this class | |
24 | // 1. | |
25 | // 2. | |
26 | // | |
27 | // Authors: | |
28 | // Alex Bercuci <A.Bercuci@gsi.de> | |
29 | // Alex Wilk <wilka@uni-muenster.de> | |
30 | // Markus Fasel <mfasel@gsi.de> | |
31 | // Markus Heide <mheide@uni-muenster.de> | |
32 | // | |
33 | ||
34 | ClassImp(AliTRDpidRefMaker) | |
1ee39b3a | 35 | |
705f8b0a | 36 | //________________________________________________________________________ |
37 | AliTRDpidRefMaker::AliTRDpidRefMaker() | |
38 | :AliTRDrecoTask() | |
39 | ,fReconstructor(NULL) | |
40 | ,fV0s(NULL) | |
41 | ,fData(NULL) | |
42 | ,fInfo(NULL) | |
43 | ,fPIDdataArray(NULL) | |
d80a6a00 | 44 | ,fRefPID(kV0) |
45 | ,fRefP(kRec) | |
705f8b0a | 46 | ,fFreq(1.) |
47 | ,fP(-1.) | |
48 | ,fPthreshold(0.) | |
49 | { | |
50 | // | |
51 | // Default constructor | |
52 | // | |
53 | SetNameTitle("PIDrefMaker", "PID Reference Maker"); | |
54 | } | |
55 | ||
1ee39b3a | 56 | //________________________________________________________________________ |
57 | AliTRDpidRefMaker::AliTRDpidRefMaker(const char *name, const char *title) | |
58 | :AliTRDrecoTask(name, title) | |
b91fdd71 | 59 | ,fReconstructor(NULL) |
60 | ,fV0s(NULL) | |
61 | ,fData(NULL) | |
62 | ,fInfo(NULL) | |
63 | ,fPIDdataArray(NULL) | |
d80a6a00 | 64 | ,fRefPID(kV0) |
65 | ,fRefP(kRec) | |
1ee39b3a | 66 | ,fFreq(1.) |
67 | ,fP(-1.) | |
68 | ,fPthreshold(0.5) | |
69 | { | |
70 | // | |
71 | // Default constructor | |
72 | // | |
73 | ||
74 | fReconstructor = new AliTRDReconstructor(); | |
75 | fReconstructor->SetRecoParam(AliTRDrecoParam::GetLowFluxParam()); | |
76 | memset(fdEdx, 0, 10*sizeof(Float_t)); | |
77 | memset(fPID, 0, AliPID::kSPECIES*sizeof(Float_t)); | |
78 | ||
705f8b0a | 79 | DefineInput(2, TObjArray::Class()); // v0 list |
80 | DefineInput(3, TObjArray::Class()); // pid info list | |
81 | DefineOutput(2, TTree::Class()); | |
1ee39b3a | 82 | } |
83 | ||
84 | ||
85 | //________________________________________________________________________ | |
86 | AliTRDpidRefMaker::~AliTRDpidRefMaker() | |
87 | { | |
88 | if(fPIDdataArray) delete fPIDdataArray; | |
89 | if(fReconstructor) delete fReconstructor; | |
90 | } | |
91 | ||
92 | //________________________________________________________________________ | |
93 | Bool_t AliTRDpidRefMaker::CheckQuality(AliTRDseedV1* /*trklt*/) | |
94 | { | |
95 | // Place holder for checking tracklet quality for PID. | |
96 | return kTRUE; | |
97 | } | |
98 | ||
99 | ||
100 | //________________________________________________________________________ | |
101 | Float_t* AliTRDpidRefMaker::CookdEdx(AliTRDseedV1 *trklt) | |
102 | { | |
103 | trklt->CookdEdx(AliTRDpidUtil::kNNslices); | |
104 | memcpy(fdEdx, trklt->GetdEdx(), AliTRDpidUtil::kNNslices*sizeof(Float_t)); | |
105 | return fdEdx; | |
106 | } | |
107 | ||
108 | ||
1ee39b3a | 109 | //________________________________________________________________________ |
