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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" |
082a2283 | 53 | #include "AliTRDCalibraFillHisto.h" |
54 | ||
7e448bcc | 55 | ClassImp(AliTRDtracker) |
46d29e70 | 56 | |
b08a2e7e | 57 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; // |
58 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; // | |
59 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.0; // | |
0c349049 | 60 | const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle |
7e448bcc | 61 | const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation |
7ad19338 | 62 | |
75bd7f81 | 63 | //_____________________________________________________________________________ |
4551ea7c | 64 | AliTRDtracker::AliTRDtracker() |
4e009ce4 | 65 | :AliTracker() |
a4cf6278 | 66 | ,fGeom(0) |
67 | ,fNclusters(0) | |
68 | ,fClusters(0) | |
69 | ,fNseeds(0) | |
70 | ,fSeeds(0) | |
71 | ,fNtracks(0) | |
72 | ,fTracks(0) | |
73 | ,fTimeBinsPerPlane(0) | |
74 | ,fAddTRDseeds(kFALSE) | |
75 | ,fNoTilt(kFALSE) | |
4e009ce4 | 76 | ,fHBackfit(0x0) |
77 | ,fHClSearch(0x0) | |
78 | ,fHRefit(0x0) | |
79 | ,fHX(0x0) | |
80 | ,fHNCl(0x0) | |
81 | ,fHNClTrack(0x0) | |
82 | ,fHMinYPos(0x0) | |
83 | ,fHMinYNeg(0x0) | |
84 | ,fHMinZ(0x0) | |
85 | ,fHMinD(0x0) | |
86 | ,fHDeltaX(0x0) | |
87 | ,fHXCl(0x0) | |
4e009ce4 | 88 | ,fDebugStreamer(0) |
89f05372 | 89 | { |
75bd7f81 | 90 | // |
b7a0917f | 91 | // Default constructor |
75bd7f81 | 92 | // |
b7a0917f | 93 | |
4551ea7c | 94 | for (Int_t i = 0; i < kTrackingSectors; i++) { |
95 | fTrSec[i] = 0; | |
96 | } | |
75bd7f81 | 97 | |
7e448bcc | 98 | InitLogHists(); |
4e009ce4 | 99 | |
89f05372 | 100 | } |
75bd7f81 | 101 | |
102 | //_____________________________________________________________________________ | |
6c94f330 | 103 | AliTRDtracker::AliTRDtracker(const AliTRDtracker &t) |
104 | :AliTracker(t) | |
a4cf6278 | 105 | ,fGeom(0) |
106 | ,fNclusters(0) | |
107 | ,fClusters(0) | |
108 | ,fNseeds(0) | |
109 | ,fSeeds(0) | |
110 | ,fNtracks(0) | |
111 | ,fTracks(0) | |
112 | ,fTimeBinsPerPlane(0) | |
113 | ,fAddTRDseeds(kFALSE) | |
114 | ,fNoTilt(kFALSE) | |
4e009ce4 | 115 | ,fHBackfit(0x0) |
116 | ,fHClSearch(0x0) | |
117 | ,fHRefit(0x0) | |
118 | ,fHX(0x0) | |
119 | ,fHNCl(0x0) | |
120 | ,fHNClTrack(0x0) | |
121 | ,fHMinYPos(0x0) | |
122 | ,fHMinYNeg(0x0) | |
123 | ,fHMinZ(0x0) | |
124 | ,fHMinD(0x0) | |
125 | ,fHDeltaX(0x0) | |
126 | ,fHXCl(0x0) | |
ad670fba | 127 | ,fDebugStreamer(0) |
6c94f330 | 128 | { |
ad670fba | 129 | // |
130 | // Copy constructor | |
131 | // | |
4e009ce4 | 132 | |
ad670fba | 133 | } |
134 | ||
135 | //_____________________________________________________________________________ | |
eccb46a3 | 136 | AliTRDtracker::AliTRDtracker(const TFile */*geomfile*/) |
ad670fba | 137 | :AliTracker() |
a4cf6278 | 138 | ,fGeom(0) |
139 | ,fNclusters(0) | |
140 | ,fClusters(new TObjArray(2000)) | |
141 | ,fNseeds(0) | |
142 | ,fSeeds(new TObjArray(2000)) | |
143 | ,fNtracks(0) | |
144 | ,fTracks(new TObjArray(1000)) | |
145 | ,fTimeBinsPerPlane(0) | |
146 | ,fAddTRDseeds(kFALSE) | |
147 | ,fNoTilt(kFALSE) | |
4e009ce4 | 148 | ,fHBackfit(0x0) |
149 | ,fHClSearch(0x0) | |
150 | ,fHRefit(0x0) | |
151 | ,fHX(0x0) | |
152 | ,fHNCl(0x0) | |
153 | ,fHNClTrack(0x0) | |
154 | ,fHMinYPos(0x0) | |
155 | ,fHMinYNeg(0x0) | |
156 | ,fHMinZ(0x0) | |
157 | ,fHMinD(0x0) | |
158 | ,fHDeltaX(0x0) | |
159 | ,fHXCl(0x0) | |
ad670fba | 160 | ,fDebugStreamer(0) |
46d29e70 | 161 | { |
5443e65e | 162 | // |
163 | // Main constructor | |
164 | // | |
b8dc2353 | 165 | |
4551ea7c | 166 | TDirectory *savedir = gDirectory; |
46d29e70 | 167 | |
f162af62 | 168 | fGeom = new AliTRDgeometry(); |
c630aafd | 169 | |
4551ea7c | 170 | for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
439c63c8 | 171 | Int_t trS = geomS; |
4551ea7c | 172 | fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS); |
5443e65e | 173 | } |
4551ea7c | 174 | |
f162af62 | 175 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); |
7ad19338 | 176 | Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); |
4551ea7c | 177 | if (tiltAngle < 0.1) { |
b8dc2353 | 178 | fNoTilt = kTRUE; |
179 | } | |
180 | ||
fc88348b | 181 | if (!AliTRDcalibDB::Instance()) { |
182 | AliFatal("Could not get calibration object"); | |
183 | } | |
184 | fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); | |
46d29e70 | 185 | |
4551ea7c | 186 | fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); |
0a29d0f1 | 187 | |
9c9d2487 | 188 | savedir->cd(); |
7e448bcc | 189 | |
190 | InitLogHists(); | |
75bd7f81 | 191 | |
5443e65e | 192 | } |
46d29e70 | 193 | |
75bd7f81 | 194 | //_____________________________________________________________________________ |
5443e65e | 195 | AliTRDtracker::~AliTRDtracker() |
46d29e70 | 196 | { |
029cd327 | 197 | // |
198 | // Destructor of AliTRDtracker | |
199 | // | |
200 | ||
89f05372 | 201 | if (fClusters) { |
202 | fClusters->Delete(); | |
203 | delete fClusters; | |
204 | } | |
4551ea7c | 205 | |
89f05372 | 206 | if (fTracks) { |
207 | fTracks->Delete(); | |
208 | delete fTracks; | |
209 | } | |
4551ea7c | 210 | |
89f05372 | 211 | if (fSeeds) { |
212 | fSeeds->Delete(); | |
213 | delete fSeeds; | |
214 | } | |
4551ea7c | 215 | |
f162af62 | 216 | if (fGeom) { |
217 | delete fGeom; | |
218 | } | |
0a29d0f1 | 219 | |
4551ea7c | 220 | for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
029cd327 | 221 | delete fTrSec[geomS]; |
5443e65e | 222 | } |
4551ea7c | 223 | |
7ad19338 | 224 | if (fDebugStreamer) { |
7ad19338 | 225 | delete fDebugStreamer; |
226 | } | |
9c9d2487 | 227 | |
75bd7f81 | 228 | } |
59393e34 | 229 | |
75bd7f81 | 230 | //_____________________________________________________________________________ |
231 | Int_t AliTRDtracker::LocalToGlobalID(Int_t lid) | |
232 | { | |
59393e34 | 233 | // |
75bd7f81 | 234 | // Transform internal TRD ID to global detector ID |
59393e34 | 235 | // |
75bd7f81 | 236 | |
4551ea7c | 237 | Int_t isector = fGeom->GetSector(lid); |
238 | Int_t ichamber = fGeom->GetChamber(lid); | |
239 | Int_t iplan = fGeom->GetPlane(lid); | |
240 | ||
ae079791 | 241 | AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; |
59393e34 | 242 | switch (iplan) { |
243 | case 0: | |
ae079791 | 244 | iLayer = AliGeomManager::kTRD1; |
59393e34 | 245 | break; |
246 | case 1: | |
ae079791 | 247 | iLayer = AliGeomManager::kTRD2; |
59393e34 | 248 | break; |
249 | case 2: | |
ae079791 | 250 | iLayer = AliGeomManager::kTRD3; |
59393e34 | 251 | break; |
252 | case 3: | |
ae079791 | 253 | iLayer = AliGeomManager::kTRD4; |
59393e34 | 254 | break; |
255 | case 4: | |
ae079791 | 256 | iLayer = AliGeomManager::kTRD5; |
59393e34 | 257 | break; |
258 | case 5: | |
ae079791 | 259 | iLayer = AliGeomManager::kTRD6; |
59393e34 | 260 | break; |
261 | }; | |
4551ea7c | 262 | |
263 | Int_t modId = isector * fGeom->Ncham() + ichamber; | |
ae079791 | 264 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); |
75bd7f81 | 265 | |
59393e34 | 266 | return volid; |
75bd7f81 | 267 | |
59393e34 | 268 | } |
269 | ||
75bd7f81 | 270 | //_____________________________________________________________________________ |
271 | Int_t AliTRDtracker::GlobalToLocalID(Int_t gid) | |
272 | { | |
59393e34 | 273 | // |
75bd7f81 | 274 | // Transform global detector ID to local detector ID |
59393e34 | 275 | // |
75bd7f81 | 276 | |
4551ea7c | 277 | Int_t modId = 0; |
ae079791 | 278 | AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId); |
4551ea7c | 279 | |
280 | Int_t isector = modId / fGeom->Ncham(); | |
281 | Int_t ichamber = modId % fGeom->Ncham(); | |
282 | Int_t iLayer = -1; | |
283 | ||
59393e34 | 284 | switch (layerId) { |
ae079791 | 285 | case AliGeomManager::kTRD1: |
6c94f330 | 286 | iLayer = 0; |
59393e34 | 287 | break; |
ae079791 | 288 | case AliGeomManager::kTRD2: |
6c94f330 | 289 | iLayer = 1; |
59393e34 | 290 | break; |
ae079791 | 291 | case AliGeomManager::kTRD3: |
6c94f330 | 292 | iLayer = 2; |
59393e34 | 293 | break; |
ae079791 | 294 | case AliGeomManager::kTRD4: |
6c94f330 | 295 | iLayer = 3; |
59393e34 | 296 | break; |
ae079791 | 297 | case AliGeomManager::kTRD5: |
6c94f330 | 298 | iLayer = 4; |
59393e34 | 299 | break; |
ae079791 | 300 | case AliGeomManager::kTRD6: |
6c94f330 | 301 | iLayer = 5; |
59393e34 | 302 | break; |
303 | default: | |
6c94f330 | 304 | iLayer =-1; |
59393e34 | 305 | } |
4551ea7c | 306 | |
307 | if (iLayer < 0) { | |
308 | return -1; | |
309 | } | |
310 | ||
59393e34 | 311 | Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector); |
75bd7f81 | 312 | |
59393e34 | 313 | return lid; |
59393e34 | 314 | |
75bd7f81 | 315 | } |
59393e34 | 316 | |
75bd7f81 | 317 | //_____________________________________________________________________________ |
318 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) | |
319 | { | |
9c9d2487 | 320 | // |
321 | // Rotates the track when necessary | |
322 | // | |
323 | ||
324 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
4551ea7c | 325 | Double_t y = track->GetY(); |
326 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
9c9d2487 | 327 | |
4551ea7c | 328 | if (y > ymax) { |
4551ea7c | 329 | if (!track->Rotate( alpha)) { |
330 | return kFALSE; | |
331 | } | |
332 | } | |
333 | else if (y < -ymax) { | |
4551ea7c | 334 | if (!track->Rotate(-alpha)) { |
335 | return kFALSE; | |
336 | } | |
9c9d2487 | 337 | } |
338 | ||
339 | return kTRUE; | |
9c9d2487 | 340 | |
75bd7f81 | 341 | } |
46e2d86c | 342 | |
75bd7f81 | 343 | //_____________________________________________________________________________ |
344 | AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane | |
345 | , Int_t timebin, UInt_t &index) | |
346 | { | |
46e2d86c | 347 | // |
75bd7f81 | 348 | // Try to find cluster in the backup list |
46e2d86c | 349 | // |
75bd7f81 | 350 | |
4551ea7c | 351 | AliTRDcluster *cl =0; |
6c94f330 | 352 | Int_t *indexes = track->GetBackupIndexes(); |
4551ea7c | 353 | |
354 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { | |
355 | if (indexes[i] == 0) { | |
356 | break; | |
357 | } | |
358 | AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); | |
359 | if (!cli) { | |
360 | break; | |
361 | } | |
362 | if (cli->GetLocalTimeBin() != timebin) { | |
363 | continue; | |
364 | } | |
46e2d86c | 365 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
4551ea7c | 366 | if (iplane == plane) { |
367 | cl = cli; | |
7ad19338 | 368 | index = indexes[i]; |
46e2d86c | 369 | break; |
370 | } | |
371 | } | |
75bd7f81 | 372 | |
46e2d86c | 373 | return cl; |
46e2d86c | 374 | |
75bd7f81 | 375 | } |
3c625a9b | 376 | |
75bd7f81 | 377 | //_____________________________________________________________________________ |
4551ea7c | 378 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track) |
75bd7f81 | 379 | { |
3c625a9b | 380 | // |
75bd7f81 | 381 | // Return last updated plane |
382 | // | |
383 | ||
4551ea7c | 384 | Int_t lastplane = 0; |
385 | Int_t *indexes = track->GetBackupIndexes(); | |
386 | ||
387 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { | |
388 | AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); | |
389 | if (!cli) { | |
390 | break; | |
391 | } | |
3c625a9b | 392 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
4551ea7c | 393 | if (iplane > lastplane) { |
3c625a9b | 394 | lastplane = iplane; |
395 | } | |
396 | } | |
75bd7f81 | 397 | |
3c625a9b | 398 | return lastplane; |
75bd7f81 | 399 | |
3c625a9b | 400 | } |
5443e65e | 401 | |
c630aafd | 402 | //_____________________________________________________________________________ |
af885e0f | 403 | Int_t AliTRDtracker::PropagateBack(AliESDEvent *event) |
75bd7f81 | 404 | { |
c630aafd | 405 | // |
406 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
407 | // backpropagated by the TPC tracker. Each seed is first propagated | |
408 | // to the TRD, and then its prolongation is searched in the TRD. | |
409 | // If sufficiently long continuation of the track is found in the TRD | |
410 | // the track is updated, otherwise it's stored as originaly defined | |
411 | // by the TPC tracker. | |
412 | // | |
413 | ||
e4f2f73d | 414 | Int_t found = 0; // number of tracks found |
415 | Float_t foundMin = 20.0; | |
4f1c04d3 | 416 | |
e4f2f73d | 417 | Int_t nSeed = event->GetNumberOfTracks(); |
418 | if(!nSeed){ | |
419 | // run stand alone tracking | |
420 | if (AliTRDReconstructor::SeedingOn()) Clusters2Tracks(event); | |
421 | return 0; | |
4f1c04d3 | 422 | } |
e4f2f73d | 423 | |
424 | Float_t *quality = new Float_t[nSeed]; | |
425 | Int_t *index = new Int_t[nSeed]; | |
426 | for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { | |
427 | AliESDtrack *seed = event->GetTrack(iSeed); | |
428 | Double_t covariance[15]; | |
429 | seed->GetExternalCovariance(covariance); | |
430 | quality[iSeed] = covariance[0] + covariance[2]; | |
7ad19338 | 431 | } |
e4f2f73d | 432 | // Sort tracks according to covariance of local Y and Z |
433 | TMath::Sort(nSeed,quality,index,kFALSE); | |
7e448bcc | 434 | |
e4f2f73d | 435 | // Backpropagate all seeds |
436 | for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { | |
7e448bcc | 437 | |
e4f2f73d | 438 | // Get the seeds in sorted sequence |
439 | AliESDtrack *seed = event->GetTrack(index[iSeed]); | |
440 | fHBackfit->Fill(0); // All seeds | |
441 | ||
442 | // Check the seed status | |
443 | ULong_t status = seed->GetStatus(); | |
444 | if ((status & AliESDtrack::kTPCout) == 0) { | |
445 | fHBackfit->Fill(1); // TPC outer edge reached | |
446 | continue; | |
447 | } | |
448 | if ((status & AliESDtrack::kTRDout) != 0) { | |
449 | fHBackfit->Fill(2); // TRD outer edge reached (does this happen ?) | |
450 | continue; | |
451 | } | |
452 | ||
453 | // Do the back prolongation | |
454 | Int_t lbl = seed->GetLabel(); | |
455 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
456 | track->SetSeedLabel(lbl); | |
457 | seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup | |
458 | fNseeds++; | |
459 | Float_t p4 = track->GetC(); | |
460 | Int_t expectedClr = FollowBackProlongation(*track); | |
461 | fHBackfit->Fill(3); // Back prolongation done | |
462 | fHX->Fill(track->GetX()); | |
463 | ||
464 | if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) || | |
465 | (track->Pt() > 0.8)) { | |
466 | ||
467 | fHBackfit->Fill(4); | |
468 | ||
469 | // | |
470 | // Make backup for back propagation | |
471 | // | |
472 | ||
473 | Int_t foundClr = track->GetNumberOfClusters(); | |
474 | if (foundClr >= foundMin) { | |
475 | track->CookdEdx(); | |
476 | track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07 | |
477 | CookLabel(track,1 - fgkLabelFraction); | |
478 | if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack()); | |
479 | ||
480 | ||
481 | // Sign only gold tracks | |
482 | if (track->GetChi2() / track->GetNumberOfClusters() < 4) { | |
483 | if ((seed->GetKinkIndex(0) == 0) && | |
484 | (track->Pt() < 1.5)) { | |
485 | UseClusters(track); | |
486 | } | |
487 | } | |
488 | Bool_t isGold = kFALSE; | |
489 | ||
490 | // Full gold track | |
491 | if (track->GetChi2() / track->GetNumberOfClusters() < 5) { | |
492 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
493 | if (track->GetBackupTrack()) { | |
494 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
495 | } | |
496 | isGold = kTRUE; | |
497 | //fHBackfit->Fill() | |
498 | } | |
499 | ||
500 | // Almost gold track | |
501 | if ((!isGold) && (track->GetNCross() == 0) && | |
502 | (track->GetChi2() / track->GetNumberOfClusters() < 7)) { | |
503 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
504 | if (track->GetBackupTrack()) { | |
505 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
506 | } | |
507 | isGold = kTRUE; | |
508 | } | |
509 | ||
510 | if ((!isGold) && (track->GetBackupTrack())) { | |
511 | if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) && ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) { | |
512 | seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); | |
513 | isGold = kTRUE; | |
514 | } | |
515 | } | |
516 | ||
517 | if ((track->StatusForTOF() > 0) && (track->GetNCross() == 0) && (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) { | |
518 | //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
519 | } | |
520 | } | |
521 | } | |
522 | /**/ | |
523 | ||
524 | /**/ | |
525 | // Debug part of tracking | |
526 | TTreeSRedirector &cstream = *fDebugStreamer; | |
527 | 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. | |
528 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
529 | if (track->GetBackupTrack()) { | |
530 | cstream << "Tracks" | |
531 | << "EventNrInFile=" << eventNrInFile | |
532 | << "ESD.=" << seed | |
533 | << "trd.=" << track | |
534 | << "trdback.=" << track->GetBackupTrack() | |
535 | << "\n"; | |
536 | } | |
537 | else { | |
538 | cstream << "Tracks" | |
539 | << "EventNrInFile=" << eventNrInFile | |
540 | << "ESD.=" << seed | |
541 | << "trd.=" << track | |
542 | << "trdback.=" << track | |
543 | << "\n"; | |
544 | } | |
545 | } | |
546 | /**/ | |
547 | ||
548 | // Propagation to the TOF (I.Belikov) | |
549 | if (track->GetStop() == kFALSE) { | |
550 | fHBackfit->Fill(5); | |
551 | ||
552 | Double_t xtof = 371.0; | |
553 | Double_t xTOF0 = 370.0; | |
554 | ||
555 | Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); | |
556 | if (TMath::Abs(c2) >= 0.99) { | |
557 | fHBackfit->Fill(6); | |
558 | delete track; | |
559 | continue; | |
560 | } | |
561 | ||
562 | PropagateToX(*track,xTOF0,fgkMaxStep); | |
563 | ||
564 | // Energy losses taken to the account - check one more time | |
565 | c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); | |
566 | if (TMath::Abs(c2) >= 0.99) { | |
567 | fHBackfit->Fill(7); | |
568 | delete track; | |
569 | continue; | |
570 | } | |
571 | ||
572 | //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) { | |
573 | // fHBackfit->Fill(7); | |
574 | //delete track; | |
575 | // continue; | |
576 | //} | |
577 | ||
578 | Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha()); | |
579 | Double_t y; | |
580 | track->GetYAt(xtof,GetBz(),y); | |
581 | if (y > ymax) { | |
582 | if (!track->Rotate( AliTRDgeometry::GetAlpha())) { | |
583 | fHBackfit->Fill(8); | |
584 | delete track; | |
585 | continue; | |
586 | } | |
587 | } | |
588 | else if (y < -ymax) { | |
589 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { | |
590 | fHBackfit->Fill(9); | |
