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46d29e70 | 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 | ||
0fa7dfa7 | 16 | /* $Id$ */ |
bbf92647 | 17 | |
029cd327 | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // The standard TRD tracker // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
a2cb5b3d | 24 | #include <Riostream.h> |
46d29e70 | 25 | #include <TFile.h> |
46d29e70 | 26 | #include <TBranch.h> |
5443e65e | 27 | #include <TTree.h> |
c630aafd | 28 | #include <TObjArray.h> |
46d29e70 | 29 | |
46d29e70 | 30 | #include "AliTRDgeometry.h" |
5443e65e | 31 | #include "AliTRDparameter.h" |
3c625a9b | 32 | #include "AliTRDgeometryHole.h" |
46d29e70 | 33 | #include "AliTRDcluster.h" |
34 | #include "AliTRDtrack.h" | |
b7a0917f | 35 | #include "AliESD.h" |
46d29e70 | 36 | |
37 | #include "AliTRDtracker.h" | |
38 | ||
39 | ClassImp(AliTRDtracker) | |
40 | ||
029cd327 | 41 | const Float_t AliTRDtracker::fgkSeedDepth = 0.5; |
42 | const Float_t AliTRDtracker::fgkSeedStep = 0.10; | |
43 | const Float_t AliTRDtracker::fgkSeedGap = 0.25; | |
5443e65e | 44 | |
029cd327 | 45 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; |
46 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; | |
47 | const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; | |
48 | const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; | |
49 | const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; | |
a819a5f7 | 50 | |
029cd327 | 51 | const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; |
52 | const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; | |
53 | const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; | |
bbf92647 | 54 | |
029cd327 | 55 | const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; |
bbf92647 | 56 | |
029cd327 | 57 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
58 | const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; | |
bbf92647 | 59 | |
029cd327 | 60 | const Float_t AliTRDtracker::fgkSkipDepth = 0.3; |
61 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; | |
62 | const Float_t AliTRDtracker::fgkWideRoad = 20.; | |
5443e65e | 63 | |
029cd327 | 64 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
a819a5f7 | 65 | |
029cd327 | 66 | const Int_t AliTRDtracker::fgkFirstPlane = 5; |
67 | const Int_t AliTRDtracker::fgkLastPlane = 17; | |
9c9d2487 | 68 | |
bbf92647 | 69 | |
89f05372 | 70 | //____________________________________________________________________ |
71 | AliTRDtracker::AliTRDtracker():AliTracker(), | |
72 | fGeom(0), | |
73 | fPar(0), | |
74 | fNclusters(0), | |
75 | fClusters(0), | |
76 | fNseeds(0), | |
77 | fSeeds(0), | |
78 | fNtracks(0), | |
79 | fTracks(0), | |
80 | fSY2corr(0), | |
81 | fSZ2corr(0), | |
82 | fTimeBinsPerPlane(0), | |
83 | fMaxGap(0), | |
84 | fVocal(kFALSE), | |
85 | fAddTRDseeds(kFALSE), | |
86 | fNoTilt(kFALSE) | |
87 | { | |
b7a0917f | 88 | // Default constructor |
89 | ||
89f05372 | 90 | for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0; |
91 | for(Int_t j=0;j<5;j++) | |
92 | for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE; | |
93 | } | |
46d29e70 | 94 | //____________________________________________________________________ |
c630aafd | 95 | AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker() |
46d29e70 | 96 | { |
5443e65e | 97 | // |
98 | // Main constructor | |
99 | // | |
46d29e70 | 100 | |
c630aafd | 101 | //Float_t fTzero = 0; |
b8dc2353 | 102 | |
5443e65e | 103 | fAddTRDseeds = kFALSE; |
5443e65e | 104 | fGeom = NULL; |
b8dc2353 | 105 | fNoTilt = kFALSE; |
5443e65e | 106 | |
107 | TDirectory *savedir=gDirectory; | |
108 | TFile *in=(TFile*)geomfile; | |
109 | if (!in->IsOpen()) { | |
110 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); | |
111 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
112 | } | |
113 | else { | |
114 | in->cd(); | |
c630aafd | 115 | // in->ls(); |
5443e65e | 116 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
117 | fPar = (AliTRDparameter*) in->Get("TRDparameter"); | |
c630aafd | 118 | // fGeom->Dump(); |
5443e65e | 119 | } |
46d29e70 | 120 | |
5443e65e | 121 | if(fGeom) { |
122 | // fTzero = geo->GetT0(); | |
b8dc2353 | 123 | printf("Found geometry version %d on file \n", fGeom->IsVersion()); |
5443e65e | 124 | } |
125 | else { | |
c630aafd | 126 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); |
3c625a9b | 127 | //printf("The DETAIL TRD geometry will be used\n"); |
128 | //fGeom = new AliTRDgeometryDetail(); | |
129 | fGeom = new AliTRDgeometryHole(); | |
130 | fGeom->SetPHOShole(); | |
131 | fGeom->SetRICHhole(); | |
c630aafd | 132 | } |
133 | ||
134 | if (!fPar) { | |
135 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); | |
136 | printf("The DEFAULT TRD parameter will be used\n"); | |
5443e65e | 137 | fPar = new AliTRDparameter(); |
138 | } | |
c630aafd | 139 | fPar->ReInit(); |
5443e65e | 140 | |
141 | savedir->cd(); | |
46d29e70 | 142 | |
5443e65e | 143 | |
144 | // fGeom->SetT0(fTzero); | |
0a29d0f1 | 145 | |
46d29e70 | 146 | fNclusters = 0; |
147 | fClusters = new TObjArray(2000); | |
148 | fNseeds = 0; | |
5443e65e | 149 | fSeeds = new TObjArray(2000); |
46d29e70 | 150 | fNtracks = 0; |
5443e65e | 151 | fTracks = new TObjArray(1000); |
a819a5f7 | 152 | |
029cd327 | 153 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
154 | Int_t trS = CookSectorIndex(geomS); | |
155 | fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); | |
3c625a9b | 156 | for (Int_t icham=0;icham<AliTRDgeometry::kNcham; icham++){ |
157 | fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS); | |
158 | } | |
5443e65e | 159 | } |
a819a5f7 | 160 | |
029cd327 | 161 | Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); |
162 | if(tiltAngle < 0.1) { | |
b8dc2353 | 163 | fNoTilt = kTRUE; |
164 | } | |
165 | ||
166 | fSY2corr = 0.2; | |
167 | fSZ2corr = 120.; | |
168 | ||
029cd327 | 169 | if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; |
b8dc2353 | 170 | |
bbf92647 | 171 | |
5443e65e | 172 | // calculate max gap on track |
a819a5f7 | 173 | |
5443e65e | 174 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
175 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
a819a5f7 | 176 | |
5443e65e | 177 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); |
178 | Int_t tbAmp = fPar->GetTimeBefore(); | |
179 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 180 | if(kTRUE) maxAmp = 0; // intentional until we change the parameter class |
5443e65e | 181 | Int_t tbDrift = fPar->GetTimeMax(); |
182 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
a819a5f7 | 183 | |
5443e65e | 184 | tbDrift = TMath::Min(tbDrift,maxDrift); |
185 | tbAmp = TMath::Min(tbAmp,maxAmp); | |
46d29e70 | 186 | |
5443e65e | 187 | fTimeBinsPerPlane = tbAmp + tbDrift; |
029cd327 | 188 | fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); |
46d29e70 | 189 | |
5443e65e | 190 | fVocal = kFALSE; |
0a29d0f1 | 191 | |
9c9d2487 | 192 | savedir->cd(); |
5443e65e | 193 | } |
46d29e70 | 194 | |
5443e65e | 195 | //___________________________________________________________________ |
196 | AliTRDtracker::~AliTRDtracker() | |
46d29e70 | 197 | { |
029cd327 | 198 | // |
199 | // Destructor of AliTRDtracker | |
200 | // | |
201 | ||
89f05372 | 202 | if (fClusters) { |
203 | fClusters->Delete(); | |
204 | delete fClusters; | |
205 | } | |
206 | if (fTracks) { | |
207 | fTracks->Delete(); | |
208 | delete fTracks; | |
209 | } | |
210 | if (fSeeds) { | |
211 | fSeeds->Delete(); | |
212 | delete fSeeds; | |
213 | } | |
5443e65e | 214 | delete fGeom; |
215 | delete fPar; | |
0a29d0f1 | 216 | |
029cd327 | 217 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
218 | delete fTrSec[geomS]; | |
5443e65e | 219 | } |
220 | } | |
46d29e70 | 221 | |
9c9d2487 | 222 | //_____________________________________________________________________ |
223 | ||
9c9d2487 | 224 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { |
225 | // | |
226 | // Rotates the track when necessary | |
227 | // | |
228 | ||
229 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
230 | Double_t y = track->GetY(); | |
231 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
232 | ||
c630aafd | 233 | //Int_t ns = AliTRDgeometry::kNsect; |
9c9d2487 | 234 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; |
235 | ||
236 | if (y > ymax) { | |
237 | //s = (s+1) % ns; | |
238 | if (!track->Rotate(alpha)) return kFALSE; | |
239 | } else if (y <-ymax) { | |
240 | //s = (s-1+ns) % ns; | |
241 | if (!track->Rotate(-alpha)) return kFALSE; | |
242 | } | |
243 | ||
244 | return kTRUE; | |
245 | } | |
246 | ||
46d29e70 | 247 | //_____________________________________________________________________ |
5443e65e | 248 | inline Double_t f1trd(Double_t x1,Double_t y1, |
a9814c09 | 249 | Double_t x2,Double_t y2, |
250 | Double_t x3,Double_t y3) | |
46d29e70 | 251 | { |
0a29d0f1 | 252 | // |
46d29e70 | 253 | // Initial approximation of the track curvature |
0a29d0f1 | 254 | // |
46d29e70 | 255 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
256 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
257 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
258 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
259 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
260 | ||
261 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
262 | ||
263 | return -xr*yr/sqrt(xr*xr+yr*yr); | |
264 | } | |
265 | ||
266 | //_____________________________________________________________________ | |
5443e65e | 267 | inline Double_t f2trd(Double_t x1,Double_t y1, |
a9814c09 | 268 | Double_t x2,Double_t y2, |
269 | Double_t x3,Double_t y3) | |
46d29e70 | 270 | { |
0a29d0f1 | 271 | // |
5443e65e | 272 | // Initial approximation of the track curvature times X coordinate |
273 | // of the center of curvature | |
0a29d0f1 | 274 | // |
46d29e70 | 275 | |
276 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); | |
277 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
278 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
279 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
280 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
281 | ||
282 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
283 | ||
284 | return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); | |
285 | } | |
286 | ||
287 | //_____________________________________________________________________ | |
5443e65e | 288 | inline Double_t f3trd(Double_t x1,Double_t y1, |
a9814c09 | 289 | Double_t x2,Double_t y2, |
290 | Double_t z1,Double_t z2) | |
46d29e70 | 291 | { |
0a29d0f1 | 292 | // |
46d29e70 | 293 | // Initial approximation of the tangent of the track dip angle |
0a29d0f1 | 294 | // |
46d29e70 | 295 | |
296 | return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
297 | } | |
298 | ||
46e2d86c | 299 | |
300 | AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ | |
301 | // | |
302 | //try to find cluster in the backup list | |
303 | // | |
304 | AliTRDcluster * cl =0; | |
305 | UInt_t *indexes = track->GetBackupIndexes(); | |
306 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
307 | if (indexes[i]==0) break; | |
308 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
309 | if (!cli) break; | |
310 | if (cli->GetLocalTimeBin()!=timebin) continue; | |
311 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); | |
312 | if (iplane==plane) { | |
313 | cl = cli; | |
314 | break; | |
315 | } | |
316 | } | |
317 | return cl; | |
318 | } | |
319 | ||
3c625a9b | 320 | |
321 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track){ | |
322 | // | |
323 | //return last updated plane | |
324 | Int_t lastplane=0; | |
325 | UInt_t *indexes = track->GetBackupIndexes(); | |
326 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
327 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
328 | if (!cli) break; | |
329 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); | |
330 | if (iplane>lastplane) { | |
331 | lastplane = iplane; | |
332 | } | |
333 | } | |
334 | return lastplane; | |
335 | } | |
c630aafd | 336 | //___________________________________________________________________ |
337 | Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) | |
338 | { | |
339 | // | |
340 | // Finds tracks within the TRD. The ESD event is expected to contain seeds | |
341 | // at the outer part of the TRD. The seeds | |
