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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: AliPIDResponse.cxx 46193 2010-12-21 09:00:14Z wiechula $ */ | |
17 | ||
18 | //----------------------------------------------------------------- | |
19 | // Base class for handling the pid response // | |
20 | // functions of all detectors // | |
21 | // and give access to the nsigmas // | |
22 | // // | |
23 | // Origin: Jens Wiechula, Uni Tuebingen, jens.wiechula@cern.ch // | |
24 | //----------------------------------------------------------------- | |
25 | ||
26 | #include <TList.h> | |
27 | #include <TObjArray.h> | |
28 | #include <TPRegexp.h> | |
29 | #include <TF1.h> | |
30 | #include <TSpline.h> | |
31 | #include <TFile.h> | |
32 | ||
33 | #include <AliVEvent.h> | |
34 | #include <AliVTrack.h> | |
35 | #include <AliLog.h> | |
36 | #include <AliPID.h> | |
37 | #include <AliOADBContainer.h> | |
38 | #include <AliTRDPIDReference.h> | |
39 | ||
40 | #include "AliPIDResponse.h" | |
41 | ||
42 | ClassImp(AliPIDResponse); | |
43 | ||
44 | AliPIDResponse::AliPIDResponse(Bool_t isMC/*=kFALSE*/) : | |
45 | TNamed("PIDResponse","PIDResponse"), | |
46 | fITSResponse(isMC), | |
47 | fTPCResponse(), | |
48 | fTRDResponse(), | |
49 | fTOFResponse(), | |
50 | fEMCALResponse(), | |
51 | fRange(5.), | |
52 | fITSPIDmethod(kITSTruncMean), | |
53 | fIsMC(isMC), | |
54 | fOADBPath(), | |
55 | fBeamType("PP"), | |
56 | fLHCperiod(), | |
57 | fMCperiodTPC(), | |
58 | fMCperiodUser(), | |
59 | fCurrentFile(), | |
60 | fRecoPass(0), | |
61 | fRecoPassUser(-1), | |
62 | fRun(0), | |
63 | fOldRun(0), | |
64 | fArrPidResponseMaster(0x0), | |
65 | fResolutionCorrection(0x0), | |
66 | fTRDPIDParams(0x0), | |
67 | fTRDPIDReference(0x0), | |
68 | fTOFTimeZeroType(kBest_T0), | |
69 | fTOFres(100.), | |
70 | fCurrentEvent(0x0) | |
71 | { | |
72 | // | |
73 | // default ctor | |
74 | // | |
75 | AliLog::SetClassDebugLevel("AliPIDResponse",10); | |
76 | AliLog::SetClassDebugLevel("AliESDpid",10); | |
77 | AliLog::SetClassDebugLevel("AliAODpidUtil",10); | |
78 | ||
79 | memset(fTRDslicesForPID,0,sizeof(UInt_t)*2); | |
80 | } | |
81 | ||
82 | //______________________________________________________________________________ | |
83 | AliPIDResponse::~AliPIDResponse() | |
84 | { | |
85 | // | |
86 | // dtor | |
87 | // | |
88 | delete fArrPidResponseMaster; | |
89 | delete fTRDPIDParams; | |
90 | delete fTRDPIDReference; | |
91 | } | |
92 | ||
93 | //______________________________________________________________________________ | |
94 | AliPIDResponse::AliPIDResponse(const AliPIDResponse &other) : | |
95 | TNamed(other), | |
96 | fITSResponse(other.fITSResponse), | |
97 | fTPCResponse(other.fTPCResponse), | |
98 | fTRDResponse(other.fTRDResponse), | |
99 | fTOFResponse(other.fTOFResponse), | |
100 | fEMCALResponse(other.fEMCALResponse), | |
101 | fRange(other.fRange), | |
102 | fITSPIDmethod(other.fITSPIDmethod), | |
103 | fIsMC(other.fIsMC), | |
104 | fOADBPath(other.fOADBPath), | |
105 | fBeamType("PP"), | |
106 | fLHCperiod(), | |
107 | fMCperiodTPC(), | |
108 | fMCperiodUser(other.fMCperiodUser), | |
109 | fCurrentFile(), | |
110 | fRecoPass(0), | |
111 | fRecoPassUser(other.fRecoPassUser), | |
112 | fRun(0), | |
113 | fOldRun(0), | |
114 | fArrPidResponseMaster(0x0), | |
115 | fResolutionCorrection(0x0), | |
116 | fTRDPIDParams(0x0), | |
117 | fTRDPIDReference(0x0), | |
118 | fTOFTimeZeroType(AliPIDResponse::kBest_T0), | |
119 | fTOFres(100.), | |
120 | fCurrentEvent(0x0) | |
121 | { | |
122 | // | |
123 | // copy ctor | |
