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29bf19f2 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
4ec8e76d 16/* $Id: AliPIDResponse.cxx 46193 2010-12-21 09:00:14Z wiechula $ */
29bf19f2 17
18//-----------------------------------------------------------------
4ec8e76d 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 //
29bf19f2 24//-----------------------------------------------------------------
25
4ec8e76d 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>
fd21ec8d 34#include <AliVTrack.h>
4ec8e76d 35#include <AliLog.h>
36#include <AliPID.h>
ea235c90 37#include <AliOADBContainer.h>
b2138b40 38#include <AliTRDPIDParams.h>
ea235c90 39#include <AliTRDPIDReference.h>
29bf19f2 40
41#include "AliPIDResponse.h"
42
80f28562 43#include "AliCentrality.h"
44
29bf19f2 45ClassImp(AliPIDResponse);
46
4ec8e76d 47AliPIDResponse::AliPIDResponse(Bool_t isMC/*=kFALSE*/) :
48TNamed("PIDResponse","PIDResponse"),
49fITSResponse(isMC),
50fTPCResponse(),
51fTRDResponse(),
52fTOFResponse(),
e96b9916 53fEMCALResponse(),
fd21ec8d 54fRange(5.),
55fITSPIDmethod(kITSTruncMean),
4ec8e76d 56fIsMC(isMC),
57fOADBPath(),
58fBeamType("PP"),
59fLHCperiod(),
60fMCperiodTPC(),
fd21ec8d 61fMCperiodUser(),
ea235c90 62fCurrentFile(),
4ec8e76d 63fRecoPass(0),
fd21ec8d 64fRecoPassUser(-1),
4ec8e76d 65fRun(0),
66fOldRun(0),
67fArrPidResponseMaster(0x0),
68fResolutionCorrection(0x0),
ea235c90 69fTRDPIDParams(0x0),
70fTRDPIDReference(0x0),
4ec8e76d 71fTOFTimeZeroType(kBest_T0),
e96b9916 72fTOFres(100.),
0b39f221 73fTOFtail(1.1),
b2138b40 74fEMCALPIDParams(0x0),
80f28562 75fCurrentEvent(0x0),
76fCurrCentrality(0.0)
4ec8e76d 77{
78 //
79 // default ctor
80 //
81 AliLog::SetClassDebugLevel("AliPIDResponse",10);
82 AliLog::SetClassDebugLevel("AliESDpid",10);
83 AliLog::SetClassDebugLevel("AliAODpidUtil",10);
ea235c90 84
85 memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
4ec8e76d 86}
87
88//______________________________________________________________________________
89AliPIDResponse::~AliPIDResponse()
90{
91 //
92 // dtor
93 //
94 delete fArrPidResponseMaster;
ea235c90 95 delete fTRDPIDParams;
96 delete fTRDPIDReference;
4ec8e76d 97}
98
99//______________________________________________________________________________
100AliPIDResponse::AliPIDResponse(const AliPIDResponse &other) :
101TNamed(other),
102fITSResponse(other.fITSResponse),
103fTPCResponse(other.fTPCResponse),
104fTRDResponse(other.fTRDResponse),
105fTOFResponse(other.fTOFResponse),
e96b9916 106fEMCALResponse(other.fEMCALResponse),
fd21ec8d 107fRange(other.fRange),
108fITSPIDmethod(other.fITSPIDmethod),
4ec8e76d 109fIsMC(other.fIsMC),
110fOADBPath(other.fOADBPath),
111fBeamType("PP"),
112fLHCperiod(),
113fMCperiodTPC(),
fd21ec8d 114fMCperiodUser(other.fMCperiodUser),
ea235c90 115fCurrentFile(),
4ec8e76d 116fRecoPass(0),
fd21ec8d 117fRecoPassUser(other.fRecoPassUser),
4ec8e76d 118fRun(0),
119fOldRun(0),
120fArrPidResponseMaster(0x0),
121fResolutionCorrection(0x0),
ea235c90 122fTRDPIDParams(0x0),
123fTRDPIDReference(0x0),
4ec8e76d 124fTOFTimeZeroType(AliPIDResponse::kBest_T0),
e96b9916 125fTOFres(100.),
0b39f221 126fTOFtail(1.1),
b2138b40 127fEMCALPIDParams(0x0),
80f28562 128fCurrentEvent(0x0),
129fCurrCentrality(0.0)
4ec8e76d 130{
131 //
132 // copy ctor
133 //
ea235c90 134 memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
4ec8e76d 135}
136
137//______________________________________________________________________________
138AliPIDResponse& AliPIDResponse::operator=(const AliPIDResponse &other)
139{
140 //
141 // copy ctor
142 //
143 if(this!=&other) {
144 delete fArrPidResponseMaster;
145 TNamed::operator=(other);
146 fITSResponse=other.fITSResponse;
147 fTPCResponse=other.fTPCResponse;
148 fTRDResponse=other.fTRDResponse;
149 fTOFResponse=other.fTOFResponse;
e96b9916 150 fEMCALResponse=other.fEMCALResponse;
fd21ec8d 151 fRange=other.fRange;
152 fITSPIDmethod=other.fITSPIDmethod;
4ec8e76d 153 fOADBPath=other.fOADBPath;
154 fIsMC=other.fIsMC;
155 fBeamType="PP";
156 fLHCperiod="";
157 fMCperiodTPC="";
fd21ec8d 158 fMCperiodUser=other.fMCperiodUser;
ea235c90 159 fCurrentFile="";
4ec8e76d 160 fRecoPass=0;
fd21ec8d 161 fRecoPassUser=other.fRecoPassUser;
4ec8e76d 162 fRun=0;
163 fOldRun=0;
164 fArrPidResponseMaster=0x0;
165 fResolutionCorrection=0x0;
ea235c90 166 fTRDPIDParams=0x0;
167 fTRDPIDReference=0x0;
b2138b40 168 fEMCALPIDParams=0x0;
ea235c90 169 memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
4ec8e76d 170 fTOFTimeZeroType=AliPIDResponse::kBest_T0;
171 fTOFres=100.;