591 | delete track; | |
592 | continue; | |
593 | } | |
594 | } | |
595 | ||
596 | if (track->PropagateTo(xtof)) { | |
597 | seed->UpdateTrackParams(track,AliESDtrack::kTRDout); | |
598 | fHBackfit->Fill(10); | |
599 | ||
216b200f | 600 | seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); |
6984f7c1 | 601 | for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { |
602 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { | |
603 | seed->SetTRDslice(track->GetPIDsignals(i,j),i,j); | |
e4f2f73d | 604 | } |
605 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
606 | } | |
607 | //seed->SetTRDtrack(new AliTRDtrack(*track)); | |
608 | if (track->GetNumberOfClusters() > foundMin) { | |
609 | fHBackfit->Fill(11); | |
610 | found++; | |
611 | } | |
612 | } | |
613 | } | |
614 | else { | |
615 | fHBackfit->Fill(12); | |
616 | ||
617 | if ((track->GetNumberOfClusters() > 15) && | |
618 | (track->GetNumberOfClusters() > 0.5*expectedClr)) { | |
619 | seed->UpdateTrackParams(track,AliESDtrack::kTRDout); | |
620 | fHBackfit->Fill(13); | |
621 | ||
622 | //seed->SetStatus(AliESDtrack::kTRDStop); | |
216b200f | 623 | |
624 | seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); | |
6984f7c1 | 625 | for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { |
626 | for (Int_t j = 0; j <AliTRDtrack::kNslice; j++) { | |
627 | seed->SetTRDslice(track->GetPIDsignals(i,j),i,j); | |
e4f2f73d | 628 | } |
629 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
630 | } | |
631 | //seed->SetTRDtrack(new AliTRDtrack(*track)); | |
632 | found++; | |
633 | } | |
634 | } | |
635 | ||
636 | seed->SetTRDQuality(track->StatusForTOF()); | |
637 | seed->SetTRDBudget(track->GetBudget(0)); | |
638 | ||
639 | fHBackfit->Fill(14); | |
640 | delete track; | |
4551ea7c | 641 | } |
7e448bcc | 642 | |
e4f2f73d | 643 | AliInfo(Form("Number of seeds: %d",fNseeds)); |
644 | AliInfo(Form("Number of back propagated TRD tracks: %d",found)); | |
645 | ||
646 | fSeeds->Clear(); | |
647 | fNseeds = 0; | |
648 | ||
649 | delete [] index; | |
650 | delete [] quality; | |
651 | ||
652 | SaveLogHists(); | |
7e448bcc | 653 | |
1e9bb598 | 654 | return 0; |
1e9bb598 | 655 | } |
656 | ||
657 | //_____________________________________________________________________________ | |
af885e0f | 658 | Int_t AliTRDtracker::RefitInward(AliESDEvent *event) |
1e9bb598 | 659 | { |
660 | // | |
661 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
662 | // at the outer part of the TRD. | |
663 | // The tracks are propagated to the innermost time bin | |
664 | // of the TRD and the ESD event is updated | |
665 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
666 | // | |
667 | ||
0c349049 | 668 | //Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
669 | //Float_t foundMin = fgkMinClustersInTrack * timeBins; | |
4551ea7c | 670 | Int_t nseed = 0; |
671 | Int_t found = 0; | |
44dbae42 | 672 | Int_t pidQ = 0; |
4551ea7c | 673 | //Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); |
4f1c04d3 | 674 | AliTRDtrack seed2; |
6c94f330 | 675 | |
bcb6fb78 | 676 | // Calibration fill 2D |
677 | AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); | |
678 | if (!calibra) { | |
679 | AliInfo("Could not get Calibra instance\n"); | |
680 | } | |
681 | ||
1e9bb598 | 682 | Int_t n = event->GetNumberOfTracks(); |
4551ea7c | 683 | for (Int_t i = 0; i < n; i++) { |
684 | ||
685 | AliESDtrack *seed = event->GetTrack(i); | |
686 | new (&seed2) AliTRDtrack(*seed); | |
7e448bcc | 687 | fHRefit->Fill(0); |
688 | ||
4551ea7c | 689 | if (seed2.GetX() < 270.0) { |
690 | seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update | |
7e448bcc | 691 | fHRefit->Fill(1); |
f4e9508c | 692 | continue; |
693 | } | |
694 | ||
4551ea7c | 695 | ULong_t status = seed->GetStatus(); |
696 | if ((status & AliESDtrack::kTRDout) == 0) { | |
7e448bcc | 697 | fHRefit->Fill(2); |
0dd7d129 | 698 | continue; |
699 | } | |
4551ea7c | 700 | if ((status & AliESDtrack::kTRDin) != 0) { |
7e448bcc | 701 | fHRefit->Fill(3); |
0dd7d129 | 702 | continue; |
703 | } | |
7e448bcc | 704 | |
6c94f330 | 705 | nseed++; |
7e448bcc | 706 | fHRefit->Fill(4); |
6c94f330 | 707 | |
4551ea7c | 708 | seed2.ResetCovariance(50.0); |
6c94f330 | 709 | |
4f1c04d3 | 710 | AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); |
4551ea7c | 711 | Int_t *indexes2 = seed2.GetIndexes(); |
7bce990c | 712 | for (Int_t l = 0; l < AliTRDtrack::kNplane;++l) { |
6984f7c1 | 713 | for (Int_t j = 0; j < AliTRDtrack::kNslice;j++) { |
7bce990c | 714 | pt->SetPIDsignals(seed2.GetPIDsignals(l,j),l,j); |
6d45eaef | 715 | } |
7bce990c | 716 | pt->SetPIDTimBin(seed2.GetPIDTimBin(l),l); |
7ad19338 | 717 | } |
eab5961e | 718 | |
4551ea7c | 719 | Int_t *indexes3 = pt->GetBackupIndexes(); |
7bce990c | 720 | for (Int_t l = 0; l < 200;++l) { |
721 | if (indexes2[l] == 0) { | |
4551ea7c | 722 | break; |
723 | } | |
7bce990c | 724 | indexes3[l] = indexes2[l]; |
4551ea7c | 725 | } |
726 | ||
43bfc8af | 727 | FollowProlongation(*pt); |
0c349049 | 728 | pt->CookdEdx(); |
729 | pt->CookdEdxTimBin(seed->GetID()); | |
7eccf2f3 | 730 | |
731 | //calculate PID methods | |
732 | pt->SetPIDMethod(AliTRDtrack::kLQ); | |
0c349049 | 733 | pt->CookPID(pidQ); |
7eccf2f3 | 734 | seed->SetTRDpid(pt->GetPID()); |
735 | seed->SetTRDpidQuality(pidQ); | |
736 | ||
737 | // update calibration | |
bcb6fb78 | 738 | if(calibra->GetHisto2d()) calibra->UpdateHistograms(pt); |
1e9bb598 | 739 | found++; |
33744e5d | 740 | |
4551ea7c | 741 | Double_t xTPC = 250.0; |
43bfc8af | 742 | if (PropagateToX(*pt,xTPC,fgkMaxStep)) { |
4551ea7c | 743 | seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit); |
7e448bcc | 744 | fHRefit->Fill(5); |
745 | ||
7bce990c | 746 | for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { |
6984f7c1 | 747 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { |
7bce990c | 748 | seed->SetTRDslice(pt->GetPIDsignals(l,j),l,j); |
7eccf2f3 | 749 | } |
7bce990c | 750 | seed->SetTRDTimBin(pt->GetPIDTimBin(l),l); |
7ad19338 | 751 | } |
7eccf2f3 | 752 | } else { |
4551ea7c | 753 | // If not prolongation to TPC - propagate without update |
7e448bcc | 754 | fHRefit->Fill(5); |
7bce990c | 755 | AliTRDtrack *seed2t = new AliTRDtrack(*seed); |
756 | seed2t->ResetCovariance(5.0); | |
757 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2t,seed2t->GetAlpha()); | |
758 | delete seed2t; | |
0c349049 | 759 | |
59393e34 | 760 | if (PropagateToX(*pt2,xTPC,fgkMaxStep)) { |
0c349049 | 761 | pt2->CookdEdx(); |
44dbae42 | 762 | pt2->CookdEdxTimBin(seed->GetID()); |
7eccf2f3 | 763 | seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit); |
764 | fHRefit->Fill(6); | |
7e448bcc | 765 | |
7bce990c | 766 | for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { |
6984f7c1 | 767 | for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { |
7bce990c | 768 | seed->SetTRDslice(pt2->GetPIDsignals(l,j),l,j); |
7eccf2f3 | 769 | } |
7bce990c | 770 | seed->SetTRDTimBin(pt2->GetPIDTimBin(l),l); |
7ad19338 | 771 | } |
eab5961e | 772 | } |
306e3dc1 | 773 | |
0c349049 | 774 | // Add TRD track to ESDfriendTrack - maybe this tracks are |
775 | // not useful for post-processing - TODO make decision | |
306e3dc1 | 776 | if (AliTRDReconstructor::StreamLevel() > 0) { |
777 | seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/)); | |
778 | } | |
7bed16a7 | 779 | delete pt2; |
0c349049 | 780 | |
4551ea7c | 781 | } |
782 | ||
306e3dc1 | 783 | // Add TRD track to ESDfriendTrack |
784 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
785 | seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/)); | |
786 | } | |
1e9bb598 | 787 | delete pt; |
4551ea7c | 788 | |
eab5961e | 789 | } |
1e9bb598 | 790 | |
33744e5d | 791 | AliInfo(Form("Number of loaded seeds: %d",nseed)); |
792 | AliInfo(Form("Number of found tracks from loaded seeds: %d",found)); | |
1e9bb598 | 793 | |
7e448bcc | 794 | SaveLogHists(); |
0c349049 | 795 | |
c630aafd | 796 | return 0; |
0c349049 | 797 | |
c630aafd | 798 | } |
799 | ||
75bd7f81 | 800 | //_____________________________________________________________________________ |
4551ea7c | 801 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t) |
8979685e | 802 | { |
0c349049 | 803 | // |
804 | // Starting from current position on track=t this function tries | |
805 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
806 | // if a close cluster is found. Returns the number of clusters | |
807 | // expected to be found in sensitive layers | |
808 | // GeoManager used to estimate mean density | |
809 | // | |
4551ea7c | 810 | |
0c349049 | 811 | Int_t sector; |
812 | Int_t lastplane = GetLastPlane(&t); | |
813 | Double_t xx0 = 0.0; | |
814 | Double_t xrho= 0.0; | |
815 | Int_t expectedNumberOfClusters = 0; | |
4551ea7c | 816 | |
0c349049 | 817 | for (Int_t iplane = lastplane; iplane >= 0; iplane--) { |
4551ea7c | 818 | |
0c349049 | 819 | Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); |
820 | Int_t rowlast = GetGlobalTimeBin(0,iplane,0); | |
4551ea7c | 821 | |
0c349049 | 822 | // Propagate track close to the plane if neccessary |
823 | Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX(); | |
824 | if (currentx < (-fgkMaxStep + t.GetX())) { | |
825 | // Propagate closer to chamber - safety space fgkMaxStep | |
826 | if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) { | |
827 | break; | |
828 | } | |
829 | } | |
4551ea7c | 830 | |
0c349049 | 831 | if (!AdjustSector(&t)) { |
832 | break; | |
833 | } | |
4551ea7c | 834 | |
0c349049 | 835 | // Get material budget |
836 | Double_t xyz0[3]; | |
837 | Double_t xyz1[3]; | |
e4f2f73d | 838 | Double_t param[7]; |
0c349049 | 839 | Double_t x; |
840 | Double_t y; | |
841 | Double_t z; | |
4551ea7c | 842 | |
0c349049 | 843 | // Starting global position |
844 | t.GetXYZ(xyz0); | |
845 | // End global position | |
846 | x = fTrSec[0]->GetLayer(row0)->GetX(); | |
847 | if (!t.GetProlongation(x,y,z)) { | |
848 | break; | |
849 | } | |
850 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); | |
851 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
852 | xyz1[2] = z; | |
853 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); | |
854 | xrho= param[0]*param[4]; | |
855 | xx0 = param[1]; // Get mean propagation parameters | |
856 | ||
857 | // Flags for marking the track momentum and direction. The track is | |
858 | // marked only if it has at least 1 cluster picked up in the current | |
859 | // chamber. | |
860 | Bool_t kUPDATED = kFALSE; | |
861 | Bool_t kMARKED = kFALSE; | |
862 | ||
863 | // Propagate and update | |
864 | sector = t.GetSector(); | |
865 | //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) { | |
866 | for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) { | |
867 | ||
868 | // Mark track kinematics | |
869 | if (itime > 10 && kUPDATED && !kMARKED) { | |
870 | t.SetTrackSegmentDirMom(iplane); | |
871 | kMARKED = kTRUE; | |
872 | } | |
873 | ||
874 | Int_t ilayer = GetGlobalTimeBin(0,iplane,itime); | |
875 | expectedNumberOfClusters++; | |
876 | t.SetNExpected(t.GetNExpected() + 1); | |
877 | if (t.GetX() > 345.0) { | |
878 | t.SetNExpectedLast(t.GetNExpectedLast() + 1); | |
879 | } | |
880 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); | |
881 | AliTRDcluster *cl = 0; | |
882 | UInt_t index = 0; | |
883 | Double_t maxChi2 = fgkMaxChi2; | |
884 | x = timeBin.GetX(); | |
885 | ||
886 | if (timeBin) { | |
887 | ||
888 | AliTRDcluster *cl0 = timeBin[0]; | |
889 | if (!cl0) { | |
890 | // No clusters in given time bin | |
891 | continue; | |
4551ea7c | 892 | } |
893 | ||
0c349049 | 894 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); |
895 | if (plane > lastplane) { | |
896 | continue; | |
897 | } | |
898 | ||
899 | Int_t timebin = cl0->GetLocalTimeBin(); | |
900 | AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index); | |
901 | ||
902 | if (cl2) { | |
903 | cl = cl2; | |
904 | //Double_t h01 = GetTiltFactor(cl); //I.B's fix | |
905 | //maxChi2=t.GetPredictedChi2(cl,h01); | |
906 | } | |
907 | ||
908 | if (cl) { | |
909 | ||
910 | //if (cl->GetNPads()<5) | |
911 | Double_t dxsample = timeBin.GetdX(); | |
912 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
913 | Double_t h01 = GetTiltFactor(cl); | |
914 | Int_t det = cl->GetDetector(); | |
7bce990c | 915 | Int_t pplane = fGeom->GetPlane(det); |
0c349049 | 916 | |
917 | if (t.GetX() > 345.0) { | |
918 | t.SetNLast(t.GetNLast() + 1); | |
919 | t.SetChi2Last(t.GetChi2Last() + maxChi2); | |
920 | } | |
921 | ||
922 | Double_t xcluster = cl->GetX(); | |
923 | t.PropagateTo(xcluster,xx0,xrho); | |
924 | if (!AdjustSector(&t)) { | |
925 | break; //I.B's fix | |
926 | } | |
927 | ||
928 | maxChi2 = t.GetPredictedChi2(cl,h01); | |
929 | if (maxChi2 < 1e+10) { | |
7bce990c | 930 | if (!t.UpdateMI(cl,maxChi2,index,h01,pplane)) { |
0c349049 | 931 | // ???? |
932 | } | |
933 | else { | |
934 | //SetCluster(cl, GetNumberOfClusters()-1); | |
935 | kUPDATED = kTRUE; | |
936 | } | |
937 | } | |
938 | ||
939 | } | |
940 | ||
941 | } | |
942 | ||
943 | } | |
944 | ||
945 | } | |
946 | ||
947 | return expectedNumberOfClusters; | |
948 | ||
75bd7f81 | 949 | } |
7b580082 | 950 | |
75bd7f81 | 951 | //_____________________________________________________________________________ |
4551ea7c | 952 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t) |
8979685e | 953 | { |
75bd7f81 | 954 | // |
8979685e | 955 | // Starting from current radial position of track <t> this function |
0c349049 | 956 | // extrapolates the track up to the outer timebin and in the sensitive |
8979685e | 957 | // layers confirms prolongation if a close cluster is found. |
958 | // Returns the number of clusters expected to be found in sensitive layers | |
0c349049 | 959 | // Uses the geomanager for material description |
75bd7f81 | 960 | // |
7e448bcc | 961 | // return number of assigned clusters ? |
962 | // | |
963 | ||
4551ea7c | 964 | Int_t sector; |
0c349049 | 965 | |
966 | Double_t xx0 = 0.0; | |
967 | Double_t xrho = 0.0; | |
968 | ||
969 | Float_t ratio0 = 0.0; | |
970 | ||
4551ea7c | 971 | Int_t expectedNumberOfClusters = 0; |
0c349049 | 972 | |
8979685e | 973 | AliTRDtracklet tracklet; |
33744e5d | 974 | |
0c349049 | 975 | const Int_t kNclusters = 1000; |
976 | Int_t clusters[kNclusters]; | |
977 | for (Int_t i = 0; i < kNclusters; i++) { | |
978 | clusters[i] = -1; | |
979 | } | |
980 | ||
bcb6fb78 | 981 | // // Calibration fill 2D |
982 | // AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); | |
983 | // if (!calibra) { | |
984 | // AliInfo("Could not get Calibra instance\n"); | |
985 | // } | |
986 | // if (calibra->GetMITracking()) { | |
987 | // calibra->ResetTrack(); | |
988 | // } | |
77566f2a | 989 | |
0c349049 | 990 | // Loop through the TRD planes |
6984f7c1 | 991 | for (Int_t iplane = 0; iplane < AliTRDtrack::kNplane; iplane++) { |
4551ea7c | 992 | |
0c349049 | 993 | Int_t hb = iplane * 10; |
7e448bcc | 994 | fHClSearch->Fill(hb); |
995 | ||
0c349049 | 996 | // Get the global time bin numbers for the first an last |
997 | // local time bin of the given plane | |
4551ea7c | 998 | Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); |
999 | Int_t rowlast = GetGlobalTimeBin(0,iplane,0); | |
0c349049 | 1000 | |
1001 | // Get the X coordinates of the propagation layer for the first time bin | |
4551ea7c | 1002 | Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX(); |
1003 | if (currentx < t.GetX()) { | |
7e448bcc | 1004 | fHClSearch->Fill(hb+1); |
4551ea7c | 1005 | continue; |
1006 | } | |
1007 | ||
0c349049 | 1008 | // Propagate closer to the current chamber if neccessary |
4551ea7c | 1009 | if (currentx > (fgkMaxStep + t.GetX())) { |
1010 | if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) { | |
7e448bcc | 1011 | fHClSearch->Fill(hb+2); |
4551ea7c | 1012 | break; |
1013 | } | |
1014 | } | |
0c349049 | 1015 | |
1016 | // Rotate track to adjacent sector if neccessary | |
4551ea7c | 1017 | if (!AdjustSector(&t)) { |
7e448bcc | 1018 | fHClSearch->Fill(hb+3); |
4551ea7c | 1019 | break; |
8979685e | 1020 | } |
0c349049 | 1021 | |
1022 | // Check whether azimuthal angle is getting too large | |
4551ea7c | 1023 | if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) { |
7e448bcc | 1024 | fHClSearch->Fill(hb+4); |
4551ea7c | 1025 | break; |
1026 | } | |
1027 | ||
4551ea7c | 1028 | Double_t xyz0[3]; |
1029 | Double_t xyz1[3]; | |
1030 | Double_t param[7]; | |
1031 | Double_t x; | |
1032 | Double_t y; | |
1033 | Double_t z; | |
0c349049 | 1034 | // Global start position (beginning of chamber) |
4551ea7c | 1035 | t.GetXYZ(xyz0); |
0c349049 | 1036 | // X-position of the end of the chamber |
7b580082 | 1037 | x = fTrSec[0]->GetLayer(rowlast)->GetX(); |
0c349049 | 1038 | // Get local Y and Z at the X-position of the end of the chamber |
4551ea7c | 1039 | if (!t.GetProlongation(x,y,z)) { |
7e448bcc | 1040 | fHClSearch->Fill(hb+5); |
4551ea7c | 1041 | break; |
1042 | } | |
0c349049 | 1043 | // Global end position (end of chamber) |
4551ea7c | 1044 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); |
1045 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
1046 | xyz1[2] = z; | |
0c349049 | 1047 | |
1048 | // Calculate the mean material budget along the path inside the chamber | |
97ccb02b | 1049 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); |
0c349049 | 1050 | // The mean propagation parameters (density*length and radiation length) |
97ccb02b | 1051 | xrho = param[0]*param[4]; |
0c349049 | 1052 | xx0 = param[1]; |
4551ea7c | 1053 | |
0c349049 | 1054 | // Find the clusters and tracklet along the path inside the chamber |
1055 | sector = t.GetSector(); | |
4551ea7c | 1056 | Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet); |
7e448bcc | 1057 | fHNCl->Fill(tracklet.GetN()); |
1058 | ||
0c349049 | 1059 | // Discard if in less than 1/3 of the available timebins |
1060 | // clusters are found | |
4551ea7c | 1061 | if (tracklet.GetN() < GetTimeBinsPerPlane()/3) { |
7e448bcc | 1062 | fHClSearch->Fill(hb+6); |
4551ea7c | 1063 | continue; |
1064 | } | |
1065 | ||
8979685e | 1066 | // |
7b580082 | 1067 | // Propagate and update track |
8979685e | 1068 | // |
4551ea7c | 1069 | for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) { |
4551ea7c | 1070 | Int_t ilayer = GetGlobalTimeBin(0, iplane,itime); |
8979685e | 1071 | expectedNumberOfClusters++; |
