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d88fbf15 | 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 | // AliTOFtracker Class | |
16 | // Task: Perform association of the ESD tracks to TOF Clusters | |
17 | // and Update ESD track with associated TOF Cluster parameters | |
18 | // | |
19 | //-------------------------------------------------------------------- | |
20 | ||
21 | #include <Rtypes.h> | |
22 | #include "AliTOFtrackerMI.h" | |
23 | #include "AliTOFtrack.h" | |
24 | #include "TClonesArray.h" | |
25 | #include "TError.h" | |
26 | #include "AliTOFdigit.h" | |
27 | #include "AliTOFGeometry.h" | |
28 | #include "AliTOF.h" | |
29 | #include "AliRun.h" | |
30 | #include "AliModule.h" | |
31 | #include "TTreeStream.h" | |
32 | #include "AliTOFcluster.h" | |
33 | ||
34 | ClassImp(AliTOFtrackerMI) | |
35 | ||
36 | //_____________________________________________________________________________ | |
37 | AliTOFtrackerMI::AliTOFtrackerMI(AliTOFGeometry * geom, Double_t parPID[2]) { | |
38 | //AliTOFtrackerMI main Ctor | |
39 | ||
40 | fHoles=true; | |
41 | fNseeds=0; | |
42 | fNseedsTOF=0; | |
43 | fngoodmatch=0; | |
44 | fnbadmatch=0; | |
45 | fnunmatch=0; | |
46 | fnmatch=0; | |
47 | fGeom = geom; | |
48 | fTOFpid = new AliTOFpidESD(parPID); | |
49 | fR=378.; | |
50 | fTOFHeigth=15.3; | |
51 | fdCut=3.; | |
52 | fDy=AliTOFGeometry::XPad(); | |
53 | fDz=AliTOFGeometry::ZPad(); | |
54 | fDx=1.5; | |
55 | fSeeds=0x0; | |
56 | fTracks=0x0; | |
57 | fN=0; | |
58 | fDebugStreamer = new TTreeSRedirector("TOFdebug.root"); | |
59 | Init(); // temporary solution to know about Holes/no Holes | |
60 | } | |
61 | //_____________________________________________________________________________ | |
62 | AliTOFtrackerMI::AliTOFtrackerMI(const AliTOFtrackerMI &t):AliTracker() { | |
63 | //AliTOFtrackerMI copy Ctor | |
64 | ||
65 | fHoles=t.fHoles; | |
66 | fNseeds=t.fNseeds; | |
67 | fNseedsTOF=t.fNseedsTOF; | |
68 | fngoodmatch=t.fngoodmatch; | |
69 | fnbadmatch=t.fnbadmatch; | |
70 | fnunmatch=t.fnunmatch; | |
71 | fnmatch=t.fnmatch; | |
72 | fGeom = t.fGeom; | |
73 | fTOFpid = t.fTOFpid; | |
74 | fR=t.fR; | |
75 | fTOFHeigth=t.fTOFHeigth; | |
76 | fdCut=t.fdCut; | |
77 | fDy=t.fDy; | |
78 | fDz=t.fDz; | |
79 | fDx=1.5; | |
80 | fSeeds=t.fSeeds; | |
81 | fTracks=t.fTracks; | |
82 | fN=t.fN; | |
83 | } | |
84 | ||
85 | //_________________________________________________________________________________ | |
86 | AliTOFtrackerMI::~AliTOFtrackerMI(){ | |
87 | // | |
88 | // | |
89 | // | |
90 | if (fDebugStreamer) { | |
91 | //fDebugStreamer->Close(); | |
92 | delete fDebugStreamer; | |
93 | } | |
94 | delete fTOFpid; | |
95 | } | |
96 | ||
97 | //_____________________________________________________________________________ | |
98 | void AliTOFtrackerMI::Init() { | |
99 | ||
100 | // temporary solution to know about Holes/no Holes, will be implemented as | |
101 | // an AliTOFGeometry getter | |
102 | ||
103 | AliModule* frame=gAlice->GetModule("FRAME"); | |
104 | ||
105 | if(!frame) { | |
106 | Error("Init","Could Not load FRAME! Assume Frame with Holes \n"); | |
107 | fHoles=true; | |
108 | } else{ | |
109 | if(frame->IsVersion()==1) {fHoles=false;} | |
110 | else {fHoles=true;} | |
111 | } | |
112 | } | |
113 | //_____________________________________________________________________________ | |
114 | Int_t AliTOFtrackerMI::PropagateBack(AliESD* event) { | |
115 | // | |
116 | // Gets seeds from ESD event and Match with TOF Clusters | |
117 | // | |
118 | ||
119 | ||
120 | //Initialise some counters | |
121 | ||
122 | fNseeds=0; | |
123 | fNseedsTOF=0; | |
124 | fngoodmatch=0; | |
125 | fnbadmatch=0; | |
126 | fnunmatch=0; | |
127 | fnmatch=0; | |
128 | ||
129 | Int_t ntrk=event->GetNumberOfTracks(); | |