342 | // are found within the TRD if fAddTRDseeds is TRUE. | |
343 | // The tracks are propagated to the innermost time bin | |
344 | // of the TRD and the ESD event is updated | |
345 | // | |
346 | ||
347 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
029cd327 | 348 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
c630aafd | 349 | Int_t nseed = 0; |
350 | Int_t found = 0; | |
351 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
352 | ||
353 | Int_t n = event->GetNumberOfTracks(); | |
354 | for (Int_t i=0; i<n; i++) { | |
355 | AliESDtrack* seed=event->GetTrack(i); | |
356 | ULong_t status=seed->GetStatus(); | |
357 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; | |
358 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; | |
359 | nseed++; | |
360 | ||
361 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
46e2d86c | 362 | //seed2->ResetCovariance(); |
c630aafd | 363 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
364 | AliTRDtrack &t=*pt; | |
365 | FollowProlongation(t, innerTB); | |
366 | if (t.GetNumberOfClusters() >= foundMin) { | |
367 | UseClusters(&t); | |
029cd327 | 368 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 369 | // t.CookdEdx(); |
370 | } | |
371 | found++; | |
372 | // cout<<found<<'\r'; | |
373 | ||
374 | if(PropagateToTPC(t)) { | |
375 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDin); | |
376 | } | |
377 | delete seed2; | |
378 | delete pt; | |
379 | } | |
380 | ||
381 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
382 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
383 | ||
384 | // after tracks from loaded seeds are found and the corresponding | |
385 | // clusters are used, look for additional seeds from TRD | |
386 | ||
387 | if(fAddTRDseeds) { | |
388 | // Find tracks for the seeds in the TRD | |
389 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
390 | ||
029cd327 | 391 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
392 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); | |
393 | Int_t step = (Int_t) (timeBins * fgkSeedStep); | |
c630aafd | 394 | |
395 | // make a first turn with tight cut on initial curvature | |
396 | for(Int_t turn = 1; turn <= 2; turn++) { | |
397 | if(turn == 2) { | |
029cd327 | 398 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
399 | step = (Int_t) (timeBins * (3*fgkSeedStep)); | |
c630aafd | 400 | } |
401 | for(Int_t i=0; i<nSteps; i++) { | |
402 | Int_t outer=timeBins-1-i*step; | |
403 | Int_t inner=outer-gap; | |
404 | ||
405 | nseed=fSeeds->GetEntriesFast(); | |
406 | ||
407 | MakeSeeds(inner, outer, turn); | |
408 | ||
409 | nseed=fSeeds->GetEntriesFast(); | |
7bed16a7 | 410 | // printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", |
411 | // turn, i, nseed); | |
c630aafd | 412 | |
413 | for (Int_t i=0; i<nseed; i++) { | |
414 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
415 | FollowProlongation(t,innerTB); | |
416 | if (t.GetNumberOfClusters() >= foundMin) { | |
417 | UseClusters(&t); | |
029cd327 | 418 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 419 | t.CookdEdx(); |
420 | found++; | |
421 | // cout<<found<<'\r'; | |
422 | if(PropagateToTPC(t)) { | |
423 | AliESDtrack track; | |
424 | track.UpdateTrackParams(pt,AliESDtrack::kTRDin); | |
425 | event->AddTrack(&track); | |
c5a8e3df | 426 | // track.SetTRDtrack(new AliTRDtrack(*pt)); |
c630aafd | 427 | } |
428 | } | |
429 | delete fSeeds->RemoveAt(i); | |
430 | fNseeds--; | |
431 | } | |
432 | } | |
433 | } | |
434 | } | |
435 | ||
436 | cout<<"Total number of found tracks: "<<found<<endl; | |
437 | ||
438 | return 0; | |
439 | } | |
5443e65e | 440 | |
c630aafd | 441 | |
5443e65e | 442 | |
c630aafd | 443 | //_____________________________________________________________________________ |
444 | Int_t AliTRDtracker::PropagateBack(AliESD* event) { | |
445 | // | |
446 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
447 | // backpropagated by the TPC tracker. Each seed is first propagated | |
448 | // to the TRD, and then its prolongation is searched in the TRD. | |
449 | // If sufficiently long continuation of the track is found in the TRD | |
450 | // the track is updated, otherwise it's stored as originaly defined | |
451 | // by the TPC tracker. | |
452 | // | |
453 | ||
454 | Int_t found=0; | |
c5a8e3df | 455 | Float_t foundMin = 20; |
c630aafd | 456 | |
457 | Int_t n = event->GetNumberOfTracks(); | |
458 | for (Int_t i=0; i<n; i++) { | |
459 | AliESDtrack* seed=event->GetTrack(i); | |
460 | ULong_t status=seed->GetStatus(); | |
461 | if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; | |
462 | if ( (status & AliESDtrack::kTRDout) != 0 ) continue; | |
463 | ||
464 | Int_t lbl = seed->GetLabel(); | |
465 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
466 | track->SetSeedLabel(lbl); | |
f4e9508c | 467 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); //make backup |
c630aafd | 468 | fNseeds++; |
7bed16a7 | 469 | Float_t p4 = track->GetC(); |
470 | // | |
3c625a9b | 471 | Int_t expectedClr = FollowBackProlongation(*track); |
f4e9508c | 472 | /* |
473 | // only debug purpose | |
3c625a9b | 474 | if (track->GetNumberOfClusters()<expectedClr/3){ |
475 | AliTRDtrack *track1 = new AliTRDtrack(*seed); | |
476 | track1->SetSeedLabel(lbl); | |
477 | FollowBackProlongation(*track1); | |
478 | AliTRDtrack *track2= new AliTRDtrack(*seed); | |
479 | track->SetSeedLabel(lbl); | |
480 | FollowBackProlongation(*track2); | |
481 | delete track1; | |
482 | delete track2; | |
483 | } | |
f4e9508c | 484 | */ |
485 | if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)>0.2) { | |
7bed16a7 | 486 | delete track; |
487 | continue; //too big change of curvature - to be checked | |
488 | } | |
f4e9508c | 489 | |
c630aafd | 490 | Int_t foundClr = track->GetNumberOfClusters(); |
491 | if (foundClr >= foundMin) { | |
eab5961e | 492 | track->CookdEdx(0.,1.); |
493 | CookdEdxTimBin(*track); | |
494 | ||
f4e9508c | 495 | CookLabel(track, 1-fgkLabelFraction); |
496 | if(track->GetChi2()/track->GetNumberOfClusters()<6) { // sign only gold tracks | |
c630aafd | 497 | UseClusters(track); |
498 | } | |
f4e9508c | 499 | Bool_t isGold = kFALSE; |
500 | ||
501 | if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track | |
502 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
503 | isGold = kTRUE; | |
504 | } | |
505 | if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track | |
506 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
507 | isGold = kTRUE; | |
508 | } | |
509 | if (!isGold && track->GetBackupTrack()){ | |
510 | if (track->GetBackupTrack()->GetNumberOfClusters()>foundMin&& | |
511 | (track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1))<7){ | |
512 | seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
513 | isGold = kTRUE; | |
514 | } | |
16d9fbba | 515 | } |
c630aafd | 516 | } |
f4e9508c | 517 | else{ |
0dd7d129 | 518 | delete track; |
f4e9508c | 519 | continue; |
520 | } | |
c630aafd | 521 | |
3c625a9b | 522 | |
523 | if (track->GetStop()==kFALSE){ | |
c5a8e3df | 524 | |
b94f0a96 | 525 | Double_t xtof=371.; |
3c625a9b | 526 | Double_t c2=track->GetC()*xtof - track->GetEta(); |
c5a8e3df | 527 | if (TMath::Abs(c2)>=0.85) { |
528 | delete track; | |
529 | continue; | |
530 | } | |
b94f0a96 | 531 | Double_t xTOF0 = 371. ; |
16d9fbba | 532 | PropagateToOuterPlane(*track,xTOF0); |
7bed16a7 | 533 | // |
3c625a9b | 534 | Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); |
535 | Double_t y=track->GetYat(xtof); | |
536 | if (y > ymax) { | |
7ac6fa52 | 537 | if (!track->Rotate(AliTRDgeometry::GetAlpha())) { |
538 | delete track; | |
7bed16a7 | 539 | continue; |
7ac6fa52 | 540 | } |
3c625a9b | 541 | } else if (y <-ymax) { |
7ac6fa52 | 542 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { |
543 | delete track; | |
7bed16a7 | 544 | continue; |
7ac6fa52 | 545 | } |
3c625a9b | 546 | } |
547 | ||
548 | if (track->PropagateTo(xtof)) { | |
eab5961e | 549 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
550 | for (Int_t i=0;i<kNPlane;i++) { | |
551 | seed->SetTRDsignals(track->GetPIDsignals(i),i); | |
552 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
553 | } | |
c5a8e3df | 554 | seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b | 555 | if (track->GetNumberOfClusters()>foundMin) found++; |
556 | } | |
557 | }else{ | |
558 | if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ | |
559 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
16d9fbba | 560 | //seed->SetStatus(AliESDtrack::kTRDStop); |
eab5961e | 561 | for (Int_t i=0;i<kNPlane;i++) { |
562 | seed->SetTRDsignals(track->GetPIDsignals(i),i); | |
563 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
564 | } | |
c5a8e3df | 565 | seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b | 566 | found++; |
567 | } | |
1e9bb598 | 568 | } |
569 | ||
d9b8978b | 570 | delete track; |
3c625a9b | 571 | |
1e9bb598 | 572 | //End of propagation to the TOF |
3c625a9b | 573 | //if (foundClr>foundMin) |
574 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
575 | ||
c630aafd | 576 | |
577 | } | |
578 | ||
579 | cerr<<"Number of seeds: "<<fNseeds<<endl; | |
580 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
581 | ||
1e9bb598 | 582 | fSeeds->Clear(); fNseeds=0; |
583 | ||
584 | return 0; | |
585 | ||
586 | } | |
587 | ||
588 | //_____________________________________________________________________________ | |
589 | Int_t AliTRDtracker::RefitInward(AliESD* event) | |
590 | { | |
591 | // | |
592 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
593 | // at the outer part of the TRD. | |
594 | // The tracks are propagated to the innermost time bin | |
595 | // of the TRD and the ESD event is updated | |
596 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
597 | // | |
598 | ||
599 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
600 | Float_t foundMin = fgkMinClustersInTrack * timeBins; | |
601 | Int_t nseed = 0; | |
602 | Int_t found = 0; | |
603 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
604 | ||
605 | Int_t n = event->GetNumberOfTracks(); | |
606 | for (Int_t i=0; i<n; i++) { | |
607 | AliESDtrack* seed=event->GetTrack(i); | |
f4e9508c | 608 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
609 | if (seed2->GetX()<270){ | |
610 | seed->UpdateTrackParams(seed2, AliESDtrack::kTRDbackup); // backup TPC track - only update | |
0dd7d129 | 611 | delete seed2; |
f4e9508c | 612 | continue; |
613 | } | |
614 | ||
1e9bb598 | 615 | ULong_t status=seed->GetStatus(); |
0dd7d129 | 616 | if ( (status & AliESDtrack::kTRDout ) == 0 ) { |
617 | delete seed2; | |
618 | continue; | |
619 | } | |
620 | if ( (status & AliESDtrack::kTRDin) != 0 ) { | |
621 | delete seed2; | |
622 | continue; | |
623 | } | |
f4e9508c | 624 | nseed++; |
3c625a9b | 625 | seed2->ResetCovariance(5.); |
1e9bb598 | 626 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
eab5961e | 627 | for (Int_t i=0;i<kNPlane;i++) { |
628 | pt->SetPIDsignals(seed2->GetPIDsignals(i),i); | |
629 | pt->SetPIDTimBin(seed2->GetPIDTimBin(i),i); | |
630 | } | |
631 | ||
46e2d86c | 632 | UInt_t * indexes2 = seed2->GetIndexes(); |
633 | UInt_t * indexes3 = pt->GetBackupIndexes(); | |
634 | for (Int_t i=0;i<200;i++) { | |
635 | if (indexes2[i]==0) break; | |
636 | indexes3[i] = indexes2[i]; | |
637 | } | |
638 | //AliTRDtrack *pt = seed2; | |
1e9bb598 | 639 | AliTRDtrack &t=*pt; |
640 | FollowProlongation(t, innerTB); | |
7bed16a7 | 641 | /* |
46e2d86c | 642 | if (t.GetNumberOfClusters()<seed->GetTRDclusters(indexes3)*0.5){ |
643 | // debug - why we dont go back? | |
644 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); | |
645 | UInt_t * indexes2 = seed2->GetIndexes(); | |
646 | UInt_t * indexes3 = pt2->GetBackupIndexes(); | |
647 | for (Int_t i=0;i<200;i++) { | |
648 | if (indexes2[i]==0) break; | |
649 | indexes3[i] = indexes2[i]; | |
650 | } | |
3c625a9b | 651 | FollowProlongation(*pt2, innerTB); |
652 | delete pt2; | |
46e2d86c | 653 | } |
7bed16a7 | 654 | */ |
1e9bb598 | 655 | if (t.GetNumberOfClusters() >= foundMin) { |
46e2d86c | 656 | // UseClusters(&t); |
657 | //CookLabel(pt, 1-fgkLabelFraction); | |
1e9bb598 | 658 | // t.CookdEdx(); |
659 | } | |
660 | found++; | |
661 | // cout<<found<<'\r'; | |
662 | ||
663 | if(PropagateToTPC(t)) { | |
0fa7dfa7 | 664 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit); |