124 | // | |
125 | memset(fTRDslicesForPID,0,sizeof(UInt_t)*2); | |
126 | } | |
127 | ||
128 | //______________________________________________________________________________ | |
129 | AliPIDResponse& AliPIDResponse::operator=(const AliPIDResponse &other) | |
130 | { | |
131 | // | |
132 | // copy ctor | |
133 | // | |
134 | if(this!=&other) { | |
135 | delete fArrPidResponseMaster; | |
136 | TNamed::operator=(other); | |
137 | fITSResponse=other.fITSResponse; | |
138 | fTPCResponse=other.fTPCResponse; | |
139 | fTRDResponse=other.fTRDResponse; | |
140 | fTOFResponse=other.fTOFResponse; | |
141 | fEMCALResponse=other.fEMCALResponse; | |
142 | fRange=other.fRange; | |
143 | fITSPIDmethod=other.fITSPIDmethod; | |
144 | fOADBPath=other.fOADBPath; | |
145 | fIsMC=other.fIsMC; | |
146 | fBeamType="PP"; | |
147 | fLHCperiod=""; | |
148 | fMCperiodTPC=""; | |
149 | fMCperiodUser=other.fMCperiodUser; | |
150 | fCurrentFile=""; | |
151 | fRecoPass=0; | |
152 | fRecoPassUser=other.fRecoPassUser; | |
153 | fRun=0; | |
154 | fOldRun=0; | |
155 | fArrPidResponseMaster=0x0; | |
156 | fResolutionCorrection=0x0; | |
157 | fTRDPIDParams=0x0; | |
158 | fTRDPIDReference=0x0; | |
159 | memset(fTRDslicesForPID,0,sizeof(UInt_t)*2); | |
160 | fTOFTimeZeroType=AliPIDResponse::kBest_T0; | |
161 | fTOFres=100.; | |
162 | fCurrentEvent=other.fCurrentEvent; | |
163 | } | |
164 | return *this; | |
165 | } | |
166 | ||
167 | //______________________________________________________________________________ | |
168 | Float_t AliPIDResponse::NumberOfSigmas(EDetCode detCode, const AliVParticle *track, AliPID::EParticleType type) const | |
169 | { | |
170 | // | |
171 | // NumberOfSigmas for 'detCode' | |
172 | // | |
173 | ||
174 | switch (detCode){ | |
175 | case kDetITS: return NumberOfSigmasITS(track, type); break; | |
176 | case kDetTPC: return NumberOfSigmasTPC(track, type); break; | |
177 | case kDetTOF: return NumberOfSigmasTOF(track, type); break; | |
178 | // case kDetTRD: return ComputeTRDProbability(track, type); break; | |
179 | // case kDetPHOS: return ComputePHOSProbability(track, type); break; | |
180 | // case kDetEMCAL: return NumberOfSigmasEMCAL(track, type); break; | |
181 | // case kDetHMPID: return ComputeHMPIDProbability(track, type); break; | |
182 | default: return -999.; | |
183 | } | |
184 | ||
185 | } | |
186 | ||
187 | //______________________________________________________________________________ | |
188 | Float_t AliPIDResponse::NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type) const { | |
189 | ||
190 | AliVCluster *matchedClus = NULL; | |
191 | ||
192 | Double_t mom = -1.; | |
193 | Double_t pt = -1.; | |
194 | Double_t EovP = -1.; | |
195 | Double_t fClsE = -1.; | |
196 | ||
197 | Int_t nMatchClus = -1; | |
198 | Int_t charge = 0; | |
199 | ||
200 | // Track matching | |
201 | nMatchClus = track->GetEMCALcluster(); | |
202 | if(nMatchClus > -1){ | |
203 | ||
204 | mom = track->P(); | |
205 | pt = track->Pt(); | |
206 | charge = track->Charge(); | |
207 | ||
208 | matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus); | |
209 | ||
210 | if(matchedClus){ | |
211 | ||
212 | // matched cluster is EMCAL | |
213 | if(matchedClus->IsEMCAL()){ | |
214 | ||
215 | fClsE = matchedClus->E(); | |
216 | EovP = fClsE/mom; | |
217 | ||
218 | ||
219 | // NSigma value really meaningful only for electrons! | |
220 | return fEMCALResponse.GetNumberOfSigmas(pt,EovP,type,charge); | |
221 | } | |
222 | } | |
223 | } | |
224 | ||
225 | return -999; | |
226 | ||
227 | } | |
228 | ||
