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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 | // Implementation of the ESD track class | |
17 | // ESD = Event Summary Data | |
18 | // This is the class to deal with during the phisics analysis of data | |
19 | // Origin: Iouri Belikov, CERN | |
20 | // e-mail: Jouri.Belikov@cern.ch | |
21 | // | |
22 | // | |
23 | // | |
24 | // What do you need to know before starting analysis | |
25 | // (by Marian Ivanov: marian.ivanov@cern.ch) | |
26 | // | |
27 | // | |
28 | // AliESDtrack: | |
29 | // 1. What is the AliESDtrack | |
30 | // 2. What informations do we store | |
31 | // 3. How to use the information for analysis | |
32 | // | |
33 | // | |
34 | // 1.AliESDtrack is the container of the information about the track/particle | |
35 | // reconstructed during Barrel Tracking. | |
36 | // The track information is propagated from one tracking detector to | |
37 | // other using the functionality of AliESDtrack - Current parameters. | |
38 | // | |
39 | // No global fit model is used. | |
40 | // Barrel tracking use Kalman filtering technique, it gives optimal local | |
41 | // track parameters at given point under certian assumptions. | |
42 | // | |
43 | // Kalman filter take into account additional effect which are | |
44 | // difficult to handle using global fit. | |
45 | // Effects: | |
46 | // a.) Multiple scattering | |
47 | // b.) Energy loss | |
48 | // c.) Non homogenous magnetic field | |
49 | // | |
50 | // In general case, following barrel detectors are contributing to | |
51 | // the Kalman track information: | |
52 | // a. TPC | |
53 | // b. ITS | |
54 | // c. TRD | |
55 | // | |
56 | // In general 3 reconstruction itteration are performed: | |
57 | // 1. Find tracks - sequence TPC->ITS | |
58 | // 2. PropagateBack - sequence ITS->TPC->TRD -> Outer PID detectors | |
59 | // 3. Refit invward - sequence TRD->TPC->ITS | |
60 | // The current tracks are updated after each detector (see bellow). | |
61 | // In specical cases a track sanpshots are stored. | |
62 | // | |
63 | // | |
64 | // For some type of analysis (+visualization) track local parameters at | |
65 | // different position are neccesary. A snapshots during the track | |
66 | // propagation are created. | |
67 | // (See AliExternalTrackParam class for desctiption of variables and | |
68 | // functionality) | |
69 | // Snapshots: | |
70 | // a. Current parameters - class itself (AliExternalTrackParam) | |
71 | // Contributors: general case TRD->TPC->ITS | |
72 | // Preferable usage: Decission - primary or secondary track | |
73 | // NOTICE - By default the track parameters are stored at the DCA point | |
74 | // to the primary vertex. optimal for primary tracks, | |
75 | // far from optimal for secondary tracks. | |
76 | // b. Constrained parameters - Kalman information updated with | |
77 | // the Primary vertex information | |
78 | // Contributors: general case TRD->TPC->ITS | |
79 | // Preferable usage: Use only for tracks selected as primary | |
80 | // NOTICE - not real constrain - taken as additional measurement | |
81 | // with corresponding error | |
82 | // Function: | |
83 | // const AliExternalTrackParam *GetConstrainedParam() const {return fCp;} | |
84 | // c. Inner parameters - Track parameters at inner wall of the TPC | |
85 | // Contributors: general case TRD->TPC | |
86 | // function: | |
87 | // const AliExternalTrackParam *GetInnerParam() const { return fIp;} | |
88 | // | |
89 | // d. TPCinnerparam - contributors - TPC only | |
90 | // Contributors: TPC | |
91 | // Preferable usage: Requested for HBT study | |
92 | // (smaller correlations as using also ITS information) | |
93 | // NOTICE - the track parameters are propagated to the DCA to | |
94 | // to primary vertex | |
95 | // Optimal for primary, far from optimal for secondary tracks | |
96 | // Function: | |
97 | // const AliExternalTrackParam *GetTPCInnerParam() const {return fTPCInner;} | |
98 | // | |
99 | // e. Outer parameters - | |
100 | // Contributors- general case - ITS-> TPC -> TRD | |
101 | // The last point - Outer parameters radius is determined | |
102 | // e.a) Local inclination angle bigger than threshold - | |
103 | // Low momenta tracks | |
104 | // e.a) Catastrofic energy losss in material | |
105 | // e.b) Not further improvement (no space points) | |
106 | // Usage: | |
107 | // a.) Tracking: Starting parameter for Refit inward | |
108 | // b.) Visualization | |
109 | // c.) QA | |
110 | // NOTICE: Should be not used for the physic analysis | |
111 | // Function: | |
112 | // const AliExternalTrackParam *GetOuterParam() const { return fOp;} | |
113 | // | |
114 | //----------------------------------------------------------------- | |
115 | ||
116 | #include <TMath.h> | |
117 | #include <TParticle.h> | |
118 | ||
119 | #include "AliESDVertex.h" | |
120 | #include "AliESDtrack.h" | |
121 | #include "AliKalmanTrack.h" | |
122 | #include "AliVTrack.h" | |
123 | #include "AliLog.h" | |
124 | #include "AliTrackPointArray.h" | |
125 | #include "TPolyMarker3D.h" | |
126 | ||
127 | ClassImp(AliESDtrack) | |
128 | ||
129 | void SetPIDValues(Double_t * dest, const Double_t * src, Int_t n) { | |
130 | // This function copies "n" PID weights from "scr" to "dest" | |
131 | // and normalizes their sum to 1 thus producing conditional probabilities. | |
132 | // The negative weights are set to 0. | |
133 | // In case all the weights are non-positive they are replaced by | |
134 | // uniform probabilities | |
135 | ||
136 | if (n<=0) return; | |
137 | ||
138 | Float_t uniform = 1./(Float_t)n; | |
139 | ||
140 | Float_t sum = 0; | |
141 | for (Int_t i=0; i<n; i++) | |
142 | if (src[i]>=0) { | |
143 | sum+=src[i]; | |
144 | dest[i] = src[i]; | |
145 | } | |
146 | else { | |
147 | dest[i] = 0; | |
148 | } | |
149 | ||
150 | if(sum>0) | |
151 | for (Int_t i=0; i<n; i++) dest[i] /= sum; | |
152 | else | |
153 | for (Int_t i=0; i<n; i++) dest[i] = uniform; | |
154 | } | |
155 | ||
156 | //_______________________________________________________________________ | |
157 | AliESDtrack::AliESDtrack() : | |
158 | AliExternalTrackParam(), | |
159 | fCp(0), | |
160 | fIp(0), | |
161 | fTPCInner(0), | |
162 | fOp(0), | |
163 | fFriendTrack(new AliESDfriendTrack()), | |
164 | fTPCClusterMap(159),//number of padrows | |
165 | fTPCSharedMap(159),//number of padrows | |
166 | fFlags(0), | |
167 | fID(0), | |
168 | fLabel(0), | |
169 | fITSLabel(0), | |
170 | fTPCLabel(0), | |
171 | fTRDLabel(0), | |
172 | fTOFCalChannel(0), | |
173 | fTOFindex(-1), | |
174 | fHMPIDqn(0), | |
175 | fHMPIDcluIdx(-1), | |
176 | fEMCALindex(kEMCALNoMatch), | |
177 | fHMPIDtrkTheta(0), | |
178 | fHMPIDtrkPhi(0), | |
179 | fHMPIDsignal(0), | |
180 | fTrackLength(0), | |
181 | fdTPC(0),fzTPC(0), | |
182 | fCddTPC(0),fCdzTPC(0),fCzzTPC(0), | |
183 | fCchi2TPC(0), | |
184 | fD(0),fZ(0), | |
185 | fCdd(0),fCdz(0),fCzz(0), | |
186 | fCchi2(0), | |
187 | fITSchi2(0), | |
188 | fTPCchi2(0), | |
189 | fTRDchi2(0), | |
190 | fTOFchi2(0), | |
191 | fHMPIDchi2(0), | |
192 | fGlobalChi2(0), | |
193 | fITSsignal(0), | |
194 | fTPCsignal(0), | |
195 | fTPCsignalS(0), | |
196 | fTRDsignal(0), | |
197 | fTRDQuality(0), | |
198 | fTRDBudget(0), | |
199 | fTOFsignal(0), | |
200 | fTOFsignalToT(0), | |
201 | fTOFsignalRaw(0), | |
202 | fTOFsignalDz(0), | |
203 | fHMPIDtrkX(0), | |
204 | fHMPIDtrkY(0), | |
205 | fHMPIDmipX(0), | |
206 | fHMPIDmipY(0), | |
207 | fTPCncls(0), | |
208 | fTPCnclsF(0), | |
209 | fTPCsignalN(0), | |
210 | fITSncls(0), | |
211 | fITSClusterMap(0), | |
212 | fTRDncls(0), | |
213 | fTRDncls0(0), | |
214 | fTRDntracklets(0), | |
215 | fTRDnSlices(0), | |
216 | fTRDslices(0x0), | |
217 | fVertexID(-2) // -2 means an orphan track | |
218 | { | |
219 | // | |
220 | // The default ESD constructor | |
221 | // | |
222 | Int_t i; | |
223 | for (i=0; i<AliPID::kSPECIES; i++) { | |
224 | fTrackTime[i]=0.; | |
225 | fR[i]=0.; | |
226 | fITSr[i]=0.; | |
227 | fTPCr[i]=0.; | |
228 | fTRDr[i]=0.; | |
229 | fTOFr[i]=0.; | |
230 | fHMPIDr[i]=0.; | |
231 | } | |
232 | ||
233 | for (i=0; i<3; i++) { fKinkIndexes[i]=0;} | |
234 | for (i=0; i<3; i++) { fV0Indexes[i]=0;} | |
235 | for (i=0;i<kTRDnPlanes;i++) { | |
236 | fTRDTimBin[i]=0; | |
237 | } | |
238 | for (i=0;i<4;i++) {fTPCPoints[i]=0;} | |
239 | for (i=0;i<3;i++) {fTOFLabel[i]=0;} | |
240 | for (i=0;i<10;i++) {fTOFInfo[i]=0;} | |
241 | for (i=0;i<12;i++) {fITSModule[i]=-1;} | |
242 | } | |
243 | ||
244 | //_______________________________________________________________________ | |
245 | AliESDtrack::AliESDtrack(const AliESDtrack& track): | |
246 | AliExternalTrackParam(track), | |
247 | fCp(0), | |
248 | fIp(0), | |
249 | fTPCInner(0), | |
250 | fOp(0), | |
251 | fFriendTrack(0), | |
252 | fTPCClusterMap(track.fTPCClusterMap), | |
253 | fTPCSharedMap(track.fTPCSharedMap), | |
254 | fFlags(track.fFlags), | |
255 | fID(track.fID), | |
256 | fLabel(track.fLabel), | |
257 | fITSLabel(track.fITSLabel), | |
258 | fTPCLabel(track.fTPCLabel), | |