130 | fNseeds = ntrk; | |
131 | fSeeds= new TClonesArray("AliESDtrack"); | |
132 | TClonesArray &aESDTrack = *fSeeds; | |
133 | ||
134 | ||
135 | //Load ESD tracks into a local Array of ESD Seeds | |
136 | ||
137 | for (Int_t i=0; i<fNseeds; i++) { | |
138 | AliESDtrack *t=event->GetTrack(i); | |
139 | new(aESDTrack[i]) AliESDtrack(*t); | |
140 | } | |
141 | ||
142 | //Prepare ESD tracks candidates for TOF Matching | |
143 | CollectESD(); | |
144 | ||
145 | //First Step with Strict Matching Criterion | |
146 | //MatchTracks(kFALSE); | |
147 | ||
148 | //Second Step with Looser Matching Criterion | |
149 | //MatchTracks(kTRUE); | |
150 | MatchTracksMI(kFALSE); // assign track to clusters | |
151 | MatchTracksMI(kTRUE); // assign clusters to esd | |
152 | ||
153 | Info("PropagateBack","Number of matched tracks: %d",fnmatch); | |
154 | Info("PropagateBack","Number of good matched tracks: %d",fngoodmatch); | |
155 | Info("PropagateBack","Number of bad matched tracks: %d",fnbadmatch); | |
156 | ||
157 | //Update the matched ESD tracks | |
158 | ||
159 | for (Int_t i=0; i<ntrk; i++) { | |
160 | AliESDtrack *t=event->GetTrack(i); | |
161 | AliESDtrack *seed =(AliESDtrack*)fSeeds->UncheckedAt(i); | |
162 | if(seed->GetTOFsignal()>0){ | |
163 | t->SetTOFsignal(seed->GetTOFsignal()); | |
164 | t->SetTOFcluster(seed->GetTOFcluster()); | |
165 | Int_t tlab[3]; | |
166 | seed->GetTOFLabel(tlab); | |
167 | t->SetTOFLabel(tlab); | |
168 | AliTOFtrack *track = new AliTOFtrack(*seed); | |
169 | Float_t info[10]; | |
170 | Double_t times[10]; | |
171 | seed->GetTOFInfo(info); | |
172 | seed->GetIntegratedTimes(times); | |
173 | t->UpdateTrackParams(track,AliESDtrack::kTOFout); | |
174 | t->SetIntegratedLength(seed->GetIntegratedLength()); | |
175 | t->SetIntegratedTimes(times); | |
176 | // | |
177 | t->SetTOFInfo(info); | |
178 | delete track; | |
179 | } | |
180 | } | |
181 | ||
182 | ||
183 | //Make TOF PID | |
184 | fTOFpid->MakePID(event); | |
185 | ||
186 | if (fSeeds) { | |
187 | fSeeds->Delete(); | |
188 | delete fSeeds; | |
189 | fSeeds = 0x0; | |
190 | } | |
191 | if (fTracks) { | |
192 | fTracks->Delete(); | |
193 | delete fTracks; | |
194 | fTracks = 0x0; | |
195 | } | |
196 | return 0; | |
197 | ||
198 | } | |
199 | //_________________________________________________________________________ | |
200 | void AliTOFtrackerMI::CollectESD() { | |
201 | //prepare the set of ESD tracks to be matched to clusters in TOF | |
202 | ||
203 | fTracks= new TClonesArray("AliTOFtrack"); | |
204 | TClonesArray &aTOFTrack = *fTracks; | |
205 | Int_t c0=0; | |
206 | Int_t c1=0; | |
207 | for (Int_t i=0; i<fNseeds; i++) { | |
208 | ||
209 | AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(i); | |
210 | if ((t->GetStatus()&AliESDtrack::kTPCout)==0)continue; | |
211 | ||
212 | // TRD good tracks, already propagated at 371 cm | |
213 | ||
214 | AliTOFtrack *track = new AliTOFtrack(*t); // New | |
215 | Double_t x = track->GetX(); //New | |
216 | ||
217 | if (((t->GetStatus()&AliESDtrack::kTRDout)!=0 ) && | |
218 | ( x >= AliTOFGeometry::RinTOF()) ){ | |
219 | track->SetSeedIndex(i); | |
220 | t->UpdateTrackParams(track,AliESDtrack::kTOFout); | |
221 | new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track); | |
222 | fNseedsTOF++; | |
223 | c0++; | |
224 | delete track; | |
225 | } | |
226 | ||
227 | // Propagate the rest of TPCbp | |
228 | ||
229 | else { | |
230 | if(track->PropagateToInnerTOF(fHoles)){ // temporary solution | |
231 | // if(track->PropagateToInnerTOF(fGeom->GetHoles())){ | |
232 | track->SetSeedIndex(i); | |
233 | t->UpdateTrackParams(track,AliESDtrack::kTOFout); | |
234 | new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track); | |
235 | fNseedsTOF++; | |
236 | c1++; | |
237 | } | |
238 | delete track; | |