f8f46e4d | 110 | void AliTRDpidRefMaker::UserCreateOutputObjects() |
1ee39b3a | 111 | { |
112 | // Create histograms | |
113 | // Called once | |
114 | ||
1ee39b3a | 115 | fContainer = new TObjArray(); |
116 | fContainer->SetName(Form("Moni%s", GetName())); | |
117 | ||
118 | TH2 *h2 = new TH2I("hPDG","Particle abundance", AliPID::kSPECIES, -0.5, 4.5, AliTRDCalPID::kNMom, -0.5, AliTRDCalPID::kNMom-0.5); | |
119 | TAxis *ax = h2->GetXaxis(); | |
120 | ax->SetNdivisions(505); | |
121 | ax->SetTitle("Particle species"); | |
122 | for(Int_t is=AliPID::kSPECIES; is--;) ax->SetBinLabel(is+1, AliPID::ParticleShortName(is)); | |
123 | h2->GetYaxis()->SetTitle("P bins"); | |
124 | h2->GetYaxis()->SetNdivisions(511); | |
1ee39b3a | 125 | fContainer->AddAt(h2, 0); |
068e2c00 | 126 | PostData(1, fContainer); |
1ee39b3a | 127 | |
265a93da | 128 | OpenFile(2); |
a5a3321d | 129 | fData = new TTree("RefPID", "Reference data for PID"); |
1ee39b3a | 130 | fData->Branch("data", &fPIDdataArray); |
068e2c00 | 131 | PostData(2, fData); |
1ee39b3a | 132 | } |
133 | ||
134 | //________________________________________________________________________ | |
f8f46e4d | 135 | void AliTRDpidRefMaker::UserExec(Option_t *) |
1ee39b3a | 136 | { |
137 | // Main loop | |
138 | // Called for each event | |
068e2c00 | 139 | Int_t ev((Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry()); |
140 | if(!(fTracks = dynamic_cast<TObjArray*>(GetInputData(1)))){ | |
141 | AliDebug(3, Form("Missing tracks container in ev %d", ev)); | |
142 | return; | |
143 | } | |
144 | if(!(fV0s = dynamic_cast<TObjArray*>(GetInputData(2)))){ | |
145 | AliDebug(3, Form("Missing v0 container in ev %d", ev)); | |
146 | return; | |
147 | } | |
148 | if(!(fInfo = dynamic_cast<TObjArray*>(GetInputData(3)))){ | |
149 | AliDebug(3, Form("Missing pid info container in ev %d", ev)); | |
150 | return; | |
151 | } | |
705f8b0a | 152 | |
76106bcc | 153 | AliDebug(1, Form("Entries: Ev[%d] Tracks[%d] V0[%d] PID[%d]", ev, fTracks->GetEntriesFast(), fV0s->GetEntriesFast(), fInfo->GetEntriesFast())); |
b91fdd71 | 154 | AliTRDtrackInfo *track = NULL; |
155 | AliTRDtrackV1 *trackTRD = NULL; | |
156 | AliTrackReference *ref = NULL; | |
157 | const AliTRDtrackInfo::AliESDinfo *infoESD = NULL; | |
1ee39b3a | 158 | for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){ |
159 | track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk); | |
160 | if(!track->HasESDtrack()) continue; | |
161 | trackTRD = track->GetTrack(); | |
162 | infoESD = track->GetESDinfo(); | |
163 | Double32_t *infoPID = infoESD->GetSliceIter(); | |
164 | Int_t n = infoESD->GetNSlices() - AliTRDgeometry::kNlayer; | |
46760dda | 165 | if(n==0){ |
166 | AliWarning(Form("dEdx info missing in ESD track %d", itrk)); | |
167 | continue; | |
168 | } | |
1ee39b3a | 169 | Double32_t *p = &infoPID[n]; |
4226db3e | 170 | 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 | 171 | |