27eaf44b | 1072 | t.SetNExpected(t.GetNExpected() + 1); |
4551ea7c | 1073 | if (t.GetX() > 345.0) { |
27eaf44b | 1074 | t.SetNExpectedLast(t.GetNExpectedLast() + 1); |
4551ea7c | 1075 | } |
1076 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); | |
7e448bcc | 1077 | AliTRDcluster *cl = 0; |
4551ea7c | 1078 | UInt_t index = 0; |
1079 | Double_t maxChi2 = fgkMaxChi2; | |
8979685e | 1080 | x = timeBin.GetX(); |
4551ea7c | 1081 | |
8979685e | 1082 | if (timeBin) { |
e4f2f73d | 1083 | if (clusters[ilayer] > 0) { |
1084 | index = clusters[ilayer]; | |
1085 | cl = (AliTRDcluster *)GetCluster(index); | |
1086 | //Double_t h01 = GetTiltFactor(cl); // I.B's fix | |
1087 | //maxChi2=t.GetPredictedChi2(cl,h01); // | |
1088 | } | |
8979685e | 1089 | |
1090 | if (cl) { | |
e4f2f73d | 1091 | //if (cl->GetNPads() < 5) |
1092 | Double_t dxsample = timeBin.GetdX(); | |
1093 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
1094 | Double_t h01 = GetTiltFactor(cl); | |
1095 | Int_t det = cl->GetDetector(); | |
1096 | Int_t plane = fGeom->GetPlane(det); | |
1097 | if (t.GetX() > 345.0) { | |
1098 | t.SetNLast(t.GetNLast() + 1); | |
1099 | t.SetChi2Last(t.GetChi2Last() + maxChi2); | |
1100 | } | |
1101 | Double_t xcluster = cl->GetX(); | |
1102 | t.PropagateTo(xcluster,xx0,xrho); | |
1103 | maxChi2 = t.GetPredictedChi2(cl,h01); | |
1104 | ||
1105 | if (maxChi2<1e+10) | |
1106 | if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) { | |
1107 | if (!t.Update(cl,maxChi2,index,h01)) { | |
1108 | // ???? | |
1109 | } | |
1110 | } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07 | |
43bfc8af | 1111 | |
4551ea7c | 1112 | |
bcb6fb78 | 1113 | // if (calibra->GetMITracking()) { |
1114 | // calibra->UpdateHistograms(cl,&t); | |
1115 | // } | |
77566f2a | 1116 | |
e4f2f73d | 1117 | // Reset material budget if 2 consecutive gold |
1118 | if (plane > 0) { | |
1119 | if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) { | |
1120 | t.SetBudget(2,0.0); | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | } | |
4551ea7c | 1125 | |
8979685e | 1126 | } |
4551ea7c | 1127 | |
59393e34 | 1128 | } |
4551ea7c | 1129 | |
1130 | ratio0 = ncl / Float_t(fTimeBinsPerPlane); | |
27eaf44b | 1131 | Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); |
1132 | if ((tracklet.GetChi2() < 18.0) && | |
1133 | (ratio0 > 0.8) && | |
1134 | (ratio1 > 0.6) && | |
1135 | (ratio0+ratio1 > 1.5) && | |
1136 | (t.GetNCross() == 0) && | |
1137 | (TMath::Abs(t.GetSnp()) < 0.85) && | |
1138 | (t.GetNumberOfClusters() > 20)){ | |
7e448bcc | 1139 | //if (ratio0 > 0.8) { |
4551ea7c | 1140 | t.MakeBackupTrack(); // Make backup of the track until is gold |
59393e34 | 1141 | } |
7b580082 | 1142 | |
8979685e | 1143 | } |
5443e65e | 1144 | |
75bd7f81 | 1145 | return expectedNumberOfClusters; |
0c349049 | 1146 | |
75bd7f81 | 1147 | } |
1e9bb598 | 1148 | |
75bd7f81 | 1149 | //_____________________________________________________________________________ |
4551ea7c | 1150 | Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep) |
5443e65e | 1151 | { |
75bd7f81 | 1152 | // |
0c349049 | 1153 | // Starting from current X-position of track <t> this function |
5443e65e | 1154 | // extrapolates the track up to radial position <xToGo>. |
1155 | // Returns 1 if track reaches the plane, and 0 otherwise | |
75bd7f81 | 1156 | // |
1157 | ||
59393e34 | 1158 | const Double_t kEpsilon = 0.00001; |
0c349049 | 1159 | |
1160 | // Current track X-position | |
4551ea7c | 1161 | Double_t xpos = t.GetX(); |
4551ea7c | 1162 | |
0c349049 | 1163 | // Direction: inward or outward |
1164 | Double_t dir = (xpos < xToGo) ? 1.0 : -1.0; | |
4551ea7c | 1165 | |
0c349049 | 1166 | while (((xToGo - xpos) * dir) > kEpsilon) { |
4551ea7c | 1167 | |
1168 | Double_t xyz0[3]; | |
1169 | Double_t xyz1[3]; | |
1170 | Double_t param[7]; | |
1171 | Double_t x; | |
1172 | Double_t y; | |
1173 | Double_t z; | |
0c349049 | 1174 | |
1175 | // The next step size | |
1176 | Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep); | |
1177 | ||
1178 | // Get the global position of the starting point | |
1179 | t.GetXYZ(xyz0); | |
1180 | ||
1181 | // X-position after next step | |
4551ea7c | 1182 | x = xpos + step; |
1183 | ||
0c349049 | 1184 | // Get local Y and Z at the X-position of the next step |
4551ea7c | 1185 | if (!t.GetProlongation(x,y,z)) { |
0c349049 | 1186 | return 0; // No prolongation possible |
4551ea7c | 1187 | } |
1188 | ||
0c349049 | 1189 | // The global position of the end point of this prolongation step |
4551ea7c | 1190 | xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); |
1191 | xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); | |
1192 | xyz1[2] = z; | |
1193 | ||
0c349049 | 1194 | // Calculate the mean material budget between start and |
1195 | // end point of this prolongation step | |
1196 | AliTracker::MeanMaterialBudget(xyz0,xyz1,param); | |
1197 | ||
1198 | // Propagate the track to the X-position after the next step | |
97ccb02b | 1199 | if (!t.PropagateTo(x,param[1],param[0]*param[4])) { |
4551ea7c | 1200 | return 0; |
1201 | } | |
0c349049 | 1202 | |
1203 | // Rotate the track if necessary | |
59393e34 | 1204 | AdjustSector(&t); |
0c349049 | 1205 | |
1206 | // New track X-position | |
59393e34 | 1207 | xpos = t.GetX(); |
4551ea7c | 1208 | |
5443e65e | 1209 | } |
75bd7f81 | 1210 | |
5443e65e | 1211 | return 1; |
5443e65e | 1212 | |
59393e34 | 1213 | } |
5443e65e | 1214 | |
c630aafd | 1215 | //_____________________________________________________________________________ |
1216 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1217 | { | |
75bd7f81 | 1218 | // |
c630aafd | 1219 | // Fills clusters into TRD tracking_sectors |
1220 | // Note that the numbering scheme for the TRD tracking_sectors | |
1221 | // differs from that of TRD sectors | |
75bd7f81 | 1222 | // |
1223 | ||
e4f2f73d | 1224 | |
1225 | if (ReadClusters(fClusters, cTree)) { | |
0c349049 | 1226 | AliError("Problem with reading the clusters !"); |
1227 | return 1; | |
c630aafd | 1228 | } |
0c349049 | 1229 | Int_t ncl = fClusters->GetEntriesFast(); |
4551ea7c | 1230 | fNclusters = ncl; |
1231 | AliInfo(Form("Sorting %d clusters",ncl)); | |
c630aafd | 1232 | |
1233 | UInt_t index; | |
6c94f330 | 1234 | while (ncl--) { |
33744e5d | 1235 | |
4551ea7c | 1236 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl); |
1237 | Int_t detector = c->GetDetector(); | |
1238 | Int_t localTimeBin = c->GetLocalTimeBin(); | |
1239 | Int_t sector = fGeom->GetSector(detector); | |
1240 | Int_t plane = fGeom->GetPlane(detector); | |
439c63c8 | 1241 | Int_t trackingSector = sector; |
4551ea7c | 1242 | |
0c349049 | 1243 | //if (c->GetQ() > 10) { |
1244 | // Int_t chamber = fGeom->GetChamber(detector); | |
1245 | //} | |
c630aafd | 1246 | |
af26ce80 | 1247 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
4551ea7c | 1248 | if (gtb < 0) { |
1249 | continue; | |
1250 | } | |
029cd327 | 1251 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1252 | |
4551ea7c | 1253 | index = ncl; |
33744e5d | 1254 | |
7e448bcc | 1255 | fHXCl->Fill(c->GetX()); |
33744e5d | 1256 | |
7e448bcc | 1257 | fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX()); |
1258 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); | |
af26ce80 | 1259 | |
4551ea7c | 1260 | } |
75bd7f81 | 1261 | |
c630aafd | 1262 | return 0; |
75bd7f81 | 1263 | |
c630aafd | 1264 | } |
1265 | ||
5443e65e | 1266 | //_____________________________________________________________________________ |
b7a0917f | 1267 | void AliTRDtracker::UnloadClusters() |
5443e65e | 1268 | { |
1269 | // | |
1270 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1271 | // | |
1272 | ||
4551ea7c | 1273 | Int_t i; |
1274 | Int_t nentr; | |
5443e65e | 1275 | |
1276 | nentr = fClusters->GetEntriesFast(); | |
4551ea7c | 1277 | for (i = 0; i < nentr; i++) { |
1278 | delete fClusters->RemoveAt(i); | |
1279 | } | |
b7a0917f | 1280 | fNclusters = 0; |
5443e65e | 1281 | |
1282 | nentr = fSeeds->GetEntriesFast(); | |
4551ea7c | 1283 | for (i = 0; i < nentr; i++) { |
1284 | delete fSeeds->RemoveAt(i); | |
1285 | } | |
5443e65e | 1286 | |
1287 | nentr = fTracks->GetEntriesFast(); | |
4551ea7c | 1288 | for (i = 0; i < nentr; i++) { |
1289 | delete fTracks->RemoveAt(i); | |
1290 | } | |
5443e65e | 1291 | |
1292 | Int_t nsec = AliTRDgeometry::kNsect; | |
5443e65e | 1293 | for (i = 0; i < nsec; i++) { |
1294 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1295 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | } | |
1300 | ||
75bd7f81 | 1301 | //_____________________________________________________________________________ |
e4f2f73d | 1302 | Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *esd) |
7ad19338 | 1303 | { |
1304 | // | |
1305 | // Creates seeds using clusters between position inner plane and outer plane | |
1306 | // | |
75bd7f81 | 1307 | |
4551ea7c | 1308 | const Double_t kMaxTheta = 1.0; |
1309 | const Double_t kMaxPhi = 2.0; | |
1310 | ||
1311 | const Double_t kRoad0y = 6.0; // Road for middle cluster | |
1312 | const Double_t kRoad0z = 8.5; // Road for middle cluster | |
1313 | ||
1314 | const Double_t kRoad1y = 2.0; // Road in y for seeded cluster | |
1315 | const Double_t kRoad1z = 20.0; // Road in z for seeded cluster | |
1316 | ||
1317 | const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster | |
1318 | const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster | |
c6f438c0 | 1319 | const Int_t kMaxSeed = 3000; |
7ad19338 | 1320 | |
4551ea7c | 1321 | Int_t maxSec = AliTRDgeometry::kNsect; |
1322 | ||
1323 | // Linear fitters in planes | |
1324 | TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const | |
1325 | TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed | |
69b55c55 | 1326 | fitterTC.StoreData(kTRUE); |
1327 | fitterT2.StoreData(kTRUE); | |
4551ea7c | 1328 | AliRieman rieman(1000); // Rieman fitter |
1329 | AliRieman rieman2(1000); // Rieman fitter | |
1330 | ||
1331 | // Find the maximal and minimal layer for the planes | |
7ad19338 | 1332 | Int_t layers[6][2]; |
4551ea7c | 1333 | AliTRDpropagationLayer *reflayers[6]; |
1334 | for (Int_t i = 0; i < 6; i++) { | |
1335 | layers[i][0] = 10000; | |
1336 | layers[i][1] = 0; | |
1337 | } | |
1338 | for (Int_t ns = 0; ns < maxSec; ns++) { | |
1339 | for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) { | |
1340 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(ilayer)); | |
1341 | if (layer == 0) { | |
1342 | continue; | |
1343 | } | |
7ad19338 | 1344 | Int_t det = layer[0]->GetDetector(); |
1345 | Int_t plane = fGeom->GetPlane(det); | |
4551ea7c | 1346 | if (ilayer < layers[plane][0]) { |
1347 | layers[plane][0] = ilayer; | |
1348 | } | |
1349 | if (ilayer > layers[plane][1]) { | |
1350 | layers[plane][1] = ilayer; | |
1351 | } | |
7ad19338 | 1352 | } |
1353 | } | |
4551ea7c | 1354 | |
f162af62 | 1355 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); |
6c94f330 | 1356 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
4551ea7c | 1357 | Double_t hL[6]; // Tilting angle |
1358 | Double_t xcl[6]; // X - position of reference cluster | |
1359 | Double_t ycl[6]; // Y - position of reference cluster | |
1360 | Double_t zcl[6]; // Z - position of reference cluster | |
1361 | ||
1362 | AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters | |
1363 | Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length | |
1364 | ||
1365 | Double_t chi2R = 0.0; | |
1366 | Double_t chi2Z = 0.0; | |
1367 | Double_t chi2RF = 0.0; | |
1368 | Double_t chi2ZF = 0.0; | |
1369 | ||
1370 | Int_t nclusters; // Total number of clusters | |
1371 | for (Int_t i = 0; i < 6; i++) { | |
1372 | hL[i] = h01; | |
1373 | if (i%2==1) { | |
1374 | hL[i]*=-1.0; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | // Registered seed | |
c6f438c0 | 1379 | AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6]; |
1380 | AliTRDseed *seed[kMaxSeed]; | |
4551ea7c | 1381 | for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) { |
1382 | seed[iseed]= &pseed[iseed*6]; | |
1383 | } | |
69b55c55 | 1384 | AliTRDseed *cseed = seed[0]; |
4551ea7c | 1385 | |
1386 | Double_t seedquality[kMaxSeed]; | |
1387 | Double_t seedquality2[kMaxSeed]; | |
1388 | Double_t seedparams[kMaxSeed][7]; | |
1389 | Int_t seedlayer[kMaxSeed]; | |
1390 | Int_t registered = 0; | |
1391 | Int_t sort[kMaxSeed]; | |
1392 | ||
1393 | // | |
1394 | // Seeding part | |
1395 | // | |
1396 | for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors | |
1397 | //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors | |
1398 | ||
1399 | registered = 0; // Reset registerd seed counter | |
1400 | cseed = seed[registered]; | |
1401 | Float_t iter = 0.0; | |
1402 | ||
1403 | for (Int_t sLayer = 2; sLayer >= 0; sLayer--) { | |
1404 | //for (Int_t dseed = 5; dseed < 15; dseed += 3) { | |
1405 | ||
1406 | iter += 1.0; | |
1407 | Int_t dseed = 5 + Int_t(iter) * 3; | |
1408 | ||
69b55c55 | 1409 | // Initialize seeding layers |
4551ea7c | 1410 | for (Int_t ilayer = 0; ilayer < 6; ilayer++) { |
69b55c55 | 1411 | reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed); |
1412 | xcl[ilayer] = reflayers[ilayer]->GetX(); | |
4551ea7c | 1413 | } |
1414 | ||
1415 | Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5; | |
1416 | AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0]; | |
1417 | AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1]; | |
1418 | AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2]; | |
1419 | AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3]; | |
1420 | ||
1421 | Int_t maxn3 = layer3; | |
1422 | for (Int_t icl3 = 0; icl3 < maxn3; icl3++) { | |
33744e5d | 1423 | |
69b55c55 | 1424 | AliTRDcluster *cl3 = layer3[icl3]; |
4551ea7c | 1425 | if (!cl3) { |
1426 | continue; | |
1427 | } | |
1428 | padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0); | |
69b55c55 | 1429 | ycl[sLayer+3] = cl3->GetY(); |
1430 | zcl[sLayer+3] = cl3->GetZ(); | |
4551ea7c | 1431 | Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); |
1432 | Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); | |
1433 | Int_t maxn0 = layer0; | |
1434 | ||
1435 | for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) { | |
1436 | ||
69b55c55 | 1437 | AliTRDcluster *cl0 = layer0[icl0]; |
4551ea7c | 1438 | if (!cl0) { |
1439 | continue; | |
1440 | } | |
1441 | if (cl3->IsUsed() && cl0->IsUsed()) { | |
1442 | continue; | |
1443 | } | |
69b55c55 | 1444 | ycl[sLayer+0] = cl0->GetY(); |
1445 | zcl[sLayer+0] = cl0->GetZ(); | |
4551ea7c | 1446 | if (ycl[sLayer+0] > yymax0) { |
1447 | break; | |
1448 | } | |
1449 | Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); | |
1450 | if (TMath::Abs(tanphi) > kMaxPhi) { | |
1451 | continue; | |
1452 | } | |
1453 | Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); | |
1454 | if (TMath::Abs(tantheta) > kMaxTheta) { | |
1455 | continue; | |
1456 | } | |
1457 | padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0); | |
1458 | ||
1459 | // Expected position in 1 layer | |
1460 | Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]); | |
1461 | Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]); | |
1462 | Float_t yymin1 = y1exp - kRoad0y - tanphi; | |
1463 | Float_t yymax1 = y1exp + kRoad0y + tanphi; | |
1464 | Int_t maxn1 = layer1; | |
1465 | ||
1466 | for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) { | |
1467 | ||
69b55c55 | 1468 | AliTRDcluster *cl1 = layer1[icl1]; |
4551ea7c | 1469 | if (!cl1) { |
1470 | continue; | |
1471 | } | |
69b55c55 | 1472 | Int_t nusedCl = 0; |
1473 | if (cl3->IsUsed()) nusedCl++; | |
1474 | if (cl0->IsUsed()) nusedCl++; | |
1475 | if (cl1->IsUsed()) nusedCl++; | |
4551ea7c | 1476 | if (nusedCl > 1) { |
1477 | continue; | |
1478 | } | |
69b55c55 | 1479 | ycl[sLayer+1] = cl1->GetY(); |
1480 | zcl[sLayer+1] = cl1->GetZ(); | |
4551ea7c | 1481 | if (ycl[sLayer+1] > yymax1) { |
1482 | break; | |
1483 | } | |
1484 | if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) { | |
1485 | continue; | |
1486 | } | |
1487 | if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) { | |
1488 | continue; | |
1489 | } | |
1490 | padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0); | |
1491 | ||
1492 | Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp); | |
1493 | Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]); | |
1494 | Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z); | |
1495 | if (index2 <= 0) { | |
1496 | continue; | |
1497 | } | |
1498 | AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2); | |
1499 | padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0); | |
1500 | ycl[sLayer+2] = cl2->GetY(); | |
1501 | zcl[sLayer+2] = cl2->GetZ(); | |
1502 | if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) { | |
1503 | continue; | |
1504 | } | |
1505 | ||
69b55c55 | 1506 | rieman.Reset(); |
1507 | rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10); | |
1508 | rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10); | |
1509 | rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10); | |
1510 | rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10); | |
1511 | rieman.Update(); | |
4551ea7c | 1512 | |
1513 | // Reset fitter | |
1514 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
69b55c55 | 1515 | cseed[iLayer].Reset(); |
1516 | } | |
4551ea7c | 1517 | chi2Z = 0.0; |
1518 | chi2R = 0.0; | |
1519 | ||
1520 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
ca1e1e5b | 1521 | cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); |
1522 | chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]) | |
1523 | * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]); | |
1524 | cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); | |
1525 | cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); | |
1526 | chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]) | |
1527 | * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]); | |
1528 | cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); | |
69b55c55 | 1529 | } |
4551ea7c | 1530 | if (TMath::Sqrt(chi2R) > 1.0/iter) { |
1531 | continue; | |
1532 | } | |
1533 | if (TMath::Sqrt(chi2Z) > 7.0/iter) { | |
1534 | continue; | |
69b55c55 | 1535 | } |
4551ea7c | 1536 | |
1537 | Float_t minmax[2] = { -100.0, 100.0 }; | |
1538 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
1539 | Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5 | |
ca1e1e5b | 1540 | + 1.0 - cseed[sLayer+iLayer].GetZref(0); |
