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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 | ||
203967fc | 19 | #include "AliLog.h" |
eb38ed55 | 20 | #include "AliESDtrack.h" |
41880fac | 21 | #include "AliTracker.h" |
eb38ed55 | 22 | |
d9950a5a | 23 | #include "AliTRDtrackV1.h" |
24 | #include "AliTRDcluster.h" | |
25 | #include "AliTRDcalibDB.h" | |
3afdab72 | 26 | #include "AliTRDReconstructor.h" |
9dcc64cc | 27 | #include "AliTRDPIDResponse.h" |
d9950a5a | 28 | #include "AliTRDrecoParam.h" |
29 | ||
d9950a5a | 30 | ClassImp(AliTRDtrackV1) |
31 | ||
0906e73e | 32 | /////////////////////////////////////////////////////////////////////////////// |
33 | // // | |
34 | // Represents a reconstructed TRD track // | |
35 | // Local TRD Kalman track // | |
36 | // // | |
37 | // Authors: // | |
38 | // Alex Bercuci <A.Bercuci@gsi.de> // | |
39 | // Markus Fasel <M.Fasel@gsi.de> // | |
40 | // // | |
41 | /////////////////////////////////////////////////////////////////////////////// | |
d9950a5a | 42 | |
43 | //_______________________________________________________________ | |
3b57a3f7 | 44 | AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack() |
eb2b4f91 | 45 | ,fStatus(0) |
352cef8f | 46 | ,fESDid(0) |
3b57a3f7 | 47 | ,fDE(0.) |
4d6aee34 | 48 | ,fkReconstructor(NULL) |
49 | ,fBackupTrack(NULL) | |
50 | ,fTrackLow(NULL) | |
51 | ,fTrackHigh(NULL) | |
0906e73e | 52 | { |
d9950a5a | 53 | // |
54 | // Default constructor | |
55 | // | |
6e49cfdb | 56 | //printf("AliTRDtrackV1::AliTRDtrackV1()\n"); |
e44586fb | 57 | |
3b57a3f7 | 58 | for(int i =0; i<3; i++) fBudget[i] = 0.; |
59 | ||
60 | Float_t pid = 1./AliPID::kSPECIES; | |
61 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
62 | ||
63 | for(int ip=0; ip<kNplane; ip++){ | |
17896e82 | 64 | fTrackletIndex[ip] = -1; |
4d6aee34 | 65 | fTracklet[ip] = NULL; |
3b57a3f7 | 66 | } |
d9950a5a | 67 | } |
68 | ||
69 | //_______________________________________________________________ | |
3b57a3f7 | 70 | AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref) |
eb2b4f91 | 71 | ,fStatus(ref.fStatus) |
352cef8f | 72 | ,fESDid(ref.fESDid) |
3b57a3f7 | 73 | ,fDE(ref.fDE) |
4d6aee34 | 74 | ,fkReconstructor(ref.fkReconstructor) |
75 | ,fBackupTrack(NULL) | |
76 | ,fTrackLow(NULL) | |
77 | ,fTrackHigh(NULL) | |
d9950a5a | 78 | { |
79 | // | |
3b57a3f7 | 80 | // Copy constructor |
d9950a5a | 81 | // |
82 | ||
6e49cfdb | 83 | //printf("AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &)\n"); |
29b87567 | 84 | SetBit(kOwner, kFALSE); |
3b57a3f7 | 85 | for(int ip=0; ip<kNplane; ip++){ |
86 | fTrackletIndex[ip] = ref.fTrackletIndex[ip]; | |
87 | fTracklet[ip] = ref.fTracklet[ip]; | |
88 | } | |
e3cf3d02 | 89 | if(ref.fTrackLow) fTrackLow = new AliExternalTrackParam(*ref.fTrackLow); |
90 | if(ref.fTrackHigh) fTrackHigh = new AliExternalTrackParam(*ref.fTrackHigh); | |
91 | ||
3b57a3f7 | 92 | for (Int_t i = 0; i < 3;i++) fBudget[i] = ref.fBudget[i]; |
93 | ||
94 | for(Int_t is = 0; is<AliPID::kSPECIES; is++) fPID[is] = ref.fPID[is]; | |
95 | ||
96 | AliKalmanTrack::SetNumberOfClusters(ref.GetNumberOfClusters()); | |
d9950a5a | 97 | } |
98 | ||
99 | //_______________________________________________________________ | |
3b57a3f7 | 100 | AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack() |
eb2b4f91 | 101 | ,fStatus(0) |
352cef8f | 102 | ,fESDid(0) |
3b57a3f7 | 103 | ,fDE(0.) |
4d6aee34 | 104 | ,fkReconstructor(NULL) |
105 | ,fBackupTrack(NULL) | |
106 | ,fTrackLow(NULL) | |
107 | ,fTrackHigh(NULL) | |
d9950a5a | 108 | { |
109 | // | |
3b57a3f7 | 110 | // Constructor from AliESDtrack |
d9950a5a | 111 | // |
112 | ||
352cef8f | 113 | SetESDid(t.GetID()); |
3b57a3f7 | 114 | SetLabel(t.GetLabel()); |
115 | SetChi2(0.0); | |
0b433f72 | 116 | |
117 | SetMass(t.GetMass()/*0.000510*/); | |
3b57a3f7 | 118 | AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls()); |
17896e82 | 119 | Int_t ti[]={-1, -1, -1, -1, -1, -1}; t.GetTRDtracklets(&ti[0]); |
3b57a3f7 | 120 | for(int ip=0; ip<kNplane; ip++){ |
17896e82 | 121 | fTrackletIndex[ip] = ti[ip]; |
4d6aee34 | 122 | fTracklet[ip] = NULL; |
3b57a3f7 | 123 | } |
124 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
125 | ||
126 | Float_t pid = 1./AliPID::kSPECIES; | |
127 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
128 | ||
129 | const AliExternalTrackParam *par = &t; | |
130 | if (t.GetStatus() & AliESDtrack::kTRDbackup) { | |
