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df9db588 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, 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 | /* $Id$ */ | |
17 | ||
18 | //------------------------------------------------------------------------- | |
0c5f89fb | 19 | // AOD track implementation of AliVParticle |
df9db588 | 20 | // Author: Markus Oldenburg, CERN |
0c5f89fb | 21 | // Markus.Oldenburg@cern.ch |
df9db588 | 22 | //------------------------------------------------------------------------- |
23 | ||
24 | #include "AliAODTrack.h" | |
25 | ||
9861edc0 | 26 | //#include <TPDGCode.h> |
27 | //#include <TDatabasePDG.h> | |
28 | ||
df9db588 | 29 | ClassImp(AliAODTrack) |
30 | ||
31 | //______________________________________________________________________________ | |
32 | AliAODTrack::AliAODTrack() : | |
9861edc0 | 33 | AliVParticle(), |
1912763f | 34 | fChi2perNDF(-999.), |
9333290e | 35 | fChi2MatchTrigger(0.), |
6efb741f | 36 | fFlags(0), |
df9db588 | 37 | fLabel(-999), |
1912763f | 38 | fITSMuonClusterMap(0), |
9333290e | 39 | fFilterMap(0), |
02153d58 | 40 | fID(-999), |
9333290e | 41 | fCharge(-99), |
e1c744ca | 42 | fType(kUndef), |
9333290e | 43 | fCovMatrix(NULL), |
7be1db84 | 44 | fDetPid(NULL), |
45 | fProdVertex(NULL) | |
df9db588 | 46 | { |
47 | // default constructor | |
48 | ||
49 | SetP(); | |
50 | SetPosition((Float_t*)NULL); | |
51 | SetPID((Float_t*)NULL); | |
52 | } | |
53 | ||
54 | //______________________________________________________________________________ | |
02153d58 | 55 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 56 | Int_t label, |
57 | Double_t p[3], | |
58 | Bool_t cartesian, | |
59 | Double_t x[3], | |
60 | Bool_t isDCA, | |
61 | Double_t covMatrix[21], | |
62 | Short_t charge, | |
63 | UChar_t itsClusMap, | |
64 | Double_t pid[10], | |
65 | AliAODVertex *prodVertex, | |
1912763f | 66 | Bool_t usedForVtxFit, |
dc825b15 | 67 | Bool_t usedForPrimVtxFit, |
ec40c484 | 68 | AODTrk_t ttype, |
69 | UInt_t selectInfo) : | |
9861edc0 | 70 | AliVParticle(), |
1912763f | 71 | fChi2perNDF(-999.), |
9333290e | 72 | fChi2MatchTrigger(0.), |
6efb741f | 73 | fFlags(0), |
df9db588 | 74 | fLabel(label), |
1912763f | 75 | fITSMuonClusterMap(itsClusMap), |
9333290e | 76 | fFilterMap(selectInfo), |
02153d58 | 77 | fID(id), |
9333290e | 78 | fCharge(charge), |
e1c744ca | 79 | fType(ttype), |
9333290e | 80 | fCovMatrix(NULL), |
7be1db84 | 81 | fDetPid(NULL), |
9333290e | 82 | fProdVertex(prodVertex) |
df9db588 | 83 | { |
84 | // constructor | |
85 | ||
86 | SetP(p, cartesian); | |
87 | SetPosition(x, isDCA); | |
1912763f | 88 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 89 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 90 | if(covMatrix) SetCovMatrix(covMatrix); |
91 | SetPID(pid); | |
92 | ||
93 | } | |
94 | ||
95 | //______________________________________________________________________________ | |
02153d58 | 96 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 97 | Int_t label, |
98 | Float_t p[3], | |
99 | Bool_t cartesian, | |
100 | Float_t x[3], | |
101 | Bool_t isDCA, | |
102 | Float_t covMatrix[21], | |
103 | Short_t charge, | |
104 | UChar_t itsClusMap, | |
