]>
Commit | Line | Data |
---|---|---|
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) |
d0037ea4 | 51 | ,fNchamberdEdx(0) |
52 | ,fNclusterdEdx(0) | |
4d6aee34 | 53 | ,fkReconstructor(NULL) |
54 | ,fBackupTrack(NULL) | |
55 | ,fTrackLow(NULL) | |
56 | ,fTrackHigh(NULL) | |
0906e73e | 57 | { |
d9950a5a | 58 | // |
59 | // Default constructor | |
60 | // | |
6e49cfdb | 61 | //printf("AliTRDtrackV1::AliTRDtrackV1()\n"); |
e44586fb | 62 | |
3b57a3f7 | 63 | for(int i =0; i<3; i++) fBudget[i] = 0.; |
64 | ||
65 | Float_t pid = 1./AliPID::kSPECIES; | |
66 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
67 | ||
68 | for(int ip=0; ip<kNplane; ip++){ | |
17896e82 | 69 | fTrackletIndex[ip] = -1; |
4d6aee34 | 70 | fTracklet[ip] = NULL; |
3b57a3f7 | 71 | } |
d9950a5a | 72 | } |
73 | ||
74 | //_______________________________________________________________ | |
3b57a3f7 | 75 | AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref) |
eb2b4f91 | 76 | ,fStatus(ref.fStatus) |
352cef8f | 77 | ,fESDid(ref.fESDid) |
3b57a3f7 | 78 | ,fDE(ref.fDE) |
e2a1c98b | 79 | ,fTruncatedMean(ref.fTruncatedMean) |
d0037ea4 | 80 | ,fNchamberdEdx(ref.fNchamberdEdx) |
81 | ,fNclusterdEdx(ref.fNclusterdEdx) | |
4d6aee34 | 82 | ,fkReconstructor(ref.fkReconstructor) |
83 | ,fBackupTrack(NULL) | |
84 | ,fTrackLow(NULL) | |
85 | ,fTrackHigh(NULL) | |
d9950a5a | 86 | { |
87 | // | |
3b57a3f7 | 88 | // Copy constructor |
d9950a5a | 89 | // |
90 | ||
6e49cfdb | 91 | //printf("AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &)\n"); |
29b87567 | 92 | SetBit(kOwner, kFALSE); |
3b57a3f7 | 93 | for(int ip=0; ip<kNplane; ip++){ |
94 | fTrackletIndex[ip] = ref.fTrackletIndex[ip]; | |
95 | fTracklet[ip] = ref.fTracklet[ip]; | |
96 | } | |
e3cf3d02 | 97 | if(ref.fTrackLow) fTrackLow = new AliExternalTrackParam(*ref.fTrackLow); |
98 | if(ref.fTrackHigh) fTrackHigh = new AliExternalTrackParam(*ref.fTrackHigh); | |
99 | ||
3b57a3f7 | 100 | for (Int_t i = 0; i < 3;i++) fBudget[i] = ref.fBudget[i]; |
101 | ||
102 | for(Int_t is = 0; is<AliPID::kSPECIES; is++) fPID[is] = ref.fPID[is]; | |
103 | ||
104 | AliKalmanTrack::SetNumberOfClusters(ref.GetNumberOfClusters()); | |
d9950a5a | 105 | } |
106 | ||
107 | //_______________________________________________________________ | |
3b57a3f7 | 108 | AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack() |
eb2b4f91 | 109 | ,fStatus(0) |
352cef8f | 110 | ,fESDid(0) |
3b57a3f7 | 111 | ,fDE(0.) |
e2a1c98b | 112 | ,fTruncatedMean(0) |
d0037ea4 | 113 | ,fNchamberdEdx(0) |
114 | ,fNclusterdEdx(0) | |
4d6aee34 | 115 | ,fkReconstructor(NULL) |
116 | ,fBackupTrack(NULL) | |
117 | ,fTrackLow(NULL) | |
118 | ,fTrackHigh(NULL) | |
d9950a5a | 119 | { |
120 | // | |
3b57a3f7 | 121 | // Constructor from AliESDtrack |
d9950a5a | 122 | // |
123 | ||
352cef8f | 124 | SetESDid(t.GetID()); |
3b57a3f7 | 125 | SetLabel(t.GetLabel()); |
126 | SetChi2(0.0); | |
0b433f72 | 127 | |
35315297 | 128 | SetMass(t.GetMass(kTRUE)); |
3b57a3f7 | 129 | AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls()); |
17896e82 | 130 | Int_t ti[]={-1, -1, -1, -1, -1, -1}; t.GetTRDtracklets(&ti[0]); |
3b57a3f7 | 131 | for(int ip=0; ip<kNplane; ip++){ |
17896e82 | 132 | fTrackletIndex[ip] = ti[ip]; |
4d6aee34 | 133 | fTracklet[ip] = NULL; |
3b57a3f7 | 134 | } |
135 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
136 | ||
137 | Float_t pid = 1./AliPID::kSPECIES; | |
138 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
139 | ||
140 | const AliExternalTrackParam *par = &t; | |
141 | if (t.GetStatus() & AliESDtrack::kTRDbackup) { | |
142 | par = t.GetOuterParam(); | |
143 | if (!par) { | |
144 | AliError("No backup info!"); | |
145 | par = &t; | |
146 | } | |
147 | } | |
148 | Set(par->GetX() | |
149 | ,par->GetAlpha() | |
150 | ,par->GetParameter() | |
151 | ,par->GetCovariance()); | |
152 | ||
153 | if(t.GetStatus() & AliESDtrack::kTIME) { | |
154 | StartTimeIntegral(); | |
155 | Double_t times[10]; | |
156 | t.GetIntegratedTimes(times); | |
157 | SetIntegratedTimes(times); | |
158 | SetIntegratedLength(t.GetIntegratedLength()); | |
159 | } | |
d9950a5a | 160 | } |
161 | ||
d9950a5a | 162 | //_______________________________________________________________ |
e17f4785 | 163 | AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15] |
3b57a3f7 | 164 | , Double_t x, Double_t alpha) : AliKalmanTrack() |
eb2b4f91 | 165 | ,fStatus(0) |
352cef8f | 166 | ,fESDid(0) |
3b57a3f7 | 167 | ,fDE(0.) |
e2a1c98b | 168 | ,fTruncatedMean(0) |
d0037ea4 | 169 | ,fNchamberdEdx(0) |
170 | ,fNclusterdEdx(0) | |
4d6aee34 | 171 | ,fkReconstructor(NULL) |
172 | ,fBackupTrack(NULL) | |
173 | ,fTrackLow(NULL) | |
174 | ,fTrackHigh(NULL) | |
d9950a5a | 175 | { |
0906e73e | 176 | // |
177 | // The stand alone tracking constructor | |
178 | // TEMPORARY !!!!!!!!!!! | |
