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93fc2389 | 1 | |
d9950a5a | 2 | /************************************************************************** |
3 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
17 | /* $Id$ */ | |
18 | ||
e2a1c98b | 19 | #include "TVectorT.h" |
203967fc | 20 | #include "AliLog.h" |
eb38ed55 | 21 | #include "AliESDtrack.h" |
41880fac | 22 | #include "AliTracker.h" |
eb38ed55 | 23 | |
d9950a5a | 24 | #include "AliTRDtrackV1.h" |
25 | #include "AliTRDcluster.h" | |
26 | #include "AliTRDcalibDB.h" | |
3afdab72 | 27 | #include "AliTRDReconstructor.h" |
9dcc64cc | 28 | #include "AliTRDPIDResponse.h" |
d9950a5a | 29 | #include "AliTRDrecoParam.h" |
e2a1c98b | 30 | #include "AliTRDdEdxUtils.h" |
d9950a5a | 31 | |
d9950a5a | 32 | ClassImp(AliTRDtrackV1) |
33 | ||
0906e73e | 34 | /////////////////////////////////////////////////////////////////////////////// |
35 | // // | |
36 | // Represents a reconstructed TRD track // | |
37 | // Local TRD Kalman track // | |
38 | // // | |
39 | // Authors: // | |
40 | // Alex Bercuci <A.Bercuci@gsi.de> // | |
41 | // Markus Fasel <M.Fasel@gsi.de> // | |
42 | // // | |
43 | /////////////////////////////////////////////////////////////////////////////// | |
d9950a5a | 44 | |
45 | //_______________________________________________________________ | |
3b57a3f7 | 46 | AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack() |
eb2b4f91 | 47 | ,fStatus(0) |
352cef8f | 48 | ,fESDid(0) |
3b57a3f7 | 49 | ,fDE(0.) |
e2a1c98b | 50 | ,fTruncatedMean(0) |
4d6aee34 | 51 | ,fkReconstructor(NULL) |
52 | ,fBackupTrack(NULL) | |
53 | ,fTrackLow(NULL) | |
54 | ,fTrackHigh(NULL) | |
0906e73e | 55 | { |
d9950a5a | 56 | // |
57 | // Default constructor | |
58 | // | |
6e49cfdb | 59 | //printf("AliTRDtrackV1::AliTRDtrackV1()\n"); |
e44586fb | 60 | |
3b57a3f7 | 61 | for(int i =0; i<3; i++) fBudget[i] = 0.; |
62 | ||
63 | Float_t pid = 1./AliPID::kSPECIES; | |
64 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
65 | ||
66 | for(int ip=0; ip<kNplane; ip++){ | |
17896e82 | 67 | fTrackletIndex[ip] = -1; |
4d6aee34 | 68 | fTracklet[ip] = NULL; |
3b57a3f7 | 69 | } |
d9950a5a | 70 | } |
71 | ||
72 | //_______________________________________________________________ | |
3b57a3f7 | 73 | AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref) |
eb2b4f91 | 74 | ,fStatus(ref.fStatus) |
352cef8f | 75 | ,fESDid(ref.fESDid) |
3b57a3f7 | 76 | ,fDE(ref.fDE) |
e2a1c98b | 77 | ,fTruncatedMean(ref.fTruncatedMean) |
4d6aee34 | 78 | ,fkReconstructor(ref.fkReconstructor) |
79 | ,fBackupTrack(NULL) | |
80 | ,fTrackLow(NULL) | |
81 | ,fTrackHigh(NULL) | |
d9950a5a | 82 | { |
83 | // | |
3b57a3f7 | 84 | // Copy constructor |
d9950a5a | 85 | // |
86 | ||
6e49cfdb | 87 | //printf("AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &)\n"); |
29b87567 | 88 | SetBit(kOwner, kFALSE); |
3b57a3f7 | 89 | for(int ip=0; ip<kNplane; ip++){ |
90 | fTrackletIndex[ip] = ref.fTrackletIndex[ip]; | |
91 | fTracklet[ip] = ref.fTracklet[ip]; | |
92 | } | |
e3cf3d02 | 93 | if(ref.fTrackLow) fTrackLow = new AliExternalTrackParam(*ref.fTrackLow); |
94 | if(ref.fTrackHigh) fTrackHigh = new AliExternalTrackParam(*ref.fTrackHigh); | |
95 | ||
3b57a3f7 | 96 | for (Int_t i = 0; i < 3;i++) fBudget[i] = ref.fBudget[i]; |
97 | ||
98 | for(Int_t is = 0; is<AliPID::kSPECIES; is++) fPID[is] = ref.fPID[is]; | |
99 | ||
100 | AliKalmanTrack::SetNumberOfClusters(ref.GetNumberOfClusters()); | |
d9950a5a | 101 | } |
102 | ||
103 | //_______________________________________________________________ | |
3b57a3f7 | 104 | AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack() |
eb2b4f91 | 105 | ,fStatus(0) |
352cef8f | 106 | ,fESDid(0) |
3b57a3f7 | 107 | ,fDE(0.) |
e2a1c98b | 108 | ,fTruncatedMean(0) |
4d6aee34 | 109 | ,fkReconstructor(NULL) |
110 | ,fBackupTrack(NULL) | |
111 | ,fTrackLow(NULL) | |
112 | ,fTrackHigh(NULL) | |
d9950a5a | 113 | { |
114 | // | |
3b57a3f7 | 115 | // Constructor from AliESDtrack |
d9950a5a | 116 | // |
117 | ||
352cef8f | 118 | SetESDid(t.GetID()); |
3b57a3f7 | 119 | SetLabel(t.GetLabel()); |
120 | SetChi2(0.0); | |
0b433f72 | 121 | |
35315297 | 122 | SetMass(t.GetMass(kTRUE)); |
3b57a3f7 | 123 | AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls()); |
17896e82 | 124 | Int_t ti[]={-1, -1, -1, -1, -1, -1}; t.GetTRDtracklets(&ti[0]); |
3b57a3f7 | 125 | for(int ip=0; ip<kNplane; ip++){ |
17896e82 | 126 | fTrackletIndex[ip] = ti[ip]; |
4d6aee34 | 127 | fTracklet[ip] = NULL; |
3b57a3f7 | 128 | } |
129 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
130 | ||
131 | Float_t pid = 1./AliPID::kSPECIES; | |
132 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
133 | ||
134 | const AliExternalTrackParam *par = &t; | |
135 | if (t.GetStatus() & AliESDtrack::kTRDbackup) { | |
136 | par = t.GetOuterParam(); | |
137 | if (!par) { | |
138 | AliError("No backup info!"); | |
139 | par = &t; | |
140 | } | |
141 | } | |
