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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 | // // | |
c6f438c0 | 20 | // The standard TRD tracker // |
21 | // Based on Kalman filltering approach // | |
029cd327 | 22 | // // |
4551ea7c | 23 | // Authors: // |
24 | // M. Ivanov (Marian.Ivanov@cern.ch) // | |
4551ea7c | 25 | // // |
029cd327 | 26 | /////////////////////////////////////////////////////////////////////////////// |
27 | ||
46d29e70 | 28 | #include <TBranch.h> |
a1e17193 | 29 | #include <TFile.h> |
4551ea7c | 30 | #include <TGraph.h> |
a1e17193 | 31 | #include <TLinearFitter.h> |
32 | #include <TObjArray.h> | |
33 | #include <TROOT.h> | |
34 | #include <TTree.h> | |
35 | #include <TTreeStream.h> | |
4551ea7c | 36 | |
af885e0f | 37 | #include "AliESDEvent.h" |
f3f19a6e | 38 | #include "AliESDtrack.h" |
4551ea7c | 39 | #include "AliAlignObj.h" |
40 | #include "AliRieman.h" | |
41 | #include "AliTrackPointArray.h" | |
46d29e70 | 42 | |
46d29e70 | 43 | #include "AliTRDgeometry.h" |
a5cadd36 | 44 | #include "AliTRDpadPlane.h" |
0b2318ec | 45 | #include "AliTRDgeometry.h" |
46d29e70 | 46 | #include "AliTRDcluster.h" |
47 | #include "AliTRDtrack.h" | |
75bd7f81 | 48 | #include "AliTRDseed.h" |
3551db50 | 49 | #include "AliTRDcalibDB.h" |
50 | #include "AliTRDCommonParam.h" | |
46d29e70 | 51 | #include "AliTRDtracker.h" |
7b580082 | 52 | #include "AliTRDReconstructor.h" |
d20df6fc | 53 | #include "AliTRDrecoParam.h" |
082a2283 | 54 | #include "AliTRDCalibraFillHisto.h" |
55 | ||
7e448bcc | 56 | ClassImp(AliTRDtracker) |
46d29e70 | 57 | |
b08a2e7e | 58 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; // |
59 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; // | |
60 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.0; // | |
0c349049 | 61 | const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle |
7e448bcc | 62 | const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation |
7ad19338 | 63 | |
75bd7f81 | 64 | //_____________________________________________________________________________ |
3a039a31 | 65 | AliTRDtracker::AliTRDtracker(AliTRDReconstructor *rec) |
4e009ce4 | 66 | :AliTracker() |
3a039a31 | 67 | ,fReconstructor(rec) |
a4cf6278 | 68 | ,fGeom(0) |
69 | ,fNclusters(0) | |
70 | ,fClusters(0) | |
71 | ,fNseeds(0) | |
72 | ,fSeeds(0) | |
73 | ,fNtracks(0) | |
74 | ,fTracks(0) | |
75 | ,fTimeBinsPerPlane(0) | |
76 | ,fAddTRDseeds(kFALSE) | |
77 | ,fNoTilt(kFALSE) | |
4e009ce4 | 78 | ,fHBackfit(0x0) |
79 | ,fHClSearch(0x0) | |
80 | ,fHRefit(0x0) | |
81 | ,fHX(0x0) | |
82 | ,fHNCl(0x0) | |
83 | ,fHNClTrack(0x0) | |
84 | ,fHMinYPos(0x0) | |
85 | ,fHMinYNeg(0x0) | |
86 | ,fHMinZ(0x0) | |
87 | ,fHMinD(0x0) | |
88 | ,fHDeltaX(0x0) | |
89 | ,fHXCl(0x0) | |
4e009ce4 | 90 | ,fDebugStreamer(0) |
89f05372 | 91 | { |
75bd7f81 | 92 | // |
b7a0917f | 93 | // Default constructor |
75bd7f81 | 94 | // |
b7a0917f | 95 | |
4551ea7c | 96 | for (Int_t i = 0; i < kTrackingSectors; i++) { |
97 | fTrSec[i] = 0; | |
98 | } | |
75bd7f81 | 99 | |
7e448bcc | 100 | InitLogHists(); |
4e009ce4 | 101 | |
89f05372 | 102 | } |
75bd7f81 | 103 | |
104 | //_____________________________________________________________________________ | |
6c94f330 | 105 | AliTRDtracker::AliTRDtracker(const AliTRDtracker &t) |
106 | :AliTracker(t) | |
3a039a31 | 107 | ,fReconstructor(t.fReconstructor) |
a4cf6278 | 108 | ,fGeom(0) |
109 | ,fNclusters(0) | |
110 | ,fClusters(0) | |
111 | ,fNseeds(0) | |
112 | ,fSeeds(0) | |
113 | ,fNtracks(0) | |
114 | ,fTracks(0) | |
115 | ,fTimeBinsPerPlane(0) | |
116 | ,fAddTRDseeds(kFALSE) | |
117 | ,fNoTilt(kFALSE) | |
4e009ce4 | 118 | ,fHBackfit(0x0) |
119 | ,fHClSearch(0x0) | |
120 | ,fHRefit(0x0) | |
121 | ,fHX(0x0) | |
122 | ,fHNCl(0x0) | |
123 | ,fHNClTrack(0x0) | |
124 | ,fHMinYPos(0x0) | |
125 | ,fHMinYNeg(0x0) | |
126 | ,fHMinZ(0x0) | |
127 | ,fHMinD(0x0) | |
128 | ,fHDeltaX(0x0) | |
129 | ,fHXCl(0x0) | |
ad670fba | 130 | ,fDebugStreamer(0) |
6c94f330 | 131 | { |
ad670fba | 132 | // |
133 | // Copy constructor | |
134 | // | |
4e009ce4 | 135 | |
ad670fba | 136 | } |
137 | ||
138 | //_____________________________________________________________________________ | |
3a039a31 | 139 | AliTRDtracker::AliTRDtracker(const TFile */*geomfile*/, AliTRDReconstructor *rec) |
ad670fba | 140 | :AliTracker() |
3a039a31 | 141 | ,fReconstructor(rec) |
a4cf6278 | 142 | ,fGeom(0) |
143 | ,fNclusters(0) | |
144 | ,fClusters(new TObjArray(2000)) | |
145 | ,fNseeds(0) | |
146 | ,fSeeds(new TObjArray(2000)) | |
147 | ,fNtracks(0) | |
148 | ,fTracks(new TObjArray(1000)) | |
149 | ,fTimeBinsPerPlane(0) | |
150 | ,fAddTRDseeds(kFALSE) | |
151 | ,fNoTilt(kFALSE) | |
4e009ce4 | 152 | ,fHBackfit(0x0) |
153 | ,fHClSearch(0x0) | |
154 | ,fHRefit(0x0) | |
155 | ,fHX(0x0) | |
156 | ,fHNCl(0x0) | |
157 | ,fHNClTrack(0x0) | |
158 | ,fHMinYPos(0x0) | |
159 | ,fHMinYNeg(0x0) | |
160 | ,fHMinZ(0x0) | |
161 | ,fHMinD(0x0) | |
162 | ,fHDeltaX(0x0) | |
163 | ,fHXCl(0x0) | |
ad670fba | 164 | ,fDebugStreamer(0) |
46d29e70 | 165 | { |
5443e65e | 166 | // |
167 | // Main constructor | |
168 | // | |
b8dc2353 | 169 | |
4551ea7c | 170 | TDirectory *savedir = gDirectory; |
46d29e70 | 171 | |
f162af62 | 172 | fGeom = new AliTRDgeometry(); |
c630aafd | 173 | |
4551ea7c | 174 | for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
439c63c8 | 175 | Int_t trS = geomS; |
4551ea7c | 176 | fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS); |
5443e65e | 177 | } |
4551ea7c | 178 | |
f162af62 | 179 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); |
7ad19338 | 180 | Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); |
4551ea7c | 181 | if (tiltAngle < 0.1) { |
b8dc2353 | 182 | fNoTilt = kTRUE; |
183 | } | |
184 | ||
fc88348b | 185 | if (!AliTRDcalibDB::Instance()) { |
186 | AliFatal("Could not get calibration object"); | |
187 | } | |
188 | fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); | |
46d29e70 | 189 | |
4551ea7c | 190 | fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); |
0a29d0f1 | 191 | |
9c9d2487 | 192 | savedir->cd(); |
7e448bcc | 193 | |
194 | InitLogHists(); | |
75bd7f81 | 195 | |
5443e65e | 196 | } |
46d29e70 | 197 | |
75bd7f81 | 198 | //_____________________________________________________________________________ |
5443e65e | 199 | AliTRDtracker::~AliTRDtracker() |
46d29e70 | 200 | { |
029cd327 | 201 | // |
202 | // Destructor of AliTRDtracker | |
203 | // | |
204 | ||
89f05372 | 205 | if (fClusters) { |
206 | fClusters->Delete(); | |
207 | delete fClusters; | |
208 | } | |
4551ea7c | 209 | |
89f05372 | 210 | if (fTracks) { |
211 | fTracks->Delete(); | |
212 | delete fTracks; | |
213 | } | |
4551ea7c | 214 | |
89f05372 | 215 | if (fSeeds) { |
216 | fSeeds->Delete(); | |
217 | delete fSeeds; | |
218 | } | |
4551ea7c | 219 | |
f162af62 | 220 | if (fGeom) { |
221 | delete fGeom; | |
222 | } | |
0a29d0f1 | 223 | |
4551ea7c | 224 | for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
029cd327 | 225 | delete fTrSec[geomS]; |
5443e65e | 226 | } |
4551ea7c | 227 | |
7ad19338 | 228 | if (fDebugStreamer) { |
7ad19338 | 229 | delete fDebugStreamer; |
230 | } | |
9c9d2487 | 231 | |
75bd7f81 | 232 | } |
59393e34 | 233 | |
75bd7f81 | 234 | //_____________________________________________________________________________ |
235 | Int_t AliTRDtracker::LocalToGlobalID(Int_t lid) | |
236 | { | |
59393e34 | 237 | // |
75bd7f81 | 238 | // Transform internal TRD ID to global detector ID |
59393e34 | 239 | // |
75bd7f81 | 240 | |
053767a4 | 241 | Int_t isector = fGeom->GetSector(lid); |
242 | Int_t istack = fGeom->GetStack(lid); | |
243 | Int_t ilayer = fGeom->GetLayer(lid); | |
4551ea7c | 244 | |
ae079791 | 245 | AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; |
053767a4 | 246 | switch (ilayer) { |
59393e34 | 247 | case 0: |
ae079791 | 248 | iLayer = AliGeomManager::kTRD1; |
59393e34 | 249 | break; |
250 | case 1: | |
ae079791 | 251 | iLayer = AliGeomManager::kTRD2; |
59393e34 | 252 | break; |
253 | case 2: | |
ae079791 | 254 | iLayer = AliGeomManager::kTRD3; |
59393e34 | 255 | break; |
256 | case 3: | |
ae079791 | 257 | iLayer = AliGeomManager::kTRD4; |
59393e34 | 258 | break; |
259 | case 4: | |
ae079791 | 260 | iLayer = AliGeomManager::kTRD5; |
59393e34 | 261 | break; |
262 | case 5: | |
ae079791 | 263 | iLayer = AliGeomManager::kTRD6; |
59393e34 | 264 | break; |
265 | }; | |
4551ea7c | 266 | |
053767a4 | 267 | Int_t modId = isector * fGeom->Nstack() + istack; |
ae079791 | 268 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); |
75bd7f81 | 269 | |
59393e34 | 270 | return volid; |
75bd7f81 | 271 | |
59393e34 | 272 | } |
273 | ||
75bd7f81 | 274 | //_____________________________________________________________________________ |
275 | Int_t AliTRDtracker::GlobalToLocalID(Int_t gid) | |
276 | { | |
59393e34 | 277 | // |
75bd7f81 | 278 | // Transform global detector ID to local detector ID |
59393e34 | 279 | // |
75bd7f81 | 280 | |
4551ea7c | 281 | Int_t modId = 0; |
ae079791 | 282 | AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId); |
4551ea7c | 283 | |
053767a4 | 284 | Int_t isector = modId / fGeom->Nstack(); |
285 | Int_t istack = modId % fGeom->Nstack(); | |
286 | Int_t iLayer = -1; | |
4551ea7c | 287 | |
59393e34 | 288 | switch (layerId) { |
ae079791 | 289 | case AliGeomManager::kTRD1: |
6c94f330 | 290 | iLayer = 0; |
59393e34 | 291 | break; |
ae079791 | 292 | case AliGeomManager::kTRD2: |
6c94f330 | 293 | iLayer = 1; |
59393e34 | 294 | break; |
ae079791 | 295 | case AliGeomManager::kTRD3: |
6c94f330 | 296 | iLayer = 2; |
59393e34 | 297 | break; |
ae079791 | 298 | case AliGeomManager::kTRD4: |
6c94f330 | 299 | iLayer = 3; |
59393e34 | 300 | break; |
ae079791 | 301 | case AliGeomManager::kTRD5: |
6c94f330 | 302 | iLayer = 4; |
59393e34 | 303 | break; |
ae079791 | 304 | case AliGeomManager::kTRD6: |
6c94f330 | 305 | iLayer = 5; |
59393e34 | 306 | break; |
307 | default: | |
6c94f330 | 308 | iLayer =-1; |
59393e34 | 309 | } |
4551ea7c | 310 | |
311 | if (iLayer < 0) { | |
312 | return -1; | |
313 | } | |
314 | ||
053767a4 | 315 | Int_t lid = fGeom->GetDetector(iLayer,istack,isector); |
75bd7f81 | 316 | |
59393e34 | 317 | return lid; |
59393e34 | 318 | |
75bd7f81 | 319 | } |
59393e34 | 320 | |
75bd7f81 | 321 | //_____________________________________________________________________________ |
322 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) | |
323 | { | |
9c9d2487 | 324 | // |
325 | // Rotates the track when necessary | |
326 | // | |
327 | ||
328 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
4551ea7c | 329 | Double_t y = track->GetY(); |
330 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
9c9d2487 | 331 | |
4551ea7c | 332 | if (y > ymax) { |
4551ea7c | 333 | if (!track->Rotate( alpha)) { |
334 | return kFALSE; | |
335 | } | |
336 | } | |
337 | else if (y < -ymax) { | |
4551ea7c | 338 | if (!track->Rotate(-alpha)) { |
339 | return kFALSE; | |
340 | } | |
9c9d2487 | 341 | } |
342 | ||
343 | return kTRUE; | |
9c9d2487 | 344 | |
75bd7f81 | 345 | } |
46e2d86c | 346 | |
75bd7f81 | 347 | //_____________________________________________________________________________ |
348 | AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane | |
349 | , Int_t timebin, UInt_t &index) | |
350 | { | |
46e2d86c | 351 | // |
75bd7f81 | 352 | // Try to find cluster in the backup list |
46e2d86c | 353 | // |
75bd7f81 | 354 | |
4551ea7c | 355 | AliTRDcluster *cl =0; |
6c94f330 | 356 | Int_t *indexes = track->GetBackupIndexes(); |
4551ea7c | 357 | |
358 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { | |
359 | if (indexes[i] == 0) { | |
360 | break; | |
361 | } | |
362 | AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); | |
363 | if (!cli) { | |
364 | break; | |
365 | } | |
366 | if (cli->GetLocalTimeBin() != timebin) { | |
367 | continue; | |
368 | } | |
053767a4 | 369 | Int_t ilayer = fGeom->GetLayer(cli->GetDetector()); |
370 | if (ilayer == plane) { | |
4551ea7c | 371 | cl = cli; |
7ad19338 | 372 | index = indexes[i]; |
46e2d86c | 373 | break; |
374 | } | |
375 | } | |
75bd7f81 | 376 | |
46e2d86c | 377 | return cl; |
46e2d86c | 378 | |
75bd7f81 | 379 | } |
3c625a9b | 380 | |
75bd7f81 | 381 | //_____________________________________________________________________________ |
4551ea7c | 382 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track) |
75bd7f81 | 383 | { |
3c625a9b | 384 | // |
75bd7f81 | 385 | // Return last updated plane |
386 | // | |
387 | ||
4551ea7c | 388 | Int_t lastplane = 0; |
389 | Int_t *indexes = track->GetBackupIndexes(); | |
390 | ||
391 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { | |
392 | AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); | |
393 | if (!cli) { | |
394 | break; | |
395 | } | |
053767a4 | 396 | Int_t ilayer = fGeom->GetLayer(cli->GetDetector()); |
397 | if (ilayer > lastplane) { | |
398 | lastplane = ilayer; | |
3c625a9b | 399 | } |
400 | } | |
75bd7f81 | 401 | |
3c625a9b | 402 | return lastplane; |
75bd7f81 | 403 | |
3c625a9b | 404 | } |
5443e65e | 405 | |
c630aafd | 406 | //_____________________________________________________________________________ |
af885e0f | 407 | Int_t AliTRDtracker::PropagateBack(AliESDEvent *event) |
75bd7f81 | 408 | { |
c630aafd | 409 | // |
410 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
411 | // backpropagated by the TPC tracker. Each seed is first propagated | |
412 | // to the TRD, and then its prolongation is searched in the TRD. | |
413 | // If sufficiently long continuation of the track is found in the TRD | |
414 | // the track is updated, otherwise it's stored as originaly defined | |
415 | // by the TPC tracker. | |
416 | // | |
417 | ||
e4f2f73d | 418 | Int_t found = 0; // number of tracks found |
419 | Float_t foundMin = 20.0; | |
4f1c04d3 | 420 | |
e4f2f73d | 421 | Int_t nSeed = event->GetNumberOfTracks(); |
422 | if(!nSeed){ | |
423 | // run stand alone tracking | |
3a039a31 | 424 | if (fReconstructor->IsSeeding()) Clusters2Tracks(event); |
e4f2f73d | 425 | return 0; |
4f1c04d3 | 426 | } |
e4f2f73d | 427 | |
428 | Float_t *quality = new Float_t[nSeed]; | |
429 | Int_t *index = new Int_t[nSeed]; | |
430 | for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { | |
431 | AliESDtrack *seed = event->GetTrack(iSeed); | |
432 | Double_t covariance[15]; | |
433 | seed->GetExternalCovariance(covariance); | |
434 | quality[iSeed] = covariance[0] + covariance[2]; | |
7ad19338 | 435 | } |
e4f2f73d | 436 | // Sort tracks according to covariance of local Y and Z |
437 | TMath::Sort(nSeed,quality,index,kFALSE); | |
7e448bcc | 438 | |
e4f2f73d | 439 | // Backpropagate all seeds |
440 | for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { | |
7e448bcc | 441 | |
e4f2f73d | 442 | // Get the seeds in sorted sequence |
443 | AliESDtrack *seed = event->GetTrack(index[iSeed]); | |
444 | fHBackfit->Fill(0); // All seeds | |
445 | ||
446 | // Check the seed status | |
447 | ULong_t status = seed->GetStatus(); | |
448 | if ((status & AliESDtrack::kTPCout) == 0) { | |
449 | fHBackfit->Fill(1); // TPC outer edge reached | |
450 | continue; | |
451 | } | |
452 | if ((status & AliESDtrack::kTRDout) != 0) { | |
453 | fHBackfit->Fill(2); // TRD outer edge reached (does this happen ?) | |
454 | continue; | |
455 | } | |
456 | ||
457 | // Do the back prolongation | |
458 | Int_t lbl = seed->GetLabel(); | |
459 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
460 | track->SetSeedLabel(lbl); | |
461 | seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup | |
462 | fNseeds++; | |
463 | Float_t p4 = track->GetC(); | |
464 | Int_t expectedClr = FollowBackProlongation(*track); | |
465 | fHBackfit->Fill(3); // Back prolongation done | |
466 | fHX->Fill(track->GetX()); | |
467 | ||
468 | if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) || | |
469 | (track->Pt() > 0.8)) { | |
470 | ||
471 | fHBackfit->Fill(4); | |
472 | ||
473 | // | |
474 | // Make backup for back propagation | |
475 | // | |
476 | ||
477 | Int_t foundClr = track->GetNumberOfClusters(); | |
478 | if (foundClr >= foundMin) { | |
479 | track->CookdEdx(); | |
480 | track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07 | |
481 | CookLabel(track,1 - fgkLabelFraction); | |
482 | if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack()); | |
483 | ||
484 | ||
485 | // Sign only gold tracks | |
486 | if (track->GetChi2() / track->GetNumberOfClusters() < 4) { | |
487 | if ((seed->GetKinkIndex(0) == 0) && | |
488 | (track->Pt() < 1.5)) { | |
489 | UseClusters(track); | |
490 | } | |
491 | } | |
492 | Bool_t isGold = kFALSE; | |
493 | ||
494 | // Full gold track | |
495 | if (track->GetChi2() / track->GetNumberOfClusters() < 5) { | |
496 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
497 | if (track->GetBackupTrack()) { | |
498 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
499 | } | |
500 | isGold = kTRUE; | |
501 | //fHBackfit->Fill() | |
502 | } | |
503 | ||
504 | // Almost gold track | |
505 | if ((!isGold) && (track->GetNCross() == 0) && | |
506 | (track->GetChi2() / track->GetNumberOfClusters() < 7)) { | |
507 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
508 | if (track->GetBackupTrack()) { | |
509 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
510 | } | |
511 | isGold = kTRUE; | |
512 | } | |
513 | ||
514 | if ((!isGold) && (track->GetBackupTrack())) { | |
515 | if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) && ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) { | |
516 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
517 | isGold = kTRUE; | |
518 | } | |
519 | } | |
520 | ||
521 | if ((track->StatusForTOF() > 0) && (track->GetNCross() == 0) && (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) { | |
522 | //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
523 | } | |
524 | } | |
525 | } | |
526 | /**/ | |
527 | ||
528 | /**/ | |
529 | // Debug part of tracking | |
530 | TTreeSRedirector &cstream = *fDebugStreamer; | |
531 | Int_t eventNrInFile = event->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number. | |
3a039a31 | 532 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
e4f2f73d | 533 | if (track->GetBackupTrack()) { |
534 | cstream << "Tracks" | |
535 | << "EventNrInFile=" << eventNrInFile | |
536 | << "ESD.=" << seed | |
537 | << "trd.=" << track | |
538 | << "trdback.=" << track->GetBackupTrack() | |
539 | << "\n"; | |
540 | } | |
541 | else { | |
542 | cstream << "Tracks" | |
543 | << "EventNrInFile=" << eventNrInFile | |
544 | << "ESD.=" << seed | |
545 | << "trd.=" << track | |
546 | << "trdback.=" << track | |
547 | << "\n"; | |
548 | } | |
549 | } | |
550 | /**/ | |