172 | ULong_t status = track->GetStatus(); | |
12e87bd0 | 173 | if(!(status&AliESDtrack::kTRDpid)) continue; |
1ee39b3a | 174 | |
175 | // fill the pid information | |
d80a6a00 | 176 | SetRefPID(fRefPID, track, infoESD, fPID); |
a5a3321d | 177 | // get particle type |
178 | Int_t idx(TMath::LocMax(AliPID::kSPECIES, fPID)); | |
24b3cfb9 | 179 | if(fPID[idx]<1.e-5) continue; |
860a9397 | 180 | |
1ee39b3a | 181 | // prepare PID data array |
182 | if(!fPIDdataArray){ | |
a5a3321d | 183 | fPIDdataArray = new AliTRDpidInfo(); |
1ee39b3a | 184 | } else fPIDdataArray->Reset(); |
a5a3321d | 185 | fPIDdataArray->SetPID(idx); |
1ee39b3a | 186 | |
187 | // fill PID information | |
188 | for(Int_t ily = 0; ily < AliTRDgeometry::kNlayer; ily++){ | |
189 | ||
190 | // fill P & dE/dx information | |
d80a6a00 | 191 | switch(fRefP){ |
192 | case kMC: | |
193 | if(!(ref = track->GetTrackRef(ily))) continue; | |
194 | fP = ref->P(); | |
195 | break; | |
196 | case kRec: | |
197 | fP = p[ily]; | |
198 | break; | |
199 | default: continue; | |
1ee39b3a | 200 | } |
d80a6a00 | 201 | Double32_t *it = &infoPID[ily*AliTRDCalPID::kNSlicesNN]; |
202 | for(Int_t is=AliTRDCalPID::kNSlicesNN; is--; it++) fdEdx[is] = (*it); | |
203 | ||
1ee39b3a | 204 | // momentum threshold |
205 | if(fP < fPthreshold) continue; | |
206 | ||
207 | // store information | |
208 | fPIDdataArray->PushBack(ily, AliTRDpidUtil::GetMomentumBin(fP), fdEdx); | |
209 | } | |
210 | ||
211 | Fill(); | |
212 | } | |
1ee39b3a | 213 | } |
214 | ||
215 | ||
216 | //________________________________________________________________________ | |
217 | void AliTRDpidRefMaker::Fill() | |
218 | { | |
219 | // Fill data tree | |
220 | ||
a5a3321d | 221 | if(!fPIDdataArray->GetNtracklets()) return; |
87c9fc00 | 222 | // Fill data tree |
1ee39b3a | 223 | fData->Fill(); |
224 | ||
225 | ||
226 | // fill monitor | |
a5a3321d | 227 | for(Int_t itrklt=fPIDdataArray->GetNtracklets(); itrklt--;){ |
228 | Int_t pBin = fPIDdataArray->GetData(itrklt)->Momentum(); | |
229 | ((TH2*)fContainer->At(0))->Fill(fPIDdataArray->GetPID(), pBin); | |
1ee39b3a | 230 | } |
231 | } | |
232 | ||
233 | //________________________________________________________________________ | |
234 | void AliTRDpidRefMaker::LinkPIDdata() | |
235 | { | |
236 | // Link data tree to data members | |
1ee39b3a | 237 | fData->SetBranchAddress("data", &fPIDdataArray); |
238 | } | |
239 | ||
240 | //________________________________________________________________________ | |
d80a6a00 | 241 | void AliTRDpidRefMaker::SetRefPID(ETRDpidRefMakerSource select, AliTRDtrackInfo *track, const AliTRDtrackInfo::AliESDinfo *infoESD, Float_t *pid) |
1ee39b3a | 242 | { |
243 | // Fill the reference PID values "pid" from "source" object | |
244 | // according to the option "select". Possible options are | |
245 | // - kV0 - v0 based PID | |
246 | // - kMC - MC truth [default] | |
247 | // - kRec - outside detectors | |