105 | Float_t pid[10], | |
106 | AliAODVertex *prodVertex, | |
1912763f | 107 | Bool_t usedForVtxFit, |
dc825b15 | 108 | Bool_t usedForPrimVtxFit, |
ec40c484 | 109 | AODTrk_t ttype, |
110 | UInt_t selectInfo) : | |
9861edc0 | 111 | AliVParticle(), |
1912763f | 112 | fChi2perNDF(-999.), |
9333290e | 113 | fChi2MatchTrigger(0.), |
6efb741f | 114 | fFlags(0), |
df9db588 | 115 | fLabel(label), |
1912763f | 116 | fITSMuonClusterMap(itsClusMap), |
9333290e | 117 | fFilterMap(selectInfo), |
02153d58 | 118 | fID(id), |
9333290e | 119 | fCharge(charge), |
e1c744ca | 120 | fType(ttype), |
9333290e | 121 | fCovMatrix(NULL), |
7be1db84 | 122 | fDetPid(NULL), |
9333290e | 123 | fProdVertex(prodVertex) |
df9db588 | 124 | { |
125 | // constructor | |
126 | ||
127 | SetP(p, cartesian); | |
128 | SetPosition(x, isDCA); | |
1912763f | 129 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 130 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 131 | if(covMatrix) SetCovMatrix(covMatrix); |
132 | SetPID(pid); | |
df9db588 | 133 | } |
134 | ||
df9db588 | 135 | //______________________________________________________________________________ |
136 | AliAODTrack::~AliAODTrack() | |
137 | { | |
138 | // destructor | |
139 | delete fCovMatrix; | |
140 | } | |
141 | ||
142 | ||
143 | //______________________________________________________________________________ | |
144 | AliAODTrack::AliAODTrack(const AliAODTrack& trk) : | |
9861edc0 | 145 | AliVParticle(trk), |
1912763f | 146 | fChi2perNDF(trk.fChi2perNDF), |
9333290e | 147 | fChi2MatchTrigger(trk.fChi2MatchTrigger), |
6efb741f | 148 | fFlags(trk.fFlags), |
df9db588 | 149 | fLabel(trk.fLabel), |
1912763f | 150 | fITSMuonClusterMap(trk.fITSMuonClusterMap), |
9333290e | 151 | fFilterMap(trk.fFilterMap), |
02153d58 | 152 | fID(trk.fID), |
9333290e | 153 | fCharge(trk.fCharge), |
e1c744ca | 154 | fType(trk.fType), |
9333290e | 155 | fCovMatrix(NULL), |
7be1db84 | 156 | fDetPid(NULL), |
9333290e | 157 | fProdVertex(trk.fProdVertex) |
df9db588 | 158 | { |
159 | // Copy constructor | |
160 | ||
161 | trk.GetP(fMomentum); | |
162 | trk.GetPosition(fPosition); | |
1912763f | 163 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 164 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
5d62ce04 | 165 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
7be1db84 | 166 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); |
df9db588 | 167 | SetPID(trk.fPID); |
df9db588 | 168 | } |
169 | ||
170 | //______________________________________________________________________________ | |
171 | AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk) | |
172 | { | |
173 | // Assignment operator | |
174 | if(this!=&trk) { | |
175 | ||
9861edc0 | 176 | AliVParticle::operator=(trk); |
df9db588 | 177 | |
178 | trk.GetP(fMomentum); | |
179 | trk.GetPosition(fPosition); | |
180 | trk.GetPID(fPID); | |
181 | ||
1912763f | 182 | fChi2perNDF = trk.fChi2perNDF; |
9333290e | 183 | fChi2MatchTrigger = trk.fChi2MatchTrigger; |
df9db588 | 184 | |
6efb741f | 185 | fFlags = trk.fFlags; |
df9db588 | 186 | fLabel = trk.fLabel; |
187 | ||
9333290e | 188 | fITSMuonClusterMap = trk.fITSMuonClusterMap; |
189 | fFilterMap = trk.fFilterMap; | |
190 | ||