551 | ||
552 | // Propagation to the TOF (I.Belikov) | |
553 | if (track->GetStop() == kFALSE) { | |
554 | fHBackfit->Fill(5); | |
555 | ||
556 | Double_t xtof = 371.0; | |
557 | Double_t xTOF0 = 370.0; | |
558 | ||
559 | Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); | |
560 | if (TMath::Abs(c2) >= 0.99) { | |
561 | fHBackfit->Fill(6); | |
562 | delete track; | |
563 | continue; | |
564 | } | |
565 | ||
566 | PropagateToX(*track,xTOF0,fgkMaxStep); | |
567 | ||
568 | // Energy losses taken to the account - check one more time | |
569 | c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); | |
570 | if (TMath::Abs(c2) >= 0.99) { | |
571 | fHBackfit->Fill(7); | |
572 | delete track; | |
573 | continue; | |
574 | } | |
575 | ||
576 | //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) { | |
577 | // fHBackfit->Fill(7); | |
578 | //delete track; | |
579 | // continue; | |
580 | //} | |
581 | ||
582 | Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha()); | |
583 | Double_t y; | |
584 | track->GetYAt(xtof,GetBz(),y); | |
585 | if (y > ymax) { | |
586 | if (!track->Rotate( AliTRDgeometry::GetAlpha())) { | |
587 | fHBackfit->Fill(8); | |
588 | delete track; | |
589 | continue; | |
590 | } | |
591 | } | |
592 | else if (y < -ymax) { | |
593 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { | |
594 | fHBackfit->Fill(9); | |
595 | delete track; | |
596 | continue; | |
597 | } | |
598 | } | |
599 | ||
600 | if (track->PropagateTo(xtof)) { | |
601 | seed->UpdateTrackParams(track,AliESDtrack::kTRDout); | |
602 | fHBackfit->Fill(10); | |
603 | ||
216b200f | 604 | seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); |
6984f7c1 | 605 | for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { |
606 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { | |
607 | seed->SetTRDslice(track->GetPIDsignals(i,j),i,j); | |
e4f2f73d | 608 | } |
609 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
610 | } | |
611 | //seed->SetTRDtrack(new AliTRDtrack(*track)); | |
612 | if (track->GetNumberOfClusters() > foundMin) { | |
613 | fHBackfit->Fill(11); | |
614 | found++; | |
615 | } | |
616 | } | |
617 | } | |
618 | else { | |
619 | fHBackfit->Fill(12); | |
620 | ||
621 | if ((track->GetNumberOfClusters() > 15) && | |
622 | (track->GetNumberOfClusters() > 0.5*expectedClr)) { | |
623 | seed->UpdateTrackParams(track,AliESDtrack::kTRDout); | |
624 | fHBackfit->Fill(13); | |
625 | ||
626 | //seed->SetStatus(AliESDtrack::kTRDStop); | |
216b200f | 627 | |
628 | seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); | |
6984f7c1 | 629 | for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { |
630 | for (Int_t j = 0; j <AliTRDtrack::kNslice; j++) { | |
631 | seed->SetTRDslice(track->GetPIDsignals(i,j),i,j); | |
e4f2f73d | 632 | } |
633 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
634 | } | |
635 | //seed->SetTRDtrack(new AliTRDtrack(*track)); | |
636 | found++; | |
637 | } | |
638 | } | |
639 | ||
640 | seed->SetTRDQuality(track->StatusForTOF()); | |
641 | seed->SetTRDBudget(track->GetBudget(0)); | |
642 | ||
643 | fHBackfit->Fill(14); | |
644 | delete track; | |
4551ea7c | 645 | } |
7e448bcc | 646 | |
e4f2f73d | 647 | AliInfo(Form("Number of seeds: %d",fNseeds)); |
648 | AliInfo(Form("Number of back propagated TRD tracks: %d",found)); | |
649 | ||
650 | fSeeds->Clear(); | |
651 | fNseeds = 0; | |
652 | ||
653 | delete [] index; | |
654 | delete [] quality; | |
655 | ||
656 | SaveLogHists(); | |
7e448bcc | 657 | |
1e9bb598 | 658 | return 0; |
1e9bb598 | 659 | } |
660 | ||
661 | //_____________________________________________________________________________ | |
af885e0f | 662 | Int_t AliTRDtracker::RefitInward(AliESDEvent *event) |
1e9bb598 | 663 | { |
664 | // | |
665 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
666 | // at the outer part of the TRD. | |
667 | // The tracks are propagated to the innermost time bin | |
668 | // of the TRD and the ESD event is updated | |
669 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
670 | // | |
671 | ||
0c349049 | 672 | //Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
673 | //Float_t foundMin = fgkMinClustersInTrack * timeBins; | |
4551ea7c | 674 | Int_t nseed = 0; |
675 | Int_t found = 0; | |
44dbae42 | 676 | Int_t pidQ = 0; |
4551ea7c | 677 | //Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); |
4f1c04d3 | 678 | AliTRDtrack seed2; |
6c94f330 | 679 | |
bcb6fb78 | 680 | // Calibration fill 2D |
681 | AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); | |
682 | if (!calibra) { | |
683 | AliInfo("Could not get Calibra instance\n"); | |
684 | } | |
685 | ||
1e9bb598 | 686 | Int_t n = event->GetNumberOfTracks(); |
4551ea7c | 687 | for (Int_t i = 0; i < n; i++) { |
688 | ||
689 | AliESDtrack *seed = event->GetTrack(i); | |
690 | new (&seed2) AliTRDtrack(*seed); | |
7e448bcc | 691 | fHRefit->Fill(0); |
692 | ||
4551ea7c | 693 | if (seed2.GetX() < 270.0) { |
694 | seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update | |
7e448bcc | 695 | fHRefit->Fill(1); |
f4e9508c | 696 | continue; |
697 | } | |
698 | ||
4551ea7c | 699 | ULong_t status = seed->GetStatus(); |
700 | if ((status & AliESDtrack::kTRDout) == 0) { | |
7e448bcc | 701 | fHRefit->Fill(2); |
0dd7d129 | 702 | continue; |
703 | } | |
4551ea7c | 704 | if ((status & AliESDtrack::kTRDin) != 0) { |
7e448bcc | 705 | fHRefit->Fill(3); |
0dd7d129 | 706 | continue; |
707 | } | |
7e448bcc | 708 | |
6c94f330 | 709 | nseed++; |
7e448bcc | 710 | fHRefit->Fill(4); |
6c94f330 | 711 | |
4551ea7c | 712 | seed2.ResetCovariance(50.0); |
6c94f330 | 713 | |
4f1c04d3 | 714 | AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); |
4551ea7c | 715 | Int_t *indexes2 = seed2.GetIndexes(); |
7bce990c | 716 | for (Int_t l = 0; l < AliTRDtrack::kNplane;++l) { |
6984f7c1 | 717 | for (Int_t j = 0; j < AliTRDtrack::kNslice;j++) { |
7bce990c | 718 | pt->SetPIDsignals(seed2.GetPIDsignals(l,j),l,j); |
6d45eaef | 719 | } |
7bce990c | 720 | pt->SetPIDTimBin(seed2.GetPIDTimBin(l),l); |
7ad19338 | 721 | } |
eab5961e | 722 | |
4551ea7c | 723 | Int_t *indexes3 = pt->GetBackupIndexes(); |
7bce990c | 724 | for (Int_t l = 0; l < 200;++l) { |
725 | if (indexes2[l] == 0) { | |
4551ea7c | 726 | break; |
727 | } | |
7bce990c | 728 | indexes3[l] = indexes2[l]; |
4551ea7c | 729 | } |
730 | ||
43bfc8af | 731 | FollowProlongation(*pt); |
0c349049 | 732 | pt->CookdEdx(); |
733 | pt->CookdEdxTimBin(seed->GetID()); | |
7eccf2f3 | 734 | |
735 | //calculate PID methods | |
736 | pt->SetPIDMethod(AliTRDtrack::kLQ); | |
0c349049 | 737 | pt->CookPID(pidQ); |
7eccf2f3 | 738 | seed->SetTRDpid(pt->GetPID()); |
ed15ef4f | 739 | seed->SetTRDntracklets(pidQ<<3); |
7eccf2f3 | 740 | |
741 | // update calibration | |
bcb6fb78 | 742 | if(calibra->GetHisto2d()) calibra->UpdateHistograms(pt); |
1e9bb598 | 743 | found++; |
33744e5d | 744 | |
4551ea7c | 745 | Double_t xTPC = 250.0; |
43bfc8af | 746 | if (PropagateToX(*pt,xTPC,fgkMaxStep)) { |
4551ea7c | 747 | seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit); |
7e448bcc | 748 | fHRefit->Fill(5); |
749 | ||
7bce990c | 750 | for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { |
6984f7c1 | 751 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { |
7bce990c | 752 | seed->SetTRDslice(pt->GetPIDsignals(l,j),l,j); |
7eccf2f3 | 753 | } |
7bce990c | 754 | seed->SetTRDTimBin(pt->GetPIDTimBin(l),l); |
7ad19338 | 755 | } |
7eccf2f3 | 756 | } else { |
4551ea7c | 757 | // If not prolongation to TPC - propagate without update |
7e448bcc | 758 | fHRefit->Fill(5); |
7bce990c | 759 | AliTRDtrack *seed2t = new AliTRDtrack(*seed); |
760 | seed2t->ResetCovariance(5.0); | |
761 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2t,seed2t->GetAlpha()); | |
762 | delete seed2t; | |
0c349049 | 763 | |
59393e34 | 764 | if (PropagateToX(*pt2,xTPC,fgkMaxStep)) { |
0c349049 | 765 | pt2->CookdEdx(); |
44dbae42 | 766 | pt2->CookdEdxTimBin(seed->GetID()); |
7eccf2f3 | 767 | seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit); |
768 | fHRefit->Fill(6); | |
7e448bcc | 769 | |
7bce990c | 770 | for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { |
6984f7c1 | 771 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { |
7bce990c | 772 | seed->SetTRDslice(pt2->GetPIDsignals(l,j),l,j); |
7eccf2f3 | 773 | } |
7bce990c | 774 | seed->SetTRDTimBin(pt2->GetPIDTimBin(l),l); |
7ad19338 | 775 | } |
eab5961e | 776 | } |
306e3dc1 | 777 | |
0c349049 | 778 | // Add TRD track to ESDfriendTrack - maybe this tracks are |
779 | // not useful for post-processing - TODO make decision | |
3a039a31 | 780 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
306e3dc1 | 781 | seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/)); |
782 | } | |
7bed16a7 | 783 | delete pt2; |
0c349049 | 784 | |
4551ea7c | 785 | } |
786 | ||
306e3dc1 | 787 | // Add TRD track to ESDfriendTrack |
3a039a31 | 788 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
306e3dc1 | 789 | seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/)); |
790 | } | |
1e9bb598 | 791 | delete pt; |
4551ea7c | 792 | |
eab5961e | 793 | } |
1e9bb598 | 794 | |
33744e5d | 795 | AliInfo(Form("Number of loaded seeds: %d",nseed)); |
796 | AliInfo(Form("Number of found tracks from loaded seeds: %d",found)); | |
1e9bb598 | 797 | |
7e448bcc | 798 | SaveLogHists(); |
0c349049 | 799 | |
c630aafd | 800 | return 0; |
0c349049 | 801 | |
c630aafd | 802 | } |
803 | ||
75bd7f81 | 804 | //_____________________________________________________________________________ |
4551ea7c | 805 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t) |
8979685e | 806 | { |
0c349049 | 807 | // |
808 | // Starting from current position on track=t this function tries | |
809 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
810 | // if a close cluster is found. Returns the number of clusters | |
811 | // expected to be found in sensitive layers | |
812 | // GeoManager used to estimate mean density | |
813 | // | |
4551ea7c | 814 | |
0c349049 | 815 | Int_t sector; |
816 | Int_t lastplane = GetLastPlane(&t); | |
817 | Double_t xx0 = 0.0; | |
818 | Double_t xrho= 0.0; | |
819 | Int_t expectedNumberOfClusters = 0; | |
4551ea7c | 820 | |
0c349049 | 821 | for (Int_t iplane = lastplane; iplane >= 0; iplane--) { |
4551ea7c | 822 | |
0c349049 | 823 | Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); |
824 | Int_t rowlast = GetGlobalTimeBin(0,iplane,0); | |
4551ea7c | 825 | |
0c349049 | 826 | // Propagate track close to the plane if neccessary |
827 | Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX(); | |
828 | if (currentx < (-fgkMaxStep + t.GetX())) { | |
829 | // Propagate closer to chamber - safety space fgkMaxStep | |
830 | if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) { | |
831 | break; | |
832 | } | |
833 | } | |
4551ea7c | 834 | |
0c349049 | 835 | if (!AdjustSector(&t)) { |
836 | break; | |
837 | } | |
4551ea7c | 838 | |
0c349049 | 839 | // Get material budget |
840 | Double_t xyz0[3]; | |
841 | Double_t xyz1[3]; | |
e4f2f73d | 842 | Double_t param[7]; |
0c349049 | 843 | Double_t x; |
844 | Double_t y; | |
845 | Double_t z; | |
4551ea7c | 846 | |
0c349049 | 847 | // Starting global position |
848 | t.GetXYZ(xyz0); | |
849 | // End global position | |
850 | x = fTrSec[0]->GetLayer(row0)->GetX(); | |
851 | if (!t.GetProlongation(x,y,z)) { | |
852 | break; | |
853 | } | |
854 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); | |
855 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
856 | xyz1[2] = z; | |
857 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); | |
858 | xrho= param[0]*param[4]; | |
859 | xx0 = param[1]; // Get mean propagation parameters | |
860 | ||
861 | // Flags for marking the track momentum and direction. The track is | |
862 | // marked only if it has at least 1 cluster picked up in the current | |
863 | // chamber. | |
864 | Bool_t kUPDATED = kFALSE; | |
865 | Bool_t kMARKED = kFALSE; | |
866 | ||
867 | // Propagate and update | |
868 | sector = t.GetSector(); | |
869 | //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) { | |
870 | for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) { | |
871 | ||
872 | // Mark track kinematics | |
873 | if (itime > 10 && kUPDATED && !kMARKED) { | |
874 | t.SetTrackSegmentDirMom(iplane); | |
875 | kMARKED = kTRUE; | |
876 | } | |
877 | ||
878 | Int_t ilayer = GetGlobalTimeBin(0,iplane,itime); | |
879 | expectedNumberOfClusters++; | |
880 | t.SetNExpected(t.GetNExpected() + 1); | |
881 | if (t.GetX() > 345.0) { | |
882 | t.SetNExpectedLast(t.GetNExpectedLast() + 1); | |
883 | } | |
884 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); | |
885 | AliTRDcluster *cl = 0; | |
886 | UInt_t index = 0; | |
887 | Double_t maxChi2 = fgkMaxChi2; | |
888 | x = timeBin.GetX(); | |
889 | ||
890 | if (timeBin) { | |
891 | ||
892 | AliTRDcluster *cl0 = timeBin[0]; | |
893 | if (!cl0) { | |
894 | // No clusters in given time bin | |
895 | continue; | |
4551ea7c | 896 | } |
897 | ||
053767a4 | 898 | Int_t layer = fGeom->GetLayer(cl0->GetDetector()); |
899 | if (layer > lastplane) { | |
0c349049 | 900 | continue; |
901 | } | |
902 | ||
903 | Int_t timebin = cl0->GetLocalTimeBin(); | |
053767a4 | 904 | AliTRDcluster *cl2 = GetCluster(&t,layer,timebin,index); |
0c349049 | 905 | |
906 | if (cl2) { | |
907 | cl = cl2; | |
908 | //Double_t h01 = GetTiltFactor(cl); //I.B's fix | |
909 | //maxChi2=t.GetPredictedChi2(cl,h01); | |
910 | } | |
911 | ||
912 | if (cl) { | |
913 | ||
914 | //if (cl->GetNPads()<5) | |
915 | Double_t dxsample = timeBin.GetdX(); | |
916 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
917 | Double_t h01 = GetTiltFactor(cl); | |
918 | Int_t det = cl->GetDetector(); | |
053767a4 | 919 | Int_t llayer = fGeom->GetLayer(det); |
0c349049 | 920 | |
921 | if (t.GetX() > 345.0) { | |
922 | t.SetNLast(t.GetNLast() + 1); | |
923 | t.SetChi2Last(t.GetChi2Last() + maxChi2); | |
924 | } | |
925 | ||
926 | Double_t xcluster = cl->GetX(); | |
927 | t.PropagateTo(xcluster,xx0,xrho); | |
928 | if (!AdjustSector(&t)) { | |
929 | break; //I.B's fix | |
930 | } | |
931 | ||
932 | maxChi2 = t.GetPredictedChi2(cl,h01); | |
933 | if (maxChi2 < 1e+10) { | |
053767a4 | 934 | if (!t.UpdateMI(cl,maxChi2,index,h01,llayer)) { |
0c349049 | 935 | // ???? |
936 | } | |
937 | else { | |
938 | //SetCluster(cl, GetNumberOfClusters()-1); | |
939 | kUPDATED = kTRUE; | |
940 | } | |
941 | } | |
942 | ||
943 | } | |
944 | ||
945 | } | |
946 | ||
947 | } | |
948 | ||
949 | } | |
950 | ||
951 | return expectedNumberOfClusters; | |
952 | ||
75bd7f81 | 953 | } |
7b580082 | 954 | |
75bd7f81 | 955 | //_____________________________________________________________________________ |
4551ea7c | 956 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t) |
8979685e | 957 | { |
75bd7f81 | 958 | // |
8979685e | 959 | // Starting from current radial position of track <t> this function |
0c349049 | 960 | // extrapolates the track up to the outer timebin and in the sensitive |
8979685e | 961 | // layers confirms prolongation if a close cluster is found. |
962 | // Returns the number of clusters expected to be found in sensitive layers | |
0c349049 | 963 | // Uses the geomanager for material description |
75bd7f81 | 964 | // |
7e448bcc | 965 | // return number of assigned clusters ? |
966 | // | |
967 | ||
4551ea7c | 968 | Int_t sector; |
0c349049 | 969 | |
970 | Double_t xx0 = 0.0; | |
971 | Double_t xrho = 0.0; | |
972 | ||
973 | Float_t ratio0 = 0.0; | |
974 | ||
4551ea7c | 975 | Int_t expectedNumberOfClusters = 0; |
0c349049 | 976 | |
8979685e | 977 | AliTRDtracklet tracklet; |
33744e5d | 978 | |
0c349049 | 979 | const Int_t kNclusters = 1000; |
980 | Int_t clusters[kNclusters]; | |
981 | for (Int_t i = 0; i < kNclusters; i++) { | |
982 | clusters[i] = -1; | |
983 | } | |
984 | ||
bcb6fb78 | 985 | // // Calibration fill 2D |
986 | // AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); | |
987 | // if (!calibra) { | |
988 | // AliInfo("Could not get Calibra instance\n"); | |
989 | // } | |
990 | // if (calibra->GetMITracking()) { | |
991 | // calibra->ResetTrack(); | |
992 | // } | |
77566f2a | 993 | |
0c349049 | 994 | // Loop through the TRD planes |
6984f7c1 | 995 | for (Int_t iplane = 0; iplane < AliTRDtrack::kNplane; iplane++) { |
4551ea7c | 996 | |
0c349049 | 997 | Int_t hb = iplane * 10; |
7e448bcc | 998 | fHClSearch->Fill(hb); |
999 | ||
0c349049 | 1000 | // Get the global time bin numbers for the first an last |
1001 | // local time bin of the given plane | |
4551ea7c | 1002 | Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); |
1003 | Int_t rowlast = GetGlobalTimeBin(0,iplane,0); | |
0c349049 | 1004 | |
1005 | // Get the X coordinates of the propagation layer for the first time bin | |
4551ea7c | 1006 | Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX(); |
1007 | if (currentx < t.GetX()) { | |
7e448bcc | 1008 | fHClSearch->Fill(hb+1); |
4551ea7c | 1009 | continue; |
1010 | } | |
1011 | ||
0c349049 | 1012 | // Propagate closer to the current chamber if neccessary |
4551ea7c | 1013 | if (currentx > (fgkMaxStep + t.GetX())) { |
1014 | if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) { | |
7e448bcc | 1015 | fHClSearch->Fill(hb+2); |
4551ea7c | 1016 | break; |
1017 | } | |
1018 | } | |
0c349049 | 1019 | |
1020 | // Rotate track to adjacent sector if neccessary | |
4551ea7c | 1021 | if (!AdjustSector(&t)) { |
7e448bcc | 1022 | fHClSearch->Fill(hb+3); |
4551ea7c | 1023 | break; |
8979685e | 1024 | } |
0c349049 | 1025 | |
1026 | // Check whether azimuthal angle is getting too large | |
4551ea7c | 1027 | if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) { |
7e448bcc | 1028 | fHClSearch->Fill(hb+4); |
4551ea7c | 1029 | break; |
1030 | } | |
1031 | ||
4551ea7c | 1032 | Double_t xyz0[3]; |
1033 | Double_t xyz1[3]; | |
1034 | Double_t param[7]; | |
1035 | Double_t x; | |
1036 | Double_t y; | |
1037 | Double_t z; | |
0c349049 | 1038 | // Global start position (beginning of chamber) |
4551ea7c | 1039 | t.GetXYZ(xyz0); |
0c349049 | 1040 | // X-position of the end of the chamber |
7b580082 | 1041 | x = fTrSec[0]->GetLayer(rowlast)->GetX(); |
0c349049 | 1042 | // Get local Y and Z at the X-position of the end of the chamber |
4551ea7c | 1043 | if (!t.GetProlongation(x,y,z)) { |
7e448bcc | 1044 | fHClSearch->Fill(hb+5); |
4551ea7c | 1045 | break; |
1046 | } | |
0c349049 | 1047 | // Global end position (end of chamber) |
4551ea7c | 1048 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); |
1049 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
1050 | xyz1[2] = z; | |
0c349049 | 1051 | |
1052 | // Calculate the mean material budget along the path inside the chamber | |