131 | par = t.GetOuterParam(); | |
132 | if (!par) { | |
133 | AliError("No backup info!"); | |
134 | par = &t; | |
135 | } | |
136 | } | |
137 | Set(par->GetX() | |
138 | ,par->GetAlpha() | |
139 | ,par->GetParameter() | |
140 | ,par->GetCovariance()); | |
141 | ||
142 | if(t.GetStatus() & AliESDtrack::kTIME) { | |
143 | StartTimeIntegral(); | |
144 | Double_t times[10]; | |
145 | t.GetIntegratedTimes(times); | |
146 | SetIntegratedTimes(times); | |
147 | SetIntegratedLength(t.GetIntegratedLength()); | |
148 | } | |
d9950a5a | 149 | } |
150 | ||
d9950a5a | 151 | //_______________________________________________________________ |
e17f4785 | 152 | AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15] |
3b57a3f7 | 153 | , Double_t x, Double_t alpha) : AliKalmanTrack() |
eb2b4f91 | 154 | ,fStatus(0) |
352cef8f | 155 | ,fESDid(0) |
3b57a3f7 | 156 | ,fDE(0.) |
4d6aee34 | 157 | ,fkReconstructor(NULL) |
158 | ,fBackupTrack(NULL) | |
159 | ,fTrackLow(NULL) | |
160 | ,fTrackHigh(NULL) | |
d9950a5a | 161 | { |
0906e73e | 162 | // |
163 | // The stand alone tracking constructor | |
164 | // TEMPORARY !!!!!!!!!!! | |
165 | // to check : | |
166 | // 1. covariance matrix | |
167 | // 2. dQdl calculation | |
168 | // | |
d9950a5a | 169 | |
68f9b6bd | 170 | Double_t b(GetBz()); |
171 | Double_t cnv = (TMath::Abs(b) < 1.e-5) ? 1.e5 : 1./GetBz()/kB2C; | |
172 | ||
d9950a5a | 173 | Double_t pp[5] = { p[0] |
68f9b6bd | 174 | , p[1] |
175 | , p[2] | |
176 | , p[3] | |
177 | , p[4]*cnv }; | |
178 | ||
d9950a5a | 179 | Double_t c22 = x*x*cov[14] - 2*x*cov[12] + cov[ 5]; |
180 | Double_t c32 = x*cov[13] - cov[ 8]; | |
181 | Double_t c20 = x*cov[10] - cov[ 3]; | |
182 | Double_t c21 = x*cov[11] - cov[ 4]; | |
183 | Double_t c42 = x*cov[14] - cov[12]; | |
68f9b6bd | 184 | |
d9950a5a | 185 | Double_t cc[15] = { cov[ 0] |
186 | , cov[ 1], cov[ 2] | |
187 | , c20, c21, c22 | |
188 | , cov[ 6], cov[ 7], c32, cov[ 9] | |
189 | , cov[10]*cnv, cov[11]*cnv, c42*cnv, cov[13]*cnv, cov[14]*cnv*cnv }; | |
68f9b6bd | 190 | |
ae3fbe1f | 191 | Double_t mostProbablePt=AliExternalTrackParam::GetMostProbablePt(); |
192 | Double_t p0=TMath::Sign(1/mostProbablePt,pp[4]); | |
193 | Double_t w0=cc[14]/(cc[14] + p0*p0), w1=p0*p0/(cc[14] + p0*p0); | |
68f9b6bd | 194 | AliDebug(3, Form("Pt mixing : w0[%4.2f] pt0[%5.3f] w1[%4.2f] pt[%5.3f]", w0, 1./p0, w1, 1./pp[4])); |
195 | ||
ae3fbe1f | 196 | pp[4] = w0*p0 + w1*pp[4]; |
197 | cc[10]*=w1; cc[11]*=w1; cc[12]*=w1; cc[13]*=w1; cc[14]*=w1; | |
68f9b6bd | 198 | Set(x,alpha,pp,cc); |
0217fcd0 | 199 | AliDebug(2, Form("Init @ x[%6.2f] pt[%5.3f]", x, 1./pp[4])); |
41702fec | 200 | Int_t ncls = 0; |
68f9b6bd | 201 | for(int iplane=0; iplane<kNplane; iplane++){ |
17896e82 | 202 | fTrackletIndex[iplane] = -1; |
68f9b6bd | 203 | if(!trklts[iplane].IsOK()) fTracklet[iplane] = NULL; |
41702fec | 204 | else{ |
e17f4785 | 205 | fTracklet[iplane] = &trklts[iplane]; |
41702fec | 206 | ncls += fTracklet[iplane]->GetN(); |
207 | } | |
68f9b6bd | 208 | } |
41702fec | 209 | AliKalmanTrack::SetNumberOfClusters(ncls); |
210 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
211 | ||
212 | Float_t pid = 1./AliPID::kSPECIES; | |
213 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
d9950a5a | 214 | } |
215 | ||
bb56afff | 216 | //_______________________________________________________________ |
3b57a3f7 | 217 | AliTRDtrackV1::~AliTRDtrackV1() |
bb56afff | 218 | { |
4d8f1bd9 | 219 | // Clean up all objects allocated by the track during its lifetime. |
220 | 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 | 221 | |
4d6aee34 | 222 | if(fBackupTrack) delete fBackupTrack; fBackupTrack = NULL; |
e3cf3d02 | 223 | |
4d6aee34 | 224 | if(fTrackLow) delete fTrackLow; fTrackLow = NULL; |
225 | if(fTrackHigh) delete fTrackHigh; fTrackHigh = NULL; | |
bb56afff | 226 | |
76b60503 | 227 | for(Int_t ip=0; ip<kNplane; ip++){ |
228 | if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip]; | |
4d6aee34 | 229 | fTracklet[ip] = NULL; |
17896e82 | 230 | fTrackletIndex[ip] = -1; |
3b57a3f7 | 231 | } |
232 | } | |
233 | ||
e08a5492 | 234 | //_______________________________________________________________ |
235 | AliTRDtrackV1 &AliTRDtrackV1::operator=(const AliTRDtrackV1 &t) | |
236 | { | |
237 | // | |
238 | // Assignment operator | |
239 | // | |
240 | ||
241 | if (this != &t) { | |
242 | ((AliTRDtrackV1 &) t).Copy(*this); | |
243 | } | |
244 | ||