142 | Set(par->GetX() | |
143 | ,par->GetAlpha() | |
144 | ,par->GetParameter() | |
145 | ,par->GetCovariance()); | |
146 | ||
147 | if(t.GetStatus() & AliESDtrack::kTIME) { | |
148 | StartTimeIntegral(); | |
149 | Double_t times[10]; | |
150 | t.GetIntegratedTimes(times); | |
151 | SetIntegratedTimes(times); | |
152 | SetIntegratedLength(t.GetIntegratedLength()); | |
153 | } | |
d9950a5a | 154 | } |
155 | ||
d9950a5a | 156 | //_______________________________________________________________ |
e17f4785 | 157 | AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15] |
3b57a3f7 | 158 | , Double_t x, Double_t alpha) : AliKalmanTrack() |
eb2b4f91 | 159 | ,fStatus(0) |
352cef8f | 160 | ,fESDid(0) |
3b57a3f7 | 161 | ,fDE(0.) |
e2a1c98b | 162 | ,fTruncatedMean(0) |
4d6aee34 | 163 | ,fkReconstructor(NULL) |
164 | ,fBackupTrack(NULL) | |
165 | ,fTrackLow(NULL) | |
166 | ,fTrackHigh(NULL) | |
d9950a5a | 167 | { |
0906e73e | 168 | // |
169 | // The stand alone tracking constructor | |
170 | // TEMPORARY !!!!!!!!!!! | |
171 | // to check : | |
172 | // 1. covariance matrix | |
173 | // 2. dQdl calculation | |
174 | // | |
d9950a5a | 175 | |
68f9b6bd | 176 | Double_t b(GetBz()); |
177 | Double_t cnv = (TMath::Abs(b) < 1.e-5) ? 1.e5 : 1./GetBz()/kB2C; | |
178 | ||
d9950a5a | 179 | Double_t pp[5] = { p[0] |
68f9b6bd | 180 | , p[1] |
181 | , p[2] | |
182 | , p[3] | |
183 | , p[4]*cnv }; | |
184 | ||
d9950a5a | 185 | Double_t c22 = x*x*cov[14] - 2*x*cov[12] + cov[ 5]; |
186 | Double_t c32 = x*cov[13] - cov[ 8]; | |
187 | Double_t c20 = x*cov[10] - cov[ 3]; | |
188 | Double_t c21 = x*cov[11] - cov[ 4]; | |
189 | Double_t c42 = x*cov[14] - cov[12]; | |
68f9b6bd | 190 | |
d9950a5a | 191 | Double_t cc[15] = { cov[ 0] |
192 | , cov[ 1], cov[ 2] | |
193 | , c20, c21, c22 | |
194 | , cov[ 6], cov[ 7], c32, cov[ 9] | |
195 | , cov[10]*cnv, cov[11]*cnv, c42*cnv, cov[13]*cnv, cov[14]*cnv*cnv }; | |
68f9b6bd | 196 | |
ae3fbe1f | 197 | Double_t mostProbablePt=AliExternalTrackParam::GetMostProbablePt(); |
198 | Double_t p0=TMath::Sign(1/mostProbablePt,pp[4]); | |
199 | Double_t w0=cc[14]/(cc[14] + p0*p0), w1=p0*p0/(cc[14] + p0*p0); | |
68f9b6bd | 200 | AliDebug(3, Form("Pt mixing : w0[%4.2f] pt0[%5.3f] w1[%4.2f] pt[%5.3f]", w0, 1./p0, w1, 1./pp[4])); |
201 | ||
ae3fbe1f | 202 | pp[4] = w0*p0 + w1*pp[4]; |
203 | cc[10]*=w1; cc[11]*=w1; cc[12]*=w1; cc[13]*=w1; cc[14]*=w1; | |
68f9b6bd | 204 | Set(x,alpha,pp,cc); |
0217fcd0 | 205 | AliDebug(2, Form("Init @ x[%6.2f] pt[%5.3f]", x, 1./pp[4])); |
41702fec | 206 | Int_t ncls = 0; |
68f9b6bd | 207 | for(int iplane=0; iplane<kNplane; iplane++){ |
17896e82 | 208 | fTrackletIndex[iplane] = -1; |
68f9b6bd | 209 | if(!trklts[iplane].IsOK()) fTracklet[iplane] = NULL; |
41702fec | 210 | else{ |
e17f4785 | 211 | fTracklet[iplane] = &trklts[iplane]; |
41702fec | 212 | ncls += fTracklet[iplane]->GetN(); |
213 | } | |
68f9b6bd | 214 | } |
41702fec | 215 | AliKalmanTrack::SetNumberOfClusters(ncls); |
216 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
217 | ||
218 | Float_t pid = 1./AliPID::kSPECIES; | |
219 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
d9950a5a | 220 | } |
221 | ||
bb56afff | 222 | //_______________________________________________________________ |
3b57a3f7 | 223 | AliTRDtrackV1::~AliTRDtrackV1() |
bb56afff | 224 | { |
4d8f1bd9 | 225 | // Clean up all objects allocated by the track during its lifetime. |
226 | AliDebug(2, Form("Deleting track[%d]\n fBackupTrack[%p] fTrackLow[%p] fTrackHigh[%p] Owner[%c].", fESDid, (void*)fBackupTrack, (void*)fTrackLow, (void*)fTrackHigh, TestBit(kOwner)?'y':'n')); | |
76b60503 | 227 | |
4d6aee34 | 228 | if(fBackupTrack) delete fBackupTrack; fBackupTrack = NULL; |
e3cf3d02 | 229 | |
4d6aee34 | 230 | if(fTrackLow) delete fTrackLow; fTrackLow = NULL; |
231 | if(fTrackHigh) delete fTrackHigh; fTrackHigh = NULL; | |
bb56afff | 232 | |
76b60503 | 233 | for(Int_t ip=0; ip<kNplane; ip++){ |
234 | if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip]; | |
4d6aee34 | 235 | fTracklet[ip] = NULL; |
17896e82 | 236 | fTrackletIndex[ip] = -1; |
3b57a3f7 | 237 | } |
238 | } | |
239 | ||
e08a5492 | 240 | //_______________________________________________________________ |
241 | AliTRDtrackV1 &AliTRDtrackV1::operator=(const AliTRDtrackV1 &t) | |
242 | { | |
243 | // | |
244 | // Assignment operator | |
245 | // | |
246 | ||
247 | if (this != &t) { | |
5c5d503a | 248 | AliKalmanTrack::operator=(t); |
e08a5492 | 249 | ((AliTRDtrackV1 &) t).Copy(*this); |
250 | } | |
251 | ||
252 | return *this; | |
253 | ||
254 | } | |
255 | ||
256 | //_____________________________________________________________________________ | |
257 | void AliTRDtrackV1::Copy(TObject &t) const | |
258 | { | |
259 | // | |
260 | // Copy function | |
261 | // | |
262 | ||
263 | ((AliTRDtrackV1 &) t).fStatus = fStatus; | |
264 | ((AliTRDtrackV1 &) t).fESDid = fESDid; | |
265 | ((AliTRDtrackV1 &) t).fDE = fDE; | |
