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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 | // // |
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | ||
a2cb5b3d | 25 | #include <Riostream.h> |
46d29e70 | 26 | #include <TFile.h> |
46d29e70 | 27 | #include <TBranch.h> |
5443e65e | 28 | #include <TTree.h> |
c630aafd | 29 | #include <TObjArray.h> |
46d29e70 | 30 | |
46d29e70 | 31 | #include "AliTRDgeometry.h" |
a5cadd36 | 32 | #include "AliTRDpadPlane.h" |
0b2318ec | 33 | #include "AliTRDgeometry.h" |
46d29e70 | 34 | #include "AliTRDcluster.h" |
35 | #include "AliTRDtrack.h" | |
75bd7f81 | 36 | #include "AliTRDseed.h" |
6c94f330 | 37 | #include "AliESD.h" |
38 | ||
3551db50 | 39 | #include "AliTRDcalibDB.h" |
40 | #include "AliTRDCommonParam.h" | |
6c94f330 | 41 | |
42 | #include "TTreeStream.h" | |
43 | #include "TGraph.h" | |
46d29e70 | 44 | #include "AliTRDtracker.h" |
6c94f330 | 45 | #include "TLinearFitter.h" |
46 | #include "AliRieman.h" | |
47 | #include "AliTrackPointArray.h" | |
48 | #include "AliAlignObj.h" | |
7b580082 | 49 | #include "AliTRDReconstructor.h" |
46d29e70 | 50 | |
51 | ClassImp(AliTRDtracker) | |
bbf92647 | 52 | |
029cd327 | 53 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
029cd327 | 54 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; |
029cd327 | 55 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
75bd7f81 | 56 | const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // correspond to tan = 3 |
57 | const Double_t AliTRDtracker::fgkMaxStep = 2.; // maximal step size in propagation | |
7ad19338 | 58 | |
75bd7f81 | 59 | //_____________________________________________________________________________ |
6c94f330 | 60 | AliTRDtracker::AliTRDtracker(): |
61 | AliTracker(), | |
62 | fGeom(0), | |
63 | fNclusters(0), | |
64 | fClusters(0), | |
65 | fNseeds(0), | |
66 | fSeeds(0), | |
67 | fNtracks(0), | |
68 | fTracks(0), | |
69 | fTimeBinsPerPlane(0), | |
70 | fAddTRDseeds(kFALSE), | |
71 | fNoTilt(kFALSE), | |
72 | fDebugStreamer(0) | |
89f05372 | 73 | { |
75bd7f81 | 74 | // |
b7a0917f | 75 | // Default constructor |
75bd7f81 | 76 | // |
b7a0917f | 77 | |
6c94f330 | 78 | for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0; |
79 | for(Int_t j=0;j<5;j++) | |
80 | for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE; | |
75bd7f81 | 81 | |
89f05372 | 82 | } |
75bd7f81 | 83 | |
84 | //_____________________________________________________________________________ | |
6c94f330 | 85 | AliTRDtracker::AliTRDtracker(const AliTRDtracker &t) |
86 | :AliTracker(t) | |
ad670fba | 87 | ,fGeom(0) |
88 | ,fNclusters(0) | |
89 | ,fClusters(0) | |
90 | ,fNseeds(0) | |
91 | ,fSeeds(0) | |
92 | ,fNtracks(0) | |
93 | ,fTracks(0) | |
94 | ,fTimeBinsPerPlane(0) | |
95 | ,fAddTRDseeds(kFALSE) | |
96 | ,fNoTilt(kFALSE) | |
97 | ,fDebugStreamer(0) | |
6c94f330 | 98 | { |
ad670fba | 99 | // |
100 | // Copy constructor | |
101 | // | |
ad670fba | 102 | } |
103 | ||
104 | //_____________________________________________________________________________ | |
105 | AliTRDtracker::AliTRDtracker(const TFile *geomfile) | |
106 | :AliTracker() | |
107 | ,fGeom(0) | |
108 | ,fNclusters(0) | |
109 | ,fClusters(new TObjArray(2000)) | |
110 | ,fNseeds(0) | |
111 | ,fSeeds(new TObjArray(2000)) | |
112 | ,fNtracks(0) | |
113 | ,fTracks(new TObjArray(1000)) | |
114 | ,fTimeBinsPerPlane(0) | |
115 | ,fAddTRDseeds(kFALSE) | |
116 | ,fNoTilt(kFALSE) | |
117 | ,fDebugStreamer(0) | |
46d29e70 | 118 | { |
5443e65e | 119 | // |
120 | // Main constructor | |
121 | // | |
b8dc2353 | 122 | |
6c94f330 | 123 | TDirectory *savedir=gDirectory; |
124 | TFile *in=(TFile*)geomfile; | |
5443e65e | 125 | if (!in->IsOpen()) { |
6c94f330 | 126 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); |
127 | printf(" FULL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
5443e65e | 128 | } |
129 | else { | |
130 | in->cd(); | |
6c94f330 | 131 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
5443e65e | 132 | } |
46d29e70 | 133 | |
6c94f330 | 134 | if(fGeom) { |
135 | // printf("Found geometry version %d on file \n", fGeom->IsVersion()); | |
136 | } | |
137 | else { | |
138 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); | |
0b2318ec | 139 | fGeom = new AliTRDgeometry(); |
c630aafd | 140 | } |
c6f438c0 | 141 | fGeom->ReadGeoMatrices(); |
c630aafd | 142 | |
5443e65e | 143 | savedir->cd(); |
46d29e70 | 144 | |
6c94f330 | 145 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
029cd327 | 146 | Int_t trS = CookSectorIndex(geomS); |
6c94f330 | 147 | fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS); |
148 | for (Int_t icham=0;icham<AliTRDgeometry::kNcham; icham++){ | |
149 | fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS); | |
3c625a9b | 150 | } |
5443e65e | 151 | } |
3551db50 | 152 | AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0); |
7ad19338 | 153 | Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); |
6c94f330 | 154 | if(tiltAngle < 0.1) { |
b8dc2353 | 155 | fNoTilt = kTRUE; |
156 | } | |
157 | ||
59393e34 | 158 | fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
46d29e70 | 159 | |
6c94f330 | 160 | fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); |
0a29d0f1 | 161 | |
9c9d2487 | 162 | savedir->cd(); |
75bd7f81 | 163 | |
5443e65e | 164 | } |
46d29e70 | 165 | |
75bd7f81 | 166 | //_____________________________________________________________________________ |
5443e65e | 167 | AliTRDtracker::~AliTRDtracker() |
46d29e70 | 168 | { |
029cd327 | 169 | // |
170 | // Destructor of AliTRDtracker | |
171 | // | |
172 | ||
89f05372 | 173 | if (fClusters) { |
174 | fClusters->Delete(); | |
175 | delete fClusters; | |
176 | } | |
177 | if (fTracks) { | |
178 | fTracks->Delete(); | |
179 | delete fTracks; | |
180 | } | |
181 | if (fSeeds) { | |
182 | fSeeds->Delete(); | |
183 | delete fSeeds; | |
184 | } | |
5443e65e | 185 | delete fGeom; |
0a29d0f1 | 186 | |
029cd327 | 187 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
188 | delete fTrSec[geomS]; | |
5443e65e | 189 | } |
7ad19338 | 190 | if (fDebugStreamer) { |
6c94f330 | 191 | //fDebugStreamer->Close(); |
7ad19338 | 192 | delete fDebugStreamer; |
193 | } | |
9c9d2487 | 194 | |
75bd7f81 | 195 | } |
59393e34 | 196 | |
75bd7f81 | 197 | //_____________________________________________________________________________ |
198 | Int_t AliTRDtracker::LocalToGlobalID(Int_t lid) | |
199 | { | |
59393e34 | 200 | // |
75bd7f81 | 201 | // Transform internal TRD ID to global detector ID |
59393e34 | 202 | // |
75bd7f81 | 203 | |
6c94f330 | 204 | Int_t isector = fGeom->GetSector(lid); |
205 | Int_t ichamber= fGeom->GetChamber(lid); | |
206 | Int_t iplan = fGeom->GetPlane(lid); | |
59393e34 | 207 | // |
208 | AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1; | |
209 | switch (iplan) { | |
210 | case 0: | |
211 | iLayer = AliAlignObj::kTRD1; | |
212 | break; | |
213 | case 1: | |
214 | iLayer = AliAlignObj::kTRD2; | |
215 | break; | |
216 | case 2: | |
217 | iLayer = AliAlignObj::kTRD3; | |
218 | break; | |
219 | case 3: | |
220 | iLayer = AliAlignObj::kTRD4; | |
221 | break; | |
222 | case 4: | |
223 | iLayer = AliAlignObj::kTRD5; | |
224 | break; | |
225 | case 5: | |
226 | iLayer = AliAlignObj::kTRD6; | |
227 | break; | |
228 | }; | |
6c94f330 | 229 | Int_t modId = isector*fGeom->Ncham()+ichamber; |
59393e34 | 230 | UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId); |
75bd7f81 | 231 | |
59393e34 | 232 | return volid; |
75bd7f81 | 233 | |
59393e34 | 234 | } |
235 | ||
75bd7f81 | 236 | //_____________________________________________________________________________ |
237 | Int_t AliTRDtracker::GlobalToLocalID(Int_t gid) | |
238 | { | |
59393e34 | 239 | // |