259 | fTRDLabel(track.fTRDLabel), | |
260 | fTOFCalChannel(track.fTOFCalChannel), | |
261 | fTOFindex(track.fTOFindex), | |
262 | fHMPIDqn(track.fHMPIDqn), | |
263 | fHMPIDcluIdx(track.fHMPIDcluIdx), | |
264 | fEMCALindex(track.fEMCALindex), | |
265 | fHMPIDtrkTheta(track.fHMPIDtrkTheta), | |
266 | fHMPIDtrkPhi(track.fHMPIDtrkPhi), | |
267 | fHMPIDsignal(track.fHMPIDsignal), | |
268 | fTrackLength(track.fTrackLength), | |
269 | fdTPC(track.fdTPC),fzTPC(track.fzTPC), | |
270 | fCddTPC(track.fCddTPC),fCdzTPC(track.fCdzTPC),fCzzTPC(track.fCzzTPC), | |
271 | fCchi2TPC(track.fCchi2TPC), | |
272 | fD(track.fD),fZ(track.fZ), | |
273 | fCdd(track.fCdd),fCdz(track.fCdz),fCzz(track.fCzz), | |
274 | fCchi2(track.fCchi2), | |
275 | fITSchi2(track.fITSchi2), | |
276 | fTPCchi2(track.fTPCchi2), | |
277 | fTRDchi2(track.fTRDchi2), | |
278 | fTOFchi2(track.fTOFchi2), | |
279 | fHMPIDchi2(track.fHMPIDchi2), | |
280 | fGlobalChi2(track.fGlobalChi2), | |
281 | fITSsignal(track.fITSsignal), | |
282 | fTPCsignal(track.fTPCsignal), | |
283 | fTPCsignalS(track.fTPCsignalS), | |
284 | fTRDsignal(track.fTRDsignal), | |
285 | fTRDQuality(track.fTRDQuality), | |
286 | fTRDBudget(track.fTRDBudget), | |
287 | fTOFsignal(track.fTOFsignal), | |
288 | fTOFsignalToT(track.fTOFsignalToT), | |
289 | fTOFsignalRaw(track.fTOFsignalRaw), | |
290 | fTOFsignalDz(track.fTOFsignalDz), | |
291 | fHMPIDtrkX(track.fHMPIDtrkX), | |
292 | fHMPIDtrkY(track.fHMPIDtrkY), | |
293 | fHMPIDmipX(track.fHMPIDmipX), | |
294 | fHMPIDmipY(track.fHMPIDmipY), | |
295 | fTPCncls(track.fTPCncls), | |
296 | fTPCnclsF(track.fTPCnclsF), | |
297 | fTPCsignalN(track.fTPCsignalN), | |
298 | fITSncls(track.fITSncls), | |
299 | fITSClusterMap(track.fITSClusterMap), | |
300 | fTRDncls(track.fTRDncls), | |
301 | fTRDncls0(track.fTRDncls0), | |
302 | fTRDntracklets(track.fTRDntracklets), | |
303 | fTRDnSlices(track.fTRDnSlices), | |
304 | fTRDslices(0x0), | |
305 | fVertexID(track.fVertexID) | |
306 | { | |
307 | // | |
308 | //copy constructor | |
309 | // | |
310 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i]=track.fTrackTime[i]; | |
311 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fR[i]=track.fR[i]; | |
312 | // | |
313 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=track.fITSr[i]; | |
314 | // | |
315 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=track.fTPCr[i]; | |
316 | for (Int_t i=0;i<4;i++) {fTPCPoints[i]=track.fTPCPoints[i];} | |
317 | for (Int_t i=0; i<3;i++) { fKinkIndexes[i]=track.fKinkIndexes[i];} | |
318 | for (Int_t i=0; i<3;i++) { fV0Indexes[i]=track.fV0Indexes[i];} | |
319 | // | |
320 | for (Int_t i=0;i<kTRDnPlanes;i++) { | |
321 | fTRDTimBin[i]=track.fTRDTimBin[i]; | |
322 | } | |
323 | ||
324 | if (fTRDnSlices) { | |
325 | fTRDslices=new Double32_t[fTRDnSlices]; | |
326 | for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=track.fTRDslices[i]; | |
327 | } | |
328 | ||
329 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i]=track.fTRDr[i]; | |
330 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i]=track.fTOFr[i]; | |
331 | for (Int_t i=0;i<3;i++) fTOFLabel[i]=track.fTOFLabel[i]; | |
332 | for (Int_t i=0;i<10;i++) fTOFInfo[i]=track.fTOFInfo[i]; | |
333 | for (Int_t i=0;i<12;i++) fITSModule[i]=track.fITSModule[i]; | |
334 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i]=track.fHMPIDr[i]; | |
335 | ||
336 | if (track.fCp) fCp=new AliExternalTrackParam(*track.fCp); | |
337 | if (track.fIp) fIp=new AliExternalTrackParam(*track.fIp); | |
338 | if (track.fTPCInner) fTPCInner=new AliExternalTrackParam(*track.fTPCInner); | |
339 | if (track.fOp) fOp=new AliExternalTrackParam(*track.fOp); | |
340 | ||
341 | if (track.fFriendTrack) fFriendTrack=new AliESDfriendTrack(*(track.fFriendTrack)); | |
342 | } | |
343 | ||
344 | //_______________________________________________________________________ | |
345 | AliESDtrack::AliESDtrack(const AliVTrack *track) : | |
346 | AliExternalTrackParam(track), | |
347 | fCp(0), | |
348 | fIp(0), | |
349 | fTPCInner(0), | |
350 | fOp(0), | |
351 | fFriendTrack(0), | |
352 | fTPCClusterMap(159),//number of padrows | |
353 | fTPCSharedMap(159),//number of padrows | |
354 | fFlags(0), | |
355 | fID(), | |
356 | fLabel(0), | |
357 | fITSLabel(0), | |
358 | fTPCLabel(0), | |
359 | fTRDLabel(0), | |
360 | fTOFCalChannel(0), | |
361 | fTOFindex(-1), | |
362 | fHMPIDqn(0), | |
363 | fHMPIDcluIdx(-1), | |
364 | fEMCALindex(kEMCALNoMatch), | |
365 | fHMPIDtrkTheta(0), | |
366 | fHMPIDtrkPhi(0), | |
367 | fHMPIDsignal(0), | |
368 | fTrackLength(0), | |
369 | fdTPC(0),fzTPC(0), | |
370 | fCddTPC(0),fCdzTPC(0),fCzzTPC(0), | |
371 | fCchi2TPC(0), | |
372 | fD(0),fZ(0), | |
373 | fCdd(0),fCdz(0),fCzz(0), | |
374 | fCchi2(0), | |
375 | fITSchi2(0), | |
376 | fTPCchi2(0), | |
377 | fTRDchi2(0), | |
378 | fTOFchi2(0), | |
379 | fHMPIDchi2(0), | |
380 | fGlobalChi2(0), | |
381 | fITSsignal(0), | |
382 | fTPCsignal(0), | |
383 | fTPCsignalS(0), | |
384 | fTRDsignal(0), | |
385 | fTRDQuality(0), | |
386 | fTRDBudget(0), | |
387 | fTOFsignal(0), | |
388 | fTOFsignalToT(0), | |
389 | fTOFsignalRaw(0), | |
390 | fTOFsignalDz(0), | |
391 | fHMPIDtrkX(0), | |
392 | fHMPIDtrkY(0), | |
393 | fHMPIDmipX(0), | |
394 | fHMPIDmipY(0), | |
395 | fTPCncls(0), | |
396 | fTPCnclsF(0), | |
397 | fTPCsignalN(0), | |
398 | fITSncls(0), | |
399 | fITSClusterMap(0), | |
400 | fTRDncls(0), | |
401 | fTRDncls0(0), | |
402 | fTRDntracklets(0), | |
403 | fTRDnSlices(0), | |
404 | fTRDslices(0x0), | |
405 | fVertexID(-2) // -2 means an orphan track | |
406 | { | |
407 | // | |
408 | // ESD track from AliVTrack. | |
409 | // This is not a copy constructor ! | |
410 | // | |
411 | ||
412 | if (track->InheritsFrom("AliExternalTrackParam")) { | |
413 | AliError("This is not a copy constructor. Use AliESDtrack(const AliESDtrack &) !"); | |
414 | AliWarning("Calling the default constructor..."); | |
415 | AliESDtrack(); | |
416 | return; | |
417 | } | |
418 | ||
419 | // Reset all the arrays | |
420 | Int_t i; | |
421 | for (i=0; i<AliPID::kSPECIES; i++) { | |
422 | fTrackTime[i]=0.; | |
423 | fR[i]=0.; | |
424 | fITSr[i]=0.; | |
425 | fTPCr[i]=0.; | |
426 | fTRDr[i]=0.; | |
427 | fTOFr[i]=0.; | |
428 | fHMPIDr[i]=0.; | |
429 | } | |
430 | ||
431 | for (i=0; i<3; i++) { fKinkIndexes[i]=0;} | |
432 | for (i=0; i<3; i++) { fV0Indexes[i]=-1;} | |
433 | for (i=0;i<kTRDnPlanes;i++) { | |
434 | fTRDTimBin[i]=0; | |
435 | } | |
436 | for (i=0;i<4;i++) {fTPCPoints[i]=0;} | |
437 | for (i=0;i<3;i++) {fTOFLabel[i]=0;} | |
438 | for (i=0;i<10;i++) {fTOFInfo[i]=0;} | |
439 | for (i=0;i<12;i++) {fITSModule[i]=-1;} | |
440 | ||
441 | // Set the ID | |
442 | SetID(track->GetID()); | |
443 | ||
444 | // Set ITS cluster map | |
445 | fITSClusterMap=track->GetITSClusterMap(); | |
446 | ||
447 | fITSncls=0; | |
448 | for(i=0; i<6; i++) { | |
449 | if(HasPointOnITSLayer(i)) fITSncls++; | |
450 | } | |
451 | ||
452 | // Set the combined PID | |
453 | const Double_t *pid = track->PID(); | |
454 | if(pid){ | |
455 | for (i=0; i<AliPID::kSPECIES; i++) fR[i]=pid[i]; | |
456 | } | |
457 | // AliESD track label | |
458 | SetLabel(track->GetLabel()); | |
459 | // Set the status | |
460 | SetStatus(track->GetStatus()); | |
461 | } | |
462 | ||
463 | //_______________________________________________________________________ | |
464 | AliESDtrack::AliESDtrack(TParticle * part) : | |
465 | AliExternalTrackParam(), | |
466 | fCp(0), | |
467 | fIp(0), | |
468 | fTPCInner(0), | |
469 | fOp(0), | |
470 | fFriendTrack(0), | |
471 | fTPCClusterMap(159),//number of padrows | |
472 | fTPCSharedMap(159),//number of padrows | |
473 | fFlags(0), | |
474 | fID(0), | |
475 | fLabel(0), | |
476 | fITSLabel(0), | |
477 | fTPCLabel(0), | |
478 | fTRDLabel(0), | |
479 | fTOFCalChannel(0), | |
480 | fTOFindex(-1), | |
481 | fHMPIDqn(0), | |
482 | fHMPIDcluIdx(-1), | |
483 | fEMCALindex(kEMCALNoMatch), | |
484 | fHMPIDtrkTheta(0), | |
485 | fHMPIDtrkPhi(0), | |
486 | fHMPIDsignal(0), | |
487 | fTrackLength(0), | |
488 | fdTPC(0),fzTPC(0), | |
489 | fCddTPC(0),fCdzTPC(0),fCzzTPC(0), | |
490 | fCchi2TPC(0), | |
491 | fD(0),fZ(0), | |
492 | fCdd(0),fCdz(0),fCzz(0), | |
493 | fCchi2(0), | |
494 | fITSchi2(0), | |
495 | fTPCchi2(0), | |
496 | fTRDchi2(0), | |
497 | fTOFchi2(0), | |
498 | fHMPIDchi2(0), | |
499 | fGlobalChi2(0), | |
500 | fITSsignal(0), | |
501 | fTPCsignal(0), | |
502 | fTPCsignalS(0), | |
503 | fTRDsignal(0), | |
504 | fTRDQuality(0), | |
505 | fTRDBudget(0), | |
506 | fTOFsignal(0), | |
507 | fTOFsignalToT(0), | |
508 | fTOFsignalRaw(0), | |
509 | fTOFsignalDz(0), | |
510 | fHMPIDtrkX(0), | |
511 | fHMPIDtrkY(0), | |
512 | fHMPIDmipX(0), | |
513 | fHMPIDmipY(0), | |
514 | fTPCncls(0), | |
515 | fTPCnclsF(0), | |
516 | fTPCsignalN(0), | |
517 | fITSncls(0), | |
518 | fITSClusterMap(0), | |
519 | fTRDncls(0), | |
520 | fTRDncls0(0), | |
521 | fTRDntracklets(0), | |
522 | fTRDnSlices(0), | |
523 | fTRDslices(0x0), | |
524 | fVertexID(-2) // -2 means an orphan track | |
525 | { | |
526 | // | |