266 | ((AliTRDtrackV1 &) t).fkReconstructor = fkReconstructor; | |
267 | ((AliTRDtrackV1 &) t).fBackupTrack = 0x0; | |
268 | ((AliTRDtrackV1 &) t).fTrackLow = 0x0; | |
269 | ((AliTRDtrackV1 &) t).fTrackHigh = 0x0; | |
270 | ||
271 | for(Int_t ip = 0; ip < kNplane; ip++) { | |
272 | ((AliTRDtrackV1 &) t).fTrackletIndex[ip] = fTrackletIndex[ip]; | |
273 | ((AliTRDtrackV1 &) t).fTracklet[ip] = fTracklet[ip]; | |
274 | } | |
275 | if (fTrackLow) { | |
276 | ((AliTRDtrackV1 &) t).fTrackLow = new AliExternalTrackParam(*fTrackLow); | |
277 | } | |
278 | if (fTrackHigh){ | |
279 | ((AliTRDtrackV1 &) t).fTrackHigh = new AliExternalTrackParam(*fTrackHigh); | |
280 | } | |
281 | ||
282 | for (Int_t i = 0; i < 3; i++) { | |
283 | ((AliTRDtrackV1 &) t).fBudget[i] = fBudget[i]; | |
284 | } | |
285 | for (Int_t is = 0; is < AliPID::kSPECIES; is++) { | |
286 | ((AliTRDtrackV1 &) t).fPID[is] = fPID[is]; | |
287 | } | |
288 | ||
289 | } | |
290 | ||
3b57a3f7 | 291 | //_______________________________________________________________ |
e73baf29 | 292 | Int_t AliTRDtrackV1::CookLabel(Float_t wrong, Int_t *labs, Float_t *freq) |
3b57a3f7 | 293 | { |
e73baf29 | 294 | // Set MC label for this track |
295 | // On demand i.e. if arrays "labs" and "freq" are allocated by user returns : | |
296 | // nlabs = the no of distinct labels | |
297 | // labs = array of distinct labels in decreasing order of frequency | |
298 | // freq = frequency of each label in decreasing order | |
bb2db46c | 299 | |
e73baf29 | 300 | Int_t ncl(0); |
301 | if(!(ncl = GetNumberOfClusters())) return 0; | |
302 | ||
303 | Int_t s[2][kMAXCLUSTERSPERTRACK]; | |
bb56afff | 304 | for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) { |
e73baf29 | 305 | s[0][i] = -1; |
306 | s[1][i] = 0; | |
bb56afff | 307 | } |
e73baf29 | 308 | |
309 | Int_t label(-123456789), nlabels(0); | |
310 | AliTRDcluster *c(NULL); | |
311 | for (Int_t ip(0); ip < AliTRDgeometry::kNlayer; ip++) { | |
68f9b6bd | 312 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
e73baf29 | 313 | for (Int_t ic(0); ic < AliTRDseedV1::kNclusters; ic++) { |
3b57a3f7 | 314 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
e73baf29 | 315 | for (Int_t k(0); k < 3; k++) { |
316 | if ((label = c->GetLabel(k)) < 0) continue; | |
317 | Int_t j(0); | |
318 | while(j < kMAXCLUSTERSPERTRACK){ | |
319 | if(s[0][j]!=label && s[1][j]!=0){j++; continue;} | |
320 | if(!s[1][j]) nlabels++; | |
321 | s[0][j] = label; s[1][j]++; | |
322 | break; | |
3b57a3f7 | 323 | } |
324 | } | |
325 | } | |
326 | } | |
e73baf29 | 327 | //printf(" Found %4d labels\n", nlabels); |
328 | Float_t prob(1.); | |
329 | if(!nlabels){ | |
330 | AliError(Form("No MC labels found for track %d.", fESDid)); | |
331 | return 0; | |
332 | } else if(nlabels==1) { | |
333 | label = s[0][0]; | |
334 | if(labs && freq){labs[0]=label; freq[0]=1.;} | |
335 | } else { | |
336 | Int_t idx[kMAXCLUSTERSPERTRACK]; | |
337 | TMath::Sort(nlabels, s[1], idx); | |
338 | label = s[0][idx[0]]; prob = s[1][idx[0]]/Float_t(ncl); | |
339 | if(labs && freq){ | |
340 | for (Int_t i(0); i<nlabels; i++){ | |
341 | labs[i] = s[0][idx[i]]; | |
342 | freq[i] = s[1][idx[i]]/Float_t(ncl); | |
343 | } | |
344 | } | |
bb56afff | 345 | } |
e73baf29 | 346 | SetLabel((1.-prob > wrong)?-label:label); |
347 | return nlabels; | |
bb56afff | 348 | } |
349 | ||
d9950a5a | 350 | //_______________________________________________________________ |
351 | Bool_t AliTRDtrackV1::CookPID() | |
352 | { | |
2a3191bb | 353 | // |
354 | // Cook the PID information for the track by delegating the omonim function of the tracklets. | |
355 | // Computes the number of tracklets used. The tracklet information are considered independent. | |
356 | // For the moment no global track measurement of PID is performed as for example to estimate | |
357 | // bremsstrahlung probability based on global chi2 of the track. | |
358 | // | |
359 | // The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the | |
360 | //TRD for tracks with 6 tacklets is displayed below. | |
361 | //Begin_Html | |
362 | //<img src="TRD/trackPID.gif"> | |
363 | //End_Html | |
364 | // | |
9dcc64cc | 365 | const AliTRDPIDResponse *pidResponse = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod()); |
366 | if(!pidResponse){ | |
367 | AliError("PID Response not available"); | |
eb2b4f91 | 368 | return kFALSE; |
3b57a3f7 | 369 | } |
9dcc64cc | 370 | Int_t nslices = pidResponse->GetNumberOfSlices(); |
371 | Double_t dEdx[kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN]; | |
372 | Float_t trackletP[kNplane]; | |
373 | memset(dEdx, 0, sizeof(Double_t) * kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN); | |
374 | memset(trackletP, 0, sizeof(Float_t)*kNplane); | |
375 | for(Int_t iseed = 0; iseed < kNplane; iseed++){ | |
376 | if(!fTracklet[iseed]) continue; | |
377 | trackletP[iseed] = fTracklet[iseed]->GetMomentum(); | |
3335de10 | 378 | fTracklet[iseed]->SetPID(); |