75bd7f81 | 240 | // Transform global detector ID to local detector ID |
59393e34 | 241 | // |
75bd7f81 | 242 | |
6c94f330 | 243 | Int_t modId=0; |
244 | AliAlignObj::ELayerID layerId = AliAlignObj::VolUIDToLayer(gid, modId); | |
245 | Int_t isector = modId/fGeom->Ncham(); | |
246 | Int_t ichamber = modId%fGeom->Ncham(); | |
247 | Int_t iLayer = -1; | |
59393e34 | 248 | switch (layerId) { |
249 | case AliAlignObj::kTRD1: | |
6c94f330 | 250 | iLayer = 0; |
59393e34 | 251 | break; |
252 | case AliAlignObj::kTRD2: | |
6c94f330 | 253 | iLayer = 1; |
59393e34 | 254 | break; |
255 | case AliAlignObj::kTRD3: | |
6c94f330 | 256 | iLayer = 2; |
59393e34 | 257 | break; |
258 | case AliAlignObj::kTRD4: | |
6c94f330 | 259 | iLayer = 3; |
59393e34 | 260 | break; |
261 | case AliAlignObj::kTRD5: | |
6c94f330 | 262 | iLayer = 4; |
59393e34 | 263 | break; |
264 | case AliAlignObj::kTRD6: | |
6c94f330 | 265 | iLayer = 5; |
59393e34 | 266 | break; |
267 | default: | |
6c94f330 | 268 | iLayer =-1; |
59393e34 | 269 | } |
6c94f330 | 270 | if (iLayer<0) return -1; |
59393e34 | 271 | Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector); |
75bd7f81 | 272 | |
59393e34 | 273 | return lid; |
59393e34 | 274 | |
75bd7f81 | 275 | } |
59393e34 | 276 | |
75bd7f81 | 277 | //_____________________________________________________________________________ |
6c94f330 | 278 | Bool_t AliTRDtracker::Transform(AliTRDcluster * cluster) |
75bd7f81 | 279 | { |
59393e34 | 280 | // |
75bd7f81 | 281 | // Transform something ... whatever ... |
c6f438c0 | 282 | // |
75bd7f81 | 283 | |
6c94f330 | 284 | const Double_t kX0shift = 2.52; // magic constants for geo manager transformation |
285 | const Double_t kX0shift5 = 3.05; // | |
59393e34 | 286 | // |
59393e34 | 287 | // |
6c94f330 | 288 | // apply alignment and calibration to transform cluster |
289 | // | |
290 | // | |
291 | Int_t detector = cluster->GetDetector(); | |
292 | Int_t plane = fGeom->GetPlane(cluster->GetDetector()); | |
293 | Int_t chamber = fGeom->GetChamber(cluster->GetDetector()); | |
294 | Int_t sector = fGeom->GetSector(cluster->GetDetector()); | |
c6f438c0 | 295 | |
6c94f330 | 296 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
297 | Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance | |
59393e34 | 298 | // |
59393e34 | 299 | // ExB correction |
300 | // | |
301 | Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0); | |
6c94f330 | 302 | Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift); |
303 | // | |
304 | AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance(); | |
305 | AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber); | |
c6f438c0 | 306 | Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd()); |
6c94f330 | 307 | Double_t localPos[3], localPosTracker[3]; |
c6f438c0 | 308 | localPos[0] = -cluster->GetX(); |
309 | localPos[1] = cluster->GetY() - driftX*exB; | |
6c94f330 | 310 | localPos[2] = cluster->GetZ() -zshiftIdeal; |
311 | // | |
c6f438c0 | 312 | cluster->SetY(cluster->GetY() - driftX*exB); |
313 | Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane); | |
314 | cluster->SetX(xplane- cluster->GetX()); | |
6c94f330 | 315 | // |
316 | TGeoHMatrix * matrix = fGeom->GetCorrectionMatrix(cluster->GetDetector()); | |
c6f438c0 | 317 | if (!matrix){ |
6c94f330 | 318 | // no matrix found - if somebody used geometry with holes |
c6f438c0 | 319 | AliError("Invalid Geometry - Default Geometry used\n"); |
320 | return kTRUE; | |
321 | } | |
322 | matrix->LocalToMaster(localPos, localPosTracker); | |
6c94f330 | 323 | // |
324 | // | |
325 | // | |
326 | if (AliTRDReconstructor::StreamLevel()>1){ | |
327 | (*fDebugStreamer)<<"Transform"<< | |
328 | "Cl.="<<cluster<< | |
329 | "matrix.="<<matrix<< | |
330 | "Detector="<<detector<< | |
331 | "Sector="<<sector<< | |
332 | "Plane="<<plane<< | |
333 | "Chamber="<<chamber<< | |
334 | "lx0="<<localPosTracker[0]<< | |
335 | "ly0="<<localPosTracker[1]<< | |
336 | "lz0="<<localPosTracker[2]<< | |
337 | "\n"; | |
c6f438c0 | 338 | } |
6c94f330 | 339 | // |
340 | if (plane==5) | |
c6f438c0 | 341 | cluster->SetX(localPosTracker[0]+kX0shift5); |
6c94f330 | 342 | else |
c6f438c0 | 343 | cluster->SetX(localPosTracker[0]+kX0shift); |
6c94f330 | 344 | |
c6f438c0 | 345 | cluster->SetY(localPosTracker[1]); |
346 | cluster->SetZ(localPosTracker[2]); | |
75bd7f81 | 347 | |
59393e34 | 348 | return kTRUE; |
75bd7f81 | 349 | |
59393e34 | 350 | } |
351 | ||
75bd7f81 | 352 | //_____________________________________________________________________________ |
353 | // Bool_t AliTRDtracker::Transform(AliTRDcluster * cluster) | |
354 | //{ | |
c6f438c0 | 355 | // // |
356 | // // | |
357 | // const Double_t kDriftCorrection = 1.01; // drift coeficient correction | |
358 | // const Double_t kTime0Cor = 0.32; // time0 correction | |
359 | // // | |
360 | // const Double_t kX0shift = 2.52; | |
361 | // const Double_t kX0shift5 = 3.05; | |
362 | ||
363 | // // | |
364 | // // apply alignment and calibration to transform cluster | |
365 | // // | |
366 | // // | |
367 | // Int_t detector = cluster->GetDetector(); | |
368 | // Int_t plane = fGeom->GetPlane(cluster->GetDetector()); | |
369 | // Int_t chamber = fGeom->GetChamber(cluster->GetDetector()); | |
370 | // Int_t sector = fGeom->GetSector(cluster->GetDetector()); | |
371 | ||
372 | // Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
373 | // Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance | |
374 | // // | |
375 | // // ExB correction | |
376 | // // | |
377 | // Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0); | |
378 | // Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift); | |
379 | // // | |
380 | ||
381 | // AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance(); | |
382 | // AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber); | |
383 | // Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd()); | |
384 | // Double_t localPos[3], globalPos[3], localPosTracker[3], localPosTracker2[3]; | |
385 | // localPos[2] = -cluster->GetX(); | |
386 | // localPos[0] = cluster->GetY() - driftX*exB; | |
387 | // localPos[1] = cluster->GetZ() -zshiftIdeal; | |
388 | // TGeoHMatrix * matrix = fGeom->GetGeoMatrix(cluster->GetDetector()); | |
389 | // matrix->LocalToMaster(localPos, globalPos); | |
390 | ||
391 | // Double_t sectorAngle = 20.*(sector%18)+10; | |
392 | // TGeoHMatrix rotSector; | |
393 | // rotSector.RotateZ(sectorAngle); | |
394 | // rotSector.LocalToMaster(globalPos, localPosTracker); | |
395 | // // | |
396 | // // | |
397 | // TGeoHMatrix matrix2(*matrix); | |
398 | // matrix2.MultiplyLeft(&rotSector); | |
399 | // matrix2.LocalToMaster(localPos,localPosTracker2); | |
400 | // // | |
401 | // // | |
402 | // // | |
403 | // cluster->SetY(cluster->GetY() - driftX*exB); | |
404 | // Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane); | |
405 | // cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor)); | |
406 | // (*fDebugStreamer)<<"Transform"<< | |
407 | // "Cl.="<<cluster<< | |
408 | // "matrix.="<<matrix<< | |
409 | // "matrix2.="<<&matrix2<< | |
410 | // "Detector="<<detector<< | |
411 | // "Sector="<<sector<< | |
412 | // "Plane="<<plane<< | |
413 | // "Chamber="<<chamber<< | |
414 | // "lx0="<<localPosTracker[0]<< | |
415 | // "ly0="<<localPosTracker[1]<< | |
416 | // "lz0="<<localPosTracker[2]<< | |
417 | // "lx2="<<localPosTracker2[0]<< | |
418 | // "ly2="<<localPosTracker2[1]<< | |
419 | // "lz2="<<localPosTracker2[2]<< | |
420 | // "\n"; | |
421 | // // | |
422 | // if (plane==5) | |
423 | // cluster->SetX(localPosTracker[0]+kX0shift5); | |
424 | // else | |
425 | // cluster->SetX(localPosTracker[0]+kX0shift); | |
426 | ||
427 | // cluster->SetY(localPosTracker[1]); | |