245 | return *this; | |
246 | ||
247 | } | |
248 | ||
249 | //_____________________________________________________________________________ | |
250 | void AliTRDtrackV1::Copy(TObject &t) const | |
251 | { | |
252 | // | |
253 | // Copy function | |
254 | // | |
255 | ||
256 | ((AliTRDtrackV1 &) t).fStatus = fStatus; | |
257 | ((AliTRDtrackV1 &) t).fESDid = fESDid; | |
258 | ((AliTRDtrackV1 &) t).fDE = fDE; | |
259 | ((AliTRDtrackV1 &) t).fkReconstructor = fkReconstructor; | |
260 | ((AliTRDtrackV1 &) t).fBackupTrack = 0x0; | |
261 | ((AliTRDtrackV1 &) t).fTrackLow = 0x0; | |
262 | ((AliTRDtrackV1 &) t).fTrackHigh = 0x0; | |
263 | ||
264 | for(Int_t ip = 0; ip < kNplane; ip++) { | |
265 | ((AliTRDtrackV1 &) t).fTrackletIndex[ip] = fTrackletIndex[ip]; | |
266 | ((AliTRDtrackV1 &) t).fTracklet[ip] = fTracklet[ip]; | |
267 | } | |
268 | if (fTrackLow) { | |
269 | ((AliTRDtrackV1 &) t).fTrackLow = new AliExternalTrackParam(*fTrackLow); | |
270 | } | |
271 | if (fTrackHigh){ | |
272 | ((AliTRDtrackV1 &) t).fTrackHigh = new AliExternalTrackParam(*fTrackHigh); | |
273 | } | |
274 | ||
275 | for (Int_t i = 0; i < 3; i++) { | |
276 | ((AliTRDtrackV1 &) t).fBudget[i] = fBudget[i]; | |
277 | } | |
278 | for (Int_t is = 0; is < AliPID::kSPECIES; is++) { | |
279 | ((AliTRDtrackV1 &) t).fPID[is] = fPID[is]; | |
280 | } | |
281 | ||
282 | } | |
283 | ||
3b57a3f7 | 284 | //_______________________________________________________________ |
285 | Bool_t AliTRDtrackV1::CookLabel(Float_t wrong) | |
286 | { | |
287 | // set MC label for this track | |
bb2db46c | 288 | if(!GetNumberOfClusters()) return kFALSE; |
289 | ||
bb56afff | 290 | Int_t s[kMAXCLUSTERSPERTRACK][2]; |
291 | for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) { | |
292 | s[i][0] = -1; | |
293 | s[i][1] = 0; | |
294 | } | |
3b57a3f7 | 295 | |
bb56afff | 296 | Bool_t labelAdded; |
3b57a3f7 | 297 | Int_t label; |
4d6aee34 | 298 | AliTRDcluster *c = NULL; |
3b57a3f7 | 299 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 300 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
8d2bec9e | 301 | for (Int_t ic = 0; ic < AliTRDseedV1::kNclusters; ic++) { |
3b57a3f7 | 302 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
303 | for (Int_t k = 0; k < 3; k++) { | |
304 | label = c->GetLabel(k); | |
305 | labelAdded = kFALSE; | |
306 | Int_t j = 0; | |
307 | if (label >= 0) { | |
308 | while ((!labelAdded) && (j < kMAXCLUSTERSPERTRACK)) { | |
309 | if ((s[j][0] == label) || | |
310 | (s[j][1] == 0)) { | |
311 | s[j][0] = label; | |
312 | s[j][1]++; | |
313 | labelAdded = kTRUE; | |
314 | } | |
315 | j++; | |
316 | } | |
317 | } | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
bb56afff | 322 | Int_t max = 0; |
323 | label = -123456789; | |
324 | for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) { | |
325 | if (s[i][1] <= max) continue; | |
3b57a3f7 | 326 | max = s[i][1]; |
327 | label = s[i][0]; | |
bb56afff | 328 | } |
bb56afff | 329 | if ((1. - Float_t(max)/GetNumberOfClusters()) > wrong) label = -label; |
3b57a3f7 | 330 | |
bb56afff | 331 | SetLabel(label); |
3b57a3f7 | 332 | |
333 | return kTRUE; | |
bb56afff | 334 | } |
335 | ||
d9950a5a | 336 | //_______________________________________________________________ |
337 | Bool_t AliTRDtrackV1::CookPID() | |
338 | { | |
2a3191bb | 339 | // |
340 | // Cook the PID information for the track by delegating the omonim function of the tracklets. | |
341 | // Computes the number of tracklets used. The tracklet information are considered independent. | |
342 | // For the moment no global track measurement of PID is performed as for example to estimate | |
343 | // bremsstrahlung probability based on global chi2 of the track. | |
344 | // | |
345 | // The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the | |
346 | //TRD for tracks with 6 tacklets is displayed below. | |
347 | //Begin_Html | |
348 | //<img src="TRD/trackPID.gif"> | |
349 | //End_Html | |
350 | // | |
9dcc64cc | 351 | const AliTRDPIDResponse *pidResponse = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod()); |
352 | if(!pidResponse){ | |
353 | AliError("PID Response not available"); | |
eb2b4f91 | 354 | return kFALSE; |
3b57a3f7 | 355 | } |
9dcc64cc | 356 | Int_t nslices = pidResponse->GetNumberOfSlices(); |
357 | Double_t dEdx[kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN]; | |
358 | Float_t trackletP[kNplane]; | |