248 | ||
3d19c1b0 | 249 | if(!track){ |
250 | AliError("No trackInfo found"); | |
251 | return; | |
252 | } | |
860a9397 | 253 | memset(pid, 0, AliPID::kSPECIES*sizeof(Float_t)); |
1ee39b3a | 254 | switch(select){ |
255 | case kV0: | |
256 | { | |
d80a6a00 | 257 | //Get V0 PID decisions for all particle species (implemented so far : electrons from conversions, pions from K0s and protons from Lambdas) : |
258 | if(!infoESD->HasV0()) return; | |
259 | const Int_t *v0pid=infoESD->GetV0pid(); | |
860a9397 | 260 | for(Int_t is=AliPID::kSPECIES; is--;){ pid[is] = (Float_t)v0pid[is];} |
1ee39b3a | 261 | } |
262 | break; | |
263 | case kMC: | |
264 | if(!HasMCdata()){ | |
265 | AliError("Could not retrive reference PID from MC"); | |
266 | return; | |
267 | } | |
3d19c1b0 | 268 | switch(track->GetPDG()){ |
269 | case kElectron: | |
270 | case kPositron: | |
860a9397 | 271 | pid[AliPID::kElectron] = 1.; |
3d19c1b0 | 272 | break; |
273 | case kMuonPlus: | |
274 | case kMuonMinus: | |
860a9397 | 275 | pid[AliPID::kMuon] = 1.; |
3d19c1b0 | 276 | break; |
277 | case kPiPlus: | |
278 | case kPiMinus: | |
860a9397 | 279 | pid[AliPID::kPion] = 1.; |
3d19c1b0 | 280 | break; |
281 | case kKPlus: | |
282 | case kKMinus: | |
860a9397 | 283 | pid[AliPID::kKaon] = 1.; |
3d19c1b0 | 284 | break; |
285 | case kProton: | |
286 | case kProtonBar: | |
860a9397 | 287 | pid[AliPID::kProton] = 1.; |
3d19c1b0 | 288 | break; |
1ee39b3a | 289 | } |
290 | break; | |
291 | case kRec: | |
292 | { | |
1ee39b3a | 293 | AliTRDtrackV1 *trackTRD = track->GetTrack(); |
294 | trackTRD -> SetReconstructor(fReconstructor); | |
295 | //fReconstructor -> SetOption("nn"); | |
296 | trackTRD -> CookPID(); | |
297 | for(Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++){ | |
298 | pid[iPart] = trackTRD -> GetPID(iPart); | |
299 | AliDebug(4, Form("PDG is (in V0info) %d %f", iPart, pid[iPart])); | |
300 | } | |
301 | } | |
302 | break; | |
303 | default: | |
304 | AliWarning("PID reference source not implemented"); | |
305 | return; | |
306 | } | |
ca50a37e | 307 | AliDebug(4, Form("Ref PID : %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f] %s[%5.2f]" |
860a9397 | 308 | ,AliPID::ParticleShortName(0), 1.e2*pid[0] |
309 | ,AliPID::ParticleShortName(1), 1.e2*pid[1] | |
310 | ,AliPID::ParticleShortName(2), 1.e2*pid[2] | |
311 | ,AliPID::ParticleShortName(3), 1.e2*pid[3] | |
312 | ,AliPID::ParticleShortName(4), 1.e2*pid[4] | |
1ee39b3a | 313 | )); |
314 | } | |
315 | ||
316 | //________________________________________________________________________ | |
317 | void AliTRDpidRefMaker::SetAbundance(Float_t train) | |
318 | { | |
319 | // Split data sample between trainning and testing | |
320 | ||
321 | if(train<0. || train >1.){ | |
322 | AliWarning("The input data should be in the interval [0, 1]"); | |
323 | return; | |
324 | } | |
325 | ||
326 | fFreq = train; | |
327 | } | |
328 |