428 | // cluster->SetZ(localPosTracker[2]); | |
429 | // return kTRUE; | |
430 | // } | |
431 | ||
75bd7f81 | 432 | //_____________________________________________________________________________ |
433 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) | |
434 | { | |
9c9d2487 | 435 | // |
436 | // Rotates the track when necessary | |
437 | // | |
438 | ||
439 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
6c94f330 | 440 | Double_t y = track->GetY(); |
441 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
9c9d2487 | 442 | |
c630aafd | 443 | //Int_t ns = AliTRDgeometry::kNsect; |
9c9d2487 | 444 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; |
445 | ||
6c94f330 | 446 | if (y > ymax) { |
9c9d2487 | 447 | //s = (s+1) % ns; |
6c94f330 | 448 | if (!track->Rotate(alpha)) return kFALSE; |
449 | } else if (y <-ymax) { | |
9c9d2487 | 450 | //s = (s-1+ns) % ns; |
6c94f330 | 451 | if (!track->Rotate(-alpha)) return kFALSE; |
9c9d2487 | 452 | } |
453 | ||
454 | return kTRUE; | |
9c9d2487 | 455 | |
75bd7f81 | 456 | } |
46e2d86c | 457 | |
75bd7f81 | 458 | //_____________________________________________________________________________ |
459 | AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane | |
460 | , Int_t timebin, UInt_t &index) | |
461 | { | |
46e2d86c | 462 | // |
75bd7f81 | 463 | // Try to find cluster in the backup list |
46e2d86c | 464 | // |
75bd7f81 | 465 | |
6c94f330 | 466 | AliTRDcluster * cl =0; |
467 | Int_t *indexes = track->GetBackupIndexes(); | |
468 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
469 | if (indexes[i]==0) break; | |
470 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
471 | if (!cli) break; | |
472 | if (cli->GetLocalTimeBin()!=timebin) continue; | |
46e2d86c | 473 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
6c94f330 | 474 | if (iplane==plane) { |
475 | cl = cli; | |
7ad19338 | 476 | index = indexes[i]; |
46e2d86c | 477 | break; |
478 | } | |
479 | } | |
75bd7f81 | 480 | |
46e2d86c | 481 | return cl; |
46e2d86c | 482 | |
75bd7f81 | 483 | } |
3c625a9b | 484 | |
75bd7f81 | 485 | //_____________________________________________________________________________ |
6c94f330 | 486 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track) |
75bd7f81 | 487 | { |
3c625a9b | 488 | // |
75bd7f81 | 489 | // Return last updated plane |
490 | // | |
491 | ||
6c94f330 | 492 | Int_t lastplane=0; |
493 | Int_t *indexes = track->GetBackupIndexes(); | |
494 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
495 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
496 | if (!cli) break; | |
3c625a9b | 497 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
6c94f330 | 498 | if (iplane>lastplane) { |
3c625a9b | 499 | lastplane = iplane; |
500 | } | |
501 | } | |
75bd7f81 | 502 | |
3c625a9b | 503 | return lastplane; |
75bd7f81 | 504 | |
3c625a9b | 505 | } |
75bd7f81 | 506 | |
507 | //_____________________________________________________________________________ | |
c630aafd | 508 | Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) |
509 | { | |
510 | // | |
511 | // Finds tracks within the TRD. The ESD event is expected to contain seeds | |
512 | // at the outer part of the TRD. The seeds | |
513 | // are found within the TRD if fAddTRDseeds is TRUE. | |
514 | // The tracks are propagated to the innermost time bin | |
515 | // of the TRD and the ESD event is updated | |
516 | // | |
517 | ||
6c94f330 | 518 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
029cd327 | 519 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
6c94f330 | 520 | Int_t nseed = 0; |
521 | Int_t found = 0; | |
522 | // Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
c630aafd | 523 | |
524 | Int_t n = event->GetNumberOfTracks(); | |
6c94f330 | 525 | for (Int_t i=0; i<n; i++) { |
526 | AliESDtrack* seed=event->GetTrack(i); | |
527 | ULong_t status=seed->GetStatus(); | |
528 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; | |
529 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; | |
c630aafd | 530 | nseed++; |
7ad19338 | 531 | |
6c94f330 | 532 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
46e2d86c | 533 | //seed2->ResetCovariance(); |
c630aafd | 534 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
6c94f330 | 535 | //AliTRDtrack *pt = new AliTRDtrack(*seed2); // !!! |
c630aafd | 536 | AliTRDtrack &t=*pt; |
7b580082 | 537 | FollowProlongation(t); |
c630aafd | 538 | if (t.GetNumberOfClusters() >= foundMin) { |
539 | UseClusters(&t); | |
6c94f330 | 540 | CookLabel(pt, 1-fgkLabelFraction); |
541 | // t.CookdEdx(); | |
c630aafd | 542 | } |
543 | found++; | |
6c94f330 | 544 | // cout<<found<<'\r'; |
c630aafd | 545 | |
59393e34 | 546 | Double_t xTPC = 250; |
547 | if (PropagateToX(t,xTPC,fgkMaxStep)) { | |
c630aafd | 548 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDin); |
549 | } | |
550 | delete seed2; | |
551 | delete pt; | |
552 | } | |
553 | ||
6c94f330 | 554 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
555 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
556 | ||
557 | // after tracks from loaded seeds are found and the corresponding | |
558 | // clusters are used, look for additional seeds from TRD | |
559 | ||
560 | ||
561 | cout<<"Total number of found tracks: "<<found<<endl; | |
c630aafd | 562 | |
563 | return 0; | |
75bd7f81 | 564 | |
c630aafd | 565 | } |
5443e65e | 566 | |
c630aafd | 567 | //_____________________________________________________________________________ |
6c94f330 | 568 | Int_t AliTRDtracker::PropagateBack(AliESD* event) |
75bd7f81 | 569 | { |
c630aafd | 570 | // |
571 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
572 | // backpropagated by the TPC tracker. Each seed is first propagated | |
573 | // to the TRD, and then its prolongation is searched in the TRD. | |
574 | // If sufficiently long continuation of the track is found in the TRD | |
575 | // the track is updated, otherwise it's stored as originaly defined | |
576 | // by the TPC tracker. | |
577 | // | |
578 | ||
6c94f330 | 579 | Int_t found=0; |
c5a8e3df | 580 | Float_t foundMin = 20; |
6c94f330 | 581 | Int_t n = event->GetNumberOfTracks(); |
582 | // | |
583 | //Sort tracks | |
584 | Float_t *quality =new Float_t[n]; | |
585 | Int_t *index =new Int_t[n]; | |
586 | for (Int_t i=0; i<n; i++) { | |
587 | AliESDtrack* seed=event->GetTrack(i); | |
4f1c04d3 | 588 | Double_t covariance[15]; |
589 | seed->GetExternalCovariance(covariance); | |
590 | quality[i] = covariance[0]+covariance[2]; | |
591 | } | |
592 | TMath::Sort(n,quality,index,kFALSE); | |
6c94f330 | 593 | // |
594 | for (Int_t i=0; i<n; i++) { | |
595 | // AliESDtrack* seed=event->GetTrack(i); | |
4f1c04d3 | 596 | AliESDtrack* seed=event->GetTrack(index[i]); |
597 | ||
6c94f330 | 598 | ULong_t status=seed->GetStatus(); |
599 | if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; | |
600 | if ( (status & AliESDtrack::kTRDout) != 0 ) continue; | |
c630aafd | 601 | |
602 | Int_t lbl = seed->GetLabel(); | |
603 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
604 | track->SetSeedLabel(lbl); | |
6c94f330 | 605 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); //make backup |
c630aafd | 606 | fNseeds++; |
6c94f330 | 607 | Float_t p4 = track->GetC(); |
608 | // | |
f6625211 | 609 | Int_t expectedClr = FollowBackProlongation(*track); |
6c94f330 | 610 | if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)<0.2 || TMath::Abs(track->GetPt())>0.8 ) { |
4f1c04d3 | 611 | // |
6c94f330 | 612 | //make backup for back propagation |
4f1c04d3 | 613 | // |
614 | Int_t foundClr = track->GetNumberOfClusters(); | |
615 | if (foundClr >= foundMin) { | |
616 | track->CookdEdx(); | |
8979685e | 617 | CookdEdxTimBin(*track); |