97ccb02b | 1053 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); |
0c349049 | 1054 | // The mean propagation parameters (density*length and radiation length) |
97ccb02b | 1055 | xrho = param[0]*param[4]; |
0c349049 | 1056 | xx0 = param[1]; |
4551ea7c | 1057 | |
0c349049 | 1058 | // Find the clusters and tracklet along the path inside the chamber |
1059 | sector = t.GetSector(); | |
4551ea7c | 1060 | Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet); |
7e448bcc | 1061 | fHNCl->Fill(tracklet.GetN()); |
1062 | ||
0c349049 | 1063 | // Discard if in less than 1/3 of the available timebins |
1064 | // clusters are found | |
4551ea7c | 1065 | if (tracklet.GetN() < GetTimeBinsPerPlane()/3) { |
7e448bcc | 1066 | fHClSearch->Fill(hb+6); |
4551ea7c | 1067 | continue; |
1068 | } | |
1069 | ||
8979685e | 1070 | // |
7b580082 | 1071 | // Propagate and update track |
8979685e | 1072 | // |
4551ea7c | 1073 | for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) { |
4551ea7c | 1074 | Int_t ilayer = GetGlobalTimeBin(0, iplane,itime); |
8979685e | 1075 | expectedNumberOfClusters++; |
27eaf44b | 1076 | t.SetNExpected(t.GetNExpected() + 1); |
4551ea7c | 1077 | if (t.GetX() > 345.0) { |
27eaf44b | 1078 | t.SetNExpectedLast(t.GetNExpectedLast() + 1); |
4551ea7c | 1079 | } |
1080 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); | |
7e448bcc | 1081 | AliTRDcluster *cl = 0; |
4551ea7c | 1082 | UInt_t index = 0; |
1083 | Double_t maxChi2 = fgkMaxChi2; | |
8979685e | 1084 | x = timeBin.GetX(); |
4551ea7c | 1085 | |
8979685e | 1086 | if (timeBin) { |
e4f2f73d | 1087 | if (clusters[ilayer] > 0) { |
1088 | index = clusters[ilayer]; | |
1089 | cl = (AliTRDcluster *)GetCluster(index); | |
1090 | //Double_t h01 = GetTiltFactor(cl); // I.B's fix | |
1091 | //maxChi2=t.GetPredictedChi2(cl,h01); // | |
1092 | } | |
8979685e | 1093 | |
1094 | if (cl) { | |
e4f2f73d | 1095 | //if (cl->GetNPads() < 5) |
1096 | Double_t dxsample = timeBin.GetdX(); | |
1097 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
1098 | Double_t h01 = GetTiltFactor(cl); | |
1099 | Int_t det = cl->GetDetector(); | |
053767a4 | 1100 | Int_t layer = fGeom->GetLayer(det); |
e4f2f73d | 1101 | if (t.GetX() > 345.0) { |
1102 | t.SetNLast(t.GetNLast() + 1); | |
1103 | t.SetChi2Last(t.GetChi2Last() + maxChi2); | |
1104 | } | |
1105 | Double_t xcluster = cl->GetX(); | |
1106 | t.PropagateTo(xcluster,xx0,xrho); | |
1107 | maxChi2 = t.GetPredictedChi2(cl,h01); | |
1108 | ||
1109 | if (maxChi2<1e+10) | |
053767a4 | 1110 | if (!t.UpdateMI(cl,maxChi2,index,h01,layer)) { |
e4f2f73d | 1111 | if (!t.Update(cl,maxChi2,index,h01)) { |
1112 | // ???? | |
1113 | } | |
1114 | } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07 | |
43bfc8af | 1115 | |
4551ea7c | 1116 | |
bcb6fb78 | 1117 | // if (calibra->GetMITracking()) { |
1118 | // calibra->UpdateHistograms(cl,&t); | |
1119 | // } | |
77566f2a | 1120 | |
e4f2f73d | 1121 | // Reset material budget if 2 consecutive gold |
053767a4 | 1122 | if (layer > 0) { |
1123 | if ((t.GetTracklets(layer).GetN() + t.GetTracklets(layer-1).GetN()) > 20) { | |
e4f2f73d | 1124 | t.SetBudget(2,0.0); |
1125 | } | |
1126 | } | |
1127 | ||
1128 | } | |
4551ea7c | 1129 | |
8979685e | 1130 | } |
4551ea7c | 1131 | |
59393e34 | 1132 | } |
4551ea7c | 1133 | |
1134 | ratio0 = ncl / Float_t(fTimeBinsPerPlane); | |
27eaf44b | 1135 | Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); |
1136 | if ((tracklet.GetChi2() < 18.0) && | |
1137 | (ratio0 > 0.8) && | |
1138 | (ratio1 > 0.6) && | |
1139 | (ratio0+ratio1 > 1.5) && | |
1140 | (t.GetNCross() == 0) && | |
1141 | (TMath::Abs(t.GetSnp()) < 0.85) && | |
1142 | (t.GetNumberOfClusters() > 20)){ | |
7e448bcc | 1143 | //if (ratio0 > 0.8) { |
4551ea7c | 1144 | t.MakeBackupTrack(); // Make backup of the track until is gold |
59393e34 | 1145 | } |
7b580082 | 1146 | |
8979685e | 1147 | } |
5443e65e | 1148 | |
75bd7f81 | 1149 | return expectedNumberOfClusters; |
0c349049 | 1150 | |
75bd7f81 | 1151 | } |
1e9bb598 | 1152 | |
75bd7f81 | 1153 | //_____________________________________________________________________________ |
4551ea7c | 1154 | Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep) |
5443e65e | 1155 | { |
75bd7f81 | 1156 | // |
0c349049 | 1157 | // Starting from current X-position of track <t> this function |
5443e65e | 1158 | // extrapolates the track up to radial position <xToGo>. |
1159 | // Returns 1 if track reaches the plane, and 0 otherwise | |
75bd7f81 | 1160 | // |
1161 | ||
59393e34 | 1162 | const Double_t kEpsilon = 0.00001; |
0c349049 | 1163 | |
1164 | // Current track X-position | |
4551ea7c | 1165 | Double_t xpos = t.GetX(); |
4551ea7c | 1166 | |
0c349049 | 1167 | // Direction: inward or outward |
1168 | Double_t dir = (xpos < xToGo) ? 1.0 : -1.0; | |
4551ea7c | 1169 | |
0c349049 | 1170 | while (((xToGo - xpos) * dir) > kEpsilon) { |
4551ea7c | 1171 | |
1172 | Double_t xyz0[3]; | |
1173 | Double_t xyz1[3]; | |
1174 | Double_t param[7]; | |
1175 | Double_t x; | |
1176 | Double_t y; | |
1177 | Double_t z; | |
0c349049 | 1178 | |
1179 | // The next step size | |
1180 | Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep); | |
1181 | ||
1182 | // Get the global position of the starting point | |
1183 | t.GetXYZ(xyz0); | |
1184 | ||
1185 | // X-position after next step | |
4551ea7c | 1186 | x = xpos + step; |
1187 | ||
0c349049 | 1188 | // Get local Y and Z at the X-position of the next step |
4551ea7c | 1189 | if (!t.GetProlongation(x,y,z)) { |
0c349049 | 1190 | return 0; // No prolongation possible |
4551ea7c | 1191 | } |
1192 | ||
0c349049 | 1193 | // The global position of the end point of this prolongation step |
4551ea7c | 1194 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); |
1195 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
1196 | xyz1[2] = z; | |
1197 | ||
0c349049 | 1198 | // Calculate the mean material budget between start and |
1199 | // end point of this prolongation step | |
1200 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); | |
1201 | ||
1202 | // Propagate the track to the X-position after the next step | |
97ccb02b | 1203 | if (!t.PropagateTo(x,param[1],param[0]*param[4])) { |
4551ea7c | 1204 | return 0; |
1205 | } | |
0c349049 | 1206 | |
1207 | // Rotate the track if necessary | |
59393e34 | 1208 | AdjustSector(&t); |
0c349049 | 1209 | |
1210 | // New track X-position | |
59393e34 | 1211 | xpos = t.GetX(); |
4551ea7c | 1212 | |
5443e65e | 1213 | } |
75bd7f81 | 1214 | |
5443e65e | 1215 | return 1; |
5443e65e | 1216 | |
59393e34 | 1217 | } |
5443e65e | 1218 | |
c630aafd | 1219 | //_____________________________________________________________________________ |
1220 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1221 | { | |
75bd7f81 | 1222 | // |
c630aafd | 1223 | // Fills clusters into TRD tracking_sectors |
1224 | // Note that the numbering scheme for the TRD tracking_sectors | |
1225 | // differs from that of TRD sectors | |
75bd7f81 | 1226 | // |
1227 | ||
e4f2f73d | 1228 | |
1229 | if (ReadClusters(fClusters, cTree)) { | |
0c349049 | 1230 | AliError("Problem with reading the clusters !"); |
1231 | return 1; | |
c630aafd | 1232 | } |
0c349049 | 1233 | Int_t ncl = fClusters->GetEntriesFast(); |
4551ea7c | 1234 | fNclusters = ncl; |
1235 | AliInfo(Form("Sorting %d clusters",ncl)); | |
c630aafd | 1236 | |
1237 | UInt_t index; | |
6c94f330 | 1238 | while (ncl--) { |
33744e5d | 1239 | |
4551ea7c | 1240 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl); |
1241 | Int_t detector = c->GetDetector(); | |
1242 | Int_t localTimeBin = c->GetLocalTimeBin(); | |
1243 | Int_t sector = fGeom->GetSector(detector); | |
053767a4 | 1244 | Int_t layer = fGeom->GetLayer(detector); |
439c63c8 | 1245 | Int_t trackingSector = sector; |
4551ea7c | 1246 | |
0c349049 | 1247 | //if (c->GetQ() > 10) { |
053767a4 | 1248 | // Int_t stack = fGeom->GetStack(detector); |
0c349049 | 1249 | //} |
c630aafd | 1250 | |
053767a4 | 1251 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(layer,localTimeBin); |
4551ea7c | 1252 | if (gtb < 0) { |
1253 | continue; | |
1254 | } | |
053767a4 | 1255 | Int_t trLayer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1256 | |
4551ea7c | 1257 | index = ncl; |
33744e5d | 1258 | |
7e448bcc | 1259 | fHXCl->Fill(c->GetX()); |
33744e5d | 1260 | |
053767a4 | 1261 | fTrSec[trackingSector]->GetLayer(trLayer)->SetX(c->GetX()); |
1262 | fTrSec[trackingSector]->GetLayer(trLayer)->InsertCluster(c,index); | |
af26ce80 | 1263 | |
4551ea7c | 1264 | } |
75bd7f81 | 1265 | |
c630aafd | 1266 | return 0; |
75bd7f81 | 1267 | |
c630aafd | 1268 | } |
1269 | ||
5443e65e | 1270 | //_____________________________________________________________________________ |
b7a0917f | 1271 | void AliTRDtracker::UnloadClusters() |
5443e65e | 1272 | { |
1273 | // | |
1274 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1275 | // | |
1276 | ||
4551ea7c | 1277 | Int_t i; |
1278 | Int_t nentr; | |
5443e65e | 1279 | |
1280 | nentr = fClusters->GetEntriesFast(); | |
4551ea7c | 1281 | for (i = 0; i < nentr; i++) { |
1282 | delete fClusters->RemoveAt(i); | |
1283 | } | |
b7a0917f | 1284 | fNclusters = 0; |
5443e65e | 1285 | |
1286 | nentr = fSeeds->GetEntriesFast(); | |
4551ea7c | 1287 | for (i = 0; i < nentr; i++) { |
1288 | delete fSeeds->RemoveAt(i); | |
1289 | } | |
5443e65e | 1290 | |
1291 | nentr = fTracks->GetEntriesFast(); | |
4551ea7c | 1292 | for (i = 0; i < nentr; i++) { |
1293 | delete fTracks->RemoveAt(i); | |
1294 | } | |
5443e65e | 1295 | |
053767a4 | 1296 | Int_t nsec = AliTRDgeometry::kNsector; |
5443e65e | 1297 | for (i = 0; i < nsec; i++) { |
1298 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1299 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | } | |
1304 | ||
75bd7f81 | 1305 | //_____________________________________________________________________________ |
e4f2f73d | 1306 | Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *esd) |
7ad19338 | 1307 | { |
1308 | // | |
1309 | // Creates seeds using clusters between position inner plane and outer plane | |
1310 | // | |
75bd7f81 | 1311 | |
4551ea7c | 1312 | const Double_t kMaxTheta = 1.0; |
1313 | const Double_t kMaxPhi = 2.0; | |
1314 | ||
1315 | const Double_t kRoad0y = 6.0; // Road for middle cluster | |
1316 | const Double_t kRoad0z = 8.5; // Road for middle cluster | |
1317 | ||
1318 | const Double_t kRoad1y = 2.0; // Road in y for seeded cluster | |
1319 | const Double_t kRoad1z = 20.0; // Road in z for seeded cluster | |
1320 | ||
1321 | const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster | |
1322 | const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster | |
c6f438c0 | 1323 | const Int_t kMaxSeed = 3000; |
7ad19338 | 1324 | |
053767a4 | 1325 | Int_t maxSec = AliTRDgeometry::kNsector; |
4551ea7c | 1326 | |
1327 | // Linear fitters in planes | |
1328 | TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const | |
1329 | TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed | |
69b55c55 | 1330 | fitterTC.StoreData(kTRUE); |
1331 | fitterT2.StoreData(kTRUE); | |
4551ea7c | 1332 | AliRieman rieman(1000); // Rieman fitter |
1333 | AliRieman rieman2(1000); // Rieman fitter | |
1334 | ||
1335 | // Find the maximal and minimal layer for the planes | |
7ad19338 | 1336 | Int_t layers[6][2]; |
4551ea7c | 1337 | AliTRDpropagationLayer *reflayers[6]; |
1338 | for (Int_t i = 0; i < 6; i++) { | |
1339 | layers[i][0] = 10000; | |
1340 | layers[i][1] = 0; | |
1341 | } | |
1342 | for (Int_t ns = 0; ns < maxSec; ns++) { | |
1343 | for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) { | |
053767a4 | 1344 | AliTRDpropagationLayer &propLayer = *(fTrSec[ns]->GetLayer(ilayer)); |
1345 | if (propLayer == 0) { | |
4551ea7c | 1346 | continue; |
1347 | } | |
053767a4 | 1348 | Int_t det = propLayer[0]->GetDetector(); |
1349 | Int_t layer = fGeom->GetLayer(det); | |
1350 | if (ilayer < layers[layer][0]) { | |
1351 | layers[layer][0] = ilayer; | |
4551ea7c | 1352 | } |
053767a4 | 1353 | if (ilayer > layers[layer][1]) { |
1354 | layers[layer][1] = ilayer; | |
4551ea7c | 1355 | } |
7ad19338 | 1356 | } |
1357 | } | |
4551ea7c | 1358 | |
f162af62 | 1359 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); |
6c94f330 | 1360 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
4551ea7c | 1361 | Double_t hL[6]; // Tilting angle |
1362 | Double_t xcl[6]; // X - position of reference cluster | |
1363 | Double_t ycl[6]; // Y - position of reference cluster | |
1364 | Double_t zcl[6]; // Z - position of reference cluster | |
1365 | ||
1366 | AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters | |
1367 | Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length | |
1368 | ||
1369 | Double_t chi2R = 0.0; | |
1370 | Double_t chi2Z = 0.0; | |
1371 | Double_t chi2RF = 0.0; | |
1372 | Double_t chi2ZF = 0.0; | |
1373 | ||
1374 | Int_t nclusters; // Total number of clusters | |
1375 | for (Int_t i = 0; i < 6; i++) { | |
1376 | hL[i] = h01; | |
1377 | if (i%2==1) { | |
1378 | hL[i]*=-1.0; | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | // Registered seed | |
c6f438c0 | 1383 | AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6]; |
1384 | AliTRDseed *seed[kMaxSeed]; | |
4551ea7c | 1385 | for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) { |
1386 | seed[iseed]= &pseed[iseed*6]; | |
1387 | } | |
69b55c55 | 1388 | AliTRDseed *cseed = seed[0]; |
4551ea7c | 1389 | |
1390 | Double_t seedquality[kMaxSeed]; | |
1391 | Double_t seedquality2[kMaxSeed]; | |
1392 | Double_t seedparams[kMaxSeed][7]; | |
1393 | Int_t seedlayer[kMaxSeed]; | |
1394 | Int_t registered = 0; | |
1395 | Int_t sort[kMaxSeed]; | |
1396 | ||
1397 | // | |
1398 | // Seeding part | |
1399 | // | |
1400 | for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors | |
1401 | //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors | |
1402 | ||
1403 | registered = 0; // Reset registerd seed counter | |
1404 | cseed = seed[registered]; | |
1405 | Float_t iter = 0.0; | |
1406 | ||
1407 | for (Int_t sLayer = 2; sLayer >= 0; sLayer--) { | |
1408 | //for (Int_t dseed = 5; dseed < 15; dseed += 3) { | |
1409 | ||
1410 | iter += 1.0; | |
1411 | Int_t dseed = 5 + Int_t(iter) * 3; | |
1412 | ||
69b55c55 | 1413 | // Initialize seeding layers |
4551ea7c | 1414 | for (Int_t ilayer = 0; ilayer < 6; ilayer++) { |
69b55c55 | 1415 | reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed); |
1416 | xcl[ilayer] = reflayers[ilayer]->GetX(); | |
4551ea7c | 1417 | } |
1418 | ||
1419 | Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5; | |
1420 | AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0]; | |
1421 | AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1]; | |
1422 | AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2]; | |
1423 | AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3]; | |
1424 | ||
1425 | Int_t maxn3 = layer3; | |
1426 | for (Int_t icl3 = 0; icl3 < maxn3; icl3++) { | |
33744e5d | 1427 | |
69b55c55 | 1428 | AliTRDcluster *cl3 = layer3[icl3]; |
4551ea7c | 1429 | if (!cl3) { |
1430 | continue; | |
1431 | } | |
1432 | padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0); | |
69b55c55 | 1433 | ycl[sLayer+3] = cl3->GetY(); |
1434 | zcl[sLayer+3] = cl3->GetZ(); | |
4551ea7c | 1435 | Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); |
1436 | Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); | |
1437 | Int_t maxn0 = layer0; | |
1438 | ||
1439 | for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) { | |
1440 | ||
69b55c55 | 1441 | AliTRDcluster *cl0 = layer0[icl0]; |
4551ea7c | 1442 | if (!cl0) { |
1443 | continue; | |
1444 | } | |
1445 | if (cl3->IsUsed() && cl0->IsUsed()) { | |
1446 | continue; | |
1447 | } | |
69b55c55 | 1448 | ycl[sLayer+0] = cl0->GetY(); |
1449 | zcl[sLayer+0] = cl0->GetZ(); | |
4551ea7c | 1450 | if (ycl[sLayer+0] > yymax0) { |
1451 | break; | |
1452 | } | |
1453 | Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); | |
1454 | if (TMath::Abs(tanphi) > kMaxPhi) { | |
1455 | continue; | |
1456 | } | |
1457 | Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); | |
1458 | if (TMath::Abs(tantheta) > kMaxTheta) { | |
1459 | continue; | |
1460 | } | |
1461 | padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0); | |
1462 | ||
1463 | // Expected position in 1 layer | |
1464 | Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]); | |
1465 | Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]); | |
1466 | Float_t yymin1 = y1exp - kRoad0y - tanphi; | |
1467 | Float_t yymax1 = y1exp + kRoad0y + tanphi; | |
1468 | Int_t maxn1 = layer1; | |
1469 | ||
1470 | for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) { | |
1471 | ||
69b55c55 | 1472 | AliTRDcluster *cl1 = layer1[icl1]; |
4551ea7c | 1473 | if (!cl1) { |
1474 | continue; | |
1475 | } | |
69b55c55 | 1476 | Int_t nusedCl = 0; |
1477 | if (cl3->IsUsed()) nusedCl++; | |
1478 | if (cl0->IsUsed()) nusedCl++; | |
1479 | if (cl1->IsUsed()) nusedCl++; | |
4551ea7c | 1480 | if (nusedCl > 1) { |
1481 | continue; | |
1482 | } | |
69b55c55 | 1483 | ycl[sLayer+1] = cl1->GetY(); |
1484 | zcl[sLayer+1] = cl1->GetZ(); | |
4551ea7c | 1485 | if (ycl[sLayer+1] > yymax1) { |
1486 | break; | |
1487 | } | |
1488 | if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) { | |
1489 | continue; | |
1490 | } | |
1491 | if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) { | |
1492 | continue; | |
1493 | } | |
1494 | padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0); | |
1495 | ||
1496 | Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp); | |
1497 | Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]); | |
1498 | Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z); | |
1499 | if (index2 <= 0) { | |
1500 | continue; | |
1501 | } | |
1502 | AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2); | |
1503 | padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0); | |
1504 | ycl[sLayer+2] = cl2->GetY(); | |
1505 | zcl[sLayer+2] = cl2->GetZ(); | |
1506 | if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) { | |
1507 | continue; | |
1508 | } | |
1509 | ||
69b55c55 | 1510 | rieman.Reset(); |
1511 | rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10); | |
1512 | rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10); | |
1513 | rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10); | |
1514 | rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10); | |
1515 | rieman.Update(); | |
4551ea7c | 1516 | |
1517 | // Reset fitter | |
1518 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
69b55c55 | 1519 | cseed[iLayer].Reset(); |
1520 | } | |
4551ea7c | 1521 | chi2Z = 0.0; |