4551ea7c | 1541 | if (max < minmax[1]) { |
1542 | minmax[1] = max; | |
1543 | } | |
1544 | Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5 | |
ca1e1e5b | 1545 | - 1.0 - cseed[sLayer+iLayer].GetZref(0); |
4551ea7c | 1546 | if (min > minmax[0]) { |
1547 | minmax[0] = min; | |
1548 | } | |
1549 | } | |
1550 | ||
69b55c55 | 1551 | Bool_t isFake = kFALSE; |
4551ea7c | 1552 | if (cl0->GetLabel(0) != cl3->GetLabel(0)) { |
1553 | isFake = kTRUE; | |
1554 | } | |
1555 | if (cl1->GetLabel(0) != cl3->GetLabel(0)) { | |
1556 | isFake = kTRUE; | |
1557 | } | |
1558 | if (cl2->GetLabel(0) != cl3->GetLabel(0)) { | |
1559 | isFake = kTRUE; | |
1560 | } | |
1561 | ||
1562 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
1563 | if ((!isFake) || ((icl3%10) == 0)) { // Debugging print | |
1564 | TTreeSRedirector &cstream = *fDebugStreamer; | |
1565 | cstream << "Seeds0" | |
1566 | << "isFake=" << isFake | |
1567 | << "Cl0.=" << cl0 | |
1568 | << "Cl1.=" << cl1 | |
1569 | << "Cl2.=" << cl2 | |
1570 | << "Cl3.=" << cl3 | |
1571 | << "Xref=" << xref | |
1572 | << "X0=" << xcl[sLayer+0] | |
1573 | << "X1=" << xcl[sLayer+1] | |
1574 | << "X2=" << xcl[sLayer+2] | |
1575 | << "X3=" << xcl[sLayer+3] | |
1576 | << "Y2exp=" << y2exp | |
1577 | << "Z2exp=" << z2exp | |
1578 | << "Chi2R=" << chi2R | |
1579 | << "Chi2Z=" << chi2Z | |
1580 | << "Seed0.=" << &cseed[sLayer+0] | |
1581 | << "Seed1.=" << &cseed[sLayer+1] | |
1582 | << "Seed2.=" << &cseed[sLayer+2] | |
1583 | << "Seed3.=" << &cseed[sLayer+3] | |
1584 | << "Zmin=" << minmax[0] | |
1585 | << "Zmax=" << minmax[1] | |
1586 | << "\n"; | |
d337ef8d | 1587 | } |
69b55c55 | 1588 | } |
33744e5d | 1589 | |
4551ea7c | 1590 | //////////////////////////////////////////////////////////////////////////////////// |
33744e5d | 1591 | // |
4551ea7c | 1592 | // Fit seeding part |
33744e5d | 1593 | // |
4551ea7c | 1594 | //////////////////////////////////////////////////////////////////////////////////// |
33744e5d | 1595 | |
69b55c55 | 1596 | cl[sLayer+0] = cl0; |
1597 | cl[sLayer+1] = cl1; | |
1598 | cl[sLayer+2] = cl2; | |
1599 | cl[sLayer+3] = cl3; | |
4551ea7c | 1600 | Bool_t isOK = kTRUE; |
1601 | ||
1602 | for (Int_t jLayer = 0; jLayer < 4; jLayer++) { | |
1603 | ||
ca1e1e5b | 1604 | cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]); |
1605 | cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]); | |
1606 | cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]); | |
4551ea7c | 1607 | |
7bce990c | 1608 | for (Int_t jter = 0; jter < 2; jter++) { |
4551ea7c | 1609 | |
69b55c55 | 1610 | // |
4551ea7c | 1611 | // In iteration 0 we try only one pad-row |
1612 | // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows | |
69b55c55 | 1613 | // |
1614 | AliTRDseed tseed = cseed[sLayer+jLayer]; | |
4551ea7c | 1615 | Float_t roadz = padlength[sLayer+jLayer] * 0.5; |
7bce990c | 1616 | if (jter > 0) { |
4551ea7c | 1617 | roadz = padlength[sLayer+jLayer]; |
1618 | } | |
1619 | ||
1620 | Float_t quality = 10000.0; | |
1621 | ||
1622 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1623 | ||
1624 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime)); | |
1625 | Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer]; | |
1626 | Double_t zexp = cl[sLayer+jLayer]->GetZ(); | |
1627 | ||
7bce990c | 1628 | if (jter > 0) { |
4551ea7c | 1629 | // Try 2 pad-rows in second iteration |
ca1e1e5b | 1630 | zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer; |
4551ea7c | 1631 | if (zexp > cl[sLayer+jLayer]->GetZ()) { |
1632 | zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5; | |
1633 | } | |
1634 | if (zexp < cl[sLayer+jLayer]->GetZ()) { | |
1635 | zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5; | |
1636 | } | |
69b55c55 | 1637 | } |
4551ea7c | 1638 | |
ca1e1e5b | 1639 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; |
4551ea7c | 1640 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); |
1641 | if (index <= 0) { | |
1642 | continue; | |
1643 | } | |
7bce990c | 1644 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
4551ea7c | 1645 | |
ca1e1e5b | 1646 | tseed.SetIndexes(iTime,index); |
7bce990c | 1647 | tseed.SetClusters(iTime,clu); // Register cluster |
1648 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1649 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1650 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1651 | |
1652 | } | |
1653 | ||
69b55c55 | 1654 | tseed.Update(); |
4551ea7c | 1655 | |
1656 | // Count the number of clusters and distortions into quality | |
ca1e1e5b | 1657 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1658 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 | |
1659 | + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 | |
1660 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
7bce990c | 1661 | if ((jter == 0) && tseed.IsOK()) { |
4551ea7c | 1662 | cseed[sLayer+jLayer] = tseed; |
1663 | quality = tquality; | |
1664 | if (tquality < 5) { | |
1665 | break; | |
1666 | } | |
1667 | } | |
1668 | if (tseed.IsOK() && (tquality < quality)) { | |
69b55c55 | 1669 | cseed[sLayer+jLayer] = tseed; |
69b55c55 | 1670 | } |
4551ea7c | 1671 | |
7bce990c | 1672 | } // Loop: jter |
4551ea7c | 1673 | |
1674 | if (!cseed[sLayer+jLayer].IsOK()) { | |
69b55c55 | 1675 | isOK = kFALSE; |
1676 | break; | |
4551ea7c | 1677 | } |
1678 | ||
69b55c55 | 1679 | cseed[sLayer+jLayer].CookLabels(); |
1680 | cseed[sLayer+jLayer].UpdateUsed(); | |
ca1e1e5b | 1681 | nusedCl += cseed[sLayer+jLayer].GetNUsed(); |
4551ea7c | 1682 | if (nusedCl > 25) { |
69b55c55 | 1683 | isOK = kFALSE; |
1684 | break; | |
4551ea7c | 1685 | } |
1686 | ||
1687 | } // Loop: jLayer | |
1688 | ||
1689 | if (!isOK) { | |
1690 | continue; | |
69b55c55 | 1691 | } |
4551ea7c | 1692 | nclusters = 0; |
1693 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
1694 | if (cseed[sLayer+iLayer].IsOK()) { | |
ca1e1e5b | 1695 | nclusters += cseed[sLayer+iLayer].GetN2(); |
69b55c55 | 1696 | } |
1697 | } | |
4551ea7c | 1698 | |
1699 | // Iteration 0 | |
69b55c55 | 1700 | rieman.Reset(); |
4551ea7c | 1701 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { |
1702 | rieman.AddPoint(xcl[sLayer+iLayer] | |
ca1e1e5b | 1703 | ,cseed[sLayer+iLayer].GetYfitR(0) |
1704 | ,cseed[sLayer+iLayer].GetZProb() | |
4551ea7c | 1705 | ,1 |
1706 | ,10); | |
69b55c55 | 1707 | } |
1708 | rieman.Update(); | |
4551ea7c | 1709 | |
1710 | chi2R = 0.0; | |
1711 | chi2Z = 0.0; | |
1712 | ||
1713 | for (Int_t iLayer = 0; iLayer < 4; iLayer++) { | |
ca1e1e5b | 1714 | cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); |
1715 | chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)) | |
1716 | * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)); | |
1717 | cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); | |
1718 | cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); | |
1719 | chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()) | |
1720 | * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()); | |
1721 | cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); | |
69b55c55 | 1722 | } |
1723 | Double_t curv = rieman.GetC(); | |
4551ea7c | 1724 | |
69b55c55 | 1725 | // |
4551ea7c | 1726 | // Likelihoods |
6c94f330 | 1727 | // |
ca1e1e5b | 1728 | Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1)) |
1729 | + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1)) | |
1730 | + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1)) | |
1731 | + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1)); | |
4551ea7c | 1732 | Double_t likea = TMath::Exp(-sumda*10.6); |
1733 | Double_t likechi2 = 0.0000000001; | |
1734 | if (chi2R < 0.5) { | |
1735 | likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73); | |
1736 | } | |
1737 | Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019); | |
1738 | Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19); | |
1739 | Double_t like = likea * likechi2 * likechi2z * likeN; | |
ca1e1e5b | 1740 | Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9); |
1741 | Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1) | |
1742 | - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9); | |
6c94f330 | 1743 | Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005); |
69b55c55 | 1744 | |
4551ea7c | 1745 | seedquality[registered] = like; |
1746 | seedlayer[registered] = sLayer; | |
1747 | if (TMath::Log(0.000000000000001 + like) < -15) { | |
1748 | continue; | |
1749 | } | |
69b55c55 | 1750 | AliTRDseed seedb[6]; |
4551ea7c | 1751 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
69b55c55 | 1752 | seedb[iLayer] = cseed[iLayer]; |
1753 | } | |
4551ea7c | 1754 | |
1755 | //////////////////////////////////////////////////////////////////////////////////// | |
ad670fba | 1756 | // |
4551ea7c | 1757 | // Full track fit part |
33744e5d | 1758 | // |
4551ea7c | 1759 | //////////////////////////////////////////////////////////////////////////////////// |
1760 | ||
1761 | Int_t nlayers = 0; | |
1762 | Int_t nusedf = 0; | |
1763 | Int_t findable = 0; | |
1764 | ||
69b55c55 | 1765 | // |
4551ea7c | 1766 | // Add new layers - avoid long extrapolation |
69b55c55 | 1767 | // |
4551ea7c | 1768 | Int_t tLayer[2] = { 0, 0 }; |
1769 | if (sLayer == 2) { | |
1770 | tLayer[0] = 1; | |
1771 | tLayer[1] = 0; | |
1772 | } | |
1773 | if (sLayer == 1) { | |
1774 | tLayer[0] = 5; | |
1775 | tLayer[1] = 0; | |
1776 | } | |
1777 | if (sLayer == 0) { | |
1778 | tLayer[0] = 4; | |
1779 | tLayer[1] = 5; | |
1780 | } | |
1781 | ||
1782 | for (Int_t iLayer = 0; iLayer < 2; iLayer++) { | |
1783 | Int_t jLayer = tLayer[iLayer]; // Set tracking layer | |
69b55c55 | 1784 | cseed[jLayer].Reset(); |
ca1e1e5b | 1785 | cseed[jLayer].SetTilt(hL[jLayer]); |
1786 | cseed[jLayer].SetPadLength(padlength[jLayer]); | |
1787 | cseed[jLayer].SetX0(xcl[jLayer]); | |
4551ea7c | 1788 | // Get pad length and rough cluster |
ca1e1e5b | 1789 | Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0) |
1790 | ,cseed[jLayer].GetZref(0) | |
4551ea7c | 1791 | ,kRoad2y |
1792 | ,kRoad2z); | |
1793 | if (indexdummy <= 0) { | |
1794 | continue; | |
1795 | } | |
1796 | AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy); | |
1797 | padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0); | |
69b55c55 | 1798 | } |
4551ea7c | 1799 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); |
1800 | ||
1801 | for (Int_t iLayer = 0; iLayer < 2; iLayer++) { | |
1802 | ||
1803 | Int_t jLayer = tLayer[iLayer]; // set tracking layer | |
1804 | if ((jLayer == 0) && !(cseed[1].IsOK())) { | |
1805 | continue; // break not allowed | |
1806 | } | |
1807 | if ((jLayer == 5) && !(cseed[4].IsOK())) { | |
1808 | continue; // break not allowed | |
1809 | } | |
ca1e1e5b | 1810 | Float_t zexp = cseed[jLayer].GetZref(0); |
4551ea7c | 1811 | Double_t zroad = padlength[jLayer] * 0.5 + 1.0; |
1812 | ||
7bce990c | 1813 | for (Int_t jter = 0; jter < 2; jter++) { |
4551ea7c | 1814 | |
69b55c55 | 1815 | AliTRDseed tseed = cseed[jLayer]; |
4551ea7c | 1816 | Float_t quality = 10000.0; |
1817 | ||
1818 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1819 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime)); | |
1820 | Double_t dxlayer = layer.GetX()-xcl[jLayer]; | |
ca1e1e5b | 1821 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; |
4551ea7c | 1822 | Float_t yroad = kRoad1y; |
1823 | Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad); | |
1824 | if (index <= 0) { | |
1825 | continue; | |
1826 | } | |
7bce990c | 1827 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
ca1e1e5b | 1828 | tseed.SetIndexes(iTime,index); |
7bce990c | 1829 | tseed.SetClusters(iTime,clu); // Register cluster |
1830 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1831 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1832 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1833 | } |
1834 | ||
69b55c55 | 1835 | tseed.Update(); |
4551ea7c | 1836 | if (tseed.IsOK()) { |
ca1e1e5b | 1837 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1838 | Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1 | |
1839 | + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 | |
1840 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1841 | if (tquality < quality) { |
1842 | cseed[jLayer] = tseed; | |
1843 | quality = tquality; | |
69b55c55 | 1844 | } |
1845 | } | |
4551ea7c | 1846 | |
1847 | zroad *= 2.0; | |
1848 | ||
7bce990c | 1849 | } // Loop: jter |
4551ea7c | 1850 | |
1851 | if ( cseed[jLayer].IsOK()) { | |
69b55c55 | 1852 | cseed[jLayer].CookLabels(); |
1853 | cseed[jLayer].UpdateUsed(); | |
ca1e1e5b | 1854 | nusedf += cseed[jLayer].GetNUsed(); |
4551ea7c | 1855 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); |
69b55c55 | 1856 | } |
4551ea7c | 1857 | |
1858 | } // Loop: iLayer | |
1859 | ||
1860 | // Make copy | |
69b55c55 | 1861 | AliTRDseed bseed[6]; |
4551ea7c | 1862 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { |
69b55c55 | 1863 | bseed[jLayer] = cseed[jLayer]; |
4551ea7c | 1864 | } |
1865 | Float_t lastquality = 10000.0; | |
1866 | Float_t lastchi2 = 10000.0; | |
1867 | Float_t chi2 = 1000.0; | |
1868 | ||
7bce990c | 1869 | for (Int_t jter = 0; jter < 4; jter++) { |
4551ea7c | 1870 | |
1871 | // Sort tracklets according "quality", try to "improve" 4 worst | |
1872 | Float_t sumquality = 0.0; | |
69b55c55 | 1873 | Float_t squality[6]; |
1874 | Int_t sortindexes[6]; | |
4551ea7c | 1875 | |
1876 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
1877 | if (bseed[jLayer].IsOK()) { | |
69b55c55 | 1878 | AliTRDseed &tseed = bseed[jLayer]; |
ca1e1e5b | 1879 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); |
1880 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); | |
1881 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 | |
1882 | + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 | |
1883 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1884 | squality[jLayer] = tquality; |
1885 | } | |
1886 | else { | |
1887 | squality[jLayer] = -1.0; | |
ad670fba | 1888 | } |
6c94f330 | 1889 | sumquality +=squality[jLayer]; |
69b55c55 | 1890 | } |
1891 | ||
4551ea7c | 1892 | if ((sumquality >= lastquality) || |
1893 | (chi2 > lastchi2)) { | |
1894 | break; | |
1895 | } | |
69b55c55 | 1896 | lastquality = sumquality; |
1897 | lastchi2 = chi2; | |
7bce990c | 1898 | if (jter > 0) { |
4551ea7c | 1899 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { |
69b55c55 | 1900 | cseed[jLayer] = bseed[jLayer]; |
1901 | } | |
1902 | } | |
1903 | TMath::Sort(6,squality,sortindexes,kFALSE); | |
4551ea7c | 1904 | |
1905 | for (Int_t jLayer = 5; jLayer > 1; jLayer--) { | |
1906 | ||
6c94f330 | 1907 | Int_t bLayer = sortindexes[jLayer]; |
1908 | AliTRDseed tseed = bseed[bLayer]; | |
4551ea7c | 1909 | |
1910 | for (Int_t iTime = 2; iTime < 20; iTime++) { | |
1911 | ||
1912 | AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime)); | |
1913 | Double_t dxlayer = layer.GetX() - xcl[bLayer]; | |
ca1e1e5b | 1914 | Double_t zexp = tseed.GetZref(0); |
1915 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); | |
4551ea7c | 1916 | Float_t roadz = padlength[bLayer] + 1; |
ca1e1e5b | 1917 | if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) { |
4551ea7c | 1918 | roadz = padlength[bLayer] * 0.5; |
1919 | } | |
ca1e1e5b | 1920 | if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) { |
4551ea7c | 1921 | roadz = padlength[bLayer] * 0.5; |
1922 | } | |
ca1e1e5b | 1923 | if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) { |
1924 | zexp = tseed.GetZProb(); | |
4551ea7c | 1925 | roadz = padlength[bLayer] * 0.5; |
1926 | } | |
1927 | ||
ca1e1e5b | 1928 | Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor; |
4551ea7c | 1929 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); |
1930 | if (index <= 0) { | |
1931 | continue; | |
69b55c55 | 1932 | } |
7bce990c | 1933 | AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); |
4551ea7c | 1934 | |
ca1e1e5b | 1935 | tseed.SetIndexes(iTime,index); |
7bce990c | 1936 | tseed.SetClusters(iTime,clu); // Register cluster |
1937 | tseed.SetX(iTime,dxlayer); // Register cluster | |
1938 | tseed.SetY(iTime,clu->GetY()); // Register cluster | |
1939 | tseed.SetZ(iTime,clu->GetZ()); // Register cluster | |
4551ea7c | 1940 | |
1941 | } | |
1942 | ||
69b55c55 | 1943 | tseed.Update(); |
c6f438c0 | 1944 | if (tseed.IsOK()) { |
ca1e1e5b | 1945 | Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); |
1946 | Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); | |
1947 | Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 | |
1948 | + TMath::Abs(dangle) / 0.1 | |
1949 | + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 | |
1950 | + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; | |
4551ea7c | 1951 | if (tquality<squality[bLayer]) { |
69b55c55 | 1952 | bseed[bLayer] = tseed; |
4551ea7c | 1953 | } |
69b55c55 | 1954 | } |
4551ea7c | 1955 | |
1956 | } // Loop: jLayer | |
1957 | ||
1958 | chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE); | |
1959 | ||
7bce990c | 1960 | } // Loop: jter |
4551ea7c | 1961 | |
1962 | nclusters = 0; | |
1963 | nlayers = 0; | |
1964 | findable = 0; | |
1965 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
ca1e1e5b | 1966 | if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) { |
69b55c55 | 1967 | findable++; |
4551ea7c | 1968 | } |
1969 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 1970 | nclusters += cseed[iLayer].GetN2(); |
69b55c55 | 1971 | nlayers++; |
1972 | } | |
1973 | } | |
4551ea7c | 1974 | if (nlayers < 3) { |
1975 | continue; | |
1976 | } | |
69b55c55 | 1977 | rieman.Reset(); |
4551ea7c | 1978 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
1979 | if (cseed[iLayer].IsOK()) { | |
1980 | rieman.AddPoint(xcl[iLayer] | |
ca1e1e5b | 1981 | ,cseed[iLayer].GetYfitR(0) |
1982 | ,cseed[iLayer].GetZProb() | |
4551ea7c | 1983 | ,1 |
1984 | ,10); | |
1985 | } | |
69b55c55 | 1986 | } |
1987 | rieman.Update(); | |
4551ea7c | 1988 | |
1989 | chi2RF = 0.0; | |
1990 | chi2ZF = 0.0; | |
1991 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
1992 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 1993 | cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer])); |
1994 | chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0)) | |
1995 | * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0)); | |
1996 | cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer])); | |
