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8c6a71ab | 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 | ||
4f679a16 | 16 | /* $Id$ */ |
17 | ||
8c6a71ab | 18 | //----------------------------------------------------------------- |
19 | // Implementation of the combined PID class | |
4f679a16 | 20 | // For the Event Summary Data Class |
21 | // produced by the reconstruction process | |
22 | // and containing information on the particle identification | |
8c6a71ab | 23 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch |
24 | //----------------------------------------------------------------- | |
25 | ||
f858b00e | 26 | #include "TArrayI.h" |
27 | #include "TArrayF.h" | |
28 | ||
10d100d4 | 29 | #include "AliLog.h" |
30 | #include "AliPID.h" | |
f858b00e | 31 | #include "AliTOFHeader.h" |
8c6a71ab | 32 | #include "AliESDpid.h" |
af885e0f | 33 | #include "AliESDEvent.h" |
8c6a71ab | 34 | #include "AliESDtrack.h" |
35 | ||
36 | ClassImp(AliESDpid) | |
37 | ||
f858b00e | 38 | Int_t AliESDpid::MakePID(AliESDEvent *event, Bool_t TPConly, Float_t timeZeroTOF) const { |
10d100d4 | 39 | // |
40 | // Calculate probabilities for all detectors, except if TPConly==kTRUE | |
41 | // and combine PID | |
42 | // | |
43 | // Option TPConly==kTRUE is used during reconstruction, | |
44 | // because ITS tracking uses TPC pid | |
45 | // HMPID and TRD pid are done in detector reconstructors | |
46 | // | |
47 | ||
48 | /* | |
f858b00e | 49 | Float_t timeZeroTOF = 0; |
10d100d4 | 50 | if (subtractT0) |
f858b00e | 51 | timeZeroTOF = event->GetT0(); |
10d100d4 | 52 | */ |
53 | Int_t nTrk=event->GetNumberOfTracks(); | |
54 | for (Int_t iTrk=0; iTrk<nTrk; iTrk++) { | |
55 | AliESDtrack *track=event->GetTrack(iTrk); | |
56 | MakeTPCPID(track); | |
57 | if (!TPConly) { | |
58 | MakeITSPID(track); | |
f858b00e | 59 | MakeTOFPID(track, timeZeroTOF); |
10d100d4 | 60 | //MakeHMPIDPID(track); |
ce5d6908 | 61 | //MakeTRDPID(track); |
10d100d4 | 62 | } |
63 | CombinePID(track); | |
64 | } | |
65 | return 0; | |
66 | } | |
8c6a71ab | 67 | //_________________________________________________________________________ |
10d100d4 | 68 | void AliESDpid::MakeTPCPID(AliESDtrack *track) const |
8c6a71ab | 69 | { |
4f679a16 | 70 | // |
10d100d4 | 71 | // TPC pid using bethe-bloch and gaussian response |
4f679a16 | 72 | // |
10d100d4 | 73 | if ((track->GetStatus()&AliESDtrack::kTPCin )==0) |
74 | if ((track->GetStatus()&AliESDtrack::kTPCout)==0) return; | |
8c6a71ab | 75 | |
10d100d4 | 76 | Double_t mom = track->GetP(); |
77 | const AliExternalTrackParam *in=track->GetInnerParam(); | |
78 | if (in) mom = in->GetP(); | |
8c6a71ab | 79 | |
10d100d4 | 80 | Double_t p[AliPID::kSPECIES]; |
81 | Double_t dedx=track->GetTPCsignal(); | |
82 | Bool_t mismatch=kTRUE, heavy=kTRUE; | |
8c6a71ab | 83 | |
10d100d4 | 84 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { |
85 | AliPID::EParticleType type=AliPID::EParticleType(j); | |
86 | Double_t bethe=fTPCResponse.GetExpectedSignal(mom,type); | |
87 | Double_t sigma=fTPCResponse.GetExpectedSigma(mom,track->GetTPCsignalN(),type); | |