1522 | chi2R = 0.0; | |
1523 | ||
1524 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
ca1e1e5b | 1525 | cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); |
1526 | chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]) | |
1527 | * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]); | |
1528 | cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); | |
1529 | cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); | |
1530 | chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]) | |
1531 | * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]); | |
1532 | cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); | |
69b55c55 | 1533 | } |
4551ea7c | 1534 | if (TMath::Sqrt(chi2R) > 1.0/iter) { |
1535 | continue; | |
1536 | } | |
1537 | if (TMath::Sqrt(chi2Z) > 7.0/iter) { | |
1538 | continue; | |
69b55c55 | 1539 | } |
4551ea7c | 1540 | |
1541 | Float_t minmax[2] = { -100.0, 100.0 }; | |
1542 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
1543 | Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5 | |
ca1e1e5b | 1544 | + 1.0 - cseed[sLayer+iLayer].GetZref(0); |
4551ea7c | 1545 | if (max < minmax[1]) { |
1546 | minmax[1] = max; | |
1547 | } | |
1548 | Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5 | |
ca1e1e5b | 1549 | - 1.0 - cseed[sLayer+iLayer].GetZref(0); |
4551ea7c | 1550 | if (min > minmax[0]) { |
1551 | minmax[0] = min; | |
1552 | } | |
1553 | } | |
1554 | ||
69b55c55 | 1555 | Bool_t isFake = kFALSE; |
4551ea7c | 1556 | if (cl0->GetLabel(0) != cl3->GetLabel(0)) { |
1557 | isFake = kTRUE; | |
1558 | } | |
1559 | if (cl1->GetLabel(0) != cl3->GetLabel(0)) { | |
1560 | isFake = kTRUE; | |
1561 | } | |
1562 | if (cl2->GetLabel(0) != cl3->GetLabel(0)) { | |
1563 | isFake = kTRUE; | |
1564 | } | |
1565 | ||
3a039a31 | 1566 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
4551ea7c | 1567 | if ((!isFake) || ((icl3%10) == 0)) { // Debugging print |
1568 | TTreeSRedirector &cstream = *fDebugStreamer; | |
1569 | cstream << "Seeds0" | |
1570 | << "isFake=" << isFake | |
1571 | << "Cl0.=" << cl0 | |
1572 | << "Cl1.=" << cl1 | |
1573 | << "Cl2.=" << cl2 | |
1574 | << "Cl3.=" << cl3 | |
1575 | << "Xref=" << xref | |
1576 | << "X0=" << xcl[sLayer+0] | |
1577 | << "X1=" << xcl[sLayer+1] | |
1578 | << "X2=" << xcl[sLayer+2] | |
1579 | << "X3=" << xcl[sLayer+3] | |
1580 | << "Y2exp=" << y2exp | |
1581 | << "Z2exp=" << z2exp | |
1582 | << "Chi2R=" << chi2R | |
1583 | << "Chi2Z=" << chi2Z | |
1584 | << "Seed0.=" << &cseed[sLayer+0] | |
1585 | << "Seed1.=" << &cseed[sLayer+1] | |
1586 | << "Seed2.=" << &cseed[sLayer+2] | |
1587 | << "Seed3.=" << &cseed[sLayer+3] | |
1588 | << "Zmin=" << minmax[0] | |
1589 | << "Zmax=" << minmax[1] | |
1590 | << "\n"; | |
d337ef8d | 1591 | } |
69b55c55 | 1592 | } |
33744e5d | 1593 | |
4551ea7c | 1594 | //////////////////////////////////////////////////////////////////////////////////// |
33744e5d | 1595 | // |
4551ea7c | 1596 | // Fit seeding part |
33744e5d | 1597 | // |
4551ea7c | 1598 | //////////////////////////////////////////////////////////////////////////////////// |
33744e5d | 1599 | |
69b55c55 | 1600 | cl[sLayer+0] = cl0; |
1601 | cl[sLayer+1] = cl1; | |
1602 | cl[sLayer+2] = cl2; | |
1603 | cl[sLayer+3] = cl3; | |
4551ea7c | 1604 | Bool_t isOK = kTRUE; |
1605 | ||
1606 | for (Int_t jLayer = 0; jLayer < 4; jLayer++) { | |
1607 | ||
ca1e1e5b | 1608 | cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]); |
1609 | cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]); | |
1610 | cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]); | |
4551ea7c | 1611 | |
7bce990c | 1612 | for (Int_t jter = 0; jter < 2; jter++) { |
4551ea7c | 1613 | |
69b55c55 | 1614 | // |
4551ea7c | 1615 | // In iteration 0 we try only one pad-row |
1616 | // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows | |
69b55c55 | 1617 | // |
1618 | AliTRDseed tseed = cseed[sLayer+jLayer]; | |
4551ea7c | 1619 | Float_t roadz = padlength[sLayer+jLayer] * 0.5; |
7bce990c | 1620 | if (jter > 0) { |
4551ea7c | 1621 | roadz = padlength[sLayer+jLayer]; |
1622 | } | |
1623 | ||
1624 | Float_t quality = 10000.0; | |
1625 | ||
1626 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1627 | ||
1628 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime)); | |
1629 | Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer]; | |
1630 | Double_t zexp = cl[sLayer+jLayer]->GetZ(); | |
1631 | ||
7bce990c | 1632 | if (jter > 0) { |
4551ea7c | 1633 | // Try 2 pad-rows in second iteration |
ca1e1e5b | 1634 | zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer; |
4551ea7c | 1635 | if (zexp > cl[sLayer+jLayer]->GetZ()) { |
1636 | zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5; | |
1637 | } | |
1638 | if (zexp < cl[sLayer+jLayer]->GetZ()) { | |
1639 | zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5; | |
1640 | } | |
69b55c55 | 1641 | } |
4551ea7c | 1642 | |
ca1e1e5b | 1643 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; |
4551ea7c | 1644 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); |
1645 | if (index <= 0) { | |
1646 | continue; | |
1647 | } | |
7bce990c | 1648 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
4551ea7c | 1649 | |
ca1e1e5b | 1650 | tseed.SetIndexes(iTime,index); |
7bce990c | 1651 | tseed.SetClusters(iTime,clu); // Register cluster |
1652 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1653 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1654 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1655 | |
1656 | } | |
1657 | ||
69b55c55 | 1658 | tseed.Update(); |
4551ea7c | 1659 | |
1660 | // Count the number of clusters and distortions into quality | |
ca1e1e5b | 1661 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1662 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 | |
1663 | + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 | |
1664 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
7bce990c | 1665 | if ((jter == 0) && tseed.IsOK()) { |
4551ea7c | 1666 | cseed[sLayer+jLayer] = tseed; |
1667 | quality = tquality; | |
1668 | if (tquality < 5) { | |
1669 | break; | |
1670 | } | |
1671 | } | |
1672 | if (tseed.IsOK() && (tquality < quality)) { | |
69b55c55 | 1673 | cseed[sLayer+jLayer] = tseed; |
69b55c55 | 1674 | } |
4551ea7c | 1675 | |
7bce990c | 1676 | } // Loop: jter |
4551ea7c | 1677 | |
1678 | if (!cseed[sLayer+jLayer].IsOK()) { | |
69b55c55 | 1679 | isOK = kFALSE; |
1680 | break; | |
4551ea7c | 1681 | } |
1682 | ||
69b55c55 | 1683 | cseed[sLayer+jLayer].CookLabels(); |
1684 | cseed[sLayer+jLayer].UpdateUsed(); | |
ca1e1e5b | 1685 | nusedCl += cseed[sLayer+jLayer].GetNUsed(); |
4551ea7c | 1686 | if (nusedCl > 25) { |
69b55c55 | 1687 | isOK = kFALSE; |
1688 | break; | |
4551ea7c | 1689 | } |
1690 | ||
1691 | } // Loop: jLayer | |
1692 | ||
1693 | if (!isOK) { | |
1694 | continue; | |
69b55c55 | 1695 | } |
4551ea7c | 1696 | nclusters = 0; |
1697 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
1698 | if (cseed[sLayer+iLayer].IsOK()) { | |
ca1e1e5b | 1699 | nclusters += cseed[sLayer+iLayer].GetN2(); |
69b55c55 | 1700 | } |
1701 | } | |
4551ea7c | 1702 | |
1703 | // Iteration 0 | |
69b55c55 | 1704 | rieman.Reset(); |
4551ea7c | 1705 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { |
1706 | rieman.AddPoint(xcl[sLayer+iLayer] | |
ca1e1e5b | 1707 | ,cseed[sLayer+iLayer].GetYfitR(0) |
1708 | ,cseed[sLayer+iLayer].GetZProb() | |
4551ea7c | 1709 | ,1 |
1710 | ,10); | |
69b55c55 | 1711 | } |
1712 | rieman.Update(); | |
4551ea7c | 1713 | |
1714 | chi2R = 0.0; | |
1715 | chi2Z = 0.0; | |
1716 | ||
1717 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
ca1e1e5b | 1718 | cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); |
1719 | chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)) | |
1720 | * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)); | |
1721 | cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); | |
1722 | cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); | |
1723 | chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()) | |
1724 | * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()); | |
1725 | cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); | |
69b55c55 | 1726 | } |
1727 | Double_t curv = rieman.GetC(); | |
4551ea7c | 1728 | |
69b55c55 | 1729 | // |
4551ea7c | 1730 | // Likelihoods |
6c94f330 | 1731 | // |
ca1e1e5b | 1732 | Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1)) |
1733 | + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1)) | |
1734 | + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1)) | |
1735 | + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1)); | |
4551ea7c | 1736 | Double_t likea = TMath::Exp(-sumda*10.6); |
1737 | Double_t likechi2 = 0.0000000001; | |
1738 | if (chi2R < 0.5) { | |
1739 | likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73); | |
1740 | } | |
1741 | Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019); | |
1742 | Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19); | |
1743 | Double_t like = likea * likechi2 * likechi2z * likeN; | |
ca1e1e5b | 1744 | Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9); |
1745 | Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1) | |
1746 | - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9); | |
6c94f330 | 1747 | Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005); |
69b55c55 | 1748 | |
4551ea7c | 1749 | seedquality[registered] = like; |
1750 | seedlayer[registered] = sLayer; | |
1751 | if (TMath::Log(0.000000000000001 + like) < -15) { | |
1752 | continue; | |
1753 | } | |
69b55c55 | 1754 | AliTRDseed seedb[6]; |
4551ea7c | 1755 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
69b55c55 | 1756 | seedb[iLayer] = cseed[iLayer]; |
1757 | } | |
4551ea7c | 1758 | |
1759 | //////////////////////////////////////////////////////////////////////////////////// | |
ad670fba | 1760 | // |
4551ea7c | 1761 | // Full track fit part |
33744e5d | 1762 | // |
4551ea7c | 1763 | //////////////////////////////////////////////////////////////////////////////////// |
1764 | ||
1765 | Int_t nlayers = 0; | |
1766 | Int_t nusedf = 0; | |
1767 | Int_t findable = 0; | |
1768 | ||
69b55c55 | 1769 | // |
4551ea7c | 1770 | // Add new layers - avoid long extrapolation |
69b55c55 | 1771 | // |
4551ea7c | 1772 | Int_t tLayer[2] = { 0, 0 }; |
1773 | if (sLayer == 2) { | |
1774 | tLayer[0] = 1; | |
1775 | tLayer[1] = 0; | |
1776 | } | |
1777 | if (sLayer == 1) { | |
1778 | tLayer[0] = 5; | |
1779 | tLayer[1] = 0; | |
1780 | } | |
1781 | if (sLayer == 0) { | |
1782 | tLayer[0] = 4; | |
1783 | tLayer[1] = 5; | |
1784 | } | |
1785 | ||
1786 | for (Int_t iLayer = 0; iLayer < 2; iLayer++) { | |
1787 | Int_t jLayer = tLayer[iLayer]; // Set tracking layer | |
69b55c55 | 1788 | cseed[jLayer].Reset(); |
ca1e1e5b | 1789 | cseed[jLayer].SetTilt(hL[jLayer]); |
1790 | cseed[jLayer].SetPadLength(padlength[jLayer]); | |
1791 | cseed[jLayer].SetX0(xcl[jLayer]); | |
4551ea7c | 1792 | // Get pad length and rough cluster |
ca1e1e5b | 1793 | Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0) |
1794 | ,cseed[jLayer].GetZref(0) | |
4551ea7c | 1795 | ,kRoad2y |
1796 | ,kRoad2z); | |
1797 | if (indexdummy <= 0) { | |
1798 | continue; | |
1799 | } | |
1800 | AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy); | |
1801 | padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0); | |
69b55c55 | 1802 | } |
4551ea7c | 1803 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); |
1804 | ||
1805 | for (Int_t iLayer = 0; iLayer < 2; iLayer++) { | |
1806 | ||
1807 | Int_t jLayer = tLayer[iLayer]; // set tracking layer | |
1808 | if ((jLayer == 0) && !(cseed[1].IsOK())) { | |
1809 | continue; // break not allowed | |
1810 | } | |
1811 | if ((jLayer == 5) && !(cseed[4].IsOK())) { | |
1812 | continue; // break not allowed | |
1813 | } | |
ca1e1e5b | 1814 | Float_t zexp = cseed[jLayer].GetZref(0); |
4551ea7c | 1815 | Double_t zroad = padlength[jLayer] * 0.5 + 1.0; |
1816 | ||
7bce990c | 1817 | for (Int_t jter = 0; jter < 2; jter++) { |
4551ea7c | 1818 | |
69b55c55 | 1819 | AliTRDseed tseed = cseed[jLayer]; |
4551ea7c | 1820 | Float_t quality = 10000.0; |
1821 | ||
1822 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1823 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime)); | |
1824 | Double_t dxlayer = layer.GetX()-xcl[jLayer]; | |
ca1e1e5b | 1825 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; |
4551ea7c | 1826 | Float_t yroad = kRoad1y; |
1827 | Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad); | |
1828 | if (index <= 0) { | |
1829 | continue; | |
1830 | } | |
7bce990c | 1831 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
ca1e1e5b | 1832 | tseed.SetIndexes(iTime,index); |
7bce990c | 1833 | tseed.SetClusters(iTime,clu); // Register cluster |
1834 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1835 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1836 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1837 | } |
1838 | ||
69b55c55 | 1839 | tseed.Update(); |
4551ea7c | 1840 | if (tseed.IsOK()) { |
ca1e1e5b | 1841 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1842 | Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1 | |
1843 | + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 | |
1844 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1845 | if (tquality < quality) { |
1846 | cseed[jLayer] = tseed; | |
1847 | quality = tquality; | |
69b55c55 | 1848 | } |
1849 | } | |
4551ea7c | 1850 | |
1851 | zroad *= 2.0; | |
1852 | ||
7bce990c | 1853 | } // Loop: jter |
4551ea7c | 1854 | |
1855 | if ( cseed[jLayer].IsOK()) { | |
69b55c55 | 1856 | cseed[jLayer].CookLabels(); |
1857 | cseed[jLayer].UpdateUsed(); | |
ca1e1e5b | 1858 | nusedf += cseed[jLayer].GetNUsed(); |
4551ea7c | 1859 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); |
69b55c55 | 1860 | } |
4551ea7c | 1861 | |
1862 | } // Loop: iLayer | |
1863 | ||
1864 | // Make copy | |
69b55c55 | 1865 | AliTRDseed bseed[6]; |
4551ea7c | 1866 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { |
69b55c55 | 1867 | bseed[jLayer] = cseed[jLayer]; |
4551ea7c | 1868 | } |
1869 | Float_t lastquality = 10000.0; | |
1870 | Float_t lastchi2 = 10000.0; | |
1871 | Float_t chi2 = 1000.0; | |
1872 | ||
7bce990c | 1873 | for (Int_t jter = 0; jter < 4; jter++) { |
4551ea7c | 1874 | |
1875 | // Sort tracklets according "quality", try to "improve" 4 worst | |
1876 | Float_t sumquality = 0.0; | |
69b55c55 | 1877 | Float_t squality[6]; |
1878 | Int_t sortindexes[6]; | |
4551ea7c | 1879 | |
1880 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
1881 | if (bseed[jLayer].IsOK()) { | |
69b55c55 | 1882 | AliTRDseed &tseed = bseed[jLayer]; |
ca1e1e5b | 1883 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); |
1884 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); | |
1885 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 | |
1886 | + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 | |
1887 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1888 | squality[jLayer] = tquality; |
1889 | } | |
1890 | else { | |
1891 | squality[jLayer] = -1.0; | |
ad670fba | 1892 | } |
6c94f330 | 1893 | sumquality +=squality[jLayer]; |
69b55c55 | 1894 | } |
1895 | ||
4551ea7c | 1896 | if ((sumquality >= lastquality) || |
1897 | (chi2 > lastchi2)) { | |
1898 | break; | |
1899 | } | |
69b55c55 | 1900 | lastquality = sumquality; |
1901 | lastchi2 = chi2; | |
7bce990c | 1902 | if (jter > 0) { |
4551ea7c | 1903 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { |
69b55c55 | 1904 | cseed[jLayer] = bseed[jLayer]; |
1905 | } | |
1906 | } | |
1907 | TMath::Sort(6,squality,sortindexes,kFALSE); | |
4551ea7c | 1908 | |
1909 | for (Int_t jLayer = 5; jLayer > 1; jLayer--) { | |
1910 | ||
6c94f330 | 1911 | Int_t bLayer = sortindexes[jLayer]; |
1912 | AliTRDseed tseed = bseed[bLayer]; | |
4551ea7c | 1913 | |
1914 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1915 | ||
1916 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime)); | |
1917 | Double_t dxlayer = layer.GetX() - xcl[bLayer]; | |
ca1e1e5b | 1918 | Double_t zexp = tseed.GetZref(0); |
1919 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); | |
4551ea7c | 1920 | Float_t roadz = padlength[bLayer] + 1; |
ca1e1e5b | 1921 | if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) { |
4551ea7c | 1922 | roadz = padlength[bLayer] * 0.5; |
1923 | } | |
ca1e1e5b | 1924 | if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) { |
4551ea7c | 1925 | roadz = padlength[bLayer] * 0.5; |
1926 | } | |
ca1e1e5b | 1927 | if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) { |
1928 | zexp = tseed.GetZProb(); | |
4551ea7c | 1929 | roadz = padlength[bLayer] * 0.5; |
1930 | } | |
1931 | ||
ca1e1e5b | 1932 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor; |
4551ea7c | 1933 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); |
1934 | if (index <= 0) { | |
1935 | continue; | |
69b55c55 | 1936 | } |
7bce990c | 1937 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
4551ea7c | 1938 | |
ca1e1e5b | 1939 | tseed.SetIndexes(iTime,index); |
7bce990c | 1940 | tseed.SetClusters(iTime,clu); // Register cluster |
1941 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1942 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1943 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1944 | |
1945 | } | |
1946 | ||
69b55c55 | 1947 | tseed.Update(); |
c6f438c0 | 1948 | if (tseed.IsOK()) { |
ca1e1e5b | 1949 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1950 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); | |
1951 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 | |
1952 | + TMath::Abs(dangle) / 0.1 | |
1953 | + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 | |
1954 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1955 | if (tquality<squality[bLayer]) { |
69b55c55 | 1956 | bseed[bLayer] = tseed; |
4551ea7c | 1957 | } |
69b55c55 | 1958 | } |
4551ea7c | 1959 | |
1960 | } // Loop: jLayer | |
1961 | ||
1962 | chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE); | |
1963 | ||
7bce990c | 1964 | } // Loop: jter |
4551ea7c | 1965 | |
1966 | nclusters = 0; | |
1967 | nlayers = 0; | |
1968 | findable = 0; | |
1969 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
ca1e1e5b | 1970 | if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) { |
69b55c55 | 1971 | findable++; |
4551ea7c | 1972 | } |
1973 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 1974 | nclusters += cseed[iLayer].GetN2(); |
69b55c55 | 1975 | nlayers++; |
1976 | } | |
1977 | } | |
4551ea7c | 1978 | if (nlayers < 3) { |
1979 | continue; | |
1980 | } | |
69b55c55 | 1981 | rieman.Reset(); |