eab5961e | 665 | for (Int_t i=0;i<kNPlane;i++) { |
666 | seed->SetTRDsignals(pt->GetPIDsignals(i),i); | |
667 | seed->SetTRDTimBin(pt->GetPIDTimBin(i),i); | |
668 | } | |
7bed16a7 | 669 | }else{ |
670 | //if not prolongation to TPC - propagate without update | |
671 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
672 | seed2->ResetCovariance(5.); | |
673 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); | |
674 | delete seed2; | |
eab5961e | 675 | if (PropagateToTPC(*pt2)) { |
676 | pt2->CookdEdx(0.,1.); | |
677 | CookdEdxTimBin(*pt2); | |
7bed16a7 | 678 | seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); |
eab5961e | 679 | for (Int_t i=0;i<kNPlane;i++) { |
680 | seed->SetTRDsignals(seed2->GetPIDsignals(i),i); | |
681 | seed->SetTRDTimBin(seed2->GetPIDTimBin(i),i); | |
682 | } | |
683 | } | |
7bed16a7 | 684 | delete pt2; |
1e9bb598 | 685 | } |
7bed16a7 | 686 | |
1e9bb598 | 687 | delete seed2; |
688 | delete pt; | |
eab5961e | 689 | } |
1e9bb598 | 690 | |
691 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
692 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
693 | ||
c630aafd | 694 | return 0; |
695 | ||
696 | } | |
697 | ||
bbf92647 | 698 | |
5443e65e | 699 | //--------------------------------------------------------------------------- |
700 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) | |
701 | { | |
702 | // Starting from current position on track=t this function tries | |
703 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
704 | // if a close cluster is found. Returns the number of clusters | |
705 | // expected to be found in sensitive layers | |
bbf92647 | 706 | |
5443e65e | 707 | Float_t wIndex, wTB, wChi2; |
708 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
709 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
710 | Float_t wPx, wPy, wPz, wC; | |
029cd327 | 711 | Double_t px, py, pz; |
5443e65e | 712 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
3c625a9b | 713 | Int_t lastplane = GetLastPlane(&t); |
46d29e70 | 714 | |
5443e65e | 715 | Int_t trackIndex = t.GetLabel(); |
46d29e70 | 716 | |
5443e65e | 717 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
46d29e70 | 718 | |
029cd327 | 719 | Int_t tryAgain=fMaxGap; |
46d29e70 | 720 | |
5443e65e | 721 | Double_t alpha=t.GetAlpha(); |
c630aafd | 722 | alpha = TVector2::Phi_0_2pi(alpha); |
46d29e70 | 723 | |
5443e65e | 724 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
029cd327 | 725 | Double_t radLength, rho, x, dx, y, ymax, z; |
46d29e70 | 726 | |
5443e65e | 727 | Int_t expectedNumberOfClusters = 0; |
728 | Bool_t lookForCluster; | |
46d29e70 | 729 | |
5443e65e | 730 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 731 | |
5443e65e | 732 | |
733 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
734 | ||
735 | y = t.GetY(); z = t.GetZ(); | |
736 | ||
737 | // first propagate to the inner surface of the current time bin | |
029cd327 | 738 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 739 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 740 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 741 | y = t.GetY(); |
742 | ymax = x*TMath::Tan(0.5*alpha); | |
743 | if (y > ymax) { | |
744 | s = (s+1) % ns; | |
745 | if (!t.Rotate(alpha)) break; | |
029cd327 | 746 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 747 | } else if (y <-ymax) { |
748 | s = (s-1+ns) % ns; | |
749 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 750 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 751 | } |
46d29e70 | 752 | |
5443e65e | 753 | y = t.GetY(); z = t.GetZ(); |
754 | ||
755 | // now propagate to the middle plane of the next time bin | |
029cd327 | 756 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 757 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 758 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 759 | y = t.GetY(); |
760 | ymax = x*TMath::Tan(0.5*alpha); | |
761 | if (y > ymax) { | |
762 | s = (s+1) % ns; | |
763 | if (!t.Rotate(alpha)) break; | |
029cd327 | 764 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 765 | } else if (y <-ymax) { |
766 | s = (s-1+ns) % ns; | |
767 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 768 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 769 | } |
46d29e70 | 770 | |
46d29e70 | 771 | |
5443e65e | 772 | if(lookForCluster) { |
a819a5f7 | 773 | |
5443e65e | 774 | expectedNumberOfClusters++; |
5443e65e | 775 | wIndex = (Float_t) t.GetLabel(); |
776 | wTB = nr; | |
46d29e70 | 777 | |
029cd327 | 778 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); |
46d29e70 | 779 | |
5443e65e | 780 | Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); |
5443e65e | 781 | Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); |
46d29e70 | 782 | |
5443e65e | 783 | Double_t road; |
784 | if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); | |
785 | else return expectedNumberOfClusters; | |
786 | ||
787 | wYrt = (Float_t) y; | |
788 | wZrt = (Float_t) z; | |
789 | wYwindow = (Float_t) road; | |
029cd327 | 790 | t.GetPxPyPz(px,py,pz); |
791 | wPx = (Float_t) px; | |
792 | wPy = (Float_t) py; | |
793 | wPz = (Float_t) pz; | |
5443e65e | 794 | wC = (Float_t) t.GetC(); |
795 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
796 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
797 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
798 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
799 | wChi2 = -1; | |
800 | ||
5443e65e | 801 | |
802 | AliTRDcluster *cl=0; | |
803 | UInt_t index=0; | |
804 | ||
029cd327 | 805 | Double_t maxChi2=fgkMaxChi2; |
5443e65e | 806 | |
807 | wYclosest = 12345678; | |
808 | wYcorrect = 12345678; | |
809 | wZclosest = 12345678; | |
810 | wZcorrect = 12345678; | |
811 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
812 | ||
813 | // Find the closest correct cluster for debugging purposes | |
029cd327 | 814 | if (timeBin) { |
a9814c09 | 815 | Float_t minDY = 1000000; |
029cd327 | 816 | for (Int_t i=0; i<timeBin; i++) { |
817 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 818 | if((c->GetLabel(0) != trackIndex) && |
819 | (c->GetLabel(1) != trackIndex) && | |
820 | (c->GetLabel(2) != trackIndex)) continue; | |
821 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
822 | minDY = TMath::Abs(c->GetY() - y); | |
823 | wYcorrect = c->GetY(); | |
824 | wZcorrect = c->GetZ(); | |
825 | ||
826 | Double_t h01 = GetTiltFactor(c); | |
827 | wChi2 = t.GetPredictedChi2(c, h01); | |
828 | } | |
5443e65e | 829 | } |
46d29e70 | 830 | |
5443e65e | 831 | // Now go for the real cluster search |
a819a5f7 | 832 | |
029cd327 | 833 | if (timeBin) { |
46e2d86c | 834 | // |
835 | //find cluster in history | |
836 | cl =0; | |
837 | ||
838 | AliTRDcluster * cl0 = timeBin[0]; | |
839 | if (!cl0) { | |
840 | continue; | |
841 | } | |
842 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); | |
3c625a9b | 843 | if (plane>lastplane) continue; |
46e2d86c | 844 | Int_t timebin = cl0->GetLocalTimeBin(); |
845 | AliTRDcluster * cl2= GetCluster(&t,plane, timebin); | |
3c625a9b | 846 | if (cl2) { |
847 | cl =cl2; | |
848 | Double_t h01 = GetTiltFactor(cl); | |
849 | maxChi2=t.GetPredictedChi2(cl,h01); | |
850 | } | |
46e2d86c | 851 | if ((!cl) && road>fgkWideRoad) { |
852 | //if (t.GetNumberOfClusters()>4) | |
853 | // cerr<<t.GetNumberOfClusters() | |
854 | // <<"FindProlongation warning: Too broad road !\n"; | |
855 | continue; | |
856 | } | |
857 | ||
858 | ||
859 | if(!cl){ | |
860 | ||
861 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { | |
862 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
863 | if (c->GetY() > y+road) break; | |
864 | if (c->IsUsed() > 0) continue; | |
865 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; | |
866 | ||
867 | Double_t h01 = GetTiltFactor(c); | |
868 | Double_t chi2=t.GetPredictedChi2(c,h01); | |
869 | ||
870 | if (chi2 > maxChi2) continue; | |
871 | maxChi2=chi2; | |
872 | cl=c; | |
873 | index=timeBin.GetIndex(i); | |
874 | } | |
875 | } | |
a9814c09 | 876 | |
877 | if(!cl) { | |
878 | ||
029cd327 | 879 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
880 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 881 | |
882 | if (c->GetY() > y+road) break; | |
883 | if (c->IsUsed() > 0) continue; | |
884 | if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; | |
885 | ||
886 | Double_t h01 = GetTiltFactor(c); | |
887 | Double_t chi2=t.GetPredictedChi2(c, h01); | |
888 | ||
029cd327 | 889 | if (chi2 > maxChi2) continue; |
890 | maxChi2=chi2; | |
a9814c09 | 891 | cl=c; |
029cd327 | 892 | index=timeBin.GetIndex(i); |
a9814c09 | 893 | } |
894 | } | |
a9814c09 | 895 | if (cl) { |
896 | wYclosest = cl->GetY(); | |
897 | wZclosest = cl->GetZ(); | |
898 | Double_t h01 = GetTiltFactor(cl); | |
899 | ||
900 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
46e2d86c | 901 | //printf("Track position\t%f\t%f\t%f\n",t.GetX(),t.GetY(),t.GetZ()); |
902 | //printf("Cluster position\t%d\t%f\t%f\n",cl->GetLocalTimeBin(),cl->GetY(),cl->GetZ()); | |
3c625a9b | 903 | Int_t det = cl->GetDetector(); |
904 | Int_t plane = fGeom->GetPlane(det); | |
46e2d86c | 905 | |
3c625a9b | 906 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
907 | //if(!t.Update(cl,maxChi2,index,h01)) { | |
908 | //if(!tryAgain--) return 0; | |
a9814c09 | 909 | } |
029cd327 | 910 | else tryAgain=fMaxGap; |
a9814c09 | 911 | } |
912 | else { | |
3c625a9b | 913 | //if (tryAgain==0) break; |
029cd327 | 914 | tryAgain--; |
a9814c09 | 915 | } |
916 | ||
917 | /* | |
918 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
919 | ||
920 | printf(" %f", wIndex); //1 | |
921 | printf(" %f", wTB); //2 | |
922 | printf(" %f", wYrt); //3 | |
923 | printf(" %f", wYclosest); //4 | |
924 | printf(" %f", wYcorrect); //5 | |
925 | printf(" %f", wYwindow); //6 | |
926 | printf(" %f", wZrt); //7 | |
927 | printf(" %f", wZclosest); //8 | |
928 | printf(" %f", wZcorrect); //9 | |
929 | printf(" %f", wZwindow); //10 | |
930 | printf(" %f", wPx); //11 | |
931 | printf(" %f", wPy); //12 | |
932 | printf(" %f", wPz); //13 | |
933 | printf(" %f", wSigmaC2*1000000); //14 | |
934 | printf(" %f", wSigmaTgl2*1000); //15 | |
935 | printf(" %f", wSigmaY2); //16 | |
936 | // printf(" %f", wSigmaZ2); //17 | |
937 | printf(" %f", wChi2); //17 | |
938 | printf(" %f", wC); //18 | |
939 | printf("\n"); | |
940 | } | |
941 | */ | |
5443e65e | 942 | } |
943 | } | |
944 | } | |
945 | return expectedNumberOfClusters; | |
946 | ||
947 | ||
948 | } | |
a819a5f7 | 949 | |
5443e65e | 950 | //___________________________________________________________________ |
46d29e70 | 951 | |
5443e65e | 952 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
953 | { | |
954 | // Starting from current radial position of track <t> this function | |
955 | // extrapolates the track up to outer timebin and in the sensitive | |
956 | // layers confirms prolongation if a close cluster is found. | |
957 | // Returns the number of clusters expected to be found in sensitive layers | |
46d29e70 | 958 | |
16d9fbba | 959 | |
5443e65e | 960 | Float_t wIndex, wTB, wChi2; |
961 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
962 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
963 | Float_t wPx, wPy, wPz, wC; | |
029cd327 | 964 | Double_t px, py, pz; |
5443e65e | 965 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
46d29e70 | 966 | |
5443e65e | 967 | Int_t trackIndex = t.GetLabel(); |
029cd327 | 968 | Int_t tryAgain=fMaxGap; |
46d29e70 | 969 | |
5443e65e | 970 | Double_t alpha=t.GetAlpha(); |
9c9d2487 | 971 | TVector2::Phi_0_2pi(alpha); |
46d29e70 | 972 | |
9c9d2487 | 973 | Int_t s; |
46d29e70 | 974 | |
5443e65e | 975 | Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); |
029cd327 | 976 | Double_t radLength, rho, x, dx, y, ymax = 0, z; |
5443e65e | 977 | Bool_t lookForCluster; |
a819a5f7 | 978 | |
5443e65e | 979 | Int_t expectedNumberOfClusters = 0; |
980 | x = t.GetX(); | |
46d29e70 | 981 | |
5443e65e | 982 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 983 | |
029cd327 | 984 | Int_t nRefPlane = fgkFirstPlane; |
9c9d2487 | 985 | Bool_t isNewLayer = kFALSE; |
46d29e70 | 986 | |
9c9d2487 | 987 | Double_t chi2; |
988 | Double_t minDY; | |
3c625a9b | 989 | Int_t zone =-10; |
990 | Int_t nr; | |
991 | for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) { | |
9c9d2487 | 992 | |
993 | y = t.GetY(); | |