6efb741f | 191 | fID = trk.fID; |
192 | ||
9333290e | 193 | fCharge = trk.fCharge; |
194 | fType = trk.fType; | |
195 | ||
df9db588 | 196 | delete fCovMatrix; |
5d62ce04 | 197 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
df9db588 | 198 | else fCovMatrix=NULL; |
199 | fProdVertex = trk.fProdVertex; | |
200 | ||
1912763f | 201 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 202 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
7be1db84 | 203 | |
204 | delete fDetPid; | |
205 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); | |
206 | else fDetPid=NULL; | |
df9db588 | 207 | } |
208 | ||
209 | return *this; | |
210 | } | |
211 | ||
4697e4fb | 212 | //______________________________________________________________________________ |
213 | Double_t AliAODTrack::M(AODTrkPID_t pid) const | |
214 | { | |
215 | // Returns the mass. | |
9861edc0 | 216 | // Masses for nuclei don't exist in the PDG tables, therefore they were put by hand. |
4697e4fb | 217 | |
218 | switch (pid) { | |
219 | ||
220 | case kElectron : | |
9861edc0 | 221 | return 0.000510999; //TDatabasePDG::Instance()->GetParticle(11/*::kElectron*/)->Mass(); |
4697e4fb | 222 | break; |
223 | ||
224 | case kMuon : | |
9861edc0 | 225 | return 0.1056584; //TDatabasePDG::Instance()->GetParticle(13/*::kMuonMinus*/)->Mass(); |
4697e4fb | 226 | break; |
227 | ||
228 | case kPion : | |
9861edc0 | 229 | return 0.13957; //TDatabasePDG::Instance()->GetParticle(211/*::kPiPlus*/)->Mass(); |
4697e4fb | 230 | break; |
231 | ||
232 | case kKaon : | |
9861edc0 | 233 | return 0.4937; //TDatabasePDG::Instance()->GetParticle(321/*::kKPlus*/)->Mass(); |
4697e4fb | 234 | break; |
235 | ||
236 | case kProton : | |
9861edc0 | 237 | return 0.9382720; //TDatabasePDG::Instance()->GetParticle(2212/*::kProton*/)->Mass(); |
4697e4fb | 238 | break; |
239 | ||
240 | case kDeuteron : | |
9861edc0 | 241 | return 1.8756; //TDatabasePDG::Instance()->GetParticle(1000010020)->Mass(); |
4697e4fb | 242 | break; |
243 | ||
244 | case kTriton : | |
9861edc0 | 245 | return 2.8089; //TDatabasePDG::Instance()->GetParticle(1000010030)->Mass(); |
4697e4fb | 246 | break; |
247 | ||
248 | case kHelium3 : | |
9861edc0 | 249 | return 2.8084; //TDatabasePDG::Instance()->GetParticle(1000020030)->Mass(); |
4697e4fb | 250 | break; |
251 | ||
252 | case kAlpha : | |
9861edc0 | 253 | return 3.7274; //TDatabasePDG::Instance()->GetParticle(1000020040)->Mass(); |
4697e4fb | 254 | break; |
255 | ||
256 | case kUnknown : | |
257 | return -999.; | |
258 | break; | |
259 | ||
260 | default : | |
261 | return -999.; | |
262 | } | |
263 | } | |
264 | ||
265 | //______________________________________________________________________________ | |
266 | Double_t AliAODTrack::E(AODTrkPID_t pid) const | |
267 | { | |
268 | // Returns the energy of the particle of a given pid. | |
269 | ||
270 | if (pid != kUnknown) { // particle was identified | |
271 | Double_t m = M(pid); | |
272 | return TMath::Sqrt(P()*P() + m*m); | |
273 | } else { // pid unknown | |
274 | return -999.; | |
275 | } | |
276 | } | |
277 | ||
278 | //______________________________________________________________________________ | |
279 | Double_t AliAODTrack::Y(AODTrkPID_t pid) const | |