239 | } | |
240 | } | |
241 | // | |
242 | // | |
243 | printf("TRD\tOn\t%d\tOff\t%d\n",c0,c1); | |
244 | ||
245 | // Sort according uncertainties on track position | |
246 | fTracks->Sort(); | |
247 | ||
248 | } | |
249 | ||
250 | ||
251 | ||
252 | ||
253 | ||
254 | ||
255 | ||
256 | // | |
257 | // | |
258 | //_________________________________________________________________________ | |
259 | void AliTOFtrackerMI::MatchTracks( Bool_t /*mLastStep*/){ | |
260 | return; | |
261 | } | |
262 | // | |
263 | // | |
264 | //_________________________________________________________________________ | |
265 | void AliTOFtrackerMI::MatchTracksMI(Bool_t mLastStep){ | |
266 | ||
267 | //Match ESD tracks to clusters in TOF | |
268 | const Float_t kTofOffset = 26; // time offset | |
269 | const Float_t kMinQuality = -6.; // minimal quality | |
270 | const Float_t kMaxQualityD = 1.; // max delta quality if cluster used | |
271 | const Float_t kForbiddenR = 0.1; // minimal PID according TPC | |
272 | ||
273 | static const Double_t kMasses[]={ | |
274 | 0.000511, 0.105658, 0.139570, 0.493677, 0.938272, 1.875613 | |
275 | }; | |
276 | ||
277 | Int_t nSteps=(Int_t)(fTOFHeigth/0.1); | |
278 | ||
279 | //PH Arrays (moved outside of the loop) | |
280 | Float_t * trackPos[4]; | |
281 | for (Int_t ii=0; ii<4; ii++) trackPos[ii] = new Float_t[nSteps]; | |
282 | Int_t * clind[6]; | |
283 | for (Int_t ii=0;ii<6;ii++) clind[ii] = new Int_t[fN]; | |
284 | ||
285 | // Some init | |
286 | ||
287 | Int_t index[1000]; | |
288 | Float_t dist3D[1000][6]; | |
289 | Double_t times[1000][6]; | |
290 | Float_t mintimedist[1000]; | |
291 | Float_t likelihood[1000]; | |
292 | Float_t length[1000]; | |
293 | AliTOFcluster *clusters[1000]; | |
294 | Double_t tpcpid[5]; | |
295 | dist3D[0][0]=1; | |
296 | ||
297 | for (Int_t i=0; i<fNseedsTOF; i++) { | |
298 | ||
299 | AliTOFtrack *track =(AliTOFtrack*)fTracks->UncheckedAt(i); | |
300 | AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(track->GetSeedIndex()); | |
301 | Bool_t hasTime = ( (t->GetStatus()& AliESDtrack::kTIME)>0) ? kTRUE:kFALSE; // did we integrate time | |
302 | Float_t trdquality = t->GetTRDQuality(); | |
303 | // | |
304 | // Normalize tpc pid | |
305 | // | |
306 | t->GetTPCpid(tpcpid); | |
307 | Double_t sumpid=0; | |
308 | for (Int_t ipid=0;ipid<5;ipid++){ | |
309 | sumpid+=tpcpid[ipid]; | |
310 | } | |
311 | for (Int_t ipid=0;ipid<5;ipid++){ | |
312 | if (sumpid>0) tpcpid[ipid]/=sumpid; | |
313 | else{ | |
314 | tpcpid[ipid]=0.2; | |
315 | } | |
316 | } | |
317 | ||
318 | if (trdquality<0) continue; // no chance | |
319 | // | |
320 | AliTOFtrack *trackTOFin =new AliTOFtrack(*track); | |
321 | // | |
322 | //propagat track to the middle of TOF | |
323 | // | |
324 | Float_t xs = 378.2; // should be defined in the TOF gemotry | |
325 | Double_t ymax=xs*TMath::Tan(0.5*AliTOFGeometry::GetAlpha()); | |
326 | Bool_t skip; | |
327 | Double_t ysect=trackTOFin->GetYat(xs,skip); | |
328 | if (skip){ | |
329 | xs = 372.; | |
330 | ymax=xs*TMath::Tan(0.5*AliTOFGeometry::GetAlpha()); | |
331 | ysect=trackTOFin->GetYat(xs,skip); | |
332 | } | |
333 | if (ysect > ymax) { | |
334 | if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) { | |
335 | continue; | |
336 | } | |
337 | } else if (ysect <-ymax) { | |
338 | if (!trackTOFin->Rotate(-AliTOFGeometry::GetAlpha())) { | |
339 | continue; | |
340 | } | |
341 | } | |
342 | if(!trackTOFin->PropagateTo(xs)) { | |
343 | continue; | |
344 | } | |
345 | // | |
346 | // Determine a window around the track | |
347 | // | |
348 | Double_t x,par[5]; | |
349 | trackTOFin->GetExternalParameters(x,par); | |
350 | Double_t cov[15]; | |
351 | trackTOFin->GetExternalCovariance(cov); | |
352 | Float_t scalefact=3.; | |
353 | Double_t dphi= | |