6c94f330 | 618 | CookLabel(track, 1-fgkLabelFraction); |
619 | if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack()); | |
620 | if(track->GetChi2()/track->GetNumberOfClusters()<4) { // sign only gold tracks | |
621 | if (seed->GetKinkIndex(0)==0&&TMath::Abs(track->GetPt())<1.5 ) UseClusters(track); | |
4f1c04d3 | 622 | } |
623 | Bool_t isGold = kFALSE; | |
624 | ||
6c94f330 | 625 | if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track |
626 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
627 | if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
4f1c04d3 | 628 | isGold = kTRUE; |
629 | } | |
6c94f330 | 630 | if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track |
631 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
632 | if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
f4e9508c | 633 | isGold = kTRUE; |
634 | } | |
6c94f330 | 635 | if (!isGold && track->GetBackupTrack()){ |
636 | if (track->GetBackupTrack()->GetNumberOfClusters()>foundMin&& | |
637 | (track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1))<7){ | |
638 | seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
4f1c04d3 | 639 | isGold = kTRUE; |
640 | } | |
641 | } | |
6c94f330 | 642 | if (track->StatusForTOF()>0 &&track->fNCross==0 && Float_t(track->fN)/Float_t(track->fNExpected)>0.4){ |
643 | //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
7ad19338 | 644 | } |
16d9fbba | 645 | } |
c630aafd | 646 | } |
8979685e | 647 | // Debug part of tracking |
6c94f330 | 648 | TTreeSRedirector& cstream = *fDebugStreamer; |
8979685e | 649 | Int_t eventNr = event->GetEventNumber(); |
6c94f330 | 650 | if (AliTRDReconstructor::StreamLevel()>0){ |
651 | if (track->GetBackupTrack()){ | |
652 | cstream<<"Tracks"<< | |
653 | "EventNr="<<eventNr<< | |
654 | "ESD.="<<seed<< | |
655 | "trd.="<<track<< | |
656 | "trdback.="<<track->GetBackupTrack()<< | |
657 | "\n"; | |
658 | }else{ | |
659 | cstream<<"Tracks"<< | |
660 | "EventNr="<<eventNr<< | |
661 | "ESD.="<<seed<< | |
662 | "trd.="<<track<< | |
663 | "trdback.="<<track<< | |
664 | "\n"; | |
d337ef8d | 665 | } |
8979685e | 666 | } |
6c94f330 | 667 | // |
668 | //Propagation to the TOF (I.Belikov) | |
669 | if (track->GetStop()==kFALSE){ | |
4f1c04d3 | 670 | |
6c94f330 | 671 | Double_t xtof=371.; |
672 | Double_t c2=track->GetSnp() + track->GetC()*(xtof - track->GetX()); | |
673 | if (TMath::Abs(c2)>=0.99) { | |
c5a8e3df | 674 | delete track; |
675 | continue; | |
676 | } | |
59393e34 | 677 | Double_t xTOF0 = 370. ; |
678 | PropagateToX(*track,xTOF0,fgkMaxStep); | |
6c94f330 | 679 | // |
680 | //energy losses taken to the account - check one more time | |
681 | c2=track->GetSnp() + track->GetC()*(xtof - track->GetX()); | |
682 | if (TMath::Abs(c2)>=0.99) { | |
4f1c04d3 | 683 | delete track; |
684 | continue; | |
685 | } | |
686 | ||
6c94f330 | 687 | // |
688 | Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); | |
689 | Double_t y; track->GetYAt(xtof,GetBz(),y); | |
690 | if (y > ymax) { | |
7ac6fa52 | 691 | if (!track->Rotate(AliTRDgeometry::GetAlpha())) { |
692 | delete track; | |
7bed16a7 | 693 | continue; |
7ac6fa52 | 694 | } |
6c94f330 | 695 | } else if (y <-ymax) { |
7ac6fa52 | 696 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { |
697 | delete track; | |
7bed16a7 | 698 | continue; |
7ac6fa52 | 699 | } |
3c625a9b | 700 | } |
701 | ||
702 | if (track->PropagateTo(xtof)) { | |
6c94f330 | 703 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
704 | for (Int_t i=0;i<AliESDtrack::kNPlane;i++) { | |
705 | for (Int_t j=0;j<AliESDtrack::kNSlice;j++) { | |
6d45eaef | 706 | seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j); |
707 | } | |
708 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
eab5961e | 709 | } |
6c94f330 | 710 | // seed->SetTRDtrack(new AliTRDtrack(*track)); |
711 | if (track->GetNumberOfClusters()>foundMin) found++; | |
3c625a9b | 712 | } |
6c94f330 | 713 | }else{ |
714 | if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ | |
715 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
16d9fbba | 716 | //seed->SetStatus(AliESDtrack::kTRDStop); |
6c94f330 | 717 | for (Int_t i=0;i<AliESDtrack::kNPlane;i++) { |
718 | for (Int_t j=0;j<AliESDtrack::kNSlice;j++) { | |
6d45eaef | 719 | seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j); |
720 | } | |
721 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
eab5961e | 722 | } |
7ad19338 | 723 | //seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b | 724 | found++; |
725 | } | |
1e9bb598 | 726 | } |
7ad19338 | 727 | seed->SetTRDQuality(track->StatusForTOF()); |
8979685e | 728 | seed->SetTRDBudget(track->fBudget[0]); |
729 | ||
d9b8978b | 730 | delete track; |
6c94f330 | 731 | // |
732 | //End of propagation to the TOF | |
733 | //if (foundClr>foundMin) | |
734 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
735 | ||
c630aafd | 736 | |
737 | } | |
ad670fba | 738 | |
6c94f330 | 739 | cerr<<"Number of seeds: "<<fNseeds<<endl; |
740 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
741 | ||
742 | if (AliTRDReconstructor::SeedingOn()) MakeSeedsMI(3,5,event); //new seeding | |
7ad19338 | 743 | |
6c94f330 | 744 | fSeeds->Clear(); fNseeds=0; |
4f1c04d3 | 745 | delete [] index; |
746 | delete [] quality; | |
747 | ||
1e9bb598 | 748 | return 0; |
749 | ||
750 | } | |
751 | ||
752 | //_____________________________________________________________________________ | |
6c94f330 | 753 | Int_t AliTRDtracker::RefitInward(AliESD* event) |
1e9bb598 | 754 | { |
755 | // | |
756 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
757 | // at the outer part of the TRD. | |
758 | // The tracks are propagated to the innermost time bin | |
759 | // of the TRD and the ESD event is updated | |
760 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
761 | // | |
762 | ||
6c94f330 | 763 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
1e9bb598 | 764 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
6c94f330 | 765 | Int_t nseed = 0; |
766 | Int_t found = 0; | |
767 | // Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
4f1c04d3 | 768 | AliTRDtrack seed2; |
6c94f330 | 769 | |
1e9bb598 | 770 | Int_t n = event->GetNumberOfTracks(); |
6c94f330 | 771 | for (Int_t i=0; i<n; i++) { |
772 | AliESDtrack* seed=event->GetTrack(i); | |
4f1c04d3 | 773 | new(&seed2) AliTRDtrack(*seed); |
6c94f330 | 774 | if (seed2.GetX()<270){ |
775 | seed->UpdateTrackParams(&seed2, AliESDtrack::kTRDbackup); // backup TPC track - only update | |
f4e9508c | 776 | continue; |
777 | } | |
778 | ||
6c94f330 | 779 | ULong_t status=seed->GetStatus(); |
780 | if ( (status & AliESDtrack::kTRDout ) == 0 ) { | |
0dd7d129 | 781 | continue; |
782 | } | |
6c94f330 | 783 | if ( (status & AliESDtrack::kTRDin) != 0 ) { |
0dd7d129 | 784 | continue; |
785 | } | |
6c94f330 | 786 | nseed++; |
787 | ||
788 | seed2.ResetCovariance(50.); | |
789 | ||
790 | // if (1/seed2.Get1Pt()>1.5&& seed2.GetX()>260.) { | |
791 | // Double_t oldx = seed2.GetX(); | |
792 | // seed2.PropagateTo(500.); | |
793 | // seed2.ResetCovariance(1.); | |
794 | // seed2.PropagateTo(oldx); | |
795 | // } | |
796 | // else{ | |
797 | // seed2.ResetCovariance(5.); | |
798 | // } | |
4f1c04d3 | 799 | |
800 | AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); | |
6c94f330 | 801 | //AliTRDtrack *pt = new AliTRDtrack(seed2); // !!! |
802 | Int_t * indexes2 = seed2.GetIndexes(); | |
803 | for (Int_t i=0;i<AliESDtrack::kNPlane;i++) { | |
804 | for (Int_t j=0;j<AliESDtrack::kNSlice;j++) { | |
6d45eaef | 805 | pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j); |
806 | } | |
7ad19338 | 807 | pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i); |
808 | } | |
eab5961e | 809 | |