359 | memset(dEdx, 0, sizeof(Double_t) * kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN); | |
360 | memset(trackletP, 0, sizeof(Float_t)*kNplane); | |
361 | for(Int_t iseed = 0; iseed < kNplane; iseed++){ | |
362 | if(!fTracklet[iseed]) continue; | |
363 | trackletP[iseed] = fTracklet[iseed]->GetMomentum(); | |
3335de10 | 364 | fTracklet[iseed]->SetPID(); |
9dcc64cc | 365 | if(pidResponse->GetPIDmethod() == AliTRDPIDResponse::kLQ1D){ |
366 | dEdx[iseed] = fTracklet[iseed]->GetdQdl(); | |
367 | } else { | |
93fc2389 | 368 | fTracklet[iseed]->CookdEdx(nslices); |
9dcc64cc | 369 | const Float_t *trackletdEdx = fTracklet[iseed]->GetdEdx(); |
370 | for(Int_t islice = 0; islice < nslices; islice++){ | |
371 | dEdx[iseed*nslices + islice] = trackletdEdx[islice]; | |
372 | } | |
9dcc64cc | 373 | } |
374 | } | |
375 | pidResponse->GetResponse(nslices, dEdx, trackletP, fPID); | |
eb2b4f91 | 376 | return kTRUE; |
377 | } | |
378 | ||
379 | //___________________________________________________________ | |
380 | UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const | |
381 | { | |
382 | // Retrieve number of tracklets used for PID calculation. | |
383 | ||
e20bef2b | 384 | UChar_t nPID = 0; |
3b57a3f7 | 385 | for(int ip=0; ip<kNplane; ip++){ |
68f9b6bd | 386 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 387 | if(!fTracklet[ip]->IsOK()) continue; |
3b57a3f7 | 388 | |
e20bef2b | 389 | nPID++; |
0906e73e | 390 | } |
e20bef2b | 391 | return nPID; |
eb2b4f91 | 392 | } |
393 | ||
0349cc67 | 394 | //_______________________________________________________________ |
395 | AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id) | |
396 | { | |
4d6aee34 | 397 | // Get the cluster at a certain position in the track |
0349cc67 | 398 | Int_t n = 0; |
399 | for(Int_t ip=0; ip<kNplane; ip++){ | |
400 | if(!fTracklet[ip]) continue; | |
401 | if(n+fTracklet[ip]->GetN() <= id){ | |
402 | n+=fTracklet[ip]->GetN(); | |
403 | continue; | |
404 | } | |
4d6aee34 | 405 | AliTRDcluster *c = NULL; |
8d2bec9e | 406 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
0349cc67 | 407 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
408 | ||
409 | if(n<id){n++; continue;} | |
410 | return c; | |
411 | } | |
412 | } | |
4d6aee34 | 413 | return NULL; |
0349cc67 | 414 | } |
415 | ||
3b57a3f7 | 416 | //_______________________________________________________________ |
417 | Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const | |
418 | { | |
4d6aee34 | 419 | // Get the cluster index at a certain position in the track |
3b57a3f7 | 420 | Int_t n = 0; |
421 | for(Int_t ip=0; ip<kNplane; ip++){ | |
422 | if(!fTracklet[ip]) continue; | |
76b60503 | 423 | if(n+fTracklet[ip]->GetN() <= id){ |
3b57a3f7 | 424 | n+=fTracklet[ip]->GetN(); |
425 | continue; | |
426 | } | |
8d2bec9e | 427 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
87f70a90 | 428 | if(!(fTracklet[ip]->GetClusters(ic))) continue; |
76b60503 | 429 | if(n<id){n++; continue;} |
3b57a3f7 | 430 | return fTracklet[ip]->GetIndexes(ic); |
431 | } | |
432 | } | |
433 | return -1; | |
0906e73e | 434 | } |
d9950a5a | 435 | |
436 | //_______________________________________________________________ | |
b72f4eaf | 437 | Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const |
d9950a5a | 438 | { |
ed15ef4f | 439 | // Compute chi2 between tracklet and track. The value is calculated at the radial position of the track |
440 | // equal to the reference radial position of the tracklet (see AliTRDseedV1) | |
441 | // | |
442 | // The chi2 estimator is computed according to the following formula | |
443 | // BEGIN_LATEX | |
444 | // #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T} | |
445 | // END_LATEX | |
446 | // where X=(y z), the position of the track/tracklet in the yz plane | |
447 | // | |
448 | ||
b72f4eaf | 449 | Double_t p[2] = { trklt->GetY(), trklt->GetZ()}; |
450 | trklt->GetCovAt(trklt->GetX(), cov); | |
ed15ef4f | 451 | return AliExternalTrackParam::GetPredictedChi2(p, cov); |
3b57a3f7 | 452 | } |
d9950a5a | 453 | |
eb2b4f91 | 454 | //_______________________________________________________________ |
455 | Int_t AliTRDtrackV1::GetSector() const | |
456 | { | |
457 | return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector)); | |
458 | } | |
459 | ||
203967fc | 460 | //_______________________________________________________________ |
461 | Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const | |
462 | { | |