1997 | cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer])); | |
1998 | chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz()) | |
1999 | * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz()); | |
2000 | cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer])); | |
69b55c55 | 2001 | } |
2002 | } | |
4551ea7c | 2003 | chi2RF /= TMath::Max((nlayers - 3.0),1.0); |
2004 | chi2ZF /= TMath::Max((nlayers - 3.0),1.0); | |
2005 | curv = rieman.GetC(); | |
2006 | ||
2007 | Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber | |
2008 | Double_t dzmf = rieman.GetDZat(xref2); | |
2009 | Double_t zmf = rieman.GetZat(xref2); | |
69b55c55 | 2010 | |
69b55c55 | 2011 | // |
4551ea7c | 2012 | // Fit hyperplane |
69b55c55 | 2013 | // |
4551ea7c | 2014 | Int_t npointsT = 0; |
69b55c55 | 2015 | fitterTC.ClearPoints(); |
2016 | fitterT2.ClearPoints(); | |
2017 | rieman2.Reset(); | |
4551ea7c | 2018 | |
2019 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2020 | ||
2021 | if (!cseed[iLayer].IsOK()) { | |
2022 | continue; | |
2023 | } | |
2024 | ||
2025 | for (Int_t itime = 0; itime < 25; itime++) { | |
2026 | ||
ca1e1e5b | 2027 | if (!cseed[iLayer].IsUsable(itime)) { |
4551ea7c | 2028 | continue; |
2029 | } | |
2030 | // X relative to the middle chamber | |
ca1e1e5b | 2031 | Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2; |
2032 | Double_t y = cseed[iLayer].GetY(itime); | |
2033 | Double_t z = cseed[iLayer].GetZ(itime); | |
69b55c55 | 2034 | // ExB correction to the correction |
4551ea7c | 2035 | // Tilted rieman |
69b55c55 | 2036 | Double_t uvt[6]; |
4551ea7c | 2037 | // Global x |
ca1e1e5b | 2038 | Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0(); |
4551ea7c | 2039 | Double_t t = 1.0 / (x2*x2 + y*y); |
2040 | uvt[1] = t; // t | |
2041 | uvt[0] = 2.0 * x2 * uvt[1]; // u | |
2042 | uvt[2] = 2.0 * hL[iLayer] * uvt[1]; | |
2043 | uvt[3] = 2.0 * hL[iLayer] * x * uvt[1]; | |
2044 | uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1]; | |
2045 | Double_t error = 2.0 * 0.2 * uvt[1]; | |
69b55c55 | 2046 | fitterT2.AddPoint(uvt,uvt[4],error); |
4551ea7c | 2047 | |
69b55c55 | 2048 | // |
4551ea7c | 2049 | // Constrained rieman |
69b55c55 | 2050 | // |
ca1e1e5b | 2051 | z = cseed[iLayer].GetZ(itime); |
4551ea7c | 2052 | uvt[0] = 2.0 * x2 * t; // u |
2053 | uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1]; | |
2054 | uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t; | |
69b55c55 | 2055 | fitterTC.AddPoint(uvt,uvt[2],error); |
69b55c55 | 2056 | rieman2.AddPoint(x2,y,z,1,10); |
2057 | npointsT++; | |
4551ea7c | 2058 | |
69b55c55 | 2059 | } |
4551ea7c | 2060 | |
2061 | } // Loop: iLayer | |
2062 | ||
69b55c55 | 2063 | rieman2.Update(); |
2064 | fitterTC.Eval(); | |
2065 | fitterT2.Eval(); | |
2066 | Double_t rpolz0 = fitterT2.GetParameter(3); | |
2067 | Double_t rpolz1 = fitterT2.GetParameter(4); | |
4551ea7c | 2068 | |
69b55c55 | 2069 | // |
4551ea7c | 2070 | // Linear fitter - not possible to make boundaries |
2071 | // Do not accept non possible z and dzdx combinations | |
69b55c55 | 2072 | // |
4551ea7c | 2073 | Bool_t acceptablez = kTRUE; |
2074 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2075 | if (cseed[iLayer].IsOK()) { | |
2076 | Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2); | |
ca1e1e5b | 2077 | if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) { |
69b55c55 | 2078 | acceptablez = kFALSE; |
4551ea7c | 2079 | } |
69b55c55 | 2080 | } |
2081 | } | |
4551ea7c | 2082 | if (!acceptablez) { |
69b55c55 | 2083 | fitterT2.FixParameter(3,zmf); |
2084 | fitterT2.FixParameter(4,dzmf); | |
2085 | fitterT2.Eval(); | |
2086 | fitterT2.ReleaseParameter(3); | |
2087 | fitterT2.ReleaseParameter(4); | |
2088 | rpolz0 = fitterT2.GetParameter(3); | |
2089 | rpolz1 = fitterT2.GetParameter(4); | |
2090 | } | |
4551ea7c | 2091 | |
2092 | Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT); | |
2093 | Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT); | |
69b55c55 | 2094 | Double_t polz1c = fitterTC.GetParameter(2); |
4551ea7c | 2095 | Double_t polz0c = polz1c * xref2; |
6c94f330 | 2096 | Double_t aC = fitterTC.GetParameter(0); |
2097 | Double_t bC = fitterTC.GetParameter(1); | |
4551ea7c | 2098 | Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature |
6c94f330 | 2099 | Double_t aR = fitterT2.GetParameter(0); |
2100 | Double_t bR = fitterT2.GetParameter(1); | |
2101 | Double_t dR = fitterT2.GetParameter(2); | |
4551ea7c | 2102 | Double_t cR = 1.0 + bR*bR - dR*aR; |
2103 | Double_t dca = 0.0; | |
2104 | if (cR > 0.0) { | |
2105 | dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR)); | |
2106 | cR = aR / TMath::Sqrt(cR); | |
69b55c55 | 2107 | } |
4551ea7c | 2108 | |
2109 | Double_t chi2ZT2 = 0.0; | |
2110 | Double_t chi2ZTC = 0.0; | |
2111 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2112 | if (cseed[iLayer].IsOK()) { | |
2113 | Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2); | |
2114 | Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2); | |
ca1e1e5b | 2115 | chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2); |
2116 | chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC); | |
69b55c55 | 2117 | } |
2118 | } | |
4551ea7c | 2119 | chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0); |
2120 | chi2ZTC /= TMath::Max((nlayers - 3.0),1.0); | |
2121 | ||
2122 | AliTRDseed::FitRiemanTilt(cseed,kTRUE); | |
2123 | Float_t sumdaf = 0.0; | |
2124 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2125 | if (cseed[iLayer].IsOK()) { | |
ca1e1e5b | 2126 | sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1)) |
2127 | / cseed[iLayer].GetSigmaY2()); | |
4551ea7c | 2128 | } |
2129 | } | |
2130 | sumdaf /= Float_t (nlayers - 2.0); | |
2131 | ||
69b55c55 | 2132 | // |
4551ea7c | 2133 | // Likelihoods for full track |
69b55c55 | 2134 | // |
4551ea7c | 2135 | Double_t likezf = TMath::Exp(-chi2ZF * 0.14); |
2136 | Double_t likechi2C = TMath::Exp(-chi2TC * 0.677); | |
2137 | Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78); | |
2138 | Double_t likeaf = TMath::Exp(-sumdaf * 3.23); | |
2139 | seedquality2[registered] = likezf * likechi2TR * likeaf; | |
33744e5d | 2140 | |
4551ea7c | 2141 | // Still needed ???? |
69b55c55 | 2142 | // Bool_t isGold = kFALSE; |
2143 | // | |
6c94f330 | 2144 | // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold |
2145 | // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold | |
69b55c55 | 2146 | // if (isGold &&nusedf<10){ |
2147 | // for (Int_t jLayer=0;jLayer<6;jLayer++){ | |
6c94f330 | 2148 | // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1) |
69b55c55 | 2149 | // seed[index][jLayer].UseClusters(); //sign gold |
2150 | // } | |
2151 | // } | |
4551ea7c | 2152 | |
2153 | Int_t index0 = 0; | |
2154 | if (!cseed[0].IsOK()) { | |
69b55c55 | 2155 | index0 = 1; |
4551ea7c | 2156 | if (!cseed[1].IsOK()) { |
2157 | index0 = 2; | |
2158 | } | |
69b55c55 | 2159 | } |
ca1e1e5b | 2160 | seedparams[registered][0] = cseed[index0].GetX0(); |
2161 | seedparams[registered][1] = cseed[index0].GetYref(0); | |
2162 | seedparams[registered][2] = cseed[index0].GetZref(0); | |
c6f438c0 | 2163 | seedparams[registered][5] = cR; |
ca1e1e5b | 2164 | seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1))); |
2165 | seedparams[registered][4] = cseed[index0].GetZref(1) | |
2166 | / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1)); | |
69b55c55 | 2167 | seedparams[registered][6] = ns; |
4551ea7c | 2168 | |
2169 | Int_t labels[12]; | |
2170 | Int_t outlab[24]; | |
2171 | Int_t nlab = 0; | |
2172 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2173 | if (!cseed[iLayer].IsOK()) { | |
2174 | continue; | |
2175 | } | |
ca1e1e5b | 2176 | if (cseed[iLayer].GetLabels(0) >= 0) { |
2177 | labels[nlab] = cseed[iLayer].GetLabels(0); | |
69b55c55 | 2178 | nlab++; |
2179 | } | |
ca1e1e5b | 2180 | if (cseed[iLayer].GetLabels(1) >= 0) { |
2181 | labels[nlab] = cseed[iLayer].GetLabels(1); | |
69b55c55 | 2182 | nlab++; |
4551ea7c | 2183 | } |
69b55c55 | 2184 | } |
2185 | Freq(nlab,labels,outlab,kFALSE); | |
4551ea7c | 2186 | Int_t label = outlab[0]; |
2187 | Int_t frequency = outlab[1]; | |
2188 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
ca1e1e5b | 2189 | cseed[iLayer].SetFreq(frequency); |
2190 | cseed[iLayer].SetC(cR); | |
2191 | cseed[iLayer].SetCC(cC); | |
2192 | cseed[iLayer].SetChi2(chi2TR); | |
2193 | cseed[iLayer].SetChi2Z(chi2ZF); | |
69b55c55 | 2194 | } |
33744e5d | 2195 | |
2196 | // Debugging print | |
4551ea7c | 2197 | if (1 || (!isFake)) { |
69b55c55 | 2198 | Float_t zvertex = GetZ(); |
4551ea7c | 2199 | TTreeSRedirector &cstream = *fDebugStreamer; |
2200 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
2201 | cstream << "Seeds1" | |
2202 | << "isFake=" << isFake | |
2203 | << "Vertex=" << zvertex | |
2204 | << "Rieman2.=" << &rieman2 | |
2205 | << "Rieman.=" << &rieman | |
2206 | << "Xref=" << xref | |
2207 | << "X0=" << xcl[0] | |
2208 | << "X1=" << xcl[1] | |
2209 | << "X2=" << xcl[2] | |
2210 | << "X3=" << xcl[3] | |
2211 | << "X4=" << xcl[4] | |
2212 | << "X5=" << xcl[5] | |
2213 | << "Chi2R=" << chi2R | |
2214 | << "Chi2Z=" << chi2Z | |
2215 | << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track | |
2216 | << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track | |
2217 | << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt | |
2218 | << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const | |
2219 | << "Chi2TR=" << chi2TR // Chi2 without vertex constrain | |
2220 | << "Chi2TC=" << chi2TC // Chi2 with vertex constrain | |
2221 | << "C=" << curv // Non constrained - no tilt correction | |
2222 | << "DR=" << dR // DR parameter - tilt correction | |
2223 | << "DCA=" << dca // DCA - tilt correction | |
2224 | << "CR=" << cR // Non constrained curvature - tilt correction | |
2225 | << "CC=" << cC // Constrained curvature | |
2226 | << "Polz0=" << polz0c | |
2227 | << "Polz1=" << polz1c | |
2228 | << "RPolz0=" << rpolz0 | |
2229 | << "RPolz1=" << rpolz1 | |
2230 | << "Ncl=" << nclusters | |
2231 | << "Nlayers=" << nlayers | |
2232 | << "NUsedS=" << nusedCl | |
2233 | << "NUsed=" << nusedf | |
2234 | << "Findable=" << findable | |
2235 | << "Like=" << like | |
2236 | << "LikePrim=" << likePrim | |
2237 | << "Likechi2C=" << likechi2C | |
2238 | << "Likechi2TR=" << likechi2TR | |
2239 | << "Likezf=" << likezf | |
2240 | << "LikeF=" << seedquality2[registered] | |
2241 | << "S0.=" << &cseed[0] | |
2242 | << "S1.=" << &cseed[1] | |
2243 | << "S2.=" << &cseed[2] | |
2244 | << "S3.=" << &cseed[3] | |
2245 | << "S4.=" << &cseed[4] | |
2246 | << "S5.=" << &cseed[5] | |
2247 | << "SB0.=" << &seedb[0] | |
2248 | << "SB1.=" << &seedb[1] | |
2249 | << "SB2.=" << &seedb[2] | |
2250 | << "SB3.=" << &seedb[3] | |
2251 | << "SB4.=" << &seedb[4] | |
2252 | << "SB5.=" << &seedb[5] | |
2253 | << "Label=" << label | |
2254 | << "Freq=" << frequency | |
2255 | << "sLayer=" << sLayer | |
2256 | << "\n"; | |
2257 | } | |
69b55c55 | 2258 | } |
4551ea7c | 2259 | |
2260 | if (registered<kMaxSeed - 1) { | |
69b55c55 | 2261 | registered++; |
2262 | cseed = seed[registered]; | |
2263 | } | |
4551ea7c | 2264 | |
2265 | } // End of loop over layer 1 | |
2266 | ||
2267 | } // End of loop over layer 0 | |
2268 | ||
2269 | } // End of loop over layer 3 | |
2270 | ||
2271 | } // End of loop over seeding time bins | |
2272 | ||
69b55c55 | 2273 | // |
4551ea7c | 2274 | // Choose best |
69b55c55 | 2275 | // |
4551ea7c | 2276 | |
69b55c55 | 2277 | TMath::Sort(registered,seedquality2,sort,kTRUE); |
c6f438c0 | 2278 | Bool_t signedseed[kMaxSeed]; |
4551ea7c | 2279 | for (Int_t i = 0; i < registered; i++) { |
2280 | signedseed[i] = kFALSE; | |
69b55c55 | 2281 | } |
4551ea7c | 2282 | |
7bce990c | 2283 | for (Int_t jter = 0; jter < 5; jter++) { |
4551ea7c | 2284 | |
2285 | for (Int_t iseed = 0; iseed < registered; iseed++) { | |
2286 | ||
69b55c55 | 2287 | Int_t index = sort[iseed]; |
4551ea7c | 2288 | if (signedseed[index]) { |
2289 | continue; | |
2290 | } | |
69b55c55 | 2291 | Int_t labelsall[1000]; |
4551ea7c | 2292 | Int_t nlabelsall = 0; |
2293 | Int_t naccepted = 0;; | |
2294 | Int_t sLayer = seedlayer[index]; | |
2295 | Int_t ncl = 0; | |
2296 | Int_t nused = 0; | |
2297 | Int_t nlayers = 0; | |
69b55c55 | 2298 | Int_t findable = 0; |
4551ea7c | 2299 | |
2300 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
2301 | ||
ca1e1e5b | 2302 | if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) { |
69b55c55 | 2303 | findable++; |
4551ea7c | 2304 | } |
2305 | if (seed[index][jLayer].IsOK()) { | |
69b55c55 | 2306 | seed[index][jLayer].UpdateUsed(); |
ca1e1e5b | 2307 | ncl +=seed[index][jLayer].GetN2(); |
2308 | nused +=seed[index][jLayer].GetNUsed(); | |
69b55c55 | 2309 | nlayers++; |
4551ea7c | 2310 | // Cooking label |
2311 | for (Int_t itime = 0; itime < 25; itime++) { | |
ca1e1e5b | 2312 | if (seed[index][jLayer].IsUsable(itime)) { |
69b55c55 | 2313 | naccepted++; |
4551ea7c | 2314 | for (Int_t ilab = 0; ilab < 3; ilab++) { |
ca1e1e5b | 2315 | Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab); |
4551ea7c | 2316 | if (tindex >= 0) { |
69b55c55 | 2317 | labelsall[nlabelsall] = tindex; |
2318 | nlabelsall++; | |
2319 | } | |
2320 | } | |
2321 | } | |
2322 | } | |
2323 | } | |
4551ea7c | 2324 | |
69b55c55 | 2325 | } |
4551ea7c | 2326 | |
2327 | if (nused > 30) { | |
2328 | continue; | |
69b55c55 | 2329 | } |
4551ea7c | 2330 | |
7bce990c | 2331 | if (jter == 0) { |
4551ea7c | 2332 | if (nlayers < 6) { |
2333 | continue; | |
2334 | } | |
2335 | if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { | |
2336 | continue; // Gold | |
2337 | } | |
7ad19338 | 2338 | } |
4551ea7c | 2339 | |
7bce990c | 2340 | if (jter == 1) { |
4551ea7c | 2341 | if (nlayers < findable) { |
2342 | continue; | |
2343 | } | |
2344 | if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) { | |
2345 | continue; | |
2346 | } | |
2347 | } | |
2348 | ||
7bce990c | 2349 | if (jter == 2) { |
4551ea7c | 2350 | if ((nlayers == findable) || |
2351 | (nlayers == 6)) { | |
2352 | continue; | |
2353 | } | |
2354 | if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) { | |
2355 | continue; | |
2356 | } | |
69b55c55 | 2357 | } |
4551ea7c | 2358 | |
7bce990c | 2359 | if (jter == 3) { |
4551ea7c | 2360 | if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { |
2361 | continue; | |
2362 | } | |
69b55c55 | 2363 | } |
4551ea7c | 2364 | |
7bce990c | 2365 | if (jter == 4) { |
4551ea7c | 2366 | if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) { |
2367 | continue; | |
2368 | } | |
69b55c55 | 2369 | } |
4551ea7c | 2370 | |
69b55c55 | 2371 | signedseed[index] = kTRUE; |
4551ea7c | 2372 | |
2373 | Int_t labels[1000]; | |
2374 | Int_t outlab[1000]; | |
2375 | Int_t nlab = 0; | |
2376 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { | |
2377 | if (seed[index][iLayer].IsOK()) { | |
ca1e1e5b | 2378 | if (seed[index][iLayer].GetLabels(0) >= 0) { |
2379 | labels[nlab] = seed[index][iLayer].GetLabels(0); | |
69b55c55 | 2380 | nlab++; |
2381 | } | |
ca1e1e5b | 2382 | if (seed[index][iLayer].GetLabels(1) >= 0) { |
2383 | labels[nlab] = seed[index][iLayer].GetLabels(1); | |
69b55c55 | 2384 | nlab++; |
4551ea7c | 2385 | } |
2386 | } | |
7ad19338 | 2387 | } |
69b55c55 | 2388 | Freq(nlab,labels,outlab,kFALSE); |
4551ea7c | 2389 | Int_t label = outlab[0]; |
2390 | Int_t frequency = outlab[1]; | |
69b55c55 | 2391 | Freq(nlabelsall,labelsall,outlab,kFALSE); |
4551ea7c | 2392 | Int_t label1 = outlab[0]; |
2393 | Int_t label2 = outlab[2]; | |
2394 | Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted); | |
2395 | Float_t ratio = Float_t(nused) / Float_t(ncl); | |
2396 | if (ratio < 0.25) { | |
2397 | for (Int_t jLayer = 0; jLayer < 6; jLayer++) { | |
2398 | if ((seed[index][jLayer].IsOK()) && | |
ca1e1e5b | 2399 | (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) { |
4551ea7c | 2400 | seed[index][jLayer].UseClusters(); // Sign gold |
2401 | } | |
69b55c55 | 2402 | } |
7ad19338 | 2403 | } |
4551ea7c | 2404 | |
31fd97b2 | 2405 | 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 | 2406 | TTreeSRedirector &cstream = *fDebugStreamer; |
2407 | ||
69b55c55 | 2408 | // |
4551ea7c | 2409 | // Register seed |
69b55c55 | 2410 | // |
4551ea7c | 2411 | AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]); |
2412 | AliTRDtrack dummy; | |
2413 | if (!track) { | |
2414 | track = &dummy; | |
2415 | } | |
2416 | else { | |
69b55c55 | 2417 | AliESDtrack esdtrack; |
4551ea7c | 2418 | esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout); |
69b55c55 | 2419 | esdtrack.SetLabel(label); |
2420 | esd->AddTrack(&esdtrack); | |
4551ea7c | 2421 | if (AliTRDReconstructor::StreamLevel() > 0) { |
2422 | cstream << "Tracks" | |
31fd97b2 | 2423 | << "EventNrInFile=" << eventNrInFile |
4551ea7c | 2424 | << "ESD.=" << &esdtrack |
2425 | << "trd.=" << track | |
2426 | << "trdback.=" << track | |
2427 | << "\n"; | |
2428 | } | |
7ad19338 | 2429 | } |
4551ea7c | 2430 | |
2431 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
2432 | cstream << "Seeds2" | |
7bce990c | 2433 | << "Iter=" << jter |
4551ea7c | 2434 | << "Track.=" << track |
2435 | << "Like=" << seedquality[index] | |
2436 | << "LikeF=" << seedquality2[index] | |
2437 | << "S0.=" << &seed[index][0] | |
2438 | << "S1.=" << &seed[index][1] | |
2439 | << "S2.=" << &seed[index][2] | |
2440 | << "S3.=" << &seed[index][3] | |
2441 | << "S4.=" << &seed[index][4] | |
2442 | << "S5.=" << &seed[index][5] | |
2443 | << "Label=" << label | |
2444 | << "Label1=" << label1 | |
2445 | << "Label2=" << label2 | |
2446 | << "FakeRatio=" << fakeratio | |
2447 | << "Freq=" << frequency | |
2448 | << "Ncl=" << ncl | |
2449 | << "Nlayers=" << nlayers | |
2450 | << "Findable=" << findable | |
2451 | << "NUsed=" << nused | |
2452 | << "sLayer=" << sLayer | |
31fd97b2 | 2453 | << "EventNrInFile=" << eventNrInFile |
4551ea7c | 2454 | << "\n"; |
2455 | } | |
2456 | ||
2457 | } // Loop: iseed | |
2458 | ||
7bce990c | 2459 | } // Loop: jter |
4551ea7c | 2460 | |
2461 | } // End of loop over sectors | |
75bd7f81 | 2462 | |
69b55c55 | 2463 | delete [] pseed; |
75bd7f81 | 2464 | |
e4f2f73d | 2465 | return 0; |
69b55c55 | 2466 | } |
2467 | ||
5443e65e | 2468 | //_____________________________________________________________________________ |
4551ea7c | 2469 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const |