354 | scalefact* | |
355 | ((5*TMath::Sqrt(cov[0]) + 3.*fDy +10.*TMath::Abs(par[2]))/fR); | |
356 | Double_t dz= | |
357 | scalefact* | |
358 | (5*TMath::Sqrt(cov[2]) + 3.*fDz +10.*TMath::Abs(par[3])); | |
359 | ||
360 | Double_t phi=TMath::ATan2(par[0],x) + trackTOFin->GetAlpha(); | |
361 | if (phi<-TMath::Pi())phi+=2*TMath::Pi(); | |
362 | if (phi>=TMath::Pi())phi-=2*TMath::Pi(); | |
363 | Double_t z=par[1]; | |
364 | ||
365 | Int_t nc =0; | |
366 | Int_t nfound =0; | |
367 | // find the clusters in the window of the track | |
368 | ||
369 | for (Int_t k=FindClusterIndex(z-dz); k<fN; k++) { | |
370 | AliTOFcluster *c=fClusters[k]; | |
371 | if (c->GetZ() > z+dz) break; | |
372 | // if (c->IsUsed()) continue; | |
373 | ||
374 | Double_t dph=TMath::Abs(c->GetPhi()-phi); | |
375 | if (dph>TMath::Pi()) dph-=2.*TMath::Pi(); | |
376 | if (TMath::Abs(dph)>dphi) continue; | |
377 | ||
378 | clind[0][nc] = c->GetDetInd(0); | |
379 | clind[1][nc] = c->GetDetInd(1); | |
380 | clind[2][nc] = c->GetDetInd(2); | |
381 | clind[3][nc] = c->GetDetInd(3); | |
382 | clind[4][nc] = c->GetDetInd(4); | |
383 | clind[5][nc] = k; | |
384 | nc++; | |
385 | } | |
386 | ||
387 | // | |
388 | // select close clusters | |
389 | // | |
390 | Double_t mom=t->GetP(); | |
391 | // Bool_t dump = kTRUE; | |
392 | for (Int_t icl=0; icl<nc; icl++){ | |
393 | Float_t distances[5]; | |
394 | if (nfound>=1000) break; | |
395 | index[nfound]=clind[5][icl]; | |
396 | AliTOFcluster *cluster = fClusters[clind[5][icl]]; | |
397 | GetLinearDistances(trackTOFin,cluster, distances); | |
398 | dist3D[nfound][0] = distances[4]; | |
399 | dist3D[nfound][1] = distances[1]; | |
400 | dist3D[nfound][2] = distances[2]; | |
401 | // cut on distance | |
402 | if (TMath::Abs(dist3D[nfound][1])>20 || TMath::Abs(dist3D[nfound][2])>20) continue; | |
403 | // | |
404 | GetLikelihood(distances[1],distances[2],cov,trackTOFin, dist3D[nfound][3], dist3D[nfound][4]); | |
405 | // | |
406 | // cut on likelihood | |
407 | if (dist3D[nfound][3]*dist3D[nfound][4]<0.00000000000001) continue; // log likelihood | |
408 | if (TMath::Log(dist3D[nfound][3]*dist3D[nfound][4])<-9) continue; // log likelihood | |
409 | // | |
410 | clusters[nfound] = cluster; | |
411 | // | |
412 | //length and TOF updates | |
413 | trackTOFin->GetIntegratedTimes(times[nfound]); | |
414 | length[nfound] = trackTOFin->GetIntegratedLength(); | |
415 | length[nfound]+=distances[4]; | |
416 | mintimedist[nfound]=1000; | |
417 | Double_t tof2=AliTOFGeometry::TdcBinWidth()*cluster->GetTDC()+kTofOffset; // in ps | |
418 | // Float_t tgamma = TMath::Sqrt(cluster->GetR()*cluster->GetR()+cluster->GetZ()*cluster->GetZ())/0.03; //time for "primary" gamma | |
419 | //if (trackTOFin->GetPt()<0.7 && TMath::Abs(tgamma-tof2)<350) continue; // gamma conversion candidate - TEMPORARY | |
420 | for(Int_t j=0;j<=5;j++){ | |
421 | Double_t mass=kMasses[j]; | |
422 | times[nfound][j]+=distances[4]/3e-2*TMath::Sqrt(mom*mom+mass*mass)/mom; // add time distance | |
423 | if ( TMath::Abs(times[nfound][j]-tof2)<mintimedist[nfound] && tpcpid[j]>kForbiddenR){ | |
424 | mintimedist[nfound]=TMath::Abs(times[nfound][j]-tof2); | |
425 | } | |
426 | } | |
427 | // | |
428 | Float_t liketime = TMath::Exp(-mintimedist[nfound]/90.)+0.25*TMath::Exp(-mintimedist[nfound]/180.); | |
429 | if (!hasTime) liketime=0.2; | |
430 | likelihood[nfound] = TMath::Log(dist3D[nfound][3]*dist3D[nfound][4]*liketime); | |
431 | ||
432 | if (TMath::Log(dist3D[nfound][3]*dist3D[nfound][4])<-1){ | |
433 | if (likelihood[nfound]<-9.) continue; | |
434 | } | |
435 | // | |
436 | nfound++; | |
437 | } | |
438 | if (nfound == 0 ) { | |
439 | fnunmatch++; | |
440 | delete trackTOFin; | |
441 | continue; | |
442 | } | |
443 | // | |
444 | //choose the best cluster | |