88 | if (TMath::Abs(dedx-bethe) > fRange*sigma) { | |
89 | p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma; | |
90 | } else { | |
91 | p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma; | |
92 | mismatch=kFALSE; | |
93 | } | |
8c6a71ab | 94 | |
10d100d4 | 95 | // Check for particles heavier than (AliPID::kSPECIES - 1) |
96 | if (dedx < (bethe + fRange*sigma)) heavy=kFALSE; | |
c630aafd | 97 | |
4a78b8c5 | 98 | } |
99 | ||
10d100d4 | 100 | if (mismatch) |
101 | for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1/AliPID::kSPECIES; | |
102 | ||
103 | track->SetTPCpid(p); | |
104 | ||
105 | if (heavy) track->ResetStatus(AliESDtrack::kTPCpid); | |
106 | ||
107 | } | |
108 | //_________________________________________________________________________ | |
109 | void AliESDpid::MakeITSPID(AliESDtrack *track) const | |
110 | { | |
111 | // | |
112 | // ITS PID | |
113 | // Two options, depending on fITSPIDmethod: | |
114 | // 1) Truncated mean method | |
115 | // 2) Likelihood, using charges measured in all 4 layers and | |
116 | // Landau+gaus response functions | |
117 | // | |
118 | ||
119 | if ((track->GetStatus()&AliESDtrack::kITSin)==0 && | |
120 | (track->GetStatus()&AliESDtrack::kITSout)==0) return; | |
121 | ||
122 | Double_t mom=track->GetP(); | |
123 | if (fITSPIDmethod == kITSTruncMean) { | |
124 | Double_t dedx=track->GetITSsignal(); | |
15e979c9 | 125 | Bool_t isSA=kTRUE; |
126 | Double_t momITS=mom; | |
127 | ULong_t trStatus=track->GetStatus(); | |
99daa709 | 128 | if(trStatus&AliESDtrack::kTPCin) isSA=kFALSE; |
15e979c9 | 129 | UChar_t clumap=track->GetITSClusterMap(); |
130 | Int_t nPointsForPid=0; | |
131 | for(Int_t i=2; i<6; i++){ | |
132 | if(clumap&(1<<i)) ++nPointsForPid; | |
133 | } | |
134 | ||
135 | if(nPointsForPid<3) { // track not to be used for combined PID purposes | |
136 | track->ResetStatus(AliESDtrack::kITSpid); | |
137 | return; | |
138 | } | |
139 | ||
10d100d4 | 140 | Double_t p[10]; |
15e979c9 | 141 | |
10d100d4 | 142 | Bool_t mismatch=kTRUE, heavy=kTRUE; |
143 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { | |
144 | Double_t mass=AliPID::ParticleMass(j);//GeV/c^2 | |
15e979c9 | 145 | Double_t bethe=fITSResponse.Bethe(momITS,mass); |
146 | Double_t sigma=fITSResponse.GetResolution(bethe,nPointsForPid,isSA); | |
10d100d4 | 147 | if (TMath::Abs(dedx-bethe) > fRange*sigma) { |
148 | p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma; | |
149 | } else { | |
150 | p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma; | |
151 | mismatch=kFALSE; | |
152 | } | |
153 | ||
154 | // Check for particles heavier than (AliPID::kSPECIES - 1) | |
155 | if (dedx < (bethe + fRange*sigma)) heavy=kFALSE; | |
156 | ||
4a78b8c5 | 157 | } |
c630aafd | 158 | |
10d100d4 | 159 | if (mismatch) |
160 | for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1./AliPID::kSPECIES; | |
161 | ||
162 | track->SetITSpid(p); | |
163 | ||
164 | if (heavy) track->ResetStatus(AliESDtrack::kITSpid); | |
165 | } | |
166 | else { // Likelihood method | |
167 | Double_t condprobfun[AliPID::kSPECIES]; | |