4d6aee34 | 463 | // Checks whether two tracks are equal |
203967fc | 464 | if (!o) return kFALSE; |
465 | const AliTRDtrackV1 *inTrack = dynamic_cast<const AliTRDtrackV1*>(o); | |
466 | if (!inTrack) return kFALSE; | |
467 | ||
eb2b4f91 | 468 | //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE; |
203967fc | 469 | |
d8069611 | 470 | if(memcmp(fPID, inTrack->fPID, AliPID::kSPECIES*sizeof(Double32_t))) return kFALSE; |
471 | if(memcmp(fBudget, inTrack->fBudget, 3*sizeof(Double32_t))) return kFALSE; | |
472 | if(memcmp(&fDE, &inTrack->fDE, sizeof(Double32_t))) return kFALSE; | |
473 | if(memcmp(&fFakeRatio, &inTrack->fFakeRatio, sizeof(Double32_t))) return kFALSE; | |
474 | if(memcmp(&fChi2, &inTrack->fChi2, sizeof(Double32_t))) return kFALSE; | |
475 | if(memcmp(&fMass, &inTrack->fMass, sizeof(Double32_t))) return kFALSE; | |
476 | if( fLab != inTrack->fLab ) return kFALSE; | |
477 | if( fN != inTrack->fN ) return kFALSE; | |
478 | Double32_t l(0.), in(0.); | |
479 | l = GetIntegratedLength(); in = inTrack->GetIntegratedLength(); | |
480 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
481 | l=GetX(); in=inTrack->GetX(); | |
482 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
483 | l = GetAlpha(); in = inTrack->GetAlpha(); | |
484 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
485 | if(memcmp(GetParameter(), inTrack->GetParameter(), 5*sizeof(Double32_t))) return kFALSE; | |
486 | if(memcmp(GetCovariance(), inTrack->GetCovariance(), 15*sizeof(Double32_t))) return kFALSE; | |
203967fc | 487 | |
488 | for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){ | |
489 | AliTRDseedV1 *curTracklet = fTracklet[iTracklet]; | |
490 | AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet); | |
491 | if (curTracklet && inTracklet){ | |
492 | if (! curTracklet->IsEqual(inTracklet) ) { | |
493 | curTracklet->Print(); | |
494 | inTracklet->Print(); | |
495 | return kFALSE; | |
496 | } | |
497 | } else { | |
498 | // if one tracklet exists, and corresponding | |
499 | // in other track doesn't - return kFALSE | |
500 | if(inTracklet || curTracklet) return kFALSE; | |
501 | } | |
502 | } | |
503 | ||
504 | return kTRUE; | |
505 | } | |
506 | ||
22a4ab0c | 507 | //_______________________________________________________________ |
508 | Bool_t AliTRDtrackV1::IsElectron() const | |
509 | { | |
4d6aee34 | 510 | if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE; |
22a4ab0c | 511 | return kFALSE; |
512 | } | |
513 | ||
3b57a3f7 | 514 | |
515 | //_____________________________________________________________________________ | |
b453ef55 | 516 | Int_t AliTRDtrackV1::MakeBackupTrack() |
3b57a3f7 | 517 | { |
b453ef55 | 518 | // |
519 | // Creates a backup track | |
520 | // TO DO update quality check of the track. | |
521 | // | |
522 | ||
523 | Float_t occupancy(0.); Int_t n(0), ncls(0); | |
524 | for(Int_t il(AliTRDgeometry::kNlayer); il--;){ | |
525 | if(!fTracklet[il]) continue; | |
526 | n++; | |
527 | occupancy+=fTracklet[il]->GetOccupancyTB(); | |
528 | ncls += fTracklet[il]->GetN(); | |
529 | } | |
530 | if(!n) return -1; | |
531 | occupancy/=n; | |
532 | ||
533 | //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); | |
534 | ||
535 | Int_t failedCutId(0); | |
536 | if(GetChi2()/n > 5.0) failedCutId=1; | |
537 | if(occupancy < 0.7) failedCutId=2; | |
538 | //if(ratio1 > 0.6) && | |
539 | //if(ratio0+ratio1 > 1.5) && | |
540 | if(GetNCross() != 0) failedCutId=3; | |
541 | if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4; | |
542 | if(ncls < 20) failedCutId=5; | |
543 | ||
544 | if(failedCutId){ | |
545 | AliDebug(2, Form("\n" | |
546 | "chi2/tracklet < 5.0 [%c] %5.2f\n" | |
547 | "occupancy > 0.7 [%c] %4.2f\n" | |
548 | "NCross == 0 [%c] %d\n" | |
549 | "Abs(snp) < 0.85 [%c] %4.2f\n" | |
550 | "NClusters > 20 [%c] %d" | |
551 | ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n | |
552 | ,(occupancy>0.7)?'y':'n', occupancy | |
553 | ,(GetNCross()==0)?'y':'n', GetNCross() | |
554 | ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp()) | |
555 | ,(ncls>20)?'y':'n', ncls | |
556 | )); | |
557 | return failedCutId; | |
558 | } | |
3b57a3f7 | 559 | |
560 | if(fBackupTrack) { | |
561 | fBackupTrack->~AliTRDtrackV1(); | |
562 | new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 563 | return 0; |
3b57a3f7 | 564 | } |
565 | fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 566 | return 0; |