994 | z = t.GetZ(); | |
46d29e70 | 995 | |
5443e65e | 996 | // first propagate to the outer surface of the current time bin |
46d29e70 | 997 | |
9c9d2487 | 998 | s = t.GetSector(); |
029cd327 | 999 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1000 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; |
1001 | y = t.GetY(); | |
1002 | z = t.GetZ(); | |
46d29e70 | 1003 | |
029cd327 | 1004 | if(!t.PropagateTo(x,radLength,rho)) break; |
3c625a9b | 1005 | // if (!AdjustSector(&t)) break; |
1006 | // | |
1007 | // MI -fix untill correct material desription will be implemented | |
1008 | // | |
16d9fbba | 1009 | Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material |
9c9d2487 | 1010 | if (!AdjustSector(&t)) break; |
16d9fbba | 1011 | Int_t cross = kFALSE; |
1012 | ||
1013 | if (TMath::Abs(angle - t.GetAlpha())>0.000001) cross = kTRUE; //better to stop track | |
3c625a9b | 1014 | Int_t currentzone = fTrSec[s]->GetLayer(nr)->GetZone(z); |
16d9fbba | 1015 | if (currentzone==-10) cross = kTRUE; // we are in the frame |
3c625a9b | 1016 | if (currentzone>-10){ // layer knows where we are |
1017 | if (zone==-10) zone = currentzone; | |
16d9fbba | 1018 | if (zone!=currentzone) cross=kTRUE; |
1019 | } | |
1020 | if (cross) { | |
1021 | t.IncCross(); | |
1022 | if (t.GetNCross()==1) t.MakeBackupTrack(); | |
1023 | if (t.GetNCross()>2) break; | |
3c625a9b | 1024 | } |
16d9fbba | 1025 | |
3c625a9b | 1026 | // |
1027 | // | |
9c9d2487 | 1028 | s = t.GetSector(); |
029cd327 | 1029 | if (!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 | 1030 | |
5443e65e | 1031 | y = t.GetY(); |
9c9d2487 | 1032 | z = t.GetZ(); |
a819a5f7 | 1033 | |
9c9d2487 | 1034 | // Barrel Tracks [SR, 04.04.2003] |
46d29e70 | 1035 | |
9c9d2487 | 1036 | s = t.GetSector(); |
1037 | if (fTrSec[s]->GetLayer(nr)->IsSensitive() != | |
1038 | fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { | |
46d29e70 | 1039 | |
c630aafd | 1040 | // if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); |
9c9d2487 | 1041 | } |
46d29e70 | 1042 | |
9c9d2487 | 1043 | if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && |
1044 | ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { | |
1045 | isNewLayer = kTRUE; | |
1046 | } else {isNewLayer = kFALSE;} | |
46d29e70 | 1047 | |
5443e65e | 1048 | y = t.GetY(); |
9c9d2487 | 1049 | z = t.GetZ(); |
a819a5f7 | 1050 | |
9c9d2487 | 1051 | // now propagate to the middle plane of the next time bin |
029cd327 | 1052 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1053 | |
9c9d2487 | 1054 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); |
029cd327 | 1055 | if(!t.PropagateTo(x,radLength,rho)) break; |
9c9d2487 | 1056 | if (!AdjustSector(&t)) break; |
1057 | s = t.GetSector(); | |
029cd327 | 1058 | if(!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 | 1059 | |
9c9d2487 | 1060 | y = t.GetY(); |
1061 | z = t.GetZ(); | |
1062 | ||
1063 | if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); | |
5443e65e | 1064 | // printf("label %d, pl %d, lookForCluster %d \n", |
a9814c09 | 1065 | // trackIndex, nr+1, lookForCluster); |
5443e65e | 1066 | |
1067 | if(lookForCluster) { | |
1068 | expectedNumberOfClusters++; | |
1069 | ||
1070 | wIndex = (Float_t) t.GetLabel(); | |
1071 | wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); | |
1072 | ||
029cd327 | 1073 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); |
5443e65e | 1074 | Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); |
1075 | Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); | |
1076 | if((t.GetSigmaY2() + sy2) < 0) break; | |
1077 | Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); | |
1078 | Double_t y=t.GetY(), z=t.GetZ(); | |
1079 | ||
1080 | wYrt = (Float_t) y; | |
1081 | wZrt = (Float_t) z; | |
1082 | wYwindow = (Float_t) road; | |
029cd327 | 1083 | t.GetPxPyPz(px,py,pz); |
1084 | wPx = (Float_t) px; | |
1085 | wPy = (Float_t) py; | |
1086 | wPz = (Float_t) pz; | |
5443e65e | 1087 | wC = (Float_t) t.GetC(); |
1088 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
1089 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
1090 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
1091 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
1092 | wChi2 = -1; | |
1093 | ||
029cd327 | 1094 | if (road>fgkWideRoad) { |
a9814c09 | 1095 | if (t.GetNumberOfClusters()>4) |
1096 | cerr<<t.GetNumberOfClusters() | |
1097 | <<"FindProlongation warning: Too broad road !\n"; | |
1098 | return 0; | |
5443e65e | 1099 | } |
1100 | ||
1101 | AliTRDcluster *cl=0; | |
1102 | UInt_t index=0; | |
1103 | ||
029cd327 | 1104 | Double_t maxChi2=fgkMaxChi2; |
5443e65e | 1105 | |
9c9d2487 | 1106 | if (isNewLayer) { |
1107 | road = 3 * road; | |
1108 | //sz2 = 3 * sz2; | |
029cd327 | 1109 | maxChi2 = 10 * fgkMaxChi2; |
9c9d2487 | 1110 | } |
1111 | ||
029cd327 | 1112 | if (nRefPlane == fgkFirstPlane) maxChi2 = 20 * fgkMaxChi2; |
1113 | if (nRefPlane == fgkFirstPlane+2) maxChi2 = 15 * fgkMaxChi2; | |
1114 | if (t.GetNRotate() > 0) maxChi2 = 3 * maxChi2; | |
9c9d2487 | 1115 | |
1116 | ||
5443e65e | 1117 | wYclosest = 12345678; |
1118 | wYcorrect = 12345678; | |
1119 | wZclosest = 12345678; | |
1120 | wZcorrect = 12345678; | |
1121 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
1122 | ||
1123 | // Find the closest correct cluster for debugging purposes | |
029cd327 | 1124 | if (timeBin) { |
9c9d2487 | 1125 | minDY = 1000000; |
029cd327 | 1126 | for (Int_t i=0; i<timeBin; i++) { |
1127 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1128 | if((c->GetLabel(0) != trackIndex) && |
1129 | (c->GetLabel(1) != trackIndex) && | |
1130 | (c->GetLabel(2) != trackIndex)) continue; | |
1131 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
9c9d2487 | 1132 | //minDY = TMath::Abs(c->GetY() - y); |
1133 | minDY = c->GetY() - y; | |
a9814c09 | 1134 | wYcorrect = c->GetY(); |
1135 | wZcorrect = c->GetZ(); | |
1136 | ||
1137 | Double_t h01 = GetTiltFactor(c); | |
1138 | wChi2 = t.GetPredictedChi2(c, h01); | |
1139 | } | |
5443e65e | 1140 | } |
46d29e70 | 1141 | |
5443e65e | 1142 | // Now go for the real cluster search |
46d29e70 | 1143 | |
029cd327 | 1144 | if (timeBin) { |
5443e65e | 1145 | |
029cd327 | 1146 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1147 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1148 | if (c->GetY() > y+road) break; |
9c9d2487 | 1149 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1150 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; |
1151 | ||
1152 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1153 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1154 | |
029cd327 | 1155 | if (chi2 > maxChi2) continue; |
1156 | maxChi2=chi2; | |
a9814c09 | 1157 | cl=c; |
029cd327 | 1158 | index=timeBin.GetIndex(i); |
9c9d2487 | 1159 | |
1160 | //check is correct | |
1161 | if((c->GetLabel(0) != trackIndex) && | |
1162 | (c->GetLabel(1) != trackIndex) && | |
1163 | (c->GetLabel(2) != trackIndex)) t.AddNWrong(); | |
a9814c09 | 1164 | } |
5443e65e | 1165 | |
a9814c09 | 1166 | if(!cl) { |
1167 | ||
029cd327 | 1168 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1169 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1170 | |
1171 | if (c->GetY() > y+road) break; | |
9c9d2487 | 1172 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1173 | if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; |
1174 | ||
1175 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1176 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1177 | |
029cd327 | 1178 | if (chi2 > maxChi2) continue; |
1179 | maxChi2=chi2; | |
a9814c09 | 1180 | cl=c; |
029cd327 | 1181 | index=timeBin.GetIndex(i); |
a9814c09 | 1182 | } |
1183 | } | |
1184 | ||
1185 | if (cl) { | |
1186 | wYclosest = cl->GetY(); | |
1187 | wZclosest = cl->GetZ(); | |
1188 | ||
1189 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1190 | Double_t h01 = GetTiltFactor(cl); | |
3c625a9b | 1191 | Int_t det = cl->GetDetector(); |
1192 | Int_t plane = fGeom->GetPlane(det); | |
1193 | ||
1194 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { | |
1195 | //if(!t.Update(cl,maxChi2,index,h01)) { | |
029cd327 | 1196 | if(!tryAgain--) return 0; |
a9814c09 | 1197 | } |
029cd327 | 1198 | else tryAgain=fMaxGap; |
a9814c09 | 1199 | } |
1200 | else { | |
029cd327 | 1201 | if (tryAgain==0) break; |
1202 | tryAgain--; | |
9c9d2487 | 1203 | |
1204 | //if (minDY < 1000000 && isNewLayer) | |
1205 | //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" << | |
029cd327 | 1206 | // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << maxChi2 << endl; |
9c9d2487 | 1207 | |
a9814c09 | 1208 | } |
1209 | ||
9c9d2487 | 1210 | isNewLayer = kFALSE; |
1211 | ||
a9814c09 | 1212 | /* |
1213 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
1214 | ||
1215 | printf(" %f", wIndex); //1 | |
1216 | printf(" %f", wTB); //2 | |
1217 | printf(" %f", wYrt); //3 | |
1218 | printf(" %f", wYclosest); //4 | |
1219 | printf(" %f", wYcorrect); //5 | |
1220 | printf(" %f", wYwindow); //6 | |
1221 | printf(" %f", wZrt); //7 | |
1222 | printf(" %f", wZclosest); //8 | |
1223 | printf(" %f", wZcorrect); //9 | |
1224 | printf(" %f", wZwindow); //10 | |
1225 | printf(" %f", wPx); //11 | |
1226 | printf(" %f", wPy); //12 | |
1227 | printf(" %f", wPz); //13 | |
1228 | printf(" %f", wSigmaC2*1000000); //14 | |
1229 | printf(" %f", wSigmaTgl2*1000); //15 | |
1230 | printf(" %f", wSigmaY2); //16 | |
1231 | // printf(" %f", wSigmaZ2); //17 | |
1232 | printf(" %f", wChi2); //17 | |
1233 | printf(" %f", wC); //18 | |
1234 | printf("\n"); | |
1235 | } | |
1236 | */ | |
5443e65e | 1237 | } |
1238 | } | |
1239 | } | |
3c625a9b | 1240 | if (nr<outerTB) |
1241 | t.SetStop(kTRUE); | |
1242 | else | |
1243 | t.SetStop(kFALSE); | |
5443e65e | 1244 | return expectedNumberOfClusters; |
9c9d2487 | 1245 | |
1246 | ||
5443e65e | 1247 | } |
1248 | ||
1e9bb598 | 1249 | //--------------------------------------------------------------------------- |
1250 | Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf) | |
1251 | { | |
1252 | // Starting from current position on track=t this function tries | |
1253 | // to extrapolate the track up to timeBin=0 and to reuse already | |
1254 | // assigned clusters. Returns the number of clusters | |
1255 | // expected to be found in sensitive layers | |
1256 | // get indices of assigned clusters for each layer | |
1257 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
1258 | ||
1259 | Int_t iCluster[90]; | |
1260 | for (Int_t i = 0; i < 90; i++) iCluster[i] = 0; | |
1261 | for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) { | |
1262 | Int_t index = t.GetClusterIndex(i); | |
1263 | AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index); | |
1264 | if (!cl) continue; | |
1265 | Int_t detector=cl->GetDetector(); | |
1266 | Int_t localTimeBin=cl->GetLocalTimeBin(); | |
1267 | Int_t sector=fGeom->GetSector(detector); | |
1268 | Int_t plane=fGeom->GetPlane(detector); | |
1269 | ||
1270 | Int_t trackingSector = CookSectorIndex(sector); | |
1271 | ||
1272 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); | |
1273 | if(gtb < 0) continue; | |
1274 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); | |
1275 | iCluster[layer] = index; | |
1276 | } | |
1277 | t.ResetClusters(); | |
1278 | ||
1279 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1280 | ||
1281 | Double_t alpha=t.GetAlpha(); | |
1282 | alpha = TVector2::Phi_0_2pi(alpha); | |
1283 | ||
1284 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1285 | Double_t radLength, rho, x, dx, y, ymax, z; | |
1286 | ||
1287 | Int_t expectedNumberOfClusters = 0; | |
1288 | Bool_t lookForCluster; | |
1289 | ||
1290 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1291 | ||
1292 | ||
1293 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
1294 | ||
1295 | y = t.GetY(); z = t.GetZ(); | |
1296 | ||
1297 | // first propagate to the inner surface of the current time bin | |
1298 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1299 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); | |
1300 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1301 | y = t.GetY(); | |
1302 | ymax = x*TMath::Tan(0.5*alpha); | |
1303 | if (y > ymax) { | |
1304 | s = (s+1) % ns; | |
1305 | if (!t.Rotate(alpha)) break; | |
1306 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1307 | } else if (y <-ymax) { | |