168 | Double_t qclu[4]; | |
169 | track->GetITSdEdxSamples(qclu); | |
170 | fITSResponse.GetITSProbabilities(mom,qclu,condprobfun); | |
171 | track->SetITSpid(condprobfun); | |
8c6a71ab | 172 | } |
7a8614f3 | 173 | |
10d100d4 | 174 | } |
175 | //_________________________________________________________________________ | |
f858b00e | 176 | void AliESDpid::MakeTOFPID(AliESDtrack *track, Float_t /*timeZeroTOF*/) const |
10d100d4 | 177 | { |
178 | // | |
179 | // TOF PID using gaussian response | |
180 | // | |
f858b00e | 181 | |
10d100d4 | 182 | if ((track->GetStatus()&AliESDtrack::kTOFout)==0) return; |
183 | if ((track->GetStatus()&AliESDtrack::kTIME)==0) return; | |
184 | ||
f858b00e | 185 | Int_t ibin = fTOFResponse.GetMomBin(track->GetP()); |
186 | Float_t timezero = fTOFResponse.GetT0bin(ibin); | |
187 | ||
10d100d4 | 188 | Double_t time[AliPID::kSPECIESN]; |
189 | track->GetIntegratedTimes(time); | |
190 | ||
191 | Double_t sigma[AliPID::kSPECIES]; | |
192 | for (Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++) { | |
193 | sigma[iPart] = fTOFResponse.GetExpectedSigma(track->GetP(),time[iPart],AliPID::ParticleMass(iPart)); | |
194 | } | |
195 | ||
196 | AliDebugGeneral("AliESDpid::MakeTOFPID",2, | |
197 | Form("Expected TOF signals [ps]: %f %f %f %f %f", | |
198 | time[AliPID::kElectron], | |
199 | time[AliPID::kMuon], | |
200 | time[AliPID::kPion], | |
201 | time[AliPID::kKaon], | |
202 | time[AliPID::kProton])); | |
203 | ||
204 | AliDebugGeneral("AliESDpid::MakeTOFPID",2, | |
205 | Form("Expected TOF std deviations [ps]: %f %f %f %f %f", | |
206 | sigma[AliPID::kElectron], | |
207 | sigma[AliPID::kMuon], | |
208 | sigma[AliPID::kPion], | |
209 | sigma[AliPID::kKaon], | |
210 | sigma[AliPID::kProton] | |
211 | )); | |
212 | ||
f858b00e | 213 | Double_t tof = track->GetTOFsignal() - timezero; |
10d100d4 | 214 | |
215 | Double_t p[AliPID::kSPECIES]; | |
216 | Bool_t mismatch = kTRUE, heavy = kTRUE; | |
217 | for (Int_t j=0; j<AliPID::kSPECIES; j++) { | |
218 | Double_t sig = sigma[j]; | |
f858b00e | 219 | if (TMath::Abs(tof-time[j]) > (fRange+2)*sig) { |
220 | p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig; | |
10d100d4 | 221 | } else |
222 | p[j] = TMath::Exp(-0.5*(tof-time[j])*(tof-time[j])/(sig*sig))/sig; | |
223 | ||
224 | // Check the mismatching | |
225 | Double_t mass = AliPID::ParticleMass(j); | |
226 | Double_t pm = fTOFResponse.GetMismatchProbability(track->GetP(),mass); | |
227 | if (p[j]>pm) mismatch = kFALSE; | |
228 | ||
229 | // Check for particles heavier than (AliPID::kSPECIES - 1) | |
230 | if (tof < (time[j] + fRange*sig)) heavy=kFALSE; | |
231 | ||
232 | } | |
233 | ||
234 | if (mismatch) | |
235 | for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1/AliPID::kSPECIES; | |
236 | ||
237 | track->SetTOFpid(p); | |
238 | ||
239 | if (heavy) track->ResetStatus(AliESDtrack::kTOFpid); | |
7170298c | 240 | if (!CheckTOFMatching(track)) track->SetStatus(AliESDtrack::kTOFmismatch); |
f858b00e | 241 | |
10d100d4 | 242 | } |
243 | //_________________________________________________________________________ | |
