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1ee39b3a | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id: AliTRDtrackInfo.cxx 27496 2008-07-22 08:35:45Z cblume $ */ | |
17 | ||
18 | //////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Reconstruction QA // | |
21 | // // | |
22 | // Authors: // | |
23 | // Alex Bercuci <A.Bercuci@gsi.de> // | |
24 | // Markus Fasel <M.Fasel@gsi.de> // | |
25 | // // | |
26 | //////////////////////////////////////////////////////////////////////////// | |
27 | ||
28 | #include "TDatabasePDG.h" | |
b9ddd472 | 29 | #include "TPDGCode.h" |
4226db3e | 30 | #include "TVectorT.h" |
1ee39b3a | 31 | |
32 | #include "AliTrackReference.h" | |
33 | #include "AliExternalTrackParam.h" | |
34 | ||
35 | #include "AliTRDseedV1.h" | |
36 | #include "AliTRDtrackV1.h" | |
37 | #include "AliTRDgeometry.h" | |
38 | #include "AliTRDtrackerV1.h" | |
39 | ||
40 | #include "AliTRDtrackInfo.h" | |
41 | ||
42 | ClassImp(AliTRDtrackInfo) | |
43 | ClassImp(AliTRDtrackInfo::AliMCinfo) | |
44 | ClassImp(AliTRDtrackInfo::AliESDinfo) | |
5066aa9a | 45 | Double_t AliTRDtrackInfo::AliMCinfo::fgKalmanStep = 2.; |
3ceb45ae | 46 | Bool_t AliTRDtrackInfo::AliMCinfo::fgKalmanUpdate = kTRUE; |
1ee39b3a | 47 | |
48 | //___________________________________________________ | |
49 | AliTRDtrackInfo::AliTRDtrackInfo(): | |
50 | TObject() | |
51 | ,fNClusters(0) | |
f232df0d | 52 | ,fTRDtrack(NULL) |
53 | ,fMC(NULL) | |
1ee39b3a | 54 | ,fESD() |
55 | { | |
56 | // | |
57 | // Default constructor | |
58 | // | |
59 | } | |
60 | ||
61 | ||
62 | //___________________________________________________ | |
63 | AliTRDtrackInfo::AliTRDtrackInfo(const AliTRDtrackInfo &trdInfo): | |
64 | TObject((const TObject&)trdInfo) | |
65 | ,fNClusters(trdInfo.fNClusters) | |
f232df0d | 66 | ,fTRDtrack(NULL) |
a340fe39 | 67 | ,fMC(NULL) |
1ee39b3a | 68 | ,fESD(trdInfo.fESD) |
69 | { | |
70 | // | |
71 | // copy Entries | |
72 | // | |
73 | ||
74 | if(trdInfo.fMC) fMC = new AliMCinfo(*trdInfo.fMC); | |
75 | ||
76 | if(trdInfo.fTRDtrack){ | |
77 | fTRDtrack = new AliTRDtrackV1(*trdInfo.fTRDtrack); | |
78 | if(trdInfo.fTRDtrack->IsOwner()) fTRDtrack->SetOwner(); | |
79 | } | |
80 | } | |
81 | ||
82 | //___________________________________________________ | |
83 | AliTRDtrackInfo::AliMCinfo::AliMCinfo() | |
84 | :fLabel(0) | |
85 | ,fPDG(0) | |
86 | ,fNTrackRefs(0) | |
87 | { | |
88 | // Set 0-Pointers | |
89 | memset(fTrackRefs, 0, sizeof(AliTrackReference *) * 12); | |
90 | } | |
91 | ||
92 | //___________________________________________________ | |
93 | AliTRDtrackInfo::AliMCinfo::AliMCinfo(const AliMCinfo &mc) | |
94 | :fLabel(mc.fLabel) | |
95 | ,fPDG(mc.fPDG) | |
96 | ,fNTrackRefs(mc.fNTrackRefs) | |
97 | { | |
98 | // | |
99 | // Constructor | |
100 | // | |
101 | ||
102 | memset(fTrackRefs, 0, sizeof(AliTrackReference *) * 12); | |
103 | for(Int_t ien = 0; ien < 12; ien++){ | |