1308 | s = (s-1+ns) % ns; | |
1309 | if (!t.Rotate(-alpha)) break; | |
1310 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1311 | } | |
1312 | ||
1313 | y = t.GetY(); z = t.GetZ(); | |
1314 | ||
1315 | // now propagate to the middle plane of the next time bin | |
1316 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1317 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); | |
1318 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1319 | y = t.GetY(); | |
1320 | ymax = x*TMath::Tan(0.5*alpha); | |
1321 | if (y > ymax) { | |
1322 | s = (s+1) % ns; | |
1323 | if (!t.Rotate(alpha)) break; | |
1324 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1325 | } else if (y <-ymax) { | |
1326 | s = (s-1+ns) % ns; | |
1327 | if (!t.Rotate(-alpha)) break; | |
1328 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1329 | } | |
1330 | ||
1331 | if(lookForCluster) expectedNumberOfClusters++; | |
1332 | ||
1333 | // use assigned cluster | |
1334 | if (!iCluster[nr-1]) continue; | |
1335 | AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); | |
1336 | Double_t h01 = GetTiltFactor(cl); | |
1337 | Double_t chi2=t.GetPredictedChi2(cl, h01); | |
1338 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1339 | t.Update(cl,chi2,iCluster[nr-1],h01); | |
1340 | } | |
1341 | ||
1342 | return expectedNumberOfClusters; | |
1343 | } | |
1344 | ||
5443e65e | 1345 | //___________________________________________________________________ |
1346 | ||
1347 | Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) | |
1348 | { | |
1349 | // Starting from current radial position of track <t> this function | |
1350 | // extrapolates the track up to radial position <xToGo>. | |
1351 | // Returns 1 if track reaches the plane, and 0 otherwise | |
1352 | ||
1353 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1354 | ||
1355 | Double_t alpha=t.GetAlpha(); | |
1356 | ||
1357 | if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); | |
1358 | if (alpha < 0. ) alpha += 2.*TMath::Pi(); | |
1359 | ||
1360 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1361 | ||
1362 | Bool_t lookForCluster; | |
029cd327 | 1363 | Double_t radLength, rho, x, dx, y, ymax, z; |
5443e65e | 1364 | |
1365 | x = t.GetX(); | |
1366 | ||
1367 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1368 | ||
1369 | Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); | |
1370 | ||
1371 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr<plToGo; nr++) { | |
1372 | ||
1373 | y = t.GetY(); z = t.GetZ(); | |
1374 | ||
1375 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1376 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1377 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 1378 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1379 | y = t.GetY(); |
1380 | ymax = x*TMath::Tan(0.5*alpha); | |
1381 | if (y > ymax) { | |
1382 | s = (s+1) % ns; | |
1383 | if (!t.Rotate(alpha)) return 0; | |
1384 | } else if (y <-ymax) { | |
1385 | s = (s-1+ns) % ns; | |
1386 | if (!t.Rotate(-alpha)) return 0; | |
1387 | } | |
029cd327 | 1388 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1389 | |
1390 | y = t.GetY(); z = t.GetZ(); | |
1391 | ||
1392 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1393 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1394 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 1395 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1396 | y = t.GetY(); |
1397 | ymax = x*TMath::Tan(0.5*alpha); | |
1398 | if (y > ymax) { | |
1399 | s = (s+1) % ns; | |
1400 | if (!t.Rotate(alpha)) return 0; | |
1401 | } else if (y <-ymax) { | |
1402 | s = (s-1+ns) % ns; | |
1403 | if (!t.Rotate(-alpha)) return 0; | |
1404 | } | |
029cd327 | 1405 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1406 | } |
1407 | return 1; | |
1408 | } | |
1409 | ||
1410 | //___________________________________________________________________ | |
1411 | ||
1412 | Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) | |
1413 | { | |
1414 | // Starting from current radial position of track <t> this function | |
1415 | // extrapolates the track up to radial position of the outermost | |
1416 | // padrow of the TPC. | |
1417 | // Returns 1 if track reaches the TPC, and 0 otherwise | |
1418 | ||
c630aafd | 1419 | //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
5443e65e | 1420 | |
1421 | Double_t alpha=t.GetAlpha(); | |
c630aafd | 1422 | alpha = TVector2::Phi_0_2pi(alpha); |
5443e65e | 1423 | |
1424 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1425 | ||
1426 | Bool_t lookForCluster; | |
029cd327 | 1427 | Double_t radLength, rho, x, dx, y, /*ymax,*/ z; |
5443e65e | 1428 | |
1429 | x = t.GetX(); | |
1430 | ||
1431 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
5443e65e | 1432 | Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); |
1433 | ||
1434 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { | |
1435 | ||
9c9d2487 | 1436 | y = t.GetY(); |
1437 | z = t.GetZ(); | |
5443e65e | 1438 | |
1439 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1440 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1441 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; |
1442 | ||
029cd327 | 1443 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1444 | AdjustSector(&t); |
029cd327 | 1445 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1446 | |
9c9d2487 | 1447 | y = t.GetY(); |
1448 | z = t.GetZ(); | |
5443e65e | 1449 | |
1450 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1451 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1452 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); |
1453 | ||
029cd327 | 1454 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1455 | AdjustSector(&t); |
029cd327 | 1456 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
c5a8e3df | 1457 | } |
5443e65e | 1458 | return 1; |
1459 | } | |
1460 | ||
c630aafd | 1461 | //_____________________________________________________________________________ |
1462 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1463 | { | |
1464 | // Fills clusters into TRD tracking_sectors | |
1465 | // Note that the numbering scheme for the TRD tracking_sectors | |
1466 | // differs from that of TRD sectors | |
1467 | ||
1468 | if (ReadClusters(fClusters,cTree)) { | |
1469 | Error("LoadClusters","Problem with reading the clusters !"); | |
1470 | return 1; | |
1471 | } | |
1472 | Int_t ncl=fClusters->GetEntriesFast(); | |
b7a0917f | 1473 | fNclusters=ncl; |
c630aafd | 1474 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; |
1475 | ||
1476 | UInt_t index; | |
3c625a9b | 1477 | for (Int_t ichamber=0;ichamber<5;ichamber++) |
1478 | for (Int_t isector=0;isector<18;isector++){ | |
1479 | fHoles[ichamber][isector]=kTRUE; | |
1480 | } | |
1481 | ||
1482 | ||
c630aafd | 1483 | while (ncl--) { |
1484 | // printf("\r %d left ",ncl); | |
1485 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); | |
029cd327 | 1486 | Int_t detector=c->GetDetector(); |
1487 | Int_t localTimeBin=c->GetLocalTimeBin(); | |
c630aafd | 1488 | Int_t sector=fGeom->GetSector(detector); |
1489 | Int_t plane=fGeom->GetPlane(detector); | |
3c625a9b | 1490 | |
029cd327 | 1491 | Int_t trackingSector = CookSectorIndex(sector); |
3c625a9b | 1492 | if (c->GetLabel(0)>0){ |
1493 | Int_t chamber = fGeom->GetChamber(detector); | |
1494 | fHoles[chamber][trackingSector]=kFALSE; | |
1495 | } | |
c630aafd | 1496 | |
029cd327 | 1497 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
c630aafd | 1498 | if(gtb < 0) continue; |
029cd327 | 1499 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1500 | |
1501 | index=ncl; | |
029cd327 | 1502 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
c630aafd | 1503 | } |
7bed16a7 | 1504 | // printf("\r\n"); |
3c625a9b | 1505 | // |
1506 | // | |
1507 | /* | |
1508 | for (Int_t isector=0;isector<18;isector++){ | |
1509 | for (Int_t ichamber=0;ichamber<5;ichamber++) | |
1510 | if (fHoles[ichamber][isector]!=fGeom->IsHole(0,ichamber,17-isector)) | |
1511 | printf("Problem \t%d\t%d\t%d\t%d\n",isector,ichamber,fHoles[ichamber][isector], | |
1512 | fGeom->IsHole(0,ichamber,17-isector)); | |
1513 | } | |
1514 | */ | |
c630aafd | 1515 | return 0; |
1516 | } | |
1517 | ||
5443e65e | 1518 | //_____________________________________________________________________________ |
b7a0917f | 1519 | void AliTRDtracker::UnloadClusters() |
5443e65e | 1520 | { |
1521 | // | |
1522 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1523 | // | |
1524 | ||
1525 | Int_t i, nentr; | |
1526 | ||
1527 | nentr = fClusters->GetEntriesFast(); | |
1528 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); | |
b7a0917f | 1529 | fNclusters = 0; |
5443e65e | 1530 | |
1531 | nentr = fSeeds->GetEntriesFast(); | |
1532 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); | |
1533 | ||
1534 | nentr = fTracks->GetEntriesFast(); | |
1535 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); | |
1536 | ||
1537 | Int_t nsec = AliTRDgeometry::kNsect; | |
1538 | ||
1539 | for (i = 0; i < nsec; i++) { | |
1540 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1541 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1542 | } | |
1543 | } | |
1544 | ||
1545 | } | |
1546 | ||
1547 | //__________________________________________________________________________ | |
1548 | void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) | |
1549 | { | |
1550 | // Creates track seeds using clusters in timeBins=i1,i2 | |
1551 | ||
1552 | if(turn > 2) { | |
1553 | cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl; | |
1554 | return; | |
1555 | } | |
1556 | ||
1557 | Double_t x[5], c[15]; | |
029cd327 | 1558 | Int_t maxSec=AliTRDgeometry::kNsect; |
5443e65e | 1559 | |
1560 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
1561 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; | |
1562 | Double_t cs=cos(alpha), sn=sin(alpha); | |
1563 | Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); | |
1564 | ||
1565 | ||
1566 | Int_t i2 = fTrSec[0]->GetLayerNumber(inner); | |
1567 | Int_t i1 = fTrSec[0]->GetLayerNumber(outer); | |
1568 | ||
1569 | Double_t x1 =fTrSec[0]->GetX(i1); | |
1570 | Double_t xx2=fTrSec[0]->GetX(i2); | |
1571 | ||
029cd327 | 1572 | for (Int_t ns=0; ns<maxSec; ns++) { |
5443e65e | 1573 | |
029cd327 | 1574 | Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
1575 | Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); | |
5443e65e | 1576 | Int_t nm=(*fTrSec[ns]->GetLayer(i2)); |
029cd327 | 1577 | Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
1578 | Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); | |
5443e65e | 1579 | |
1580 | AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); | |
1581 | ||
1582 | for (Int_t is=0; is < r1; is++) { | |
1583 | Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); | |
1584 | ||
1585 | for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { | |
a9814c09 | 1586 | |
1587 | const AliTRDcluster *cl; | |
1588 | Double_t x2, y2, z2; | |
1589 | Double_t x3=0., y3=0.; | |
1590 | ||
1591 | if (js<nl2) { | |
1592 | if(turn != 2) continue; | |
029cd327 | 1593 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1594 | cl=r2[js]; |
1595 | y2=cl->GetY(); z2=cl->GetZ(); | |
1596 | ||
1597 | x2= xx2*cs2+y2*sn2; | |
1598 | y2=-xx2*sn2+y2*cs2; | |
1599 | } | |
1600 | else if (js<nl2+nl) { | |
1601 | if(turn != 1) continue; | |
029cd327 | 1602 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1603 | cl=r2[js-nl2]; |
1604 | y2=cl->GetY(); z2=cl->GetZ(); | |
1605 | ||
1606 | x2= xx2*cs+y2*sn; | |
1607 | y2=-xx2*sn+y2*cs; | |
1608 | } | |
1609 | else if (js<nl2+nl+nm) { | |
1610 | if(turn != 1) continue; | |
1611 | AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2)); | |
1612 | cl=r2[js-nl2-nl]; | |
1613 | x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); | |
1614 | } | |
1615 | else if (js<nl2+nl+nm+nu) { | |
1616 | if(turn != 1) continue; | |
029cd327 | 1617 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
a9814c09 | 1618 | cl=r2[js-nl2-nl-nm]; |
1619 | y2=cl->GetY(); z2=cl->GetZ(); | |
1620 | ||
1621 | x2=xx2*cs-y2*sn; | |
1622 | y2=xx2*sn+y2*cs; | |
1623 | } | |
1624 | else { | |
1625 | if(turn != 2) continue; | |
029cd327 | 1626 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); |
a9814c09 | 1627 | cl=r2[js-nl2-nl-nm-nu]; |
1628 | y2=cl->GetY(); z2=cl->GetZ(); | |
1629 | ||
1630 | x2=xx2*cs2-y2*sn2; | |