b439f460 | 244 | void AliESDpid::MakeTRDPID(AliESDtrack *track) const |
245 | { | |
246 | // | |
247 | // Method to recalculate the TRD PID probabilities | |
248 | // | |
249 | if((track->GetStatus()&AliESDtrack::kTRDout)==0) return; | |
250 | Double_t prob[AliPID::kSPECIES]; Float_t mom[6]; | |
251 | Double_t dedx[48]; // Allocate space for the maximum number of TRD slices | |
252 | for(Int_t ilayer = 0; ilayer < 6; ilayer++){ | |
253 | mom[ilayer] = track->GetTRDmomentum(ilayer); | |
254 | for(Int_t islice = 0; islice < track->GetNumberOfTRDslices(); islice++){ | |
255 | dedx[ilayer*track->GetNumberOfTRDslices()+islice] = track->GetTRDslice(ilayer, islice); | |
256 | } | |
257 | } | |
258 | fTRDResponse.GetResponse(track->GetNumberOfTRDslices(), dedx, mom, prob); | |
259 | track->SetTRDpid(prob); | |
260 | } | |
261 | //_________________________________________________________________________ | |
10d100d4 | 262 | void AliESDpid::CombinePID(AliESDtrack *track) const |
263 | { | |
264 | // | |
265 | // Combine the information of various detectors | |
266 | // to determine the Particle Identification | |
267 | // | |
268 | Int_t ns=AliPID::kSPECIES; | |
269 | Double_t p[10]={1.,1.,1.,1.,1.,1.,1.,1.,1.,1.}; | |
270 | ||
271 | if (track->IsOn(AliESDtrack::kITSpid)) { | |
272 | Double_t d[10]; | |
273 | track->GetITSpid(d); | |
274 | for (Int_t j=0; j<ns; j++) p[j]*=d[j]; | |
275 | } | |
276 | ||
277 | if (track->IsOn(AliESDtrack::kTPCpid)) { | |
278 | Double_t d[10]; | |
279 | track->GetTPCpid(d); | |
280 | for (Int_t j=0; j<ns; j++) p[j]*=d[j]; | |
281 | } | |
282 | ||
283 | if (track->IsOn(AliESDtrack::kTRDpid)) { | |
284 | Double_t d[10]; | |
285 | track->GetTRDpid(d); | |
286 | for (Int_t j=0; j<ns; j++) p[j]*=d[j]; | |
287 | } | |
288 | ||
289 | if (track->IsOn(AliESDtrack::kTOFpid)) { | |
290 | Double_t d[10]; | |
291 | track->GetTOFpid(d); | |
292 | for (Int_t j=0; j<ns; j++) p[j]*=d[j]; | |
293 | } | |
294 | ||
295 | if (track->IsOn(AliESDtrack::kHMPIDpid)) { | |
296 | Double_t d[10]; | |
297 | track->GetHMPIDpid(d); | |
298 | for (Int_t j=0; j<ns; j++) p[j]*=d[j]; | |
299 | } | |
300 | ||
301 | track->SetESDpid(p); | |
8c6a71ab | 302 | } |
f858b00e | 303 | //_________________________________________________________________________ |
304 | Bool_t AliESDpid::CheckTOFMatching(AliESDtrack *track) const{ | |
305 | Bool_t status = kFALSE; | |
306 | ||
307 | Double_t exptimes[5]; | |
308 | track->GetIntegratedTimes(exptimes); | |
309 | ||
f858b00e | 310 | Float_t p = track->P(); |
311 | ||
7170298c | 312 | Float_t dedx = track->GetTPCsignal(); |
313 | Float_t time = track->GetTOFsignal() - fTOFResponse.GetStartTime(p); | |
314 | ||
f858b00e | 315 | Double_t ptpc[3]; |
316 | track->GetInnerPxPyPz(ptpc); | |
317 | Float_t momtpc=TMath::Sqrt(ptpc[0]*ptpc[0] + ptpc[1]*ptpc[1] + ptpc[2]*ptpc[2]); | |
318 | ||
319 | for(Int_t i=0;i < 5;i++){ | |
320 | AliPID::EParticleType type=AliPID::EParticleType(i); | |
321 | ||
322 | Float_t resolutionTOF = fTOFResponse.GetExpectedSigma(p, exptimes[i], AliPID::ParticleMass(i)); | |