6c94f330 | 810 | Int_t * indexes3 = pt->GetBackupIndexes(); |
811 | for (Int_t i=0;i<200;i++) { | |
812 | if (indexes2[i]==0) break; | |
46e2d86c | 813 | indexes3[i] = indexes2[i]; |
814 | } | |
815 | //AliTRDtrack *pt = seed2; | |
6c94f330 | 816 | AliTRDtrack &t=*pt; |
7b580082 | 817 | FollowProlongation(t); |
1e9bb598 | 818 | if (t.GetNumberOfClusters() >= foundMin) { |
6c94f330 | 819 | // UseClusters(&t); |
820 | //CookLabel(pt, 1-fgkLabelFraction); | |
7ad19338 | 821 | t.CookdEdx(); |
822 | CookdEdxTimBin(t); | |
1e9bb598 | 823 | } |
824 | found++; | |
6c94f330 | 825 | // cout<<found<<'\r'; |
59393e34 | 826 | Double_t xTPC = 250; |
6c94f330 | 827 | if(PropagateToX(t,xTPC,fgkMaxStep)) { |
828 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit); | |
829 | for (Int_t i=0;i<AliESDtrack::kNPlane;i++) { | |
830 | for (Int_t j=0;j<AliESDtrack::kNSlice;j++) { | |
6d45eaef | 831 | seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j); |
832 | } | |
7ad19338 | 833 | seed->SetTRDTimBin(pt->GetPIDTimBin(i),i); |
834 | } | |
6c94f330 | 835 | }else{ |
836 | //if not prolongation to TPC - propagate without update | |
837 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
7bed16a7 | 838 | seed2->ResetCovariance(5.); |
839 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); | |
6c94f330 | 840 | //AliTRDtrack *pt2 = new AliTRDtrack(*seed2); // !!! |
7bed16a7 | 841 | delete seed2; |
59393e34 | 842 | if (PropagateToX(*pt2,xTPC,fgkMaxStep)) { |
6c94f330 | 843 | //pt2->CookdEdx(0.,1.); |
844 | pt2->CookdEdx( ); // Modification by PS | |
eab5961e | 845 | CookdEdxTimBin(*pt2); |
6c94f330 | 846 | seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); |
847 | for (Int_t i=0;i<AliESDtrack::kNPlane;i++) { | |
848 | for (Int_t j=0;j<AliESDtrack::kNSlice;j++) { | |
6d45eaef | 849 | seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j); |
850 | } | |
7ad19338 | 851 | seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i); |
852 | } | |
eab5961e | 853 | } |
7bed16a7 | 854 | delete pt2; |
1e9bb598 | 855 | } |
1e9bb598 | 856 | delete pt; |
eab5961e | 857 | } |
1e9bb598 | 858 | |
6c94f330 | 859 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
860 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
1e9bb598 | 861 | |
c630aafd | 862 | return 0; |
863 | ||
864 | } | |
865 | ||
75bd7f81 | 866 | //_____________________________________________________________________________ |
6c94f330 | 867 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t) |
8979685e | 868 | { |
75bd7f81 | 869 | // |
8979685e | 870 | // Starting from current position on track=t this function tries |
871 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
872 | // if a close cluster is found. Returns the number of clusters | |
873 | // expected to be found in sensitive layers | |
874 | // GeoManager used to estimate mean density | |
75bd7f81 | 875 | // |
876 | ||
6c94f330 | 877 | Int_t sector; |
878 | Int_t lastplane = GetLastPlane(&t); | |
3551db50 | 879 | Double_t radLength = 0.0; |
6c94f330 | 880 | Double_t rho = 0.0; |
881 | Int_t expectedNumberOfClusters = 0; | |
882 | // | |
883 | // | |
884 | // | |
885 | for (Int_t iplane = lastplane; iplane>=0; iplane--){ | |
886 | // | |
887 | Int_t row0 = GetGlobalTimeBin(0, iplane,GetTimeBinsPerPlane()-1); | |
888 | Int_t rowlast = GetGlobalTimeBin(0, iplane,0); | |
8979685e | 889 | // |
6c94f330 | 890 | // propagate track close to the plane if neccessary |
7b580082 | 891 | // |
892 | Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX(); | |
6c94f330 | 893 | if (currentx < -fgkMaxStep +t.GetX()){ |
894 | //propagate closer to chamber - safety space fgkMaxStep | |
895 | if (!PropagateToX(t, currentx+fgkMaxStep, fgkMaxStep)) break; | |
8979685e | 896 | } |
8979685e | 897 | if (!AdjustSector(&t)) break; |
59393e34 | 898 | // |
6c94f330 | 899 | // get material budget |
8979685e | 900 | // |
6c94f330 | 901 | Double_t xyz0[3],xyz1[3],param[7],x,y,z; |
902 | t.GetXYZ(xyz0); //starting global position | |
903 | // end global position | |
7b580082 | 904 | x = fTrSec[0]->GetLayer(row0)->GetX(); |
905 | if (!t.GetProlongation(x,y,z)) break; | |
6c94f330 | 906 | xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha()); |
907 | xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha()); | |
908 | xyz1[2] = z; | |
7b580082 | 909 | AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param); |
6c94f330 | 910 | rho = param[0]; |
911 | radLength = param[1]; // get mean propagation parameters | |
8979685e | 912 | // |
6c94f330 | 913 | // propagate nad update |
8979685e | 914 | // |
8979685e | 915 | sector = t.GetSector(); |
6c94f330 | 916 | // for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) { |
917 | for (Int_t itime=0 ;itime<GetTimeBinsPerPlane();itime++) { | |
918 | Int_t ilayer = GetGlobalTimeBin(0, iplane,itime); | |
8979685e | 919 | expectedNumberOfClusters++; |
920 | t.fNExpected++; | |
6c94f330 | 921 | if (t.GetX()>345) t.fNExpectedLast++; |
922 | AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(ilayer)); | |
923 | AliTRDcluster *cl=0; | |
924 | UInt_t index=0; | |
925 | Double_t maxChi2=fgkMaxChi2; | |
8979685e | 926 | x = timeBin.GetX(); |
8979685e | 927 | if (timeBin) { |
6c94f330 | 928 | AliTRDcluster * cl0 = timeBin[0]; |
929 | if (!cl0) continue; // no clusters in given time bin | |
930 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); | |
931 | if (plane>lastplane) continue; | |
8979685e | 932 | Int_t timebin = cl0->GetLocalTimeBin(); |
6c94f330 | 933 | AliTRDcluster * cl2= GetCluster(&t,plane, timebin,index); |
934 | // | |
8979685e | 935 | if (cl2) { |
6c94f330 | 936 | cl =cl2; |
937 | //Double_t h01 = GetTiltFactor(cl); | |
938 | //maxChi2=t.GetPredictedChi2(cl,h01); | |
939 | // | |
940 | //if (t.GetLabel()==277) | |
941 | // printf("%e %e %x\n",t.GetX(),maxChi2,(UInt_t)cl); | |
942 | // | |
7b580082 | 943 | } |
8979685e | 944 | if (cl) { |
6c94f330 | 945 | // if (cl->GetNPads()<5) |
59393e34 | 946 | Double_t dxsample = timeBin.GetdX(); |
947 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
6c94f330 | 948 | Double_t h01 = GetTiltFactor(cl); |
949 | Int_t det = cl->GetDetector(); | |
950 | Int_t plane = fGeom->GetPlane(det); | |
951 | if (t.GetX()>345){ | |
8979685e | 952 | t.fNLast++; |
953 | t.fChi2Last+=maxChi2; | |
954 | } | |
59393e34 | 955 | Double_t xcluster = cl->GetX(); |
956 | t.PropagateTo(xcluster,radLength,rho); | |
6c94f330 | 957 | if (!AdjustSector(&t)) break; |
958 | maxChi2=t.GetPredictedChi2(cl,h01); | |
959 | ||
960 | if (t.GetLabel()==277) | |
961 | printf("%e %e %e %e\n",t.GetAlpha(),t.GetX(),t.GetY(),t.GetZ()); | |
962 | ||
963 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { | |
7b580082 | 964 | } |
6c94f330 | 965 | } |
8979685e | 966 | } |
6c94f330 | 967 | } |
8979685e | 968 | } |
8979685e | 969 | |
75bd7f81 | 970 | return expectedNumberOfClusters; |
69b55c55 | 971 | |
75bd7f81 | 972 | } |
7b580082 | 973 | |
75bd7f81 | 974 | //_____________________________________________________________________________ |
f6625211 | 975 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
8979685e | 976 | { |
75bd7f81 | 977 | // |
8979685e | 978 | // Starting from current radial position of track <t> this function |
979 | // extrapolates the track up to outer timebin and in the sensitive | |
980 | // layers confirms prolongation if a close cluster is found. | |
981 | // Returns the number of clusters expected to be found in sensitive layers | |
982 | // Use GEO manager for material Description | |
75bd7f81 | 983 | // |
59393e34 | 984 | |
6c94f330 | 985 | Int_t sector; |
986 | Int_t clusters[1000]; | |
987 | for (Int_t i=0;i<1000;i++) clusters[i]=-1; | |
988 | Double_t radLength = 0.0; | |