179 | // to check : | |
180 | // 1. covariance matrix | |
181 | // 2. dQdl calculation | |
182 | // | |
d9950a5a | 183 | |
68f9b6bd | 184 | Double_t b(GetBz()); |
185 | Double_t cnv = (TMath::Abs(b) < 1.e-5) ? 1.e5 : 1./GetBz()/kB2C; | |
186 | ||
d9950a5a | 187 | Double_t pp[5] = { p[0] |
68f9b6bd | 188 | , p[1] |
189 | , p[2] | |
190 | , p[3] | |
191 | , p[4]*cnv }; | |
192 | ||
d9950a5a | 193 | Double_t c22 = x*x*cov[14] - 2*x*cov[12] + cov[ 5]; |
194 | Double_t c32 = x*cov[13] - cov[ 8]; | |
195 | Double_t c20 = x*cov[10] - cov[ 3]; | |
196 | Double_t c21 = x*cov[11] - cov[ 4]; | |
197 | Double_t c42 = x*cov[14] - cov[12]; | |
68f9b6bd | 198 | |
d9950a5a | 199 | Double_t cc[15] = { cov[ 0] |
200 | , cov[ 1], cov[ 2] | |
201 | , c20, c21, c22 | |
202 | , cov[ 6], cov[ 7], c32, cov[ 9] | |
203 | , cov[10]*cnv, cov[11]*cnv, c42*cnv, cov[13]*cnv, cov[14]*cnv*cnv }; | |
68f9b6bd | 204 | |
ae3fbe1f | 205 | Double_t mostProbablePt=AliExternalTrackParam::GetMostProbablePt(); |
206 | Double_t p0=TMath::Sign(1/mostProbablePt,pp[4]); | |
207 | Double_t w0=cc[14]/(cc[14] + p0*p0), w1=p0*p0/(cc[14] + p0*p0); | |
68f9b6bd | 208 | AliDebug(3, Form("Pt mixing : w0[%4.2f] pt0[%5.3f] w1[%4.2f] pt[%5.3f]", w0, 1./p0, w1, 1./pp[4])); |
209 | ||
ae3fbe1f | 210 | pp[4] = w0*p0 + w1*pp[4]; |
211 | cc[10]*=w1; cc[11]*=w1; cc[12]*=w1; cc[13]*=w1; cc[14]*=w1; | |
68f9b6bd | 212 | Set(x,alpha,pp,cc); |
0217fcd0 | 213 | AliDebug(2, Form("Init @ x[%6.2f] pt[%5.3f]", x, 1./pp[4])); |
41702fec | 214 | Int_t ncls = 0; |
68f9b6bd | 215 | for(int iplane=0; iplane<kNplane; iplane++){ |
17896e82 | 216 | fTrackletIndex[iplane] = -1; |
68f9b6bd | 217 | if(!trklts[iplane].IsOK()) fTracklet[iplane] = NULL; |
41702fec | 218 | else{ |
e17f4785 | 219 | fTracklet[iplane] = &trklts[iplane]; |
41702fec | 220 | ncls += fTracklet[iplane]->GetN(); |
221 | } | |
68f9b6bd | 222 | } |
41702fec | 223 | AliKalmanTrack::SetNumberOfClusters(ncls); |
224 | for(int i =0; i<3; i++) fBudget[i] = 0.; | |
225 | ||
226 | Float_t pid = 1./AliPID::kSPECIES; | |
227 | for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid; | |
d9950a5a | 228 | } |
229 | ||
bb56afff | 230 | //_______________________________________________________________ |
3b57a3f7 | 231 | AliTRDtrackV1::~AliTRDtrackV1() |
bb56afff | 232 | { |
4d8f1bd9 | 233 | // Clean up all objects allocated by the track during its lifetime. |
234 | 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 | 235 | |
4d6aee34 | 236 | if(fBackupTrack) delete fBackupTrack; fBackupTrack = NULL; |
e3cf3d02 | 237 | |
4d6aee34 | 238 | if(fTrackLow) delete fTrackLow; fTrackLow = NULL; |
239 | if(fTrackHigh) delete fTrackHigh; fTrackHigh = NULL; | |
bb56afff | 240 | |
76b60503 | 241 | for(Int_t ip=0; ip<kNplane; ip++){ |
242 | if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip]; | |
4d6aee34 | 243 | fTracklet[ip] = NULL; |
17896e82 | 244 | fTrackletIndex[ip] = -1; |
3b57a3f7 | 245 | } |
246 | } | |
247 | ||
e08a5492 | 248 | //_______________________________________________________________ |
249 | AliTRDtrackV1 &AliTRDtrackV1::operator=(const AliTRDtrackV1 &t) | |
250 | { | |
251 | // | |
252 | // Assignment operator | |
253 | // | |
254 | ||
255 | if (this != &t) { | |
5c5d503a | 256 | AliKalmanTrack::operator=(t); |
e08a5492 | 257 | ((AliTRDtrackV1 &) t).Copy(*this); |
258 | } | |
259 | ||
260 | return *this; | |
261 | ||
262 | } | |
263 | ||
264 | //_____________________________________________________________________________ | |
265 | void AliTRDtrackV1::Copy(TObject &t) const | |
266 | { | |
267 | // | |
268 | // Copy function | |
269 | // | |
270 | ||
271 | ((AliTRDtrackV1 &) t).fStatus = fStatus; | |
272 | ((AliTRDtrackV1 &) t).fESDid = fESDid; | |
273 | ((AliTRDtrackV1 &) t).fDE = fDE; | |
274 | ((AliTRDtrackV1 &) t).fkReconstructor = fkReconstructor; | |
275 | ((AliTRDtrackV1 &) t).fBackupTrack = 0x0; | |
276 | ((AliTRDtrackV1 &) t).fTrackLow = 0x0; | |
277 | ((AliTRDtrackV1 &) t).fTrackHigh = 0x0; | |
278 | ||
279 | for(Int_t ip = 0; ip < kNplane; ip++) { | |
280 | ((AliTRDtrackV1 &) t).fTrackletIndex[ip] = fTrackletIndex[ip]; | |
281 | ((AliTRDtrackV1 &) t).fTracklet[ip] = fTracklet[ip]; | |
282 | } | |
283 | if (fTrackLow) { | |
284 | ((AliTRDtrackV1 &) t).fTrackLow = new AliExternalTrackParam(*fTrackLow); | |
285 | } | |
286 | if (fTrackHigh){ | |
287 | ((AliTRDtrackV1 &) t).fTrackHigh = new AliExternalTrackParam(*fTrackHigh); | |
288 | } | |
289 | ||
290 | for (Int_t i = 0; i < 3; i++) { | |
291 | ((AliTRDtrackV1 &) t).fBudget[i] = fBudget[i]; | |
292 | } | |
293 | for (Int_t is = 0; is < AliPID::kSPECIES; is++) { | |
294 | ((AliTRDtrackV1 &) t).fPID[is] = fPID[is]; | |
295 | } | |
296 | ||
297 | } | |
298 | ||
3b57a3f7 | 299 | //_______________________________________________________________ |