323 | if(TMath::Abs(exptimes[i] - time) < fRange * resolutionTOF){ | |
324 | Float_t dedxExp = fTPCResponse.GetExpectedSignal(momtpc,type); | |
325 | Float_t resolutionTPC = fTPCResponse.GetExpectedSigma(momtpc,track->GetTPCsignalN(),type); | |
326 | ||
7170298c | 327 | if(TMath::Abs(dedx - dedxExp) < fRangeTOFMismatch * resolutionTPC){ |
f858b00e | 328 | status = kTRUE; |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | // for nuclei | |
c1252298 | 334 | Float_t resolutionTOFpr = fTOFResponse.GetExpectedSigma(p, exptimes[4], AliPID::ParticleMass(4)); |
335 | if(!status && (exptimes[4] + fRange*resolutionTOFpr < time)) status = kTRUE; | |
f858b00e | 336 | |
337 | ||
338 | return status; | |
339 | } | |
340 | //_________________________________________________________________________ | |
341 | void AliESDpid::SetTOFResponse(AliESDEvent *event,EStartTimeType_t option){ | |
342 | // | |
343 | // Set TOF response function | |
344 | // Input option for event_time used | |
345 | // | |
346 | ||
347 | Float_t t0spread = 0.; //event->GetEventTimeSpread(); | |
348 | if(t0spread < 10) t0spread = 80; | |
349 | ||
350 | // T0 from TOF algorithm | |
f858b00e | 351 | |
352 | Bool_t flagT0TOF=kFALSE; | |
353 | Bool_t flagT0T0=kFALSE; | |
2f43a5ff | 354 | Float_t *startTime = new Float_t[fTOFResponse.GetNmomBins()]; |
355 | Float_t *startTimeRes = new Float_t[fTOFResponse.GetNmomBins()]; | |
d4d15b21 | 356 | Int_t *startTimeMask = new Int_t[fTOFResponse.GetNmomBins()]; |
f858b00e | 357 | |
7eb68cb5 | 358 | // T0-TOF arrays |
2f43a5ff | 359 | Float_t *estimatedT0event = new Float_t[fTOFResponse.GetNmomBins()]; |
360 | Float_t *estimatedT0resolution = new Float_t[fTOFResponse.GetNmomBins()]; | |
f858b00e | 361 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ |
362 | estimatedT0event[i]=0.0; | |
363 | estimatedT0resolution[i]=0.0; | |
d4d15b21 | 364 | startTimeMask[i] = 0; |
f858b00e | 365 | } |
366 | ||
7eb68cb5 | 367 | Float_t resT0A=75,resT0C=65,resT0AC=55; |
368 | if(event->GetT0TOF()){ // check if T0 detector information is available | |
f858b00e | 369 | flagT0T0=kTRUE; |
370 | } | |
371 | ||
372 | ||
373 | AliTOFHeader *tofHeader =(AliTOFHeader*)event->GetTOFHeader(); | |
374 | ||
7eb68cb5 | 375 | if(tofHeader){ // read global info and T0-TOF info from ESD |
4d197ca4 | 376 | fTOFResponse.SetTimeResolution(tofHeader->GetTOFResolution()); |
7eb68cb5 | 377 | t0spread = tofHeader->GetT0spread(); // read t0 sprad |
4d197ca4 | 378 | if(t0spread < 10) t0spread = 80; |
f858b00e | 379 | |
380 | flagT0TOF=kTRUE; | |
7eb68cb5 | 381 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ // read T0-TOF default value |
382 | startTime[i]=tofHeader->GetDefaultEventTimeVal(); | |
383 | startTimeRes[i]=tofHeader->GetDefaultEventTimeRes(); | |
f858b00e | 384 | } |
385 | ||
386 | TArrayI *ibin=tofHeader->GetNvalues(); | |
387 | TArrayF *t0Bin=tofHeader->GetEventTimeValues(); | |
388 | TArrayF *t0ResBin=tofHeader->GetEventTimeRes(); | |
7eb68cb5 | 389 | for(Int_t j=0;j < tofHeader->GetNbins();j++){ // fill T0-TOF in p-bins |
f858b00e | 390 | Int_t icurrent = (Int_t)ibin->GetAt(j); |