527 | // ESD track from TParticle | |
528 | // | |
529 | ||
530 | // Reset all the arrays | |
531 | Int_t i; | |
532 | for (i=0; i<AliPID::kSPECIES; i++) { | |
533 | fTrackTime[i]=0.; | |
534 | fR[i]=0.; | |
535 | fITSr[i]=0.; | |
536 | fTPCr[i]=0.; | |
537 | fTRDr[i]=0.; | |
538 | fTOFr[i]=0.; | |
539 | fHMPIDr[i]=0.; | |
540 | } | |
541 | ||
542 | for (i=0; i<3; i++) { fKinkIndexes[i]=0;} | |
543 | for (i=0; i<3; i++) { fV0Indexes[i]=-1;} | |
544 | for (i=0;i<kTRDnPlanes;i++) { | |
545 | fTRDTimBin[i]=0; | |
546 | } | |
547 | for (i=0;i<4;i++) {fTPCPoints[i]=0;} | |
548 | for (i=0;i<3;i++) {fTOFLabel[i]=0;} | |
549 | for (i=0;i<10;i++) {fTOFInfo[i]=0;} | |
550 | for (i=0;i<12;i++) {fITSModule[i]=-1;} | |
551 | ||
552 | // Calculate the AliExternalTrackParam content | |
553 | ||
554 | Double_t xref; | |
555 | Double_t alpha; | |
556 | Double_t param[5]; | |
557 | Double_t covar[15]; | |
558 | ||
559 | // Calculate alpha: the rotation angle of the corresponding local system (TPC sector) | |
560 | alpha = part->Phi()*180./TMath::Pi(); | |
561 | if (alpha<0) alpha+= 360.; | |
562 | if (alpha>360) alpha -= 360.; | |
563 | ||
564 | Int_t sector = (Int_t)(alpha/20.); | |
565 | alpha = 10. + 20.*sector; | |
566 | alpha /= 180; | |
567 | alpha *= TMath::Pi(); | |
568 | ||
569 | // Covariance matrix: no errors, the parameters are exact | |
570 | for (i=0; i<15; i++) covar[i]=0.; | |
571 | ||
572 | // Get the vertex of origin and the momentum | |
573 | TVector3 ver(part->Vx(),part->Vy(),part->Vz()); | |
574 | TVector3 mom(part->Px(),part->Py(),part->Pz()); | |
575 | ||
576 | // Rotate to the local coordinate system (TPC sector) | |
577 | ver.RotateZ(-alpha); | |
578 | mom.RotateZ(-alpha); | |
579 | ||
580 | // X of the referense plane | |
581 | xref = ver.X(); | |
582 | ||
583 | Int_t pdgCode = part->GetPdgCode(); | |
584 | ||
585 | Double_t charge = | |
586 | TDatabasePDG::Instance()->GetParticle(pdgCode)->Charge(); | |
587 | ||
588 | param[0] = ver.Y(); | |
589 | param[1] = ver.Z(); | |
590 | param[2] = TMath::Sin(mom.Phi()); | |
591 | param[3] = mom.Pz()/mom.Pt(); | |
592 | param[4] = TMath::Sign(1/mom.Pt(),charge); | |
593 | ||
594 | // Set AliExternalTrackParam | |
595 | Set(xref, alpha, param, covar); | |
596 | ||
597 | // Set the PID | |
598 | Int_t indexPID = 99; | |
599 | ||
600 | switch (TMath::Abs(pdgCode)) { | |
601 | ||
602 | case 11: // electron | |
603 | indexPID = 0; | |
604 | break; | |
605 | ||
606 | case 13: // muon | |
607 | indexPID = 1; | |
608 | break; | |
609 | ||
610 | case 211: // pion | |
611 | indexPID = 2; | |
612 | break; | |
613 | ||
614 | case 321: // kaon | |
615 | indexPID = 3; | |
616 | break; | |
617 | ||
618 | case 2212: // proton | |
619 | indexPID = 4; | |
620 | break; | |
621 | ||
622 | default: | |
623 | break; | |
624 | } | |
625 | ||
626 | // If the particle is not e,mu,pi,K or p the PID probabilities are set to 0 | |
627 | if (indexPID < AliPID::kSPECIES) { | |
628 | fR[indexPID]=1.; | |
629 | fITSr[indexPID]=1.; | |
630 | fTPCr[indexPID]=1.; | |
631 | fTRDr[indexPID]=1.; | |
632 | fTOFr[indexPID]=1.; | |
633 | fHMPIDr[indexPID]=1.; | |
634 | ||
635 | } | |
636 | // AliESD track label | |
637 | SetLabel(part->GetUniqueID()); | |
638 | ||
639 | } | |
640 | ||
641 | //_______________________________________________________________________ | |
642 | AliESDtrack::~AliESDtrack(){ | |
643 | // | |
644 | // This is destructor according Coding Conventrions | |
645 | // | |
646 | //printf("Delete track\n"); | |
647 | delete fIp; | |
648 | delete fTPCInner; | |
649 | delete fOp; | |
650 | delete fCp; | |
651 | delete fFriendTrack; | |
652 | if(fTRDnSlices) | |
653 | delete[] fTRDslices; | |
654 | } | |
655 | ||
656 | AliESDtrack &AliESDtrack::operator=(const AliESDtrack &source){ | |
657 | ||
658 | ||
659 | if(&source == this) return *this; | |
660 | AliExternalTrackParam::operator=(source); | |
661 | ||
662 | ||
663 | if(source.fCp){ | |
664 | // we have the trackparam: assign or copy construct | |
665 | if(fCp)*fCp = *source.fCp; | |
666 | else fCp = new AliExternalTrackParam(*source.fCp); | |
667 | } | |
668 | else{ | |
669 | // no track param delete the old one | |
670 | if(fCp)delete fCp; | |
671 | fCp = 0; | |
672 | } | |
673 | ||
674 | if(source.fIp){ | |
675 | // we have the trackparam: assign or copy construct | |
676 | if(fIp)*fIp = *source.fIp; | |
677 | else fIp = new AliExternalTrackParam(*source.fIp); | |
678 | } | |
679 | else{ | |
680 | // no track param delete the old one | |
681 | if(fIp)delete fIp; | |
682 | fIp = 0; | |
683 | } | |
684 | ||
685 | ||
686 | if(source.fTPCInner){ | |
687 | // we have the trackparam: assign or copy construct | |
688 | if(fTPCInner) *fTPCInner = *source.fTPCInner; | |
689 | else fTPCInner = new AliExternalTrackParam(*source.fTPCInner); | |
690 | } | |
691 | else{ | |
692 | // no track param delete the old one | |
693 | if(fTPCInner)delete fTPCInner; | |
694 | fTPCInner = 0; | |
695 | } | |
696 | ||
697 | ||
698 | if(source.fOp){ | |
699 | // we have the trackparam: assign or copy construct | |
700 | if(fOp) *fOp = *source.fOp; | |
701 | else fOp = new AliExternalTrackParam(*source.fOp); | |
702 | } | |
703 | else{ | |
704 | // no track param delete the old one | |
705 | if(fOp)delete fOp; | |
706 | fOp = 0; | |
707 | } | |
708 | ||
709 | // copy also the friend track | |
710 | // use copy constructor | |
711 | if(source.fFriendTrack){ | |
712 | // we have the trackparam: assign or copy construct | |
713 | delete fFriendTrack; fFriendTrack=new AliESDfriendTrack(*source.fFriendTrack); | |
714 | } | |
715 | else{ | |
716 | // no track param delete the old one | |
717 | delete fFriendTrack; fFriendTrack= 0; | |
718 | } | |
719 | ||
720 | fTPCClusterMap = source.fTPCClusterMap; | |
721 | fTPCSharedMap = source.fTPCSharedMap; | |
722 | // the simple stuff | |
723 | fFlags = source.fFlags; | |
724 | fID = source.fID; | |
725 | fLabel = source.fLabel; | |
726 | fITSLabel = source.fITSLabel; | |
727 | for(int i = 0; i< 12;++i){ | |
728 | fITSModule[i] = source.fITSModule[i]; | |
729 | } | |
730 | fTPCLabel = source.fTPCLabel; | |
731 | fTRDLabel = source.fTRDLabel; | |
732 | for(int i = 0; i< 3;++i){ | |
733 | fTOFLabel[i] = source.fTOFLabel[i]; | |
734 | } | |
735 | fTOFCalChannel = source.fTOFCalChannel; | |
736 | fTOFindex = source.fTOFindex; | |
737 | fHMPIDqn = source.fHMPIDqn; | |
738 | fHMPIDcluIdx = source.fHMPIDcluIdx; | |
739 | fEMCALindex = source.fEMCALindex; | |
740 | ||
741 | for(int i = 0; i< 3;++i){ | |
742 | fKinkIndexes[i] = source.fKinkIndexes[i]; | |
743 | fV0Indexes[i] = source.fV0Indexes[i]; | |
744 | } | |
745 | ||
746 | for(int i = 0; i< AliPID::kSPECIES;++i){ | |
747 | fR[i] = source.fR[i]; | |
748 | fITSr[i] = source.fITSr[i]; | |
749 | fTPCr[i] = source.fTPCr[i]; | |
750 | fTRDr[i] = source.fTRDr[i]; | |
751 | fTOFr[i] = source.fTOFr[i]; | |
752 | fHMPIDr[i] = source.fHMPIDr[i]; | |
753 | fTrackTime[i] = source.fTrackTime[i]; | |
754 | } | |
755 | ||
756 | fHMPIDtrkTheta = source.fHMPIDtrkTheta; | |
757 | fHMPIDtrkPhi = source.fHMPIDtrkPhi; | |
758 | fHMPIDsignal = source.fHMPIDsignal; | |
759 | ||
760 | ||
761 | fTrackLength = source. fTrackLength; | |
762 | fdTPC = source.fdTPC; | |
763 | fzTPC = source.fzTPC; | |
764 | fCddTPC = source.fCddTPC; | |
765 | fCdzTPC = source.fCdzTPC; | |
766 | fCzzTPC = source.fCzzTPC; | |
767 | fCchi2TPC = source.fCchi2TPC; | |
768 | ||
769 | fD = source.fD; | |
770 | fZ = source.fZ; | |
771 | fCdd = source.fCdd; | |
772 | fCdz = source.fCdz; | |
773 | fCzz = source.fCzz; | |
774 | fCchi2 = source.fCchi2; | |
775 | ||
776 | fITSchi2 = source.fITSchi2; | |
777 | fTPCchi2 = source.fTPCchi2; | |
778 | fTRDchi2 = source.fTRDchi2; | |
779 | fTOFchi2 = source.fTOFchi2; | |
780 | fHMPIDchi2 = source.fHMPIDchi2; | |
781 | ||
782 | fGlobalChi2 = source.fGlobalChi2; | |
783 | ||
784 | fITSsignal = source.fITSsignal; | |
785 | fTPCsignal = source.fTPCsignal; | |
786 | fTPCsignalS = source.fTPCsignalS; | |
787 | for(int i = 0; i< 4;++i){ | |
788 | fTPCPoints[i] = source.fTPCPoints[i]; | |
789 | } | |
790 | fTRDsignal = source.fTRDsignal; | |
791 | ||
792 | for(int i = 0;i < kTRDnPlanes;++i){ | |
793 | fTRDTimBin[i] = source.fTRDTimBin[i]; | |
794 | } | |
795 | ||
796 | if(fTRDnSlices) | |
797 | delete[] fTRDslices; | |
798 | fTRDslices=0; | |
799 | fTRDnSlices=source.fTRDnSlices; | |
800 | if (fTRDnSlices) { | |
801 | fTRDslices=new Double32_t[fTRDnSlices]; | |
802 | for(int j = 0;j < fTRDnSlices;++j) fTRDslices[j] = source.fTRDslices[j]; | |
803 | } | |
804 | ||
805 | fTRDQuality = source.fTRDQuality; | |
806 | fTRDBudget = source.fTRDBudget; | |
807 | fTOFsignal = source.fTOFsignal; | |
808 | fTOFsignalToT = source.fTOFsignalToT; | |
809 | fTOFsignalRaw = source.fTOFsignalRaw; | |
810 | fTOFsignalDz = source.fTOFsignalDz; | |
811 | ||
812 | for(int i = 0;i<10;++i){ | |
813 | fTOFInfo[i] = source.fTOFInfo[i]; | |
814 | } | |
815 | ||
816 | fHMPIDtrkX = source.fHMPIDtrkX; | |
817 | fHMPIDtrkY = source.fHMPIDtrkY; | |
818 | fHMPIDmipX = source.fHMPIDmipX; | |