1631 | y2=xx2*sn2+y2*cs2; | |
1632 | } | |
1633 | ||
029cd327 | 1634 | if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; |
a9814c09 | 1635 | |
1636 | Double_t zz=z1 - z1/x1*(x1-x2); | |
1637 | ||
029cd327 | 1638 | if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; |
a9814c09 | 1639 | |
1640 | Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); | |
1641 | if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} | |
1642 | ||
1643 | x[0]=y1; | |
1644 | x[1]=z1; | |
1645 | x[4]=f1trd(x1,y1,x2,y2,x3,y3); | |
1646 | ||
029cd327 | 1647 | if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; |
a9814c09 | 1648 | |
1649 | x[2]=f2trd(x1,y1,x2,y2,x3,y3); | |
1650 | ||
1651 | if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; | |
1652 | ||
1653 | x[3]=f3trd(x1,y1,x2,y2,z1,z2); | |
1654 | ||
029cd327 | 1655 | if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; |
a9814c09 | 1656 | |
1657 | Double_t a=asin(x[2]); | |
1658 | Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); | |
1659 | ||
029cd327 | 1660 | if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; |
a9814c09 | 1661 | |
1662 | Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); | |
1663 | Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); | |
029cd327 | 1664 | Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; |
a9814c09 | 1665 | |
1666 | // Tilt changes | |
1667 | Double_t h01 = GetTiltFactor(r1[is]); | |
029cd327 | 1668 | Double_t xuFactor = 100.; |
b8dc2353 | 1669 | if(fNoTilt) { |
1670 | h01 = 0; | |
029cd327 | 1671 | xuFactor = 1; |
b8dc2353 | 1672 | } |
1673 | ||
fd621f36 | 1674 | sy1=sy1+sz1*h01*h01; |
b3a5a838 | 1675 | Double_t syz=sz1*(-h01); |
a9814c09 | 1676 | // end of tilt changes |
1677 | ||
b3a5a838 | 1678 | Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; |
1679 | Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; | |
1680 | Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; | |
1681 | Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; | |
1682 | Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; | |
1683 | Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; | |
1684 | Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; | |
1685 | Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; | |
1686 | Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; | |
1687 | Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; | |
1688 | ||
a9814c09 | 1689 | |
b3a5a838 | 1690 | c[0]=sy1; |
a9814c09 | 1691 | // c[1]=0.; c[2]=sz1; |
029cd327 | 1692 | c[1]=syz; c[2]=sz1*xuFactor; |
b3a5a838 | 1693 | c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; |
1694 | c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; | |
1695 | c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; | |
1696 | c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; | |
1697 | c[13]=f30*sy1*f40+f32*sy2*f42; | |
1698 | c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; | |
a9814c09 | 1699 | |
1700 | UInt_t index=r1.GetIndex(is); | |
1701 | ||
1702 | AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); | |
1703 | ||
1704 | Int_t rc=FollowProlongation(*track, i2); | |
1705 | ||
1706 | if ((rc < 1) || | |
1707 | (track->GetNumberOfClusters() < | |
029cd327 | 1708 | (outer-inner)*fgkMinClustersInSeed)) delete track; |
a9814c09 | 1709 | else { |
1710 | fSeeds->AddLast(track); fNseeds++; | |
e24ea474 | 1711 | // cerr<<"\r found seed "<<fNseeds; |
a9814c09 | 1712 | } |
5443e65e | 1713 | } |
1714 | } | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | //_____________________________________________________________________________ | |
b7a0917f | 1719 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const |
5443e65e | 1720 | { |
1721 | // | |
a819a5f7 | 1722 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
1723 | // from the file. The names of the cluster tree and branches | |
1724 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
1725 | // | |
029cd327 | 1726 | TObjArray *clusterArray = new TObjArray(400); |
5443e65e | 1727 | |
c630aafd | 1728 | TBranch *branch=ClusterTree->GetBranch("TRDcluster"); |
1729 | if (!branch) { | |
1730 | Error("ReadClusters","Can't get the branch !"); | |
1731 | return 1; | |
1732 | } | |
029cd327 | 1733 | branch->SetAddress(&clusterArray); |
5443e65e | 1734 | |
1735 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); | |
19dd5b2f | 1736 | // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); |
a819a5f7 | 1737 | |
a819a5f7 | 1738 | // Loop through all entries in the tree |
eb187bed | 1739 | Int_t nbytes = 0; |
a819a5f7 | 1740 | AliTRDcluster *c = 0; |
7bed16a7 | 1741 | // printf("\n"); |
a819a5f7 | 1742 | |
1743 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { | |
1744 | ||
1745 | // Import the tree | |
5443e65e | 1746 | nbytes += ClusterTree->GetEvent(iEntry); |
1747 | ||
a819a5f7 | 1748 | // Get the number of points in the detector |
029cd327 | 1749 | Int_t nCluster = clusterArray->GetEntriesFast(); |
e24ea474 | 1750 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 1751 | |
a819a5f7 | 1752 | // Loop through all TRD digits |
1753 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
029cd327 | 1754 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
a819a5f7 | 1755 | AliTRDcluster *co = new AliTRDcluster(*c); |
1756 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
5443e65e | 1757 | Int_t ltb = co->GetLocalTimeBin(); |
b8dc2353 | 1758 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
1759 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
a819a5f7 | 1760 | array->AddLast(co); |
029cd327 | 1761 | delete clusterArray->RemoveAt(iCluster); |
a819a5f7 | 1762 | } |
1763 | } | |
1764 | ||
029cd327 | 1765 | delete clusterArray; |
5443e65e | 1766 | |
c630aafd | 1767 | return 0; |
a819a5f7 | 1768 | } |
1769 | ||
46d29e70 | 1770 | //__________________________________________________________________ |
029cd327 | 1771 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const |
1772 | { | |
1773 | // | |
1774 | // This cooks a label. Mmmmh, smells good... | |
1775 | // | |
46d29e70 | 1776 | |
1777 | Int_t label=123456789, index, i, j; | |
5443e65e | 1778 | Int_t ncl=pt->GetNumberOfClusters(); |
029cd327 | 1779 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; |
5443e65e | 1780 | |
029cd327 | 1781 | Bool_t labelAdded; |
46d29e70 | 1782 | |
029cd327 | 1783 | // Int_t s[kRange][2]; |
1784 | Int_t **s = new Int_t* [kRange]; | |
1785 | for (i=0; i<kRange; i++) { | |
d1b06c24 | 1786 | s[i] = new Int_t[2]; |
1787 | } | |
029cd327 | 1788 | for (i=0; i<kRange; i++) { |
46d29e70 | 1789 | s[i][0]=-1; |
1790 | s[i][1]=0; | |
1791 | } | |
1792 | ||
1793 | Int_t t0,t1,t2; | |
1794 | for (i=0; i<ncl; i++) { | |
5443e65e | 1795 | index=pt->GetClusterIndex(i); |
46d29e70 | 1796 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
5443e65e | 1797 | t0=c->GetLabel(0); |
1798 | t1=c->GetLabel(1); | |
1799 | t2=c->GetLabel(2); | |
46d29e70 | 1800 | } |
1801 | ||
1802 | for (i=0; i<ncl; i++) { | |
5443e65e | 1803 | index=pt->GetClusterIndex(i); |
46d29e70 | 1804 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
1805 | for (Int_t k=0; k<3; k++) { | |
5443e65e | 1806 | label=c->GetLabel(k); |
029cd327 | 1807 | labelAdded=kFALSE; j=0; |
46d29e70 | 1808 | if (label >= 0) { |
029cd327 | 1809 | while ( (!labelAdded) && ( j < kRange ) ) { |
a9814c09 | 1810 | if (s[j][0]==label || s[j][1]==0) { |
1811 | s[j][0]=label; | |
1812 | s[j][1]=s[j][1]+1; | |
029cd327 | 1813 | labelAdded=kTRUE; |
a9814c09 | 1814 | } |
1815 | j++; | |
1816 | } | |
46d29e70 | 1817 | } |
1818 | } | |
1819 | } | |
1820 | ||
46d29e70 | 1821 | Int_t max=0; |
1822 | label = -123456789; | |
1823 | ||
029cd327 | 1824 | for (i=0; i<kRange; i++) { |
46d29e70 | 1825 | if (s[i][1]>max) { |
1826 | max=s[i][1]; label=s[i][0]; | |
1827 | } | |
1828 | } | |
5443e65e | 1829 | |
029cd327 | 1830 | for (i=0; i<kRange; i++) { |
5443e65e | 1831 | delete []s[i]; |
1832 | } | |
1833 | ||
d1b06c24 | 1834 | delete []s; |
5443e65e | 1835 | |
1836 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; | |
1837 | ||
1838 | pt->SetLabel(label); | |
1839 | ||
46d29e70 | 1840 | } |
1841 | ||
c630aafd | 1842 | |
5443e65e | 1843 | //__________________________________________________________________ |
029cd327 | 1844 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const |
1845 | { | |
1846 | // | |
1847 | // Use clusters, but don't abuse them! | |
1848 | // | |
1849 | ||
5443e65e | 1850 | Int_t ncl=t->GetNumberOfClusters(); |
1851 | for (Int_t i=from; i<ncl; i++) { | |
1852 | Int_t index = t->GetClusterIndex(i); | |
1853 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
1854 | c->Use(); | |
1855 | } | |
1856 | } | |
1857 | ||
1858 | ||
1859 | //_____________________________________________________________________ | |
029cd327 | 1860 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 1861 | { |
1862 | // Parametrised "expected" error of the cluster reconstruction in Y | |
1863 | ||
1864 | Double_t s = 0.08 * 0.08; | |
1865 | return s; | |
1866 | } | |
1867 | ||
1868 | //_____________________________________________________________________ | |
029cd327 | 1869 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 1870 | { |
5443e65e | 1871 | // Parametrised "expected" error of the cluster reconstruction in Z |
1872 | ||
a9814c09 | 1873 | Double_t s = 9 * 9 /12.; |
5443e65e | 1874 | return s; |
1875 | } | |
1876 | ||
5443e65e | 1877 | //_____________________________________________________________________ |
029cd327 | 1878 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 1879 | { |
1880 | // | |
029cd327 | 1881 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 1882 | // in tracking sector <sector> and plane <plane> |
1883 | // | |
1884 | ||
029cd327 | 1885 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
5443e65e | 1886 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
1887 | return fTrSec[sector]->GetLayer(pl)->GetX(); | |
1888 | ||
1889 | } | |
1890 | ||
c630aafd | 1891 | |
5443e65e | 1892 | //_______________________________________________________ |
1893 | AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, | |
029cd327 | 1894 | Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) |
5443e65e | 1895 | { |
0a29d0f1 | 1896 | // |
5443e65e | 1897 | // AliTRDpropagationLayer constructor |
0a29d0f1 | 1898 | // |
46d29e70 | 1899 | |
029cd327 | 1900 | fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; |
1901 | fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; | |
5443e65e | 1902 | |
46d29e70 | 1903 | |
029cd327 | 1904 | for(Int_t i=0; i < (Int_t) kZones; i++) { |
5443e65e | 1905 | fZc[i]=0; fZmax[i] = 0; |
a819a5f7 | 1906 | } |
5443e65e | 1907 | |
1908 | fYmax = 0; | |
1909 | ||
1910 | if(fTimeBinIndex >= 0) { | |
029cd327 | 1911 | fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; |
1912 | fIndex = new UInt_t[kMaxClusterPerTimeBin]; | |
a819a5f7 | 1913 | } |
46d29e70 | 1914 | |
3c625a9b | 1915 | for (Int_t i=0;i<5;i++) fIsHole[i] = kFALSE; |
5443e65e | 1916 | fHole = kFALSE; |
1917 | fHoleZc = 0; | |
1918 | fHoleZmax = 0; | |
1919 | fHoleYc = 0; | |
1920 | fHoleYmax = 0; | |
1921 | fHoleRho = 0; | |
1922 | fHoleX0 = 0; | |
1923 | ||
1924 | } | |
1925 | ||
1926 | //_______________________________________________________ | |
1927 | void AliTRDtracker::AliTRDpropagationLayer::SetHole( | |
a9814c09 | 1928 | Double_t Zmax, Double_t Ymax, Double_t rho, |
029cd327 | 1929 | Double_t radLength, Double_t Yc, Double_t Zc) |
5443e65e | 1930 | { |
1931 | // | |
1932 | // Sets hole in the layer | |
1933 | // | |
5443e65e | 1934 | fHole = kTRUE; |
1935 | fHoleZc = Zc; | |
1936 | fHoleZmax = Zmax; | |
1937 | fHoleYc = Yc; | |
1938 | fHoleYmax = Ymax; | |
1939 | fHoleRho = rho; | |
029cd327 | 1940 | fHoleX0 = radLength; |
5443e65e | 1941 | } |
1942 | ||
46d29e70 | 1943 | |
5443e65e | 1944 | //_______________________________________________________ |
1945 | AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) | |
1946 | { | |
1947 | // | |
1948 | // AliTRDtrackingSector Constructor | |
1949 | // | |
1950 | ||
1951 | fGeom = geo; | |
1952 | fPar = par; | |
1953 | fGeomSector = gs; | |
1954 | fTzeroShift = 0.13; | |
1955 | fN = 0; | |
3c625a9b | 1956 | // |
1957 | // get holes description from geometry | |
1958 | Bool_t holes[AliTRDgeometry::kNcham]; | |
1959 | //printf("sector\t%d\t",gs); | |