9dcc64cc | 379 | if(pidResponse->GetPIDmethod() == AliTRDPIDResponse::kLQ1D){ |
380 | dEdx[iseed] = fTracklet[iseed]->GetdQdl(); | |
381 | } else { | |
93fc2389 | 382 | fTracklet[iseed]->CookdEdx(nslices); |
9dcc64cc | 383 | const Float_t *trackletdEdx = fTracklet[iseed]->GetdEdx(); |
384 | for(Int_t islice = 0; islice < nslices; islice++){ | |
385 | dEdx[iseed*nslices + islice] = trackletdEdx[islice]; | |
386 | } | |
9dcc64cc | 387 | } |
388 | } | |
389 | pidResponse->GetResponse(nslices, dEdx, trackletP, fPID); | |
e2a1c98b | 390 | |
391 | //do truncated mean | |
392 | //ncls needs to be included!! todo!! | |
393 | AliTRDdEdxUtils::SetObjPHQ(AliTRDcalibDB::Instance()->GetPHQ()); | |
394 | const Double_t mag = AliTRDdEdxUtils::IsExBOn() ? GetBz() : -1; | |
395 | const Double_t charge = AliTRDdEdxUtils::IsExBOn() ? Charge() : -1; | |
396 | fTruncatedMean = CookTruncatedMean(0, mag, charge, kTRUE); | |
397 | ||
eb2b4f91 | 398 | return kTRUE; |
399 | } | |
400 | ||
401 | //___________________________________________________________ | |
402 | UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const | |
403 | { | |
404 | // Retrieve number of tracklets used for PID calculation. | |
405 | ||
e20bef2b | 406 | UChar_t nPID = 0; |
3b57a3f7 | 407 | for(int ip=0; ip<kNplane; ip++){ |
68f9b6bd | 408 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 409 | if(!fTracklet[ip]->IsOK()) continue; |
3b57a3f7 | 410 | |
e20bef2b | 411 | nPID++; |
0906e73e | 412 | } |
e20bef2b | 413 | return nPID; |
eb2b4f91 | 414 | } |
415 | ||
0349cc67 | 416 | //_______________________________________________________________ |
417 | AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id) | |
418 | { | |
4d6aee34 | 419 | // Get the cluster at a certain position in the track |
0349cc67 | 420 | Int_t n = 0; |
421 | for(Int_t ip=0; ip<kNplane; ip++){ | |
422 | if(!fTracklet[ip]) continue; | |
423 | if(n+fTracklet[ip]->GetN() <= id){ | |
424 | n+=fTracklet[ip]->GetN(); | |
425 | continue; | |
426 | } | |
4d6aee34 | 427 | AliTRDcluster *c = NULL; |
8d2bec9e | 428 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
0349cc67 | 429 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
430 | ||
431 | if(n<id){n++; continue;} | |
432 | return c; | |
433 | } | |
434 | } | |
4d6aee34 | 435 | return NULL; |
0349cc67 | 436 | } |
437 | ||
3b57a3f7 | 438 | //_______________________________________________________________ |
439 | Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const | |
440 | { | |
4d6aee34 | 441 | // Get the cluster index at a certain position in the track |
3b57a3f7 | 442 | Int_t n = 0; |
443 | for(Int_t ip=0; ip<kNplane; ip++){ | |
444 | if(!fTracklet[ip]) continue; | |
76b60503 | 445 | if(n+fTracklet[ip]->GetN() <= id){ |
3b57a3f7 | 446 | n+=fTracklet[ip]->GetN(); |
447 | continue; | |
448 | } | |
8d2bec9e | 449 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
87f70a90 | 450 | if(!(fTracklet[ip]->GetClusters(ic))) continue; |
76b60503 | 451 | if(n<id){n++; continue;} |
3b57a3f7 | 452 | return fTracklet[ip]->GetIndexes(ic); |
453 | } | |
454 | } | |
455 | return -1; | |
0906e73e | 456 | } |
d9950a5a | 457 | |
458 | //_______________________________________________________________ | |
b72f4eaf | 459 | Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const |
d9950a5a | 460 | { |
ed15ef4f | 461 | // Compute chi2 between tracklet and track. The value is calculated at the radial position of the track |
462 | // equal to the reference radial position of the tracklet (see AliTRDseedV1) | |
463 | // | |
464 | // The chi2 estimator is computed according to the following formula | |
465 | // BEGIN_LATEX | |
466 | // #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T} | |
467 | // END_LATEX | |
468 | // where X=(y z), the position of the track/tracklet in the yz plane | |
469 | // | |
470 | ||
b72f4eaf | 471 | Double_t p[2] = { trklt->GetY(), trklt->GetZ()}; |
472 | trklt->GetCovAt(trklt->GetX(), cov); | |
ed15ef4f | 473 | return AliExternalTrackParam::GetPredictedChi2(p, cov); |
3b57a3f7 | 474 | } |
d9950a5a | 475 | |
eb2b4f91 | 476 | //_______________________________________________________________ |
477 | Int_t AliTRDtrackV1::GetSector() const | |
478 | { | |
479 | return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector)); | |
480 | } | |
481 | ||
203967fc | 482 | //_______________________________________________________________ |
483 | Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const | |
484 | { | |
4d6aee34 | 485 | // Checks whether two tracks are equal |
203967fc | 486 | if (!o) return kFALSE; |
487 | const AliTRDtrackV1 *inTrack = dynamic_cast<const AliTRDtrackV1*>(o); | |
488 | if (!inTrack) return kFALSE; | |
489 | ||
eb2b4f91 | 490 | //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE; |
203967fc | 491 | |
d8069611 | 492 | if(memcmp(fPID, inTrack->fPID, AliPID::kSPECIES*sizeof(Double32_t))) return kFALSE; |