819 | fHMPIDmipY = source.fHMPIDmipY; | |
820 | ||
821 | fTPCncls = source.fTPCncls; | |
822 | fTPCnclsF = source.fTPCnclsF; | |
823 | fTPCsignalN = source.fTPCsignalN; | |
824 | ||
825 | fITSncls = source.fITSncls; | |
826 | fITSClusterMap = source.fITSClusterMap; | |
827 | fTRDncls = source.fTRDncls; | |
828 | fTRDncls0 = source.fTRDncls0; | |
829 | fTRDntracklets = source.fTRDntracklets; | |
830 | fVertexID = source.fVertexID; | |
831 | return *this; | |
832 | } | |
833 | ||
834 | ||
835 | ||
836 | void AliESDtrack::Copy(TObject &obj) const { | |
837 | ||
838 | // this overwrites the virtual TOBject::Copy() | |
839 | // to allow run time copying without casting | |
840 | // in AliESDEvent | |
841 | ||
842 | if(this==&obj)return; | |
843 | AliESDtrack *robj = dynamic_cast<AliESDtrack*>(&obj); | |
844 | if(!robj)return; // not an AliESDtrack | |
845 | *robj = *this; | |
846 | ||
847 | } | |
848 | ||
849 | ||
850 | ||
851 | void AliESDtrack::AddCalibObject(TObject * object){ | |
852 | // | |
853 | // add calib object to the list | |
854 | // | |
855 | if (!fFriendTrack) fFriendTrack = new AliESDfriendTrack; | |
856 | fFriendTrack->AddCalibObject(object); | |
857 | } | |
858 | ||
859 | TObject * AliESDtrack::GetCalibObject(Int_t index){ | |
860 | // | |
861 | // return calib objct at given position | |
862 | // | |
863 | if (!fFriendTrack) return 0; | |
864 | return fFriendTrack->GetCalibObject(index); | |
865 | } | |
866 | ||
867 | ||
868 | Bool_t AliESDtrack::FillTPCOnlyTrack(AliESDtrack &track){ | |
869 | ||
870 | // Fills the information of the TPC-only first reconstruction pass | |
871 | // into the passed ESDtrack object. For consistency fTPCInner is also filled | |
872 | // again | |
873 | ||
874 | ||
875 | ||
876 | // For data produced before r26675 | |
877 | // RelateToVertexTPC was not properly called during reco | |
878 | // so you'll have to call it again, before FillTPCOnlyTrack | |
879 | // Float_t p[2],cov[3]; | |
880 | // track->GetImpactParametersTPC(p,cov); | |
881 | // if(p[0]==0&&p[1]==0) // <- Default values | |
882 | // track->RelateToVertexTPC(esd->GetPrimaryVertexTPC(),esd->GetMagneticField(),kVeryBig); | |
883 | ||
884 | ||
885 | if(!fTPCInner)return kFALSE; | |
886 | ||
887 | // fill the TPC track params to the global track parameters | |
888 | track.Set(fTPCInner->GetX(),fTPCInner->GetAlpha(),fTPCInner->GetParameter(),fTPCInner->GetCovariance()); | |
889 | track.fD = fdTPC; | |
890 | track.fZ = fzTPC; | |
891 | track.fCdd = fCddTPC; | |
892 | track.fCdz = fCdzTPC; | |
893 | track.fCzz = fCzzTPC; | |
894 | ||
895 | // copy the TPCinner parameters | |
896 | if(track.fTPCInner) *track.fTPCInner = *fTPCInner; | |
897 | else track.fTPCInner = new AliExternalTrackParam(*fTPCInner); | |
898 | track.fdTPC = fdTPC; | |
899 | track.fzTPC = fzTPC; | |
900 | track.fCddTPC = fCddTPC; | |
901 | track.fCdzTPC = fCdzTPC; | |
902 | track.fCzzTPC = fCzzTPC; | |
903 | track.fCchi2TPC = fCchi2TPC; | |
904 | ||
905 | ||
906 | // copy all other TPC specific parameters | |
907 | ||
908 | // replace label by TPC label | |
909 | track.fLabel = fTPCLabel; | |
910 | track.fTPCLabel = fTPCLabel; | |
911 | ||
912 | track.fTPCchi2 = fTPCchi2; | |
913 | track.fTPCsignal = fTPCsignal; | |
914 | track.fTPCsignalS = fTPCsignalS; | |
915 | for(int i = 0;i<4;++i)track.fTPCPoints[i] = fTPCPoints[i]; | |
916 | ||
917 | track.fTPCncls = fTPCncls; | |
918 | track.fTPCnclsF = fTPCnclsF; | |
919 | track.fTPCsignalN = fTPCsignalN; | |
920 | ||
921 | // PID | |
922 | for(int i=0;i<AliPID::kSPECIES;++i){ | |
923 | track.fTPCr[i] = fTPCr[i]; | |
924 | // combined PID is TPC only! | |
925 | track.fR[i] = fTPCr[i]; | |
926 | } | |
927 | track.fTPCClusterMap = fTPCClusterMap; | |
928 | track.fTPCSharedMap = fTPCSharedMap; | |
929 | ||
930 | ||
931 | // reset the flags | |
932 | track.fFlags = kTPCin; | |
933 | track.fID = fID; | |
934 | ||
935 | track.fFlags |= fFlags & kTPCpid; //copy the TPCpid status flag | |
936 | ||
937 | for (Int_t i=0;i<3;i++) track.fKinkIndexes[i] = fKinkIndexes[i]; | |
938 | ||
939 | return kTRUE; | |
940 | ||
941 | } | |
942 | ||
943 | //_______________________________________________________________________ | |
944 | void AliESDtrack::MakeMiniESDtrack(){ | |
945 | // Resets everything except | |
946 | // fFlags: Reconstruction status flags | |
947 | // fLabel: Track label | |
948 | // fID: Unique ID of the track | |
949 | // Impact parameter information | |
950 | // fR[AliPID::kSPECIES]: combined "detector response probability" | |
951 | // Running track parameters in the base class (AliExternalTrackParam) | |
952 | ||
953 | fTrackLength = 0; | |
954 | ||
955 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i] = 0; | |
956 | ||
957 | // Reset track parameters constrained to the primary vertex | |
958 | delete fCp;fCp = 0; | |
959 | ||
960 | // Reset track parameters at the inner wall of TPC | |
961 | delete fIp;fIp = 0; | |
962 | delete fTPCInner;fTPCInner=0; | |
963 | // Reset track parameters at the inner wall of the TRD | |
964 | delete fOp;fOp = 0; | |
965 | ||
966 | ||
967 | // Reset ITS track related information | |
968 | fITSchi2 = 0; | |
969 | fITSncls = 0; | |
970 | fITSClusterMap=0; | |
971 | fITSsignal = 0; | |
972 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=0; | |
973 | fITSLabel = 0; | |
974 | ||
975 | // Reset TPC related track information | |
976 | fTPCchi2 = 0; | |
977 | fTPCncls = 0; | |
978 | fTPCnclsF = 0; | |
979 | fTPCClusterMap = 0; | |
980 | fTPCSharedMap = 0; | |
981 | fTPCsignal= 0; | |
982 | fTPCsignalS= 0; | |
983 | fTPCsignalN= 0; | |
984 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0; | |
985 | fTPCLabel=0; | |
986 | for (Int_t i=0;i<4;i++) fTPCPoints[i] = 0; | |
987 | for (Int_t i=0; i<3;i++) fKinkIndexes[i] = 0; | |
988 | for (Int_t i=0; i<3;i++) fV0Indexes[i] = 0; | |
989 | ||
990 | // Reset TRD related track information | |
991 | fTRDchi2 = 0; | |
992 | fTRDncls = 0; | |
993 | fTRDncls0 = 0; | |
994 | fTRDsignal = 0; | |
995 | for (Int_t i=0;i<kTRDnPlanes;i++) { | |
996 | fTRDTimBin[i] = 0; | |
997 | } | |
998 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i] = 0; | |
999 | fTRDLabel = 0; | |
1000 | fTRDQuality = 0; | |
1001 | fTRDntracklets = 0; | |
1002 | if(fTRDnSlices) | |
1003 | delete[] fTRDslices; | |
1004 | fTRDslices=0x0; | |
1005 | fTRDnSlices=0; | |
1006 | fTRDBudget = 0; | |
1007 | ||
1008 | // Reset TOF related track information | |
1009 | fTOFchi2 = 0; | |
1010 | fTOFindex = -1; | |
1011 | fTOFsignal = 0; | |
1012 | fTOFCalChannel = 0; | |
1013 | fTOFsignalToT = 0; | |
1014 | fTOFsignalRaw = 0; | |
1015 | fTOFsignalDz = 0; | |
1016 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i] = 0; | |
1017 | for (Int_t i=0;i<3;i++) fTOFLabel[i] = 0; | |
1018 | for (Int_t i=0;i<10;i++) fTOFInfo[i] = 0; | |
1019 | ||
1020 | // Reset HMPID related track information | |
1021 | fHMPIDchi2 = 0; | |
1022 | fHMPIDqn = 0; | |
1023 | fHMPIDcluIdx = -1; | |
1024 | fHMPIDsignal = 0; | |
1025 | for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i] = 0; | |
1026 | fHMPIDtrkTheta = 0; | |
1027 | fHMPIDtrkPhi = 0; | |
1028 | fHMPIDtrkX = 0; | |
1029 | fHMPIDtrkY = 0; | |
1030 | fHMPIDmipX = 0; | |
1031 | fHMPIDmipY = 0; | |
1032 | fEMCALindex = kEMCALNoMatch; | |
1033 | ||
1034 | // reset global track chi2 | |
1035 | fGlobalChi2 = 0; | |
1036 | ||
1037 | fVertexID = -2; // an orphan track | |
1038 | ||
1039 | delete fFriendTrack; fFriendTrack = 0; | |
1040 | } | |
1041 | //_______________________________________________________________________ | |
1042 | Double_t AliESDtrack::GetMass() const { | |
1043 | // Returns the mass of the most probable particle type | |
1044 | Float_t max=0.; | |
1045 | Int_t k=-1; | |
1046 | for (Int_t i=0; i<AliPID::kSPECIES; i++) { | |
1047 | if (fR[i]>max) {k=i; max=fR[i];} | |
1048 | } | |
1049 | if (k==0) { // dE/dx "crossing points" in the TPC | |
1050 | Double_t p=GetP(); | |
1051 | if ((p>0.38)&&(p<0.48)) | |
1052 | if (fR[0]<fR[3]*10.) return AliPID::ParticleMass(AliPID::kKaon); | |
1053 | if ((p>0.75)&&(p<0.85)) | |
1054 | if (fR[0]<fR[4]*10.) return AliPID::ParticleMass(AliPID::kProton); | |
1055 | return 0.00051; | |
1056 | } | |
1057 | if (k==1) return AliPID::ParticleMass(AliPID::kMuon); | |
1058 | if (k==2||k==-1) return AliPID::ParticleMass(AliPID::kPion); | |
1059 | if (k==3) return AliPID::ParticleMass(AliPID::kKaon); | |
1060 | if (k==4) return AliPID::ParticleMass(AliPID::kProton); | |
1061 | AliWarning("Undefined mass !"); | |
1062 | return AliPID::ParticleMass(AliPID::kPion); | |
1063 | } | |
1064 | ||
1065 | //______________________________________________________________________________ | |
1066 | Double_t AliESDtrack::E() const | |
1067 | { | |
1068 | // Returns the energy of the particle given its assumed mass. | |
1069 | // Assumes the pion mass if the particle can't be identified properly. | |
1070 | ||
1071 | Double_t m = M(); | |
1072 | Double_t p = P(); | |
1073 | return TMath::Sqrt(p*p + m*m); | |
1074 | } | |