d9950a5a | 567 | } |
568 | ||
3b57a3f7 | 569 | //_____________________________________________________________________________ |
f8a9723f | 570 | Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) const |
3b57a3f7 | 571 | { |
572 | // | |
573 | // Find a prolongation at given x | |
530fb4e2 | 574 | // Return -1 if it does not exist |
3b57a3f7 | 575 | // |
576 | ||
577 | Double_t bz = GetBz(); | |
530fb4e2 | 578 | if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1; |
579 | if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1; | |
3b57a3f7 | 580 | |
581 | return 1; | |
582 | ||
583 | } | |
584 | ||
585 | //_____________________________________________________________________________ | |
586 | Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho) | |
0906e73e | 587 | { |
588 | // | |
3b57a3f7 | 589 | // Propagates this track to a reference plane defined by "xk" [cm] |
590 | // correcting for the mean crossed material. | |
0906e73e | 591 | // |
3b57a3f7 | 592 | // "xx0" - thickness/rad.length [units of the radiation length] |
593 | // "xrho" - thickness*density [g/cm^2] | |
594 | // | |
0906e73e | 595 | |
952051c5 | 596 | if (TMath::Abs(xk - GetX())<AliTRDReconstructor::GetEpsilon()*0.1) return kTRUE; // 10% of the tracker precision |
dc5e390a | 597 | |
307aac71 | 598 | Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation |
dc5e390a | 599 | b[3]; // magnetic field |
307aac71 | 600 | GetBxByBz(b); |
dc5e390a | 601 | if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE; |
602 | ||
307aac71 | 603 | // local track position AFTER propagation |
604 | Double_t xyz1[3] = {GetX(), GetY(), GetZ()}; | |
dc5e390a | 605 | if(xyz0[0] < xk) { |
3b57a3f7 | 606 | xrho = -xrho; |
607 | if (IsStartedTimeIntegral()) { | |
dc5e390a | 608 | Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
609 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]) | |
610 | + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); | |
6790f7d7 | 611 | Double_t crv = AliExternalTrackParam::GetC(b[2]); |
3b57a3f7 | 612 | if (TMath::Abs(l2*crv) > 0.0001) { |
613 | // Make correction for curvature if neccesary | |
dc5e390a | 614 | l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
615 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])); | |
3b57a3f7 | 616 | l2 = 2.0 * TMath::ASin(l2 * crv) / crv; |
dc5e390a | 617 | l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); |
3b57a3f7 | 618 | } |
619 | AddTimeStep(l2); | |
620 | } | |
621 | } | |
622 | ||
fd40f855 | 623 | if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, GetMass())) return kFALSE; |
624 | ||
3b57a3f7 | 625 | |
626 | { | |
627 | ||
628 | // Energy losses | |
629 | Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (GetSigned1Pt()*GetSigned1Pt()); | |
630 | Double_t beta2 = p2 / (p2 + GetMass()*GetMass()); | |
631 | if ((beta2 < 1.0e-10) || | |
632 | ((5940.0 * beta2/(1.0 - beta2 + 1.0e-10) - beta2) < 0.0)) { | |
633 | return kFALSE; | |
634 | } | |
635 | ||
636 | Double_t dE = 0.153e-3 / beta2 | |
637 | * (TMath::Log(5940.0 * beta2/(1.0 - beta2 + 1.0e-10)) - beta2) | |
638 | * xrho; | |
639 | fBudget[0] += xrho; | |
640 | ||
641 | /* | |
642 | // Suspicious part - think about it ? | |
643 | Double_t kinE = TMath::Sqrt(p2); | |
644 | if (dE > 0.8*kinE) dE = 0.8 * kinE; // | |
645 | if (dE < 0) dE = 0.0; // Not valid region for Bethe bloch | |
646 | */ | |
647 | ||
648 | fDE += dE; | |
649 | ||
650 | /* | |
651 | // Suspicious ! I.B. | |
652 | Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE)); // Energy loss fluctuation | |
653 | Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+GetMass()*GetMass())/(p2*p2); | |
654 | fCcc += sigmac2; | |
655 | fCee += fX*fX * sigmac2; | |
656 | */ | |
657 | ||
658 | } | |
659 | ||
660 | return kTRUE; | |
0906e73e | 661 | } |
3b57a3f7 | 662 | |
87a7fa94 | 663 | //_____________________________________________________________________________ |
3b57a3f7 | 664 | Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) |
87a7fa94 | 665 | { |
666 | // | |
3b57a3f7 | 667 | // Propagate track to the radial position |
668 | // Rotation always connected to the last track position | |
87a7fa94 | 669 | // |
670 | ||
3b57a3f7 | 671 | Double_t xyz0[3]; |
672 | Double_t xyz1[3]; | |
673 | Double_t y; | |
674 | Double_t z; | |
675 | ||
676 | Double_t radius = TMath::Sqrt(GetX()*GetX() + GetY()*GetY()); | |
677 | // Direction +- | |
678 | Double_t dir = (radius > r) ? -1.0 : 1.0; | |