0b39f221 172 fTOFtail=1.1;
e96b9916 173 fCurrentEvent=other.fCurrentEvent;
4ec8e76d 174 }
175 return *this;
176}
177
fd21ec8d 178//______________________________________________________________________________
179Float_t AliPIDResponse::NumberOfSigmas(EDetCode detCode, const AliVParticle *track, AliPID::EParticleType type) const
180{
181 //
182 // NumberOfSigmas for 'detCode'
183 //
184
185 switch (detCode){
186 case kDetITS: return NumberOfSigmasITS(track, type); break;
187 case kDetTPC: return NumberOfSigmasTPC(track, type); break;
188 case kDetTOF: return NumberOfSigmasTOF(track, type); break;
189// case kDetTRD: return ComputeTRDProbability(track, type); break;
190// case kDetPHOS: return ComputePHOSProbability(track, type); break;
e96b9916 191// case kDetEMCAL: return NumberOfSigmasEMCAL(track, type); break;
fd21ec8d 192// case kDetHMPID: return ComputeHMPIDProbability(track, type); break;
193 default: return -999.;
194 }
195
196}
197
e96b9916 198//______________________________________________________________________________
199Float_t AliPIDResponse::NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type) const {
200
201 AliVCluster *matchedClus = NULL;
202
203 Double_t mom = -1.;
204 Double_t pt = -1.;
205 Double_t EovP = -1.;
206 Double_t fClsE = -1.;
207
208 Int_t nMatchClus = -1;
209 Int_t charge = 0;
210
211 // Track matching
212 nMatchClus = track->GetEMCALcluster();
213 if(nMatchClus > -1){
214
215 mom = track->P();
216 pt = track->Pt();
217 charge = track->Charge();
218
219 matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus);
220
221 if(matchedClus){
222
223 // matched cluster is EMCAL
224 if(matchedClus->IsEMCAL()){
225
226 fClsE = matchedClus->E();
227 EovP = fClsE/mom;
228
229
230 // NSigma value really meaningful only for electrons!
231 return fEMCALResponse.GetNumberOfSigmas(pt,EovP,type,charge);
232 }
233 }
234 }
235
236 return -999;
237
238}
239
fd21ec8d 240//______________________________________________________________________________
241AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePIDProbability (EDetCode detCode, const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
242{
243 //
244 // Compute PID response of 'detCode'
245 //
246
247 switch (detCode){
248 case kDetITS: return ComputeITSProbability(track, nSpecies, p); break;
249 case kDetTPC: return ComputeTPCProbability(track, nSpecies, p); break;
250 case kDetTOF: return ComputeTOFProbability(track, nSpecies, p); break;
251 case kDetTRD: return ComputeTRDProbability(track, nSpecies, p); break;
252 case kDetPHOS: return ComputePHOSProbability(track, nSpecies, p); break;
253 case kDetEMCAL: return ComputeEMCALProbability(track, nSpecies, p); break;
254 case kDetHMPID: return ComputeHMPIDProbability(track, nSpecies, p); break;
255 default: return kDetNoSignal;
256 }
257}
258
259//______________________________________________________________________________
260AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeITSProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
261{
262 //
263 // Compute PID response for the ITS
264 //
265
266 // set flat distribution (no decision)
267 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
268
269 if ((track->GetStatus()&AliVTrack::kITSin)==0 &&
270 (track->GetStatus()&AliVTrack::kITSout)==0) return kDetNoSignal;
271
272 Double_t mom=track->P();
273 Double_t dedx=track->GetITSsignal();
274 Bool_t isSA=kTRUE;
275 Double_t momITS=mom;
276 ULong_t trStatus=track->GetStatus();
277 if(trStatus&AliVTrack::kTPCin) isSA=kFALSE;
278 UChar_t clumap=track->GetITSClusterMap();
279 Int_t nPointsForPid=0;
280 for(Int_t i=2; i<6; i++){
281 if(clumap&(1<<i)) ++nPointsForPid;
282 }
283
284 if(nPointsForPid<3) { // track not to be used for combined PID purposes
285 // track->ResetStatus(AliVTrack::kITSpid);
286 return kDetNoSignal;
287 }
288
289 Bool_t mismatch=kTRUE/*, heavy=kTRUE*/;
290 for (Int_t j=0; j<AliPID::kSPECIES; j++) {
291 Double_t mass=AliPID::ParticleMass(j);//GeV/c^2
292 Double_t bethe=fITSResponse.Bethe(momITS,mass);
293 Double_t sigma=fITSResponse.GetResolution(bethe,nPointsForPid,isSA);
294 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
295 p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
296 } else {
297 p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
298 mismatch=kFALSE;
299 }
300
301 // Check for particles heavier than (AliPID::kSPECIES - 1)
302 // if (dedx < (bethe + fRange*sigma)) heavy=kFALSE;
303
304 }
305
306 if (mismatch){