445 | // | |
446 | Float_t quality[1000]; | |
447 | Int_t index[1000]; | |
448 | // | |
449 | AliTOFcluster * cgold=0; | |
450 | Int_t igold =-1; | |
451 | for (Int_t icl=0;icl<nfound;icl++){ | |
452 | quality[icl] = dist3D[icl][3]*dist3D[icl][4]; | |
453 | } | |
454 | TMath::Sort(nfound,quality,index,kTRUE); | |
455 | igold = index[0]; | |
456 | cgold = clusters[igold]; | |
457 | if (nfound>1 &&likelihood[index[1]]>likelihood[index[0]]){ | |
458 | if ( quality[index[0]]<quality[index[1]]+0.5){ | |
459 | igold = index[1]; | |
460 | cgold = clusters[igold]; | |
461 | } | |
462 | } | |
463 | // | |
464 | // | |
465 | Float_t qualityGold = TMath::Log(0.0000001+(quality[igold]*(0.1+TMath::Exp(-mintimedist[igold]/80.))*(0.2+trdquality))); | |
466 | if (!mLastStep){ | |
467 | if (cgold->GetQuality()<qualityGold) cgold->SetQuality(qualityGold); | |
468 | continue; | |
469 | } | |
470 | // | |
471 | if (mLastStep){ | |
472 | //signed better cluster | |
473 | if (cgold->GetQuality()>qualityGold+kMaxQualityD) continue; | |
474 | if (2.*qualityGold-cgold->GetQuality()<kMinQuality) continue; | |
475 | } | |
476 | ||
477 | Int_t inonfake=-1; | |
478 | ||
479 | for (Int_t icl=0;icl<nfound;icl++){ | |
480 | if ( | |
481 | (clusters[index[icl]]->GetLabel(0)==TMath::Abs(trackTOFin->GetLabel())) | |
482 | || | |
483 | (clusters[index[icl]]->GetLabel(1)==TMath::Abs(trackTOFin->GetLabel())) | |
484 | || | |
485 | (clusters[index[icl]]->GetLabel(2)==TMath::Abs(trackTOFin->GetLabel())) | |
486 | ) { | |
487 | inonfake = icl; | |
488 | break; | |
489 | } | |
490 | } | |
491 | fnmatch++;; | |
492 | if (inonfake==0) fngoodmatch++; | |
493 | else{ | |
494 | fnbadmatch++; | |
495 | } | |
496 | ||
497 | Int_t tlab[3]; | |
498 | tlab[0]=cgold->GetLabel(0); | |
499 | tlab[1]=cgold->GetLabel(1); | |
500 | tlab[2]=cgold->GetLabel(2); | |
501 | // Double_t tof2=25.*cgold->GetTDC()-350; // in ps | |
502 | Double_t tof2=AliTOFGeometry::TdcBinWidth()*cgold->GetTDC()+kTofOffset; // in ps | |
503 | Float_t tgamma = TMath::Sqrt(cgold->GetR()*cgold->GetR()+cgold->GetZ()*cgold->GetZ())/0.03; | |
504 | Float_t info[11]={dist3D[igold][0],dist3D[igold][1],dist3D[igold][2],dist3D[igold][3],dist3D[igold][4],mintimedist[igold], | |
505 | -1,tgamma, qualityGold,cgold->GetQuality(),0}; | |
506 | // GetLinearDistances(trackTOFin,cgold,&info[6]); | |
507 | if (inonfake>=0){ | |
508 | info[6] = inonfake; | |
509 | // info[7] = mintimedist[index[inonfake]]; | |
510 | } | |
511 | // | |
512 | t->SetTOFInfo(info); | |
513 | t->SetTOFsignal(tof2); | |
514 | t->SetTOFcluster(cgold->GetIndex()); | |
515 | AliTOFtrack *trackTOFout = new AliTOFtrack(*t); | |
516 | trackTOFout->PropagateTo(378.); | |
517 | t->UpdateTrackParams(trackTOFout,AliESDtrack::kTOFout); | |
518 | t->SetIntegratedLength(length[igold]); | |
519 | t->SetIntegratedTimes(times[igold]); | |
520 | t->SetTOFLabel(tlab); | |
521 | // | |
522 | delete trackTOFin; | |
523 | delete trackTOFout; | |
524 | // | |
525 | } | |
526 | // | |
527 | // | |
528 | // | |
529 | for (Int_t ii=0; ii<4; ii++) delete [] trackPos[ii]; | |
530 | for (Int_t ii=0;ii<6;ii++) delete [] clind[ii]; | |
531 | } | |
532 | ||
533 | ||
534 | ||
535 | ||
536 | // //_________________________________________________________________________ | |
537 | // Int_t AliTOFtrackerMI::LoadClusters(TTree *dTree) { | |
538 | // //-------------------------------------------------------------------- | |
539 | // //This function loads the TOF clusters | |
540 | // //-------------------------------------------------------------------- | |
541 | ||
542 | // TBranch *branch=dTree->GetBranch("TOF"); | |
543 | // if (!branch) { | |
544 | // Error("LoadClusters"," can't get the branch with the TOF digits !\n"); | |
545 | // return 1; | |