5443e65e | 2470 | { |
2471 | // | |
0c349049 | 2472 | // Reads AliTRDclusters from the file. |
2473 | // The names of the cluster tree and branches | |
a819a5f7 | 2474 | // should match the ones used in AliTRDclusterizer::WriteClusters() |
2475 | // | |
75bd7f81 | 2476 | |
4551ea7c | 2477 | Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster))); |
6c94f330 | 2478 | TObjArray *clusterArray = new TObjArray(nsize+1000); |
5443e65e | 2479 | |
4551ea7c | 2480 | TBranch *branch = clusterTree->GetBranch("TRDcluster"); |
c630aafd | 2481 | if (!branch) { |
4551ea7c | 2482 | AliError("Can't get the branch !"); |
c630aafd | 2483 | return 1; |
2484 | } | |
029cd327 | 2485 | branch->SetAddress(&clusterArray); |
5443e65e | 2486 | |
a819a5f7 | 2487 | // Loop through all entries in the tree |
4551ea7c | 2488 | Int_t nEntries = (Int_t) clusterTree->GetEntries(); |
2489 | Int_t nbytes = 0; | |
e4f2f73d | 2490 | AliTRDcluster *c = 0x0; |
a819a5f7 | 2491 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
2492 | ||
2493 | // Import the tree | |
4551ea7c | 2494 | nbytes += clusterTree->GetEvent(iEntry); |
5443e65e | 2495 | |
a819a5f7 | 2496 | // Get the number of points in the detector |
029cd327 | 2497 | Int_t nCluster = clusterArray->GetEntriesFast(); |
a819a5f7 | 2498 | // Loop through all TRD digits |
2499 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
e4f2f73d | 2500 | if(!(c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster))) continue; |
2501 | array->AddLast(c); | |
2502 | //printf("Add cluster 0x%x.\n", c); | |
4f1c04d3 | 2503 | clusterArray->RemoveAt(iCluster); |
a819a5f7 | 2504 | } |
4551ea7c | 2505 | |
a819a5f7 | 2506 | } |
029cd327 | 2507 | delete clusterArray; |
5443e65e | 2508 | |
c630aafd | 2509 | return 0; |
75bd7f81 | 2510 | |
a819a5f7 | 2511 | } |
2512 | ||
75bd7f81 | 2513 | //_____________________________________________________________________________ |
4551ea7c | 2514 | Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const |
3551db50 | 2515 | { |
2516 | // | |
2517 | // Get track space point with index i | |
2518 | // Origin: C.Cheshkov | |
2519 | // | |
2520 | ||
4551ea7c | 2521 | AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index); |
2522 | Int_t idet = cl->GetDetector(); | |
2523 | Int_t isector = fGeom->GetSector(idet); | |
2524 | Int_t ichamber = fGeom->GetChamber(idet); | |
2525 | Int_t iplan = fGeom->GetPlane(idet); | |
3551db50 | 2526 | Double_t local[3]; |
4551ea7c | 2527 | local[0] = GetX(isector,iplan,cl->GetLocalTimeBin()); |
2528 | local[1] = cl->GetY(); | |
2529 | local[2] = cl->GetZ(); | |
3551db50 | 2530 | Double_t global[3]; |
2531 | fGeom->RotateBack(idet,local,global); | |
2532 | p.SetXYZ(global[0],global[1],global[2]); | |
ae079791 | 2533 | AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; |
3551db50 | 2534 | switch (iplan) { |
2535 | case 0: | |
ae079791 | 2536 | iLayer = AliGeomManager::kTRD1; |
3551db50 | 2537 | break; |
2538 | case 1: | |
ae079791 | 2539 | iLayer = AliGeomManager::kTRD2; |
3551db50 | 2540 | break; |
2541 | case 2: | |
ae079791 | 2542 | iLayer = AliGeomManager::kTRD3; |
3551db50 | 2543 | break; |
2544 | case 3: | |
ae079791 | 2545 | iLayer = AliGeomManager::kTRD4; |
3551db50 | 2546 | break; |
2547 | case 4: | |
ae079791 | 2548 | iLayer = AliGeomManager::kTRD5; |
3551db50 | 2549 | break; |
2550 | case 5: | |
ae079791 | 2551 | iLayer = AliGeomManager::kTRD6; |
3551db50 | 2552 | break; |
2553 | }; | |
4551ea7c | 2554 | Int_t modId = isector * fGeom->Ncham() + ichamber; |
ae079791 | 2555 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); |
3551db50 | 2556 | p.SetVolumeID(volid); |
2557 | ||
2558 | return kTRUE; | |
2559 | ||
2560 | } | |
2561 | ||
75bd7f81 | 2562 | //_____________________________________________________________________________ |
4551ea7c | 2563 | void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const |
029cd327 | 2564 | { |
2565 | // | |
2566 | // This cooks a label. Mmmmh, smells good... | |
2567 | // | |
46d29e70 | 2568 | |
4551ea7c | 2569 | Int_t label = 123456789; |
2570 | Int_t index; | |
2571 | Int_t i; | |
2572 | Int_t j; | |
2573 | Int_t ncl = pt->GetNumberOfClusters(); | |
2574 | ||
2575 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1; | |
5443e65e | 2576 | |
029cd327 | 2577 | Bool_t labelAdded; |
46d29e70 | 2578 | |
6c94f330 | 2579 | Int_t **s = new Int_t* [kRange]; |
4551ea7c | 2580 | for (i = 0; i < kRange; i++) { |
d1b06c24 | 2581 | s[i] = new Int_t[2]; |
2582 | } | |
4551ea7c | 2583 | for (i = 0; i < kRange; i++) { |
2584 | s[i][0] = -1; | |
2585 | s[i][1] = 0; | |
46d29e70 | 2586 | } |
2587 | ||
4551ea7c | 2588 | Int_t t0; |
2589 | Int_t t1; | |
2590 | Int_t t2; | |
2591 | ||
2592 | for (i = 0; i < ncl; i++) { | |
2593 | index = pt->GetClusterIndex(i); | |
2594 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
6c94f330 | 2595 | t0=c->GetLabel(0); |
2596 | t1=c->GetLabel(1); | |
2597 | t2=c->GetLabel(2); | |
46d29e70 | 2598 | } |
2599 | ||
4551ea7c | 2600 | for (i = 0; i < ncl; i++) { |
2601 | index = pt->GetClusterIndex(i); | |
2602 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
2603 | for (Int_t k = 0; k < 3; k++) { | |
2604 | label = c->GetLabel(k); | |
2605 | labelAdded = kFALSE; | |
2606 | j = 0; | |
46d29e70 | 2607 | if (label >= 0) { |
4551ea7c | 2608 | while ((!labelAdded) && (j < kRange)) { |
2609 | if ((s[j][0] == label) || | |
2610 | (s[j][1] == 0)) { | |
2611 | s[j][0] = label; | |
2612 | s[j][1] = s[j][1] + 1; | |
2613 | labelAdded = kTRUE; | |
a9814c09 | 2614 | } |
2615 | j++; | |
2616 | } | |
46d29e70 | 2617 | } |
2618 | } | |
2619 | } | |
2620 | ||
4551ea7c | 2621 | Int_t max = 0; |
6c94f330 | 2622 | label = -123456789; |
46d29e70 | 2623 | |
4551ea7c | 2624 | for (i = 0; i < kRange; i++) { |
2625 | if (s[i][1] > max) { | |
2626 | max = s[i][1]; | |
2627 | label = s[i][0]; | |
46d29e70 | 2628 | } |
2629 | } | |
5443e65e | 2630 | |
4551ea7c | 2631 | for (i = 0; i < kRange; i++) { |
6c94f330 | 2632 | delete []s[i]; |
5443e65e | 2633 | } |
2634 | ||
6c94f330 | 2635 | delete []s; |
5443e65e | 2636 | |
4551ea7c | 2637 | if ((1.0 - Float_t(max)/ncl) > wrong) { |
2638 | label = -label; | |
2639 | } | |
5443e65e | 2640 | |
2641 | pt->SetLabel(label); | |
2642 | ||
46d29e70 | 2643 | } |
2644 | ||
75bd7f81 | 2645 | //_____________________________________________________________________________ |
4551ea7c | 2646 | void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const |
029cd327 | 2647 | { |
2648 | // | |
2649 | // Use clusters, but don't abuse them! | |
2650 | // | |
75bd7f81 | 2651 | |
4551ea7c | 2652 | const Float_t kmaxchi2 = 18; |
2653 | const Float_t kmincl = 10; | |
2654 | ||
2655 | AliTRDtrack *track = (AliTRDtrack *) t; | |
2656 | ||
2657 | Int_t ncl = t->GetNumberOfClusters(); | |
2658 | for (Int_t i = from; i < ncl; i++) { | |
2659 | Int_t index = t->GetClusterIndex(i); | |
2660 | AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); | |
69b55c55 | 2661 | Int_t iplane = fGeom->GetPlane(c->GetDetector()); |
27eaf44b | 2662 | if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) { |
4551ea7c | 2663 | continue; |
2664 | } | |
27eaf44b | 2665 | if (track->GetTracklets(iplane).GetN() < kmincl) { |
4551ea7c | 2666 | continue; |
2667 | } | |
2668 | if (!(c->IsUsed())) { | |
2669 | c->Use(); | |
2670 | } | |
5443e65e | 2671 | } |
5443e65e | 2672 | |
75bd7f81 | 2673 | } |
5443e65e | 2674 | |
75bd7f81 | 2675 | //_____________________________________________________________________________ |
029cd327 | 2676 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 2677 | { |
75bd7f81 | 2678 | // |
5443e65e | 2679 | // Parametrised "expected" error of the cluster reconstruction in Y |
75bd7f81 | 2680 | // |
5443e65e | 2681 | |
2682 | Double_t s = 0.08 * 0.08; | |
2683 | return s; | |
75bd7f81 | 2684 | |
5443e65e | 2685 | } |
2686 | ||
75bd7f81 | 2687 | //_____________________________________________________________________________ |
029cd327 | 2688 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 2689 | { |
75bd7f81 | 2690 | // |
5443e65e | 2691 | // Parametrised "expected" error of the cluster reconstruction in Z |
75bd7f81 | 2692 | // |
5443e65e | 2693 | |
4551ea7c | 2694 | Double_t s = 9.0 * 9.0 / 12.0; |
5443e65e | 2695 | return s; |
75bd7f81 | 2696 | |
5443e65e | 2697 | } |
2698 | ||
75bd7f81 | 2699 | //_____________________________________________________________________________ |
029cd327 | 2700 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 2701 | { |
2702 | // | |
029cd327 | 2703 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 2704 | // in tracking sector <sector> and plane <plane> |
2705 | // | |
2706 | ||
6c94f330 | 2707 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
4551ea7c | 2708 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
2709 | ||
5443e65e | 2710 | return fTrSec[sector]->GetLayer(pl)->GetX(); |
2711 | ||
2712 | } | |
2713 | ||
46d29e70 | 2714 | |
75bd7f81 | 2715 | //_____________________________________________________________________________ |
2716 | AliTRDtracker::AliTRDtrackingSector | |
ad670fba | 2717 | ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs) |
2718 | :fN(0) | |
2719 | ,fGeom(geo) | |
2720 | ,fGeomSector(gs) | |
5443e65e | 2721 | { |
2722 | // | |
2723 | // AliTRDtrackingSector Constructor | |
2724 | // | |
75bd7f81 | 2725 | |
7e448bcc | 2726 | AliTRDpadPlane *padPlane = 0; |
2727 | AliTRDpropagationLayer *ppl = 0; | |
a5cadd36 | 2728 | |
ad670fba | 2729 | // Get holes description from geometry |
3c625a9b | 2730 | Bool_t holes[AliTRDgeometry::kNcham]; |
ad670fba | 2731 | for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) { |
3c625a9b | 2732 | holes[icham] = fGeom->IsHole(0,icham,gs); |
3c625a9b | 2733 | } |
3c625a9b | 2734 | |
ad670fba | 2735 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { |
2736 | fTimeBinIndex[i] = -1; | |
2737 | } | |
5443e65e | 2738 | |
ad670fba | 2739 | Double_t x; |
2740 | Double_t dx; | |
2741 | Double_t rho; | |
2742 | Double_t radLength; | |
5443e65e | 2743 | |
ad670fba | 2744 | // Add layers for each of the planes |
2745 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
a305677e | 2746 | //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
5443e65e | 2747 | |
ad670fba | 2748 | const Int_t kNchambers = AliTRDgeometry::Ncham(); |
a305677e | 2749 | Int_t tbIndex; |
ad670fba | 2750 | Double_t ymax = 0; |
2751 | Double_t ymaxsensitive = 0; | |
2752 | Double_t *zc = new Double_t[kNchambers]; | |
2753 | Double_t *zmax = new Double_t[kNchambers]; | |
3c625a9b | 2754 | Double_t *zmaxsensitive = new Double_t[kNchambers]; |
3551db50 | 2755 | |
ad670fba | 2756 | for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
2757 | ||
2758 | ymax = fGeom->GetChamberWidth(plane) / 2.0; | |
f162af62 | 2759 | padPlane = fGeom->GetPadPlane(plane,0); |
ad670fba | 2760 | ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0; |
2761 | ||
2762 | for (Int_t ch = 0; ch < kNchambers; ch++) { | |
2763 | zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0; | |
2764 | Float_t pad = padPlane->GetRowSize(1); | |
f162af62 | 2765 | Float_t row0 = fGeom->GetRow0(plane,ch,0); |
2766 | Int_t nPads = fGeom->GetRowMax(plane,ch,0); | |
ad670fba | 2767 | zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0; |
2768 | zc[ch] = -(pad * nPads) / 2.0 + row0; | |
5443e65e | 2769 | } |
2770 | ||
bcb6fb78 | 2771 | AliTRDcalibDB *fCalibration = AliTRDcalibDB::Instance(); |
2772 | dx = fCalibration->GetVdrift(0,0,0) | |
f162af62 | 2773 | / AliTRDCommonParam::Instance()->GetSamplingFrequency(); |
ad670fba | 2774 | rho = 0.00295 * 0.85; //???? |
2775 | radLength = 11.0; | |
5443e65e | 2776 | |
3551db50 | 2777 | Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane); |
a305677e | 2778 | //Double_t xbottom = x0 - dxDrift; |
ad670fba | 2779 | //Double_t xtop = x0 + dxAmp; |
bcb6fb78 | 2780 | |
2781 | //temporary !! (A.Bercuci) | |
2782 | Int_t T0 = (Int_t)fCalibration->GetT0Average(AliTRDgeometry::GetDetector(plane, 2, gs)); | |
ad670fba | 2783 | |
59393e34 | 2784 | Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
ad670fba | 2785 | for (Int_t iTime = 0; iTime < nTimeBins; iTime++) { |
2786 | ||
2787 | Double_t xlayer = iTime * dx - dxAmp; | |
2788 | //if (xlayer<0) xlayer = dxAmp / 2.0; | |
59393e34 | 2789 | x = x0 - xlayer; |
ad670fba | 2790 | |
2791 | tbIndex = CookTimeBinIndex(plane,iTime); | |
2792 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane); | |
3c625a9b | 2793 | ppl->SetYmax(ymax,ymaxsensitive); |
ad670fba | 2794 | ppl->SetZ(zc,zmax,zmaxsensitive); |
3c625a9b | 2795 | ppl->SetHoles(holes); |
bcb6fb78 | 2796 | if(iTime == T0) ppl->SetT0(); |
2797 | ||
2798 | InsertLayer(ppl); | |
ad670fba | 2799 | |
5443e65e | 2800 | } |
ad670fba | 2801 | |
5443e65e | 2802 | } |
2803 | ||
5443e65e | 2804 | MapTimeBinLayers(); |
ad670fba | 2805 | |
029cd327 | 2806 | delete [] zc; |
2807 | delete [] zmax; | |
4f1c04d3 | 2808 | delete [] zmaxsensitive; |
5443e65e | 2809 | |
2810 | } | |
2811 | ||
ad670fba | 2812 | //_____________________________________________________________________________ |
2813 | AliTRDtracker::AliTRDtrackingSector | |
2814 | ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/) | |
2815 | :fN(0) | |
2816 | ,fGeom(0) | |
2817 | ,fGeomSector(0) | |
2818 | { | |
2819 | // | |
2820 | // Copy constructor | |
2821 | // | |
2822 | ||
2823 | } | |
2824 | ||
0c349049 | 2825 | //_____________________________________________________________________________ |
2826 | AliTRDtracker::AliTRDtrackingSector | |
2827 | ::~AliTRDtrackingSector() | |
2828 | { | |
2829 | // | |
2830 | // Destructor | |
2831 | // | |
2832 | ||
2833 | for (Int_t i = 0; i < fN; i++) { | |
2834 | delete fLayers[i]; | |
2835 | } | |
2836 | ||
2837 | } | |
2838 | ||
75bd7f81 | 2839 | //_____________________________________________________________________________ |
2840 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2841 | ::CookTimeBinIndex(Int_t plane, Int_t localTB) const | |
5443e65e | 2842 | { |
2843 | // | |
0c349049 | 2844 | // Depending on the digitization parameters calculates global |
2845 | // (i.e. for a whole TRD stack of 6 planes) time bin index for | |
2846 | // timebin <localTB> in plane <plane> | |
59393e34 | 2847 | // |
75bd7f81 | 2848 | |
59393e34 | 2849 | Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
4551ea7c | 2850 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1; |
2851 | if (localTB < 0) { | |
2852 | return -1; | |
2853 | } | |
2854 | if (gtb < 0) { | |
2855 | return -1; | |
2856 | } | |
75bd7f81 | 2857 | |
5443e65e | 2858 | return gtb; |
5443e65e | 2859 | |
75bd7f81 | 2860 | } |
5443e65e | 2861 | |
75bd7f81 | 2862 | //_____________________________________________________________________________ |
2863 | void AliTRDtracker::AliTRDtrackingSector | |
2864 | ::MapTimeBinLayers() | |
5443e65e | 2865 | { |
2866 | // | |
2867 | // For all sensitive time bins sets corresponding layer index | |
2868 | // in the array fTimeBins | |
2869 | // | |
2870 | ||
2871 | Int_t index; | |
2872 | ||
4551ea7c | 2873 | for (Int_t i = 0; i < fN; i++) { |
2874 | ||
5443e65e | 2875 | index = fLayers[i]->GetTimeBinIndex(); |
6c94f330 | 2876 | |
4551ea7c | 2877 | if (index < 0) { |
2878 | continue; | |
2879 | } | |
2880 | if (index >= (Int_t) kMaxTimeBinIndex) { | |
2881 | //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n" | |
2882 | // ,index,kMaxTimeBinIndex-1)); | |
5443e65e | 2883 | continue; |
2884 | } | |
4551ea7c | 2885 | |
5443e65e | 2886 | fTimeBinIndex[index] = i; |
4551ea7c | 2887 | |
5443e65e | 2888 | } |
5443e65e | 2889 | |
75bd7f81 | 2890 | } |
5443e65e | 2891 | |
75bd7f81 | 2892 | //_____________________________________________________________________________ |
2893 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2894 | ::GetLayerNumber(Double_t x) const | |
5443e65e | 2895 | { |
2896 | // | |
2897 | // Returns the number of time bin which in radial position is closest to <x> | |
2898 | // | |
2899 | ||
4551ea7c | 2900 | if (x >= fLayers[fN-1]->GetX()) { |
2901 | return fN - 1; | |
2902 | } | |
2903 | if (x <= fLayers[ 0]->GetX()) { | |
2904 | return 0; | |
2905 | } | |
2906 | ||
2907 | Int_t b = 0; | |
2908 | Int_t e = fN - 1; | |
2909 | Int_t m = (b + e) / 2; | |
ad670fba | 2910 | |
4551ea7c | 2911 | for ( ; b < e; m = (b + e) / 2) { |
2912 | if (x > fLayers[m]->GetX()) { | |
2913 | b = m + 1; | |
2914 | } | |
2915 | else { | |
2916 | e = m; | |
2917 | } | |
5443e65e | 2918 | } |
75bd7f81 | 2919 | |
4551ea7c | 2920 | if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) { |
2921 | return m + 1; | |
2922 | } | |
2923 | else { | |
2924 | return m; | |
2925 | } | |
5443e65e | 2926 | |
2927 | } | |
2928 | ||
75bd7f81 | 2929 | //_____________________________________________________________________________ |
2930 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2931 | ::GetInnerTimeBin() const | |
5443e65e | 2932 | { |
2933 | // | |
2934 | // Returns number of the innermost SENSITIVE propagation layer | |
2935 | // | |
2936 | ||
2937 | return GetLayerNumber(0); | |
5443e65e | 2938 | |
75bd7f81 | 2939 | } |
5443e65e | 2940 | |
75bd7f81 | 2941 | //_____________________________________________________________________________ |
2942 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2943 | ::GetOuterTimeBin() const | |
5443e65e | 2944 | { |
2945 | // | |
2946 | // Returns number of the outermost SENSITIVE time bin | |
2947 | // | |
2948 | ||
2949 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2950 | |
75bd7f81 | 2951 | } |
5443e65e | 2952 | |
75bd7f81 | 2953 | //_____________________________________________________________________________ |
2954 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2955 | ::GetNumberOfTimeBins() const | |
5443e65e | 2956 | { |
2957 | // | |
2958 | // Returns number of SENSITIVE time bins | |
2959 | // | |
2960 | ||
4551ea7c | 2961 | Int_t tb; |
2962 | Int_t layer; | |
2963 | ||
2964 | for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) { | |
5443e65e | 2965 | layer = GetLayerNumber(tb); |
4551ea7c | 2966 | if (layer >= 0) { |
2967 | break; | |
2968 | } | |
5443e65e | 2969 | } |
75bd7f81 | 2970 | |
4551ea7c | 2971 | return tb + 1; |
5443e65e | 2972 | |
75bd7f81 | 2973 | } |
5443e65e | 2974 | |
75bd7f81 | 2975 | //_____________________________________________________________________________ |