229 | //______________________________________________________________________________ | |
230 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePIDProbability (EDetCode detCode, const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
231 | { | |
232 | // | |
233 | // Compute PID response of 'detCode' | |
234 | // | |
235 | ||
236 | switch (detCode){ | |
237 | case kDetITS: return ComputeITSProbability(track, nSpecies, p); break; | |
238 | case kDetTPC: return ComputeTPCProbability(track, nSpecies, p); break; | |
239 | case kDetTOF: return ComputeTOFProbability(track, nSpecies, p); break; | |
240 | case kDetTRD: return ComputeTRDProbability(track, nSpecies, p); break; | |
241 | case kDetPHOS: return ComputePHOSProbability(track, nSpecies, p); break; | |
242 | case kDetEMCAL: return ComputeEMCALProbability(track, nSpecies, p); break; | |
243 | case kDetHMPID: return ComputeHMPIDProbability(track, nSpecies, p); break; | |
244 | default: return kDetNoSignal; | |
245 | } | |
246 | } | |
247 | ||
248 | //______________________________________________________________________________ | |
249 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeITSProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
250 | { | |
251 | // | |
252 | // Compute PID response for the ITS | |
253 | // | |
254 | ||
255 | // set flat distribution (no decision) | |
256 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
257 | ||
258 | if ((track->GetStatus()&AliVTrack::kITSin)==0 && | |
259 | (track->GetStatus()&AliVTrack::kITSout)==0) return kDetNoSignal; | |
260 | ||
261 | Double_t mom=track->P(); | |
262 | Double_t dedx=track->GetITSsignal(); | |
263 | Bool_t isSA=kTRUE; | |
264 | Double_t momITS=mom; | |
265 | ULong_t trStatus=track->GetStatus(); | |
266 | if(trStatus&AliVTrack::kTPCin) isSA=kFALSE; | |
267 | UChar_t clumap=track->GetITSClusterMap(); | |
268 | Int_t nPointsForPid=0; | |
269 | for(Int_t i=2; i<6; i++){ | |
270 | if(clumap&(1<<i)) ++nPointsForPid; | |
271 | } | |
272 | ||
273 | if(nPointsForPid<3) { // track not to be used for combined PID purposes | |
274 | // track->ResetStatus(AliVTrack::kITSpid); | |
275 | return kDetNoSignal; | |
276 | } | |
277 | ||
278 | Bool_t mismatch=kTRUE/*, heavy=kTRUE*/; | |
279 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { | |
280 | Double_t mass=AliPID::ParticleMass(j);//GeV/c^2 | |
281 | Double_t bethe=fITSResponse.Bethe(momITS,mass); | |
282 | Double_t sigma=fITSResponse.GetResolution(bethe,nPointsForPid,isSA); | |
283 | if (TMath::Abs(dedx-bethe) > fRange*sigma) { | |
284 | p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma; | |
285 | } else { | |
286 | p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma; | |
287 | mismatch=kFALSE; | |
288 | } | |
289 | ||
290 | // Check for particles heavier than (AliPID::kSPECIES - 1) | |
291 | // if (dedx < (bethe + fRange*sigma)) heavy=kFALSE; | |
292 | ||
293 | } | |
294 | ||
295 | if (mismatch){ | |
296 | for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1./AliPID::kSPECIES; | |
297 | return kDetNoSignal; | |
298 | } | |
299 | ||
300 | ||
301 | return kDetPidOk; | |
302 | } | |
303 | //______________________________________________________________________________ | |
304 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTPCProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
305 | { | |
306 | // | |
307 | // Compute PID response for the TPC | |
308 | // | |
309 | ||
310 | // set flat distribution (no decision) | |
311 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
312 | ||
313 | // check quality of the track | |