546 | // } | |
547 | ||
548 | // TClonesArray dummy("AliTOFdigit",10000), *digits=&dummy; | |
549 | // branch->SetAddress(&digits); | |
550 | ||
551 | // dTree->GetEvent(0); | |
552 | // Int_t nd=digits->GetEntriesFast(); | |
553 | // Info("LoadClusters","number of digits: %d",nd); | |
554 | ||
555 | // for (Int_t i=0; i<nd; i++) { | |
556 | // AliTOFdigit *d=(AliTOFdigit*)digits->UncheckedAt(i); | |
557 | // Int_t dig[5]; Float_t g[3]; | |
558 | // dig[0]=d->GetSector(); | |
559 | // dig[1]=d->GetPlate(); | |
560 | // dig[2]=d->GetStrip(); | |
561 | // dig[3]=d->GetPadz(); | |
562 | // dig[4]=d->GetPadx(); | |
563 | ||
564 | // fGeom->GetPos(dig,g); | |
565 | ||
566 | // Double_t h[5]; | |
567 | // h[0]=TMath::Sqrt(g[0]*g[0]+g[1]*g[1]); | |
568 | // h[1]=TMath::ATan2(g[1],g[0]); h[2]=g[2]; | |
569 | // h[3]=d->GetTdc(); h[4]=d->GetAdc(); | |
570 | ||
571 | // AliTOFcluster *cl=new AliTOFcluster(h,d->GetTracks(),dig,i); | |
572 | // InsertCluster(cl); | |
573 | // } | |
574 | ||
575 | // return 0; | |
576 | // } | |
577 | // //_________________________________________________________________________ | |
578 | // void AliTOFtrackerMI::UnloadClusters() { | |
579 | // //-------------------------------------------------------------------- | |
580 | // //This function unloads TOF clusters | |
581 | // //-------------------------------------------------------------------- | |
582 | // for (Int_t i=0; i<fN; i++) delete fClusters[i]; | |
583 | // fN=0; | |
584 | // } | |
585 | ||
586 | ||
587 | ||
588 | //_________________________________________________________________________ | |
589 | Int_t AliTOFtrackerMI::LoadClusters(TTree *cTree) { | |
590 | //-------------------------------------------------------------------- | |
591 | //This function loads the TOF clusters | |
592 | //-------------------------------------------------------------------- | |
593 | ||
594 | TBranch *branch=cTree->GetBranch("TOF"); | |
595 | if (!branch) { | |
596 | AliError("can't get the branch with the TOF clusters !"); | |
597 | return 1; | |
598 | } | |
599 | ||
600 | TClonesArray dummy("AliTOFcluster",10000), *clusters=&dummy; | |
601 | branch->SetAddress(&clusters); | |
602 | ||
603 | cTree->GetEvent(0); | |
604 | Int_t nc=clusters->GetEntriesFast(); | |
605 | AliInfo(Form("Number of clusters: %d",nc)); | |
606 | ||
607 | for (Int_t i=0; i<nc; i++) { | |
608 | AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i); | |
609 | /* | |
610 | for (Int_t jj=0; jj<5; jj++) dig[jj]=c->GetDetInd(jj); | |
611 | ||
612 | Double_t h[5]; | |
613 | h[0]=c->GetR(); | |
614 | h[1]=c->GetPhi(); | |
615 | h[2]=c->GetZ(); | |
616 | h[3]=c->GetTDC(); | |
617 | h[4]=c->GetADC(); | |
618 | ||
619 | Int_t indexDig[3]; | |
620 | for (Int_t jj=0; jj<3; jj++) indexDig[jj] = c->GetLabel(jj); | |
621 | ||
622 | AliTOFcluster *cl=new AliTOFcluster(h,c->GetTracks(),dig,i); | |
623 | */ | |
624 | ||
625 | // fClusters[i]=c; fN++; | |
626 | fClusters[i]=new AliTOFcluster(*c); fN++; | |
627 | ||
628 | //AliInfo(Form("%4i %4i %f %f %f %f %f %2i %1i %2i %1i %2i",i, fClusters[i]->GetIndex(),fClusters[i]->GetZ(),fClusters[i]->GetR(),fClusters[i]->GetPhi(), fClusters[i]->GetTDC(),fClusters[i]->GetADC(),fClusters[i]->GetDetInd(0),fClusters[i]->GetDetInd(1),fClusters[i]->GetDetInd(2),fClusters[i]->GetDetInd(3),fClusters[i]->GetDetInd(4))); | |
629 | //AliInfo(Form("%i %f",i, fClusters[i]->GetZ())); | |
630 | } | |
631 | ||
632 | //AliInfo(Form("Number of clusters: %d",fN)); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | //_________________________________________________________________________ | |
637 | void AliTOFtrackerMI::UnloadClusters() { | |
638 | //-------------------------------------------------------------------- | |
639 | //This function unloads TOF clusters | |