679 | ||
680 | for (Double_t x = radius+dir*step; dir*x < dir*r; x += dir*step) { | |
681 | ||
682 | GetXYZ(xyz0); | |
683 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
684 | Rotate(alpha,kTRUE); | |
685 | GetXYZ(xyz0); | |
e20bef2b | 686 | if(GetProlongation(x,y,z)<0) return -1; |
3b57a3f7 | 687 | xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
688 | xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
689 | xyz1[2] = z; | |
690 | Double_t param[7]; | |
83dea92e | 691 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1; |
3b57a3f7 | 692 | if (param[1] <= 0) { |
693 | param[1] = 100000000; | |
694 | } | |
695 | PropagateTo(x,param[1],param[0]*param[4]); | |
696 | ||
697 | } | |
698 | ||
699 | GetXYZ(xyz0); | |
700 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
701 | Rotate(alpha,kTRUE); | |
702 | GetXYZ(xyz0); | |
530fb4e2 | 703 | if(GetProlongation(r,y,z)<0) return -1; |
3b57a3f7 | 704 | xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
705 | xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
706 | xyz1[2] = z; | |
707 | Double_t param[7]; | |
83dea92e | 708 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1; |
3b57a3f7 | 709 | |
710 | if (param[1] <= 0) { | |
711 | param[1] = 100000000; | |
87a7fa94 | 712 | } |
3b57a3f7 | 713 | PropagateTo(r,param[1],param[0]*param[4]); |
714 | ||
715 | return 0; | |
716 | ||
87a7fa94 | 717 | } |
718 | ||
203967fc | 719 | //_____________________________________________________________________________ |
720 | void AliTRDtrackV1::Print(Option_t *o) const | |
721 | { | |
4d6aee34 | 722 | // Print track status |
eb2b4f91 | 723 | 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 | 724 | AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2])); |
725 | ||
726 | AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass)); | |
eb2b4f91 | 727 | AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab)); |
203967fc | 728 | |
203967fc | 729 | printf("|X| = ("); |
730 | const Double_t *curP = GetParameter(); | |
731 | for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]); | |
732 | printf(")\n"); | |
733 | ||
734 | printf("|V| = \n"); | |
735 | const Double_t *curC = GetCovariance(); | |
736 | for (Int_t i = 0, j=4, k=0; i<15; i++, k++){ | |
737 | printf("%7.2f ", curC[i]); | |
738 | if(k==j){ | |
739 | printf("\n"); | |
740 | k=-1; j--; | |
741 | } | |
742 | } | |
0217fcd0 | 743 | if(strcmp(o, "a")!=0) return; |
203967fc | 744 | |
745 | for(Int_t ip=0; ip<kNplane; ip++){ | |
746 | if(!fTracklet[ip]) continue; | |
747 | fTracklet[ip]->Print(o); | |
748 | } | |
749 | } | |
750 | ||
751 | ||
3b57a3f7 | 752 | //_____________________________________________________________________________ |
753 | Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute) | |
754 | { | |
755 | // | |
756 | // Rotates track parameters in R*phi plane | |
757 | // if absolute rotation alpha is in global system | |
758 | // otherwise alpha rotation is relative to the current rotation angle | |
759 | // | |
760 | ||
761 | if (absolute) alpha -= GetAlpha(); | |
762 | //else fNRotate++; | |
763 | ||
764 | return AliExternalTrackParam::Rotate(GetAlpha()+alpha); | |
765 | } | |
87a7fa94 | 766 | |
eb38ed55 | 767 | //___________________________________________________________ |
768 | void AliTRDtrackV1::SetNumberOfClusters() | |
769 | { | |
770 | // Calculate the number of clusters attached to this track | |
771 | ||
3b57a3f7 | 772 | Int_t ncls = 0; |
773 | for(int ip=0; ip<kNplane; ip++){ | |
68f9b6bd | 774 | if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN(); |
3b57a3f7 | 775 | } |
776 | AliKalmanTrack::SetNumberOfClusters(ncls); | |
eb38ed55 | 777 | } |
778 | ||
779 | ||
0906e73e | 780 | //_______________________________________________________________ |
3b57a3f7 | 781 | void AliTRDtrackV1::SetOwner() |
0906e73e | 782 | { |
783 | // | |
784 | // Toggle ownership of tracklets | |
785 | // | |
786 | ||
e44586fb | 787 | if(TestBit(kOwner)) return; |
3b57a3f7 | 788 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 789 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 790 | fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]); |
791 | fTracklet[ip]->SetOwner(); | |
792 | } | |
e44586fb | 793 | SetBit(kOwner); |
0906e73e | 794 | } |
795 | ||
d9950a5a | 796 | //_______________________________________________________________ |