104 | if(mc.fTrackRefs[ien]) | |
105 | fTrackRefs[ien] = new AliTrackReference(*(mc.fTrackRefs[ien])); | |
106 | } | |
107 | } | |
108 | ||
b9ddd472 | 109 | //________________________________________________________ |
110 | Int_t AliTRDtrackInfo::AliMCinfo::GetPID() const | |
111 | { | |
61f6b45e | 112 | // Translate pdg code to PID index |
113 | ||
b9ddd472 | 114 | switch(fPDG){ |
115 | case kElectron: | |
116 | case kPositron: return AliPID::kElectron; | |
117 | case kMuonPlus: | |
118 | case kMuonMinus: return AliPID::kMuon; | |
119 | case kPiPlus: | |
120 | case kPiMinus: return AliPID::kPion; | |
121 | case kKPlus: | |
122 | case kKMinus: return AliPID::kKaon; | |
123 | case kProton: | |
124 | case kProtonBar: return AliPID::kProton; | |
125 | } | |
126 | return -1; | |
127 | } | |
128 | ||
1ee39b3a | 129 | //___________________________________________________ |
130 | AliTRDtrackInfo::AliESDinfo::AliESDinfo() | |
b9ddd472 | 131 | :fHasV0(0) |
132 | ,fId(-1) | |
1ee39b3a | 133 | ,fStatus(0) |
134 | ,fKinkIndex(0) | |
135 | ,fTPCncls(0) | |
3ceb45ae | 136 | ,fTOFbc(0) |
1ee39b3a | 137 | ,fTRDpidQuality(0) |
138 | ,fTRDnSlices(0) | |
f232df0d | 139 | ,fTRDslices(NULL) |
140 | ,fOP(NULL) | |
1ee39b3a | 141 | { |
142 | // | |
143 | // Constructor | |
144 | // | |
145 | ||
146 | memset(fTRDr, 0, AliPID::kSPECIES*sizeof(Double32_t)); | |
d80a6a00 | 147 | memset(fTRDv0pid, 0, AliPID::kSPECIES*sizeof(Int_t)); |
1ee39b3a | 148 | } |
149 | ||
150 | //___________________________________________________ | |
151 | AliTRDtrackInfo::AliESDinfo::AliESDinfo(const AliESDinfo &esd) | |
b9ddd472 | 152 | :fHasV0(esd.fHasV0) |
153 | ,fId(esd.fId) | |
1ee39b3a | 154 | ,fStatus(esd.fStatus) |
155 | ,fKinkIndex(esd.fKinkIndex) | |
156 | ,fTPCncls(esd.fTPCncls) | |
3ceb45ae | 157 | ,fTOFbc(esd.fTOFbc) |
1ee39b3a | 158 | ,fTRDpidQuality(esd.fTRDpidQuality) |
159 | ,fTRDnSlices(esd.fTRDnSlices) | |
f232df0d | 160 | ,fTRDslices(NULL) |
161 | ,fOP(NULL) | |
1ee39b3a | 162 | { |
163 | // | |
164 | // Constructor | |
165 | // | |
166 | ||
167 | memcpy(fTRDr, esd.fTRDr, AliPID::kSPECIES*sizeof(Double32_t)); | |
d80a6a00 | 168 | memcpy(fTRDv0pid, esd.fTRDv0pid, AliPID::kSPECIES*sizeof(Int_t)); |
1ee39b3a | 169 | |
170 | if(fTRDnSlices){ | |
171 | fTRDslices = new Double32_t[fTRDnSlices]; | |
172 | memcpy(fTRDslices, esd.fTRDslices, fTRDnSlices*sizeof(Double32_t)); | |
173 | } | |
174 | if(esd.fOP) fOP = new AliExternalTrackParam(*esd.fOP); | |
175 | } | |
176 | ||
177 | ||
178 | //___________________________________________________ | |
179 | AliTRDtrackInfo::~AliTRDtrackInfo() | |
180 | { | |
181 | // | |
182 | // Destructor | |
183 | // | |
184 | ||
185 | if(fMC) delete fMC; | |
186 | if(fTRDtrack) delete fTRDtrack; | |
187 | } | |
188 | ||
189 | //___________________________________________________ | |
190 | AliTRDtrackInfo::AliMCinfo::~AliMCinfo() | |
191 | { | |
192 | // | |
193 | // Destructor | |