e73baf29 | 300 | Int_t AliTRDtrackV1::CookLabel(Float_t wrong, Int_t *labs, Float_t *freq) |
3b57a3f7 | 301 | { |
e73baf29 | 302 | // Set MC label for this track |
303 | // On demand i.e. if arrays "labs" and "freq" are allocated by user returns : | |
304 | // nlabs = the no of distinct labels | |
305 | // labs = array of distinct labels in decreasing order of frequency | |
306 | // freq = frequency of each label in decreasing order | |
bb2db46c | 307 | |
e73baf29 | 308 | Int_t ncl(0); |
309 | if(!(ncl = GetNumberOfClusters())) return 0; | |
310 | ||
311 | Int_t s[2][kMAXCLUSTERSPERTRACK]; | |
bb56afff | 312 | for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) { |
e73baf29 | 313 | s[0][i] = -1; |
314 | s[1][i] = 0; | |
bb56afff | 315 | } |
e73baf29 | 316 | |
317 | Int_t label(-123456789), nlabels(0); | |
318 | AliTRDcluster *c(NULL); | |
319 | for (Int_t ip(0); ip < AliTRDgeometry::kNlayer; ip++) { | |
68f9b6bd | 320 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
e73baf29 | 321 | for (Int_t ic(0); ic < AliTRDseedV1::kNclusters; ic++) { |
3b57a3f7 | 322 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
e73baf29 | 323 | for (Int_t k(0); k < 3; k++) { |
324 | if ((label = c->GetLabel(k)) < 0) continue; | |
325 | Int_t j(0); | |
326 | while(j < kMAXCLUSTERSPERTRACK){ | |
327 | if(s[0][j]!=label && s[1][j]!=0){j++; continue;} | |
328 | if(!s[1][j]) nlabels++; | |
329 | s[0][j] = label; s[1][j]++; | |
330 | break; | |
3b57a3f7 | 331 | } |
332 | } | |
333 | } | |
334 | } | |
e73baf29 | 335 | //printf(" Found %4d labels\n", nlabels); |
336 | Float_t prob(1.); | |
337 | if(!nlabels){ | |
338 | AliError(Form("No MC labels found for track %d.", fESDid)); | |
339 | return 0; | |
340 | } else if(nlabels==1) { | |
341 | label = s[0][0]; | |
342 | if(labs && freq){labs[0]=label; freq[0]=1.;} | |
343 | } else { | |
344 | Int_t idx[kMAXCLUSTERSPERTRACK]; | |
345 | TMath::Sort(nlabels, s[1], idx); | |
346 | label = s[0][idx[0]]; prob = s[1][idx[0]]/Float_t(ncl); | |
347 | if(labs && freq){ | |
348 | for (Int_t i(0); i<nlabels; i++){ | |
349 | labs[i] = s[0][idx[i]]; | |
350 | freq[i] = s[1][idx[i]]/Float_t(ncl); | |
351 | } | |
352 | } | |
bb56afff | 353 | } |
e73baf29 | 354 | SetLabel((1.-prob > wrong)?-label:label); |
355 | return nlabels; | |
bb56afff | 356 | } |
357 | ||
d9950a5a | 358 | //_______________________________________________________________ |
359 | Bool_t AliTRDtrackV1::CookPID() | |
360 | { | |
2a3191bb | 361 | // |
362 | // Cook the PID information for the track by delegating the omonim function of the tracklets. | |
363 | // Computes the number of tracklets used. The tracklet information are considered independent. | |
364 | // For the moment no global track measurement of PID is performed as for example to estimate | |
365 | // bremsstrahlung probability based on global chi2 of the track. | |
366 | // | |
367 | // The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the | |
368 | //TRD for tracks with 6 tacklets is displayed below. | |
369 | //Begin_Html | |
370 | //<img src="TRD/trackPID.gif"> | |
371 | //End_Html | |
372 | // | |
9dcc64cc | 373 | const AliTRDPIDResponse *pidResponse = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod()); |
374 | if(!pidResponse){ | |
375 | AliError("PID Response not available"); | |
eb2b4f91 | 376 | return kFALSE; |
3b57a3f7 | 377 | } |
9dcc64cc | 378 | Int_t nslices = pidResponse->GetNumberOfSlices(); |
379 | Double_t dEdx[kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN]; | |
380 | Float_t trackletP[kNplane]; | |
381 | memset(dEdx, 0, sizeof(Double_t) * kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN); | |
382 | memset(trackletP, 0, sizeof(Float_t)*kNplane); | |
383 | for(Int_t iseed = 0; iseed < kNplane; iseed++){ | |
384 | if(!fTracklet[iseed]) continue; | |
385 | trackletP[iseed] = fTracklet[iseed]->GetMomentum(); | |
3335de10 | 386 | fTracklet[iseed]->SetPID(); |
9dcc64cc | 387 | if(pidResponse->GetPIDmethod() == AliTRDPIDResponse::kLQ1D){ |
388 | dEdx[iseed] = fTracklet[iseed]->GetdQdl(); | |
389 | } else { | |
93fc2389 | 390 | fTracklet[iseed]->CookdEdx(nslices); |
9dcc64cc | 391 | const Float_t *trackletdEdx = fTracklet[iseed]->GetdEdx(); |
392 | for(Int_t islice = 0; islice < nslices; islice++){ | |
393 | dEdx[iseed*nslices + islice] = trackletdEdx[islice]; | |
394 | } | |
9dcc64cc | 395 | } |
396 | } | |
397 | pidResponse->GetResponse(nslices, dEdx, trackletP, fPID); | |
e2a1c98b | 398 | |
9a8b0e85 | 399 | static Int_t nprint = 0; |
400 | if(!nprint){ | |
401 | AliTRDdEdxUtils::PrintControl(); | |
402 | nprint++; | |
403 | } | |
404 | ||
e2a1c98b | 405 | //do truncated mean |
e2a1c98b | 406 | AliTRDdEdxUtils::SetObjPHQ(AliTRDcalibDB::Instance()->GetPHQ()); |
407 | const Double_t mag = AliTRDdEdxUtils::IsExBOn() ? GetBz() : -1; | |
408 | const Double_t charge = AliTRDdEdxUtils::IsExBOn() ? Charge() : -1; | |