4551ea7c | 1982 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
1983 | if (cseed[iLayer].IsOK()) { | |
1984 | rieman.AddPoint(xcl[iLayer] | |
ca1e1e5b | 1985 | ,cseed[iLayer].GetYfitR(0) |
1986 | ,cseed[iLayer].GetZProb() | |
4551ea7c | 1987 | ,1 |
1988 | ,10); | |
1989 | } | |
69b55c55 | 1990 | } |
1991 | rieman.Update(); | |
4551ea7c | 1992 | |
1993 | chi2RF = 0.0; | |
1994 | chi2ZF = 0.0; | |
1995 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
1996 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 1997 | cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer])); |
1998 | chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0)) | |
1999 | * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0)); | |
2000 | cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer])); | |
2001 | cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer])); | |
2002 | chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz()) | |
2003 | * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz()); | |
2004 | cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer])); | |
69b55c55 | 2005 | } |
2006 | } | |
4551ea7c | 2007 | chi2RF /= TMath::Max((nlayers - 3.0),1.0); |
2008 | chi2ZF /= TMath::Max((nlayers - 3.0),1.0); | |
2009 | curv = rieman.GetC(); | |
2010 | ||
2011 | Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber | |
2012 | Double_t dzmf = rieman.GetDZat(xref2); | |
2013 | Double_t zmf = rieman.GetZat(xref2); | |
69b55c55 | 2014 | |
69b55c55 | 2015 | // |
4551ea7c | 2016 | // Fit hyperplane |
69b55c55 | 2017 | // |
4551ea7c | 2018 | Int_t npointsT = 0; |
69b55c55 | 2019 | fitterTC.ClearPoints(); |
2020 | fitterT2.ClearPoints(); | |
2021 | rieman2.Reset(); | |
4551ea7c | 2022 | |
2023 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2024 | ||
2025 | if (!cseed[iLayer].IsOK()) { | |
2026 | continue; | |
2027 | } | |
2028 | ||
2029 | for (Int_t itime = 0; itime < 25; itime++) { | |
2030 | ||
ca1e1e5b | 2031 | if (!cseed[iLayer].IsUsable(itime)) { |
4551ea7c | 2032 | continue; |
2033 | } | |
2034 | // X relative to the middle chamber | |
ca1e1e5b | 2035 | Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2; |
2036 | Double_t y = cseed[iLayer].GetY(itime); | |
2037 | Double_t z = cseed[iLayer].GetZ(itime); | |
69b55c55 | 2038 | // ExB correction to the correction |
4551ea7c | 2039 | // Tilted rieman |
69b55c55 | 2040 | Double_t uvt[6]; |
4551ea7c | 2041 | // Global x |
ca1e1e5b | 2042 | Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0(); |
4551ea7c | 2043 | Double_t t = 1.0 / (x2*x2 + y*y); |
2044 | uvt[1] = t; // t | |
2045 | uvt[0] = 2.0 * x2 * uvt[1]; // u | |
2046 | uvt[2] = 2.0 * hL[iLayer] * uvt[1]; | |
2047 | uvt[3] = 2.0 * hL[iLayer] * x * uvt[1]; | |
2048 | uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1]; | |
2049 | Double_t error = 2.0 * 0.2 * uvt[1]; | |
69b55c55 | 2050 | fitterT2.AddPoint(uvt,uvt[4],error); |
4551ea7c | 2051 | |
69b55c55 | 2052 | // |
4551ea7c | 2053 | // Constrained rieman |
69b55c55 | 2054 | // |
ca1e1e5b | 2055 | z = cseed[iLayer].GetZ(itime); |
4551ea7c | 2056 | uvt[0] = 2.0 * x2 * t; // u |
2057 | uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1]; | |
2058 | uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t; | |
69b55c55 | 2059 | fitterTC.AddPoint(uvt,uvt[2],error); |
69b55c55 | 2060 | rieman2.AddPoint(x2,y,z,1,10); |
2061 | npointsT++; | |
4551ea7c | 2062 | |
69b55c55 | 2063 | } |
4551ea7c | 2064 | |
2065 | } // Loop: iLayer | |
2066 | ||
69b55c55 | 2067 | rieman2.Update(); |
2068 | fitterTC.Eval(); | |
2069 | fitterT2.Eval(); | |
2070 | Double_t rpolz0 = fitterT2.GetParameter(3); | |
2071 | Double_t rpolz1 = fitterT2.GetParameter(4); | |
4551ea7c | 2072 | |
69b55c55 | 2073 | // |
4551ea7c | 2074 | // Linear fitter - not possible to make boundaries |
2075 | // Do not accept non possible z and dzdx combinations | |
69b55c55 | 2076 | // |
4551ea7c | 2077 | Bool_t acceptablez = kTRUE; |
2078 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2079 | if (cseed[iLayer].IsOK()) { | |
2080 | Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2); | |
ca1e1e5b | 2081 | if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) { |
69b55c55 | 2082 | acceptablez = kFALSE; |
4551ea7c | 2083 | } |
69b55c55 | 2084 | } |
2085 | } | |
4551ea7c | 2086 | if (!acceptablez) { |
69b55c55 | 2087 | fitterT2.FixParameter(3,zmf); |
2088 | fitterT2.FixParameter(4,dzmf); | |
2089 | fitterT2.Eval(); | |
2090 | fitterT2.ReleaseParameter(3); | |
2091 | fitterT2.ReleaseParameter(4); | |
2092 | rpolz0 = fitterT2.GetParameter(3); | |
2093 | rpolz1 = fitterT2.GetParameter(4); | |
2094 | } | |
4551ea7c | 2095 | |
2096 | Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT); | |
2097 | Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT); | |
69b55c55 | 2098 | Double_t polz1c = fitterTC.GetParameter(2); |
4551ea7c | 2099 | Double_t polz0c = polz1c * xref2; |
6c94f330 | 2100 | Double_t aC = fitterTC.GetParameter(0); |
2101 | Double_t bC = fitterTC.GetParameter(1); | |
4551ea7c | 2102 | Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature |
6c94f330 | 2103 | Double_t aR = fitterT2.GetParameter(0); |
2104 | Double_t bR = fitterT2.GetParameter(1); | |
2105 | Double_t dR = fitterT2.GetParameter(2); | |
4551ea7c | 2106 | Double_t cR = 1.0 + bR*bR - dR*aR; |
2107 | Double_t dca = 0.0; | |
2108 | if (cR > 0.0) { | |
2109 | dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR)); | |
2110 | cR = aR / TMath::Sqrt(cR); | |
69b55c55 | 2111 | } |
4551ea7c | 2112 | |
2113 | Double_t chi2ZT2 = 0.0; | |
2114 | Double_t chi2ZTC = 0.0; | |
2115 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2116 | if (cseed[iLayer].IsOK()) { | |
2117 | Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2); | |
2118 | Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2); | |
ca1e1e5b | 2119 | chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2); |
2120 | chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC); | |
69b55c55 | 2121 | } |
2122 | } | |
4551ea7c | 2123 | chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0); |
2124 | chi2ZTC /= TMath::Max((nlayers - 3.0),1.0); | |
2125 | ||
2126 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); | |
2127 | Float_t sumdaf = 0.0; | |
2128 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2129 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 2130 | sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1)) |
2131 | / cseed[iLayer].GetSigmaY2()); | |
4551ea7c | 2132 | } |
2133 | } | |
2134 | sumdaf /= Float_t (nlayers - 2.0); | |
2135 | ||
69b55c55 | 2136 | // |
4551ea7c | 2137 | // Likelihoods for full track |
69b55c55 | 2138 | // |
4551ea7c | 2139 | Double_t likezf = TMath::Exp(-chi2ZF * 0.14); |
2140 | Double_t likechi2C = TMath::Exp(-chi2TC * 0.677); | |
2141 | Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78); | |
2142 | Double_t likeaf = TMath::Exp(-sumdaf * 3.23); | |
2143 | seedquality2[registered] = likezf * likechi2TR * likeaf; | |
33744e5d | 2144 | |
4551ea7c | 2145 | // Still needed ???? |
69b55c55 | 2146 | // Bool_t isGold = kFALSE; |
2147 | // | |
6c94f330 | 2148 | // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold |
2149 | // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold | |
69b55c55 | 2150 | // if (isGold &&nusedf<10){ |
2151 | // for (Int_t jLayer=0;jLayer<6;jLayer++){ | |
6c94f330 | 2152 | // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1) |
69b55c55 | 2153 | // seed[index][jLayer].UseClusters(); //sign gold |
2154 | // } | |
2155 | // } | |
4551ea7c | 2156 | |
2157 | Int_t index0 = 0; | |
2158 | if (!cseed[0].IsOK()) { | |
69b55c55 | 2159 | index0 = 1; |
4551ea7c | 2160 | if (!cseed[1].IsOK()) { |
2161 | index0 = 2; | |
2162 | } | |
69b55c55 | 2163 | } |
ca1e1e5b | 2164 | seedparams[registered][0] = cseed[index0].GetX0(); |
2165 | seedparams[registered][1] = cseed[index0].GetYref(0); | |
2166 | seedparams[registered][2] = cseed[index0].GetZref(0); | |
c6f438c0 | 2167 | seedparams[registered][5] = cR; |
ca1e1e5b | 2168 | seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1))); |
2169 | seedparams[registered][4] = cseed[index0].GetZref(1) | |
2170 | / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1)); | |
69b55c55 | 2171 | seedparams[registered][6] = ns; |
4551ea7c | 2172 | |
2173 | Int_t labels[12]; | |
2174 | Int_t outlab[24]; | |
2175 | Int_t nlab = 0; | |
2176 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2177 | if (!cseed[iLayer].IsOK()) { | |
2178 | continue; | |
2179 | } | |
ca1e1e5b | 2180 | if (cseed[iLayer].GetLabels(0) >= 0) { |
2181 | labels[nlab] = cseed[iLayer].GetLabels(0); | |
69b55c55 | 2182 | nlab++; |
2183 | } | |
ca1e1e5b | 2184 | if (cseed[iLayer].GetLabels(1) >= 0) { |
2185 | labels[nlab] = cseed[iLayer].GetLabels(1); | |
69b55c55 | 2186 | nlab++; |
4551ea7c | 2187 | } |
69b55c55 | 2188 | } |
2189 | Freq(nlab,labels,outlab,kFALSE); | |
4551ea7c | 2190 | Int_t label = outlab[0]; |
2191 | Int_t frequency = outlab[1]; | |
2192 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
ca1e1e5b | 2193 | cseed[iLayer].SetFreq(frequency); |
2194 | cseed[iLayer].SetC(cR); | |
2195 | cseed[iLayer].SetCC(cC); | |
2196 | cseed[iLayer].SetChi2(chi2TR); | |
2197 | cseed[iLayer].SetChi2Z(chi2ZF); | |
69b55c55 | 2198 | } |
33744e5d | 2199 | |
2200 | // Debugging print | |
4551ea7c | 2201 | if (1 || (!isFake)) { |
69b55c55 | 2202 | Float_t zvertex = GetZ(); |
4551ea7c | 2203 | TTreeSRedirector &cstream = *fDebugStreamer; |
3a039a31 | 2204 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
4551ea7c | 2205 | cstream << "Seeds1" |
2206 | << "isFake=" << isFake | |
2207 | << "Vertex=" << zvertex | |
2208 | << "Rieman2.=" << &rieman2 | |
2209 | << "Rieman.=" << &rieman | |
2210 | << "Xref=" << xref | |
2211 | << "X0=" << xcl[0] | |
2212 | << "X1=" << xcl[1] | |
2213 | << "X2=" << xcl[2] | |
2214 | << "X3=" << xcl[3] | |
2215 | << "X4=" << xcl[4] | |
2216 | << "X5=" << xcl[5] | |
2217 | << "Chi2R=" << chi2R | |
2218 | << "Chi2Z=" << chi2Z | |
2219 | << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track | |
2220 | << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track | |
2221 | << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt | |
2222 | << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const | |
2223 | << "Chi2TR=" << chi2TR // Chi2 without vertex constrain | |
2224 | << "Chi2TC=" << chi2TC // Chi2 with vertex constrain | |
2225 | << "C=" << curv // Non constrained - no tilt correction | |
2226 | << "DR=" << dR // DR parameter - tilt correction | |
2227 | << "DCA=" << dca // DCA - tilt correction | |
2228 | << "CR=" << cR // Non constrained curvature - tilt correction | |
2229 | << "CC=" << cC // Constrained curvature | |
2230 | << "Polz0=" << polz0c | |
2231 | << "Polz1=" << polz1c | |
2232 | << "RPolz0=" << rpolz0 | |
2233 | << "RPolz1=" << rpolz1 | |
2234 | << "Ncl=" << nclusters | |
2235 | << "Nlayers=" << nlayers | |
2236 | << "NUsedS=" << nusedCl | |
2237 | << "NUsed=" << nusedf | |
2238 | << "Findable=" << findable | |
2239 | << "Like=" << like | |
2240 | << "LikePrim=" << likePrim | |
2241 | << "Likechi2C=" << likechi2C | |
2242 | << "Likechi2TR=" << likechi2TR | |
2243 | << "Likezf=" << likezf | |
2244 | << "LikeF=" << seedquality2[registered] | |
2245 | << "S0.=" << &cseed[0] | |
2246 | << "S1.=" << &cseed[1] | |
2247 | << "S2.=" << &cseed[2] | |
2248 | << "S3.=" << &cseed[3] | |
2249 | << "S4.=" << &cseed[4] | |
2250 | << "S5.=" << &cseed[5] | |
2251 | << "SB0.=" << &seedb[0] | |
2252 | << "SB1.=" << &seedb[1] | |
2253 | << "SB2.=" << &seedb[2] | |
2254 | << "SB3.=" << &seedb[3] | |
2255 | << "SB4.=" << &seedb[4] | |
2256 | << "SB5.=" << &seedb[5] | |
2257 | << "Label=" << label | |
2258 | << "Freq=" << frequency | |
2259 | << "sLayer=" << sLayer | |
2260 | << "\n"; | |
2261 | } | |
69b55c55 | 2262 | } |
4551ea7c | 2263 | |
2264 | if (registered<kMaxSeed - 1) { | |
69b55c55 | 2265 | registered++; |
2266 | cseed = seed[registered]; | |
2267 | } | |
4551ea7c | 2268 | |
2269 | } // End of loop over layer 1 | |
2270 | ||
2271 | } // End of loop over layer 0 | |
2272 | ||
2273 | } // End of loop over layer 3 | |
2274 | ||
2275 | } // End of loop over seeding time bins | |
2276 | ||
69b55c55 | 2277 | // |
4551ea7c | 2278 | // Choose best |
69b55c55 | 2279 | // |
4551ea7c | 2280 | |
69b55c55 | 2281 | TMath::Sort(registered,seedquality2,sort,kTRUE); |
c6f438c0 | 2282 | Bool_t signedseed[kMaxSeed]; |
4551ea7c | 2283 | for (Int_t i = 0; i < registered; i++) { |
2284 | signedseed[i] = kFALSE; | |
69b55c55 | 2285 | } |
4551ea7c | 2286 | |
7bce990c | 2287 | for (Int_t jter = 0; jter < 5; jter++) { |
4551ea7c | 2288 | |
2289 | for (Int_t iseed = 0; iseed < registered; iseed++) { | |
2290 | ||
69b55c55 | 2291 | Int_t index = sort[iseed]; |
4551ea7c | 2292 | if (signedseed[index]) { |
2293 | continue; | |
2294 | } | |
69b55c55 | 2295 | Int_t labelsall[1000]; |
4551ea7c | 2296 | Int_t nlabelsall = 0; |
2297 | Int_t naccepted = 0;; | |
2298 | Int_t sLayer = seedlayer[index]; | |
2299 | Int_t ncl = 0; | |
2300 | Int_t nused = 0; | |
2301 | Int_t nlayers = 0; | |
69b55c55 | 2302 | Int_t findable = 0; |
4551ea7c | 2303 | |
2304 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
2305 | ||
ca1e1e5b | 2306 | if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) { |
69b55c55 | 2307 | findable++; |
4551ea7c | 2308 | } |
2309 | if (seed[index][jLayer].IsOK()) { | |
69b55c55 | 2310 | seed[index][jLayer].UpdateUsed(); |
ca1e1e5b | 2311 | ncl +=seed[index][jLayer].GetN2(); |
2312 | nused +=seed[index][jLayer].GetNUsed(); | |
69b55c55 | 2313 | nlayers++; |
4551ea7c | 2314 | // Cooking label |
2315 | for (Int_t itime = 0; itime < 25; itime++) { | |
ca1e1e5b | 2316 | if (seed[index][jLayer].IsUsable(itime)) { |
69b55c55 | 2317 | naccepted++; |
4551ea7c | 2318 | for (Int_t ilab = 0; ilab < 3; ilab++) { |
ca1e1e5b | 2319 | Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab); |
4551ea7c | 2320 | if (tindex >= 0) { |
69b55c55 | 2321 | labelsall[nlabelsall] = tindex; |
2322 | nlabelsall++; | |
2323 | } | |
2324 | } | |
2325 | } | |
2326 | } | |
2327 | } | |
4551ea7c | 2328 | |
69b55c55 | 2329 | } |
4551ea7c | 2330 | |
2331 | if (nused > 30) { | |
2332 | continue; | |
69b55c55 | 2333 | } |
4551ea7c | 2334 | |
7bce990c | 2335 | if (jter == 0) { |
4551ea7c | 2336 | if (nlayers < 6) { |
2337 | continue; | |
2338 | } | |
2339 | if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { | |
2340 | continue; // Gold | |
2341 | } | |
7ad19338 | 2342 | } |
4551ea7c | 2343 | |
7bce990c | 2344 | if (jter == 1) { |
4551ea7c | 2345 | if (nlayers < findable) { |
2346 | continue; | |
2347 | } | |
2348 | if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) { | |
2349 | continue; | |
2350 | } | |
2351 | } | |
2352 | ||
7bce990c | 2353 | if (jter == 2) { |
4551ea7c | 2354 | if ((nlayers == findable) || |
2355 | (nlayers == 6)) { | |
2356 | continue; | |
2357 | } | |
2358 | if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) { | |
2359 | continue; | |
2360 | } | |
69b55c55 | 2361 | } |
4551ea7c | 2362 | |
7bce990c | 2363 | if (jter == 3) { |
4551ea7c | 2364 | if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { |
2365 | continue; | |
2366 | } | |
69b55c55 | 2367 | } |
4551ea7c | 2368 | |
7bce990c | 2369 | if (jter == 4) { |
4551ea7c | 2370 | if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) { |
2371 | continue; | |
2372 | } | |
69b55c55 | 2373 | } |
4551ea7c | 2374 | |
69b55c55 | 2375 | signedseed[index] = kTRUE; |
4551ea7c | 2376 | |
2377 | Int_t labels[1000]; | |
2378 | Int_t outlab[1000]; | |
2379 | Int_t nlab = 0; | |
2380 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2381 | if (seed[index][iLayer].IsOK()) { | |
ca1e1e5b | 2382 | if (seed[index][iLayer].GetLabels(0) >= 0) { |
2383 | labels[nlab] = seed[index][iLayer].GetLabels(0); | |
69b55c55 | 2384 | nlab++; |
2385 | } | |
ca1e1e5b | 2386 | if (seed[index][iLayer].GetLabels(1) >= 0) { |
2387 | labels[nlab] = seed[index][iLayer].GetLabels(1); | |
69b55c55 | 2388 | nlab++; |
4551ea7c | 2389 | } |
2390 | } | |
7ad19338 | 2391 | } |
69b55c55 | 2392 | Freq(nlab,labels,outlab,kFALSE); |
4551ea7c | 2393 | Int_t label = outlab[0]; |
2394 | Int_t frequency = outlab[1]; | |
69b55c55 | 2395 | Freq(nlabelsall,labelsall,outlab,kFALSE); |
4551ea7c | 2396 | Int_t label1 = outlab[0]; |
2397 | Int_t label2 = outlab[2]; | |
2398 | Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted); | |
2399 | Float_t ratio = Float_t(nused) / Float_t(ncl); | |
2400 | if (ratio < 0.25) { | |
2401 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
2402 | if ((seed[index][jLayer].IsOK()) && | |
ca1e1e5b | 2403 | (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) { |
4551ea7c | 2404 | seed[index][jLayer].UseClusters(); // Sign gold |
2405 | } | |
69b55c55 | 2406 | } |
7ad19338 | 2407 | } |
4551ea7c | 2408 | |
31fd97b2 | 2409 | Int_t eventNrInFile = esd->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number. |
4551ea7c | 2410 | TTreeSRedirector &cstream = *fDebugStreamer; |
2411 | ||
69b55c55 | 2412 | // |
4551ea7c | 2413 | // Register seed |
69b55c55 | 2414 | // |
4551ea7c | 2415 | AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]); |
2416 | AliTRDtrack dummy; | |
2417 | if (!track) { | |
2418 | track = &dummy; | |
2419 | } | |
2420 | else { | |
69b55c55 | 2421 | AliESDtrack esdtrack; |
4551ea7c | 2422 | esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout); |
69b55c55 | 2423 | esdtrack.SetLabel(label); |
2424 | esd->AddTrack(&esdtrack); | |
3a039a31 | 2425 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
4551ea7c | 2426 | cstream << "Tracks" |
31fd97b2 | 2427 | << "EventNrInFile=" << eventNrInFile |
4551ea7c | 2428 | << "ESD.=" << &esdtrack |
2429 | << "trd.=" << track | |
2430 | << "trdback.=" << track | |
2431 | << "\n"; | |
2432 | } | |
7ad19338 | 2433 | } |
4551ea7c | 2434 | |
3a039a31 | 2435 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
4551ea7c | 2436 | cstream << "Seeds2" |
7bce990c | 2437 | << "Iter=" << jter |
4551ea7c | 2438 | << "Track.=" << track |
2439 | << "Like=" << seedquality[index] | |
2440 | << "LikeF=" << seedquality2[index] | |
2441 | << "S0.=" << &seed[index][0] | |
2442 | << "S1.=" << &seed[index][1] | |
2443 | << "S2.=" << &seed[index][2] | |
2444 | << "S3.=" << &seed[index][3] | |
2445 | << "S4.=" << &seed[index][4] | |
2446 | << "S5.=" << &seed[index][5] | |
2447 | << "Label=" << label | |
2448 | << "Label1=" << label1 | |
2449 | << "Label2=" << label2 | |
2450 | << "FakeRatio=" << fakeratio | |
2451 | << "Freq=" << frequency | |
2452 | << "Ncl=" << ncl | |
2453 | << "Nlayers=" << nlayers | |