314 | if ( (track->GetStatus()&AliVTrack::kTPCin )==0 && (track->GetStatus()&AliVTrack::kTPCout)==0 ) return kDetNoSignal; | |
315 | ||
316 | Double_t mom = track->GetTPCmomentum(); | |
317 | ||
318 | Double_t dedx=track->GetTPCsignal(); | |
319 | Bool_t mismatch=kTRUE/*, heavy=kTRUE*/; | |
320 | ||
321 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { | |
322 | AliPID::EParticleType type=AliPID::EParticleType(j); | |
323 | Double_t bethe=fTPCResponse.GetExpectedSignal(mom,type); | |
324 | Double_t sigma=fTPCResponse.GetExpectedSigma(mom,track->GetTPCsignalN(),type); | |
325 | if (TMath::Abs(dedx-bethe) > fRange*sigma) { | |
326 | p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma; | |
327 | } else { | |
328 | p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma; | |
329 | mismatch=kFALSE; | |
330 | } | |
331 | ||
332 | // TODO: Light nuclei, also in TPC pid response | |
333 | ||
334 | // Check for particles heavier than (AliPID::kSPECIES - 1) | |
335 | // if (dedx < (bethe + fRange*sigma)) heavy=kFALSE; | |
336 | ||
337 | } | |
338 | ||
339 | if (mismatch){ | |
340 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
341 | return kDetNoSignal; | |
342 | } | |
343 | ||
344 | return kDetPidOk; | |
345 | } | |
346 | //______________________________________________________________________________ | |
347 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTOFProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
348 | { | |
349 | // | |
350 | // Compute PID response for the | |
351 | // | |
352 | ||
353 | // set flat distribution (no decision) | |
354 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
355 | ||
356 | if ((track->GetStatus()&AliVTrack::kTOFout)==0) return kDetNoSignal; | |
357 | if ((track->GetStatus()&AliVTrack::kTIME)==0) return kDetNoSignal; | |
358 | ||
359 | Double_t time[AliPID::kSPECIESN]; | |
360 | track->GetIntegratedTimes(time); | |
361 | ||
362 | Double_t sigma[AliPID::kSPECIES]; | |
363 | for (Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++) { | |
364 | sigma[iPart] = fTOFResponse.GetExpectedSigma(track->P(),time[iPart],AliPID::ParticleMass(iPart)); | |
365 | } | |
366 | ||
367 | Bool_t mismatch = kTRUE/*, heavy = kTRUE*/; | |
368 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { | |
369 | AliPID::EParticleType type=AliPID::EParticleType(j); | |
370 | Double_t nsigmas=NumberOfSigmasTOF(track,type); | |
371 | ||
372 | Double_t sig = sigma[j]; | |
373 | if (TMath::Abs(nsigmas) > (fRange+2)) { | |
374 | p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig; | |
375 | } else | |
376 | p[j] = TMath::Exp(-0.5*nsigmas*nsigmas)/sig; | |
377 | ||
378 | if (TMath::Abs(nsigmas)<5.){ | |
379 | Double_t nsigmasTPC=NumberOfSigmasTPC(track,type); | |
380 | if (TMath::Abs(nsigmasTPC)<5.) mismatch=kFALSE; | |
381 | } | |
382 | } | |
383 | ||
384 | if (mismatch){ | |
385 | return kDetMismatch; | |
386 | } | |
387 | ||
388 | // TODO: Light nuclei | |
389 | ||
390 | return kDetPidOk; | |
391 | } | |
392 | //______________________________________________________________________________ | |
393 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
394 | { | |
395 | // | |
396 | // Compute PID response for the | |
397 | // | |
398 | ||
399 | // set flat distribution (no decision) | |
400 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
401 | if((track->GetStatus()&AliVTrack::kTRDout)==0) return kDetNoSignal; | |
402 | ||
403 | Float_t mom[6]; | |
404 | Double_t dedx[48]; // Allocate space for the maximum number of TRD slices | |
405 | Int_t nslices = fTRDslicesForPID[1] - fTRDslicesForPID[0] + 1; | |