d0037ea4 | 409 | fTruncatedMean = CookTruncatedMean(0, mag, charge, kTRUE, fNchamberdEdx, fNclusterdEdx); |
e2a1c98b | 410 | |
eb2b4f91 | 411 | return kTRUE; |
412 | } | |
413 | ||
414 | //___________________________________________________________ | |
415 | UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const | |
416 | { | |
417 | // Retrieve number of tracklets used for PID calculation. | |
418 | ||
e20bef2b | 419 | UChar_t nPID = 0; |
3b57a3f7 | 420 | for(int ip=0; ip<kNplane; ip++){ |
68f9b6bd | 421 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 422 | if(!fTracklet[ip]->IsOK()) continue; |
3b57a3f7 | 423 | |
e20bef2b | 424 | nPID++; |
0906e73e | 425 | } |
e20bef2b | 426 | return nPID; |
eb2b4f91 | 427 | } |
428 | ||
0349cc67 | 429 | //_______________________________________________________________ |
430 | AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id) | |
431 | { | |
4d6aee34 | 432 | // Get the cluster at a certain position in the track |
0349cc67 | 433 | Int_t n = 0; |
434 | for(Int_t ip=0; ip<kNplane; ip++){ | |
435 | if(!fTracklet[ip]) continue; | |
436 | if(n+fTracklet[ip]->GetN() <= id){ | |
437 | n+=fTracklet[ip]->GetN(); | |
438 | continue; | |
439 | } | |
4d6aee34 | 440 | AliTRDcluster *c = NULL; |
8d2bec9e | 441 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
0349cc67 | 442 | if(!(c = fTracklet[ip]->GetClusters(ic))) continue; |
443 | ||
444 | if(n<id){n++; continue;} | |
445 | return c; | |
446 | } | |
447 | } | |
4d6aee34 | 448 | return NULL; |
0349cc67 | 449 | } |
450 | ||
3b57a3f7 | 451 | //_______________________________________________________________ |
452 | Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const | |
453 | { | |
4d6aee34 | 454 | // Get the cluster index at a certain position in the track |
3b57a3f7 | 455 | Int_t n = 0; |
456 | for(Int_t ip=0; ip<kNplane; ip++){ | |
457 | if(!fTracklet[ip]) continue; | |
76b60503 | 458 | if(n+fTracklet[ip]->GetN() <= id){ |
3b57a3f7 | 459 | n+=fTracklet[ip]->GetN(); |
460 | continue; | |
461 | } | |
8d2bec9e | 462 | for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ |
87f70a90 | 463 | if(!(fTracklet[ip]->GetClusters(ic))) continue; |
76b60503 | 464 | if(n<id){n++; continue;} |
3b57a3f7 | 465 | return fTracklet[ip]->GetIndexes(ic); |
466 | } | |
467 | } | |
468 | return -1; | |
0906e73e | 469 | } |
d9950a5a | 470 | |
471 | //_______________________________________________________________ | |
b72f4eaf | 472 | Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const |
d9950a5a | 473 | { |
ed15ef4f | 474 | // Compute chi2 between tracklet and track. The value is calculated at the radial position of the track |
475 | // equal to the reference radial position of the tracklet (see AliTRDseedV1) | |
476 | // | |
477 | // The chi2 estimator is computed according to the following formula | |
478 | // BEGIN_LATEX | |
479 | // #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T} | |
480 | // END_LATEX | |
481 | // where X=(y z), the position of the track/tracklet in the yz plane | |
482 | // | |
483 | ||
b72f4eaf | 484 | Double_t p[2] = { trklt->GetY(), trklt->GetZ()}; |
485 | trklt->GetCovAt(trklt->GetX(), cov); | |
ed15ef4f | 486 | return AliExternalTrackParam::GetPredictedChi2(p, cov); |
3b57a3f7 | 487 | } |
d9950a5a | 488 | |
eb2b4f91 | 489 | //_______________________________________________________________ |
490 | Int_t AliTRDtrackV1::GetSector() const | |
491 | { | |
492 | return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector)); | |
493 | } | |
494 | ||
203967fc | 495 | //_______________________________________________________________ |
496 | Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const | |
497 | { | |
4d6aee34 | 498 | // Checks whether two tracks are equal |
203967fc | 499 | if (!o) return kFALSE; |
500 | const AliTRDtrackV1 *inTrack = dynamic_cast<const AliTRDtrackV1*>(o); | |
501 | if (!inTrack) return kFALSE; | |
502 | ||
eb2b4f91 | 503 | //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE; |
203967fc | 504 | |
d8069611 | 505 | if(memcmp(fPID, inTrack->fPID, AliPID::kSPECIES*sizeof(Double32_t))) return kFALSE; |
506 | if(memcmp(fBudget, inTrack->fBudget, 3*sizeof(Double32_t))) return kFALSE; | |
507 | if(memcmp(&fDE, &inTrack->fDE, sizeof(Double32_t))) return kFALSE; | |
508 | if(memcmp(&fFakeRatio, &inTrack->fFakeRatio, sizeof(Double32_t))) return kFALSE; | |
509 | if(memcmp(&fChi2, &inTrack->fChi2, sizeof(Double32_t))) return kFALSE; | |
510 | if(memcmp(&fMass, &inTrack->fMass, sizeof(Double32_t))) return kFALSE; | |
511 | if( fLab != inTrack->fLab ) return kFALSE; | |
512 | if( fN != inTrack->fN ) return kFALSE; | |
513 | Double32_t l(0.), in(0.); | |
514 | l = GetIntegratedLength(); in = inTrack->GetIntegratedLength(); | |