307 for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1./AliPID::kSPECIES;
308 return kDetNoSignal;
309 }
310
311
312 return kDetPidOk;
313}
314//______________________________________________________________________________
315AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTPCProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
316{
317 //
318 // Compute PID response for the TPC
319 //
320
321 // set flat distribution (no decision)
322 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
323
324 // check quality of the track
325 if ( (track->GetStatus()&AliVTrack::kTPCin )==0 && (track->GetStatus()&AliVTrack::kTPCout)==0 ) return kDetNoSignal;
326
327 Double_t mom = track->GetTPCmomentum();
328
329 Double_t dedx=track->GetTPCsignal();
330 Bool_t mismatch=kTRUE/*, heavy=kTRUE*/;
331
332 for (Int_t j=0; j<AliPID::kSPECIES; j++) {
333 AliPID::EParticleType type=AliPID::EParticleType(j);
334 Double_t bethe=fTPCResponse.GetExpectedSignal(mom,type);
335 Double_t sigma=fTPCResponse.GetExpectedSigma(mom,track->GetTPCsignalN(),type);
336 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
337 p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
338 } else {
339 p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
340 mismatch=kFALSE;
341 }
342
343 // TODO: Light nuclei, also in TPC pid response
344
345 // Check for particles heavier than (AliPID::kSPECIES - 1)
346// if (dedx < (bethe + fRange*sigma)) heavy=kFALSE;
347
348 }
349
350 if (mismatch){
351 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
352 return kDetNoSignal;
353 }
354
355 return kDetPidOk;
356}
357//______________________________________________________________________________
358AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTOFProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
359{
360 //
361 // Compute PID response for the
362 //
363
0b39f221 364 Double_t meanCorrFactor = 0.11/fTOFtail; // Correction factor on the mean because of the tail (should be ~ 0.1 with tail = 1.1)
365
fd21ec8d 366 // set flat distribution (no decision)
367 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
368
369 if ((track->GetStatus()&AliVTrack::kTOFout)==0) return kDetNoSignal;
370 if ((track->GetStatus()&AliVTrack::kTIME)==0) return kDetNoSignal;
371
372 Double_t time[AliPID::kSPECIESN];
373 track->GetIntegratedTimes(time);
374
375 Double_t sigma[AliPID::kSPECIES];
376 for (Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++) {
377 sigma[iPart] = fTOFResponse.GetExpectedSigma(track->P(),time[iPart],AliPID::ParticleMass(iPart));
378 }
379
380 Bool_t mismatch = kTRUE/*, heavy = kTRUE*/;
381 for (Int_t j=0; j<AliPID::kSPECIES; j++) {
382 AliPID::EParticleType type=AliPID::EParticleType(j);
0b39f221 383 Double_t nsigmas=NumberOfSigmasTOF(track,type) + meanCorrFactor;
384
fd21ec8d 385 Double_t sig = sigma[j];
0b39f221 386 if (TMath::Abs(nsigmas) > (fRange+2)) {
387 if(nsigmas < fTOFtail)
388 p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig;
389 else
390 p[j] = TMath::Exp(-(fRange+2 - fTOFtail*0.5)*fTOFtail)/sig;
391 } else{
392 if(nsigmas < fTOFtail)
393 p[j] = TMath::Exp(-0.5*nsigmas*nsigmas)/sig;
394 else
395 p[j] = TMath::Exp(-(nsigmas - fTOFtail*0.5)*fTOFtail)/sig;
396 }
397
398 /* OLD Gaussian shape
fd21ec8d 399 if (TMath::Abs(nsigmas) > (fRange+2)) {
400 p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig;
401 } else
402 p[j] = TMath::Exp(-0.5*nsigmas*nsigmas)/sig;
0b39f221 403 */
fd21ec8d 404
405 if (TMath::Abs(nsigmas)<5.){
406 Double_t nsigmasTPC=NumberOfSigmasTPC(track,type);
407 if (TMath::Abs(nsigmasTPC)<5.) mismatch=kFALSE;
408 }
409 }
410
411 if (mismatch){
412 return kDetMismatch;
413 }
414
415 // TODO: Light nuclei
416
417 return kDetPidOk;
418}
419//______________________________________________________________________________
ea235c90 420AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
fd21ec8d 421{
422 //
423 // Compute PID response for the
424 //
425
426 // set flat distribution (no decision)
427 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
ea235c90 428 if((track->GetStatus()&AliVTrack::kTRDout)==0) return kDetNoSignal;
429
430 Float_t mom[6];
431 Double_t dedx[48]; // Allocate space for the maximum number of TRD slices
432 Int_t nslices = fTRDslicesForPID[1] - fTRDslicesForPID[0] + 1;
433 AliDebug(1, Form("First Slice: %d, Last Slice: %d, Number of slices: %d", fTRDslicesForPID[0], fTRDslicesForPID[1], nslices));
434 for(UInt_t ilayer = 0; ilayer < 6; ilayer++){
435 mom[ilayer] = track->GetTRDmomentum(ilayer);