194 | // | |
195 | ||
196 | fNTrackRefs = 0; | |
197 | for(Int_t ien = 0; ien < 12; ien++){ | |
198 | if(fTrackRefs[ien]) delete fTrackRefs[ien]; | |
f232df0d | 199 | fTrackRefs[ien] = NULL; |
1ee39b3a | 200 | } |
201 | } | |
202 | ||
203 | //___________________________________________________ | |
204 | AliTRDtrackInfo::AliESDinfo::~AliESDinfo() | |
205 | { | |
206 | // | |
207 | // Destructor | |
208 | // | |
209 | ||
210 | if(fTRDnSlices){ | |
211 | delete [] fTRDslices; | |
f232df0d | 212 | fTRDslices = NULL; |
1ee39b3a | 213 | fTRDnSlices = 0; |
214 | } | |
f232df0d | 215 | if(fOP) delete fOP; fOP = NULL; |
1ee39b3a | 216 | } |
217 | ||
8778aca3 | 218 | //___________________________________________________ |
219 | void AliTRDtrackInfo::AliESDinfo::Delete(const Option_t *){ | |
220 | // | |
221 | // Delete Pointer members | |
222 | // | |
223 | if(fTRDnSlices){ | |
224 | delete [] fTRDslices; | |
225 | fTRDslices = NULL; | |
226 | fTRDnSlices = 0; | |
227 | } | |
228 | if(fOP) delete fOP; fOP = NULL; | |
229 | } | |
230 | ||
1ee39b3a | 231 | |
232 | //___________________________________________________ | |
233 | AliTRDtrackInfo& AliTRDtrackInfo::operator=(const AliTRDtrackInfo &trdInfo) | |
234 | { | |
235 | // | |
236 | // = Operator | |
237 | // | |
238 | ||
239 | fNClusters = trdInfo.fNClusters; | |
240 | fESD = trdInfo.fESD; | |
241 | ||
242 | if(trdInfo.fMC){ | |
2c33fb46 | 243 | if(!fMC) fMC = new AliMCinfo(*trdInfo.fMC); |
244 | else{ | |
245 | fMC->~AliMCinfo(); | |
1ee39b3a | 246 | new(fMC) AliMCinfo(*trdInfo.fMC); |
2c33fb46 | 247 | } |
1ee39b3a | 248 | } |
249 | ||
250 | if(trdInfo.fTRDtrack){ | |
2c33fb46 | 251 | if(!fTRDtrack) fTRDtrack = new AliTRDtrackV1(*trdInfo.fTRDtrack); |
252 | else{ | |
253 | fTRDtrack->~AliTRDtrackV1(); | |
1ee39b3a | 254 | new(fTRDtrack) AliTRDtrackV1(*trdInfo.fTRDtrack); |
2c33fb46 | 255 | } |
1ee39b3a | 256 | if(trdInfo.fTRDtrack->IsOwner()) fTRDtrack->SetOwner(); |
257 | } | |
258 | ||
259 | return *this; | |
260 | } | |
261 | ||
262 | //___________________________________________________ | |
263 | AliTRDtrackInfo::AliMCinfo& AliTRDtrackInfo::AliMCinfo::operator=(const AliMCinfo &mc) | |
264 | { | |
265 | // | |
266 | // Assignment operator | |
267 | // | |
268 | ||
269 | fLabel = mc.fLabel; | |
270 | fPDG = mc.fPDG; | |
271 | fNTrackRefs = mc.fNTrackRefs; | |
272 | ||
273 | AliTrackReference **itr = &fTrackRefs[0]; | |
274 | AliTrackReference* const *jtr = &mc.fTrackRefs[0]; | |
275 | for(Int_t ien = 0; ien < 12; ien++, itr++, jtr++){ | |
276 | if((*jtr)){ | |
277 | if(!(*itr)) (*itr) = new AliTrackReference(*(*jtr)); | |
2c33fb46 | 278 | else{ |
279 | (*itr)->~AliTrackReference(); | |
280 | new(&(*itr)) AliTrackReference(*(*jtr)); | |
281 | } | |
f232df0d | 282 | } else (*itr) = NULL; |
1ee39b3a | 283 | } |
284 | return *this; | |
285 | } | |
286 | ||
287 | //___________________________________________________ | |