493 | if(memcmp(fBudget, inTrack->fBudget, 3*sizeof(Double32_t))) return kFALSE; | |
494 | if(memcmp(&fDE, &inTrack->fDE, sizeof(Double32_t))) return kFALSE; | |
495 | if(memcmp(&fFakeRatio, &inTrack->fFakeRatio, sizeof(Double32_t))) return kFALSE; | |
496 | if(memcmp(&fChi2, &inTrack->fChi2, sizeof(Double32_t))) return kFALSE; | |
497 | if(memcmp(&fMass, &inTrack->fMass, sizeof(Double32_t))) return kFALSE; | |
498 | if( fLab != inTrack->fLab ) return kFALSE; | |
499 | if( fN != inTrack->fN ) return kFALSE; | |
500 | Double32_t l(0.), in(0.); | |
501 | l = GetIntegratedLength(); in = inTrack->GetIntegratedLength(); | |
502 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
503 | l=GetX(); in=inTrack->GetX(); | |
504 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
505 | l = GetAlpha(); in = inTrack->GetAlpha(); | |
506 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
507 | if(memcmp(GetParameter(), inTrack->GetParameter(), 5*sizeof(Double32_t))) return kFALSE; | |
508 | if(memcmp(GetCovariance(), inTrack->GetCovariance(), 15*sizeof(Double32_t))) return kFALSE; | |
203967fc | 509 | |
510 | for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){ | |
511 | AliTRDseedV1 *curTracklet = fTracklet[iTracklet]; | |
512 | AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet); | |
513 | if (curTracklet && inTracklet){ | |
514 | if (! curTracklet->IsEqual(inTracklet) ) { | |
515 | curTracklet->Print(); | |
516 | inTracklet->Print(); | |
517 | return kFALSE; | |
518 | } | |
519 | } else { | |
520 | // if one tracklet exists, and corresponding | |
521 | // in other track doesn't - return kFALSE | |
522 | if(inTracklet || curTracklet) return kFALSE; | |
523 | } | |
524 | } | |
525 | ||
526 | return kTRUE; | |
527 | } | |
528 | ||
22a4ab0c | 529 | //_______________________________________________________________ |
530 | Bool_t AliTRDtrackV1::IsElectron() const | |
531 | { | |
4d6aee34 | 532 | if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE; |
22a4ab0c | 533 | return kFALSE; |
534 | } | |
535 | ||
3b57a3f7 | 536 | |
537 | //_____________________________________________________________________________ | |
b453ef55 | 538 | Int_t AliTRDtrackV1::MakeBackupTrack() |
3b57a3f7 | 539 | { |
b453ef55 | 540 | // |
541 | // Creates a backup track | |
542 | // TO DO update quality check of the track. | |
543 | // | |
544 | ||
545 | Float_t occupancy(0.); Int_t n(0), ncls(0); | |
546 | for(Int_t il(AliTRDgeometry::kNlayer); il--;){ | |
547 | if(!fTracklet[il]) continue; | |
548 | n++; | |
5c5d503a | 549 | occupancy+=fTracklet[il]->GetTBoccupancy()/AliTRDseedV1::kNtb; |
b453ef55 | 550 | ncls += fTracklet[il]->GetN(); |
551 | } | |
552 | if(!n) return -1; | |
553 | occupancy/=n; | |
554 | ||
555 | //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); | |
556 | ||
557 | Int_t failedCutId(0); | |
558 | if(GetChi2()/n > 5.0) failedCutId=1; | |
559 | if(occupancy < 0.7) failedCutId=2; | |
560 | //if(ratio1 > 0.6) && | |
561 | //if(ratio0+ratio1 > 1.5) && | |
562 | if(GetNCross() != 0) failedCutId=3; | |
563 | if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4; | |
564 | if(ncls < 20) failedCutId=5; | |
565 | ||
566 | if(failedCutId){ | |
567 | AliDebug(2, Form("\n" | |
568 | "chi2/tracklet < 5.0 [%c] %5.2f\n" | |
569 | "occupancy > 0.7 [%c] %4.2f\n" | |
570 | "NCross == 0 [%c] %d\n" | |
571 | "Abs(snp) < 0.85 [%c] %4.2f\n" | |
572 | "NClusters > 20 [%c] %d" | |
573 | ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n | |
574 | ,(occupancy>0.7)?'y':'n', occupancy | |
575 | ,(GetNCross()==0)?'y':'n', GetNCross() | |
576 | ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp()) | |
577 | ,(ncls>20)?'y':'n', ncls | |
578 | )); | |
579 | return failedCutId; | |
580 | } | |
3b57a3f7 | 581 | |
582 | if(fBackupTrack) { | |
583 | fBackupTrack->~AliTRDtrackV1(); | |
584 | new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 585 | return 0; |
3b57a3f7 | 586 | } |
587 | fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 588 | return 0; |
d9950a5a | 589 | } |
590 | ||
3b57a3f7 | 591 | //_____________________________________________________________________________ |
f8a9723f | 592 | Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) const |
3b57a3f7 | 593 | { |
594 | // | |
595 | // Find a prolongation at given x | |
530fb4e2 | 596 | // Return -1 if it does not exist |
3b57a3f7 | 597 | // |
598 | ||
599 | Double_t bz = GetBz(); | |
530fb4e2 | 600 | if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1; |
601 | if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1; | |
3b57a3f7 | 602 | |
603 | return 1; | |
604 | ||
605 | } | |
606 | ||
607 | //_____________________________________________________________________________ | |
15a2657d | 608 | Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho) |
0906e73e | 609 | { |
610 | // | |
3b57a3f7 | 611 | // Propagates this track to a reference plane defined by "xk" [cm] |