436 for(UInt_t islice = fTRDslicesForPID[0]; islice <= fTRDslicesForPID[1]; islice++){
437 dedx[ilayer*nslices+islice-fTRDslicesForPID[0]] = track->GetTRDslice(ilayer, islice);
438 }
439 }
440 fTRDResponse.GetResponse(nslices, dedx, mom, p);
441 return kDetPidOk;
fd21ec8d 442}
443//______________________________________________________________________________
e96b9916 444AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeEMCALProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
fd21ec8d 445{
446 //
447 // Compute PID response for the EMCAL
448 //
449
e96b9916 450 AliVCluster *matchedClus = NULL;
451
452 Double_t mom = -1.;
453 Double_t pt = -1.;
454 Double_t EovP = -1.;
455 Double_t fClsE = -1.;
456
457 Int_t nMatchClus = -1;
458 Int_t charge = 0;
459
460 // Track matching
461 nMatchClus = track->GetEMCALcluster();
462
463 if(nMatchClus > -1){
464
465 mom = track->P();
466 pt = track->Pt();
467 charge = track->Charge();
468
469 matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus);
470
471 if(matchedClus){
472
473 // matched cluster is EMCAL
474 if(matchedClus->IsEMCAL()){
475
476 fClsE = matchedClus->E();
477 EovP = fClsE/mom;
478
479
480 // compute the probabilities
481 if( 999 != fEMCALResponse.ComputeEMCALProbability(pt,EovP,charge,p)){
482
483 // in case everything is OK
484 return kDetPidOk;
485
486 }
487 }
488 }
489 }
490
491 // in all other cases set flat distribution (no decision)
fd21ec8d 492 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
493 return kDetNoSignal;
e96b9916 494
fd21ec8d 495}
496//______________________________________________________________________________
497AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePHOSProbability (const AliVTrack */*track*/, Int_t nSpecies, Double_t p[]) const
498{
499 //
500 // Compute PID response for the PHOS
501 //
502
503 // set flat distribution (no decision)
504 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
505 return kDetNoSignal;
506}
507//______________________________________________________________________________
ea235c90 508AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeHMPIDProbability(const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
fd21ec8d 509{
510 //
511 // Compute PID response for the HMPID
512 //
513
514 // set flat distribution (no decision)
515 for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
ea235c90 516 if((track->GetStatus()&AliVTrack::kHMPIDpid)==0) return kDetNoSignal;
517
518 track->GetHMPIDpid(p);
519
520 return kDetPidOk;
fd21ec8d 521}
522
4ec8e76d 523//______________________________________________________________________________
524void AliPIDResponse::InitialiseEvent(AliVEvent *event, Int_t pass)
525{
526 //
527 // Apply settings for the current event
528 //
529 fRecoPass=pass;
e96b9916 530
531 fCurrentEvent=0x0;
4ec8e76d 532 if (!event) return;
e96b9916 533 fCurrentEvent=event;
4ec8e76d 534 fRun=event->GetRunNumber();
535
536 if (fRun!=fOldRun){
537 ExecNewRun();
538 fOldRun=fRun;
539 }
540
541 //TPC resolution parametrisation PbPb
542 if ( fResolutionCorrection ){
543 Double_t corrSigma=fResolutionCorrection->Eval(GetTPCMultiplicityBin(event));
544 fTPCResponse.SetSigma(3.79301e-03*corrSigma, 2.21280e+04);
545 }
546
547 //TOF resolution
548 SetTOFResponse(event, (AliPIDResponse::EStartTimeType_t)fTOFTimeZeroType);
80f28562 549
550 // Get and set centrality
551 AliCentrality *centrality = event->GetCentrality();
552 if(centrality){
553 fCurrCentrality = centrality->GetCentralityPercentile("V0M");
554 }
555 else{
556 fCurrCentrality = -1;
557 }
4ec8e76d 558}
559
560//______________________________________________________________________________
561void AliPIDResponse::ExecNewRun()
562{
563 //
564 // Things to Execute upon a new run
565 //
566 SetRecoInfo();
567
568 SetITSParametrisation();
569
570 SetTPCPidResponseMaster();
571 SetTPCParametrisation();
53d016dc 572
573 SetTRDPidResponseMaster();
574 InitializeTRDResponse();
b2138b40 575
576 SetEMCALPidResponseMaster();
577 InitializeEMCALResponse();
4ec8e76d 578
579 fTOFResponse.SetTimeResolution(fTOFres);
580}
581
582//_____________________________________________________
583Double_t AliPIDResponse::GetTPCMultiplicityBin(const AliVEvent * const event)
584{
585 //
586 // Get TPC multiplicity in bins of 150
587 //
588
589 const AliVVertex* vertexTPC = event->GetPrimaryVertex();
590 Double_t tpcMulti=0.;
591 if(vertexTPC){
592 Double_t vertexContribTPC=vertexTPC->GetNContributors();
593 tpcMulti=vertexContribTPC/150.;
594 if (tpcMulti>20.) tpcMulti=20.;