406 | AliDebug(1, Form("First Slice: %d, Last Slice: %d, Number of slices: %d", fTRDslicesForPID[0], fTRDslicesForPID[1], nslices)); | |
407 | for(UInt_t ilayer = 0; ilayer < 6; ilayer++){ | |
408 | mom[ilayer] = track->GetTRDmomentum(ilayer); | |
409 | for(UInt_t islice = fTRDslicesForPID[0]; islice <= fTRDslicesForPID[1]; islice++){ | |
410 | dedx[ilayer*nslices+islice-fTRDslicesForPID[0]] = track->GetTRDslice(ilayer, islice); | |
411 | } | |
412 | } | |
413 | fTRDResponse.GetResponse(nslices, dedx, mom, p); | |
414 | return kDetPidOk; | |
415 | } | |
416 | //______________________________________________________________________________ | |
417 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeEMCALProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
418 | { | |
419 | // | |
420 | // Compute PID response for the EMCAL | |
421 | // | |
422 | ||
423 | AliVCluster *matchedClus = NULL; | |
424 | ||
425 | Double_t mom = -1.; | |
426 | Double_t pt = -1.; | |
427 | Double_t EovP = -1.; | |
428 | Double_t fClsE = -1.; | |
429 | ||
430 | Int_t nMatchClus = -1; | |
431 | Int_t charge = 0; | |
432 | ||
433 | // Track matching | |
434 | nMatchClus = track->GetEMCALcluster(); | |
435 | ||
436 | if(nMatchClus > -1){ | |
437 | ||
438 | mom = track->P(); | |
439 | pt = track->Pt(); | |
440 | charge = track->Charge(); | |
441 | ||
442 | matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus); | |
443 | ||
444 | if(matchedClus){ | |
445 | ||
446 | // matched cluster is EMCAL | |
447 | if(matchedClus->IsEMCAL()){ | |
448 | ||
449 | fClsE = matchedClus->E(); | |
450 | EovP = fClsE/mom; | |
451 | ||
452 | ||
453 | // compute the probabilities | |
454 | if( 999 != fEMCALResponse.ComputeEMCALProbability(pt,EovP,charge,p)){ | |
455 | ||
456 | // in case everything is OK | |
457 | return kDetPidOk; | |
458 | ||
459 | } | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
464 | // in all other cases set flat distribution (no decision) | |
465 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
466 | return kDetNoSignal; | |
467 | ||
468 | } | |
469 | //______________________________________________________________________________ | |
470 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePHOSProbability (const AliVTrack */*track*/, Int_t nSpecies, Double_t p[]) const | |
471 | { | |
472 | // | |
473 | // Compute PID response for the PHOS | |
474 | // | |
475 | ||
476 | // set flat distribution (no decision) | |
477 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
478 | return kDetNoSignal; | |
479 | } | |
480 | //______________________________________________________________________________ | |
481 | AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeHMPIDProbability(const AliVTrack *track, Int_t nSpecies, Double_t p[]) const | |
482 | { | |
483 | // | |
484 | // Compute PID response for the HMPID | |
485 | // | |
486 | ||
487 | // set flat distribution (no decision) | |
488 | for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies; | |
489 | if((track->GetStatus()&AliVTrack::kHMPIDpid)==0) return kDetNoSignal; | |
490 | ||
491 | track->GetHMPIDpid(p); | |
492 | ||
493 | return kDetPidOk; | |
494 | } | |
495 | ||
496 | //______________________________________________________________________________ | |
497 | void AliPIDResponse::InitialiseEvent(AliVEvent *event, Int_t pass) | |
498 | { | |
499 | // | |
500 | // Apply settings for the current event | |
501 | // | |
502 | fRecoPass=pass; | |
503 | ||
504 | fCurrentEvent=0x0; | |
505 | if (!event) return; | |