612 | // correcting for the mean crossed material. | |
0906e73e | 613 | // |
3b57a3f7 | 614 | // "xx0" - thickness/rad.length [units of the radiation length] |
615 | // "xrho" - thickness*density [g/cm^2] | |
616 | // | |
0906e73e | 617 | |
952051c5 | 618 | if (TMath::Abs(xk - GetX())<AliTRDReconstructor::GetEpsilon()*0.1) return kTRUE; // 10% of the tracker precision |
dc5e390a | 619 | |
307aac71 | 620 | Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation |
dc5e390a | 621 | b[3]; // magnetic field |
307aac71 | 622 | GetBxByBz(b); |
dc5e390a | 623 | if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE; |
624 | ||
307aac71 | 625 | // local track position AFTER propagation |
626 | Double_t xyz1[3] = {GetX(), GetY(), GetZ()}; | |
2f4384e6 | 627 | // printf("x0[%6.2f] -> x1[%6.2f] dx[%6.2f] rho[%f]\n", xyz0[0], xyz1[0], xyz0[0]-xk, xrho/TMath::Abs(xyz0[0]-xk)); |
dc5e390a | 628 | if(xyz0[0] < xk) { |
5c5d503a | 629 | xrho = -xrho; |
3b57a3f7 | 630 | if (IsStartedTimeIntegral()) { |
dc5e390a | 631 | Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
632 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]) | |
633 | + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); | |
6790f7d7 | 634 | Double_t crv = AliExternalTrackParam::GetC(b[2]); |
3b57a3f7 | 635 | if (TMath::Abs(l2*crv) > 0.0001) { |
636 | // Make correction for curvature if neccesary | |
dc5e390a | 637 | l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
638 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])); | |
3b57a3f7 | 639 | l2 = 2.0 * TMath::ASin(l2 * crv) / crv; |
dc5e390a | 640 | l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); |
3b57a3f7 | 641 | } |
642 | AddTimeStep(l2); | |
643 | } | |
644 | } | |
35315297 | 645 | if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, fMass)) return kFALSE; |
fd40f855 | 646 | |
3b57a3f7 | 647 | |
648 | { | |
649 | ||
650 | // Energy losses | |
651 | Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (GetSigned1Pt()*GetSigned1Pt()); | |
35315297 | 652 | Double_t beta2 = p2 / (p2 + fMass*fMass); |
3b57a3f7 | 653 | if ((beta2 < 1.0e-10) || |
654 | ((5940.0 * beta2/(1.0 - beta2 + 1.0e-10) - beta2) < 0.0)) { | |
655 | return kFALSE; | |
656 | } | |
657 | ||
658 | Double_t dE = 0.153e-3 / beta2 | |
659 | * (TMath::Log(5940.0 * beta2/(1.0 - beta2 + 1.0e-10)) - beta2) | |
660 | * xrho; | |
661 | fBudget[0] += xrho; | |
662 | ||
663 | /* | |
664 | // Suspicious part - think about it ? | |
665 | Double_t kinE = TMath::Sqrt(p2); | |
666 | if (dE > 0.8*kinE) dE = 0.8 * kinE; // | |
667 | if (dE < 0) dE = 0.0; // Not valid region for Bethe bloch | |
668 | */ | |
669 | ||
670 | fDE += dE; | |
671 | ||
672 | /* | |
673 | // Suspicious ! I.B. | |
674 | Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE)); // Energy loss fluctuation | |
35315297 | 675 | Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+fMass*fMass)/(p2*p2); |
3b57a3f7 | 676 | fCcc += sigmac2; |
677 | fCee += fX*fX * sigmac2; | |
678 | */ | |
679 | ||
680 | } | |
681 | ||
682 | return kTRUE; | |
0906e73e | 683 | } |
3b57a3f7 | 684 | |
87a7fa94 | 685 | //_____________________________________________________________________________ |
3b57a3f7 | 686 | Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) |
87a7fa94 | 687 | { |
688 | // | |
3b57a3f7 | 689 | // Propagate track to the radial position |
690 | // Rotation always connected to the last track position | |
87a7fa94 | 691 | // |
692 | ||
3b57a3f7 | 693 | Double_t xyz0[3]; |
694 | Double_t xyz1[3]; | |
695 | Double_t y; | |
696 | Double_t z; | |
697 | ||
698 | Double_t radius = TMath::Sqrt(GetX()*GetX() + GetY()*GetY()); | |
699 | // Direction +- | |
700 | Double_t dir = (radius > r) ? -1.0 : 1.0; | |
701 | ||
702 | for (Double_t x = radius+dir*step; dir*x < dir*r; x += dir*step) { | |
703 | ||
704 | GetXYZ(xyz0); | |
705 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
706 | Rotate(alpha,kTRUE); | |
707 | GetXYZ(xyz0); | |
e20bef2b | 708 | if(GetProlongation(x,y,z)<0) return -1; |
3b57a3f7 | 709 | xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
710 | xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
711 | xyz1[2] = z; | |
712 | Double_t param[7]; | |
83dea92e | 713 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1; |
3b57a3f7 | 714 | if (param[1] <= 0) { |
715 | param[1] = 100000000; | |
716 | } | |
717 | PropagateTo(x,param[1],param[0]*param[4]); | |
718 | ||
719 | } | |
720 | ||
721 | GetXYZ(xyz0); | |
722 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
723 | Rotate(alpha,kTRUE); | |
724 | GetXYZ(xyz0); | |
530fb4e2 | 725 | if(GetProlongation(r,y,z)<0) return -1; |
3b57a3f7 | 726 | xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
727 | xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
728 | xyz1[2] = z; | |
729 | Double_t param[7]; | |
83dea92e | 730 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1; |
3b57a3f7 | 731 | |
732 | if (param[1] <= 0) { | |