288 | AliTRDtrackInfo::AliESDinfo& AliTRDtrackInfo::AliESDinfo::operator=(const AliESDinfo &esd) | |
289 | { | |
290 | // | |
291 | // Assignment operator | |
292 | // | |
293 | ||
294 | fId = esd.fId; | |
295 | fStatus = esd.fStatus; | |
296 | fTRDpidQuality = esd.fTRDpidQuality; | |
297 | fTRDnSlices = esd.fTRDnSlices; | |
f232df0d | 298 | fTRDslices = NULL; |
1ee39b3a | 299 | |
300 | memcpy(fTRDr, esd.fTRDr, AliPID::kSPECIES*sizeof(Double32_t)); | |
301 | ||
302 | if(fTRDnSlices){ | |
303 | fTRDslices = new Double32_t[fTRDnSlices]; | |
304 | memcpy(fTRDslices, esd.fTRDslices, fTRDnSlices*sizeof(Double32_t)); | |
305 | } | |
306 | if(esd.fOP){ | |
2c33fb46 | 307 | if(fOP){ |
308 | fOP->~AliExternalTrackParam(); | |
4ec1ca0f | 309 | // RS: Constructor from VTrack was used instead of Constructor from AliExternalTrackParam |
310 | new(fOP) AliExternalTrackParam(*esd.fOP); | |
311 | } else fOP = new AliExternalTrackParam(*esd.fOP); | |
f232df0d | 312 | } else fOP = NULL; |
1ee39b3a | 313 | |
314 | return *this; | |
315 | } | |
316 | ||
317 | //___________________________________________________ | |
318 | void AliTRDtrackInfo::Delete(const Option_t *) | |
319 | { | |
320 | // | |
321 | // Delete | |
322 | // | |
323 | ||
2c33fb46 | 324 | AliDebug(2, Form("track[%p] mc[%p]", (void*)fTRDtrack, (void*)fMC)); |
1ee39b3a | 325 | fNClusters = 0; |
f232df0d | 326 | if(fMC) delete fMC; fMC = NULL; |
8778aca3 | 327 | fESD.Delete(NULL); |
f232df0d | 328 | if(fTRDtrack) delete fTRDtrack; fTRDtrack = NULL; |
1ee39b3a | 329 | } |
330 | ||
331 | //___________________________________________________ | |
332 | void AliTRDtrackInfo::SetTrack(const AliTRDtrackV1 *track) | |
333 | { | |
334 | // | |
335 | // Set the TRD track | |
336 | // | |
337 | ||
2c33fb46 | 338 | if(!fTRDtrack) fTRDtrack = new AliTRDtrackV1(*track); |
339 | else{ | |
340 | fTRDtrack->~AliTRDtrackV1(); | |
341 | new(fTRDtrack) AliTRDtrackV1(*track); | |
342 | } | |
1ee39b3a | 343 | fTRDtrack->SetOwner(); |
344 | // Make a copy for the object in order to avoid ownership problems | |
345 | } | |
346 | ||
347 | //___________________________________________________ | |
348 | void AliTRDtrackInfo::AddTrackRef(const AliTrackReference *tref) | |
349 | { | |
350 | // | |
351 | // Add track reference | |
352 | // | |
353 | ||
1ee39b3a | 354 | if(fMC->fNTrackRefs >= 12){ |
355 | SetCurved(); | |
356 | return; | |
357 | } | |
358 | // Make a copy for the object in order to avoid ownership problems | |
359 | fMC->fTrackRefs[fMC->fNTrackRefs++] = new AliTrackReference(*tref); | |
360 | } | |
361 | ||
362 | //___________________________________________________ | |
363 | AliTrackReference* AliTRDtrackInfo::GetTrackRef(Int_t idx) const | |
364 | { | |
365 | // | |
366 | // Returns a track reference | |
367 | // | |
f232df0d | 368 | if(!fMC) return NULL; |
369 | return (idx>=0 && idx < 12) ? fMC->fTrackRefs[idx] : NULL; | |