7eb68cb5 | 391 | startTime[icurrent]=t0Bin->GetAt(j); |
392 | startTimeRes[icurrent]=t0ResBin->GetAt(j); | |
f858b00e | 393 | } |
394 | } | |
395 | ||
7eb68cb5 | 396 | // for cut of 3 sigma on t0 spread |
397 | Float_t t0cut = 3 * t0spread; | |
398 | if(t0cut < 500) t0cut = 500; | |
399 | ||
f858b00e | 400 | if(option == kFILL_T0){ // T0-FILL is used |
401 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ | |
402 | estimatedT0event[i]=0.0; | |
403 | estimatedT0resolution[i]=t0spread; | |
f858b00e | 404 | } |
405 | fTOFResponse.SetT0event(estimatedT0event); | |
406 | fTOFResponse.SetT0resolution(estimatedT0resolution); | |
407 | } | |
7eb68cb5 | 408 | |
f858b00e | 409 | if(option == kTOF_T0){ // T0-TOF is used when available (T0-FILL otherwise) from ESD |
410 | if(flagT0TOF){ | |
f858b00e | 411 | fTOFResponse.SetT0event(startTime); |
412 | fTOFResponse.SetT0resolution(startTimeRes); | |
d4d15b21 | 413 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ |
414 | if(startTimeRes[i]<t0spread) startTimeMask[i]=1; | |
415 | fTOFResponse.SetT0binMask(i,startTimeMask[i]); | |
416 | } | |
f858b00e | 417 | } |
418 | else{ | |
419 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ | |
420 | estimatedT0event[i]=0.0; | |
421 | estimatedT0resolution[i]=t0spread; | |
d4d15b21 | 422 | fTOFResponse.SetT0binMask(i,startTimeMask[i]); |
f858b00e | 423 | } |
424 | fTOFResponse.SetT0event(estimatedT0event); | |
425 | fTOFResponse.SetT0resolution(estimatedT0resolution); | |
426 | } | |
427 | } | |
d4d15b21 | 428 | else if(option == kBest_T0){ // T0-T0 or T0-TOF are used when available (T0-FILL otherwise) from ESD |
f858b00e | 429 | Float_t t0AC=-10000; |
430 | Float_t t0A=-10000; | |
431 | Float_t t0C=-10000; | |
432 | if(flagT0T0){ | |
433 | t0AC= event->GetT0TOF()[0]; | |
434 | t0A= event->GetT0TOF()[1]; | |
435 | t0C= event->GetT0TOF()[2]; | |
436 | } | |
437 | ||
438 | Float_t t0t0Best = 0; | |
439 | Float_t t0t0BestRes = 9999; | |
d4d15b21 | 440 | Int_t t0used=0; |
7eb68cb5 | 441 | if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){ |
f858b00e | 442 | t0t0Best = t0AC; |
7eb68cb5 | 443 | t0t0BestRes = resT0AC; |
d4d15b21 | 444 | t0used=6; |
f858b00e | 445 | } |
7eb68cb5 | 446 | else if(TMath::Abs(t0C) < t0cut){ |
f858b00e | 447 | t0t0Best = t0C; |
7eb68cb5 | 448 | t0t0BestRes = resT0C; |
d4d15b21 | 449 | t0used=4; |
7eb68cb5 | 450 | } |
451 | else if(TMath::Abs(t0A) < t0cut){ | |
452 | t0t0Best = t0A; | |
453 | t0t0BestRes = resT0A; | |
d4d15b21 | 454 | t0used=2; |
f858b00e | 455 | } |
456 | ||
457 | if(flagT0TOF){ // if T0-TOF info is available | |
458 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ | |
7eb68cb5 | 459 | if(t0t0BestRes < 999){ |
460 | if(startTimeRes[i] < t0spread){ | |
f858b00e | 461 | Double_t wtot = 1./startTimeRes[i]/startTimeRes[i] + 1./t0t0BestRes/t0t0BestRes; |
462 | Double_t t0best = startTime[i]/startTimeRes[i]/startTimeRes[i] + t0t0Best/t0t0BestRes/t0t0BestRes; | |
463 | estimatedT0event[i]=t0best / wtot; | |
464 | estimatedT0resolution[i]=1./TMath::Sqrt(wtot); | |
d4d15b21 | 465 | startTimeMask[i] = t0used+1; |