595 }
596
597 return tpcMulti;
598}
599
600//______________________________________________________________________________
601void AliPIDResponse::SetRecoInfo()
602{
603 //
604 // Set reconstruction information
605 //
606
607 //reset information
608 fLHCperiod="";
609 fMCperiodTPC="";
610
611 fBeamType="";
612
613 fBeamType="PP";
614
53d016dc 615 TPRegexp reg(".*(LHC11[a-z]+[0-9]+[a-z_]*)/.*");
4ec8e76d 616 //find the period by run number (UGLY, but not stored in ESD and AOD... )
617 if (fRun>=114737&&fRun<=117223) { fLHCperiod="LHC10B"; fMCperiodTPC="LHC10D1"; }
618 else if (fRun>=118503&&fRun<=121040) { fLHCperiod="LHC10C"; fMCperiodTPC="LHC10D1"; }
619 else if (fRun>=122195&&fRun<=126437) { fLHCperiod="LHC10D"; fMCperiodTPC="LHC10F6A"; }
99e9d5ec 620 else if (fRun>=127710&&fRun<=130850) { fLHCperiod="LHC10E"; fMCperiodTPC="LHC10F6A"; }
4ec8e76d 621 else if (fRun>=133004&&fRun<=135029) { fLHCperiod="LHC10F"; fMCperiodTPC="LHC10F6A"; }
622 else if (fRun>=135654&&fRun<=136377) { fLHCperiod="LHC10G"; fMCperiodTPC="LHC10F6A"; }
ea235c90 623 else if (fRun>=136851&&fRun<=139517) {
624 fLHCperiod="LHC10H";
625 fMCperiodTPC="LHC10H8";
626 if (reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11A10";
627 fBeamType="PBPB";
628 }
3077a03d 629 else if (fRun>=139699&&fRun<=146860) { fLHCperiod="LHC11A"; fMCperiodTPC="LHC10F6A"; }
2e97a211 630 //TODO: periods 11B, 11C are not yet treated assume 11d for the moment
631 else if (fRun>=148531&&fRun<=155384) { fLHCperiod="LHC11D"; fMCperiodTPC="LHC10F6A"; }
632 else if (fRun>=156477&&fRun<=159635) { fLHCperiod="LHC11D"; fMCperiodTPC="LHC10F6A"; }
3077a03d 633 else if (fRun>=166529) {
634 fLHCperiod="LHC11H";
635 fMCperiodTPC="LHC11A10";
636 fBeamType="PBPB";
637 }
638
80ab5635 639
640 //exception new pp MC productions from 2011
641 if (fBeamType=="PP" && reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11B2";
4ec8e76d 642}
643
644//______________________________________________________________________________
645void AliPIDResponse::SetITSParametrisation()
646{
647 //
648 // Set the ITS parametrisation
649 //
650}
651
652//______________________________________________________________________________
653void AliPIDResponse::SetTPCPidResponseMaster()
654{
655 //
656 // Load the TPC pid response functions from the OADB
657 //
09b50a42 658 //don't load twice for the moment
659 if (fArrPidResponseMaster) return;
660
661
4ec8e76d 662 //reset the PID response functions
663 delete fArrPidResponseMaster;
664 fArrPidResponseMaster=0x0;
665
666 TString fileName(Form("%s/COMMON/PID/data/TPCPIDResponse.root", fOADBPath.Data()));
667
ea235c90 668 TFile *f=TFile::Open(fileName.Data());
669 if (f && f->IsOpen() && !f->IsZombie()){
670 fArrPidResponseMaster=dynamic_cast<TObjArray*>(f->Get("TPCPIDResponse"));
4ec8e76d 671 }
ea235c90 672 delete f;
4ec8e76d 673
674 if (!fArrPidResponseMaster){
675 AliFatal(Form("Could not retrieve the TPC pid response from: %s",fileName.Data()));
676 return;
677 }
678 fArrPidResponseMaster->SetOwner();
679}
680
681//______________________________________________________________________________
682void AliPIDResponse::SetTPCParametrisation()
683{
684 //
685 // Change BB parametrisation for current run
686 //
687
688 if (fLHCperiod.IsNull()) {
689 AliFatal("No period set, not changing parametrisation");
690 return;
691 }
692
693 //
694 // Set default parametrisations for data and MC
695 //
696
697 //data type
698 TString datatype="DATA";
699 //in case of mc fRecoPass is per default 1
700 if (fIsMC) {
701 datatype="MC";
702 fRecoPass=1;
703 }
704
705 //
706 //reset old splines
707 //
708 for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
709 fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,0x0);
710 }
711
712 //
713 //set the new PID splines
714 //
715 TString period=fLHCperiod;
716 if (fArrPidResponseMaster){
717 TObject *grAll=0x0;
718 //for MC don't use period information
719// if (fIsMC) period="[A-Z0-9]*";
720 //for MC use MC period information
721 if (fIsMC) period=fMCperiodTPC;
722//pattern for the default entry (valid for all particles)
723 TPRegexp reg(Form("TSPLINE3_%s_([A-Z]*)_%s_PASS%d_%s_MEAN",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
724
725 //loop over entries and filter them
726 for (Int_t iresp=0; iresp<fArrPidResponseMaster->GetEntriesFast();++iresp){
727 TObject *responseFunction=fArrPidResponseMaster->At(iresp);
728 if (responseFunction==0x0) continue;
729 TString responseName=responseFunction->GetName();
730