989 | Double_t rho = 0.0; | |
990 | Int_t expectedNumberOfClusters = 0; | |
991 | Float_t ratio0=0; | |
8979685e | 992 | AliTRDtracklet tracklet; |
6c94f330 | 993 | // |
994 | // | |
995 | for (Int_t iplane = 0; iplane<AliESDtrack::kNPlane; iplane++){ | |
996 | Int_t row0 = GetGlobalTimeBin(0, iplane,GetTimeBinsPerPlane()-1); | |
997 | Int_t rowlast = GetGlobalTimeBin(0, iplane,0); | |
998 | // | |
999 | Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX(); | |
1000 | if (currentx<t.GetX()) continue; | |
1001 | // | |
1002 | // propagate closer to chamber if neccessary | |
1003 | // | |
1004 | if (currentx > fgkMaxStep +t.GetX()){ | |
1005 | if (!PropagateToX(t, currentx-fgkMaxStep, fgkMaxStep)) break; | |
8979685e | 1006 | } |
8979685e | 1007 | if (!AdjustSector(&t)) break; |
59393e34 | 1008 | if (TMath::Abs(t.GetSnp())>fgkMaxSnp) break; |
8979685e | 1009 | // |
6c94f330 | 1010 | // get material budget inside of chamber |
59393e34 | 1011 | // |
6c94f330 | 1012 | Double_t xyz0[3],xyz1[3],param[7],x,y,z; |
1013 | t.GetXYZ(xyz0); //starting global position | |
1014 | // end global position | |
7b580082 | 1015 | x = fTrSec[0]->GetLayer(rowlast)->GetX(); |
1016 | if (!t.GetProlongation(x,y,z)) break; | |
6c94f330 | 1017 | xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha()); |
1018 | xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha()); | |
1019 | xyz1[2] = z; | |
7b580082 | 1020 | AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param); |
6c94f330 | 1021 | rho = param[0]; |
1022 | radLength = param[1]; // get mean propagation parameters | |
8979685e | 1023 | // |
7b580082 | 1024 | // Find clusters |
8979685e | 1025 | // |
6c94f330 | 1026 | sector = t.GetSector(); |
1027 | Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet); | |
1028 | if (tracklet.GetN()<GetTimeBinsPerPlane()/3) continue; | |
8979685e | 1029 | // |
7b580082 | 1030 | // Propagate and update track |
8979685e | 1031 | // |
6c94f330 | 1032 | for (Int_t itime= GetTimeBinsPerPlane()-1;itime>=0;itime--) { |
1033 | Int_t ilayer = GetGlobalTimeBin(0, iplane,itime); | |
8979685e | 1034 | expectedNumberOfClusters++; |
1035 | t.fNExpected++; | |
6c94f330 | 1036 | if (t.GetX()>345) t.fNExpectedLast++; |
1037 | AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(ilayer)); | |
1038 | AliTRDcluster *cl=0; | |
1039 | UInt_t index=0; | |
1040 | Double_t maxChi2=fgkMaxChi2; | |
8979685e | 1041 | x = timeBin.GetX(); |
6c94f330 | 1042 | // |
8979685e | 1043 | if (timeBin) { |
6c94f330 | 1044 | if (clusters[ilayer]>0) { |
8979685e | 1045 | index = clusters[ilayer]; |
1046 | cl = (AliTRDcluster*)GetCluster(index); | |
6c94f330 | 1047 | //Double_t h01 = GetTiltFactor(cl); |
1048 | //maxChi2=t.GetPredictedChi2(cl,h01); | |
1049 | // | |
1050 | //if (t.GetLabel()==277) | |
1051 | // printf("%e %e %x\n",t.GetX(),maxChi2,(UInt_t)cl); | |
1052 | // | |
8979685e | 1053 | } |
1054 | ||
1055 | if (cl) { | |
6c94f330 | 1056 | // if (cl->GetNPads()<5) |
59393e34 | 1057 | Double_t dxsample = timeBin.GetdX(); |
1058 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); | |
6c94f330 | 1059 | Double_t h01 = GetTiltFactor(cl); |
1060 | Int_t det = cl->GetDetector(); | |
1061 | Int_t plane = fGeom->GetPlane(det); | |
1062 | if (t.GetX()>345){ | |
8979685e | 1063 | t.fNLast++; |
6c94f330 | 1064 | t.fChi2Last+=maxChi2; |
8979685e | 1065 | } |
59393e34 | 1066 | Double_t xcluster = cl->GetX(); |
1067 | t.PropagateTo(xcluster,radLength,rho); | |
6c94f330 | 1068 | maxChi2=t.GetPredictedChi2(cl,h01); |
1069 | ||
1070 | if (t.GetLabel()==277) | |
1071 | printf("%e %e %e %e\n",t.GetAlpha(),t.GetX(),t.GetY(),t.GetZ()); | |
1072 | ||
8979685e | 1073 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
1074 | if(!t.Update(cl,maxChi2,index,h01)) { | |
8979685e | 1075 | } |
1076 | } | |
6c94f330 | 1077 | // |
1078 | // reset material budget if 2 consecutive gold | |
1079 | if (plane>0) | |
1080 | if (t.fTracklets[plane].GetN()+t.fTracklets[plane-1].GetN()>20){ | |
8979685e | 1081 | t.fBudget[2] = 0; |
1082 | } | |
6c94f330 | 1083 | } |
8979685e | 1084 | } |
59393e34 | 1085 | } |
6c94f330 | 1086 | ratio0 = ncl/Float_t(fTimeBinsPerPlane); |
1087 | Float_t ratio1 = Float_t(t.fN+1)/Float_t(t.fNExpected+1.); | |
1088 | if (tracklet.GetChi2()<18.&&ratio0>0.8 && ratio1>0.6 && ratio0+ratio1>1.5 && t.GetNCross()==0 && TMath::Abs(t.GetSnp())<0.85&&t.fN>20){ | |
1089 | t.MakeBackupTrack(); // make backup of the track until is gold | |
59393e34 | 1090 | } |
7b580082 | 1091 | |
8979685e | 1092 | } |
5443e65e | 1093 | |
75bd7f81 | 1094 | return expectedNumberOfClusters; |
1e9bb598 | 1095 | |
75bd7f81 | 1096 | } |
1e9bb598 | 1097 | |
75bd7f81 | 1098 | //_____________________________________________________________________________ |
6c94f330 | 1099 | Int_t AliTRDtracker::PropagateToX(AliTRDtrack& t, Double_t xToGo, Double_t maxStep) |
5443e65e | 1100 | { |
75bd7f81 | 1101 | // |
5443e65e | 1102 | // Starting from current radial position of track <t> this function |
1103 | // extrapolates the track up to radial position <xToGo>. | |
1104 | // Returns 1 if track reaches the plane, and 0 otherwise | |
75bd7f81 | 1105 | // |
1106 | ||
59393e34 | 1107 | const Double_t kEpsilon = 0.00001; |
6c94f330 | 1108 | // Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); |
1109 | Double_t xpos = t.GetX(); | |
1110 | Double_t dir = (xpos<xToGo) ? 1.:-1.; | |
1111 | // | |
1112 | while ( (xToGo-xpos)*dir > kEpsilon){ | |
1113 | Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
1114 | // | |
1115 | Double_t xyz0[3],xyz1[3],param[7],x,y,z; | |
1116 | t.GetXYZ(xyz0); //starting global position | |
1117 | x = xpos+step; | |
1118 | // | |
1119 | if (!t.GetProlongation(x,y,z)) return 0; // no prolongation | |
1120 | // | |
1121 | xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha()); | |
1122 | xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha()); | |
1123 | xyz1[2] = z; | |
1124 | // | |
59393e34 | 1125 | AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param); |
1126 | if (!t.PropagateTo(x,param[1],param[0])) return 0; | |
1127 | AdjustSector(&t); | |
1128 | xpos = t.GetX(); | |
5443e65e | 1129 | } |
75bd7f81 | 1130 | |
5443e65e | 1131 | return 1; |
5443e65e | 1132 | |
59393e34 | 1133 | } |
5443e65e | 1134 | |
c630aafd | 1135 | //_____________________________________________________________________________ |
1136 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1137 | { | |
75bd7f81 | 1138 | // |
c630aafd | 1139 | // Fills clusters into TRD tracking_sectors |
1140 | // Note that the numbering scheme for the TRD tracking_sectors | |
1141 | // differs from that of TRD sectors | |
75bd7f81 | 1142 | // |
1143 | ||
6c94f330 | 1144 | cout<<"\n Read Sectors clusters"<<endl; |
c630aafd | 1145 | if (ReadClusters(fClusters,cTree)) { |
6c94f330 | 1146 | Error("LoadClusters","Problem with reading the clusters !"); |
c630aafd | 1147 | return 1; |
1148 | } | |
6c94f330 | 1149 | Int_t ncl=fClusters->GetEntriesFast(); |
1150 | fNclusters=ncl; | |
1151 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; | |
c630aafd | 1152 | |
1153 | UInt_t index; | |
6c94f330 | 1154 | for (Int_t ichamber=0;ichamber<5;ichamber++) |
1155 | for (Int_t isector=0;isector<18;isector++){ | |
1156 | fHoles[ichamber][isector]=kTRUE; | |
3c625a9b | 1157 | } |
3c625a9b | 1158 | |
ad670fba | 1159 | |
6c94f330 | 1160 | while (ncl--) { |
1161 | // printf("\r %d left ",ncl); | |
1162 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); | |
1163 | Int_t detector=c->GetDetector(); | |
1164 | Int_t localTimeBin=c->GetLocalTimeBin(); | |
1165 | Int_t sector=fGeom->GetSector(detector); | |
1166 | Int_t plane=fGeom->GetPlane(detector); | |
1167 | ||