f858b00e | 466 | } |
467 | else { | |
468 | estimatedT0event[i]=t0t0Best; | |
469 | estimatedT0resolution[i]=t0t0BestRes; | |
d4d15b21 | 470 | startTimeMask[i] = t0used; |
f858b00e | 471 | } |
472 | } | |
473 | else{ | |
474 | estimatedT0event[i]=startTime[i]; | |
475 | estimatedT0resolution[i]=startTimeRes[i]; | |
d4d15b21 | 476 | if(startTimeRes[i]<t0spread) startTimeMask[i]=1; |
f858b00e | 477 | } |
d4d15b21 | 478 | fTOFResponse.SetT0binMask(i,startTimeMask[i]); |
f858b00e | 479 | } |
480 | fTOFResponse.SetT0event(estimatedT0event); | |
481 | fTOFResponse.SetT0resolution(estimatedT0resolution); | |
482 | } | |
483 | else{ // if no T0-TOF info is available | |
484 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ | |
d4d15b21 | 485 | fTOFResponse.SetT0binMask(i,t0used); |
486 | if(t0t0BestRes < 999){ | |
487 | estimatedT0event[i]=t0t0Best; | |
488 | estimatedT0resolution[i]=t0t0BestRes; | |
489 | } | |
490 | else{ | |
491 | estimatedT0event[i]=0.0; | |
492 | estimatedT0resolution[i]=t0spread; | |
493 | } | |
f858b00e | 494 | } |
495 | fTOFResponse.SetT0event(estimatedT0event); | |
496 | fTOFResponse.SetT0resolution(estimatedT0resolution); | |
497 | } | |
498 | } | |
7eb68cb5 | 499 | |
d4d15b21 | 500 | else if(option == kT0_T0){ // T0-T0 is used when available (T0-FILL otherwise) from ESD |
f858b00e | 501 | Float_t t0AC=-10000; |
502 | Float_t t0A=-10000; | |
503 | Float_t t0C=-10000; | |
504 | if(flagT0T0){ | |
505 | t0AC= event->GetT0TOF()[0]; | |
506 | t0A= event->GetT0TOF()[1]; | |
507 | t0C= event->GetT0TOF()[2]; | |
508 | } | |
509 | ||
7eb68cb5 | 510 | if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){ |
f858b00e | 511 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ |
512 | estimatedT0event[i]=t0AC; | |
7eb68cb5 | 513 | estimatedT0resolution[i]=resT0AC; |
d4d15b21 | 514 | fTOFResponse.SetT0binMask(i,6); |
f858b00e | 515 | } |
516 | } | |
7eb68cb5 | 517 | else if(TMath::Abs(t0C) < t0cut){ |
f858b00e | 518 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ |
7eb68cb5 | 519 | estimatedT0event[i]=t0C; |
520 | estimatedT0resolution[i]=resT0C; | |
d4d15b21 | 521 | fTOFResponse.SetT0binMask(i,4); |
f858b00e | 522 | } |
523 | } | |
7eb68cb5 | 524 | else if(TMath::Abs(t0A) < t0cut){ |
f858b00e | 525 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ |
7eb68cb5 | 526 | estimatedT0event[i]=t0A; |
527 | estimatedT0resolution[i]=resT0A; | |
d4d15b21 | 528 | fTOFResponse.SetT0binMask(i,2); |
f858b00e | 529 | } |
530 | } | |
531 | else{ | |
532 | for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ | |
533 | estimatedT0event[i]=0.0; | |
534 | estimatedT0resolution[i]=t0spread; | |
d4d15b21 | 535 | fTOFResponse.SetT0binMask(i,0); |
f858b00e | 536 | } |
537 | } | |
538 | fTOFResponse.SetT0event(estimatedT0event); | |
539 | fTOFResponse.SetT0resolution(estimatedT0resolution); | |
540 | } | |
2f43a5ff | 541 | delete [] startTime; |
542 | delete [] startTimeRes; | |
d4d15b21 | 543 | delete [] startTimeMask; |
2f43a5ff | 544 | delete [] estimatedT0event; |
545 | delete [] estimatedT0resolution; | |
f858b00e | 546 | } |