506 | fCurrentEvent=event; | |
507 | fRun=event->GetRunNumber(); | |
508 | ||
509 | if (fRun!=fOldRun){ | |
510 | ExecNewRun(); | |
511 | fOldRun=fRun; | |
512 | } | |
513 | ||
514 | //TPC resolution parametrisation PbPb | |
515 | if ( fResolutionCorrection ){ | |
516 | Double_t corrSigma=fResolutionCorrection->Eval(GetTPCMultiplicityBin(event)); | |
517 | fTPCResponse.SetSigma(3.79301e-03*corrSigma, 2.21280e+04); | |
518 | } | |
519 | ||
520 | //TOF resolution | |
521 | SetTOFResponse(event, (AliPIDResponse::EStartTimeType_t)fTOFTimeZeroType); | |
522 | ||
523 | } | |
524 | ||
525 | //______________________________________________________________________________ | |
526 | void AliPIDResponse::ExecNewRun() | |
527 | { | |
528 | // | |
529 | // Things to Execute upon a new run | |
530 | // | |
531 | SetRecoInfo(); | |
532 | ||
533 | SetITSParametrisation(); | |
534 | ||
535 | SetTPCPidResponseMaster(); | |
536 | SetTPCParametrisation(); | |
537 | ||
538 | SetTRDPidResponseMaster(); | |
539 | InitializeTRDResponse(); | |
540 | ||
541 | fTOFResponse.SetTimeResolution(fTOFres); | |
542 | } | |
543 | ||
544 | //_____________________________________________________ | |
545 | Double_t AliPIDResponse::GetTPCMultiplicityBin(const AliVEvent * const event) | |
546 | { | |
547 | // | |
548 | // Get TPC multiplicity in bins of 150 | |
549 | // | |
550 | ||
551 | const AliVVertex* vertexTPC = event->GetPrimaryVertex(); | |
552 | Double_t tpcMulti=0.; | |
553 | if(vertexTPC){ | |
554 | Double_t vertexContribTPC=vertexTPC->GetNContributors(); | |
555 | tpcMulti=vertexContribTPC/150.; | |
556 | if (tpcMulti>20.) tpcMulti=20.; | |
557 | } | |
558 | ||
559 | return tpcMulti; | |
560 | } | |
561 | ||
562 | //______________________________________________________________________________ | |
563 | void AliPIDResponse::SetRecoInfo() | |
564 | { | |
565 | // | |
566 | // Set reconstruction information | |
567 | // | |
568 | ||
569 | //reset information | |
570 | fLHCperiod=""; | |
571 | fMCperiodTPC=""; | |
572 | ||
573 | fBeamType=""; | |
574 | ||
575 | fBeamType="PP"; | |
576 | ||
577 | TPRegexp reg(".*(LHC11[a-z]+[0-9]+[a-z_]*)/.*"); | |
578 | //find the period by run number (UGLY, but not stored in ESD and AOD... ) | |
579 | if (fRun>=114737&&fRun<=117223) { fLHCperiod="LHC10B"; fMCperiodTPC="LHC10D1"; } | |
580 | else if (fRun>=118503&&fRun<=121040) { fLHCperiod="LHC10C"; fMCperiodTPC="LHC10D1"; } | |
581 | else if (fRun>=122195&&fRun<=126437) { fLHCperiod="LHC10D"; fMCperiodTPC="LHC10F6A"; } | |
582 | else if (fRun>=127710&&fRun<=130850) { fLHCperiod="LHC10E"; fMCperiodTPC="LHC10F6A"; } | |
583 | else if (fRun>=133004&&fRun<=135029) { fLHCperiod="LHC10F"; fMCperiodTPC="LHC10F6A"; } | |
584 | else if (fRun>=135654&&fRun<=136377) { fLHCperiod="LHC10G"; fMCperiodTPC="LHC10F6A"; } | |
585 | else if (fRun>=136851&&fRun<=139517) { | |
586 | fLHCperiod="LHC10H"; | |
587 | fMCperiodTPC="LHC10H8"; | |
588 | if (reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11A10"; | |
589 | fBeamType="PBPB"; | |
590 | } | |
591 | else if (fRun>=139699) { fLHCperiod="LHC11A"; fMCperiodTPC="LHC10F6A"; } | |
592 | ||
593 | //exception new pp MC productions from 2011 | |
594 | if (fBeamType=="PP" && reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11B2"; | |
595 | } | |
596 | ||
597 | //______________________________________________________________________________ | |
598 | void AliPIDResponse::SetITSParametrisation() | |
599 | { | |
600 | // | |
601 | // Set the ITS parametrisation | |
602 | // | |
603 | } | |
604 | ||