1075 | ||
1076 | //______________________________________________________________________________ | |
1077 | Double_t AliESDtrack::Y() const | |
1078 | { | |
1079 | // Returns the rapidity of a particle given its assumed mass. | |
1080 | // Assumes the pion mass if the particle can't be identified properly. | |
1081 | ||
1082 | Double_t e = E(); | |
1083 | Double_t pz = Pz(); | |
1084 | if (e != TMath::Abs(pz)) { // energy was not equal to pz | |
1085 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
1086 | } else { // energy was equal to pz | |
1087 | return -999.; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | //_______________________________________________________________________ | |
1092 | Bool_t AliESDtrack::UpdateTrackParams(const AliKalmanTrack *t, ULong_t flags){ | |
1093 | // | |
1094 | // This function updates track's running parameters | |
1095 | // | |
1096 | Int_t *index=0; | |
1097 | Bool_t rc=kTRUE; | |
1098 | ||
1099 | SetStatus(flags); | |
1100 | fLabel=t->GetLabel(); | |
1101 | ||
1102 | if (t->IsStartedTimeIntegral()) { | |
1103 | SetStatus(kTIME); | |
1104 | Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times); | |
1105 | SetIntegratedLength(t->GetIntegratedLength()); | |
1106 | } | |
1107 | ||
1108 | Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance()); | |
1109 | if (flags==kITSout) fFriendTrack->SetITSOut(*t); | |
1110 | if (flags==kTPCout) fFriendTrack->SetTPCOut(*t); | |
1111 | if (flags==kTRDrefit) fFriendTrack->SetTRDIn(*t); | |
1112 | ||
1113 | switch (flags) { | |
1114 | ||
1115 | case kITSin: case kITSout: case kITSrefit: | |
1116 | fITSClusterMap=0; | |
1117 | fITSncls=t->GetNumberOfClusters(); | |
1118 | index=fFriendTrack->GetITSindices(); | |
1119 | for (Int_t i=0;i<AliESDfriendTrack::kMaxITScluster;i++) { | |
1120 | index[i]=t->GetClusterIndex(i); | |
1121 | if (i<fITSncls) { | |
1122 | Int_t l=(index[i] & 0xf0000000) >> 28; | |
1123 | SETBIT(fITSClusterMap,l); | |
1124 | } | |
1125 | } | |
1126 | fITSchi2=t->GetChi2(); | |
1127 | fITSsignal=t->GetPIDsignal(); | |
1128 | fITSLabel = t->GetLabel(); | |
1129 | // keep in fOp the parameters outside ITS for ITS stand-alone tracks | |
1130 | if (flags==kITSout) { | |
1131 | if (!fOp) fOp=new AliExternalTrackParam(*t); | |
1132 | else | |
1133 | fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance()); | |
1134 | } | |
1135 | break; | |
1136 | ||
1137 | case kTPCin: case kTPCrefit: | |
1138 | fTPCLabel = t->GetLabel(); | |
1139 | if (flags==kTPCin) fTPCInner=new AliExternalTrackParam(*t); | |
1140 | if (!fIp) fIp=new AliExternalTrackParam(*t); | |
1141 | else | |
1142 | fIp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance()); | |
1143 | case kTPCout: | |
1144 | index=fFriendTrack->GetTPCindices(); | |
1145 | if (flags & kTPCout){ | |
1146 | if (!fOp) fOp=new AliExternalTrackParam(*t); | |
1147 | else | |
1148 | fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance()); | |
1149 | } | |
1150 | fTPCncls=t->GetNumberOfClusters(); | |
1151 | fTPCchi2=t->GetChi2(); | |
1152 | ||
1153 | {//prevrow must be declared in separate namespace, otherwise compiler cries: | |
1154 | //"jump to case label crosses initialization of `Int_t prevrow'" | |
1155 | Int_t prevrow = -1; | |
1156 | // for (Int_t i=0;i<fTPCncls;i++) | |
1157 | for (Int_t i=0;i<AliESDfriendTrack::kMaxTPCcluster;i++) | |
1158 | { | |
1159 | index[i]=t->GetClusterIndex(i); | |
1160 | Int_t idx = index[i]; | |
1161 | ||
1162 | if (idx<0) continue; | |
1163 | ||
1164 | // Piotr's Cluster Map for HBT | |
1165 | // ### please change accordingly if cluster array is changing | |
1166 | // to "New TPC Tracking" style (with gaps in array) | |
1167 | Int_t sect = (idx&0xff000000)>>24; | |
1168 | Int_t row = (idx&0x00ff0000)>>16; | |
1169 | if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors | |
1170 | ||
1171 | fTPCClusterMap.SetBitNumber(row,kTRUE); | |
1172 | ||
1173 | //Fill the gap between previous row and this row with 0 bits | |
1174 | //In case ### pleas change it as well - just set bit 0 in case there | |
1175 | //is no associated clusters for current "i" | |
1176 | if (prevrow < 0) | |
1177 | { | |
1178 | prevrow = row;//if previous bit was not assigned yet == this is the first one | |
1179 | } | |
1180 | else | |
1181 | { //we don't know the order (inner to outer or reverse) | |
1182 | //just to be save in case it is going to change | |
1183 | Int_t n = 0, m = 0; | |
1184 | if (prevrow < row) | |
1185 | { | |
1186 | n = prevrow; | |
1187 | m = row; | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | n = row; | |
1192 | m = prevrow; | |
1193 | } | |
1194 | ||
1195 | for (Int_t j = n+1; j < m; j++) | |
1196 | { | |
1197 | fTPCClusterMap.SetBitNumber(j,kFALSE); | |
1198 | } | |
1199 | prevrow = row; | |
1200 | } | |
1201 | // End Of Piotr's Cluster Map for HBT | |
1202 | } | |
1203 | } | |
1204 | fTPCsignal=t->GetPIDsignal(); | |
1205 | break; | |
1206 | ||
1207 | case kTRDin: case kTRDrefit: | |
1208 | break; | |
1209 | case kTRDout: | |
1210 | index = fFriendTrack->GetTRDindices(); | |
1211 | fTRDLabel = t->GetLabel(); | |
1212 | fTRDchi2 = t->GetChi2(); | |
1213 | fTRDncls = t->GetNumberOfClusters(); | |
1214 | for (Int_t i=0;i<6;i++) index[i]=t->GetTrackletIndex(i); | |
1215 | ||
1216 | fTRDsignal=t->GetPIDsignal(); | |
1217 | break; | |
1218 | case kTRDbackup: | |
1219 | if (!fOp) fOp=new AliExternalTrackParam(*t); | |
1220 | else | |
1221 | fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance()); | |
1222 | fTRDncls0 = t->GetNumberOfClusters(); | |
1223 | break; | |
1224 | case kTOFin: | |
1225 | break; | |
1226 | case kTOFout: | |
1227 | break; | |
1228 | case kTRDStop: | |
1229 | break; | |
1230 | default: | |
1231 | AliError("Wrong flag !"); | |
1232 | return kFALSE; | |
1233 | } | |
1234 | ||
1235 | return rc; | |
1236 | } | |
1237 | ||
1238 | //_______________________________________________________________________ | |
1239 | void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const { | |
1240 | //--------------------------------------------------------------------- | |
1241 | // This function returns external representation of the track parameters | |
1242 | //--------------------------------------------------------------------- | |
1243 | x=GetX(); | |
1244 | for (Int_t i=0; i<5; i++) p[i]=GetParameter()[i]; | |
1245 | } | |
1246 | ||
1247 | //_______________________________________________________________________ | |
1248 | void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const { | |
1249 | //--------------------------------------------------------------------- | |
1250 | // This function returns external representation of the cov. matrix | |
1251 | //--------------------------------------------------------------------- | |
1252 | for (Int_t i=0; i<15; i++) cov[i]=AliExternalTrackParam::GetCovariance()[i]; | |
1253 | } | |
1254 | ||
1255 | //_______________________________________________________________________ | |
1256 | Bool_t AliESDtrack::GetConstrainedExternalParameters | |
1257 | (Double_t &alpha, Double_t &x, Double_t p[5]) const { | |
1258 | //--------------------------------------------------------------------- | |
1259 | // This function returns the constrained external track parameters | |
1260 | //--------------------------------------------------------------------- | |
1261 | if (!fCp) return kFALSE; | |
1262 | alpha=fCp->GetAlpha(); | |
1263 | x=fCp->GetX(); | |
1264 | for (Int_t i=0; i<5; i++) p[i]=fCp->GetParameter()[i]; | |
1265 | return kTRUE; | |
1266 | } | |
1267 | ||
1268 | //_______________________________________________________________________ | |
1269 | Bool_t | |
1270 | AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const { | |
1271 | //--------------------------------------------------------------------- | |
1272 | // This function returns the constrained external cov. matrix | |
1273 | //--------------------------------------------------------------------- | |
1274 | if (!fCp) return kFALSE; | |
1275 | for (Int_t i=0; i<15; i++) c[i]=fCp->GetCovariance()[i]; | |
1276 | return kTRUE; | |
1277 | } | |
1278 | ||
1279 | Bool_t | |
1280 | AliESDtrack::GetInnerExternalParameters | |
1281 | (Double_t &alpha, Double_t &x, Double_t p[5]) const { | |
1282 | //--------------------------------------------------------------------- | |
1283 | // This function returns external representation of the track parameters | |
1284 | // at the inner layer of TPC | |
1285 | //--------------------------------------------------------------------- | |
1286 | if (!fIp) return kFALSE; | |
1287 | alpha=fIp->GetAlpha(); | |
1288 | x=fIp->GetX(); | |
1289 | for (Int_t i=0; i<5; i++) p[i]=fIp->GetParameter()[i]; | |
1290 | return kTRUE; | |
1291 | } | |
1292 | ||
1293 | Bool_t | |
1294 | AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const { | |
1295 | //--------------------------------------------------------------------- | |
1296 | // This function returns external representation of the cov. matrix | |