731 if (!reg.MatchB(responseName)) continue;
732
733 TObjArray *arr=reg.MatchS(responseName);
734 TString particleName=arr->At(1)->GetName();
735 delete arr;
736 if (particleName.IsNull()) continue;
737 if (particleName=="ALL") grAll=responseFunction;
738 else {
739 //find particle id
740 for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
741 TString particle=AliPID::ParticleName(ispec);
742 particle.ToUpper();
743 if ( particle == particleName ){
744 fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,responseFunction);
745 fTPCResponse.SetUseDatabase(kTRUE);
746 AliInfo(Form("Adding graph: %d - %s",ispec,responseFunction->GetName()));
747 break;
748 }
749 }
750 }
751 }
752
753 //set default response function to all particles which don't have a specific one
754 if (grAll){
755 for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
756 if (!fTPCResponse.GetResponseFunction((AliPID::EParticleType)ispec)){
757 fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,grAll);
758 AliInfo(Form("Adding graph: %d - %s",ispec,grAll->GetName()));
759 }
760 }
761 }
762 }
763
764 //
765 // Setup resolution parametrisation
766 //
767
768 //default
769 fTPCResponse.SetSigma(3.79301e-03, 2.21280e+04);
770
771 if (fRun>=122195){
772 fTPCResponse.SetSigma(2.30176e-02, 5.60422e+02);
773 }
23425eb2 774 if (fArrPidResponseMaster)
4ec8e76d 775 fResolutionCorrection=(TF1*)fArrPidResponseMaster->FindObject(Form("TF1_%s_ALL_%s_PASS%d_%s_SIGMA",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
776
777 if (fResolutionCorrection) AliInfo(Form("Setting multiplicity correction function: %s",fResolutionCorrection->GetName()));
778}
779
ea235c90 780//______________________________________________________________________________
781void AliPIDResponse::SetTRDPidResponseMaster()
782{
783 //
784 // Load the TRD pid params and references from the OADB
785 //
786 if(fTRDPIDParams) return;
53d016dc 787 AliOADBContainer contParams("contParams");
788
59a8e853 789 Int_t statusPars = contParams.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDParams.root", fOADBPath.Data()), "AliTRDPIDParams");
790 if(statusPars){
791 AliError("Failed initializing PID Params from OADB");
792 } else {
793 AliInfo(Form("Loading TRD Params from %s/COMMON/PID/data/TRDPIDParams.root", fOADBPath.Data()));
b2138b40 794 fTRDPIDParams = dynamic_cast<AliTRDPIDParams *>(contParams.GetObject(fRun));
59a8e853 795 if(!fTRDPIDParams){
796 AliError(Form("TRD Params not found in run %d", fRun));
797 }
798 }
ea235c90 799
53d016dc 800 AliOADBContainer contRefs("contRefs");
59a8e853 801 Int_t statusRefs = contRefs.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDReferenceLQ1D.root", fOADBPath.Data()), "AliTRDPIDReference");
802 if(statusRefs){
803 AliInfo("Failed Loading References for TRD");
804 } else {
805 AliInfo(Form("Loading TRD References from %s/COMMON/PID/data/TRDPIDReferenceLQ1D.root", fOADBPath.Data()));
806 fTRDPIDReference = dynamic_cast<AliTRDPIDReference *>(contRefs.GetObject(fRun));
807 if(!fTRDPIDReference){
808 AliError(Form("TRD References not found in OADB Container for run %d", fRun));
809 }
810 }
ea235c90 811}
812
813//______________________________________________________________________________
814void AliPIDResponse::InitializeTRDResponse(){
815 //
816 // Set PID Params and references to the TRD PID response
817 //
818 fTRDResponse.SetPIDParams(fTRDPIDParams);
819 fTRDResponse.Load(fTRDPIDReference);
820 if(fLHCperiod == "LHC10b" || fLHCperiod == "LHC10c" || fLHCperiod == "LHC10d" || fLHCperiod == "LHC10e"){
821 fTRDslicesForPID[0] = 0;
822 fTRDslicesForPID[1] = 7;
823 }
824}
825
826//_________________________________________________________________________
827Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack, Double_t efficiencyLevel) const {
828 //
829 // Check whether track is identified as electron under a given electron efficiency hypothesis
830 //
831 Double_t probs[AliPID::kSPECIES];
832 ComputeTRDProbability(vtrack, AliPID::kSPECIES, probs);
833
99e9d5ec 834 Int_t ntracklets = vtrack->GetTRDntrackletsPID();
835 // Take mean of the TRD momenta in the given tracklets
836 Float_t p = 0, trdmomenta[AliVTrack::kTRDnPlanes];
837 Int_t nmomenta = 0;
ea235c90 838 for(Int_t iPl=0;iPl<AliVTrack::kTRDnPlanes;iPl++){
839 if(vtrack->GetTRDmomentum(iPl) > 0.){
99e9d5ec 840 trdmomenta[nmomenta++] = vtrack->GetTRDmomentum(iPl);
ea235c90 841 }
842 }
99e9d5ec 843 p = TMath::Mean(nmomenta, trdmomenta);
ea235c90 844
845 return fTRDResponse.IdentifiedAsElectron(ntracklets, probs, p, efficiencyLevel);