2976 | void AliTRDtracker::AliTRDtrackingSector | |
4551ea7c | 2977 | ::InsertLayer(AliTRDpropagationLayer *pl) |
5443e65e | 2978 | { |
2979 | // | |
2980 | // Insert layer <pl> in fLayers array. | |
2981 | // Layers are sorted according to X coordinate. | |
75bd7f81 | 2982 | // |
5443e65e | 2983 | |
4551ea7c | 2984 | if (fN == ((Int_t) kMaxLayersPerSector)) { |
2985 | //AliWarning("Too many layers !\n"); | |
2986 | return; | |
2987 | } | |
2988 | ||
2989 | if (fN == 0) { | |
2990 | fLayers[fN++] = pl; | |
ad670fba | 2991 | return; |
2992 | } | |
2993 | ||
4551ea7c | 2994 | Int_t i = Find(pl->GetX()); |
2995 | ||
2996 | memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
2997 | ||
2998 | fLayers[i] = pl; | |
2999 | fN++; | |
5443e65e | 3000 | |
3001 | } | |
3002 | ||
75bd7f81 | 3003 | //_____________________________________________________________________________ |
3004 | Int_t AliTRDtracker::AliTRDtrackingSector | |
3005 | ::Find(Double_t x) const | |
5443e65e | 3006 | { |
3007 | // | |
3008 | // Returns index of the propagation layer nearest to X | |
3009 | // | |
3010 | ||
4551ea7c | 3011 | if (x <= fLayers[0]->GetX()) { |
3012 | return 0; | |
3013 | } | |
3014 | ||
3015 | if (x > fLayers[fN-1]->GetX()) { | |
3016 | return fN; | |
3017 | } | |
3018 | ||
3019 | Int_t b = 0; | |
3020 | Int_t e = fN-1; | |
3021 | Int_t m = (b + e) / 2; | |
3022 | ||
3023 | for (; b < e; m = (b + e) / 2) { | |
3024 | if (x > fLayers[m]->GetX()) { | |
3025 | b = m + 1; | |
3026 | } | |
3027 | else { | |
3028 | e = m; | |
3029 | } | |
5443e65e | 3030 | } |
7ad19338 | 3031 | |
75bd7f81 | 3032 | return m; |
7ad19338 | 3033 | |
75bd7f81 | 3034 | } |
7ad19338 | 3035 | |
75bd7f81 | 3036 | //_____________________________________________________________________________ |
4551ea7c | 3037 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c) |
75bd7f81 | 3038 | { |
3039 | // | |
3040 | // Returns correction factor for tilted pads geometry | |
3041 | // | |
5443e65e | 3042 | |
4551ea7c | 3043 | Int_t det = c->GetDetector(); |
3044 | Int_t plane = fGeom->GetPlane(det); | |
f162af62 | 3045 | AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0); |
4551ea7c | 3046 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
b8dc2353 | 3047 | |
4551ea7c | 3048 | if (fNoTilt) { |
3049 | h01 = 0; | |
3050 | } | |
75bd7f81 | 3051 | |
fd621f36 | 3052 | return h01; |
5443e65e | 3053 | |
75bd7f81 | 3054 | } |
c630aafd | 3055 | |
75bd7f81 | 3056 | //_____________________________________________________________________________ |
3057 | Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1 | |
4551ea7c | 3058 | , AliTRDtrack *track |
0c349049 | 3059 | , Int_t *clusters |
3060 | , AliTRDtracklet &tracklet) | |
4f1c04d3 | 3061 | { |
6c94f330 | 3062 | // |
0c349049 | 3063 | // Try to find the nearest clusters to the track in the time bins |
3064 | // between <t0> and <t1>. | |
3065 | // Also the corresponding tracklet is calculated | |
4551ea7c | 3066 | // Correction coeficients - depend on TRD parameters - to be changed accordingly |
3067 | // | |
3068 | ||
0c349049 | 3069 | const Int_t kN1 = 100; |
3070 | const Int_t kN2 = 10; | |
3071 | ||
3072 | Double_t x[kN1]; | |
3073 | Double_t yt[kN1]; | |
3074 | Double_t zt[kN1]; | |
3075 | Float_t zmean[kN1]; | |
3076 | Float_t nmean[kN1]; | |
3077 | ||
3078 | Double_t dz[kN2][kN1]; | |
3079 | Double_t dy[kN2][kN1]; | |
3080 | Int_t indexes[kN2][kN1]; // Indexes of the clusters in the road | |
3081 | Int_t best[kN2][kN1]; // Index of best matching cluster | |
3082 | AliTRDcluster *cl[kN2][kN1]; // Pointers to the clusters in the road | |
3083 | ||
3084 | Double_t xmean = 0.0; // Reference x | |
4551ea7c | 3085 | Int_t clfound = 0; |
0c349049 | 3086 | |
3087 | // Initialize the arrays | |
3088 | for (Int_t it = 0; it < kN1; it++) { | |
3089 | ||
3090 | x[it] = 0.0; | |
3091 | yt[it] = 0.0; | |
3092 | zt[it] = 0.0; | |
4551ea7c | 3093 | clusters[it] = -2; |
0c349049 | 3094 | zmean[it] = 0.0; |
3095 | nmean[it] = 0.0; | |
3096 | ||
3097 | for (Int_t ih = 0; ih < kN2; ih++) { | |
3098 | indexes[ih][it] = -2; | |
4551ea7c | 3099 | cl[ih][it] = 0; |
3100 | dz[ih][it] = -100.0; | |
3101 | dy[ih][it] = -100.0; | |
3102 | best[ih][it] = 0; | |
3103 | } | |
0c349049 | 3104 | |
4551ea7c | 3105 | } |
ad670fba | 3106 | |
4551ea7c | 3107 | Double_t x0 = track->GetX(); |
3108 | Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2())); | |
3109 | Int_t nall = 0; | |
3110 | Int_t nfound = 0; | |
3111 | Double_t h01 = 0.0; | |
3112 | Int_t plane = -1; | |
3113 | Int_t detector = -1; | |
3114 | Float_t padlength = 0.0; | |
0c349049 | 3115 | |
4551ea7c | 3116 | AliTRDtrack track2(* track); |
3117 | Float_t snpy = track->GetSnp(); | |
3118 | Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy)); | |
3119 | if (snpy < 0.0) { | |
3120 | tany *= -1.0; | |
3121 | } | |
ad670fba | 3122 | |
6c23ffed | 3123 | Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt()); |
4551ea7c | 3124 | Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl()); |
3125 | Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2); | |
3126 | if (road > 6.0) { | |
3127 | road = 6.0; | |
3128 | } | |
3129 | ||
3130 | for (Int_t it = 0; it < t1-t0; it++) { | |
3131 | ||
3132 | Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 }; | |
3133 | AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0)); | |
3134 | if (timeBin == 0) { | |
3135 | continue; // No indexes1 | |
6c94f330 | 3136 | } |
4551ea7c | 3137 | |
3138 | Int_t maxn = timeBin; | |
3139 | x[it] = timeBin.GetX(); | |
7ad19338 | 3140 | track2.PropagateTo(x[it]); |
6c94f330 | 3141 | yt[it] = track2.GetY(); |
3142 | zt[it] = track2.GetZ(); | |
7ad19338 | 3143 | |
4551ea7c | 3144 | Double_t y = yt[it]; |
3145 | Double_t z = zt[it]; | |
3146 | Double_t chi2 = 1000000.0; | |
4f1c04d3 | 3147 | nall++; |
4551ea7c | 3148 | |
4f1c04d3 | 3149 | // |
4551ea7c | 3150 | // Find 2 nearest cluster at given time bin |
6c94f330 | 3151 | // |
0c349049 | 3152 | Int_t checkPoint[4] = { 0, 0, 0, 0 }; |
3153 | Double_t minY = 123456789.0; | |
3154 | Double_t minD[2] = { 1.0, 1.0 }; | |
7e448bcc | 3155 | |
4551ea7c | 3156 | for (Int_t i = timeBin.Find(y - road); i < maxn; i++) { |
3157 | ||
3158 | AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]); | |
7ad19338 | 3159 | h01 = GetTiltFactor(c); |
4551ea7c | 3160 | if (plane < 0) { |
c6f438c0 | 3161 | Int_t det = c->GetDetector(); |
4551ea7c | 3162 | plane = fGeom->GetPlane(det); |
3163 | padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0); | |
3164 | } | |
7e448bcc | 3165 | |
4551ea7c | 3166 | if (c->GetY() > (y + road)) { |
3167 | break; | |
3168 | } | |
7e448bcc | 3169 | |
3170 | fHDeltaX->Fill(c->GetX() - x[it]); | |
7e448bcc | 3171 | |
3172 | if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) { | |
0c349049 | 3173 | minY = c->GetY() - y; |
3174 | minD[0] = c->GetY() - y; | |
3175 | minD[1] = c->GetZ() - z; | |
7e448bcc | 3176 | } |
3177 | ||
3178 | checkPoint[0]++; | |
3179 | ||
3180 | fHMinZ->Fill(c->GetZ() - z); | |
3181 | if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) { | |
4551ea7c | 3182 | continue; |
7ad19338 | 3183 | } |
7e448bcc | 3184 | checkPoint[1]++; |
7ad19338 | 3185 | |
4551ea7c | 3186 | Double_t dist = TMath::Abs(c->GetZ() - z); |
0c349049 | 3187 | if (dist > (0.5 * padlength + 6.0 * sigmaz)) { |
4551ea7c | 3188 | continue; // 6 sigma boundary cut |
3189 | } | |
7e448bcc | 3190 | checkPoint[2]++; |
3191 | ||
4551ea7c | 3192 | // Sigma boundary cost function |
0c349049 | 3193 | Double_t cost = 0.0; |
4551ea7c | 3194 | if (dist> (0.5 * padlength - sigmaz)){ |
3195 | cost = (dist - 0.5*padlength) / (2.0 * sigmaz); | |
3196 | if (cost > -1) { | |
3197 | cost = (cost + 1.0) * (cost + 1.0); | |
3198 | } | |
3199 | else { | |
3200 | cost = 0.0; | |
3201 | } | |
3202 | } | |
4551ea7c | 3203 | chi2 = track2.GetPredictedChi2(c,h01) + cost; |
7ad19338 | 3204 | clfound++; |
6c94f330 | 3205 | |
4551ea7c | 3206 | if (chi2 > maxChi2[1]) { |
3207 | continue; | |
3208 | } | |
7e448bcc | 3209 | checkPoint[3]++; |
3210 | ||
4551ea7c | 3211 | // Store the clusters in the road |
0c349049 | 3212 | detector = c->GetDetector(); |
4551ea7c | 3213 | for (Int_t ih = 2; ih < 9; ih++) { |
3214 | if (cl[ih][it] == 0) { | |
3215 | cl[ih][it] = c; | |
3216 | indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers | |
7ad19338 | 3217 | break; |
3218 | } | |
4f1c04d3 | 3219 | } |
4551ea7c | 3220 | |
3221 | if (chi2 < maxChi2[0]) { | |
7ad19338 | 3222 | maxChi2[1] = maxChi2[0]; |
3223 | maxChi2[0] = chi2; | |
3224 | indexes[1][it] = indexes[0][it]; | |
3225 | cl[1][it] = cl[0][it]; | |
3226 | indexes[0][it] = timeBin.GetIndex(i); | |
3227 | cl[0][it] = c; | |
3228 | continue; | |
3229 | } | |
4551ea7c | 3230 | maxChi2[1] = chi2; |
3231 | cl[1][it] = c; | |
3232 | indexes[1][it] = timeBin.GetIndex(i); | |
3233 | ||
3234 | } | |
7e448bcc | 3235 | |
0c349049 | 3236 | for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) { |
7e448bcc | 3237 | fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]); |
0c349049 | 3238 | } |
7e448bcc | 3239 | |
3240 | if (checkPoint[3]) { | |
0c349049 | 3241 | if (track->GetSignedPt() > 0) { |
3242 | fHMinYPos->Fill(minY); | |
3243 | } | |
3244 | else { | |
3245 | fHMinYNeg->Fill(minY); | |
3246 | } | |
3247 | fHMinD->Fill(minD[0],minD[1]); | |
3248 | } | |
4551ea7c | 3249 | |
3250 | if (cl[0][it]) { | |
7ad19338 | 3251 | nfound++; |
3252 | xmean += x[it]; | |
3253 | } | |
4551ea7c | 3254 | |
4f1c04d3 | 3255 | } |
4551ea7c | 3256 | |
3257 | if (nfound < 4) { | |
3258 | return 0; | |
3259 | } | |
3260 | xmean /= Float_t(nfound); // Middle x | |
3261 | track2.PropagateTo(xmean); // Propagate track to the center | |
3262 | ||
4f1c04d3 | 3263 | // |
4551ea7c | 3264 | // Choose one of the variants |
7ad19338 | 3265 | // |
4551ea7c | 3266 | Float_t sumz = 0.0; |
3267 | Float_t sum = 0.0; | |
3268 | Double_t sumdy = 0.0; | |
3269 | Double_t sumdy2 = 0.0; | |
3270 | Double_t sumx = 0.0; | |
3271 | Double_t sumxy = 0.0; | |
3272 | Double_t sumx2 = 0.0; | |
3273 | Double_t mpads = 0.0; | |
3274 | ||
0c349049 | 3275 | Int_t changes[kN2]; |
3276 | ||
3277 | Int_t ngood[kN2]; | |
3278 | Int_t nbad[kN2]; | |
4551ea7c | 3279 | |
0c349049 | 3280 | Double_t meanz[kN2]; |
3281 | Double_t moffset[kN2]; // Mean offset | |
3282 | Double_t mean[kN2]; // Mean value | |
3283 | Double_t angle[kN2]; // Angle | |
4551ea7c | 3284 | |
0c349049 | 3285 | Double_t smoffset[kN2]; // Sigma of mean offset |
3286 | Double_t smean[kN2]; // Sigma of mean value | |
3287 | Double_t sangle[kN2]; // Sigma of angle | |
3288 | Double_t smeanangle[kN2]; // Correlation | |
4551ea7c | 3289 | |
0c349049 | 3290 | Double_t sigmas[kN2]; |
3291 | Double_t tchi2s[kN2]; // Chi2s for tracklet | |
ad670fba | 3292 | |
0c349049 | 3293 | for (Int_t it = 0; it < kN2; it++) { |
ad670fba | 3294 | |
4551ea7c | 3295 | ngood[it] = 0; |
3296 | nbad[it] = 0; | |
3297 | ||
3298 | meanz[it] = 0.0; | |
0c349049 | 3299 | moffset[it] = 0.0; // Mean offset |
3300 | mean[it] = 0.0; // Mean value | |
3301 | angle[it] = 0.0; // Angle | |
4551ea7c | 3302 | |
7e448bcc | 3303 | smoffset[it] = 1.0e5; // Sigma of mean offset |
3304 | smean[it] = 1.0e5; // Sigma of mean value | |
3305 | sangle[it] = 1.0e5; // Sigma of angle | |
0c349049 | 3306 | smeanangle[it] = 0.0; // Correlation |
4551ea7c | 3307 | |
7e448bcc | 3308 | sigmas[it] = 1.0e5; |
3309 | tchi2s[it] = 1.0e5; // Chi2s for tracklet | |
75bd7f81 | 3310 | |
3311 | } | |
3312 | ||
7ad19338 | 3313 | // |
4551ea7c | 3314 | // Calculate zmean |
7ad19338 | 3315 | // |
4551ea7c | 3316 | for (Int_t it = 0; it < t1 - t0; it++) { |
3317 | if (!cl[0][it]) { | |
3318 | continue; | |
3319 | } | |
3320 | for (Int_t dt = -3; dt <= 3; dt++) { | |
3321 | if (it+dt < 0) { | |
3322 | continue; | |
3323 | } | |
3324 | if (it+dt > t1-t0) { | |
3325 | continue; | |
3326 | } | |
3327 | if (!cl[0][it+dt]) { | |
3328 | continue; | |
3329 | } | |
3330 | zmean[it] += cl[0][it+dt]->GetZ(); | |
3331 | nmean[it] += 1.0; | |
7ad19338 | 3332 | } |
4551ea7c | 3333 | zmean[it] /= nmean[it]; |
7ad19338 | 3334 | } |
4551ea7c | 3335 | |
3336 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3337 | ||
3338 | best[0][it] = 0; | |
3339 | ||
3340 | for (Int_t ih = 0; ih < 10; ih++) { | |
3341 | dz[ih][it] = -100.0; | |
3342 | dy[ih][it] = -100.0; | |
3343 | if (!cl[ih][it]) { | |
3344 | continue; | |
3345 | } | |
3346 | Double_t xcluster = cl[ih][it]->GetX(); | |
3347 | Double_t ytrack; | |
3348 | Double_t ztrack; | |
3349 | track2.GetProlongation(xcluster,ytrack,ztrack ); | |
3350 | dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z | |
3351 | dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y | |
7ad19338 | 3352 | } |
4551ea7c | 3353 | |
3354 | // Minimize changes | |
3355 | if (!cl[0][it]) { | |
3356 | continue; | |
3357 | } | |
3358 | if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) && | |
3359 | (cl[1][it])) { | |
3360 | if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) { | |
3361 | best[0][it] = 1; | |
4f1c04d3 | 3362 | } |
4551ea7c | 3363 | } |
3364 | ||
7ad19338 | 3365 | } |
4551ea7c | 3366 | |
7ad19338 | 3367 | // |
4551ea7c | 3368 | // Iterative choice of "best path" |
6c94f330 | 3369 | // |
4551ea7c | 3370 | Int_t label = TMath::Abs(track->GetLabel()); |
3371 | Int_t bestiter = 0; | |
3372 | ||
3373 | for (Int_t iter = 0; iter < 9; iter++) { | |
3374 | ||
3375 | changes[iter] = 0; | |
3376 | sumz = 0; | |
3377 | sum = 0; | |
3378 | sumdy = 0; | |
3379 | sumdy2 = 0; | |
3380 | sumx = 0; | |
3381 | sumx2 = 0; | |
3382 | sumxy = 0; | |
3383 | mpads = 0; | |
3384 | ngood[iter] = 0; | |
3385 | nbad[iter] = 0; | |
3386 | ||
3387 | // Linear fit | |
3388 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3389 | ||
3390 | if (!cl[best[iter][it]][it]) { | |
3391 | continue; | |
3392 | } | |
3393 | ||
3394 | // Calculates pad-row changes | |
3395 | Double_t zbefore = cl[best[iter][it]][it]->GetZ(); | |
3396 | Double_t zafter = cl[best[iter][it]][it]->GetZ(); | |
3397 | for (Int_t itd = it - 1; itd >= 0; itd--) { | |
7ad19338 | 3398 | if (cl[best[iter][itd]][itd]) { |
4551ea7c | 3399 | zbefore = cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3400 | break; |
3401 | } | |
3402 | } | |
4551ea7c | 3403 | for (Int_t itd = it + 1; itd < t1 - t0; itd++) { |
7ad19338 | 3404 | if (cl[best[iter][itd]][itd]) { |
4551ea7c | 3405 | zafter = cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3406 | break; |
3407 | } | |
3408 | } | |
4551ea7c | 3409 | if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) && |
3410 | (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) { | |
3411 | changes[iter]++; | |
3412 | } | |
3413 | ||
0c349049 | 3414 | // Distance to reference x |
3415 | Double_t dx = x[it]-xmean; | |
4551ea7c | 3416 | sumz += cl[best[iter][it]][it]->GetZ(); |
4f1c04d3 | 3417 | sum++; |
4551ea7c | 3418 | sumdy += dy[best[iter][it]][it]; |
3419 | sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it]; | |
3420 | sumx += dx; | |
3421 | sumx2 += dx*dx; | |
7ad19338 | 3422 | sumxy += dx*dy[best[iter][it]][it]; |
4551ea7c | 3423 | mpads += cl[best[iter][it]][it]->GetNPads(); |
3424 | if ((cl[best[iter][it]][it]->GetLabel(0) == label) || | |
3425 | (cl[best[iter][it]][it]->GetLabel(1) == label) || | |
3426 | (cl[best[iter][it]][it]->GetLabel(2) == label)) { | |
7ad19338 | 3427 | ngood[iter]++; |
4f1c04d3 | 3428 | } |
4551ea7c | 3429 | else { |
7ad19338 | 3430 | nbad[iter]++; |
4f1c04d3 | 3431 | } |
4551ea7c | 3432 | |
4f1c04d3 | 3433 | } |
4551ea7c | 3434 | |
7ad19338 | 3435 | // |
0c349049 | 3436 | // Calculates line parameters |
7ad19338 | 3437 | // |
4551ea7c | 3438 | Double_t det = sum*sumx2 - sumx*sumx; |
3439 | angle[iter] = (sum*sumxy - sumx*sumdy) / det; | |
3440 | mean[iter] = (sumx2*sumdy - sumx*sumxy) / det; | |
0c349049 | 3441 | meanz[iter] = sumz / sum; |
4551ea7c | 3442 | moffset[iter] = sumdy / sum; |
3443 | mpads /= sum; // Mean number of pads | |
3444 | ||
3445 | Double_t sigma2 = 0.0; // Normalized residuals - for line fit | |
3446 | Double_t sigma1 = 0.0; // Normalized residuals - constant fit | |
3447 | ||
3448 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3449 | if (!cl[best[iter][it]][it]) { | |
3450 | continue; | |
3451 | } | |
3452 | Double_t dx = x[it] - xmean; | |
3453 | Double_t ytr = mean[iter] + angle[iter] * dx; | |
3454 | sigma2 += (dy[best[iter][it]][it] - ytr) | |
3455 | * (dy[best[iter][it]][it] - ytr); | |
3456 | sigma1 += (dy[best[iter][it]][it] - moffset[iter]) | |
3457 | * (dy[best[iter][it]][it] - moffset[iter]); | |
7ad19338 | 3458 | sum++; |
4f1c04d3 | 3459 | } |
4551ea7c | 3460 | sigma2 /= (sum - 2); // Normalized residuals |
3461 | sigma1 /= (sum - 1); // Normalized residuals | |
3462 | smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean | |
3463 | sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle | |
3464 | smeanangle[iter] = sigma2 * (-sumx / det); // Correlation | |
3465 | sigmas[iter] = TMath::Sqrt(sigma1); | |
3466 | smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma | |
3467 | ||
6c94f330 | 3468 | // |
4551ea7c | 3469 | // Iterative choice of "better path" |
6c94f330 | 3470 | // |
4551ea7c | 3471 | for (Int_t it = 0; it < t1 - t0; it++) { |
3472 | ||
3473 | if (!cl[best[iter][it]][it]) { | |
3474 | continue; | |
3475 | } | |
3476 | ||
3477 | // Add unisochronity + angular effect contribution | |
3478 | Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany; | |
3479 | Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2(); | |
3480 | Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean | |
3481 | Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2()); | |
3482 | Double_t mindist = 100000.0; | |
3483 | Int_t ihbest = 0; | |
3484 | ||
0c349049 | 3485 | for (Int_t ih = 0; ih < kN2; ih++) { |
4551ea7c | 3486 | if (!cl[ih][it]) { |
3487 | break; | |
3488 | } | |
3489 | Double_t dist2 = (dy[ih][it] - weighty) / sigmacl; | |
3490 | dist2 *= dist2; // Chi2 distance | |
3491 | if (dist2 < mindist) { | |
7ad19338 | 3492 | mindist = dist2; |
4551ea7c | 3493 | ihbest = ih; |
7ad19338 | 3494 | } |
3495 | } | |
0c349049 | 3496 | |
4551ea7c | 3497 | best[iter+1][it] = ihbest; |
0c349049 | 3498 | |
4f1c04d3 | 3499 | } |
4551ea7c | 3500 | |
4f1c04d3 | 3501 | // |
4551ea7c | 3502 | // Update best hypothesy if better chi2 according tracklet position and angle |