1297 | // at the inner layer of TPC | |
1298 | //--------------------------------------------------------------------- | |
1299 | if (!fIp) return kFALSE; | |
1300 | for (Int_t i=0; i<15; i++) cov[i]=fIp->GetCovariance()[i]; | |
1301 | return kTRUE; | |
1302 | } | |
1303 | ||
1304 | void | |
1305 | AliESDtrack::SetOuterParam(const AliExternalTrackParam *p, ULong_t flags) { | |
1306 | // | |
1307 | // This is a direct setter for the outer track parameters | |
1308 | // | |
1309 | SetStatus(flags); | |
1310 | if (fOp) delete fOp; | |
1311 | fOp=new AliExternalTrackParam(*p); | |
1312 | } | |
1313 | ||
1314 | Bool_t | |
1315 | AliESDtrack::GetOuterExternalParameters | |
1316 | (Double_t &alpha, Double_t &x, Double_t p[5]) const { | |
1317 | //--------------------------------------------------------------------- | |
1318 | // This function returns external representation of the track parameters | |
1319 | // at the inner layer of TRD | |
1320 | //--------------------------------------------------------------------- | |
1321 | if (!fOp) return kFALSE; | |
1322 | alpha=fOp->GetAlpha(); | |
1323 | x=fOp->GetX(); | |
1324 | for (Int_t i=0; i<5; i++) p[i]=fOp->GetParameter()[i]; | |
1325 | return kTRUE; | |
1326 | } | |
1327 | ||
1328 | Bool_t | |
1329 | AliESDtrack::GetOuterExternalCovariance(Double_t cov[15]) const { | |
1330 | //--------------------------------------------------------------------- | |
1331 | // This function returns external representation of the cov. matrix | |
1332 | // at the inner layer of TRD | |
1333 | //--------------------------------------------------------------------- | |
1334 | if (!fOp) return kFALSE; | |
1335 | for (Int_t i=0; i<15; i++) cov[i]=fOp->GetCovariance()[i]; | |
1336 | return kTRUE; | |
1337 | } | |
1338 | ||
1339 | Int_t AliESDtrack::GetNcls(Int_t idet) const | |
1340 | { | |
1341 | // Get number of clusters by subdetector index | |
1342 | // | |
1343 | Int_t ncls = 0; | |
1344 | switch(idet){ | |
1345 | case 0: | |
1346 | ncls = fITSncls; | |
1347 | break; | |
1348 | case 1: | |
1349 | ncls = fTPCncls; | |
1350 | break; | |
1351 | case 2: | |
1352 | ncls = fTRDncls; | |
1353 | break; | |
1354 | case 3: | |
1355 | if (fTOFindex != -1) | |
1356 | ncls = 1; | |
1357 | break; | |
1358 | case 4: //PHOS | |
1359 | break; | |
1360 | case 5: //HMPID | |
1361 | if ((fHMPIDcluIdx >= 0) && (fHMPIDcluIdx < 7000000)) { | |
1362 | if ((fHMPIDcluIdx%1000000 != 9999) && (fHMPIDcluIdx%1000000 != 99999)) { | |
1363 | ncls = 1; | |
1364 | } | |
1365 | } | |
1366 | break; | |
1367 | default: | |
1368 | break; | |
1369 | } | |
1370 | return ncls; | |
1371 | } | |
1372 | ||
1373 | Int_t AliESDtrack::GetClusters(Int_t idet, Int_t *idx) const | |
1374 | { | |
1375 | // Get cluster index array by subdetector index | |
1376 | // | |
1377 | Int_t ncls = 0; | |
1378 | switch(idet){ | |
1379 | case 0: | |
1380 | ncls = GetITSclusters(idx); | |
1381 | break; | |
1382 | case 1: | |
1383 | ncls = GetTPCclusters(idx); | |
1384 | break; | |
1385 | case 2: | |
1386 | ncls = GetTRDclusters(idx); | |
1387 | break; | |
1388 | case 3: | |
1389 | if (fTOFindex != -1) { | |
1390 | idx[0] = fTOFindex; | |
1391 | ncls = 1; | |
1392 | } | |
1393 | break; | |
1394 | case 4: //PHOS | |
1395 | break; | |
1396 | case 5: | |
1397 | if ((fHMPIDcluIdx >= 0) && (fHMPIDcluIdx < 7000000)) { | |
1398 | if ((fHMPIDcluIdx%1000000 != 9999) && (fHMPIDcluIdx%1000000 != 99999)) { | |
1399 | idx[0] = GetHMPIDcluIdx(); | |
1400 | ncls = 1; | |
1401 | } | |
1402 | } | |
1403 | break; | |
1404 | case 6: //EMCAL | |
1405 | break; | |
1406 | default: | |
1407 | break; | |
1408 | } | |
1409 | return ncls; | |
1410 | } | |
1411 | ||
1412 | //_______________________________________________________________________ | |
1413 | void AliESDtrack::GetIntegratedTimes(Double_t *times) const { | |
1414 | // Returns the array with integrated times for each particle hypothesis | |
1415 | for (Int_t i=0; i<AliPID::kSPECIES; i++) times[i]=fTrackTime[i]; | |
1416 | } | |
1417 | ||
1418 | //_______________________________________________________________________ | |
1419 | void AliESDtrack::SetIntegratedTimes(const Double_t *times) { | |
1420 | // Sets the array with integrated times for each particle hypotesis | |
1421 | for (Int_t i=0; i<AliPID::kSPECIES; i++) fTrackTime[i]=times[i]; | |
1422 | } | |
1423 | ||
1424 | //_______________________________________________________________________ | |
1425 | void AliESDtrack::SetITSpid(const Double_t *p) { | |
1426 | // Sets values for the probability of each particle type (in ITS) | |
1427 | SetPIDValues(fITSr,p,AliPID::kSPECIES); | |
1428 | SetStatus(AliESDtrack::kITSpid); | |
1429 | } | |
1430 | ||
1431 | //_______________________________________________________________________ | |
1432 | void AliESDtrack::GetITSpid(Double_t *p) const { | |
1433 | // Gets the probability of each particle type (in ITS) | |
1434 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fITSr[i]; | |
1435 | } | |
1436 | ||
1437 | //_______________________________________________________________________ | |
1438 | Char_t AliESDtrack::GetITSclusters(Int_t *idx) const { | |
1439 | //--------------------------------------------------------------------- | |
1440 | // This function returns indices of the assgined ITS clusters | |
1441 | //--------------------------------------------------------------------- | |
1442 | if (idx!=0) { | |
1443 | Int_t *index=fFriendTrack->GetITSindices(); | |
1444 | for (Int_t i=0; i<AliESDfriendTrack::kMaxITScluster; i++) { | |
1445 | if ( (i>=fITSncls) && (i<6) ) idx[i]=-1; | |
1446 | else idx[i]=index[i]; | |
1447 | } | |
1448 | } | |
1449 | return fITSncls; | |
1450 | } | |
1451 | ||
1452 | //_______________________________________________________________________ | |
1453 | Bool_t AliESDtrack::GetITSModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status, | |
1454 | Float_t &xloc,Float_t &zloc) const { | |
1455 | //---------------------------------------------------------------------- | |
1456 | // This function encodes in the module number also the status of cluster association | |
1457 | // "status" can have the following values: | |
1458 | // 1 "found" (cluster is associated), | |
1459 | // 2 "dead" (module is dead from OCDB), | |
1460 | // 3 "skipped" (module or layer forced to be skipped), | |
1461 | // 4 "outinz" (track out of z acceptance), | |
1462 | // 5 "nocls" (no clusters in the road), | |
1463 | // 6 "norefit" (cluster rejected during refit), | |
1464 | // 7 "deadzspd" (holes in z in SPD) | |
1465 | // Also given are the coordinates of the crossing point of track and module | |
1466 | // (in the local module ref. system) | |
1467 | // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliITStrackV2::GetModuleIndexInfo()! | |
1468 | //---------------------------------------------------------------------- | |
1469 | ||
1470 | if(fITSModule[ilayer]==-1) { | |
1471 | idet = -1; | |
1472 | status=0; | |
1473 | xloc=-99.; zloc=-99.; | |
1474 | return kFALSE; | |
1475 | } | |
1476 | ||
1477 | Int_t module = fITSModule[ilayer]; | |
1478 | ||
1479 | idet = Int_t(module/1000000); | |
1480 | ||
1481 | module -= idet*1000000; | |
1482 | ||
1483 | status = Int_t(module/100000); | |
1484 | ||
1485 | module -= status*100000; | |
1486 | ||
1487 | Int_t signs = Int_t(module/10000); | |
1488 | ||
1489 | module-=signs*10000; | |
1490 | ||
1491 | Int_t xInt = Int_t(module/100); | |
1492 | module -= xInt*100; | |
1493 | ||
1494 | Int_t zInt = module; | |
1495 | ||
1496 | if(signs==1) { xInt*=1; zInt*=1; } | |
1497 | if(signs==2) { xInt*=1; zInt*=-1; } | |
1498 | if(signs==3) { xInt*=-1; zInt*=1; } | |
1499 | if(signs==4) { xInt*=-1; zInt*=-1; } | |
1500 | ||
1501 | xloc = 0.1*(Float_t)xInt; | |
1502 | zloc = 0.1*(Float_t)zInt; | |
1503 | ||
1504 | if(status==4) idet = -1; | |
1505 | ||
1506 | return kTRUE; | |
1507 | } | |
1508 | ||
1509 | //_______________________________________________________________________ | |
1510 | UShort_t AliESDtrack::GetTPCclusters(Int_t *idx) const { | |
1511 | //--------------------------------------------------------------------- | |
1512 | // This function returns indices of the assgined ITS clusters | |
1513 | //--------------------------------------------------------------------- | |
1514 | if (idx!=0) { | |
1515 | Int_t *index=fFriendTrack->GetTPCindices(); | |
1516 | for (Int_t i=0; i<AliESDfriendTrack::kMaxTPCcluster; i++) idx[i]=index[i]; | |
1517 | } | |
1518 | return fTPCncls; | |
1519 | } | |
1520 | ||
1521 | Double_t AliESDtrack::GetTPCdensity(Int_t row0, Int_t row1) const{ | |
1522 | // | |
1523 | // GetDensity of the clusters on given region between row0 and row1 | |
1524 | // Dead zone effect takin into acoount | |
1525 | // | |
1526 | Int_t good = 0; | |
1527 | Int_t found = 0; | |
1528 | // | |
1529 | Int_t *index=fFriendTrack->GetTPCindices(); | |
1530 | for (Int_t i=row0;i<=row1;i++){ | |
1531 | Int_t idx = index[i]; | |
1532 | if (idx!=-1) good++; // track outside of dead zone | |
1533 | if (idx>0) found++; | |