846}
847
b2138b40 848//______________________________________________________________________________
849void AliPIDResponse::SetEMCALPidResponseMaster()
850{
851 //
852 // Load the EMCAL pid response functions from the OADB
853 //
854 TObjArray* fEMCALPIDParamsRun = NULL;
855 TObjArray* fEMCALPIDParamsPass = NULL;
856
857 if(fEMCALPIDParams) return;
858 AliOADBContainer contParams("contParams");
859
860 Int_t statusPars = contParams.InitFromFile(Form("%s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()), "AliEMCALPIDParams");
861 if(statusPars){
862 AliError("Failed initializing PID Params from OADB");
863 }
864 else {
865 AliInfo(Form("Loading EMCAL Params from %s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()));
866
867 fEMCALPIDParamsRun = dynamic_cast<TObjArray *>(contParams.GetObject(fRun));
868 if(fEMCALPIDParamsRun) fEMCALPIDParamsPass = dynamic_cast<TObjArray *>(fEMCALPIDParamsRun->FindObject(Form("pass%d",fRecoPass)));
869 if(fEMCALPIDParamsPass) fEMCALPIDParams = dynamic_cast<TObjArray *>(fEMCALPIDParamsPass->FindObject(Form("EMCALPIDParams_Particles")));
870
871 if(!fEMCALPIDParams){
f8d39067 872 AliInfo(Form("EMCAL Params not found in run %d pass %d", fRun, fRecoPass));
1f631618 873 AliInfo("Will take the standard LHC11d instead ...");
b2138b40 874
1f631618 875 fEMCALPIDParamsRun = dynamic_cast<TObjArray *>(contParams.GetObject(156477));
876 if(fEMCALPIDParamsRun) fEMCALPIDParamsPass = dynamic_cast<TObjArray *>(fEMCALPIDParamsRun->FindObject(Form("pass%d",1)));
b2138b40 877 if(fEMCALPIDParamsPass) fEMCALPIDParams = dynamic_cast<TObjArray *>(fEMCALPIDParamsPass->FindObject(Form("EMCALPIDParams_Particles")));
878
879 if(!fEMCALPIDParams){
1f631618 880 AliError(Form("DEFAULT EMCAL Params (LHC11d) not found in file %s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()));
b2138b40 881 }
882 }
883 }
884}
885
886//______________________________________________________________________________
887void AliPIDResponse::InitializeEMCALResponse(){
888 //
889 // Set PID Params to the EMCAL PID response
890 //
891 fEMCALResponse.SetPIDParams(fEMCALPIDParams);
892
893}
5f8db5fe 894//_________________________________________________________________________
895void AliPIDResponse::SetTOFResponse(AliVEvent *vevent,EStartTimeType_t option){
896 //
897 // Set TOF response function
898 // Input option for event_time used
899 //
900
901 Float_t t0spread = 0.; //vevent->GetEventTimeSpread();
902 if(t0spread < 10) t0spread = 80;
903
904 // T0 from TOF algorithm
905
906 Bool_t flagT0TOF=kFALSE;
907 Bool_t flagT0T0=kFALSE;
908 Float_t *startTime = new Float_t[fTOFResponse.GetNmomBins()];
909 Float_t *startTimeRes = new Float_t[fTOFResponse.GetNmomBins()];
910 Int_t *startTimeMask = new Int_t[fTOFResponse.GetNmomBins()];
911
912 // T0-TOF arrays
913 Float_t *estimatedT0event = new Float_t[fTOFResponse.GetNmomBins()];
914 Float_t *estimatedT0resolution = new Float_t[fTOFResponse.GetNmomBins()];
915 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
916 estimatedT0event[i]=0.0;
917 estimatedT0resolution[i]=0.0;
918 startTimeMask[i] = 0;
919 }
920
921 Float_t resT0A=75,resT0C=65,resT0AC=55;
922 if(vevent->GetT0TOF()){ // check if T0 detector information is available
923 flagT0T0=kTRUE;
924 }
925
926
927 AliTOFHeader *tofHeader = (AliTOFHeader*)vevent->GetTOFHeader();
928
929 if (tofHeader) { // read global info and T0-TOF
930 fTOFResponse.SetTimeResolution(tofHeader->GetTOFResolution());
931 t0spread = tofHeader->GetT0spread(); // read t0 sprad
932 if(t0spread < 10) t0spread = 80;
933
934 flagT0TOF=kTRUE;
935 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ // read T0-TOF default value
936 startTime[i]=tofHeader->GetDefaultEventTimeVal();
937 startTimeRes[i]=tofHeader->GetDefaultEventTimeRes();
938 if(startTimeRes[i] < 1.e-5) startTimeRes[i] = t0spread;
939 }
940
941 TArrayI *ibin=(TArrayI*)tofHeader->GetNvalues();
942 TArrayF *t0Bin=(TArrayF*)tofHeader->GetEventTimeValues();
943 TArrayF *t0ResBin=(TArrayF*)tofHeader->GetEventTimeRes();
944 for(Int_t j=0;j < tofHeader->GetNbins();j++){ // fill T0-TOF in p-bins
945 Int_t icurrent = (Int_t)ibin->GetAt(j);
946 startTime[icurrent]=t0Bin->GetAt(j);
947 startTimeRes[icurrent]=t0ResBin->GetAt(j);
948 if(startTimeRes[icurrent] < 1.e-5) startTimeRes[icurrent] = t0spread;
949 }
950 }
951
952 // for cut of 3 sigma on t0 spread
953 Float_t t0cut = 3 * t0spread;
954 if(t0cut < 500) t0cut = 500;
955
956 if(option == kFILL_T0){ // T0-FILL is used