2454 | << "Findable=" << findable | |
2455 | << "NUsed=" << nused | |
2456 | << "sLayer=" << sLayer | |
31fd97b2 | 2457 | << "EventNrInFile=" << eventNrInFile |
4551ea7c | 2458 | << "\n"; |
2459 | } | |
2460 | ||
2461 | } // Loop: iseed | |
2462 | ||
7bce990c | 2463 | } // Loop: jter |
4551ea7c | 2464 | |
2465 | } // End of loop over sectors | |
75bd7f81 | 2466 | |
69b55c55 | 2467 | delete [] pseed; |
75bd7f81 | 2468 | |
e4f2f73d | 2469 | return 0; |
69b55c55 | 2470 | } |
2471 | ||
5443e65e | 2472 | //_____________________________________________________________________________ |
4551ea7c | 2473 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const |
5443e65e | 2474 | { |
2475 | // | |
0c349049 | 2476 | // Reads AliTRDclusters from the file. |
2477 | // The names of the cluster tree and branches | |
a819a5f7 | 2478 | // should match the ones used in AliTRDclusterizer::WriteClusters() |
2479 | // | |
75bd7f81 | 2480 | |
4551ea7c | 2481 | Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster))); |
6c94f330 | 2482 | TObjArray *clusterArray = new TObjArray(nsize+1000); |
5443e65e | 2483 | |
4551ea7c | 2484 | TBranch *branch = clusterTree->GetBranch("TRDcluster"); |
c630aafd | 2485 | if (!branch) { |
4551ea7c | 2486 | AliError("Can't get the branch !"); |
c630aafd | 2487 | return 1; |
2488 | } | |
029cd327 | 2489 | branch->SetAddress(&clusterArray); |
5443e65e | 2490 | |
a819a5f7 | 2491 | // Loop through all entries in the tree |
4551ea7c | 2492 | Int_t nEntries = (Int_t) clusterTree->GetEntries(); |
2493 | Int_t nbytes = 0; | |
e4f2f73d | 2494 | AliTRDcluster *c = 0x0; |
a819a5f7 | 2495 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
2496 | ||
2497 | // Import the tree | |
4551ea7c | 2498 | nbytes += clusterTree->GetEvent(iEntry); |
5443e65e | 2499 | |
a819a5f7 | 2500 | // Get the number of points in the detector |
029cd327 | 2501 | Int_t nCluster = clusterArray->GetEntriesFast(); |
a819a5f7 | 2502 | // Loop through all TRD digits |
2503 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
e4f2f73d | 2504 | if(!(c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster))) continue; |
2505 | array->AddLast(c); | |
2506 | //printf("Add cluster 0x%x.\n", c); | |
4f1c04d3 | 2507 | clusterArray->RemoveAt(iCluster); |
a819a5f7 | 2508 | } |
4551ea7c | 2509 | |
a819a5f7 | 2510 | } |
029cd327 | 2511 | delete clusterArray; |
5443e65e | 2512 | |
c630aafd | 2513 | return 0; |
75bd7f81 | 2514 | |
a819a5f7 | 2515 | } |
2516 | ||
75bd7f81 | 2517 | //_____________________________________________________________________________ |
4551ea7c | 2518 | Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const |
3551db50 | 2519 | { |
2520 | // | |
2521 | // Get track space point with index i | |
2522 | // Origin: C.Cheshkov | |
2523 | // | |
2524 | ||
4551ea7c | 2525 | AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index); |
053767a4 | 2526 | Int_t idet = cl->GetDetector(); |
2527 | Int_t isector = fGeom->GetSector(idet); | |
2528 | Int_t istack = fGeom->GetStack(idet); | |
2529 | Int_t ilayer = fGeom->GetLayer(idet); | |
3551db50 | 2530 | Double_t local[3]; |
053767a4 | 2531 | local[0] = GetX(isector,ilayer,cl->GetLocalTimeBin()); |
4551ea7c | 2532 | local[1] = cl->GetY(); |
2533 | local[2] = cl->GetZ(); | |
3551db50 | 2534 | Double_t global[3]; |
2535 | fGeom->RotateBack(idet,local,global); | |
2536 | p.SetXYZ(global[0],global[1],global[2]); | |
053767a4 | 2537 | AliGeomManager::ELayerID iGeoLayer = AliGeomManager::kTRD1; |
2538 | switch (ilayer) { | |
3551db50 | 2539 | case 0: |
053767a4 | 2540 | iGeoLayer = AliGeomManager::kTRD1; |
3551db50 | 2541 | break; |
2542 | case 1: | |
053767a4 | 2543 | iGeoLayer = AliGeomManager::kTRD2; |
3551db50 | 2544 | break; |
2545 | case 2: | |
053767a4 | 2546 | iGeoLayer = AliGeomManager::kTRD3; |
3551db50 | 2547 | break; |
2548 | case 3: | |
053767a4 | 2549 | iGeoLayer = AliGeomManager::kTRD4; |
3551db50 | 2550 | break; |
2551 | case 4: | |
053767a4 | 2552 | iGeoLayer = AliGeomManager::kTRD5; |
3551db50 | 2553 | break; |
2554 | case 5: | |
053767a4 | 2555 | iGeoLayer = AliGeomManager::kTRD6; |
3551db50 | 2556 | break; |
2557 | }; | |
053767a4 | 2558 | Int_t modId = isector * fGeom->Nstack() + istack; |
2559 | UShort_t volid = AliGeomManager::LayerToVolUID(iGeoLayer,modId); | |
3551db50 | 2560 | p.SetVolumeID(volid); |
2561 | ||
2562 | return kTRUE; | |
2563 | ||
2564 | } | |
2565 | ||
75bd7f81 | 2566 | //_____________________________________________________________________________ |
4551ea7c | 2567 | void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const |
029cd327 | 2568 | { |
2569 | // | |
2570 | // This cooks a label. Mmmmh, smells good... | |
2571 | // | |
46d29e70 | 2572 | |
4551ea7c | 2573 | Int_t label = 123456789; |
2574 | Int_t index; | |
2575 | Int_t i; | |
2576 | Int_t j; | |
2577 | Int_t ncl = pt->GetNumberOfClusters(); | |
2578 | ||
2579 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1; | |
5443e65e | 2580 | |
029cd327 | 2581 | Bool_t labelAdded; |
46d29e70 | 2582 | |
6c94f330 | 2583 | Int_t **s = new Int_t* [kRange]; |
4551ea7c | 2584 | for (i = 0; i < kRange; i++) { |
d1b06c24 | 2585 | s[i] = new Int_t[2]; |
2586 | } | |
4551ea7c | 2587 | for (i = 0; i < kRange; i++) { |
2588 | s[i][0] = -1; | |
2589 | s[i][1] = 0; | |
46d29e70 | 2590 | } |
2591 | ||
4551ea7c | 2592 | Int_t t0; |
2593 | Int_t t1; | |
2594 | Int_t t2; | |
2595 | ||
2596 | for (i = 0; i < ncl; i++) { | |
2597 | index = pt->GetClusterIndex(i); | |
2598 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
6c94f330 | 2599 | t0=c->GetLabel(0); |
2600 | t1=c->GetLabel(1); | |
2601 | t2=c->GetLabel(2); | |
46d29e70 | 2602 | } |
2603 | ||
4551ea7c | 2604 | for (i = 0; i < ncl; i++) { |
2605 | index = pt->GetClusterIndex(i); | |
2606 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
2607 | for (Int_t k = 0; k < 3; k++) { | |
2608 | label = c->GetLabel(k); | |
2609 | labelAdded = kFALSE; | |
2610 | j = 0; | |
46d29e70 | 2611 | if (label >= 0) { |
4551ea7c | 2612 | while ((!labelAdded) && (j < kRange)) { |
2613 | if ((s[j][0] == label) || | |
2614 | (s[j][1] == 0)) { | |
2615 | s[j][0] = label; | |
2616 | s[j][1] = s[j][1] + 1; | |
2617 | labelAdded = kTRUE; | |
a9814c09 | 2618 | } |
2619 | j++; | |
2620 | } | |
46d29e70 | 2621 | } |
2622 | } | |
2623 | } | |
2624 | ||
4551ea7c | 2625 | Int_t max = 0; |
6c94f330 | 2626 | label = -123456789; |
46d29e70 | 2627 | |
4551ea7c | 2628 | for (i = 0; i < kRange; i++) { |
2629 | if (s[i][1] > max) { | |
2630 | max = s[i][1]; | |
2631 | label = s[i][0]; | |
46d29e70 | 2632 | } |
2633 | } | |
5443e65e | 2634 | |
4551ea7c | 2635 | for (i = 0; i < kRange; i++) { |
6c94f330 | 2636 | delete []s[i]; |
5443e65e | 2637 | } |
2638 | ||
6c94f330 | 2639 | delete []s; |
5443e65e | 2640 | |
4551ea7c | 2641 | if ((1.0 - Float_t(max)/ncl) > wrong) { |
2642 | label = -label; | |
2643 | } | |
5443e65e | 2644 | |
2645 | pt->SetLabel(label); | |
2646 | ||
46d29e70 | 2647 | } |
2648 | ||
75bd7f81 | 2649 | //_____________________________________________________________________________ |
4551ea7c | 2650 | void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const |
029cd327 | 2651 | { |
2652 | // | |
2653 | // Use clusters, but don't abuse them! | |
2654 | // | |
75bd7f81 | 2655 | |
4551ea7c | 2656 | const Float_t kmaxchi2 = 18; |
2657 | const Float_t kmincl = 10; | |
2658 | ||
2659 | AliTRDtrack *track = (AliTRDtrack *) t; | |
2660 | ||
2661 | Int_t ncl = t->GetNumberOfClusters(); | |
2662 | for (Int_t i = from; i < ncl; i++) { | |
2663 | Int_t index = t->GetClusterIndex(i); | |
2664 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
053767a4 | 2665 | Int_t ilayer = fGeom->GetLayer(c->GetDetector()); |
2666 | if (track->GetTracklets(ilayer).GetChi2() > kmaxchi2) { | |
4551ea7c | 2667 | continue; |
2668 | } | |
053767a4 | 2669 | if (track->GetTracklets(ilayer).GetN() < kmincl) { |
4551ea7c | 2670 | continue; |
2671 | } | |
2672 | if (!(c->IsUsed())) { | |
2673 | c->Use(); | |
2674 | } | |
5443e65e | 2675 | } |
5443e65e | 2676 | |
75bd7f81 | 2677 | } |
5443e65e | 2678 | |
75bd7f81 | 2679 | //_____________________________________________________________________________ |
029cd327 | 2680 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 2681 | { |
75bd7f81 | 2682 | // |
5443e65e | 2683 | // Parametrised "expected" error of the cluster reconstruction in Y |
75bd7f81 | 2684 | // |
5443e65e | 2685 | |
2686 | Double_t s = 0.08 * 0.08; | |
2687 | return s; | |
75bd7f81 | 2688 | |
5443e65e | 2689 | } |
2690 | ||
75bd7f81 | 2691 | //_____________________________________________________________________________ |
029cd327 | 2692 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 2693 | { |
75bd7f81 | 2694 | // |
5443e65e | 2695 | // Parametrised "expected" error of the cluster reconstruction in Z |
75bd7f81 | 2696 | // |
5443e65e | 2697 | |
4551ea7c | 2698 | Double_t s = 9.0 * 9.0 / 12.0; |
5443e65e | 2699 | return s; |
75bd7f81 | 2700 | |
5443e65e | 2701 | } |
2702 | ||
75bd7f81 | 2703 | //_____________________________________________________________________________ |
029cd327 | 2704 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 2705 | { |
2706 | // | |
029cd327 | 2707 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 2708 | // in tracking sector <sector> and plane <plane> |
2709 | // | |
2710 | ||
6c94f330 | 2711 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
4551ea7c | 2712 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
2713 | ||
5443e65e | 2714 | return fTrSec[sector]->GetLayer(pl)->GetX(); |
2715 | ||
2716 | } | |
2717 | ||
46d29e70 | 2718 | |
75bd7f81 | 2719 | //_____________________________________________________________________________ |
2720 | AliTRDtracker::AliTRDtrackingSector | |
ad670fba | 2721 | ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs) |
2722 | :fN(0) | |
2723 | ,fGeom(geo) | |
2724 | ,fGeomSector(gs) | |
5443e65e | 2725 | { |
2726 | // | |
2727 | // AliTRDtrackingSector Constructor | |
2728 | // | |
75bd7f81 | 2729 | |
7e448bcc | 2730 | AliTRDpadPlane *padPlane = 0; |
2731 | AliTRDpropagationLayer *ppl = 0; | |
a5cadd36 | 2732 | |
ad670fba | 2733 | // Get holes description from geometry |
053767a4 | 2734 | Bool_t holes[AliTRDgeometry::kNstack]; |
2735 | for (Int_t istack = 0; istack < AliTRDgeometry::kNstack; istack++) { | |
2736 | holes[istack] = fGeom->IsHole(0,istack,gs); | |
3c625a9b | 2737 | } |
3c625a9b | 2738 | |
ad670fba | 2739 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { |
2740 | fTimeBinIndex[i] = -1; | |
2741 | } | |
5443e65e | 2742 | |
ad670fba | 2743 | Double_t x; |
2744 | Double_t dx; | |
2745 | Double_t rho; | |
2746 | Double_t radLength; | |
5443e65e | 2747 | |
ad670fba | 2748 | // Add layers for each of the planes |
2749 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
a305677e | 2750 | //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
5443e65e | 2751 | |
053767a4 | 2752 | const Int_t kNstacks = AliTRDgeometry::Nstack(); |
a305677e | 2753 | Int_t tbIndex; |
ad670fba | 2754 | Double_t ymax = 0; |
2755 | Double_t ymaxsensitive = 0; | |
053767a4 | 2756 | Double_t *zc = new Double_t[kNstacks]; |
2757 | Double_t *zmax = new Double_t[kNstacks]; | |
2758 | Double_t *zmaxsensitive = new Double_t[kNstacks]; | |
3551db50 | 2759 | |
053767a4 | 2760 | for (Int_t layer = 0; layer < AliTRDgeometry::Nlayer(); layer++) { |
ad670fba | 2761 | |
053767a4 | 2762 | ymax = fGeom->GetChamberWidth(layer) / 2.0; |
2763 | padPlane = fGeom->GetPadPlane(layer,0); | |
ad670fba | 2764 | ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0; |
2765 | ||
053767a4 | 2766 | for (Int_t st = 0; st < kNstacks; st++) { |
2767 | zmax[st] = fGeom->GetChamberLength(layer,st) / 2.0; | |
ad670fba | 2768 | Float_t pad = padPlane->GetRowSize(1); |
053767a4 | 2769 | Float_t row0 = fGeom->GetRow0(layer,st,0); |
2770 | Int_t nPads = fGeom->GetRowMax(layer,st,0); | |
2771 | zmaxsensitive[st] = Float_t(nPads) * pad / 2.0; | |
2772 | zc[st] = -(pad * nPads) / 2.0 + row0; | |
5443e65e | 2773 | } |
2774 | ||
bcb6fb78 | 2775 | AliTRDcalibDB *fCalibration = AliTRDcalibDB::Instance(); |
2776 | dx = fCalibration->GetVdrift(0,0,0) | |
f162af62 | 2777 | / AliTRDCommonParam::Instance()->GetSamplingFrequency(); |
ad670fba | 2778 | rho = 0.00295 * 0.85; //???? |
2779 | radLength = 11.0; | |
5443e65e | 2780 | |
053767a4 | 2781 | Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(layer); |
a305677e | 2782 | //Double_t xbottom = x0 - dxDrift; |
ad670fba | 2783 | //Double_t xtop = x0 + dxAmp; |
bcb6fb78 | 2784 | |
2785 | //temporary !! (A.Bercuci) | |
053767a4 | 2786 | Int_t T0 = (Int_t)fCalibration->GetT0Average(AliTRDgeometry::GetDetector(layer, 2, gs)); |
ad670fba | 2787 | |
59393e34 | 2788 | Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
ad670fba | 2789 | for (Int_t iTime = 0; iTime < nTimeBins; iTime++) { |
2790 | ||
2791 | Double_t xlayer = iTime * dx - dxAmp; | |
2792 | //if (xlayer<0) xlayer = dxAmp / 2.0; | |
59393e34 | 2793 | x = x0 - xlayer; |
ad670fba | 2794 | |
053767a4 | 2795 | tbIndex = CookTimeBinIndex(layer,iTime); |
2796 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,layer); | |
3c625a9b | 2797 | ppl->SetYmax(ymax,ymaxsensitive); |
ad670fba | 2798 | ppl->SetZ(zc,zmax,zmaxsensitive); |
3c625a9b | 2799 | ppl->SetHoles(holes); |
bcb6fb78 | 2800 | if(iTime == T0) ppl->SetT0(); |
2801 | ||
2802 | InsertLayer(ppl); | |
ad670fba | 2803 | |
5443e65e | 2804 | } |
ad670fba | 2805 | |
5443e65e | 2806 | } |
2807 | ||
5443e65e | 2808 | MapTimeBinLayers(); |
ad670fba | 2809 | |
029cd327 | 2810 | delete [] zc; |
2811 | delete [] zmax; | |
4f1c04d3 | 2812 | delete [] zmaxsensitive; |
5443e65e | 2813 | |
2814 | } | |
2815 | ||
ad670fba | 2816 | //_____________________________________________________________________________ |
2817 | AliTRDtracker::AliTRDtrackingSector | |
2818 | ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/) | |
2819 | :fN(0) | |
2820 | ,fGeom(0) | |
2821 | ,fGeomSector(0) | |
2822 | { | |
2823 | // | |
2824 | // Copy constructor | |
2825 | // | |
2826 | ||
2827 | } | |
2828 | ||
0c349049 | 2829 | //_____________________________________________________________________________ |
2830 | AliTRDtracker::AliTRDtrackingSector | |
2831 | ::~AliTRDtrackingSector() | |
2832 | { | |
2833 | // | |
2834 | // Destructor | |
2835 | // | |
2836 | ||
2837 | for (Int_t i = 0; i < fN; i++) { | |
2838 | delete fLayers[i]; | |
2839 | } | |
2840 | ||
2841 | } | |
2842 | ||
75bd7f81 | 2843 | //_____________________________________________________________________________ |
2844 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2845 | ::CookTimeBinIndex(Int_t plane, Int_t localTB) const | |
5443e65e | 2846 | { |
2847 | // | |
0c349049 | 2848 | // Depending on the digitization parameters calculates global |
2849 | // (i.e. for a whole TRD stack of 6 planes) time bin index for | |
2850 | // timebin <localTB> in plane <plane> | |
59393e34 | 2851 | // |
75bd7f81 | 2852 | |
59393e34 | 2853 | Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
4551ea7c | 2854 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1; |
2855 | if (localTB < 0) { | |
2856 | return -1; | |
2857 | } | |
2858 | if (gtb < 0) { | |
2859 | return -1; | |
2860 | } | |
75bd7f81 | 2861 | |
5443e65e | 2862 | return gtb; |
5443e65e | 2863 | |
75bd7f81 | 2864 | } |
5443e65e | 2865 | |
75bd7f81 | 2866 | //_____________________________________________________________________________ |
2867 | void AliTRDtracker::AliTRDtrackingSector | |
2868 | ::MapTimeBinLayers() | |
5443e65e | 2869 | { |
2870 | // | |
2871 | // For all sensitive time bins sets corresponding layer index | |
2872 | // in the array fTimeBins | |
2873 | // | |
2874 | ||
2875 | Int_t index; | |
2876 | ||
4551ea7c | 2877 | for (Int_t i = 0; i < fN; i++) { |
2878 | ||
5443e65e | 2879 | index = fLayers[i]->GetTimeBinIndex(); |
6c94f330 | 2880 | |
4551ea7c | 2881 | if (index < 0) { |
2882 | continue; | |
2883 | } | |
2884 | if (index >= (Int_t) kMaxTimeBinIndex) { | |
2885 | //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n" | |
2886 | // ,index,kMaxTimeBinIndex-1)); | |
5443e65e | 2887 | continue; |
2888 | } | |
4551ea7c | 2889 | |
5443e65e | 2890 | fTimeBinIndex[index] = i; |
4551ea7c | 2891 | |
5443e65e | 2892 | } |
5443e65e | 2893 | |
75bd7f81 | 2894 | } |
5443e65e | 2895 | |
75bd7f81 | 2896 | //_____________________________________________________________________________ |
2897 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2898 | ::GetLayerNumber(Double_t x) const | |
5443e65e | 2899 | { |
2900 | // | |
2901 | // Returns the number of time bin which in radial position is closest to <x> | |
2902 | // | |
2903 | ||
4551ea7c | 2904 | if (x >= fLayers[fN-1]->GetX()) { |
2905 | return fN - 1; | |
2906 | } | |
2907 | if (x <= fLayers[ 0]->GetX()) { | |
2908 | return 0; | |
2909 | } | |
2910 | ||
2911 | Int_t b = 0; | |
2912 | Int_t e = fN - 1; | |
2913 | Int_t m = (b + e) / 2; | |
ad670fba | 2914 | |
4551ea7c | 2915 | for ( ; b < e; m = (b + e) / 2) { |
2916 | if (x > fLayers[m]->GetX()) { | |
2917 | b = m + 1; | |
2918 | } | |
2919 | else { | |
2920 | e = m; | |
2921 | } | |
5443e65e | 2922 | } |
75bd7f81 | 2923 | |
4551ea7c | 2924 | if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) { |
2925 | return m + 1; | |
2926 | } | |
2927 | else { | |
2928 | return m; | |
2929 | } | |
5443e65e | 2930 | |
2931 | } | |
2932 | ||
75bd7f81 | 2933 | //_____________________________________________________________________________ |
2934 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2935 | ::GetInnerTimeBin() const | |
5443e65e | 2936 | { |
2937 | // | |
2938 | // Returns number of the innermost SENSITIVE propagation layer | |
2939 | // | |
2940 | ||
2941 | return GetLayerNumber(0); | |
5443e65e | 2942 | |
75bd7f81 | 2943 | } |
5443e65e | 2944 | |
75bd7f81 | 2945 | //_____________________________________________________________________________ |
2946 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2947 | ::GetOuterTimeBin() const | |
5443e65e | 2948 | { |
2949 | // | |
2950 | // Returns number of the outermost SENSITIVE time bin | |
2951 | // | |
2952 | ||
2953 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2954 | |
75bd7f81 | 2955 | } |
5443e65e | 2956 | |
75bd7f81 | 2957 | //_____________________________________________________________________________ |
2958 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2959 | ::GetNumberOfTimeBins() const | |
5443e65e | 2960 | { |
2961 | // | |
2962 | // Returns number of SENSITIVE time bins | |
2963 | // | |
2964 | ||
4551ea7c | 2965 | Int_t tb; |
2966 | Int_t layer; | |