280 | { | |
9861edc0 | 281 | // Returns the rapidity of a particle of a given pid. |
4697e4fb | 282 | |
283 | if (pid != kUnknown) { // particle was identified | |
284 | Double_t e = E(pid); | |
285 | Double_t pz = Pz(); | |
286 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
287 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
288 | } else { // energy not known or equal to pz | |
289 | return -999.; | |
290 | } | |
291 | } else { // pid unknown | |
292 | return -999.; | |
293 | } | |
294 | } | |
295 | ||
296 | //______________________________________________________________________________ | |
297 | Double_t AliAODTrack::Y(Double_t m) const | |
298 | { | |
9861edc0 | 299 | // Returns the rapidity of a particle of a given mass. |
4697e4fb | 300 | |
301 | if (m >= 0.) { // mass makes sense | |
302 | Double_t e = E(m); | |
303 | Double_t pz = Pz(); | |
304 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
305 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
306 | } else { // energy not known or equal to pz | |
307 | return -999.; | |
308 | } | |
309 | } else { // pid unknown | |
310 | return -999.; | |
311 | } | |
312 | } | |
313 | ||
314 | //______________________________________________________________________________ | |
315 | AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const | |
316 | { | |
317 | // Returns the most probable PID array element. | |
318 | ||
319 | Int_t nPID = 10; | |
320 | if (fPID) { | |
321 | AODTrkPID_t loc = kUnknown; | |
322 | Double_t max = 0.; | |
323 | Bool_t allTheSame = kTRUE; | |
324 | ||
325 | for (Int_t iPID = 0; iPID < nPID; iPID++) { | |
326 | if (fPID[iPID] >= max) { | |
327 | if (fPID[iPID] > max) { | |
328 | allTheSame = kFALSE; | |
329 | max = fPID[iPID]; | |
330 | loc = (AODTrkPID_t)iPID; | |
331 | } else { | |
332 | allTheSame = kTRUE; | |
333 | } | |
334 | } | |
335 | } | |
336 | ||
337 | return allTheSame ? kUnknown : loc; | |
338 | } else { | |
339 | return kUnknown; | |
340 | } | |
341 | } | |
342 | ||
343 | //______________________________________________________________________________ | |
344 | void AliAODTrack::ConvertAliPIDtoAODPID() | |
345 | { | |
346 | // Converts AliPID array. | |
347 | // The numbering scheme is the same for electrons, muons, pions, kaons, and protons. | |
348 | // Everything else has to be set to zero. | |
349 | ||
350 | fPID[kDeuteron] = 0.; | |
8a1418dc | 351 | fPID[kTriton] = 0.; |
352 | fPID[kHelium3] = 0.; | |
353 | fPID[kAlpha] = 0.; | |
354 | fPID[kUnknown] = 0.; | |
4697e4fb | 355 | |
356 | return; | |
357 | } | |
358 | ||
359 | ||
df9db588 | 360 | //______________________________________________________________________________ |
361 | template <class T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian) | |
362 | { | |
8a1418dc | 363 | // Set the momentum |
df9db588 | 364 | |
365 | if (p) { | |
366 | if (cartesian) { | |
16b65f2a | 367 | Double_t pt2 = p[0]*p[0] + p[1]*p[1]; |
0c5f89fb | 368 | Double_t pp = TMath::Sqrt(pt2 + p[2]*p[2]); |
df9db588 | 369 | |
16b65f2a | 370 | fMomentum[0] = TMath::Sqrt(pt2); // pt |
b1a9edc8 | 371 | fMomentum[1] = (pt2 != 0.) ? TMath::Pi()+TMath::ATan2(-p[1], -p[0]) : -999; // phi |