733 | param[1] = 100000000; | |
87a7fa94 | 734 | } |
3b57a3f7 | 735 | PropagateTo(r,param[1],param[0]*param[4]); |
736 | ||
737 | return 0; | |
738 | ||
87a7fa94 | 739 | } |
740 | ||
203967fc | 741 | //_____________________________________________________________________________ |
742 | void AliTRDtrackV1::Print(Option_t *o) const | |
743 | { | |
4d6aee34 | 744 | // Print track status |
eb2b4f91 | 745 | AliInfo(Form("PID [%4.1f %4.1f %4.1f %4.1f %4.1f]", 1.E2*fPID[0], 1.E2*fPID[1], 1.E2*fPID[2], 1.E2*fPID[3], 1.E2*fPID[4])); |
203967fc | 746 | AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2])); |
747 | ||
748 | AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass)); | |
eb2b4f91 | 749 | AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab)); |
203967fc | 750 | |
203967fc | 751 | printf("|X| = ("); |
752 | const Double_t *curP = GetParameter(); | |
753 | for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]); | |
754 | printf(")\n"); | |
755 | ||
756 | printf("|V| = \n"); | |
757 | const Double_t *curC = GetCovariance(); | |
758 | for (Int_t i = 0, j=4, k=0; i<15; i++, k++){ | |
759 | printf("%7.2f ", curC[i]); | |
760 | if(k==j){ | |
761 | printf("\n"); | |
762 | k=-1; j--; | |
763 | } | |
764 | } | |
0217fcd0 | 765 | if(strcmp(o, "a")!=0) return; |
203967fc | 766 | |
767 | for(Int_t ip=0; ip<kNplane; ip++){ | |
768 | if(!fTracklet[ip]) continue; | |
769 | fTracklet[ip]->Print(o); | |
770 | } | |
771 | } | |
772 | ||
773 | ||
3b57a3f7 | 774 | //_____________________________________________________________________________ |
775 | Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute) | |
776 | { | |
777 | // | |
778 | // Rotates track parameters in R*phi plane | |
779 | // if absolute rotation alpha is in global system | |
780 | // otherwise alpha rotation is relative to the current rotation angle | |
781 | // | |
782 | ||
783 | if (absolute) alpha -= GetAlpha(); | |
784 | //else fNRotate++; | |
785 | ||
786 | return AliExternalTrackParam::Rotate(GetAlpha()+alpha); | |
787 | } | |
87a7fa94 | 788 | |
eb38ed55 | 789 | //___________________________________________________________ |
790 | void AliTRDtrackV1::SetNumberOfClusters() | |
791 | { | |
792 | // Calculate the number of clusters attached to this track | |
793 | ||
3b57a3f7 | 794 | Int_t ncls = 0; |
795 | for(int ip=0; ip<kNplane; ip++){ | |
68f9b6bd | 796 | if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN(); |
3b57a3f7 | 797 | } |
798 | AliKalmanTrack::SetNumberOfClusters(ncls); | |
eb38ed55 | 799 | } |
800 | ||
801 | ||
0906e73e | 802 | //_______________________________________________________________ |
3b57a3f7 | 803 | void AliTRDtrackV1::SetOwner() |
0906e73e | 804 | { |
805 | // | |
806 | // Toggle ownership of tracklets | |
807 | // | |
808 | ||
e44586fb | 809 | if(TestBit(kOwner)) return; |
3b57a3f7 | 810 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 811 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 812 | fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]); |
813 | fTracklet[ip]->SetOwner(); | |
814 | } | |
e44586fb | 815 | SetBit(kOwner); |
0906e73e | 816 | } |
817 | ||
d9950a5a | 818 | //_______________________________________________________________ |
4d6aee34 | 819 | void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index) |
d9950a5a | 820 | { |
821 | // | |
0906e73e | 822 | // Set the tracklets |
d9950a5a | 823 | // |
3b57a3f7 | 824 | Int_t plane = trklt->GetPlane(); |
76b60503 | 825 | |
3b57a3f7 | 826 | fTracklet[plane] = trklt; |
827 | fTrackletIndex[plane] = index; | |
d9950a5a | 828 | } |
829 | ||
e3cf3d02 | 830 | //_______________________________________________________________ |
a310e49b | 831 | void AliTRDtrackV1::SetTrackIn() |
e3cf3d02 | 832 | { |
fc6d4c2d | 833 | // Save location of birth for the TRD track |
834 | // If the pointer is not valid allocate memory | |
835 | // | |
e3cf3d02 | 836 | const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 837 | |
5d4510fe | 838 | //printf("SetTrackIn() : fTrackLow[%p]\n", (void*)fTrackLow); |
fc6d4c2d | 839 | if(fTrackLow){ |
840 | fTrackLow->~AliExternalTrackParam(); | |
841 | new(fTrackLow) AliExternalTrackParam(*op); | |
842 | } else fTrackLow = new AliExternalTrackParam(*op); | |
e3cf3d02 | 843 | } |
844 | ||
845 | //_______________________________________________________________ | |
a310e49b | 846 | void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op) |
e3cf3d02 | 847 | { |
fc6d4c2d | 848 | // Save location of death for the TRD track |
849 | // If the pointer is not valid allocate memory | |
850 | // | |
e3cf3d02 | 851 | if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 852 | if(fTrackHigh){ |
853 | fTrackHigh->~AliExternalTrackParam(); | |
854 | new(fTrackHigh) AliExternalTrackParam(*op); | |
855 | } else fTrackHigh = new AliExternalTrackParam(*op); | |
e3cf3d02 | 856 | } |
857 | ||
181d2c97 | 858 | //_______________________________________________________________ |