957 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
958 estimatedT0event[i]=0.0;
959 estimatedT0resolution[i]=t0spread;
960 }
961 fTOFResponse.SetT0event(estimatedT0event);
962 fTOFResponse.SetT0resolution(estimatedT0resolution);
963 }
964
965 if(option == kTOF_T0){ // T0-TOF is used when available (T0-FILL otherwise) from ESD
966 if(flagT0TOF){
967 fTOFResponse.SetT0event(startTime);
968 fTOFResponse.SetT0resolution(startTimeRes);
969 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
970 if(startTimeRes[i]<t0spread) startTimeMask[i]=1;
971 fTOFResponse.SetT0binMask(i,startTimeMask[i]);
972 }
973 }
974 else{
975 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
976 estimatedT0event[i]=0.0;
977 estimatedT0resolution[i]=t0spread;
978 fTOFResponse.SetT0binMask(i,startTimeMask[i]);
979 }
980 fTOFResponse.SetT0event(estimatedT0event);
981 fTOFResponse.SetT0resolution(estimatedT0resolution);
982 }
983 }
984 else if(option == kBest_T0){ // T0-T0 or T0-TOF are used when available (T0-FILL otherwise) from ESD
985 Float_t t0AC=-10000;
986 Float_t t0A=-10000;
987 Float_t t0C=-10000;
988 if(flagT0T0){
989 t0AC= vevent->GetT0TOF()[0];
990 t0A= vevent->GetT0TOF()[1];
991 t0C= vevent->GetT0TOF()[2];
992 }
993
994 Float_t t0t0Best = 0;
995 Float_t t0t0BestRes = 9999;
996 Int_t t0used=0;
997 if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){
998 t0t0Best = t0AC;
999 t0t0BestRes = resT0AC;
1000 t0used=6;
1001 }
1002 else if(TMath::Abs(t0C) < t0cut){
1003 t0t0Best = t0C;
1004 t0t0BestRes = resT0C;
1005 t0used=4;
1006 }
1007 else if(TMath::Abs(t0A) < t0cut){
1008 t0t0Best = t0A;
1009 t0t0BestRes = resT0A;
1010 t0used=2;
1011 }
1012
1013 if(flagT0TOF){ // if T0-TOF info is available
1014 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1015 if(t0t0BestRes < 999){
1016 if(startTimeRes[i] < t0spread){
1017 Double_t wtot = 1./startTimeRes[i]/startTimeRes[i] + 1./t0t0BestRes/t0t0BestRes;
1018 Double_t t0best = startTime[i]/startTimeRes[i]/startTimeRes[i] + t0t0Best/t0t0BestRes/t0t0BestRes;
1019 estimatedT0event[i]=t0best / wtot;
1020 estimatedT0resolution[i]=1./TMath::Sqrt(wtot);
1021 startTimeMask[i] = t0used+1;
1022 }
1023 else {
1024 estimatedT0event[i]=t0t0Best;
1025 estimatedT0resolution[i]=t0t0BestRes;
1026 startTimeMask[i] = t0used;
1027 }
1028 }
1029 else{
1030 estimatedT0event[i]=startTime[i];
1031 estimatedT0resolution[i]=startTimeRes[i];
1032 if(startTimeRes[i]<t0spread) startTimeMask[i]=1;
1033 }
1034 fTOFResponse.SetT0binMask(i,startTimeMask[i]);
1035 }
1036 fTOFResponse.SetT0event(estimatedT0event);
1037 fTOFResponse.SetT0resolution(estimatedT0resolution);
1038 }
1039 else{ // if no T0-TOF info is available
1040 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1041 fTOFResponse.SetT0binMask(i,t0used);
1042 if(t0t0BestRes < 999){
1043 estimatedT0event[i]=t0t0Best;
1044 estimatedT0resolution[i]=t0t0BestRes;
1045 }
1046 else{
1047 estimatedT0event[i]=0.0;
1048 estimatedT0resolution[i]=t0spread;
1049 }
1050 }
1051 fTOFResponse.SetT0event(estimatedT0event);
1052 fTOFResponse.SetT0resolution(estimatedT0resolution);
1053 }
1054 }
1055
1056 else if(option == kT0_T0){ // T0-T0 is used when available (T0-FILL otherwise)
1057 Float_t t0AC=-10000;
1058 Float_t t0A=-10000;
1059 Float_t t0C=-10000;
1060 if(flagT0T0){
1061 t0AC= vevent->GetT0TOF()[0];
1062 t0A= vevent->GetT0TOF()[1];
1063 t0C= vevent->GetT0TOF()[2];
1064 }
1065
1066 if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){
1067 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1068 estimatedT0event[i]=t0AC;
1069 estimatedT0resolution[i]=resT0AC;
1070 fTOFResponse.SetT0binMask(i,6);
1071 }
1072 }
1073 else if(TMath::Abs(t0C) < t0cut){
1074 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1075 estimatedT0event[i]=t0C;
1076 estimatedT0resolution[i]=resT0C;
1077 fTOFResponse.SetT0binMask(i,4);
1078 }
1079 }
1080 else if(TMath::Abs(t0A) < t0cut){
1081 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1082 estimatedT0event[i]=t0A;
1083 estimatedT0resolution[i]=resT0A;
1084 fTOFResponse.SetT0binMask(i,2);
1085 }
1086 }
1087 else{
1088 for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1089 estimatedT0event[i]=0.0;
1090 estimatedT0resolution[i]=t0spread;
1091 fTOFResponse.SetT0binMask(i,0);
1092 }
1093 }
1094 fTOFResponse.SetT0event(estimatedT0event);
1095 fTOFResponse.SetT0resolution(estimatedT0resolution);
1096 }
1097 delete [] startTime;
1098 delete [] startTimeRes;
1099 delete [] startTimeMask;
1100 delete [] estimatedT0event;
1101 delete [] estimatedT0resolution;
1102}