640 | //-------------------------------------------------------------------- | |
641 | for (Int_t i=0; i<fN; i++) { | |
642 | delete fClusters[i]; | |
643 | fClusters[i] = 0x0; | |
644 | } | |
645 | fN=0; | |
646 | } | |
647 | ||
648 | ||
649 | ||
650 | ||
651 | //_________________________________________________________________________ | |
652 | Int_t AliTOFtrackerMI::InsertCluster(AliTOFcluster *c) { | |
653 | //-------------------------------------------------------------------- | |
654 | //This function adds a cluster to the array of clusters sorted in Z | |
655 | //-------------------------------------------------------------------- | |
656 | if (fN==kMaxCluster) { | |
657 | Error("InsertCluster","Too many clusters !\n"); | |
658 | return 1; | |
659 | } | |
660 | ||
661 | if (fN==0) {fClusters[fN++]=c; return 0;} | |
662 | Int_t i=FindClusterIndex(c->GetZ()); | |
663 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTOFcluster*)); | |
664 | fClusters[i]=c; fN++; | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
669 | //_________________________________________________________________________ | |
670 | Int_t AliTOFtrackerMI::FindClusterIndex(Double_t z) const { | |
671 | //-------------------------------------------------------------------- | |
672 | // This function returns the index of the nearest cluster | |
673 | //-------------------------------------------------------------------- | |
674 | if (fN==0) return 0; | |
675 | if (z <= fClusters[0]->GetZ()) return 0; | |
676 | if (z > fClusters[fN-1]->GetZ()) return fN; | |
677 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
678 | for (; b<e; m=(b+e)/2) { | |
679 | if (z > fClusters[m]->GetZ()) b=m+1; | |
680 | else e=m; | |
681 | } | |
682 | return m; | |
683 | } | |
684 | ||
685 | ||
686 | ||
687 | Float_t AliTOFtrackerMI::GetLinearDistances(AliTOFtrack * track, AliTOFcluster *cluster, Float_t distances[5]) | |
688 | { | |
689 | // | |
690 | // calclates distance between cluster and track | |
691 | // use linear aproximation | |
692 | // | |
693 | const Float_t kRaddeg = 180/3.14159265358979312; | |
694 | // | |
695 | // Float_t tiltangle = fGeom->GetAngles(cluster->fdetIndex[1],cluster->fdetIndex[2])/kRaddeg; //tiltangle | |
696 | Int_t cind[5]; | |
697 | cind[0]= cluster->GetDetInd(0); | |
698 | cind[1]= cluster->GetDetInd(1); | |
699 | cind[2]= cluster->GetDetInd(2); | |
700 | cind[3]= cluster->GetDetInd(3); | |
701 | cind[4]= cluster->GetDetInd(4); | |
702 | Float_t tiltangle = fGeom->GetAngles(cluster->GetDetInd(1),cluster->GetDetInd(2))/kRaddeg; //tiltangle | |
703 | ||
704 | Float_t cpos[3]; //cluster position | |
705 | Float_t cpos0[3]; //cluster position | |
706 | // fGeom->GetPos(cluster->fdetIndex,cpos); | |
707 | //fGeom->GetPos(cluster->fdetIndex,cpos0); | |
708 | // | |
709 | fGeom->GetPos(cind,cpos); | |
710 | fGeom->GetPos(cind,cpos0); | |
711 | ||
712 | Float_t phi = TMath::ATan2(cpos[1],cpos[0]); | |
713 | if(phi<0) phi=2.*TMath::Pi()+phi; | |
714 | // Get the local angle in the sector philoc | |
715 | Float_t phiangle = (Int_t (phi*kRaddeg/20.) + 0.5)*20./kRaddeg; | |
716 | // | |
717 | Double_t v0[3]; | |
718 | Double_t dir[3]; | |
719 | track->GetGlobalXYZ(v0[0],v0[1],v0[2]); | |
720 | track->GetPxPyPz(dir[0],dir[1],dir[2]); | |
721 | dir[0]/=track->GetP(); | |
722 | dir[1]/=track->GetP(); | |
723 | dir[2]/=track->GetP(); | |
724 | // | |
725 | // | |
726 | //rotate 0 | |
727 | Float_t sinphi = TMath::Sin(phiangle); | |
728 | Float_t cosphi = TMath::Cos(phiangle); | |
729 | Float_t sinth = TMath::Sin(tiltangle); | |
730 | Float_t costh = TMath::Cos(tiltangle); | |
731 | // | |
732 | Float_t temp; | |
733 | temp = cpos[0]*cosphi+cpos[1]*sinphi; | |
734 | cpos[1] = -cpos[0]*sinphi+cpos[1]*cosphi; | |