0c5f89fb | 372 | fMomentum[2] = (pp != 0.) ? TMath::ACos(p[2] / pp) : -999.; // theta |
df9db588 | 373 | } else { |
16b65f2a | 374 | fMomentum[0] = p[0]; // pt |
df9db588 | 375 | fMomentum[1] = p[1]; // phi |
376 | fMomentum[2] = p[2]; // theta | |
377 | } | |
378 | } else { | |
379 | fMomentum[0] = -999.; | |
380 | fMomentum[1] = -999.; | |
381 | fMomentum[2] = -999.; | |
382 | } | |
383 | } | |
384 | ||
385 | //______________________________________________________________________________ | |
386 | template <class T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca) | |
387 | { | |
388 | // set the position | |
389 | ||
390 | if (x) { | |
391 | if (!dca) { | |
392 | ResetBit(kIsDCA); | |
393 | ||
394 | fPosition[0] = x[0]; | |
395 | fPosition[1] = x[1]; | |
396 | fPosition[2] = x[2]; | |
397 | } else { | |
398 | SetBit(kIsDCA); | |
399 | // don't know any better yet | |
400 | fPosition[0] = -999.; | |
401 | fPosition[1] = -999.; | |
402 | fPosition[2] = -999.; | |
403 | } | |
404 | } else { | |
405 | ResetBit(kIsDCA); | |
406 | ||
407 | fPosition[0] = -999.; | |
408 | fPosition[1] = -999.; | |
409 | fPosition[2] = -999.; | |
410 | } | |
411 | } | |
412 | ||
413 | //______________________________________________________________________________ | |
414 | void AliAODTrack::SetDCA(Double_t d, Double_t z) | |
415 | { | |
416 | // set the dca | |
417 | fPosition[0] = d; | |
418 | fPosition[1] = z; | |
419 | fPosition[2] = 0.; | |
420 | SetBit(kIsDCA); | |
421 | } | |
422 | ||
423 | //______________________________________________________________________________ | |
424 | void AliAODTrack::Print(Option_t* /* option */) const | |
425 | { | |
426 | // prints information about AliAODTrack | |
427 | ||
428 | printf("Object name: %s Track type: %s\n", GetName(), GetTitle()); | |
429 | printf(" px = %f\n", Px()); | |
430 | printf(" py = %f\n", Py()); | |
431 | printf(" pz = %f\n", Pz()); | |
432 | printf(" pt = %f\n", Pt()); | |
433 | printf(" 1/pt = %f\n", OneOverPt()); | |
434 | printf(" theta = %f\n", Theta()); | |
435 | printf(" phi = %f\n", Phi()); | |
1912763f | 436 | printf(" chi2/NDF = %f\n", Chi2perNDF()); |
df9db588 | 437 | printf(" charge = %d\n", Charge()); |
df9db588 | 438 | } |
439 | ||
e1c744ca | 440 | void AliAODTrack::SetMatchTrigger(Int_t MatchTrigger){ |
8a1418dc | 441 | // |
442 | // Set the MUON trigger information | |
e1c744ca | 443 | switch(MatchTrigger){ |
444 | case 0: // 0 track does not match trigger | |
445 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
446 | break; | |
447 | case 1: // 1 track match but does not pass pt cut | |
448 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x40000000; | |
449 | break; | |
450 | case 2: // 2 track match Low pt cut | |
451 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x80000000; | |
452 | break; | |
453 | case 3: // 3 track match High pt cut | |
454 | fITSMuonClusterMap=fITSMuonClusterMap|0xc0000000; | |
455 | break; | |
456 | default: | |
457 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
458 | printf("AliAODTrack::SetMatchTrigger unknown case for MatchTrigger: %d\n",MatchTrigger); | |
459 | } | |
460 | } | |
461 | ||
462 | void AliAODTrack::SetHitsPatternInTrigCh(UShort_t hitsPatternInTrigCh){ | |