1ee39b3a | 370 | } |
371 | ||
372 | //___________________________________________________ | |
61f6b45e | 373 | AliTrackReference* AliTRDtrackInfo::GetTrackRef(const AliTRDseedV1* const tracklet) const |
1ee39b3a | 374 | { |
375 | // | |
376 | // Returns a track reference | |
377 | // | |
f232df0d | 378 | if(!fMC) return NULL; |
1ee39b3a | 379 | Double_t cw = AliTRDgeometry::CamHght() + AliTRDgeometry::CdrHght(); |
380 | AliTrackReference * const* jtr = &(fMC->fTrackRefs[0]); | |
381 | for(Int_t itr = 0; itr < fMC->fNTrackRefs; itr++, ++jtr){ | |
382 | if(!(*jtr)) break; | |
383 | if(TMath::Abs(tracklet->GetX0() - (*jtr)->LocalX()) < cw) return (*jtr); | |
384 | } | |
f232df0d | 385 | return NULL; |
1ee39b3a | 386 | } |
387 | ||
388 | //___________________________________________________ | |
389 | Int_t AliTRDtrackInfo::GetNumberOfClusters() const | |
390 | { | |
391 | // | |
392 | // Returns the number of clusters | |
393 | // | |
394 | ||
395 | Int_t n = 0; | |
396 | if(!fTRDtrack) return 0; | |
397 | if(fTRDtrack->GetNumberOfTracklets() == 0) return n; | |
f232df0d | 398 | AliTRDseedV1 *tracklet = NULL; |
1ee39b3a | 399 | for(Int_t ip=0; ip<6; ip++){ |
400 | if(!(tracklet = const_cast<AliTRDseedV1 *>(fTRDtrack->GetTracklet(ip)))) continue; | |
401 | n+=tracklet->GetN(); | |
402 | } | |
403 | return n; | |
404 | } | |
405 | ||
406 | ||
407 | //___________________________________________________ | |
408 | void AliTRDtrackInfo::SetOuterParam(const AliExternalTrackParam *op) | |
409 | { | |
410 | // | |
411 | // Set outer track parameters | |
412 | // | |
413 | ||
414 | if(!op) return; | |
2c33fb46 | 415 | if(fESD.fOP){ |
416 | fESD.fOP->~AliExternalTrackParam(); | |
417 | new(fESD.fOP) AliExternalTrackParam(*op); | |
418 | } else fESD.fOP = new AliExternalTrackParam(*op); | |
1ee39b3a | 419 | } |
420 | ||
421 | //___________________________________________________ | |
422 | Int_t AliTRDtrackInfo::GetNTracklets() const | |
423 | { | |
424 | // | |
425 | // Return the number of tracklets | |
426 | // | |
427 | ||
e2927481 | 428 | if(!fTRDtrack) return 0; |
1ee39b3a | 429 | return fTRDtrack->GetNumberOfTracklets(); |
430 | } | |
431 | ||
432 | //___________________________________________________ | |
433 | void AliTRDtrackInfo::SetSlices(Int_t n, Double32_t *s) | |
434 | { | |
435 | // | |
436 | // Set the slices | |
437 | // | |
1ee39b3a | 438 | if(fESD.fTRDnSlices != n){ |
439 | fESD.fTRDnSlices = 0; | |
440 | delete [] fESD.fTRDslices; | |
f232df0d | 441 | fESD.fTRDslices = NULL; |
1ee39b3a | 442 | } |
443 | ||
444 | if(!fESD.fTRDnSlices){ | |
445 | fESD.fTRDnSlices = n; | |
f232df0d | 446 | fESD.fTRDslices = new Double32_t[fESD.fTRDnSlices]; |
1ee39b3a | 447 | } |
448 | ||
449 | memcpy(fESD.fTRDslices, s, n*sizeof(Double32_t)); | |
450 | } | |
451 | ||
452 | //___________________________________________________ | |