7ad19338 | 3503 | // |
7bce990c | 3504 | sy2 = smean[iter] + track->GetSigmaY2(); |
4551ea7c | 3505 | Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee; |
3506 | Double_t say = track->GetSigmaSnpY(); // track->fCey; | |
6c94f330 | 3507 | |
4551ea7c | 3508 | Double_t detchi = sy2*sa2 - say*say; |
3509 | Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix | |
4f1c04d3 | 3510 | |
4551ea7c | 3511 | Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0] |
3512 | + angle[bestiter] * angle[bestiter] * invers[1] | |
3513 | + 2.0 * mean[bestiter] * angle[bestiter] * invers[2]; | |
3514 | Double_t chi21 = mean[iter] * mean[iter] * invers[0] | |
3515 | + angle[iter] * angle[iter] * invers[1] | |
3516 | + 2.0 * mean[iter] * angle[iter] * invers[2]; | |
3517 | tchi2s[iter] = chi21; | |
3518 | ||
3519 | if ((changes[iter] <= changes[bestiter]) && | |
3520 | (chi21 < chi20)) { | |
3521 | bestiter = iter; | |
7ad19338 | 3522 | } |
4551ea7c | 3523 | |
7ad19338 | 3524 | } |
4551ea7c | 3525 | |
7ad19338 | 3526 | // |
4551ea7c | 3527 | // Set clusters |
7ad19338 | 3528 | // |
4551ea7c | 3529 | Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration |
3530 | Short_t maxpos = -1; | |
3531 | Float_t maxcharge = 0.0; | |
3532 | Short_t maxpos4 = -1; | |
3533 | Float_t maxcharge4 = 0.0; | |
3534 | Short_t maxpos5 = -1; | |
3535 | Float_t maxcharge5 = 0.0; | |
8979685e | 3536 | |
4e009ce4 | 3537 | Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0) |
3538 | ,-AliTracker::GetBz()*0.1); | |
4551ea7c | 3539 | Double_t expectederr = sigma2*sigma2 + 0.01*0.01; |
3540 | if (mpads > 3.5) { | |
3541 | expectederr += (mpads - 3.5) * 0.04; | |
3542 | } | |
3543 | if (changes[bestiter] > 1) { | |
3544 | expectederr += changes[bestiter] * 0.01; | |
3545 | } | |
3546 | expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0; | |
4551ea7c | 3547 | |
3548 | for (Int_t it = 0; it < t1 - t0; it++) { | |
3549 | ||
3550 | if (!cl[best[bestiter][it]][it]) { | |
3551 | continue; | |
69b55c55 | 3552 | } |
4551ea7c | 3553 | |
0c349049 | 3554 | // Set cluster error |
3555 | cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); | |
4551ea7c | 3556 | if (!cl[best[bestiter][it]][it]->IsUsed()) { |
3557 | cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY()); | |
4551ea7c | 3558 | } |
3559 | ||
3560 | // Time bins with maximal charge | |
3561 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { | |
69b55c55 | 3562 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3563 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3564 | } |
6c94f330 | 3565 | |
4551ea7c | 3566 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { |
3567 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { | |
69b55c55 | 3568 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3569 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3570 | } |
3571 | } | |
4551ea7c | 3572 | |
3573 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { | |
3574 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { | |
69b55c55 | 3575 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3576 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3577 | } |
7ad19338 | 3578 | } |
4551ea7c | 3579 | |
3580 | // Time bins with maximal charge | |
3581 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { | |
8979685e | 3582 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3583 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3584 | } |
6c94f330 | 3585 | |
4551ea7c | 3586 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { |
3587 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { | |
8979685e | 3588 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3589 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3590 | } |
3591 | } | |
4551ea7c | 3592 | |
3593 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { | |
3594 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { | |
8979685e | 3595 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
4551ea7c | 3596 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3597 | } |
3598 | } | |
4551ea7c | 3599 | |
7ad19338 | 3600 | clusters[it+t0] = indexes[best[bestiter][it]][it]; |
4551ea7c | 3601 | |
7ad19338 | 3602 | } |
4551ea7c | 3603 | |
4551ea7c | 3604 | // Set tracklet parameters |
4551ea7c | 3605 | Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01; |
3606 | if (mpads > 3.5) { | |
3607 | trackleterr2 += (mpads - 3.5) * 0.04; | |
3608 | } | |
3609 | trackleterr2 += changes[bestiter] * 0.01; | |
3610 | trackleterr2 *= TMath::Max(14.0 - nfound,1.0); | |
3611 | trackleterr2 += 0.2 * (tany-exB)*(tany-exB); | |
3612 | ||
4551ea7c | 3613 | tracklet.Set(xmean |
3614 | ,track2.GetY() + moffset[bestiter] | |
3615 | ,meanz[bestiter] | |
3616 | ,track2.GetAlpha() | |
3617 | ,trackleterr2); | |
7ad19338 | 3618 | tracklet.SetTilt(h01); |
3619 | tracklet.SetP0(mean[bestiter]); | |
3620 | tracklet.SetP1(angle[bestiter]); | |
3621 | tracklet.SetN(nfound); | |
3622 | tracklet.SetNCross(changes[bestiter]); | |
3623 | tracklet.SetPlane(plane); | |
3624 | tracklet.SetSigma2(expectederr); | |
3625 | tracklet.SetChi2(tchi2s[bestiter]); | |
8979685e | 3626 | tracklet.SetMaxPos(maxpos,maxpos4,maxpos5); |
27eaf44b | 3627 | track->SetTracklets(plane,tracklet); |
3628 | track->SetNWrong(track->GetNWrong() + nbad[0]); | |
4551ea7c | 3629 | |
7ad19338 | 3630 | // |
3631 | // Debuging part | |
3632 | // | |
69b55c55 | 3633 | TClonesArray array0("AliTRDcluster"); |
3634 | TClonesArray array1("AliTRDcluster"); | |
4551ea7c | 3635 | array0.ExpandCreateFast(t1 - t0 + 1); |
3636 | array1.ExpandCreateFast(t1 - t0 + 1); | |
3637 | TTreeSRedirector &cstream = *fDebugStreamer; | |
7ad19338 | 3638 | AliTRDcluster dummy; |
3639 | Double_t dy0[100]; | |
8979685e | 3640 | Double_t dyb[100]; |
3641 | ||
4551ea7c | 3642 | for (Int_t it = 0; it < t1 - t0; it++) { |
7ad19338 | 3643 | dy0[it] = dy[0][it]; |
3644 | dyb[it] = dy[best[bestiter][it]][it]; | |
4551ea7c | 3645 | if (cl[0][it]) { |
7ad19338 | 3646 | new(array0[it]) AliTRDcluster(*cl[0][it]); |
3647 | } | |
4551ea7c | 3648 | else { |
7ad19338 | 3649 | new(array0[it]) AliTRDcluster(dummy); |
3650 | } | |
3651 | if(cl[best[bestiter][it]][it]) { | |
3652 | new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]); | |
3653 | } | |
3654 | else{ | |
3655 | new(array1[it]) AliTRDcluster(dummy); | |
3656 | } | |
4f1c04d3 | 3657 | } |
0c349049 | 3658 | |
7ad19338 | 3659 | TGraph graph0(t1-t0,x,dy0); |
3660 | TGraph graph1(t1-t0,x,dyb); | |
3661 | TGraph graphy(t1-t0,x,yt); | |
3662 | TGraph graphz(t1-t0,x,zt); | |
4551ea7c | 3663 | |
3664 | if (AliTRDReconstructor::StreamLevel() > 0) { | |
3665 | cstream << "tracklet" | |
3666 | << "track.=" << track // Track parameters | |
3667 | << "tany=" << tany // Tangent of the local track angle | |
3668 | << "xmean=" << xmean // Xmean - reference x of tracklet | |
3669 | << "tilt=" << h01 // Tilt angle | |
3670 | << "nall=" << nall // Number of foundable clusters | |
3671 | << "nfound=" << nfound // Number of found clusters | |
3672 | << "clfound=" << clfound // Total number of found clusters in road | |
3673 | << "mpads=" << mpads // Mean number of pads per cluster | |
3674 | << "plane=" << plane // Plane number | |
3675 | << "detector=" << detector // Detector number | |
3676 | << "road=" << road // The width of the used road | |
3677 | << "graph0.=" << &graph0 // x - y = dy for closest cluster | |
3678 | << "graph1.=" << &graph1 // x - y = dy for second closest cluster | |
3679 | << "graphy.=" << &graphy // y position of the track | |
3680 | << "graphz.=" << &graphz // z position of the track | |
3681 | //<< "fCl.=" << &array0 // closest cluster | |
3682 | //<< "fCl2.=" << &array1 // second closest cluster | |
3683 | << "maxpos=" << maxpos // Maximal charge postion | |
3684 | << "maxcharge=" << maxcharge // Maximal charge | |
3685 | << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4 | |
3686 | << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4 | |
3687 | << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5 | |
3688 | << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5 | |
3689 | << "bestiter=" << bestiter // Best iteration number | |
3690 | << "tracklet.=" << &tracklet // Corrspond to the best iteration | |
3691 | << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration | |
3692 | << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration | |
3693 | << "sigmas0=" << sigmas[0] // Residuals sigma | |
3694 | << "sigmasb=" << sigmas[bestiter] // Residulas sigma | |
3695 | << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration | |
3696 | << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration | |
3697 | << "ngoodb=" << ngood[bestiter] // in best iteration | |
3698 | << "nbadb=" << nbad[bestiter] // in best iteration | |
3699 | << "changes0=" << changes[0] // Changes of pardrows in iteration number 0 | |
3700 | << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration | |
3701 | << "moffset0=" << moffset[0] // Offset fixing angle in iter=0 | |
3702 | << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0 | |
3703 | << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best | |
3704 | << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best | |
3705 | << "mean0=" << mean[0] // Mean dy in iter=0; | |
3706 | << "smean0=" << smean[0] // Sigma of mean dy in iter=0 | |
3707 | << "meanb=" << mean[bestiter] // Mean dy in iter=best | |
3708 | << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best | |
3709 | << "angle0=" << angle[0] // Angle deviation in the iteration number 0 | |
3710 | << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0 | |
3711 | << "angleb=" << angle[bestiter] // Angle deviation in the best iteration | |
3712 | << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration | |
3713 | << "expectederr=" << expectederr // Expected error of cluster position | |
3714 | << "\n"; | |
3715 | } | |
3716 | ||
4f1c04d3 | 3717 | return nfound; |
4f1c04d3 | 3718 | |
75bd7f81 | 3719 | } |
4f1c04d3 | 3720 | |
75bd7f81 | 3721 | //_____________________________________________________________________________ |
3722 | Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist | |
3723 | , Int_t *outlist, Bool_t down) | |
69b55c55 | 3724 | { |
3725 | // | |
4551ea7c | 3726 | // Sort eleements according occurancy |
3727 | // The size of output array has is 2*n | |
69b55c55 | 3728 | // |
75bd7f81 | 3729 | |
44dbae42 | 3730 | if (n <= 0) { |
a4d2a801 | 3731 | return 0; |
44dbae42 | 3732 | } |
a4d2a801 | 3733 | |
4551ea7c | 3734 | Int_t *sindexS = new Int_t[n]; // Temporary array for sorting |
3735 | Int_t *sindexF = new Int_t[2*n]; | |
3736 | for (Int_t i = 0; i < n; i++) { | |
3737 | sindexF[i] = 0; | |
3738 | } | |
3739 | ||
3740 | TMath::Sort(n,inlist,sindexS,down); | |
3741 | ||
3742 | Int_t last = inlist[sindexS[0]]; | |
3743 | Int_t val = last; | |
3744 | sindexF[0] = 1; | |
3745 | sindexF[0+n] = last; | |
3746 | Int_t countPos = 0; | |
3747 | ||
3748 | // Find frequency | |
3749 | for (Int_t i = 1; i < n; i++) { | |
69b55c55 | 3750 | val = inlist[sindexS[i]]; |
4551ea7c | 3751 | if (last == val) { |
3752 | sindexF[countPos]++; | |
3753 | } | |
3754 | else { | |
69b55c55 | 3755 | countPos++; |
3756 | sindexF[countPos+n] = val; | |
3757 | sindexF[countPos]++; | |
4551ea7c | 3758 | last = val; |
69b55c55 | 3759 | } |
3760 | } | |
4551ea7c | 3761 | if (last == val) { |
3762 | countPos++; | |
3763 | } | |
3764 | ||
3765 | // Sort according frequency | |
3766 | TMath::Sort(countPos,sindexF,sindexS,kTRUE); | |
3767 | ||
3768 | for (Int_t i = 0; i < countPos; i++) { | |
69b55c55 | 3769 | outlist[2*i ] = sindexF[sindexS[i]+n]; |
3770 | outlist[2*i+1] = sindexF[sindexS[i]]; | |
3771 | } | |
4551ea7c | 3772 | |
69b55c55 | 3773 | delete [] sindexS; |
3774 | delete [] sindexF; | |
3775 | ||
3776 | return countPos; | |
75bd7f81 | 3777 | |
69b55c55 | 3778 | } |
3779 | ||
75bd7f81 | 3780 | //_____________________________________________________________________________ |
4551ea7c | 3781 | AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params) |
69b55c55 | 3782 | { |
3783 | // | |
e4f2f73d | 3784 | // Build a TRD track out of tracklet candidates |
3785 | // | |
3786 | // Parameters : | |
3787 | // seeds : array of tracklets | |
3788 | // params : track parameters (see MakeSeeds() function body for a detailed description) | |
3789 | // | |
3790 | // Output : | |
3791 | // The TRD track. | |
3792 | // | |
3793 | // Detailed description | |
3794 | // | |
3795 | // To be discussed with Marian !! | |
69b55c55 | 3796 | // |
4551ea7c | 3797 | |
e4f2f73d | 3798 | AliTRDcalibDB *cal = AliTRDcalibDB::Instance(); |
3799 | Int_t nTimeBins = cal->GetNumberOfTimeBins(); | |
3800 | ||
3801 | ||
4551ea7c | 3802 | Double_t alpha = AliTRDgeometry::GetAlpha(); |
3803 | Double_t shift = AliTRDgeometry::GetAlpha()/2.0; | |
69b55c55 | 3804 | Double_t c[15]; |
4551ea7c | 3805 | |
3806 | c[ 0] = 0.2; | |
3807 | c[ 1] = 0.0; c[ 2] = 2.0; | |
3808 | c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02; | |
3809 | c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1; | |
3810 | c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01; | |
3811 | ||
3812 | Int_t index = 0; | |
3813 | AliTRDcluster *cl = 0; | |
3814 | ||
3815 | for (Int_t ilayer = 0; ilayer < 6; ilayer++) { | |
e4f2f73d | 3816 | |
3817 | if (seeds[ilayer].IsOK()) { | |
3818 | for (Int_t itime = nTimeBins-1; itime > 0; itime--) { | |
3819 | if (seeds[ilayer].GetIndexes(itime) > 0) { | |
3820 | index = seeds[ilayer].GetIndexes(itime); | |
3821 | cl = seeds[ilayer].GetClusters(itime); | |
3822 | //printf("l[%d] index[%d] tb[%d] cptr[%p]\n", ilayer, index, itime, cl); | |
3823 | break; | |
3824 | } | |
69b55c55 | 3825 | } |
3826 | } | |
4551ea7c | 3827 | if (index > 0) { |
3828 | break; | |
3829 | } | |
69b55c55 | 3830 | } |
4551ea7c | 3831 | if (cl == 0) { |
3832 | return 0; | |
3833 | } | |
3834 | ||
3835 | AliTRDtrack *track = new AliTRDtrack(cl | |
3836 | ,index | |
3837 | ,¶ms[1] | |
3838 | ,c | |
3839 | ,params[0] | |
3840 | ,params[6]*alpha+shift); | |
43bfc8af | 3841 | // SetCluster(cl, 0); // A. Bercuci |
3842 | track->PropagateTo(params[0]-5.0); | |
69b55c55 | 3843 | track->ResetCovariance(1); |
4551ea7c | 3844 | |
3845 | Int_t rc = FollowBackProlongation(*track); | |
3846 | if (rc < 30) { | |
69b55c55 | 3847 | delete track; |
4551ea7c | 3848 | track = 0; |
3849 | } | |
3850 | else { | |
69b55c55 | 3851 | track->CookdEdx(); |
44dbae42 | 3852 | track->CookdEdxTimBin(-1); |
4551ea7c | 3853 | CookLabel(track,0.9); |
69b55c55 | 3854 | } |
69b55c55 | 3855 | |
75bd7f81 | 3856 | return track; |
7e448bcc | 3857 | |
0c349049 | 3858 | } |
69b55c55 | 3859 | |
0c349049 | 3860 | //_____________________________________________________________________________ |
3861 | void AliTRDtracker::InitLogHists() | |
3862 | { | |
3863 | // | |
3864 | // Create the log histograms | |
3865 | // | |
7e448bcc | 3866 | |
0c349049 | 3867 | fHBackfit = new TH1D("logTRD_backfit" ,"" |
3868 | , 40,-0.5, 39.5); | |
3869 | fHRefit = new TH1D("logTRD_refit" ,"" | |
3870 | , 40,-0.5, 39.5); | |
3871 | fHClSearch = new TH1D("logTRD_clSearch","" | |
3872 | , 60,-0.5, 59.5); | |
7e448bcc | 3873 | |
0c349049 | 3874 | fHX = new TH1D("logTRD_X" ,";x (cm)" |
3875 | , 200, 50, 400); | |
3876 | fHNCl = new TH1D("logTRD_ncl" ,"" | |
3877 | , 40,-0.5, 39.5); | |
3878 | fHNClTrack = new TH1D("logTRD_nclTrack","" | |
3879 | , 180,-0.5,179.5); | |
7e448bcc | 3880 | |
0c349049 | 3881 | fHMinYPos = new TH1D("logTRD_minYPos" ,";#delta Y (cm)" |
3882 | , 400, -6, 6); | |
3883 | fHMinYNeg = new TH1D("logTRD_minYNeg" ,";#delta Y (cm)" | |
3884 | , 400, -6, 6); | |
3885 | fHMinZ = new TH1D("logTRD_minZ" ,";#delta Z (cm)" | |
3886 | , 400, -20, 20); | |
3887 | fHMinD = new TH2D("logTRD_minD" ,";#delta Y (cm);#delta Z (cm)" | |
3888 | , 100, -6, 6 | |
3889 | , 100, -50, 50); | |
7e448bcc | 3890 | |
0c349049 | 3891 | fHDeltaX = new TH1D("logTRD_deltaX" ,";#delta X (cm)" |
3892 | , 100, -5, 5); | |
3893 | fHXCl = new TH1D("logTRD_xCl" ,";cluster x position (cm)" | |
3894 | ,1000, 280, 380); | |
7e448bcc | 3895 | |
0c349049 | 3896 | const Char_t *nameFindCl[4] = { "logTRD_clY" |
3897 | , "logTRD_clZ" | |
3898 | , "logTRD_clB" | |
3899 | , "logTRD_clG" }; | |
7e448bcc | 3900 | |
0c349049 | 3901 | for (Int_t i = 0; i < 4; i++) { |
3902 | fHFindCl[i] = new TH1D(nameFindCl[i],"",30,-0.5,29.5); | |
7e448bcc | 3903 | } |
7e448bcc | 3904 | |
0c349049 | 3905 | } |
7e448bcc | 3906 | |
0c349049 | 3907 | //_____________________________________________________________________________ |
3908 | void AliTRDtracker::SaveLogHists() | |
3909 | { | |
3910 | // | |
3911 | // Save the log histograms in AliESDs.root | |
3912 | // | |
7e448bcc | 3913 | |
0c349049 | 3914 | TDirectory *sav = gDirectory; |
3915 | TFile *logFile = 0; | |
7e448bcc | 3916 | |
3917 | TSeqCollection *col = gROOT->GetListOfFiles(); | |
0c349049 | 3918 | Int_t nn = col->GetEntries(); |
3919 | for (Int_t i = 0; i < nn; i++) { | |
3920 | logFile = (TFile *) col->At(i); | |
3921 | if (strstr(logFile->GetName(),"AliESDs.root")) { | |
3922 | break; | |
3923 | } | |
7e448bcc | 3924 | } |
3925 | ||
3926 | logFile->cd(); | |
7e448bcc | 3927 | |
0c349049 | 3928 | fHBackfit->Write(fHBackfit->GetName(),TObject::kOverwrite); |
3929 | fHRefit->Write(fHRefit->GetName(),TObject::kOverwrite); | |
3930 | fHClSearch->Write(fHClSearch->GetName(),TObject::kOverwrite); | |
3931 | fHX->Write(fHX->GetName(),TObject::kOverwrite); | |
3932 | fHNCl->Write(fHNCl->GetName(),TObject::kOverwrite); | |
3933 | fHNClTrack->Write(fHNClTrack->GetName(),TObject::kOverwrite); | |
3934 | ||
3935 | fHMinYPos->Write(fHMinYPos->GetName(),TObject::kOverwrite); | |
3936 | fHMinYNeg->Write(fHMinYNeg->GetName(),TObject::kOverwrite); | |
3937 | fHMinD->Write(fHMinD->GetName(),TObject::kOverwrite); | |
3938 | fHMinZ->Write(fHMinZ->GetName(),TObject::kOverwrite); | |
3939 | ||
3940 | fHDeltaX->Write(fHDeltaX->GetName(),TObject::kOverwrite); | |
3941 | fHXCl->Write(fHXCl->GetName(),TObject::kOverwrite); | |
7e448bcc | 3942 | |
0c349049 | 3943 | for (Int_t i = 0; i < 4; i++) { |
3944 | fHFindCl[i]->Write(fHFindCl[i]->GetName(),TObject::kOverwrite); | |
3945 | } | |
7e448bcc | 3946 | |
3947 | logFile->Flush(); | |
3948 | ||
3949 | sav->cd(); | |
7e448bcc | 3950 | |
0c349049 | 3951 | } |