029cd327 | 1168 | Int_t trackingSector = CookSectorIndex(sector); |
6c94f330 | 1169 | if (c->GetLabel(0)>0){ |
3c625a9b | 1170 | Int_t chamber = fGeom->GetChamber(detector); |
6c94f330 | 1171 | fHoles[chamber][trackingSector]=kFALSE; |
3c625a9b | 1172 | } |
c630aafd | 1173 | |
6c94f330 | 1174 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
c630aafd | 1175 | if(gtb < 0) continue; |
029cd327 | 1176 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1177 | |
6c94f330 | 1178 | index=ncl; |
1179 | // | |
1180 | // apply pos correction | |
59393e34 | 1181 | Transform(c); |
029cd327 | 1182 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
c630aafd | 1183 | } |
75bd7f81 | 1184 | |
c630aafd | 1185 | return 0; |
75bd7f81 | 1186 | |
c630aafd | 1187 | } |
1188 | ||
5443e65e | 1189 | //_____________________________________________________________________________ |
b7a0917f | 1190 | void AliTRDtracker::UnloadClusters() |
5443e65e | 1191 | { |
1192 | // | |
1193 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1194 | // | |
1195 | ||
6c94f330 | 1196 | Int_t i, nentr; |
5443e65e | 1197 | |
1198 | nentr = fClusters->GetEntriesFast(); | |
6c94f330 | 1199 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); |
b7a0917f | 1200 | fNclusters = 0; |
5443e65e | 1201 | |
1202 | nentr = fSeeds->GetEntriesFast(); | |
6c94f330 | 1203 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); |
5443e65e | 1204 | |
1205 | nentr = fTracks->GetEntriesFast(); | |
6c94f330 | 1206 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); |
5443e65e | 1207 | |
1208 | Int_t nsec = AliTRDgeometry::kNsect; | |
6c94f330 | 1209 | |
5443e65e | 1210 | for (i = 0; i < nsec; i++) { |
1211 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1212 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | } | |
1217 | ||
75bd7f81 | 1218 | //_____________________________________________________________________________ |
69b55c55 | 1219 | void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESD * esd) |
7ad19338 | 1220 | { |
1221 | // | |
1222 | // Creates seeds using clusters between position inner plane and outer plane | |
1223 | // | |
75bd7f81 | 1224 | |
6c94f330 | 1225 | const Double_t kMaxTheta = 1; |
1226 | const Double_t kMaxPhi = 2.0; | |
1227 | // | |
1228 | const Double_t kRoad0y = 6; // road for middle cluster | |
1229 | const Double_t kRoad0z = 8.5; // road for middle cluster | |
1230 | // | |
1231 | const Double_t kRoad1y = 2; // road in y for seeded cluster | |
1232 | const Double_t kRoad1z = 20; // road in z for seeded cluster | |
1233 | // | |
1234 | const Double_t kRoad2y = 3; // road in y for extrapolated cluster | |
1235 | const Double_t kRoad2z = 20; // road in z for extrapolated cluster | |
c6f438c0 | 1236 | const Int_t kMaxSeed = 3000; |
6c94f330 | 1237 | Int_t maxSec=AliTRDgeometry::kNsect; |
7ad19338 | 1238 | |
6c94f330 | 1239 | // |
1240 | // linear fitters in planes | |
1241 | TLinearFitter fitterTC(2,"hyp2"); // fitting with tilting pads - kz fixed - kz= Z/x, + vertex const | |
1242 | TLinearFitter fitterT2(4,"hyp4"); // fitting with tilting pads - kz not fixed | |
69b55c55 | 1243 | fitterTC.StoreData(kTRUE); |
1244 | fitterT2.StoreData(kTRUE); | |
6c94f330 | 1245 | AliRieman rieman(1000); // rieman fitter |
1246 | AliRieman rieman2(1000); // rieman fitter | |
7ad19338 | 1247 | // |
6c94f330 | 1248 | // find the maximal and minimal layer for the planes |
7ad19338 | 1249 | // |
1250 | Int_t layers[6][2]; | |
6c94f330 | 1251 | AliTRDpropagationLayer* reflayers[6]; |
1252 | for (Int_t i=0;i<6;i++){layers[i][0]=10000; layers[i][1]=0;} | |
1253 | for (Int_t ns=0;ns<maxSec;ns++){ | |
1254 | for (Int_t ilayer=0;ilayer<fTrSec[ns]->GetNumberOfLayers();ilayer++){ | |
1255 | AliTRDpropagationLayer& layer=*(fTrSec[ns]->GetLayer(ilayer)); | |
1256 | if (layer==0) continue; | |
7ad19338 | 1257 | Int_t det = layer[0]->GetDetector(); |
1258 | Int_t plane = fGeom->GetPlane(det); | |
6c94f330 | 1259 | if (ilayer<layers[plane][0]) layers[plane][0] = ilayer; |
1260 | if (ilayer>layers[plane][1]) layers[plane][1] = ilayer; | |
7ad19338 | 1261 | } |
1262 | } | |
6c94f330 | 1263 | // |
3551db50 | 1264 | AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0); |
6c94f330 | 1265 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
1266 | Double_t hL[6]; // tilting angle | |
1267 | Double_t xcl[6]; // x - position of reference cluster | |
1268 | Double_t ycl[6]; // y - position of reference cluster | |
1269 | Double_t zcl[6]; // z - position of reference cluster | |
1270 | AliTRDcluster *cl[6]={0,0,0,0,0,0}; // seeding clusters | |
1271 | Float_t padlength[6]={10,10,10,10,10,10}; //current pad-length | |
1272 | Double_t chi2R =0, chi2Z=0; | |
1273 | Double_t chi2RF =0, chi2ZF=0; | |
1274 | // | |
1275 | Int_t nclusters; // total number of clusters | |
1276 | for (Int_t i=0;i<6;i++) {hL[i]=h01; if (i%2==1) hL[i]*=-1.;} | |
1277 | // | |
1278 | // | |
1279 | // registered seed | |
c6f438c0 | 1280 | AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6]; |
1281 | AliTRDseed *seed[kMaxSeed]; | |
6c94f330 | 1282 | for (Int_t iseed=0;iseed<kMaxSeed;iseed++) seed[iseed]= &pseed[iseed*6]; |
69b55c55 | 1283 | AliTRDseed *cseed = seed[0]; |
6c94f330 | 1284 | // |
1285 | Double_t seedquality[kMaxSeed]; | |
1286 | Double_t seedquality2[kMaxSeed]; | |
1287 | Double_t seedparams[kMaxSeed][7]; | |
1288 | Int_t seedlayer[kMaxSeed]; | |
1289 | Int_t registered =0; | |
1290 | Int_t sort[kMaxSeed]; | |
1291 | // | |
1292 | // seeding part | |
1293 | // | |
1294 | for (Int_t ns = 0; ns<maxSec; ns++){ //loop over sectors | |
1295 | //for (Int_t ns = 0; ns<5; ns++){ //loop over sectors | |
1296 | registered = 0; // reset registerd seed counter | |
1297 | cseed = seed[registered]; | |
1298 | Float_t iter=0; | |
1299 | for (Int_t sLayer=2; sLayer>=0;sLayer--){ | |
1300 | //for (Int_t dseed=5;dseed<15; dseed+=3){ //loop over central seeding time bins | |
1301 | iter+=1.; | |
1302 | Int_t dseed = 5+Int_t(iter)*3; | |
69b55c55 | 1303 | // Initialize seeding layers |
6c94f330 | 1304 | for (Int_t ilayer=0;ilayer<6;ilayer++){ |
69b55c55 | 1305 | reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed); |
1306 | xcl[ilayer] = reflayers[ilayer]->GetX(); | |
1307 | } | |
6c94f330 | 1308 | // |
1309 | Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2])*0.5; | |
1310 | AliTRDpropagationLayer& layer0=*reflayers[sLayer+0]; | |
1311 | AliTRDpropagationLayer& layer1=*reflayers[sLayer+1]; | |
1312 | AliTRDpropagationLayer& layer2=*reflayers[sLayer+2]; | |
1313 | AliTRDpropagationLayer& layer3=*reflayers[sLayer+3]; | |
1314 | // | |
1315 | Int_t maxn3 = layer3; | |
1316 | for (Int_t icl3=0;icl3<maxn3;icl3++){ | |
69b55c55 | 1317 | AliTRDcluster *cl3 = layer3[icl3]; |
1318 | if (!cl3) continue; | |
1319 | padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2()*12.); | |
1320 | ycl[sLayer+3] = cl3->GetY(); | |
1321 | zcl[sLayer+3] = cl3->GetZ(); | |
6c94f330 | 1322 | Float_t yymin0 = ycl[sLayer+3] - 1- kMaxPhi *(xcl[sLayer+3]-xcl[sLayer+0]); |
1323 | Float_t yymax0 = ycl[sLayer+3] + 1+ kMaxPhi *(xcl[sLayer+3]-xcl[sLayer+0]); | |
1324 | Int_t maxn0 = layer0; // | |
1325 | for (Int_t icl0=layer0.Find(yymin0);icl0<maxn0;icl0++){ | |
69b55c55 | 1326 | AliTRDcluster *cl0 = layer0[icl0]; |
1327 | if (!cl0) continue; | |
6c94f330 | 1328 | if (cl3->IsUsed()&&cl0->IsUsed()) continue; |
69b55c55 | 1329 | ycl[sLayer+0] = cl0->GetY(); |
1330 | zcl[sLayer+0] = cl0->GetZ(); | |
6c94f330 | 1331 | if ( ycl[sLayer+0]>yymax0) break; |
1332 | Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0])/(xcl[sLayer+3]-xcl[sLayer+0]); | |
1333 | if (TMath::Abs(tanphi)>kMaxPhi) continue; | |
1334 | Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0])/(xcl[sLayer+3]-xcl[sLayer+0]); | |