515 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
516 | l=GetX(); in=inTrack->GetX(); | |
517 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
518 | l = GetAlpha(); in = inTrack->GetAlpha(); | |
519 | if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; | |
520 | if(memcmp(GetParameter(), inTrack->GetParameter(), 5*sizeof(Double32_t))) return kFALSE; | |
521 | if(memcmp(GetCovariance(), inTrack->GetCovariance(), 15*sizeof(Double32_t))) return kFALSE; | |
203967fc | 522 | |
523 | for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){ | |
524 | AliTRDseedV1 *curTracklet = fTracklet[iTracklet]; | |
525 | AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet); | |
526 | if (curTracklet && inTracklet){ | |
527 | if (! curTracklet->IsEqual(inTracklet) ) { | |
528 | curTracklet->Print(); | |
529 | inTracklet->Print(); | |
530 | return kFALSE; | |
531 | } | |
532 | } else { | |
533 | // if one tracklet exists, and corresponding | |
534 | // in other track doesn't - return kFALSE | |
535 | if(inTracklet || curTracklet) return kFALSE; | |
536 | } | |
537 | } | |
538 | ||
539 | return kTRUE; | |
540 | } | |
541 | ||
22a4ab0c | 542 | //_______________________________________________________________ |
543 | Bool_t AliTRDtrackV1::IsElectron() const | |
544 | { | |
4d6aee34 | 545 | if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE; |
22a4ab0c | 546 | return kFALSE; |
547 | } | |
548 | ||
3b57a3f7 | 549 | |
550 | //_____________________________________________________________________________ | |
b453ef55 | 551 | Int_t AliTRDtrackV1::MakeBackupTrack() |
3b57a3f7 | 552 | { |
b453ef55 | 553 | // |
554 | // Creates a backup track | |
555 | // TO DO update quality check of the track. | |
556 | // | |
557 | ||
558 | Float_t occupancy(0.); Int_t n(0), ncls(0); | |
559 | for(Int_t il(AliTRDgeometry::kNlayer); il--;){ | |
560 | if(!fTracklet[il]) continue; | |
561 | n++; | |
5c5d503a | 562 | occupancy+=fTracklet[il]->GetTBoccupancy()/AliTRDseedV1::kNtb; |
b453ef55 | 563 | ncls += fTracklet[il]->GetN(); |
564 | } | |
565 | if(!n) return -1; | |
566 | occupancy/=n; | |
567 | ||
568 | //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); | |
569 | ||
570 | Int_t failedCutId(0); | |
571 | if(GetChi2()/n > 5.0) failedCutId=1; | |
572 | if(occupancy < 0.7) failedCutId=2; | |
573 | //if(ratio1 > 0.6) && | |
574 | //if(ratio0+ratio1 > 1.5) && | |
575 | if(GetNCross() != 0) failedCutId=3; | |
576 | if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4; | |
577 | if(ncls < 20) failedCutId=5; | |
578 | ||
579 | if(failedCutId){ | |
580 | AliDebug(2, Form("\n" | |
581 | "chi2/tracklet < 5.0 [%c] %5.2f\n" | |
582 | "occupancy > 0.7 [%c] %4.2f\n" | |
583 | "NCross == 0 [%c] %d\n" | |
584 | "Abs(snp) < 0.85 [%c] %4.2f\n" | |
585 | "NClusters > 20 [%c] %d" | |
586 | ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n | |
587 | ,(occupancy>0.7)?'y':'n', occupancy | |
588 | ,(GetNCross()==0)?'y':'n', GetNCross() | |
589 | ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp()) | |
590 | ,(ncls>20)?'y':'n', ncls | |
591 | )); | |
592 | return failedCutId; | |
593 | } | |
3b57a3f7 | 594 | |
595 | if(fBackupTrack) { | |
596 | fBackupTrack->~AliTRDtrackV1(); | |
597 | new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 598 | return 0; |
3b57a3f7 | 599 | } |
600 | fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this)); | |
b453ef55 | 601 | return 0; |
d9950a5a | 602 | } |
603 | ||
3b57a3f7 | 604 | //_____________________________________________________________________________ |
f8a9723f | 605 | Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) const |
3b57a3f7 | 606 | { |
607 | // | |
608 | // Find a prolongation at given x | |
530fb4e2 | 609 | // Return -1 if it does not exist |
3b57a3f7 | 610 | // |
611 | ||
612 | Double_t bz = GetBz(); | |
530fb4e2 | 613 | if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1; |
614 | if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1; | |
3b57a3f7 | 615 | |
616 | return 1; | |
617 | ||
618 | } | |
619 | ||
620 | //_____________________________________________________________________________ | |
15a2657d | 621 | Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho) |
0906e73e | 622 | { |
623 | // | |
3b57a3f7 | 624 | // Propagates this track to a reference plane defined by "xk" [cm] |
625 | // correcting for the mean crossed material. | |
0906e73e | 626 | // |
3b57a3f7 | 627 | // "xx0" - thickness/rad.length [units of the radiation length] |
628 | // "xrho" - thickness*density [g/cm^2] | |
629 | // | |
0906e73e | 630 | |
952051c5 | 631 | if (TMath::Abs(xk - GetX())<AliTRDReconstructor::GetEpsilon()*0.1) return kTRUE; // 10% of the tracker precision |
dc5e390a | 632 | |
307aac71 | 633 | Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation |
dc5e390a | 634 | b[3]; // magnetic field |