605 | //______________________________________________________________________________ | |
606 | void AliPIDResponse::SetTPCPidResponseMaster() | |
607 | { | |
608 | // | |
609 | // Load the TPC pid response functions from the OADB | |
610 | // | |
611 | //don't load twice for the moment | |
612 | if (fArrPidResponseMaster) return; | |
613 | ||
614 | ||
615 | //reset the PID response functions | |
616 | delete fArrPidResponseMaster; | |
617 | fArrPidResponseMaster=0x0; | |
618 | ||
619 | TString fileName(Form("%s/COMMON/PID/data/TPCPIDResponse.root", fOADBPath.Data())); | |
620 | ||
621 | TFile *f=TFile::Open(fileName.Data()); | |
622 | if (f && f->IsOpen() && !f->IsZombie()){ | |
623 | fArrPidResponseMaster=dynamic_cast<TObjArray*>(f->Get("TPCPIDResponse")); | |
624 | } | |
625 | delete f; | |
626 | ||
627 | if (!fArrPidResponseMaster){ | |
628 | AliFatal(Form("Could not retrieve the TPC pid response from: %s",fileName.Data())); | |
629 | return; | |
630 | } | |
631 | fArrPidResponseMaster->SetOwner(); | |
632 | } | |
633 | ||
634 | //______________________________________________________________________________ | |
635 | void AliPIDResponse::SetTPCParametrisation() | |
636 | { | |
637 | // | |
638 | // Change BB parametrisation for current run | |
639 | // | |
640 | ||
641 | if (fLHCperiod.IsNull()) { | |
642 | AliFatal("No period set, not changing parametrisation"); | |
643 | return; | |
644 | } | |
645 | ||
646 | // | |
647 | // Set default parametrisations for data and MC | |
648 | // | |
649 | ||
650 | //data type | |
651 | TString datatype="DATA"; | |
652 | //in case of mc fRecoPass is per default 1 | |
653 | if (fIsMC) { | |
654 | datatype="MC"; | |
655 | fRecoPass=1; | |
656 | } | |
657 | ||
658 | // | |
659 | //reset old splines | |
660 | // | |
661 | for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){ | |
662 | fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,0x0); | |
663 | } | |
664 | ||
665 | // | |
666 | //set the new PID splines | |
667 | // | |
668 | TString period=fLHCperiod; | |
669 | if (fArrPidResponseMaster){ | |
670 | TObject *grAll=0x0; | |
671 | //for MC don't use period information | |
672 | // if (fIsMC) period="[A-Z0-9]*"; | |
673 | //for MC use MC period information | |
674 | if (fIsMC) period=fMCperiodTPC; | |
675 | //pattern for the default entry (valid for all particles) | |
676 | TPRegexp reg(Form("TSPLINE3_%s_([A-Z]*)_%s_PASS%d_%s_MEAN",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data())); | |
677 | ||
678 | //loop over entries and filter them | |
679 | for (Int_t iresp=0; iresp<fArrPidResponseMaster->GetEntriesFast();++iresp){ | |
680 | TObject *responseFunction=fArrPidResponseMaster->At(iresp); | |
681 | if (responseFunction==0x0) continue; | |
682 | TString responseName=responseFunction->GetName(); | |
683 | ||
684 | if (!reg.MatchB(responseName)) continue; | |
685 | ||
686 | TObjArray *arr=reg.MatchS(responseName); | |
687 | TString particleName=arr->At(1)->GetName(); | |
688 | delete arr; | |
689 | if (particleName.IsNull()) continue; | |
690 | if (particleName=="ALL") grAll=responseFunction; | |
691 | else { | |
692 | //find particle id | |
693 | for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){ | |
694 | TString particle=AliPID::ParticleName(ispec); | |
695 | particle.ToUpper(); | |
696 | if ( particle == particleName ){ | |
697 | fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,responseFunction); | |
698 | fTPCResponse.SetUseDatabase(kTRUE); | |
699 | AliInfo(Form("Adding graph: %d - %s",ispec,responseFunction->GetName())); | |
700 | break; | |