f429b017 | 453 | Bool_t AliTRDtrackInfo::AliMCinfo::GetDirections(Float_t &x0, Float_t &y0, Float_t &z0, Float_t &dydx, Float_t &dzdx, Float_t &pt, Float_t &eta, Float_t &phi, UChar_t &status) const |
1ee39b3a | 454 | { |
455 | // Check for 2 track ref for the tracklet defined bythe radial position x0 | |
456 | // The "status" is a bit map and gives a more informative output in case of failure: | |
457 | // - 0 : everything is OK | |
458 | // - BIT(0) : 0 track refs found | |
459 | // - BIT(1) : 1 track reference found | |
460 | // - BIT(2) : dx <= 0 between track references | |
461 | // - BIT(3) : dx > 0 && dx < 3.7 - tangent tracks | |
462 | ||
463 | status = 0; | |
464 | Double_t cw = AliTRDgeometry::CamHght() + AliTRDgeometry::CdrHght(); | |
465 | Int_t nFound = 0; | |
f232df0d | 466 | AliTrackReference *tr[2] = {NULL, NULL}; |
1ee39b3a | 467 | AliTrackReference * const* jtr = &fTrackRefs[0]; |
468 | for(Int_t itr = 0; itr < fNTrackRefs; itr++, ++jtr){ | |
469 | if(!(*jtr)) break; | |
470 | /* | |
471 | if(fDebugLevel>=5) printf("\t\tref[%2d] x[%6.3f]\n", itr, (*jtr)->LocalX());*/ | |
472 | if(TMath::Abs(x0 - (*jtr)->LocalX()) > cw) continue; | |
473 | tr[nFound++] = (*jtr); | |
474 | if(nFound == 2) break; | |
475 | } | |
476 | if(nFound < 2){ | |
f429b017 | 477 | AliDebugGeneral("AliTRDtrackInfo::AliMCinfo::GetDirections()", 1, Form("Missing track ref x0[%6.3f] nref[%d]", x0, nFound)); |
1ee39b3a | 478 | if(!nFound) SETBIT(status, 0); |
479 | else SETBIT(status, 1); | |
480 | return kFALSE; | |
481 | } | |
61f6b45e | 482 | pt=tr[1]->Pt(); |
483 | if(pt < 1.e-3) return kFALSE; | |
1ee39b3a | 484 | |
485 | Double_t dx = tr[1]->LocalX() - tr[0]->LocalX(); | |
486 | if(dx <= 0.){ | |
487 | AliWarningGeneral("AliTRDtrackInfo::AliMCinfo::GetDirections()", Form("Track ref with wrong radial distances refX0[%6.3f] refX1[%6.3f]", tr[0]->LocalX(), tr[1]->LocalX())); | |
488 | SETBIT(status, 2); | |
489 | return kFALSE; | |
490 | } | |
491 | if(TMath::Abs(dx-AliTRDgeometry::CamHght()-AliTRDgeometry::CdrHght())>1.E-3) SETBIT(status, 3); | |
492 | ||
493 | dydx = (tr[1]->LocalY() - tr[0]->LocalY()) / dx; | |
494 | dzdx = (tr[1]->Z() - tr[0]->Z()) / dx; | |
495 | //Float_t dx0 = tr[1]->LocalX() - x0; | |
496 | y0 = tr[1]->LocalY()/* - dydx*dx0*/; | |
497 | z0 = tr[1]->Z()/* - dzdx*dx0*/; | |
498 | x0 = tr[1]->LocalX(); | |
3ceb45ae | 499 | eta = -TMath::Log(TMath::Tan(0.5 * tr[1]->Theta())); |
f429b017 | 500 | phi = tr[1]->PhiPos(); |
1ee39b3a | 501 | return kTRUE; |
502 | } | |
503 | ||
504 | //___________________________________________________ | |
3ceb45ae | 505 | Bool_t AliTRDtrackInfo::AliMCinfo::PropagateKalman( |
506 | TVectorD *x, TVectorD *y, TVectorD *z, | |
507 | TVectorD *dx, TVectorD *dy, TVectorD *dz, | |
508 | TVectorD *pt, TVectorD *dpt, TVectorD *budget, TVectorD *c, Double_t mass) const | |
1ee39b3a | 509 | { |
510 | // Propagate Kalman from the first TRD track reference to | |
511 | // last one and save residuals in the y, z and pt. | |