1534 | } | |
1535 | Float_t density=0.5; | |
1536 | if (good>(row1-row0)*0.5) density = Float_t(found)/Float_t(good); | |
1537 | return density; | |
1538 | } | |
1539 | ||
1540 | //_______________________________________________________________________ | |
1541 | void AliESDtrack::SetTPCpid(const Double_t *p) { | |
1542 | // Sets values for the probability of each particle type (in TPC) | |
1543 | SetPIDValues(fTPCr,p,AliPID::kSPECIES); | |
1544 | SetStatus(AliESDtrack::kTPCpid); | |
1545 | } | |
1546 | ||
1547 | //_______________________________________________________________________ | |
1548 | void AliESDtrack::GetTPCpid(Double_t *p) const { | |
1549 | // Gets the probability of each particle type (in TPC) | |
1550 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTPCr[i]; | |
1551 | } | |
1552 | ||
1553 | //_______________________________________________________________________ | |
1554 | UChar_t AliESDtrack::GetTRDclusters(Int_t *idx) const { | |
1555 | //--------------------------------------------------------------------- | |
1556 | // This function returns indices of the assgined TRD clusters | |
1557 | //--------------------------------------------------------------------- | |
1558 | if (idx!=0) { | |
1559 | Int_t *index=fFriendTrack->GetTRDindices(); | |
1560 | for (Int_t i=0; i<AliESDfriendTrack::kMaxTRDcluster; i++) idx[i]=index[i]; | |
1561 | } | |
1562 | return fTRDncls; | |
1563 | } | |
1564 | ||
1565 | //_______________________________________________________________________ | |
1566 | UChar_t AliESDtrack::GetTRDtracklets(Int_t *idx) const { | |
1567 | //--------------------------------------------------------------------- | |
1568 | // This function returns indices of the assigned TRD tracklets | |
1569 | //--------------------------------------------------------------------- | |
1570 | if (idx!=0) { | |
1571 | Int_t *index=fFriendTrack->GetTRDindices(); | |
1572 | for (Int_t i=0; i<6/*AliESDfriendTrack::kMaxTRDcluster*/; i++) idx[i]=index[i]; | |
1573 | } | |
1574 | return fTRDncls; | |
1575 | } | |
1576 | ||
1577 | //_______________________________________________________________________ | |
1578 | void AliESDtrack::SetTRDpid(const Double_t *p) { | |
1579 | // Sets values for the probability of each particle type (in TRD) | |
1580 | SetPIDValues(fTRDr,p,AliPID::kSPECIES); | |
1581 | SetStatus(AliESDtrack::kTRDpid); | |
1582 | } | |
1583 | ||
1584 | //_______________________________________________________________________ | |
1585 | void AliESDtrack::GetTRDpid(Double_t *p) const { | |
1586 | // Gets the probability of each particle type (in TRD) | |
1587 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTRDr[i]; | |
1588 | } | |
1589 | ||
1590 | //_______________________________________________________________________ | |
1591 | void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p) | |
1592 | { | |
1593 | // Sets the probability of particle type iSpecies to p (in TRD) | |
1594 | fTRDr[iSpecies] = p; | |
1595 | } | |
1596 | ||
1597 | Double_t AliESDtrack::GetTRDpid(Int_t iSpecies) const | |
1598 | { | |
1599 | // Returns the probability of particle type iSpecies (in TRD) | |
1600 | return fTRDr[iSpecies]; | |
1601 | } | |
1602 | ||
1603 | //____________________________________________________ | |
1604 | Int_t AliESDtrack::GetNumberOfTRDslices() const | |
1605 | { | |
1606 | // built in backward compatibility | |
1607 | Int_t idx = fTRDnSlices - (kTRDnPlanes<<1); | |
1608 | return idx<18 ? fTRDnSlices/kTRDnPlanes : idx/kTRDnPlanes; | |
1609 | } | |
1610 | ||
1611 | //____________________________________________________ | |
1612 | Double_t AliESDtrack::GetTRDmomentum(Int_t plane, Double_t *sp) const | |
1613 | { | |
1614 | //Returns momentum estimation and optional its error (sp) | |
1615 | // in TRD layer "plane". | |
1616 | ||
1617 | if (!fTRDnSlices) { | |
1618 | AliError("No TRD info allocated for this track !"); | |
1619 | return -1.; | |
1620 | } | |
1621 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
1622 | AliError("Info for TRD plane not available!"); | |
1623 | return -1.; | |
1624 | } | |
1625 | ||
1626 | Int_t idx = fTRDnSlices-(kTRDnPlanes<<1)+plane; | |
1627 | // Protection for backward compatibility | |
1628 | if(idx<(GetNumberOfTRDslices()*kTRDnPlanes)) return -1.; | |
1629 | ||
1630 | if(sp) (*sp) = fTRDslices[idx+kTRDnPlanes]; | |
1631 | return fTRDslices[idx]; | |
1632 | } | |
1633 | ||
1634 | //____________________________________________________ | |
1635 | Double_t AliESDtrack::GetTRDslice(Int_t plane, Int_t slice) const { | |
1636 | //Gets the charge from the slice of the plane | |
1637 | ||
1638 | if(!fTRDslices) { | |
1639 | //AliError("No TRD slices allocated for this track !"); | |
1640 | return -1.; | |
1641 | } | |
1642 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
1643 | AliError("Info for TRD plane not available !"); | |
1644 | return -1.; | |
1645 | } | |
1646 | Int_t ns=GetNumberOfTRDslices(); | |
1647 | if ((slice<-1) || (slice>=ns)) { | |
1648 | //AliError("Wrong TRD slice !"); | |
1649 | return -1.; | |
1650 | } | |
1651 | ||
1652 | if(slice>=0) return fTRDslices[plane*ns + slice]; | |
1653 | ||
1654 | // return average of the dEdx measurements | |
1655 | Double_t q=0.; Double32_t *s = &fTRDslices[plane*ns]; | |
1656 | for (Int_t i=0; i<ns; i++, s++) if((*s)>0.) q+=(*s); | |
1657 | return q/ns; | |
1658 | } | |
1659 | ||
1660 | //____________________________________________________ | |
1661 | void AliESDtrack::SetNumberOfTRDslices(Int_t n) { | |
1662 | //Sets the number of slices used for PID | |
1663 | if (fTRDnSlices) return; | |
1664 | ||
1665 | fTRDnSlices=n; | |
1666 | fTRDslices=new Double32_t[fTRDnSlices]; | |
1667 | ||
1668 | // set-up correctly the allocated memory | |
1669 | memset(fTRDslices, 0, n*sizeof(Double32_t)); | |
1670 | for (Int_t i=GetNumberOfTRDslices(); i--;) fTRDslices[i]=-1.; | |
1671 | } | |
1672 | ||
1673 | //____________________________________________________ | |
1674 | void AliESDtrack::SetTRDslice(Double_t q, Int_t plane, Int_t slice) { | |
1675 | //Sets the charge q in the slice of the plane | |
1676 | if(!fTRDslices) { | |
1677 | AliError("No TRD slices allocated for this track !"); | |
1678 | return; | |
1679 | } | |
1680 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
1681 | AliError("Info for TRD plane not allocated !"); | |
1682 | return; | |
1683 | } | |
1684 | Int_t ns=GetNumberOfTRDslices(); | |
1685 | if ((slice<0) || (slice>=ns)) { | |
1686 | AliError("Wrong TRD slice !"); | |
1687 | return; | |
1688 | } | |
1689 | Int_t n=plane*ns + slice; | |
1690 | fTRDslices[n]=q; | |
1691 | } | |
1692 | ||
1693 | ||
1694 | //____________________________________________________ | |
1695 | void AliESDtrack::SetTRDmomentum(Double_t p, Int_t plane, Double_t *sp) | |
1696 | { | |
1697 | if(!fTRDslices) { | |
1698 | AliError("No TRD slices allocated for this track !"); | |
1699 | return; | |
1700 | } | |
1701 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
1702 | AliError("Info for TRD plane not allocated !"); | |
1703 | return; | |
1704 | } | |
1705 | ||
1706 | Int_t idx = fTRDnSlices-(kTRDnPlanes<<1)+plane; | |
1707 | // Protection for backward compatibility | |
1708 | if(idx<GetNumberOfTRDslices()*kTRDnPlanes) return; | |
1709 | ||
1710 | if(sp) fTRDslices[idx+kTRDnPlanes] = (*sp); | |
1711 | fTRDslices[idx] = p; | |
1712 | } | |
1713 | ||
1714 | ||
1715 | //_______________________________________________________________________ | |
1716 | void AliESDtrack::SetTOFpid(const Double_t *p) { | |
1717 | // Sets the probability of each particle type (in TOF) | |
1718 | SetPIDValues(fTOFr,p,AliPID::kSPECIES); | |
1719 | SetStatus(AliESDtrack::kTOFpid); | |
1720 | } | |
1721 | ||
1722 | //_______________________________________________________________________ | |
1723 | void AliESDtrack::SetTOFLabel(const Int_t *p) { | |
1724 | // Sets (in TOF) | |
1725 | for (Int_t i=0; i<3; i++) fTOFLabel[i]=p[i]; | |
1726 | } | |
1727 | ||
1728 | //_______________________________________________________________________ | |
1729 | void AliESDtrack::GetTOFpid(Double_t *p) const { | |
1730 | // Gets probabilities of each particle type (in TOF) | |
1731 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTOFr[i]; | |
1732 | } | |
1733 | ||
1734 | //_______________________________________________________________________ | |
1735 | void AliESDtrack::GetTOFLabel(Int_t *p) const { | |
1736 | // Gets (in TOF) | |
1737 | for (Int_t i=0; i<3; i++) p[i]=fTOFLabel[i]; | |
1738 | } | |
1739 | ||
1740 | //_______________________________________________________________________ | |
1741 | void AliESDtrack::GetTOFInfo(Float_t *info) const { | |
1742 | // Gets (in TOF) | |
1743 | for (Int_t i=0; i<10; i++) info[i]=fTOFInfo[i]; | |
1744 | } | |
1745 | ||
1746 | //_______________________________________________________________________ | |
1747 | void AliESDtrack::SetTOFInfo(Float_t*info) { | |
1748 | // Gets (in TOF) | |
1749 | for (Int_t i=0; i<10; i++) fTOFInfo[i]=info[i]; | |