701 | } | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
706 | //set default response function to all particles which don't have a specific one | |
707 | if (grAll){ | |
708 | for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){ | |
709 | if (!fTPCResponse.GetResponseFunction((AliPID::EParticleType)ispec)){ | |
710 | fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,grAll); | |
711 | AliInfo(Form("Adding graph: %d - %s",ispec,grAll->GetName())); | |
712 | } | |
713 | } | |
714 | } | |
715 | } | |
716 | ||
717 | // | |
718 | // Setup resolution parametrisation | |
719 | // | |
720 | ||
721 | //default | |
722 | fTPCResponse.SetSigma(3.79301e-03, 2.21280e+04); | |
723 | ||
724 | if (fRun>=122195){ | |
725 | fTPCResponse.SetSigma(2.30176e-02, 5.60422e+02); | |
726 | } | |
727 | if (fArrPidResponseMaster) | |
728 | fResolutionCorrection=(TF1*)fArrPidResponseMaster->FindObject(Form("TF1_%s_ALL_%s_PASS%d_%s_SIGMA",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data())); | |
729 | ||
730 | if (fResolutionCorrection) AliInfo(Form("Setting multiplicity correction function: %s",fResolutionCorrection->GetName())); | |
731 | } | |
732 | ||
733 | //______________________________________________________________________________ | |
734 | void AliPIDResponse::SetTRDPidResponseMaster() | |
735 | { | |
736 | // | |
737 | // Load the TRD pid params and references from the OADB | |
738 | // | |
739 | if(fTRDPIDParams) return; | |
740 | AliOADBContainer contParams("contParams"); | |
741 | ||
742 | contParams.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDParams.root", fOADBPath.Data()), "AliTRDPIDParams"); | |
743 | fTRDPIDParams = (TObjArray *)contParams.GetObject(fRun); | |
744 | ||
745 | AliOADBContainer contRefs("contRefs"); | |
746 | contRefs.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDReferenceLQ1D.root", fOADBPath.Data()), "AliTRDPIDReference"); | |
747 | fTRDPIDReference = (AliTRDPIDReference *)contRefs.GetObject(fRun); | |
748 | } | |
749 | ||
750 | //______________________________________________________________________________ | |
751 | void AliPIDResponse::InitializeTRDResponse(){ | |
752 | // | |
753 | // Set PID Params and references to the TRD PID response | |
754 | // | |
755 | fTRDResponse.SetPIDParams(fTRDPIDParams); | |
756 | fTRDResponse.Load(fTRDPIDReference); | |
757 | if(fLHCperiod == "LHC10b" || fLHCperiod == "LHC10c" || fLHCperiod == "LHC10d" || fLHCperiod == "LHC10e"){ | |
758 | fTRDslicesForPID[0] = 0; | |
759 | fTRDslicesForPID[1] = 7; | |
760 | } | |
761 | } | |
762 | ||
763 | //_________________________________________________________________________ | |
764 | Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack, Double_t efficiencyLevel) const { | |
765 | // | |
766 | // Check whether track is identified as electron under a given electron efficiency hypothesis | |
767 | // | |
768 | Double_t probs[AliPID::kSPECIES]; | |
769 | ComputeTRDProbability(vtrack, AliPID::kSPECIES, probs); | |
770 | ||
771 | Int_t ntracklets = vtrack->GetTRDntrackletsPID(); | |
772 | // Take mean of the TRD momenta in the given tracklets | |
773 | Float_t p = 0, trdmomenta[AliVTrack::kTRDnPlanes]; | |
774 | Int_t nmomenta = 0; | |
775 | for(Int_t iPl=0;iPl<AliVTrack::kTRDnPlanes;iPl++){ | |
776 | if(vtrack->GetTRDmomentum(iPl) > 0.){ | |
777 | trdmomenta[nmomenta++] = vtrack->GetTRDmomentum(iPl); | |
778 | } | |
779 | } | |
780 | p = TMath::Mean(nmomenta, trdmomenta); | |
781 | ||
782 | return fTRDResponse.IdentifiedAsElectron(ntracklets, probs, p, efficiencyLevel); | |
783 | } | |
784 |