307aac71 | 635 | GetBxByBz(b); |
dc5e390a | 636 | if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE; |
637 | ||
307aac71 | 638 | // local track position AFTER propagation |
639 | Double_t xyz1[3] = {GetX(), GetY(), GetZ()}; | |
2f4384e6 | 640 | // 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 | 641 | if(xyz0[0] < xk) { |
5c5d503a | 642 | xrho = -xrho; |
3b57a3f7 | 643 | if (IsStartedTimeIntegral()) { |
dc5e390a | 644 | Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
645 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]) | |
646 | + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); | |
6790f7d7 | 647 | Double_t crv = AliExternalTrackParam::GetC(b[2]); |
3b57a3f7 | 648 | if (TMath::Abs(l2*crv) > 0.0001) { |
649 | // Make correction for curvature if neccesary | |
dc5e390a | 650 | l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) |
651 | + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])); | |
3b57a3f7 | 652 | l2 = 2.0 * TMath::ASin(l2 * crv) / crv; |
dc5e390a | 653 | l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); |
3b57a3f7 | 654 | } |
655 | AddTimeStep(l2); | |
656 | } | |
657 | } | |
35315297 | 658 | if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, fMass)) return kFALSE; |
fd40f855 | 659 | |
3b57a3f7 | 660 | |
661 | { | |
662 | ||
663 | // Energy losses | |
664 | Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (GetSigned1Pt()*GetSigned1Pt()); | |
35315297 | 665 | Double_t beta2 = p2 / (p2 + fMass*fMass); |
3b57a3f7 | 666 | if ((beta2 < 1.0e-10) || |
667 | ((5940.0 * beta2/(1.0 - beta2 + 1.0e-10) - beta2) < 0.0)) { | |
668 | return kFALSE; | |
669 | } | |
670 | ||
671 | Double_t dE = 0.153e-3 / beta2 | |
672 | * (TMath::Log(5940.0 * beta2/(1.0 - beta2 + 1.0e-10)) - beta2) | |
673 | * xrho; | |
674 | fBudget[0] += xrho; | |
675 | ||
676 | /* | |
677 | // Suspicious part - think about it ? | |
678 | Double_t kinE = TMath::Sqrt(p2); | |
679 | if (dE > 0.8*kinE) dE = 0.8 * kinE; // | |
680 | if (dE < 0) dE = 0.0; // Not valid region for Bethe bloch | |
681 | */ | |
682 | ||
683 | fDE += dE; | |
684 | ||
685 | /* | |
686 | // Suspicious ! I.B. | |
687 | Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE)); // Energy loss fluctuation | |
35315297 | 688 | Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+fMass*fMass)/(p2*p2); |
3b57a3f7 | 689 | fCcc += sigmac2; |
690 | fCee += fX*fX * sigmac2; | |
691 | */ | |
692 | ||
693 | } | |
694 | ||
695 | return kTRUE; | |
0906e73e | 696 | } |
3b57a3f7 | 697 | |
87a7fa94 | 698 | //_____________________________________________________________________________ |
3b57a3f7 | 699 | Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) |
87a7fa94 | 700 | { |
701 | // | |
3b57a3f7 | 702 | // Propagate track to the radial position |
703 | // Rotation always connected to the last track position | |
87a7fa94 | 704 | // |
705 | ||
3b57a3f7 | 706 | Double_t xyz0[3]; |
707 | Double_t xyz1[3]; | |
708 | Double_t y; | |
709 | Double_t z; | |
710 | ||
711 | Double_t radius = TMath::Sqrt(GetX()*GetX() + GetY()*GetY()); | |
712 | // Direction +- | |
713 | Double_t dir = (radius > r) ? -1.0 : 1.0; | |
714 | ||
715 | for (Double_t x = radius+dir*step; dir*x < dir*r; x += dir*step) { | |
716 | ||
717 | GetXYZ(xyz0); | |
718 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
719 | Rotate(alpha,kTRUE); | |
720 | GetXYZ(xyz0); | |
e20bef2b | 721 | if(GetProlongation(x,y,z)<0) return -1; |
3b57a3f7 | 722 | xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
723 | xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
724 | xyz1[2] = z; | |
725 | Double_t param[7]; | |
83dea92e | 726 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1; |
3b57a3f7 | 727 | if (param[1] <= 0) { |
728 | param[1] = 100000000; | |
729 | } | |
730 | PropagateTo(x,param[1],param[0]*param[4]); | |
731 | ||
732 | } | |
733 | ||
734 | GetXYZ(xyz0); | |
735 | Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); | |
736 | Rotate(alpha,kTRUE); | |
737 | GetXYZ(xyz0); | |
530fb4e2 | 738 | if(GetProlongation(r,y,z)<0) return -1; |
3b57a3f7 | 739 | xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha); |
740 | xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha); | |
741 | xyz1[2] = z; | |
742 | Double_t param[7]; | |
83dea92e | 743 | if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1; |
3b57a3f7 | 744 | |
745 | if (param[1] <= 0) { | |
746 | param[1] = 100000000; | |
87a7fa94 | 747 | } |
3b57a3f7 | 748 | PropagateTo(r,param[1],param[0]*param[4]); |
749 | ||
750 | return 0; | |
751 | ||
87a7fa94 | 752 | } |
753 | ||
203967fc | 754 | //_____________________________________________________________________________ |
755 | void AliTRDtrackV1::Print(Option_t *o) const | |
756 | { | |
4d6aee34 | 757 | // Print track status |