2967 | ||
2968 | for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) { | |
5443e65e | 2969 | layer = GetLayerNumber(tb); |
4551ea7c | 2970 | if (layer >= 0) { |
2971 | break; | |
2972 | } | |
5443e65e | 2973 | } |
75bd7f81 | 2974 | |
4551ea7c | 2975 | return tb + 1; |
5443e65e | 2976 | |
75bd7f81 | 2977 | } |
5443e65e | 2978 | |
75bd7f81 | 2979 | //_____________________________________________________________________________ |
2980 | void AliTRDtracker::AliTRDtrackingSector | |
4551ea7c | 2981 | ::InsertLayer(AliTRDpropagationLayer *pl) |
5443e65e | 2982 | { |
2983 | // | |
2984 | // Insert layer <pl> in fLayers array. | |
2985 | // Layers are sorted according to X coordinate. | |
75bd7f81 | 2986 | // |
5443e65e | 2987 | |
4551ea7c | 2988 | if (fN == ((Int_t) kMaxLayersPerSector)) { |
2989 | //AliWarning("Too many layers !\n"); | |
2990 | return; | |
2991 | } | |
2992 | ||
2993 | if (fN == 0) { | |
2994 | fLayers[fN++] = pl; | |
ad670fba | 2995 | return; |
2996 | } | |
2997 | ||
4551ea7c | 2998 | Int_t i = Find(pl->GetX()); |
2999 | ||
3000 | memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
3001 | ||
3002 | fLayers[i] = pl; | |
3003 | fN++; | |
5443e65e | 3004 | |
3005 | } | |
3006 | ||
75bd7f81 | 3007 | //_____________________________________________________________________________ |
3008 | Int_t AliTRDtracker::AliTRDtrackingSector | |
3009 | ::Find(Double_t x) const | |
5443e65e | 3010 | { |
3011 | // | |
3012 | // Returns index of the propagation layer nearest to X | |
3013 | // | |
3014 | ||
4551ea7c | 3015 | if (x <= fLayers[0]->GetX()) { |
3016 | return 0; | |
3017 | } | |
3018 | ||
3019 | if (x > fLayers[fN-1]->GetX()) { | |
3020 | return fN; | |
3021 | } | |
3022 | ||
3023 | Int_t b = 0; | |
3024 | Int_t e = fN-1; | |
3025 | Int_t m = (b + e) / 2; | |
3026 | ||
3027 | for (; b < e; m = (b + e) / 2) { | |
3028 | if (x > fLayers[m]->GetX()) { | |
3029 | b = m + 1; | |
3030 | } | |
3031 | else { | |
3032 | e = m; | |
3033 | } | |
5443e65e | 3034 | } |
7ad19338 | 3035 | |
75bd7f81 | 3036 | return m; |
7ad19338 | 3037 | |
75bd7f81 | 3038 | } |
7ad19338 | 3039 | |
75bd7f81 | 3040 | //_____________________________________________________________________________ |
4551ea7c | 3041 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c) |
75bd7f81 | 3042 | { |
3043 | // | |
3044 | // Returns correction factor for tilted pads geometry | |
3045 | // | |
5443e65e | 3046 | |
4551ea7c | 3047 | Int_t det = c->GetDetector(); |
053767a4 | 3048 | Int_t layer = fGeom->GetLayer(det); |
3049 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(layer,0); | |
4551ea7c | 3050 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
b8dc2353 | 3051 | |
4551ea7c | 3052 | if (fNoTilt) { |
3053 | h01 = 0; | |
3054 | } | |
75bd7f81 | 3055 | |
fd621f36 | 3056 | return h01; |
5443e65e | 3057 | |
75bd7f81 | 3058 | } |
c630aafd | 3059 | |
75bd7f81 | 3060 | //_____________________________________________________________________________ |
3061 | Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1 | |
4551ea7c | 3062 | , AliTRDtrack *track |
0c349049 | 3063 | , Int_t *clusters |
3064 | , AliTRDtracklet &tracklet) | |
4f1c04d3 | 3065 | { |
6c94f330 | 3066 | // |
0c349049 | 3067 | // Try to find the nearest clusters to the track in the time bins |
3068 | // between <t0> and <t1>. | |
3069 | // Also the corresponding tracklet is calculated | |
4551ea7c | 3070 | // Correction coeficients - depend on TRD parameters - to be changed accordingly |
3071 | // | |
3072 | ||
0c349049 | 3073 | const Int_t kN1 = 100; |
3074 | const Int_t kN2 = 10; | |
3075 | ||
3076 | Double_t x[kN1]; | |
3077 | Double_t yt[kN1]; | |
3078 | Double_t zt[kN1]; | |
3079 | Float_t zmean[kN1]; | |
3080 | Float_t nmean[kN1]; | |
3081 | ||
3082 | Double_t dz[kN2][kN1]; | |
3083 | Double_t dy[kN2][kN1]; | |
3084 | Int_t indexes[kN2][kN1]; // Indexes of the clusters in the road | |
3085 | Int_t best[kN2][kN1]; // Index of best matching cluster | |
3086 | AliTRDcluster *cl[kN2][kN1]; // Pointers to the clusters in the road | |
3087 | ||
3088 | Double_t xmean = 0.0; // Reference x | |
4551ea7c | 3089 | Int_t clfound = 0; |
0c349049 | 3090 | |
3091 | // Initialize the arrays | |
3092 | for (Int_t it = 0; it < kN1; it++) { | |
3093 | ||
3094 | x[it] = 0.0; | |
3095 | yt[it] = 0.0; | |
3096 | zt[it] = 0.0; | |
4551ea7c | 3097 | clusters[it] = -2; |
0c349049 | 3098 | zmean[it] = 0.0; |
3099 | nmean[it] = 0.0; | |
3100 | ||
3101 | for (Int_t ih = 0; ih < kN2; ih++) { | |
3102 | indexes[ih][it] = -2; | |
4551ea7c | 3103 | cl[ih][it] = 0; |
3104 | dz[ih][it] = -100.0; | |
3105 | dy[ih][it] = -100.0; | |
3106 | best[ih][it] = 0; | |
3107 | } | |
0c349049 | 3108 | |
4551ea7c | 3109 | } |
ad670fba | 3110 | |
4551ea7c | 3111 | Double_t x0 = track->GetX(); |
3112 | Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2())); | |
3113 | Int_t nall = 0; | |
3114 | Int_t nfound = 0; | |
3115 | Double_t h01 = 0.0; | |
053767a4 | 3116 | Int_t layer = -1; |
4551ea7c | 3117 | Int_t detector = -1; |
3118 | Float_t padlength = 0.0; | |
0c349049 | 3119 | |
4551ea7c | 3120 | AliTRDtrack track2(* track); |
3121 | Float_t snpy = track->GetSnp(); | |
60e55aee | 3122 | Float_t tany = TMath::Sqrt(snpy*snpy / ((1.-snpy)*(1.+snpy))); |
4551ea7c | 3123 | if (snpy < 0.0) { |
3124 | tany *= -1.0; | |
3125 | } | |
ad670fba | 3126 | |
6c23ffed | 3127 | Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt()); |
4551ea7c | 3128 | Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl()); |
3129 | Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2); | |
3130 | if (road > 6.0) { | |
3131 | road = 6.0; | |
3132 | } | |
3133 | ||
3134 | for (Int_t it = 0; it < t1-t0; it++) { | |
3135 | ||
3136 | Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 }; | |
3137 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0)); | |
3138 | if (timeBin == 0) { | |
3139 | continue; // No indexes1 | |
6c94f330 | 3140 | } |
4551ea7c | 3141 | |
3142 | Int_t maxn = timeBin; | |
3143 | x[it] = timeBin.GetX(); | |
7ad19338 | 3144 | track2.PropagateTo(x[it]); |
6c94f330 | 3145 | yt[it] = track2.GetY(); |
3146 | zt[it] = track2.GetZ(); | |
7ad19338 | 3147 | |
4551ea7c | 3148 | Double_t y = yt[it]; |
3149 | Double_t z = zt[it]; | |
3150 | Double_t chi2 = 1000000.0; | |
4f1c04d3 | 3151 | nall++; |
4551ea7c | 3152 | |
4f1c04d3 | 3153 | // |
4551ea7c | 3154 | // Find 2 nearest cluster at given time bin |
6c94f330 | 3155 | // |
0c349049 | 3156 | Int_t checkPoint[4] = { 0, 0, 0, 0 }; |
3157 | Double_t minY = 123456789.0; | |
3158 | Double_t minD[2] = { 1.0, 1.0 }; | |
7e448bcc | 3159 | |
4551ea7c | 3160 | for (Int_t i = timeBin.Find(y - road); i < maxn; i++) { |
3161 | ||
3162 | AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]); | |
7ad19338 | 3163 | h01 = GetTiltFactor(c); |
053767a4 | 3164 | if (layer < 0) { |
c6f438c0 | 3165 | Int_t det = c->GetDetector(); |
053767a4 | 3166 | layer = fGeom->GetLayer(det); |
4551ea7c | 3167 | padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0); |
3168 | } | |
7e448bcc | 3169 | |
4551ea7c | 3170 | if (c->GetY() > (y + road)) { |
3171 | break; | |
3172 | } | |
7e448bcc | 3173 | |
3174 | fHDeltaX->Fill(c->GetX() - x[it]); | |
7e448bcc | 3175 | |
3176 | if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) { | |
0c349049 | 3177 | minY = c->GetY() - y; |
3178 | minD[0] = c->GetY() - y; | |
3179 | minD[1] = c->GetZ() - z; | |
7e448bcc | 3180 | } |
3181 | ||
3182 | checkPoint[0]++; | |
3183 | ||
3184 | fHMinZ->Fill(c->GetZ() - z); | |
3185 | if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) { | |
4551ea7c | 3186 | continue; |
7ad19338 | 3187 | } |
7e448bcc | 3188 | checkPoint[1]++; |
7ad19338 | 3189 | |
4551ea7c | 3190 | Double_t dist = TMath::Abs(c->GetZ() - z); |
0c349049 | 3191 | if (dist > (0.5 * padlength + 6.0 * sigmaz)) { |
4551ea7c | 3192 | continue; // 6 sigma boundary cut |
3193 | } | |
7e448bcc | 3194 | checkPoint[2]++; |
3195 | ||
4551ea7c | 3196 | // Sigma boundary cost function |
0c349049 | 3197 | Double_t cost = 0.0; |
4551ea7c | 3198 | if (dist> (0.5 * padlength - sigmaz)){ |
3199 | cost = (dist - 0.5*padlength) / (2.0 * sigmaz); | |
3200 | if (cost > -1) { | |
3201 | cost = (cost + 1.0) * (cost + 1.0); | |
3202 | } | |
3203 | else { | |
3204 | cost = 0.0; | |
3205 | } | |
3206 | } | |
4551ea7c | 3207 | chi2 = track2.GetPredictedChi2(c,h01) + cost; |
7ad19338 | 3208 | clfound++; |
6c94f330 | 3209 | |
4551ea7c | 3210 | if (chi2 > maxChi2[1]) { |
3211 | continue; | |
3212 | } | |
7e448bcc | 3213 | checkPoint[3]++; |
3214 | ||
4551ea7c | 3215 | // Store the clusters in the road |
0c349049 | 3216 | detector = c->GetDetector(); |
4551ea7c | 3217 | for (Int_t ih = 2; ih < 9; ih++) { |
3218 | if (cl[ih][it] == 0) { | |
3219 | cl[ih][it] = c; | |
3220 | indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers | |
7ad19338 | 3221 | break; |
3222 | } | |
4f1c04d3 | 3223 | } |
4551ea7c | 3224 | |
3225 | if (chi2 < maxChi2[0]) { | |
7ad19338 | 3226 | maxChi2[1] = maxChi2[0]; |
3227 | maxChi2[0] = chi2; | |
3228 | indexes[1][it] = indexes[0][it]; | |
3229 | cl[1][it] = cl[0][it]; | |
3230 | indexes[0][it] = timeBin.GetIndex(i); | |
3231 | cl[0][it] = c; | |
3232 | continue; | |
3233 | } | |
4551ea7c | 3234 | maxChi2[1] = chi2; |
3235 | cl[1][it] = c; | |
3236 | indexes[1][it] = timeBin.GetIndex(i); | |
3237 | ||
3238 | } | |
7e448bcc | 3239 | |
0c349049 | 3240 | for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) { |
7e448bcc | 3241 | fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]); |
0c349049 | 3242 | } |
7e448bcc | 3243 | |
3244 | if (checkPoint[3]) { | |
0c349049 | 3245 | if (track->GetSignedPt() > 0) { |
3246 | fHMinYPos->Fill(minY); | |
3247 | } | |
3248 | else { | |
3249 | fHMinYNeg->Fill(minY); | |
3250 | } | |
3251 | fHMinD->Fill(minD[0],minD[1]); | |
3252 | } | |
4551ea7c | 3253 | |
3254 | if (cl[0][it]) { | |
7ad19338 | 3255 | nfound++; |
3256 | xmean += x[it]; | |
3257 | } | |
4551ea7c | 3258 | |
4f1c04d3 | 3259 | } |
4551ea7c | 3260 | |
3261 | if (nfound < 4) { | |
3262 | return 0; | |
3263 | } | |
3264 | xmean /= Float_t(nfound); // Middle x | |
3265 | track2.PropagateTo(xmean); // Propagate track to the center | |
3266 | ||
4f1c04d3 | 3267 | // |
4551ea7c | 3268 | // Choose one of the variants |
7ad19338 | 3269 | // |
4551ea7c | 3270 | Float_t sumz = 0.0; |
3271 | Float_t sum = 0.0; | |
3272 | Double_t sumdy = 0.0; | |
3273 | Double_t sumdy2 = 0.0; | |
3274 | Double_t sumx = 0.0; | |
3275 | Double_t sumxy = 0.0; | |
3276 | Double_t sumx2 = 0.0; | |
3277 | Double_t mpads = 0.0; | |
3278 | ||
0c349049 | 3279 | Int_t changes[kN2]; |
3280 | ||
3281 | Int_t ngood[kN2]; | |
3282 | Int_t nbad[kN2]; | |
4551ea7c | 3283 | |
0c349049 | 3284 | Double_t meanz[kN2]; |
3285 | Double_t moffset[kN2]; // Mean offset | |
3286 | Double_t mean[kN2]; // Mean value | |
3287 | Double_t angle[kN2]; // Angle | |
4551ea7c | 3288 | |
0c349049 | 3289 | Double_t smoffset[kN2]; // Sigma of mean offset |
3290 | Double_t smean[kN2]; // Sigma of mean value | |
3291 | Double_t sangle[kN2]; // Sigma of angle | |
3292 | Double_t smeanangle[kN2]; // Correlation | |
4551ea7c | 3293 | |
0c349049 | 3294 | Double_t sigmas[kN2]; |
3295 | Double_t tchi2s[kN2]; // Chi2s for tracklet | |
ad670fba | 3296 | |
0c349049 | 3297 | for (Int_t it = 0; it < kN2; it++) { |
ad670fba | 3298 | |
4551ea7c | 3299 | ngood[it] = 0; |
3300 | nbad[it] = 0; | |
3301 | ||
3302 | meanz[it] = 0.0; | |
0c349049 | 3303 | moffset[it] = 0.0; // Mean offset |
3304 | mean[it] = 0.0; // Mean value | |
3305 | angle[it] = 0.0; // Angle | |
4551ea7c | 3306 | |
7e448bcc | 3307 | smoffset[it] = 1.0e5; // Sigma of mean offset |
3308 | smean[it] = 1.0e5; // Sigma of mean value | |
3309 | sangle[it] = 1.0e5; // Sigma of angle | |
0c349049 | 3310 | smeanangle[it] = 0.0; // Correlation |
4551ea7c | 3311 | |
7e448bcc | 3312 | sigmas[it] = 1.0e5; |
3313 | tchi2s[it] = 1.0e5; // Chi2s for tracklet | |
75bd7f81 | 3314 | |
3315 | } | |
3316 | ||
7ad19338 | 3317 | // |
4551ea7c | 3318 | // Calculate zmean |
7ad19338 | 3319 | // |
4551ea7c | 3320 | for (Int_t it = 0; it < t1 - t0; it++) { |
3321 | if (!cl[0][it]) { | |
3322 | continue; | |
3323 | } | |
3324 | for (Int_t dt = -3; dt <= 3; dt++) { | |
3325 | if (it+dt < 0) { | |
3326 | continue; | |
3327 | } | |
3328 | if (it+dt > t1-t0) { | |
3329 | continue; | |
3330 | } | |
3331 | if (!cl[0][it+dt]) { | |
3332 | continue; | |
3333 | } | |
3334 | zmean[it] += cl[0][it+dt]->GetZ(); | |
3335 | nmean[it] += 1.0; | |
7ad19338 | 3336 | } |
4551ea7c | 3337 | zmean[it] /= nmean[it]; |
7ad19338 | 3338 | } |
4551ea7c | 3339 | |
3340 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3341 | ||
3342 | best[0][it] = 0; | |
3343 | ||
3344 | for (Int_t ih = 0; ih < 10; ih++) { | |
3345 | dz[ih][it] = -100.0; | |
3346 | dy[ih][it] = -100.0; | |
3347 | if (!cl[ih][it]) { | |
3348 | continue; | |
3349 | } | |
3350 | Double_t xcluster = cl[ih][it]->GetX(); | |
3351 | Double_t ytrack; | |
3352 | Double_t ztrack; | |
3353 | track2.GetProlongation(xcluster,ytrack,ztrack ); | |
3354 | dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z | |
3355 | dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y | |
7ad19338 | 3356 | } |
4551ea7c | 3357 | |
3358 | // Minimize changes | |
3359 | if (!cl[0][it]) { | |
3360 | continue; | |
3361 | } | |
3362 | if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) && | |
3363 | (cl[1][it])) { | |
3364 | if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) { | |
3365 | best[0][it] = 1; | |
4f1c04d3 | 3366 | } |
4551ea7c | 3367 | } |
3368 | ||
7ad19338 | 3369 | } |
4551ea7c | 3370 | |
7ad19338 | 3371 | // |
4551ea7c | 3372 | // Iterative choice of "best path" |
6c94f330 | 3373 | // |
4551ea7c | 3374 | Int_t label = TMath::Abs(track->GetLabel()); |
3375 | Int_t bestiter = 0; | |
3376 | ||
3377 | for (Int_t iter = 0; iter < 9; iter++) { | |
3378 | ||
3379 | changes[iter] = 0; | |
3380 | sumz = 0; | |
3381 | sum = 0; | |
3382 | sumdy = 0; | |
3383 | sumdy2 = 0; | |
3384 | sumx = 0; | |
3385 | sumx2 = 0; | |
3386 | sumxy = 0; | |
3387 | mpads = 0; | |
3388 | ngood[iter] = 0; | |
3389 | nbad[iter] = 0; | |
3390 | ||
3391 | // Linear fit | |
3392 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3393 | ||
3394 | if (!cl[best[iter][it]][it]) { | |
3395 | continue; | |
3396 | } | |
3397 | ||
3398 | // Calculates pad-row changes | |
3399 | Double_t zbefore = cl[best[iter][it]][it]->GetZ(); | |
3400 | Double_t zafter = cl[best[iter][it]][it]->GetZ(); | |
3401 | for (Int_t itd = it - 1; itd >= 0; itd--) { | |
7ad19338 | 3402 | if (cl[best[iter][itd]][itd]) { |
4551ea7c | 3403 | zbefore = cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3404 | break; |
3405 | } | |
3406 | } | |
4551ea7c | 3407 | for (Int_t itd = it + 1; itd < t1 - t0; itd++) { |
7ad19338 | 3408 | if (cl[best[iter][itd]][itd]) { |
4551ea7c | 3409 | zafter = cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3410 | break; |
3411 | } | |
3412 | } | |
4551ea7c | 3413 | if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) && |
3414 | (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) { | |
3415 | changes[iter]++; | |
3416 | } | |
3417 | ||
0c349049 | 3418 | // Distance to reference x |
3419 | Double_t dx = x[it]-xmean; | |
4551ea7c | 3420 | sumz += cl[best[iter][it]][it]->GetZ(); |
4f1c04d3 | 3421 | sum++; |
4551ea7c | 3422 | sumdy += dy[best[iter][it]][it]; |
3423 | sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it]; | |
3424 | sumx += dx; | |
3425 | sumx2 += dx*dx; | |
7ad19338 | 3426 | sumxy += dx*dy[best[iter][it]][it]; |
4551ea7c | 3427 | mpads += cl[best[iter][it]][it]->GetNPads(); |
3428 | if ((cl[best[iter][it]][it]->GetLabel(0) == label) || | |
3429 | (cl[best[iter][it]][it]->GetLabel(1) == label) || | |
3430 | (cl[best[iter][it]][it]->GetLabel(2) == label)) { | |
7ad19338 | 3431 | ngood[iter]++; |
4f1c04d3 | 3432 | } |
4551ea7c | 3433 | else { |
7ad19338 | 3434 | nbad[iter]++; |
4f1c04d3 | 3435 | } |
4551ea7c | 3436 | |
4f1c04d3 | 3437 | } |
4551ea7c | 3438 | |
7ad19338 | 3439 | // |
0c349049 | 3440 | // Calculates line parameters |
7ad19338 | 3441 | // |
4551ea7c | 3442 | Double_t det = sum*sumx2 - sumx*sumx; |
3443 | angle[iter] = (sum*sumxy - sumx*sumdy) / det; | |
3444 | mean[iter] = (sumx2*sumdy - sumx*sumxy) / det; | |
0c349049 | 3445 | meanz[iter] = sumz / sum; |
4551ea7c | 3446 | moffset[iter] = sumdy / sum; |
3447 | mpads /= sum; // Mean number of pads | |
3448 | ||
3449 | Double_t sigma2 = 0.0; // Normalized residuals - for line fit | |
3450 | Double_t sigma1 = 0.0; // Normalized residuals - constant fit | |
3451 | ||
3452 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3453 | if (!cl[best[iter][it]][it]) { | |
3454 | continue; | |
3455 | } | |
3456 | Double_t dx = x[it] - xmean; | |
3457 | Double_t ytr = mean[iter] + angle[iter] * dx; | |
3458 | sigma2 += (dy[best[iter][it]][it] - ytr) | |
3459 | * (dy[best[iter][it]][it] - ytr); | |
3460 | sigma1 += (dy[best[iter][it]][it] - moffset[iter]) | |
3461 | * (dy[best[iter][it]][it] - moffset[iter]); | |
7ad19338 | 3462 | sum++; |
4f1c04d3 | 3463 | } |
4551ea7c | 3464 | sigma2 /= (sum - 2); // Normalized residuals |
3465 | sigma1 /= (sum - 1); // Normalized residuals | |
3466 | smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean | |
3467 | sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle | |
3468 | smeanangle[iter] = sigma2 * (-sumx / det); // Correlation | |
3469 | sigmas[iter] = TMath::Sqrt(sigma1); | |
3470 | smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma | |
3471 | ||
6c94f330 | 3472 | // |
4551ea7c | 3473 | // Iterative choice of "better path" |
6c94f330 | 3474 | // |
4551ea7c | 3475 | for (Int_t it = 0; it < t1 - t0; it++) { |
3476 | ||
3477 | if (!cl[best[iter][it]][it]) { | |
3478 | continue; | |
3479 | } | |
3480 | ||
3481 | // Add unisochronity + angular effect contribution | |
3482 | Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany; | |
3483 | Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2(); | |
3484 | Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean | |
3485 | Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2()); | |
3486 | Double_t mindist = 100000.0; | |
3487 | Int_t ihbest = 0; | |
3488 | ||
0c349049 | 3489 | for (Int_t ih = 0; ih < kN2; ih++) { |
4551ea7c | 3490 | if (!cl[ih][it]) { |
3491 | break; | |
3492 | } | |
3493 | Double_t dist2 = (dy[ih][it] - weighty) / sigmacl; | |
3494 | dist2 *= dist2; // Chi2 distance | |
3495 | if (dist2 < mindist) { | |
7ad19338 | 3496 | mindist = dist2; |
4551ea7c | 3497 | ihbest = ih; |
7ad19338 | 3498 | } |
3499 | } | |
0c349049 | 3500 | |