735 | cpos[0] = temp; | |
736 | temp = v0[0]*cosphi+v0[1]*sinphi; | |
737 | v0[1] = -v0[0]*sinphi+v0[1]*cosphi; | |
738 | v0[0] = temp; | |
739 | // | |
740 | temp = cpos[0]*costh+cpos[2]*sinth; | |
741 | cpos[2] = -cpos[0]*sinth+cpos[2]*costh; | |
742 | cpos[0] = temp; | |
743 | temp = v0[0]*costh+v0[2]*sinth; | |
744 | v0[2] = -v0[0]*sinth+v0[2]*costh; | |
745 | v0[0] = temp; | |
746 | // | |
747 | // | |
748 | //rotate direction vector | |
749 | // | |
750 | temp = dir[0]*cosphi+dir[1]*sinphi; | |
751 | dir[1] = -dir[0]*sinphi+dir[1]*cosphi; | |
752 | dir[0] = temp; | |
753 | // | |
754 | temp = dir[0]*costh+dir[2]*sinth; | |
755 | dir[2] = -dir[0]*sinth+dir[2]*costh; | |
756 | dir[0] = temp; | |
757 | // | |
758 | Float_t v3[3]; | |
759 | Float_t k = (cpos[0]-v0[0])/dir[0]; | |
760 | v3[0] = v0[0]+k*dir[0]; | |
761 | v3[1] = v0[1]+k*dir[1]; | |
762 | v3[2] = v0[2]+k*dir[2]; | |
763 | // | |
764 | distances[0] = v3[0]-cpos[0]; | |
765 | distances[1] = v3[1]-cpos[1]; | |
766 | distances[2] = v3[2]-cpos[2]; | |
767 | distances[3] = TMath::Sqrt( distances[0]*distances[0]+distances[1]*distances[1]+distances[2]*distances[2]); //distance | |
768 | distances[4] = k; //length | |
769 | ||
770 | // | |
771 | // Debuging part of the matching | |
772 | // | |
773 | if (track->GetLabel()==cluster->GetLabel(0) ||track->GetLabel()==cluster->GetLabel(1) ){ | |
774 | TTreeSRedirector& cstream = *fDebugStreamer; | |
775 | Float_t tdc = cluster->GetTDC(); | |
776 | cstream<<"Tracks"<< | |
777 | "TOF.="<<track<< | |
778 | "Cx="<<cpos0[0]<< | |
779 | "Cy="<<cpos0[1]<< | |
780 | "Cz="<<cpos0[2]<< | |
781 | "Dist="<<k<< | |
782 | "Dist0="<<distances[0]<< | |
783 | "Dist1="<<distances[1]<< | |
784 | "Dist2="<<distances[2]<< | |
785 | "TDC="<<tdc<< | |
786 | "\n"; | |
787 | } | |
788 | return distances[3]; | |
789 | } | |
790 | ||
791 | ||
792 | ||
793 | void AliTOFtrackerMI::GetLikelihood(Float_t dy, Float_t dz, const Double_t *cov, AliTOFtrack * /*track*/, Float_t & py, Float_t &pz) | |
794 | { | |
795 | // | |
796 | // get likelihood - track covariance taken | |
797 | // 75 % of gauss with expected sigma | |
798 | // 25 % of gauss with extended sigma | |
799 | ||
800 | Double_t kMaxSigmaY = 0.6; // ~ 90% of TRD tracks | |
801 | Double_t kMaxSigmaZ = 1.2; // ~ 90% of TRD tracks | |
802 | Double_t kMeanSigmaY = 0.25; // mean TRD sigma | |
803 | Double_t kMeanSigmaZ = 0.5; // mean TRD sigma | |
804 | ||
805 | ||
806 | Float_t normwidth, normd, p0,p1; | |
807 | Float_t sigmay = TMath::Max(TMath::Sqrt(cov[0]+kMeanSigmaY*kMeanSigmaY),kMaxSigmaY); | |
808 | Float_t sigmaz = TMath::Max(TMath::Sqrt(cov[2]+kMeanSigmaZ*kMeanSigmaZ),kMaxSigmaZ); | |
809 | ||
810 | py=0; | |
811 | pz=0; | |
812 | // | |
813 | // py calculation - 75% admixture of original sigma - 25% tails | |
814 | // | |
815 | normwidth = fDy/sigmay; | |
816 | normd = dy/sigmay; | |
817 | p0 = 0.5*(1+TMath::Erf(normd-normwidth*0.5)); | |
818 | p1 = 0.5*(1+TMath::Erf(normd+normwidth*0.5)); | |
819 | py+= 0.75*(p1-p0); | |
820 | // | |
821 | normwidth = fDy/(3.*sigmay); | |
822 | normd = dy/(3.*sigmay); | |
823 | p0 = 0.5*(1+TMath::Erf(normd-normwidth*0.5)); | |
824 | p1 = 0.5*(1+TMath::Erf(normd+normwidth*0.5)); | |
825 | py+= 0.25*(p1-p0); | |
826 | // | |
827 | // pz calculation - 75% admixture of original sigma - 25% tails | |
828 | // | |
829 | normwidth = fDz/sigmaz; | |
830 | normd = dz/sigmaz; | |
831 | p0 = 0.5*(1+TMath::Erf(normd-normwidth*0.5)); | |
832 | p1 = 0.5*(1+TMath::Erf(normd+normwidth*0.5)); | |
833 | pz+= 0.75*(p1-p0); | |
834 | // | |
835 | normwidth = fDz/(3.*sigmaz); | |
836 | normd = dz/(3.*sigmaz); | |
837 | p0 = 0.5*(1+TMath::Erf(normd-normwidth*0.5)); | |
838 | p1 = 0.5*(1+TMath::Erf(normd+normwidth*0.5)); | |
839 | pz+= 0.25*(p1-p0); | |
840 | } |