eb2b4f91 | 758 | 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 | 759 | AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2])); |
760 | ||
761 | AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass)); | |
eb2b4f91 | 762 | AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab)); |
203967fc | 763 | |
203967fc | 764 | printf("|X| = ("); |
765 | const Double_t *curP = GetParameter(); | |
766 | for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]); | |
767 | printf(")\n"); | |
768 | ||
769 | printf("|V| = \n"); | |
770 | const Double_t *curC = GetCovariance(); | |
771 | for (Int_t i = 0, j=4, k=0; i<15; i++, k++){ | |
772 | printf("%7.2f ", curC[i]); | |
773 | if(k==j){ | |
774 | printf("\n"); | |
775 | k=-1; j--; | |
776 | } | |
777 | } | |
0217fcd0 | 778 | if(strcmp(o, "a")!=0) return; |
203967fc | 779 | |
780 | for(Int_t ip=0; ip<kNplane; ip++){ | |
781 | if(!fTracklet[ip]) continue; | |
782 | fTracklet[ip]->Print(o); | |
783 | } | |
784 | } | |
785 | ||
786 | ||
3b57a3f7 | 787 | //_____________________________________________________________________________ |
788 | Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute) | |
789 | { | |
790 | // | |
791 | // Rotates track parameters in R*phi plane | |
792 | // if absolute rotation alpha is in global system | |
793 | // otherwise alpha rotation is relative to the current rotation angle | |
794 | // | |
795 | ||
796 | if (absolute) alpha -= GetAlpha(); | |
797 | //else fNRotate++; | |
798 | ||
799 | return AliExternalTrackParam::Rotate(GetAlpha()+alpha); | |
800 | } | |
87a7fa94 | 801 | |
eb38ed55 | 802 | //___________________________________________________________ |
803 | void AliTRDtrackV1::SetNumberOfClusters() | |
804 | { | |
805 | // Calculate the number of clusters attached to this track | |
806 | ||
3b57a3f7 | 807 | Int_t ncls = 0; |
808 | for(int ip=0; ip<kNplane; ip++){ | |
68f9b6bd | 809 | if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN(); |
3b57a3f7 | 810 | } |
811 | AliKalmanTrack::SetNumberOfClusters(ncls); | |
eb38ed55 | 812 | } |
813 | ||
814 | ||
0906e73e | 815 | //_______________________________________________________________ |
3b57a3f7 | 816 | void AliTRDtrackV1::SetOwner() |
0906e73e | 817 | { |
818 | // | |
819 | // Toggle ownership of tracklets | |
820 | // | |
821 | ||
e44586fb | 822 | if(TestBit(kOwner)) return; |
3b57a3f7 | 823 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 824 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
3b57a3f7 | 825 | fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]); |
826 | fTracklet[ip]->SetOwner(); | |
827 | } | |
e44586fb | 828 | SetBit(kOwner); |
0906e73e | 829 | } |
830 | ||
d9950a5a | 831 | //_______________________________________________________________ |
4d6aee34 | 832 | void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index) |
d9950a5a | 833 | { |
834 | // | |
0906e73e | 835 | // Set the tracklets |
d9950a5a | 836 | // |
3b57a3f7 | 837 | Int_t plane = trklt->GetPlane(); |
76b60503 | 838 | |
3b57a3f7 | 839 | fTracklet[plane] = trklt; |
840 | fTrackletIndex[plane] = index; | |
d9950a5a | 841 | } |
842 | ||
e3cf3d02 | 843 | //_______________________________________________________________ |
a310e49b | 844 | void AliTRDtrackV1::SetTrackIn() |
e3cf3d02 | 845 | { |
fc6d4c2d | 846 | // Save location of birth for the TRD track |
847 | // If the pointer is not valid allocate memory | |
848 | // | |
e3cf3d02 | 849 | const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 850 | |
5d4510fe | 851 | //printf("SetTrackIn() : fTrackLow[%p]\n", (void*)fTrackLow); |
fc6d4c2d | 852 | if(fTrackLow){ |
853 | fTrackLow->~AliExternalTrackParam(); | |
854 | new(fTrackLow) AliExternalTrackParam(*op); | |
855 | } else fTrackLow = new AliExternalTrackParam(*op); | |
e3cf3d02 | 856 | } |
857 | ||
858 | //_______________________________________________________________ | |
a310e49b | 859 | void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op) |
e3cf3d02 | 860 | { |
fc6d4c2d | 861 | // Save location of death for the TRD track |
862 | // If the pointer is not valid allocate memory | |
863 | // | |
e3cf3d02 | 864 | if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this); |
fc6d4c2d | 865 | if(fTrackHigh){ |
866 | fTrackHigh->~AliExternalTrackParam(); | |
867 | new(fTrackHigh) AliExternalTrackParam(*op); | |
868 | } else fTrackHigh = new AliExternalTrackParam(*op); | |
e3cf3d02 | 869 | } |
870 | ||
181d2c97 | 871 | //_______________________________________________________________ |
872 | void AliTRDtrackV1::UnsetTracklet(Int_t plane) | |
873 | { | |
87f70a90 | 874 | if(plane<0) return; |
17896e82 | 875 | fTrackletIndex[plane] = -1; |
4d6aee34 | 876 | fTracklet[plane] = NULL; |
181d2c97 | 877 | } |
878 | ||
879 | ||
d9950a5a | 880 | //_______________________________________________________________ |