8a1418dc | 463 | // |
464 | // Set the MUON hit pattern (1 bit per chamber) | |
e1c744ca | 465 | fITSMuonClusterMap=(fITSMuonClusterMap&0xffff00ff)|(hitsPatternInTrigCh<<8); |
466 | } | |
467 | ||
468 | Int_t AliAODTrack::HitsMT(Int_t istation, Int_t iplane, Char_t *cathode){ | |
8a1418dc | 469 | // |
470 | // Retrieve hit information for MUON identified by (station, plane, cathode) | |
e1c744ca | 471 | if(cathode){ |
472 | if(cathode[0]=='x'||cathode[0]=='X'){ | |
473 | if(istation==1){ | |
474 | if(iplane==1) | |
475 | return (fITSMuonClusterMap&0x8000)?1:0; | |
476 | else if(iplane==2) | |
477 | return (fITSMuonClusterMap&0x4000)?1:0; | |
478 | else | |
479 | return 0; | |
480 | }else if(istation==2){ | |
481 | if(iplane==1) | |
482 | return (fITSMuonClusterMap&0x2000)?1:0; | |
483 | else if(iplane==2) | |
484 | return (fITSMuonClusterMap&0x1000)?1:0; | |
485 | else | |
486 | return 0; | |
487 | }else{ | |
488 | return 0; | |
489 | } | |
490 | }else if(cathode[0]=='y'||cathode[0]=='Y'){ | |
491 | if(istation==1){ | |
492 | if(iplane==1) | |
493 | return (fITSMuonClusterMap&0x0800)?1:0; | |
494 | else if(iplane==2) | |
495 | return (fITSMuonClusterMap&0x0400)?1:0; | |
496 | else | |
497 | return 0; | |
498 | }else if(istation==2){ | |
499 | if(iplane==1) | |
500 | return (fITSMuonClusterMap&0x0200)?1:0; | |
501 | else if(iplane==2) | |
502 | return (fITSMuonClusterMap&0x0100)?1:0; | |
503 | else | |
504 | return 0; | |
505 | }else{ | |
506 | return 0; | |
507 | } | |
508 | }else{ | |
509 | return 0; | |
510 | } | |
511 | }else{ | |
512 | if(istation==1){ | |
513 | if(iplane==1) | |
514 | return (HitsMT(1,1,"X")||HitsMT(1,1,"Y"))?1:0; | |
515 | else if(iplane==2) | |
516 | return (HitsMT(1,2,"X")||HitsMT(1,2,"Y"))?1:0; | |
517 | else | |
518 | return 0; | |
519 | }else if(istation==2){ | |
520 | if(iplane==1) | |
521 | return (HitsMT(2,1,"X")||HitsMT(2,1,"Y"))?1:0; | |
522 | else if(iplane==2) | |
523 | return (HitsMT(2,2,"X")||HitsMT(2,2,"Y"))?1:0; | |
524 | else | |
525 | return 0; | |
526 | }else{ | |
527 | return 0; | |
528 | } | |
529 | } | |
530 | } | |
531 | ||
532 | Int_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber){ | |
8a1418dc | 533 | // Retrieve hit information for MUON Chamber |
e1c744ca | 534 | switch(MuonChamber){ |
535 | case 11: | |
536 | return HitsMT(1,1); | |
537 | case 12: | |
538 | return HitsMT(1,2); | |
539 | case 13: | |
540 | return HitsMT(2,1); | |
541 | case 14: | |
542 | return HitsMT(2,2); | |
543 | default: | |
544 | printf("Unknown MUON chamber: %d\n",MuonChamber); | |
545 | return 0; | |
546 | } | |
547 | } | |
c683ddc2 | 548 | |
549 | ||
550 | ||
551 | Bool_t AliAODTrack::PropagateTo(Double_t xk, Double_t b) { | |
552 | //---------------------------------------------------------------- | |
553 | // Propagate this track to the plane X=xk (cm) in the field "b" (kG) | |
554 | // This is in local coordinates!!! | |
555 | //---------------------------------------------------------------- | |
556 | ||
557 | Double_t alpha = 0.; | |
558 | Double_t localP[3] = {Px(), Py(), Pz()}; // set global (sic!) p | |
559 | Global2LocalMomentum(localP, Charge(), alpha); // convert global to local momentum | |