859 | void AliTRDtrackV1::UnsetTracklet(Int_t plane) | |
860 | { | |
87f70a90 | 861 | if(plane<0) return; |
17896e82 | 862 | fTrackletIndex[plane] = -1; |
4d6aee34 | 863 | fTracklet[plane] = NULL; |
181d2c97 | 864 | } |
865 | ||
866 | ||
d9950a5a | 867 | //_______________________________________________________________ |
ef867f55 | 868 | void AliTRDtrackV1::UpdateChi2(Float_t chi2) |
d9950a5a | 869 | { |
ef867f55 | 870 | // Update chi2/track with one tracklet contribution |
b72f4eaf | 871 | SetChi2(GetChi2() + chi2); |
d9950a5a | 872 | } |
873 | ||
874 | //_______________________________________________________________ | |
0906e73e | 875 | void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track) |
d9950a5a | 876 | { |
877 | // | |
6984f7c1 | 878 | // Update the TRD PID information in the ESD track |
d9950a5a | 879 | // |
6984f7c1 | 880 | |
93fc2389 | 881 | // Int_t nslices = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod())->GetNumberOfSlices(); |
e20bef2b | 882 | // number of tracklets used for PID calculation |
883 | UChar_t nPID = GetNumberOfTrackletsPID(); | |
884 | // number of tracklets attached to the track | |
885 | UChar_t nTrk = GetNumberOfTracklets(); | |
886 | // pack the two numbers together and store them in the ESD | |
887 | track->SetTRDntracklets(nPID | (nTrk<<3)); | |
888 | // allocate space to store raw PID signals dEdx & momentum | |
93fc2389 | 889 | track->SetNumberOfTRDslices((AliTRDPIDResponse::kNslicesNN+3)*AliTRDgeometry::kNlayer); |
e20bef2b | 890 | // store raw signals |
7b23a4e1 | 891 | Float_t p, sp; Double_t spd; |
6984f7c1 | 892 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 893 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
e20bef2b | 894 | if(!fTracklet[ip]->HasPID()) continue; |
93fc2389 | 895 | fTracklet[ip]->CookdEdx(AliTRDPIDResponse::kNslicesNN); |
4d6aee34 | 896 | const Float_t *dedx = fTracklet[ip]->GetdEdx(); |
93fc2389 | 897 | for (Int_t js = 0; js < AliTRDPIDResponse::kNslicesNN; js++, dedx++){ |
93fc2389 | 898 | track->SetTRDslice(*dedx, ip, js+1); |
899 | } | |
5554f68d | 900 | p = fTracklet[ip]->GetMomentum(&sp); |
c05ef2e8 | 901 | spd = sp; track->SetTRDmomentum(p, ip, &spd); |
5c5d503a | 902 | // store global quality per tracklet instead of momentum error |
903 | // 26.09.11 A.Bercuci | |
904 | // first implementation store no. of time bins filled in tracklet (5bits see "y" bits) and | |
905 | // no. of double clusters in case of pad row cross (4bits see "x" bits) | |
906 | // bit map for tracklet quality xxxxyyyyy | |
803dc399 | 907 | // 27.10.11 A.Bercuci |
c05ef2e8 | 908 | // add chamber status bit "z" bit |
803dc399 | 909 | // bit map for tracklet quality zxxxxyyyyy |
c05ef2e8 | 910 | // 12.11.11 A.Bercuci |
911 | // fit tracklet quality into the field fTRDTimeBin [Char_t] | |
912 | // bit map for tracklet quality zxxyyyyy | |
5554f68d | 913 | // The information should be retrieved by the following functions of AliESDtrack for each TRD layer |
914 | // GetTRDtrkltOccupancy(layer) -> no of TB filled in tracklet | |
915 | // GetTRDtrkltClCross(layer) -> no of TB filled in crossing pad rows | |
916 | // IsTRDtrkltChmbGood(layer) -> status of the chamber from which the tracklet is found | |
917 | Int_t nCross(fTracklet[ip]->IsRowCross()?fTracklet[ip]->GetTBcross():0); if(nCross>3) nCross = 3; | |
c05ef2e8 | 918 | Char_t trackletQ = Char_t(fTracklet[ip]->GetTBoccupancy() | (nCross<<5) | (fTracklet[ip]->IsChmbGood()<<7)); |
919 | track->SetTRDTimBin(trackletQ, ip); | |
9dcc64cc | 920 | track->SetTRDslice(fTracklet[ip]->GetdQdl(), ip, 0); // Set Summed dEdx into the first slice |
6984f7c1 | 921 | } |
e20bef2b | 922 | // store PID probabilities |
923 | track->SetTRDpid(fPID); | |
e2a1c98b | 924 | |
925 | //store truncated mean | |
926 | track->SetTRDsignal(fTruncatedMean); | |
d9950a5a | 927 | } |
e2a1c98b | 928 | |
929 | //_______________________________________________________________ | |
930 | Double_t AliTRDtrackV1::CookTruncatedMean(const Bool_t kinvq, const Double_t mag, const Int_t charge, const Int_t kcalib, TVectorD *Qs, TVectorD *Xs, Int_t timeBin0, Int_t timeBin1, Int_t tstep) const | |
931 | { | |
932 | // | |
933 | //Origin: Xianguo Lu <xianguo.lu@cern.ch>, Marian Ivanov <marian.ivanov@cern.ch> | |
934 | // | |
935 | ||
936 | TVectorD arrayQ(200), arrayX(200); | |
937 | Int_t ncls = AliTRDdEdxUtils::GetArrayClusterQ(kinvq, &arrayQ, &arrayX, this, timeBin0, timeBin1, tstep); | |
938 | ||
939 | const TObjArray *cobj = kcalib ? AliTRDdEdxUtils::GetObjPHQ(kinvq, mag, charge) : NULL; | |
940 | ||
941 | const Double_t tmean = AliTRDdEdxUtils::ToyCook(kinvq, ncls, &arrayQ, &arrayX, cobj); | |
942 | ||
943 | const Int_t nch = AliTRDdEdxUtils::UpdateArrayX(ncls, &arrayX); | |
944 | ||
945 | if(Qs && Xs){ | |
946 | (*Qs)=arrayQ; | |
947 | (*Xs)=arrayX; | |
948 | } | |
949 | ||
950 | return AliTRDdEdxUtils::GetSignal(nch, ncls, tmean); | |
951 | } | |
952 |