1960 | for (Int_t icham=0; icham<AliTRDgeometry::kNcham;icham++){ | |
1961 | holes[icham] = fGeom->IsHole(0,icham,gs); | |
1962 | //printf("%d",holes[icham]); | |
1963 | } | |
1964 | //printf("\n"); | |
1965 | ||
029cd327 | 1966 | for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; |
5443e65e | 1967 | |
1968 | ||
1969 | AliTRDpropagationLayer* ppl; | |
1970 | ||
029cd327 | 1971 | Double_t x, xin, xout, dx, rho, radLength; |
5443e65e | 1972 | Int_t steps; |
46d29e70 | 1973 | |
5443e65e | 1974 | // set time bins in the gas of the TPC |
46d29e70 | 1975 | |
5443e65e | 1976 | xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; |
029cd327 | 1977 | rho = 0.9e-3; radLength = 28.94; |
5443e65e | 1978 | |
1979 | for(Int_t i=0; i<steps; i++) { | |
1980 | x = xin + i*dx + dx/2; | |
029cd327 | 1981 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 1982 | InsertLayer(ppl); |
46d29e70 | 1983 | } |
1984 | ||
5443e65e | 1985 | // set time bins in the outer field cage vessel |
46d29e70 | 1986 | |
029cd327 | 1987 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
1988 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 1989 | InsertLayer(ppl); |
46d29e70 | 1990 | |
029cd327 | 1991 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
1992 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 1993 | InsertLayer(ppl); |
1994 | ||
029cd327 | 1995 | dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 1996 | steps = 5; dx = (xout - xin)/steps; |
1997 | for(Int_t i=0; i<steps; i++) { | |
1998 | x = xin + i*dx + dx/2; | |
029cd327 | 1999 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2000 | InsertLayer(ppl); |
2001 | } | |
2002 | ||
029cd327 | 2003 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2004 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2005 | InsertLayer(ppl); |
2006 | ||
029cd327 | 2007 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2008 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2009 | InsertLayer(ppl); |
0a29d0f1 | 2010 | |
5443e65e | 2011 | |
2012 | // set time bins in CO2 | |
2013 | ||
2014 | xin = xout; xout = 275.0; | |
2015 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2016 | rho = 1.977e-3; radLength = 36.2; |
5443e65e | 2017 | |
2018 | for(Int_t i=0; i<steps; i++) { | |
2019 | x = xin + i*dx + dx/2; | |
029cd327 | 2020 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2021 | InsertLayer(ppl); |
2022 | } | |
2023 | ||
2024 | // set time bins in the outer containment vessel | |
2025 | ||
029cd327 | 2026 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2027 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2028 | InsertLayer(ppl); |
2029 | ||
029cd327 | 2030 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2031 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2032 | InsertLayer(ppl); |
2033 | ||
029cd327 | 2034 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2035 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2036 | InsertLayer(ppl); |
2037 | ||
029cd327 | 2038 | dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 2039 | steps = 10; dx = (xout - xin)/steps; |
2040 | for(Int_t i=0; i<steps; i++) { | |
2041 | x = xin + i*dx + dx/2; | |
029cd327 | 2042 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2043 | InsertLayer(ppl); |
2044 | } | |
2045 | ||
029cd327 | 2046 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2047 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2048 | InsertLayer(ppl); |
2049 | ||
029cd327 | 2050 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2051 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2052 | InsertLayer(ppl); |
2053 | ||
029cd327 | 2054 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2055 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2056 | InsertLayer(ppl); |
2057 | ||
2058 | Double_t xtrd = (Double_t) fGeom->Rmin(); | |
2059 | ||
2060 | // add layers between TPC and TRD (Air temporarily) | |
2061 | xin = xout; xout = xtrd; | |
2062 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2063 | rho = 1.2e-3; radLength = 36.66; |
5443e65e | 2064 | |
2065 | for(Int_t i=0; i<steps; i++) { | |
2066 | x = xin + i*dx + dx/2; | |
029cd327 | 2067 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2068 | InsertLayer(ppl); |
2069 | } | |
2070 | ||
2071 | ||
3c625a9b | 2072 | // Double_t alpha=AliTRDgeometry::GetAlpha(); |
5443e65e | 2073 | |
2074 | // add layers for each of the planes | |
2075 | ||
2076 | Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell | |
2077 | Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes | |
2078 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2079 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2080 | Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator | |
2081 | Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; | |
2082 | Double_t dxPlane = dxTEC + dxSpace; | |
2083 | ||
029cd327 | 2084 | Int_t tb, tbIndex; |
2085 | const Int_t kNchambers = AliTRDgeometry::Ncham(); | |
3c625a9b | 2086 | Double_t ymax = 0; |
2087 | //, holeYmax = 0; | |
2088 | Double_t ymaxsensitive=0; | |
029cd327 | 2089 | Double_t *zc = new Double_t[kNchambers]; |
2090 | Double_t *zmax = new Double_t[kNchambers]; | |
3c625a9b | 2091 | Double_t *zmaxsensitive = new Double_t[kNchambers]; |
2092 | // Double_t holeZmax = 1000.; // the whole sector is missing | |
5443e65e | 2093 | |
5443e65e | 2094 | for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
3c625a9b | 2095 | // |
5443e65e | 2096 | // Radiator |
2097 | xin = xtrd + plane * dxPlane; xout = xin + dxRad; | |
029cd327 | 2098 | steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2099 | for(Int_t i=0; i<steps; i++) { |
2100 | x = xin + i*dx + dx/2; | |
3c625a9b | 2101 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2102 | InsertLayer(ppl); |
2103 | } | |
2104 | ||
3c625a9b | 2105 | ymax = fGeom->GetChamberWidth(plane)/2.; |
2106 | ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; | |
2107 | ||
029cd327 | 2108 | for(Int_t ch = 0; ch < kNchambers; ch++) { |
2109 | zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; | |
5443e65e | 2110 | Float_t pad = fPar->GetRowPadSize(plane,ch,0); |
2111 | Float_t row0 = fPar->GetRow0(plane,ch,0); | |
2112 | Int_t nPads = fPar->GetRowMax(plane,ch,0); | |
857b3eb0 | 2113 | zmaxsensitive[ch] = Float_t(nPads)*pad/2.; |
3c625a9b | 2114 | // zc[ch] = (pad * nPads)/2 + row0 - pad/2; |
2115 | zc[ch] = (pad * nPads)/2 + row0; | |
2116 | //zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW(); | |
2117 | ||
5443e65e | 2118 | } |
2119 | ||
2120 | dx = fPar->GetTimeBinSize(); | |
029cd327 | 2121 | rho = 0.00295 * 0.85; radLength = 11.0; |
5443e65e | 2122 | |
2123 | Double_t x0 = (Double_t) fPar->GetTime0(plane); | |
2124 | Double_t xbottom = x0 - dxDrift; | |
2125 | Double_t xtop = x0 + dxAmp; | |
3c625a9b | 2126 | // |
5443e65e | 2127 | // Amplification region |
5443e65e | 2128 | steps = (Int_t) (dxAmp/dx); |
2129 | ||
2130 | for(tb = 0; tb < steps; tb++) { | |
2131 | x = x0 + tb * dx + dx/2; | |
029cd327 | 2132 | tbIndex = CookTimeBinIndex(plane, -tb-1); |
2133 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); | |
3c625a9b | 2134 | ppl->SetYmax(ymax,ymaxsensitive); |
2135 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2136 | ppl->SetHoles(holes); | |
5443e65e | 2137 | InsertLayer(ppl); |
2138 | } | |
029cd327 | 2139 | tbIndex = CookTimeBinIndex(plane, -steps); |
5443e65e | 2140 | x = (x + dx/2 + xtop)/2; |
2141 | dx = 2*(xtop-x); | |
029cd327 | 2142 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2143 | ppl->SetYmax(ymax,ymaxsensitive); |
2144 | ppl->SetZ(zc, zmax,zmaxsensitive); | |
2145 | ppl->SetHoles(holes); | |
5443e65e | 2146 | InsertLayer(ppl); |
2147 | ||
2148 | // Drift region | |
2149 | dx = fPar->GetTimeBinSize(); | |
2150 | steps = (Int_t) (dxDrift/dx); | |
2151 | ||
2152 | for(tb = 0; tb < steps; tb++) { | |
2153 | x = x0 - tb * dx - dx/2; | |
029cd327 | 2154 | tbIndex = CookTimeBinIndex(plane, tb); |
5443e65e | 2155 | |
029cd327 | 2156 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2157 | ppl->SetYmax(ymax,ymaxsensitive); |
2158 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2159 | ppl->SetHoles(holes); | |
5443e65e | 2160 | InsertLayer(ppl); |
2161 | } | |
029cd327 | 2162 | tbIndex = CookTimeBinIndex(plane, steps); |
5443e65e | 2163 | x = (x - dx/2 + xbottom)/2; |
2164 | dx = 2*(x-xbottom); | |
029cd327 | 2165 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2166 | ppl->SetYmax(ymax,ymaxsensitive); |
2167 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2168 | ppl->SetHoles(holes); | |
5443e65e | 2169 | InsertLayer(ppl); |
2170 | ||
2171 | // Pad Plane | |
029cd327 | 2172 | xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; |
2173 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
3c625a9b | 2174 | ppl->SetYmax(ymax,ymaxsensitive); |
2175 | ppl->SetZ(zc, zmax,zmax); | |
2176 | ppl->SetHoles(holes); | |
5443e65e | 2177 | InsertLayer(ppl); |
2178 | ||
2179 | // Rohacell | |
2180 | xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; | |
029cd327 | 2181 | steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2182 | for(Int_t i=0; i<steps; i++) { |
2183 | x = xin + i*dx + dx/2; | |
029cd327 | 2184 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
3c625a9b | 2185 | ppl->SetYmax(ymax,ymaxsensitive); |
2186 | ppl->SetZ(zc, zmax,zmax); | |
2187 | ppl->SetHoles(holes); | |
5443e65e | 2188 | InsertLayer(ppl); |
2189 | } | |
2190 | ||
2191 | // Space between the chambers, air | |
2192 | xin = xout; xout = xtrd + (plane + 1) * dxPlane; | |
029cd327 | 2193 | steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2194 | for(Int_t i=0; i<steps; i++) { |
2195 | x = xin + i*dx + dx/2; | |
029cd327 | 2196 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2197 | InsertLayer(ppl); |
2198 | } | |
2199 | } | |
2200 | ||
2201 | // Space between the TRD and RICH | |
2202 | Double_t xRICH = 500.; | |
2203 | xin = xout; xout = xRICH; | |
029cd327 | 2204 | steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2205 | for(Int_t i=0; i<steps; i++) { |
2206 | x = xin + i*dx + dx/2; | |
029cd327 | 2207 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2208 | InsertLayer(ppl); |
2209 | } | |
2210 | ||
2211 | MapTimeBinLayers(); | |
029cd327 | 2212 | delete [] zc; |
2213 | delete [] zmax; | |
5443e65e | 2214 | |
2215 | } | |
2216 | ||
2217 | //______________________________________________________ | |
2218 | ||
029cd327 | 2219 | Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t localTB) const |
5443e65e | 2220 | { |
2221 | // | |
2222 | // depending on the digitization parameters calculates "global" | |
029cd327 | 2223 | // time bin index for timebin <localTB> in plane <plane> |
5443e65e | 2224 | // |
2225 | ||
2226 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2227 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2228 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); | |
2229 | ||
2230 | Int_t tbAmp = fPar->GetTimeBefore(); | |
2231 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 2232 | if(kTRUE) maxAmp = 0; // intentional until we change parameter class |
5443e65e | 2233 | Int_t tbDrift = fPar->GetTimeMax(); |
2234 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
2235 | ||
029cd327 | 2236 | Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); |
5443e65e | 2237 | |
029cd327 | 2238 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); |
5443e65e | 2239 | |
029cd327 | 2240 | if((localTB < 0) && |
2241 | (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; | |
2242 | if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; | |
5443e65e | 2243 | |
2244 | return gtb; | |
2245 | ||
2246 | ||
2247 | } | |
2248 | ||
2249 | //______________________________________________________ | |
2250 | ||
2251 | void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() | |
2252 | { | |
2253 | // | |
2254 | // For all sensitive time bins sets corresponding layer index | |
2255 | // in the array fTimeBins | |
2256 | // | |
2257 | ||
2258 | Int_t index; | |
2259 | ||
2260 | for(Int_t i = 0; i < fN; i++) { | |
2261 | index = fLayers[i]->GetTimeBinIndex(); | |
2262 | ||
2263 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); | |
2264 | ||
2265 | if(index < 0) continue; | |
029cd327 | 2266 | if(index >= (Int_t) kMaxTimeBinIndex) { |
5443e65e | 2267 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); |