560 | ||
561 | AliAODVertex *origin = (AliAODVertex*)fProdVertex.GetObject(); | |
562 | Double_t localX[3] = {origin->GetX(), origin->GetY(), origin->GetZ()}; // set global (sic!) location of first track point | |
563 | Global2LocalPosition(localX, alpha); // convert global to local position | |
564 | ||
565 | Double_t &fX = localX[0]; | |
566 | ||
567 | Double_t dx=xk-fX; | |
568 | if (TMath::Abs(dx)<=kAlmost0) return kTRUE; | |
569 | ||
570 | Double_t crv=localP[0]*b*kB2C; | |
571 | if (TMath::Abs(b) < kAlmost0Field) crv=0.; | |
572 | ||
573 | Double_t f1=localP[1], f2=f1 + crv*dx; | |
574 | if (TMath::Abs(f1) >= kAlmost1) return kFALSE; | |
575 | if (TMath::Abs(f2) >= kAlmost1) return kFALSE; | |
576 | ||
577 | Double_t &fP0=localX[1], &fP1=localX[2], &fP2=localP[0], &fP3=localP[1], &fP4=localP[2]; | |
578 | /* covariance matrix to be fixed! | |
579 | Double_t | |
580 | &fC00=fC[0], | |
581 | &fC10=fC[1], &fC11=fC[2], | |
582 | &fC20=fC[3], &fC21=fC[4], &fC22=fC[5], | |
583 | &fC30=fC[6], &fC31=fC[7], &fC32=fC[8], &fC33=fC[9], | |
584 | &fC40=fC[10], &fC41=fC[11], &fC42=fC[12], &fC43=fC[13], &fC44=fC[14]; | |
585 | */ | |
586 | Double_t r1=TMath::Sqrt(1.- f1*f1), r2=TMath::Sqrt(1.- f2*f2); | |
587 | ||
588 | fX=xk; | |
589 | fP0 += dx*(f1+f2)/(r1+r2); | |
590 | fP1 += dx*(r2 + f2*(f1+f2)/(r1+r2))*fP3; | |
591 | fP2 += dx*crv; | |
592 | ||
593 | //f = F - 1 | |
594 | ||
d067f357 | 595 | //Double_t f02= dx/(r1*r1*r1); |
596 | Double_t cc=crv/fP4; | |
c683ddc2 | 597 | Double_t f04=0.5*dx*dx/(r1*r1*r1); f04*=cc; |
d067f357 | 598 | //Double_t f12= dx*fP3*f1/(r1*r1*r1); |
c683ddc2 | 599 | Double_t f14=0.5*dx*dx*fP3*f1/(r1*r1*r1); f14*=cc; |
d067f357 | 600 | //Double_t f13= dx/r1; |
c683ddc2 | 601 | Double_t f24= dx; f24*=cc; |
602 | ||
603 | /* covariance matrix to be fixed! | |
604 | //b = C*ft | |
605 | Double_t b00=f02*fC20 + f04*fC40, b01=f12*fC20 + f14*fC40 + f13*fC30; | |
606 | Double_t b02=f24*fC40; | |
607 | Double_t b10=f02*fC21 + f04*fC41, b11=f12*fC21 + f14*fC41 + f13*fC31; | |
608 | Double_t b12=f24*fC41; | |
609 | Double_t b20=f02*fC22 + f04*fC42, b21=f12*fC22 + f14*fC42 + f13*fC32; | |
610 | Double_t b22=f24*fC42; | |
611 | Double_t b40=f02*fC42 + f04*fC44, b41=f12*fC42 + f14*fC44 + f13*fC43; | |
612 | Double_t b42=f24*fC44; | |
613 | Double_t b30=f02*fC32 + f04*fC43, b31=f12*fC32 + f14*fC43 + f13*fC33; | |
614 | Double_t b32=f24*fC43; | |
615 | ||
616 | //a = f*b = f*C*ft | |
617 | Double_t a00=f02*b20+f04*b40,a01=f02*b21+f04*b41,a02=f02*b22+f04*b42; | |
618 | Double_t a11=f12*b21+f14*b41+f13*b31,a12=f12*b22+f14*b42+f13*b32; | |
619 | Double_t a22=f24*b42; | |
620 | ||
621 | //F*C*Ft = C + (b + bt + a) | |
622 | fC00 += b00 + b00 + a00; | |
623 | fC10 += b10 + b01 + a01; | |
624 | fC20 += b20 + b02 + a02; | |
625 | fC30 += b30; | |
626 | fC40 += b40; | |
627 | fC11 += b11 + b11 + a11; | |
628 | fC21 += b21 + b12 + a12; | |
629 | fC31 += b31; | |
630 | fC41 += b41; | |
631 | fC22 += b22 + b22 + a22; | |
632 | fC32 += b32; | |
633 | fC42 += b42; | |
634 | */ | |
635 | ||
636 | Local2GlobalMomentum(localP, alpha); // convert local to global momentum | |
637 | SetP(localP); | |
638 | ||
639 | return kTRUE; | |
640 | } |