ef867f55 | 881 | void AliTRDtrackV1::UpdateChi2(Float_t chi2) |
d9950a5a | 882 | { |
ef867f55 | 883 | // Update chi2/track with one tracklet contribution |
b72f4eaf | 884 | SetChi2(GetChi2() + chi2); |
d9950a5a | 885 | } |
886 | ||
887 | //_______________________________________________________________ | |
0906e73e | 888 | void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track) |
d9950a5a | 889 | { |
890 | // | |
6984f7c1 | 891 | // Update the TRD PID information in the ESD track |
d9950a5a | 892 | // |
6984f7c1 | 893 | |
93fc2389 | 894 | // Int_t nslices = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod())->GetNumberOfSlices(); |
e20bef2b | 895 | // number of tracklets used for PID calculation |
896 | UChar_t nPID = GetNumberOfTrackletsPID(); | |
897 | // number of tracklets attached to the track | |
898 | UChar_t nTrk = GetNumberOfTracklets(); | |
899 | // pack the two numbers together and store them in the ESD | |
900 | track->SetTRDntracklets(nPID | (nTrk<<3)); | |
901 | // allocate space to store raw PID signals dEdx & momentum | |
93fc2389 | 902 | track->SetNumberOfTRDslices((AliTRDPIDResponse::kNslicesNN+3)*AliTRDgeometry::kNlayer); |
e20bef2b | 903 | // store raw signals |
7b23a4e1 | 904 | Float_t p, sp; Double_t spd; |
6984f7c1 | 905 | for (Int_t ip = 0; ip < kNplane; ip++) { |
68f9b6bd | 906 | if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; |
e20bef2b | 907 | if(!fTracklet[ip]->HasPID()) continue; |
93fc2389 | 908 | fTracklet[ip]->CookdEdx(AliTRDPIDResponse::kNslicesNN); |
4d6aee34 | 909 | const Float_t *dedx = fTracklet[ip]->GetdEdx(); |
93fc2389 | 910 | for (Int_t js = 0; js < AliTRDPIDResponse::kNslicesNN; js++, dedx++){ |
93fc2389 | 911 | track->SetTRDslice(*dedx, ip, js+1); |
912 | } | |
5554f68d | 913 | p = fTracklet[ip]->GetMomentum(&sp); |
c05ef2e8 | 914 | spd = sp; track->SetTRDmomentum(p, ip, &spd); |
5c5d503a | 915 | // store global quality per tracklet instead of momentum error |
916 | // 26.09.11 A.Bercuci | |
917 | // first implementation store no. of time bins filled in tracklet (5bits see "y" bits) and | |
918 | // no. of double clusters in case of pad row cross (4bits see "x" bits) | |
919 | // bit map for tracklet quality xxxxyyyyy | |
803dc399 | 920 | // 27.10.11 A.Bercuci |
c05ef2e8 | 921 | // add chamber status bit "z" bit |
803dc399 | 922 | // bit map for tracklet quality zxxxxyyyyy |
c05ef2e8 | 923 | // 12.11.11 A.Bercuci |
924 | // fit tracklet quality into the field fTRDTimeBin [Char_t] | |
925 | // bit map for tracklet quality zxxyyyyy | |
5554f68d | 926 | // The information should be retrieved by the following functions of AliESDtrack for each TRD layer |
927 | // GetTRDtrkltOccupancy(layer) -> no of TB filled in tracklet | |
928 | // GetTRDtrkltClCross(layer) -> no of TB filled in crossing pad rows | |
929 | // IsTRDtrkltChmbGood(layer) -> status of the chamber from which the tracklet is found | |
930 | Int_t nCross(fTracklet[ip]->IsRowCross()?fTracklet[ip]->GetTBcross():0); if(nCross>3) nCross = 3; | |
c05ef2e8 | 931 | Char_t trackletQ = Char_t(fTracklet[ip]->GetTBoccupancy() | (nCross<<5) | (fTracklet[ip]->IsChmbGood()<<7)); |
932 | track->SetTRDTimBin(trackletQ, ip); | |
9dcc64cc | 933 | track->SetTRDslice(fTracklet[ip]->GetdQdl(), ip, 0); // Set Summed dEdx into the first slice |
6984f7c1 | 934 | } |
e20bef2b | 935 | // store PID probabilities |
936 | track->SetTRDpid(fPID); | |
e2a1c98b | 937 | |
938 | //store truncated mean | |
939 | track->SetTRDsignal(fTruncatedMean); | |
d0037ea4 | 940 | track->SetTRDNchamberdEdx(fNchamberdEdx); |
941 | track->SetTRDNclusterdEdx(fNclusterdEdx); | |
d9950a5a | 942 | } |
e2a1c98b | 943 | |
944 | //_______________________________________________________________ | |
d0037ea4 | 945 | Double_t AliTRDtrackV1::CookTruncatedMean(const Bool_t kinvq, const Double_t mag, const Int_t charge, const Int_t kcalib, Int_t &nch, Int_t &ncls, TVectorD *Qs, TVectorD *Xs, Int_t timeBin0, Int_t timeBin1, Int_t tstep) const |
e2a1c98b | 946 | { |
947 | // | |
948 | //Origin: Xianguo Lu <xianguo.lu@cern.ch>, Marian Ivanov <marian.ivanov@cern.ch> | |
949 | // | |
950 | ||
951 | TVectorD arrayQ(200), arrayX(200); | |
d0037ea4 | 952 | ncls = AliTRDdEdxUtils::GetArrayClusterQ(kinvq, &arrayQ, &arrayX, this, timeBin0, timeBin1, tstep); |
e2a1c98b | 953 | |
954 | const TObjArray *cobj = kcalib ? AliTRDdEdxUtils::GetObjPHQ(kinvq, mag, charge) : NULL; | |
955 | ||
956 | const Double_t tmean = AliTRDdEdxUtils::ToyCook(kinvq, ncls, &arrayQ, &arrayX, cobj); | |
957 | ||
d0037ea4 | 958 | nch = AliTRDdEdxUtils::UpdateArrayX(ncls, &arrayX); |
e2a1c98b | 959 | |
960 | if(Qs && Xs){ | |
961 | (*Qs)=arrayQ; | |
962 | (*Xs)=arrayX; | |
963 | } | |
964 | ||
d0037ea4 | 965 | printf("\ntest %.10f %d %d\n", tmean, nch, ncls); |
966 | ||
967 | return tmean; | |
e2a1c98b | 968 | } |
969 |