4551ea7c | 3501 | best[iter+1][it] = ihbest; |
0c349049 | 3502 | |
4f1c04d3 | 3503 | } |
4551ea7c | 3504 | |
4f1c04d3 | 3505 | // |
4551ea7c | 3506 | // Update best hypothesy if better chi2 according tracklet position and angle |
7ad19338 | 3507 | // |
7bce990c | 3508 | sy2 = smean[iter] + track->GetSigmaY2(); |
4551ea7c | 3509 | Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee; |
3510 | Double_t say = track->GetSigmaSnpY(); // track->fCey; | |
6c94f330 | 3511 | |
4551ea7c | 3512 | Double_t detchi = sy2*sa2 - say*say; |
3513 | Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix | |
4f1c04d3 | 3514 | |
4551ea7c | 3515 | Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0] |
3516 | + angle[bestiter] * angle[bestiter] * invers[1] | |
3517 | + 2.0 * mean[bestiter] * angle[bestiter] * invers[2]; | |
3518 | Double_t chi21 = mean[iter] * mean[iter] * invers[0] | |
3519 | + angle[iter] * angle[iter] * invers[1] | |
3520 | + 2.0 * mean[iter] * angle[iter] * invers[2]; | |
3521 | tchi2s[iter] = chi21; | |
3522 | ||
3523 | if ((changes[iter] <= changes[bestiter]) && | |
3524 | (chi21 < chi20)) { | |
3525 | bestiter = iter; | |
7ad19338 | 3526 | } |
4551ea7c | 3527 | |
7ad19338 | 3528 | } |
4551ea7c | 3529 | |
7ad19338 | 3530 | // |
4551ea7c | 3531 | // Set clusters |
7ad19338 | 3532 | // |
4551ea7c | 3533 | Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration |
3534 | Short_t maxpos = -1; | |
3535 | Float_t maxcharge = 0.0; | |
3536 | Short_t maxpos4 = -1; | |
3537 | Float_t maxcharge4 = 0.0; | |
3538 | Short_t maxpos5 = -1; | |
3539 | Float_t maxcharge5 = 0.0; | |
8979685e | 3540 | |
a076fc2f | 3541 | Double_t exB = AliTRDCommonParam::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)); |
4551ea7c | 3542 | Double_t expectederr = sigma2*sigma2 + 0.01*0.01; |
3543 | if (mpads > 3.5) { | |
3544 | expectederr += (mpads - 3.5) * 0.04; | |
3545 | } | |
3546 | if (changes[bestiter] > 1) { | |
3547 | expectederr += changes[bestiter] * 0.01; | |
3548 | } | |
3549 | expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0; | |
4551ea7c | 3550 | |
3551 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3552 | ||
3553 | if (!cl[best[bestiter][it]][it]) { | |
3554 | continue; | |
69b55c55 | 3555 | } |
4551ea7c | 3556 | |
0c349049 | 3557 | // Set cluster error |
1fd9389f | 3558 | ((AliCluster*)cl[best[bestiter][it]][it])->SetSigmaY2(expectederr); |
4551ea7c | 3559 | if (!cl[best[bestiter][it]][it]->IsUsed()) { |
3560 | cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY()); | |
4551ea7c | 3561 | } |
3562 | ||
3563 | // Time bins with maximal charge | |
3564 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { | |
69b55c55 | 3565 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3566 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3567 | } |
6c94f330 | 3568 | |
4551ea7c | 3569 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { |
3570 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { | |
69b55c55 | 3571 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3572 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3573 | } |
3574 | } | |
4551ea7c | 3575 | |
3576 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { | |
3577 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { | |
69b55c55 | 3578 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3579 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3580 | } |
7ad19338 | 3581 | } |
4551ea7c | 3582 | |
3583 | // Time bins with maximal charge | |
3584 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { | |
8979685e | 3585 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3586 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3587 | } |
6c94f330 | 3588 | |
4551ea7c | 3589 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { |
3590 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { | |
8979685e | 3591 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3592 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3593 | } |
3594 | } | |
4551ea7c | 3595 | |
3596 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { | |
3597 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { | |
8979685e | 3598 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3599 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3600 | } |
3601 | } | |
4551ea7c | 3602 | |
7ad19338 | 3603 | clusters[it+t0] = indexes[best[bestiter][it]][it]; |
4551ea7c | 3604 | |
7ad19338 | 3605 | } |
4551ea7c | 3606 | |
4551ea7c | 3607 | // Set tracklet parameters |
4551ea7c | 3608 | Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01; |
3609 | if (mpads > 3.5) { | |
3610 | trackleterr2 += (mpads - 3.5) * 0.04; | |
3611 | } | |
3612 | trackleterr2 += changes[bestiter] * 0.01; | |
3613 | trackleterr2 *= TMath::Max(14.0 - nfound,1.0); | |
3614 | trackleterr2 += 0.2 * (tany-exB)*(tany-exB); | |
3615 | ||
4551ea7c | 3616 | tracklet.Set(xmean |
3617 | ,track2.GetY() + moffset[bestiter] | |
3618 | ,meanz[bestiter] | |
3619 | ,track2.GetAlpha() | |
3620 | ,trackleterr2); | |
7ad19338 | 3621 | tracklet.SetTilt(h01); |
3622 | tracklet.SetP0(mean[bestiter]); | |
3623 | tracklet.SetP1(angle[bestiter]); | |
3624 | tracklet.SetN(nfound); | |
3625 | tracklet.SetNCross(changes[bestiter]); | |
053767a4 | 3626 | tracklet.SetPlane(layer); |
7ad19338 | 3627 | tracklet.SetSigma2(expectederr); |
3628 | tracklet.SetChi2(tchi2s[bestiter]); | |
8979685e | 3629 | tracklet.SetMaxPos(maxpos,maxpos4,maxpos5); |
053767a4 | 3630 | track->SetTracklets(layer,tracklet); |
27eaf44b | 3631 | track->SetNWrong(track->GetNWrong() + nbad[0]); |
4551ea7c | 3632 | |
7ad19338 | 3633 | // |
3634 | // Debuging part | |
3635 | // | |
69b55c55 | 3636 | TClonesArray array0("AliTRDcluster"); |
3637 | TClonesArray array1("AliTRDcluster"); | |
4551ea7c | 3638 | array0.ExpandCreateFast(t1 - t0 + 1); |
3639 | array1.ExpandCreateFast(t1 - t0 + 1); | |
3640 | TTreeSRedirector &cstream = *fDebugStreamer; | |
7ad19338 | 3641 | AliTRDcluster dummy; |
3642 | Double_t dy0[100]; | |
8979685e | 3643 | Double_t dyb[100]; |
3644 | ||
4551ea7c | 3645 | for (Int_t it = 0; it < t1 - t0; it++) { |
7ad19338 | 3646 | dy0[it] = dy[0][it]; |
3647 | dyb[it] = dy[best[bestiter][it]][it]; | |
4551ea7c | 3648 | if (cl[0][it]) { |
7ad19338 | 3649 | new(array0[it]) AliTRDcluster(*cl[0][it]); |
3650 | } | |
4551ea7c | 3651 | else { |
7ad19338 | 3652 | new(array0[it]) AliTRDcluster(dummy); |
3653 | } | |
3654 | if(cl[best[bestiter][it]][it]) { | |
3655 | new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]); | |
3656 | } | |
3657 | else{ | |
3658 | new(array1[it]) AliTRDcluster(dummy); | |
3659 | } | |
4f1c04d3 | 3660 | } |
0c349049 | 3661 | |
7ad19338 | 3662 | TGraph graph0(t1-t0,x,dy0); |
3663 | TGraph graph1(t1-t0,x,dyb); | |
3664 | TGraph graphy(t1-t0,x,yt); | |
3665 | TGraph graphz(t1-t0,x,zt); | |
4551ea7c | 3666 | |
3a039a31 | 3667 | if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { |
4551ea7c | 3668 | cstream << "tracklet" |
3669 | << "track.=" << track // Track parameters | |
3670 | << "tany=" << tany // Tangent of the local track angle | |
3671 | << "xmean=" << xmean // Xmean - reference x of tracklet | |
3672 | << "tilt=" << h01 // Tilt angle | |
3673 | << "nall=" << nall // Number of foundable clusters | |
3674 | << "nfound=" << nfound // Number of found clusters | |
3675 | << "clfound=" << clfound // Total number of found clusters in road | |
3676 | << "mpads=" << mpads // Mean number of pads per cluster | |
053767a4 | 3677 | << "layer=" << layer // Layer number |
4551ea7c | 3678 | << "detector=" << detector // Detector number |
3679 | << "road=" << road // The width of the used road | |
3680 | << "graph0.=" << &graph0 // x - y = dy for closest cluster | |
3681 | << "graph1.=" << &graph1 // x - y = dy for second closest cluster | |
3682 | << "graphy.=" << &graphy // y position of the track | |
3683 | << "graphz.=" << &graphz // z position of the track | |
3684 | //<< "fCl.=" << &array0 // closest cluster | |
3685 | //<< "fCl2.=" << &array1 // second closest cluster | |
3686 | << "maxpos=" << maxpos // Maximal charge postion | |
3687 | << "maxcharge=" << maxcharge // Maximal charge | |
3688 | << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4 | |
3689 | << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4 | |
3690 | << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5 | |
3691 | << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5 | |
3692 | << "bestiter=" << bestiter // Best iteration number | |
3693 | << "tracklet.=" << &tracklet // Corrspond to the best iteration | |
3694 | << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration | |
3695 | << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration | |
3696 | << "sigmas0=" << sigmas[0] // Residuals sigma | |
3697 | << "sigmasb=" << sigmas[bestiter] // Residulas sigma | |
3698 | << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration | |
3699 | << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration | |
3700 | << "ngoodb=" << ngood[bestiter] // in best iteration | |
3701 | << "nbadb=" << nbad[bestiter] // in best iteration | |
3702 | << "changes0=" << changes[0] // Changes of pardrows in iteration number 0 | |
3703 | << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration | |
3704 | << "moffset0=" << moffset[0] // Offset fixing angle in iter=0 | |
3705 | << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0 | |
3706 | << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best | |
3707 | << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best | |
3708 | << "mean0=" << mean[0] // Mean dy in iter=0; | |
3709 | << "smean0=" << smean[0] // Sigma of mean dy in iter=0 | |
3710 | << "meanb=" << mean[bestiter] // Mean dy in iter=best | |
3711 | << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best | |
3712 | << "angle0=" << angle[0] // Angle deviation in the iteration number 0 | |
3713 | << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0 | |
3714 | << "angleb=" << angle[bestiter] // Angle deviation in the best iteration | |
3715 | << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration | |
3716 | << "expectederr=" << expectederr // Expected error of cluster position | |
3717 | << "\n"; | |
3718 | } | |
3719 | ||
4f1c04d3 | 3720 | return nfound; |
4f1c04d3 | 3721 | |
75bd7f81 | 3722 | } |
4f1c04d3 | 3723 | |
75bd7f81 | 3724 | //_____________________________________________________________________________ |
3725 | Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist | |
3726 | , Int_t *outlist, Bool_t down) | |
69b55c55 | 3727 | { |
3728 | // | |
4551ea7c | 3729 | // Sort eleements according occurancy |
3730 | // The size of output array has is 2*n | |
69b55c55 | 3731 | // |
75bd7f81 | 3732 | |
ed15ef4f | 3733 | if (n <= 0) { |
3734 | return 0; | |
3735 | } | |
5a18ca23 | 3736 | |
ed15ef4f | 3737 | Int_t *sindexS = new Int_t[n]; // Temporary array for sorting |
3738 | Int_t *sindexF = new Int_t[2*n]; | |
3739 | for (Int_t i = 0; i < n; i++) { | |
3740 | sindexF[i] = 0; | |
3741 | } | |
4551ea7c | 3742 | |
3743 | TMath::Sort(n,inlist,sindexS,down); | |
3744 | ||
3745 | Int_t last = inlist[sindexS[0]]; | |
3746 | Int_t val = last; | |
3747 | sindexF[0] = 1; | |
3748 | sindexF[0+n] = last; | |
3749 | Int_t countPos = 0; | |
3750 | ||
3751 | // Find frequency | |
3752 | for (Int_t i = 1; i < n; i++) { | |
69b55c55 | 3753 | val = inlist[sindexS[i]]; |
4551ea7c | 3754 | if (last == val) { |
3755 | sindexF[countPos]++; | |
3756 | } | |
3757 | else { | |
69b55c55 | 3758 | countPos++; |
3759 | sindexF[countPos+n] = val; | |
3760 | sindexF[countPos]++; | |
4551ea7c | 3761 | last = val; |
69b55c55 | 3762 | } |
3763 | } | |
4551ea7c | 3764 | if (last == val) { |
3765 | countPos++; | |
3766 | } | |
3767 | ||
3768 | // Sort according frequency | |
3769 | TMath::Sort(countPos,sindexF,sindexS,kTRUE); | |
3770 | ||
3771 | for (Int_t i = 0; i < countPos; i++) { | |
69b55c55 | 3772 | outlist[2*i ] = sindexF[sindexS[i]+n]; |
3773 | outlist[2*i+1] = sindexF[sindexS[i]]; | |
3774 | } | |
4551ea7c | 3775 | |
69b55c55 | 3776 | delete [] sindexS; |
3777 | delete [] sindexF; | |
3778 | ||
3779 | return countPos; | |
75bd7f81 | 3780 | |
69b55c55 | 3781 | } |
3782 | ||
75bd7f81 | 3783 | //_____________________________________________________________________________ |
4551ea7c | 3784 | AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params) |
69b55c55 | 3785 | { |
3786 | // | |
e4f2f73d | 3787 | // Build a TRD track out of tracklet candidates |
3788 | // | |
3789 | // Parameters : | |
3790 | // seeds : array of tracklets | |
3791 | // params : track parameters (see MakeSeeds() function body for a detailed description) | |
3792 | // | |
3793 | // Output : | |
3794 | // The TRD track. | |
3795 | // | |
3796 | // Detailed description | |
3797 | // | |
3798 | // To be discussed with Marian !! | |
69b55c55 | 3799 | // |
4551ea7c | 3800 | |
e4f2f73d | 3801 | AliTRDcalibDB *cal = AliTRDcalibDB::Instance(); |
3802 | Int_t nTimeBins = cal->GetNumberOfTimeBins(); | |
3803 | ||
3804 | ||
4551ea7c | 3805 | Double_t alpha = AliTRDgeometry::GetAlpha(); |
3806 | Double_t shift = AliTRDgeometry::GetAlpha()/2.0; | |
69b55c55 | 3807 | Double_t c[15]; |
4551ea7c | 3808 | |
3809 | c[ 0] = 0.2; | |
3810 | c[ 1] = 0.0; c[ 2] = 2.0; | |
3811 | c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02; | |
3812 | c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1; | |
3813 | c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01; | |
3814 | ||
3815 | Int_t index = 0; | |
3816 | AliTRDcluster *cl = 0; | |
3817 | ||
3818 | for (Int_t ilayer = 0; ilayer < 6; ilayer++) { | |
e4f2f73d | 3819 | |
3820 | if (seeds[ilayer].IsOK()) { | |
3821 | for (Int_t itime = nTimeBins-1; itime > 0; itime--) { | |
3822 | if (seeds[ilayer].GetIndexes(itime) > 0) { | |
3823 | index = seeds[ilayer].GetIndexes(itime); | |
3824 | cl = seeds[ilayer].GetClusters(itime); | |
3825 | //printf("l[%d] index[%d] tb[%d] cptr[%p]\n", ilayer, index, itime, cl); | |
3826 | break; | |
3827 | } | |
69b55c55 | 3828 | } |
3829 | } | |
4551ea7c | 3830 | if (index > 0) { |
3831 | break; | |
3832 | } | |
69b55c55 | 3833 | } |
4551ea7c | 3834 | if (cl == 0) { |
3835 | return 0; | |
3836 | } | |
3837 | ||
3838 | AliTRDtrack *track = new AliTRDtrack(cl | |
3839 | ,index | |
3840 | ,¶ms[1] | |
3841 | ,c | |
3842 | ,params[0] | |
3843 | ,params[6]*alpha+shift); | |
43bfc8af | 3844 | // SetCluster(cl, 0); // A. Bercuci |
3845 | track->PropagateTo(params[0]-5.0); | |
69b55c55 | 3846 | track->ResetCovariance(1); |
4551ea7c | 3847 | |
3848 | Int_t rc = FollowBackProlongation(*track); | |
3849 | if (rc < 30) { | |
69b55c55 | 3850 | delete track; |
4551ea7c | 3851 | track = 0; |
3852 | } | |
3853 | else { | |
69b55c55 | 3854 | track->CookdEdx(); |
44dbae42 | 3855 | track->CookdEdxTimBin(-1); |
4551ea7c | 3856 | CookLabel(track,0.9); |
69b55c55 | 3857 | } |
69b55c55 | 3858 | |
75bd7f81 | 3859 | return track; |
7e448bcc | 3860 | |
0c349049 | 3861 | } |
69b55c55 | 3862 | |
0c349049 | 3863 | //_____________________________________________________________________________ |
3864 | void AliTRDtracker::InitLogHists() | |
3865 | { | |
3866 | // | |
3867 | // Create the log histograms | |
3868 | // | |
7e448bcc | 3869 | |
0c349049 | 3870 | fHBackfit = new TH1D("logTRD_backfit" ,"" |
3871 | , 40,-0.5, 39.5); | |
3872 | fHRefit = new TH1D("logTRD_refit" ,"" | |
3873 | , 40,-0.5, 39.5); | |
3874 | fHClSearch = new TH1D("logTRD_clSearch","" | |
3875 | , 60,-0.5, 59.5); | |
7e448bcc | 3876 | |
0c349049 | 3877 | fHX = new TH1D("logTRD_X" ,";x (cm)" |
3878 | , 200, 50, 400); | |
3879 | fHNCl = new TH1D("logTRD_ncl" ,"" | |
3880 | , 40,-0.5, 39.5); | |
3881 | fHNClTrack = new TH1D("logTRD_nclTrack","" | |
3882 | , 180,-0.5,179.5); | |
7e448bcc | 3883 | |
0c349049 | 3884 | fHMinYPos = new TH1D("logTRD_minYPos" ,";#delta Y (cm)" |
3885 | , 400, -6, 6); | |
3886 | fHMinYNeg = new TH1D("logTRD_minYNeg" ,";#delta Y (cm)" | |
3887 | , 400, -6, 6); | |
3888 | fHMinZ = new TH1D("logTRD_minZ" ,";#delta Z (cm)" | |
3889 | , 400, -20, 20); | |
3890 | fHMinD = new TH2D("logTRD_minD" ,";#delta Y (cm);#delta Z (cm)" | |
3891 | , 100, -6, 6 | |
3892 | , 100, -50, 50); | |
7e448bcc | 3893 | |
0c349049 | 3894 | fHDeltaX = new TH1D("logTRD_deltaX" ,";#delta X (cm)" |
3895 | , 100, -5, 5); | |
3896 | fHXCl = new TH1D("logTRD_xCl" ,";cluster x position (cm)" | |
3897 | ,1000, 280, 380); | |
7e448bcc | 3898 | |
0c349049 | 3899 | const Char_t *nameFindCl[4] = { "logTRD_clY" |
3900 | , "logTRD_clZ" | |
3901 | , "logTRD_clB" | |
3902 | , "logTRD_clG" }; | |
7e448bcc | 3903 | |
0c349049 | 3904 | for (Int_t i = 0; i < 4; i++) { |
3905 | fHFindCl[i] = new TH1D(nameFindCl[i],"",30,-0.5,29.5); | |
7e448bcc | 3906 | } |
7e448bcc | 3907 | |
0c349049 | 3908 | } |
7e448bcc | 3909 | |
0c349049 | 3910 | //_____________________________________________________________________________ |
3911 | void AliTRDtracker::SaveLogHists() | |
3912 | { | |
3913 | // | |
3914 | // Save the log histograms in AliESDs.root | |
3915 | // | |
7e448bcc | 3916 | |
0c349049 | 3917 | TDirectory *sav = gDirectory; |
3918 | TFile *logFile = 0; | |
7e448bcc | 3919 | |
3920 | TSeqCollection *col = gROOT->GetListOfFiles(); | |
0c349049 | 3921 | Int_t nn = col->GetEntries(); |
3922 | for (Int_t i = 0; i < nn; i++) { | |
3923 | logFile = (TFile *) col->At(i); | |
3924 | if (strstr(logFile->GetName(),"AliESDs.root")) { | |
3925 | break; | |
3926 | } | |
7e448bcc | 3927 | } |
3928 | ||
3929 | logFile->cd(); | |
7e448bcc | 3930 | |
0c349049 | 3931 | fHBackfit->Write(fHBackfit->GetName(),TObject::kOverwrite); |
3932 | fHRefit->Write(fHRefit->GetName(),TObject::kOverwrite); | |
3933 | fHClSearch->Write(fHClSearch->GetName(),TObject::kOverwrite); | |
3934 | fHX->Write(fHX->GetName(),TObject::kOverwrite); | |
3935 | fHNCl->Write(fHNCl->GetName(),TObject::kOverwrite); | |
3936 | fHNClTrack->Write(fHNClTrack->GetName(),TObject::kOverwrite); | |
3937 | ||
3938 | fHMinYPos->Write(fHMinYPos->GetName(),TObject::kOverwrite); | |
3939 | fHMinYNeg->Write(fHMinYNeg->GetName(),TObject::kOverwrite); | |
3940 | fHMinD->Write(fHMinD->GetName(),TObject::kOverwrite); | |
3941 | fHMinZ->Write(fHMinZ->GetName(),TObject::kOverwrite); | |
3942 | ||
3943 | fHDeltaX->Write(fHDeltaX->GetName(),TObject::kOverwrite); | |
3944 | fHXCl->Write(fHXCl->GetName(),TObject::kOverwrite); | |
7e448bcc | 3945 | |
0c349049 | 3946 | for (Int_t i = 0; i < 4; i++) { |
3947 | fHFindCl[i]->Write(fHFindCl[i]->GetName(),TObject::kOverwrite); | |
3948 | } | |
7e448bcc | 3949 | |
3950 | logFile->Flush(); | |
3951 | ||
3952 | sav->cd(); | |
7e448bcc | 3953 | |
0c349049 | 3954 | } |