512 | // | |
513 | // This is to calibrate the dEdx and MS corrections | |
514 | ||
3ceb45ae | 515 | if(!fNTrackRefs) return kFALSE; |
1ee39b3a | 516 | for(Int_t itr=kNTrackRefs; itr--;){ |
3ceb45ae | 517 | (*x)[itr] = 0.;(*y)[itr] = 0.;(*z)[itr] = 0.; |
4226db3e | 518 | (*dx)[itr] = -1.; (*dy)[itr] = 100.; (*dz)[itr] = 100.; (*dpt)[itr] = 100.; |
1ee39b3a | 519 | } |
1ee39b3a | 520 | |
521 | // Initialize TRD track to the first track reference | |
4226db3e | 522 | AliTrackReference *tr(NULL); |
523 | Int_t itr(0); while(!(tr = fTrackRefs[itr])) itr++; | |
3ceb45ae | 524 | if(tr->Pt()<1.e-3) return kFALSE; |
1ee39b3a | 525 | |
526 | AliTRDtrackV1 tt; | |
527 | Double_t xyz[3]={tr->X(),tr->Y(),tr->Z()}; | |
528 | Double_t pxyz[3]={tr->Px(),tr->Py(),tr->Pz()}; | |
529 | Double_t var[6] = {1.e-4, 1.e-4, 1.e-4, 1.e-4, 1.e-4, 1.e-4}; | |
530 | Double_t cov[21]={ | |
531 | var[0], 0., 0., 0., 0., 0., | |
532 | var[1], 0., 0., 0., 0., | |
533 | var[2], 0., 0., 0., | |
534 | var[3], 0., 0., | |
535 | var[4], 0., | |
536 | var[5] | |
537 | }; | |
538 | TDatabasePDG db; | |
539 | const TParticlePDG *pdg=db.GetParticle(fPDG); | |
540 | if(!pdg){ | |
541 | AliWarningGeneral("AliTRDtrackInfo::AliMCinfo::PropagateKalman()", Form("PDG entry missing for code %d. References for track %d", fPDG, fNTrackRefs)); | |
3ceb45ae | 542 | return kFALSE; |
1ee39b3a | 543 | } |
544 | tt.Set(xyz, pxyz, cov, Short_t(pdg->Charge())); | |
3ceb45ae | 545 | if(mass<0){ // mass 0 use PDG |
546 | tt.SetMass(pdg->Mass()); | |
547 | } else { // use rec value | |
548 | tt.SetMass(mass); | |
549 | } | |
550 | ||
551 | // Double_t bg(tr->P()/pdg->Mass()); | |
552 | // printf("\n\nNEW track PDG[%d] bg[%f] x[%f]\n", fPDG, bg, TMath::Log(bg)); | |
4226db3e | 553 | Double_t x0(tr->LocalX()); |
554 | const Double_t *cc(NULL); | |
555 | for(Int_t ip=0; itr<fNTrackRefs; itr++){ | |
556 | if(!(tr = fTrackRefs[itr])) continue; | |
3ceb45ae | 557 | // printf("ip[%d] det[%d]\n", ip, tr->DetectorId()); |
5066aa9a | 558 | if(!AliTRDtrackerV1::PropagateToX(tt, tr->LocalX(), fgKalmanStep)) continue; |
1ee39b3a | 559 | |
560 | //if(update) ... | |
3ceb45ae | 561 | tt.GetXYZ(xyz); |
562 | (*x)[ip] = xyz[0]; | |
563 | (*y)[ip] = xyz[1]; | |
564 | (*z)[ip] = xyz[2]; | |
4226db3e | 565 | (*dx)[ip] = tt.GetX() - x0; |
566 | (*dy)[ip] = tt.GetY() - tr->LocalY(); | |
567 | (*dz)[ip] = tt.GetZ() - tr->Z(); | |
5066aa9a | 568 | (*pt)[ip] = tr->Pt(); |
4226db3e | 569 | (*dpt)[ip] = tt.Pt()- tr->Pt(); |
3ceb45ae | 570 | // printf("pt : kalman[%e] MC[%e]\n", tt.Pt(), tr->Pt()); |
571 | (*budget)[ip] = tt.GetBudget(0); | |
1ee39b3a | 572 | cc = tt.GetCovariance(); |
3ceb45ae | 573 | // printf("dx[%5.2f] sy[%f]\n", (*dx)[ip], TMath::Sqrt(cc[0])); |
574 | for(Int_t ic(0), jp(ip*15); ic<15; ic++, jp++) (*c)[jp]=cc[ic]; | |
1ee39b3a | 575 | ip++; |
576 | } | |
3ceb45ae | 577 | return kTRUE; |
1ee39b3a | 578 | } |