1750 | } | |
1751 | ||
1752 | ||
1753 | ||
1754 | //_______________________________________________________________________ | |
1755 | void AliESDtrack::SetHMPIDpid(const Double_t *p) { | |
1756 | // Sets the probability of each particle type (in HMPID) | |
1757 | SetPIDValues(fHMPIDr,p,AliPID::kSPECIES); | |
1758 | SetStatus(AliESDtrack::kHMPIDpid); | |
1759 | } | |
1760 | ||
1761 | //_______________________________________________________________________ | |
1762 | void AliESDtrack::GetHMPIDpid(Double_t *p) const { | |
1763 | // Gets probabilities of each particle type (in HMPID) | |
1764 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fHMPIDr[i]; | |
1765 | } | |
1766 | ||
1767 | ||
1768 | ||
1769 | //_______________________________________________________________________ | |
1770 | void AliESDtrack::SetESDpid(const Double_t *p) { | |
1771 | // Sets the probability of each particle type for the ESD track | |
1772 | SetPIDValues(fR,p,AliPID::kSPECIES); | |
1773 | SetStatus(AliESDtrack::kESDpid); | |
1774 | } | |
1775 | ||
1776 | //_______________________________________________________________________ | |
1777 | void AliESDtrack::GetESDpid(Double_t *p) const { | |
1778 | // Gets probability of each particle type for the ESD track | |
1779 | for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fR[i]; | |
1780 | } | |
1781 | ||
1782 | //_______________________________________________________________________ | |
1783 | Bool_t AliESDtrack::RelateToVertexTPC(const AliESDVertex *vtx, | |
1784 | Double_t b, Double_t maxd, AliExternalTrackParam *cParam) { | |
1785 | // | |
1786 | // Try to relate the TPC-only track parameters to the vertex "vtx", | |
1787 | // if the (rough) transverse impact parameter is not bigger then "maxd". | |
1788 | // Magnetic field is "b" (kG). | |
1789 | // | |
1790 | // a) The TPC-only paramters are extapolated to the DCA to the vertex. | |
1791 | // b) The impact parameters and their covariance matrix are calculated. | |
1792 | // c) An attempt to constrain the TPC-only params to the vertex is done. | |
1793 | // The constrained params are returned via "cParam". | |
1794 | // | |
1795 | // In the case of success, the returned value is kTRUE | |
1796 | // otherwise, it's kFALSE) | |
1797 | // | |
1798 | ||
1799 | if (!fTPCInner) return kFALSE; | |
1800 | if (!vtx) return kFALSE; | |
1801 | ||
1802 | Double_t dz[2],cov[3]; | |
1803 | if (!fTPCInner->PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE; | |
1804 | ||
1805 | fdTPC = dz[0]; | |
1806 | fzTPC = dz[1]; | |
1807 | fCddTPC = cov[0]; | |
1808 | fCdzTPC = cov[1]; | |
1809 | fCzzTPC = cov[2]; | |
1810 | ||
1811 | Double_t covar[6]; vtx->GetCovMatrix(covar); | |
1812 | Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]}; | |
1813 | Double_t c[3]={covar[2],0.,covar[5]}; | |
1814 | ||
1815 | Double_t chi2=GetPredictedChi2(p,c); | |
1816 | if (chi2>kVeryBig) return kFALSE; | |
1817 | ||
1818 | fCchi2TPC=chi2; | |
1819 | ||
1820 | if (!cParam) return kTRUE; | |
1821 | ||
1822 | *cParam = *fTPCInner; | |
1823 | if (!cParam->Update(p,c)) return kFALSE; | |
1824 | ||
1825 | return kTRUE; | |
1826 | } | |
1827 | ||
1828 | //_______________________________________________________________________ | |
1829 | Bool_t AliESDtrack::RelateToVertex(const AliESDVertex *vtx, | |
1830 | Double_t b, Double_t maxd, AliExternalTrackParam *cParam) { | |
1831 | // | |
1832 | // Try to relate this track to the vertex "vtx", | |
1833 | // if the (rough) transverse impact parameter is not bigger then "maxd". | |
1834 | // Magnetic field is "b" (kG). | |
1835 | // | |
1836 | // a) The track gets extapolated to the DCA to the vertex. | |
1837 | // b) The impact parameters and their covariance matrix are calculated. | |
1838 | // c) An attempt to constrain this track to the vertex is done. | |
1839 | // The constrained params are returned via "cParam". | |
1840 | // | |
1841 | // In the case of success, the returned value is kTRUE | |
1842 | // (otherwise, it's kFALSE) | |
1843 | // | |
1844 | ||
1845 | if (!vtx) return kFALSE; | |
1846 | ||
1847 | Double_t dz[2],cov[3]; | |
1848 | if (!PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE; | |
1849 | ||
1850 | fD = dz[0]; | |
1851 | fZ = dz[1]; | |
1852 | fCdd = cov[0]; | |
1853 | fCdz = cov[1]; | |
1854 | fCzz = cov[2]; | |
1855 | ||
1856 | Double_t covar[6]; vtx->GetCovMatrix(covar); | |
1857 | Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]}; | |
1858 | Double_t c[3]={covar[2],0.,covar[5]}; | |
1859 | ||
1860 | Double_t chi2=GetPredictedChi2(p,c); | |
1861 | if (chi2>kVeryBig) return kFALSE; | |
1862 | ||
1863 | fCchi2=chi2; | |
1864 | ||
1865 | ||
1866 | //--- Could now these lines be removed ? --- | |
1867 | delete fCp; | |
1868 | fCp=new AliExternalTrackParam(*this); | |
1869 | ||
1870 | if (!fCp->Update(p,c)) {delete fCp; fCp=0; return kFALSE;} | |
1871 | //---------------------------------------- | |
1872 | ||
1873 | fVertexID = vtx->GetID(); | |
1874 | ||
1875 | if (!cParam) return kTRUE; | |
1876 | ||
1877 | *cParam = *this; | |
1878 | if (!cParam->Update(p,c)) return kFALSE; | |
1879 | ||
1880 | return kTRUE; | |
1881 | } | |
1882 | ||
1883 | //_______________________________________________________________________ | |
1884 | void AliESDtrack::Print(Option_t *) const { | |
1885 | // Prints info on the track | |
1886 | AliExternalTrackParam::Print(); | |
1887 | printf("ESD track info\n") ; | |
1888 | Double_t p[AliPID::kSPECIESN] ; | |
1889 | Int_t index = 0 ; | |
1890 | if( IsOn(kITSpid) ){ | |
1891 | printf("From ITS: ") ; | |
1892 | GetITSpid(p) ; | |
1893 | for(index = 0 ; index < AliPID::kSPECIES; index++) | |
1894 | printf("%f, ", p[index]) ; | |
1895 | printf("\n signal = %f\n", GetITSsignal()) ; | |
1896 | } | |
1897 | if( IsOn(kTPCpid) ){ | |
1898 | printf("From TPC: ") ; | |
1899 | GetTPCpid(p) ; | |
1900 | for(index = 0 ; index < AliPID::kSPECIES; index++) | |
1901 | printf("%f, ", p[index]) ; | |
1902 | printf("\n signal = %f\n", GetTPCsignal()) ; | |
1903 | } | |
1904 | if( IsOn(kTRDpid) ){ | |
1905 | printf("From TRD: ") ; | |
1906 | GetTRDpid(p) ; | |
1907 | for(index = 0 ; index < AliPID::kSPECIES; index++) | |
1908 | printf("%f, ", p[index]) ; | |
1909 | printf("\n signal = %f\n", GetTRDsignal()) ; | |
1910 | } | |
1911 | if( IsOn(kTOFpid) ){ | |
1912 | printf("From TOF: ") ; | |
1913 | GetTOFpid(p) ; | |
1914 | for(index = 0 ; index < AliPID::kSPECIES; index++) | |
1915 | printf("%f, ", p[index]) ; | |
1916 | printf("\n signal = %f\n", GetTOFsignal()) ; | |
1917 | } | |
1918 | if( IsOn(kHMPIDpid) ){ | |
1919 | printf("From HMPID: ") ; | |
1920 | GetHMPIDpid(p) ; | |
1921 | for(index = 0 ; index < AliPID::kSPECIES; index++) | |
1922 | printf("%f, ", p[index]) ; | |
1923 | printf("\n signal = %f\n", GetHMPIDsignal()) ; | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | ||
1928 | // | |
1929 | // Draw functionality | |
1930 | // Origin: Marian Ivanov, Marian.Ivanov@cern.ch | |
1931 | // | |
1932 | void AliESDtrack::FillPolymarker(TPolyMarker3D *pol, Float_t magF, Float_t minR, Float_t maxR, Float_t stepR){ | |
1933 | // | |
1934 | // Fill points in the polymarker | |
1935 | // | |
1936 | TObjArray arrayRef; | |
1937 | arrayRef.AddLast(new AliExternalTrackParam(*this)); | |
1938 | if (fIp) arrayRef.AddLast(new AliExternalTrackParam(*fIp)); | |
1939 | if (fOp) arrayRef.AddLast(new AliExternalTrackParam(*fOp)); | |
1940 | // | |
1941 | Double_t mpos[3]={0,0,0}; | |
1942 | Int_t entries=arrayRef.GetEntries(); | |
1943 | for (Int_t i=0;i<entries;i++){ | |
1944 | Double_t pos[3]; | |
1945 | ((AliExternalTrackParam*)arrayRef.At(i))->GetXYZ(pos); | |
1946 | mpos[0]+=pos[0]/entries; | |
1947 | mpos[1]+=pos[1]/entries; | |
1948 | mpos[2]+=pos[2]/entries; | |
1949 | } | |
1950 | // Rotate to the mean position | |
1951 | // | |
1952 | Float_t fi= TMath::ATan2(mpos[1],mpos[0]); | |
1953 | for (Int_t i=0;i<entries;i++){ | |
1954 | Bool_t res = ((AliExternalTrackParam*)arrayRef.At(i))->Rotate(fi); | |
1955 | if (!res) delete arrayRef.RemoveAt(i); | |
1956 | } | |
1957 | Int_t counter=0; | |
1958 | for (Double_t r=minR; r<maxR; r+=stepR){ | |
1959 | Double_t sweight=0; | |
1960 | Double_t mlpos[3]={0,0,0}; | |
1961 | for (Int_t i=0;i<entries;i++){ | |
1962 | Double_t point[3]={0,0,0}; | |
1963 | AliExternalTrackParam *param = ((AliExternalTrackParam*)arrayRef.At(i)); | |
1964 | if (!param) continue; | |
1965 | if (param->GetXYZAt(r,magF,point)){ | |
1966 | Double_t weight = 1./(10.+(r-param->GetX())*(r-param->GetX())); | |
1967 | sweight+=weight; | |
1968 | mlpos[0]+=point[0]*weight; | |
1969 | mlpos[1]+=point[1]*weight; | |
1970 | mlpos[2]+=point[2]*weight; | |
1971 | } | |
1972 | } | |
1973 | if (sweight>0){ | |
1974 | mlpos[0]/=sweight; | |
1975 | mlpos[1]/=sweight; | |
1976 | mlpos[2]/=sweight; | |
1977 | pol->SetPoint(counter,mlpos[0],mlpos[1], mlpos[2]); | |
1978 | printf("xyz\t%f\t%f\t%f\n",mlpos[0], mlpos[1],mlpos[2]); | |
1979 | counter++; | |
1980 | } | |
1981 | } | |
1982 | } |