4d6aee34 | 797 | void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index) |
d9950a5a | 798 | { |
799 | // | |
0906e73e | 800 | // Set the tracklets |
d9950a5a | 801 | // |
3b57a3f7 | 802 | Int_t plane = trklt->GetPlane(); |
76b60503 | 803 | |
3b57a3f7 | 804 | fTracklet[plane] = trklt; |
805 | fTrackletIndex[plane] = index; | |
d9950a5a | 806 | } |
807 | ||
e3cf3d02 | 808 | //_______________________________________________________________ |
a310e49b | 809 | void AliTRDtrackV1::SetTrackIn() |
e3cf3d02 | 810 | { |
fc6d4c2d | 811 | // Save location of birth for the TRD track |
812 | // If the pointer is not valid allocate memory | |
813 | // | |
e3cf3d02 | 814 | const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 815 | |
5d4510fe | 816 | //printf("SetTrackIn() : fTrackLow[%p]\n", (void*)fTrackLow); |
fc6d4c2d | 817 | if(fTrackLow){ |
818 | fTrackLow->~AliExternalTrackParam(); | |
819 | new(fTrackLow) AliExternalTrackParam(*op); | |
820 | } else fTrackLow = new AliExternalTrackParam(*op); | |
e3cf3d02 | 821 | } |
822 | ||
823 | //_______________________________________________________________ | |
a310e49b | 824 | void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op) |
e3cf3d02 | 825 | { |
fc6d4c2d | 826 | // Save location of death for the TRD track |
827 | // If the pointer is not valid allocate memory | |
828 | // | |
e3cf3d02 | 829 | if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 830 | if(fTrackHigh){ |
831 | fTrackHigh->~AliExternalTrackParam(); | |
832 | new(fTrackHigh) AliExternalTrackParam(*op); | |
833 | } else fTrackHigh = new AliExternalTrackParam(*op); | |
e3cf3d02 | 834 | } |
835 | ||
181d2c97 | 836 | //_______________________________________________________________ |
837 | void AliTRDtrackV1::UnsetTracklet(Int_t plane) | |
838 | { | |
87f70a90 | 839 | if(plane<0) return; |
17896e82 | 840 | fTrackletIndex[plane] = -1; |
4d6aee34 | 841 | fTracklet[plane] = NULL; |
181d2c97 | 842 | } |
843 | ||
844 | ||
d9950a5a | 845 | //_______________________________________________________________ |
ef867f55 | 846 | void AliTRDtrackV1::UpdateChi2(Float_t chi2) |
d9950a5a | 847 | { |
ef867f55 | 848 | // Update chi2/track with one tracklet contribution |
b72f4eaf | 849 | SetChi2(GetChi2() + chi2); |
d9950a5a | 850 | } |
851 | ||
852 | //_______________________________________________________________ | |
0906e73e | 853 | void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track) |
d9950a5a | 854 | { |
855 | // | |
6984f7c1 | 856 | // Update the TRD PID information in the ESD track |
d9950a5a | 857 | // |
6984f7c1 | 858 | |
93fc2389 | 859 | // Int_t nslices = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod())->GetNumberOfSlices(); |
e20bef2b | 860 | // number of tracklets used for PID calculation |
861 | UChar_t nPID = GetNumberOfTrackletsPID(); | |
862 | // number of tracklets attached to the track | |
863 | UChar_t nTrk = GetNumberOfTracklets(); | |
864 | // pack the two numbers together and store them in the ESD | |
865 | track->SetTRDntracklets(nPID | (nTrk<<3)); | |
866 | // allocate space to store raw PID signals dEdx & momentum | |
93fc2389 | 867 | track->SetNumberOfTRDslices((AliTRDPIDResponse::kNslicesNN+3)*AliTRDgeometry::kNlayer); |
e20bef2b | 868 | // store raw signals |
7b23a4e1 | 869 | Float_t p, sp; Double_t spd; |
6984f7c1 | 870 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 871 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
e20bef2b | 872 | if(!fTracklet[ip]->HasPID()) continue; |
93fc2389 | 873 | //printf("Setting slices for tracklet %d\n", ip); |
874 | fTracklet[ip]->CookdEdx(AliTRDPIDResponse::kNslicesNN); | |
4d6aee34 | 875 | const Float_t *dedx = fTracklet[ip]->GetdEdx(); |
93fc2389 | 876 | for (Int_t js = 0; js < AliTRDPIDResponse::kNslicesNN; js++, dedx++){ |
877 | //printf("Slice %d, dEdx %f\n", js, *dedx); | |
878 | track->SetTRDslice(*dedx, ip, js+1); | |
879 | } | |
9dcc64cc | 880 | p = fTracklet[ip]->GetMomentum(&sp); |
881 | // 04.01.11 A.Bercuci | |
882 | // store global dQdl per tracklet instead of momentum error | |
883 | spd = sp; | |
7b23a4e1 | 884 | track->SetTRDmomentum(p, ip, &spd); |
93fc2389 | 885 | //printf("Total Charge %f\n", fTracklet[ip]->GetdQdl()); |
9dcc64cc | 886 | track->SetTRDslice(fTracklet[ip]->GetdQdl(), ip, 0); // Set Summed dEdx into the first slice |
6984f7c1 | 887 | } |
e20bef2b | 888 | // store PID probabilities |
889 | track->SetTRDpid(fPID); | |
d9950a5a | 890 | } |