2268 | printf(" index %d exceeds allowed maximum of %d!\n", | |
029cd327 | 2269 | index, kMaxTimeBinIndex-1); |
5443e65e | 2270 | continue; |
2271 | } | |
2272 | fTimeBinIndex[index] = i; | |
2273 | } | |
2274 | ||
2275 | Double_t x1, dx1, x2, dx2, gap; | |
2276 | ||
2277 | for(Int_t i = 0; i < fN-1; i++) { | |
2278 | x1 = fLayers[i]->GetX(); | |
2279 | dx1 = fLayers[i]->GetdX(); | |
2280 | x2 = fLayers[i+1]->GetX(); | |
2281 | dx2 = fLayers[i+1]->GetdX(); | |
2282 | gap = (x2 - dx2/2) - (x1 + dx1/2); | |
2283 | if(gap < -0.01) { | |
2284 | printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); | |
2285 | printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); | |
2286 | } | |
2287 | if(gap > 0.01) { | |
2288 | printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); | |
2289 | printf(" (%f - %f) - (%f + %f) = %f\n", | |
a9814c09 | 2290 | x2, dx2/2, x1, dx1, gap); |
5443e65e | 2291 | } |
2292 | } | |
2293 | } | |
2294 | ||
2295 | ||
2296 | //______________________________________________________ | |
2297 | ||
2298 | ||
2299 | Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const | |
2300 | { | |
2301 | // | |
2302 | // Returns the number of time bin which in radial position is closest to <x> | |
2303 | // | |
2304 | ||
2305 | if(x >= fLayers[fN-1]->GetX()) return fN-1; | |
2306 | if(x <= fLayers[0]->GetX()) return 0; | |
2307 | ||
2308 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2309 | for (; b<e; m=(b+e)/2) { | |
2310 | if (x > fLayers[m]->GetX()) b=m+1; | |
2311 | else e=m; | |
2312 | } | |
2313 | if(TMath::Abs(x - fLayers[m]->GetX()) > | |
2314 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; | |
2315 | else return m; | |
2316 | ||
2317 | } | |
2318 | ||
2319 | //______________________________________________________ | |
2320 | ||
2321 | Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const | |
2322 | { | |
2323 | // | |
2324 | // Returns number of the innermost SENSITIVE propagation layer | |
2325 | // | |
2326 | ||
2327 | return GetLayerNumber(0); | |
2328 | } | |
2329 | ||
2330 | //______________________________________________________ | |
2331 | ||
2332 | Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const | |
2333 | { | |
2334 | // | |
2335 | // Returns number of the outermost SENSITIVE time bin | |
2336 | // | |
2337 | ||
2338 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2339 | } |
2340 | ||
5443e65e | 2341 | //______________________________________________________ |
2342 | ||
2343 | Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const | |
2344 | { | |
2345 | // | |
2346 | // Returns number of SENSITIVE time bins | |
2347 | // | |
2348 | ||
2349 | Int_t tb, layer; | |
029cd327 | 2350 | for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { |
5443e65e | 2351 | layer = GetLayerNumber(tb); |
2352 | if(layer>=0) break; | |
2353 | } | |
2354 | return tb+1; | |
2355 | } | |
2356 | ||
2357 | //______________________________________________________ | |
2358 | ||
2359 | void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) | |
2360 | { | |
2361 | // | |
2362 | // Insert layer <pl> in fLayers array. | |
2363 | // Layers are sorted according to X coordinate. | |
2364 | ||
029cd327 | 2365 | if ( fN == ((Int_t) kMaxLayersPerSector)) { |
5443e65e | 2366 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); |
2367 | return; | |
2368 | } | |
2369 | if (fN==0) {fLayers[fN++] = pl; return;} | |
2370 | Int_t i=Find(pl->GetX()); | |
2371 | ||
2372 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
2373 | fLayers[i]=pl; fN++; | |
2374 | ||
2375 | } | |
2376 | ||
2377 | //______________________________________________________ | |
2378 | ||
2379 | Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const | |
2380 | { | |
2381 | // | |
2382 | // Returns index of the propagation layer nearest to X | |
2383 | // | |
2384 | ||
2385 | if (x <= fLayers[0]->GetX()) return 0; | |
2386 | if (x > fLayers[fN-1]->GetX()) return fN; | |
2387 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2388 | for (; b<e; m=(b+e)/2) { | |
2389 | if (x > fLayers[m]->GetX()) b=m+1; | |
2390 | else e=m; | |
2391 | } | |
2392 | return m; | |
2393 | } | |
2394 | ||
3c625a9b | 2395 | //______________________________________________________ |
2396 | void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) | |
2397 | { | |
2398 | // | |
2399 | // set centers and the width of sectors | |
2400 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ | |
2401 | fZc[icham] = center[icham]; | |
2402 | fZmax[icham] = w[icham]; | |
2403 | fZmaxSensitive[icham] = wsensitive[icham]; | |
2404 | // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); | |
2405 | } | |
2406 | } | |
5443e65e | 2407 | //______________________________________________________ |
2408 | ||
3c625a9b | 2409 | void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) |
2410 | { | |
2411 | // | |
2412 | // set centers and the width of sectors | |
2413 | fHole = kFALSE; | |
2414 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ | |
2415 | fIsHole[icham] = holes[icham]; | |
2416 | if (holes[icham]) fHole = kTRUE; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | ||
2421 | ||
5443e65e | 2422 | void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( |
029cd327 | 2423 | Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, |
a9814c09 | 2424 | Bool_t &lookForCluster) const |
5443e65e | 2425 | { |
2426 | // | |
029cd327 | 2427 | // Returns radial step <dx>, density <rho>, rad. length <radLength>, |
5443e65e | 2428 | // and sensitivity <lookForCluster> in point <y,z> |
2429 | // | |
2430 | ||
2431 | dx = fdX; | |
2432 | rho = fRho; | |
029cd327 | 2433 | radLength = fX0; |
5443e65e | 2434 | lookForCluster = kFALSE; |
3c625a9b | 2435 | // |
2436 | // check dead regions in sensitive volume | |
5443e65e | 2437 | if(fTimeBinIndex >= 0) { |
3c625a9b | 2438 | // |
2439 | Int_t zone=-1; | |
029cd327 | 2440 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { |
3c625a9b | 2441 | if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){ |
2442 | zone = ch; | |
2443 | lookForCluster = !(fIsHole[zone]); | |
2444 | if(TMath::Abs(y) > fYmaxSensitive){ | |
2445 | lookForCluster = kFALSE; | |
2446 | } | |
2447 | if (fIsHole[zone]) { | |
2448 | //if hole | |
2449 | rho = 1.29e-3; | |
2450 | radLength = 36.66; | |
2451 | } | |
2452 | } | |
5443e65e | 2453 | } |
3c625a9b | 2454 | return; |
5443e65e | 2455 | } |
3c625a9b | 2456 | // |
2457 | // | |
5443e65e | 2458 | // check hole |
3c625a9b | 2459 | if (fHole==kFALSE) return; |
2460 | // | |
2461 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { | |
2462 | if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){ | |
2463 | if (fIsHole[ch]) { | |
2464 | //if hole | |
2465 | rho = 1.29e-3; | |
2466 | radLength = 36.66; | |
2467 | } | |
2468 | } | |
2469 | } | |
5443e65e | 2470 | return; |
2471 | } | |
2472 | ||
3c625a9b | 2473 | Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const |
2474 | { | |
2475 | // | |
2476 | // | |
2477 | if (fTimeBinIndex < 0) return -20; //unknown | |
2478 | Int_t zone=-10; // dead zone | |
2479 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { | |
2480 | if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) | |
2481 | zone = ch; | |
2482 | } | |
2483 | return zone; | |
2484 | } | |
2485 | ||
2486 | ||
5443e65e | 2487 | //______________________________________________________ |
2488 | ||
2489 | void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, | |
a9814c09 | 2490 | UInt_t index) { |
5443e65e | 2491 | |
2492 | // Insert cluster in cluster array. | |
2493 | // Clusters are sorted according to Y coordinate. | |
2494 | ||
2495 | if(fTimeBinIndex < 0) { | |
2496 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); | |
2497 | return; | |
2498 | } | |
2499 | ||
029cd327 | 2500 | if (fN== (Int_t) kMaxClusterPerTimeBin) { |
5443e65e | 2501 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); |
2502 | return; | |
2503 | } | |
2504 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} | |
2505 | Int_t i=Find(c->GetY()); | |
2506 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); | |
2507 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); | |
2508 | fIndex[i]=index; fClusters[i]=c; fN++; | |
2509 | } | |
2510 | ||
2511 | //______________________________________________________ | |
2512 | ||
2513 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { | |
2514 | ||
2515 | // Returns index of the cluster nearest in Y | |
2516 | ||
2517 | if (y <= fClusters[0]->GetY()) return 0; | |
2518 | if (y > fClusters[fN-1]->GetY()) return fN; | |
2519 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2520 | for (; b<e; m=(b+e)/2) { | |
2521 | if (y > fClusters[m]->GetY()) b=m+1; | |
2522 | else e=m; | |
2523 | } | |
2524 | return m; | |
2525 | } | |
2526 | ||
fd621f36 | 2527 | //--------------------------------------------------------- |
5443e65e | 2528 | |
fd621f36 | 2529 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { |
2530 | // | |
2531 | // Returns correction factor for tilted pads geometry | |
2532 | // | |
5443e65e | 2533 | |
fd621f36 | 2534 | Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); |
2535 | Int_t det = c->GetDetector(); | |
2536 | Int_t plane = fGeom->GetPlane(det); | |
b3a5a838 | 2537 | |
c5a8e3df | 2538 | //if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; |
2539 | if((plane == 0) || (plane == 2) || (plane == 4)) h01=-h01; | |
b8dc2353 | 2540 | |
2541 | if(fNoTilt) h01 = 0; | |
fd621f36 | 2542 | |
2543 | return h01; | |
2544 | } | |
5443e65e | 2545 | |
c630aafd | 2546 | |
eab5961e | 2547 | void AliTRDtracker::CookdEdxTimBin(AliTRDtrack& TRDtrack) |
2548 | { | |
2549 | // *** ADDED TO GET MORE INFORMATION FOR TRD PID ---- PS | |
2550 | // This is setting fdEdxPlane and fTimBinPlane | |
2551 | // Sums up the charge in each plane for track TRDtrack and also get the | |
2552 | // Time bin for Max. Cluster | |
2553 | // Prashant Shukla (shukla@physi.uni-heidelberg.de) | |
2554 | ||
2555 | // const Int_t kNPlane = AliTRDgeometry::Nplan(); | |
2556 | // const Int_t kNPlane = 6; | |
2557 | Double_t clscharge[kNPlane], maxclscharge[kNPlane]; | |
2558 | Int_t nCluster[kNPlane], timebin[kNPlane]; | |
2559 | ||
2560 | //Initialization of cluster charge per plane. | |
2561 | for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2562 | clscharge[iPlane] = 0.0; | |
2563 | nCluster[iPlane] = 0; | |
2564 | timebin[iPlane] = -1; | |
2565 | maxclscharge[iPlane] = 0.0; | |
2566 | } | |
2567 | ||
2568 | // Loop through all clusters associated to track TRDtrack | |
2569 | Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack | |
2570 | for (Int_t iClus = 0; iClus < nClus; iClus++) { | |
2571 | Double_t charge = TRDtrack.GetClusterdQdl(iClus); | |
2572 | Int_t index = TRDtrack.GetClusterIndex(iClus); | |
2573 | AliTRDcluster *TRDcluster = (AliTRDcluster *) GetCluster(index); | |
2574 | if (!TRDcluster) continue; | |
2575 | Int_t tb = TRDcluster->GetLocalTimeBin(); | |
2576 | if (!tb) continue; | |
2577 | Int_t detector = TRDcluster->GetDetector(); | |
2578 | Int_t iPlane = fGeom->GetPlane(detector); | |
2579 | clscharge[iPlane] = clscharge[iPlane]+charge; | |
2580 | if(charge > maxclscharge[iPlane]) { | |
2581 | maxclscharge[iPlane] = charge; | |
2582 | timebin[iPlane] = tb; | |
2583 | } | |
2584 | nCluster[iPlane]++; | |
2585 | } // end of loop over cluster | |
2586 | ||
2587 | // Setting the fdEdxPlane and fTimBinPlane variabales | |
2588 | Double_t Total_ch = 0; | |
2589 | for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2590 | if (nCluster[iPlane]) clscharge[iPlane] /= nCluster[iPlane]; | |
2591 | TRDtrack.SetPIDsignals(clscharge[iPlane], iPlane); | |
2592 | TRDtrack.SetPIDTimBin(timebin[iPlane], iPlane); | |
2593 | Total_ch= Total_ch+clscharge[iPlane]; | |
2594 | } | |
2595 | // Int_t i; | |
2596 | // Int_t nc=TRDtrack.GetNumberOfClusters(); | |
2597 | // Float_t dedx=0; | |
2598 | // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i); | |
2599 | // dedx /= nc; | |
2600 | // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2601 | // TRDtrack.SetPIDsignals(dedx, iPlane); | |
2602 | // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane); | |
2603 | // } | |
2604 | ||
2605 | } // end of function | |
2606 | ||
c630aafd | 2607 | |
2608 | ||
2609 | ||
2610 |