1335 | if (TMath::Abs(tantheta)>kMaxTheta) continue; | |
1336 | padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2()*12.); | |
1337 | // | |
1338 | // expected position in 1 layer | |
1339 | Double_t y1exp = ycl[sLayer+0]+(tanphi) *(xcl[sLayer+1]-xcl[sLayer+0]); | |
1340 | Double_t z1exp = zcl[sLayer+0]+(tantheta)*(xcl[sLayer+1]-xcl[sLayer+0]); | |
1341 | Float_t yymin1 = y1exp - kRoad0y-tanphi; | |
1342 | Float_t yymax1 = y1exp + kRoad0y+tanphi; | |
1343 | Int_t maxn1 = layer1; // | |
1344 | // | |
1345 | for (Int_t icl1=layer1.Find(yymin1);icl1<maxn1;icl1++){ | |
69b55c55 | 1346 | AliTRDcluster *cl1 = layer1[icl1]; |
1347 | if (!cl1) continue; | |
1348 | Int_t nusedCl = 0; | |
1349 | if (cl3->IsUsed()) nusedCl++; | |
1350 | if (cl0->IsUsed()) nusedCl++; | |
1351 | if (cl1->IsUsed()) nusedCl++; | |
6c94f330 | 1352 | if (nusedCl>1) continue; |
69b55c55 | 1353 | ycl[sLayer+1] = cl1->GetY(); |
1354 | zcl[sLayer+1] = cl1->GetZ(); | |
6c94f330 | 1355 | if ( ycl[sLayer+1]>yymax1) break; |
1356 | if (TMath::Abs(ycl[sLayer+1]-y1exp)>kRoad0y+tanphi) continue; | |
1357 | if (TMath::Abs(zcl[sLayer+1]-z1exp)>kRoad0z) continue; | |
69b55c55 | 1358 | padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2()*12.); |
6c94f330 | 1359 | // |
1360 | Double_t y2exp = ycl[sLayer+0]+(tanphi) *(xcl[sLayer+2]-xcl[sLayer+0])+(ycl[sLayer+1]-y1exp); | |
1361 | Double_t z2exp = zcl[sLayer+0]+(tantheta)*(xcl[sLayer+2]-xcl[sLayer+0]); | |
1362 | Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y, kRoad1z); | |
1363 | if (index2<=0) continue; | |
1364 | AliTRDcluster *cl2 = (AliTRDcluster*)GetCluster(index2); | |
1365 | padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2()*12.); | |
1366 | ycl[sLayer+2] = cl2->GetY(); | |
1367 | zcl[sLayer+2] = cl2->GetZ(); | |
1368 | if (TMath::Abs(cl2->GetZ()-z2exp)>kRoad0z) continue; | |
1369 | // | |
69b55c55 | 1370 | rieman.Reset(); |
1371 | rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10); | |
1372 | rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10); | |
1373 | rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10); | |
1374 | rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10); | |
1375 | rieman.Update(); | |
6c94f330 | 1376 | // |
1377 | // reset fitter | |
1378 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
69b55c55 | 1379 | cseed[iLayer].Reset(); |
1380 | } | |
6c94f330 | 1381 | chi2Z =0.; chi2R=0.; |
1382 | for (Int_t iLayer=0;iLayer<4;iLayer++){ | |
69b55c55 | 1383 | cseed[sLayer+iLayer].fZref[0] = rieman.GetZat(xcl[sLayer+iLayer]); |
6c94f330 | 1384 | chi2Z += (cseed[sLayer+iLayer].fZref[0]- zcl[sLayer+iLayer])* |
1385 | (cseed[sLayer+iLayer].fZref[0]- zcl[sLayer+iLayer]); | |
69b55c55 | 1386 | cseed[sLayer+iLayer].fZref[1] = rieman.GetDZat(xcl[sLayer+iLayer]); |
1387 | cseed[sLayer+iLayer].fYref[0] = rieman.GetYat(xcl[sLayer+iLayer]); | |
6c94f330 | 1388 | chi2R += (cseed[sLayer+iLayer].fYref[0]- ycl[sLayer+iLayer])* |
1389 | (cseed[sLayer+iLayer].fYref[0]- ycl[sLayer+iLayer]); | |
69b55c55 | 1390 | cseed[sLayer+iLayer].fYref[1] = rieman.GetDYat(xcl[sLayer+iLayer]); |
1391 | } | |
6c94f330 | 1392 | if (TMath::Sqrt(chi2R)>1./iter) continue; |
1393 | if (TMath::Sqrt(chi2Z)>7./iter) continue; | |
1394 | // | |
1395 | // | |
1396 | // | |
1397 | Float_t minmax[2]={-100,100}; | |
1398 | for (Int_t iLayer=0;iLayer<4;iLayer++){ | |
1399 | Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer]*0.5+1 -cseed[sLayer+iLayer].fZref[0]; | |
1400 | if (max<minmax[1]) minmax[1]=max; | |
1401 | Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer]*0.5-1 -cseed[sLayer+iLayer].fZref[0]; | |
1402 | if (min>minmax[0]) minmax[0]=min; | |
69b55c55 | 1403 | } |
1404 | Bool_t isFake = kFALSE; | |
6c94f330 | 1405 | if (cl0->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE; |
1406 | if (cl1->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE; | |
1407 | if (cl2->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE; | |
1408 | if (AliTRDReconstructor::StreamLevel()>0){ | |
1409 | if ((!isFake) || (icl3%10)==0 ){ //debugging print | |
1410 | TTreeSRedirector& cstream = *fDebugStreamer; | |
1411 | cstream<<"Seeds0"<< | |
1412 | "isFake="<<isFake<< | |
1413 | "Cl0.="<<cl0<< | |
1414 | "Cl1.="<<cl1<< | |
1415 | "Cl2.="<<cl2<< | |
1416 | "Cl3.="<<cl3<< | |
1417 | "Xref="<<xref<< | |
1418 | "X0="<<xcl[sLayer+0]<< | |
1419 | "X1="<<xcl[sLayer+1]<< | |
1420 | "X2="<<xcl[sLayer+2]<< | |
1421 | "X3="<<xcl[sLayer+3]<< | |
1422 | "Y2exp="<<y2exp<< | |
1423 | "Z2exp="<<z2exp<< | |
1424 | "Chi2R="<<chi2R<< | |
1425 | "Chi2Z="<<chi2Z<< | |
1426 | "Seed0.="<<&cseed[sLayer+0]<< | |
1427 | "Seed1.="<<&cseed[sLayer+1]<< | |
1428 | "Seed2.="<<&cseed[sLayer+2]<< | |
1429 | "Seed3.="<<&cseed[sLayer+3]<< | |
1430 | "Zmin="<<minmax[0]<< | |
1431 | "Zmax="<<minmax[1]<< | |
1432 | "\n"; | |
d337ef8d | 1433 | } |
69b55c55 | 1434 | } |
1435 | ||
6c94f330 | 1436 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
1437 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
1438 | //<<<<<<<<<<<<<<<<<< FIT SEEDING PART <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
1439 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
69b55c55 | 1440 | cl[sLayer+0] = cl0; |
1441 | cl[sLayer+1] = cl1; | |
1442 | cl[sLayer+2] = cl2; | |
1443 | cl[sLayer+3] = cl3; | |
6c94f330 | 1444 | Bool_t isOK=kTRUE; |
1445 | for (Int_t jLayer=0;jLayer<4;jLayer++){ | |
1446 | cseed[sLayer+jLayer].fTilt = hL[sLayer+jLayer]; | |
69b55c55 | 1447 | cseed[sLayer+jLayer].fPadLength = padlength[sLayer+jLayer]; |
6c94f330 | 1448 | cseed[sLayer+jLayer].fX0 = xcl[sLayer+jLayer]; |
1449 | for (Int_t iter=0; iter<2; iter++){ | |
69b55c55 | 1450 | // |
6c94f330 | 1451 | // in iteration 0 we try only one pad-row |
1452 | // if quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows | |
69b55c55 | 1453 | // |
1454 | AliTRDseed tseed = cseed[sLayer+jLayer]; | |
6c94f330 | 1455 | Float_t roadz = padlength[sLayer+jLayer]*0.5; |
1456 | if (iter>0) roadz = padlength[sLayer+jLayer]; | |
1457 | // | |
1458 | Float_t quality =10000; | |
1459 | for (Int_t iTime=2;iTime<20;iTime++){ | |
1460 | AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime)); | |
1461 | Double_t dxlayer= layer.GetX()-xcl[sLayer+jLayer]; | |
1462 | Double_t zexp = cl[sLayer+jLayer]->GetZ() ; | |
1463 | if (iter>0){ | |
1464 | // try 2 pad-rows in second iteration | |
1465 | zexp = tseed.fZref[0]+ tseed.fZref[1]*dxlayer; | |
1466 | if (zexp>cl[sLayer+jLayer]->GetZ()) zexp = cl[sLayer+jLayer]->GetZ()+padlength[sLayer+jLayer]*0.5; | |
1467 | if (zexp<cl[sLayer+jLayer]->GetZ()) zexp = cl[sLayer+jLayer]->GetZ()-padlength[sLayer+jLayer]*0.5; | |
69b55c55 | 1468 | } |
6c94f330 | 1469 | // |
1470 | Double_t yexp = tseed.fYref[0]+ | |
1471 | tseed.fYref[1]*dxlayer; | |
1472 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y, roadz); | |
1473 | if (index<=0) continue; | |
1474 | AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index); | |
1475 | // | |
69b55c55 | 1476 | tseed.fIndexes[iTime] = index; |
6c94f330 | 1477 | tseed.fClusters[iTime] = cl; // register cluster |
1478 | tseed.fX[iTime] = dxlayer; // register cluster | |
1479 | tseed.fY[iTime] = cl->GetY(); // register cluster | |
1480 | tseed.fZ[iTime] = cl->GetZ(); // register cluster | |
69b55c55 | 1481 | } |
1482 | tseed.Update(); | |
6c94f330 | 1483 | //count the number of clusters and distortions into quality |
1484 | Float_t dangle = tseed.fYfit[1]-tseed.fYref[1]; | |
1485 | Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+ | |
1486 | TMath::Abs(tseed.fYfit[0]-tseed.fYref[0])/0.2+ | |
1487 | 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer]; | |
1488 | if (iter==0 && tseed.IsOK()) { | |
69b55c55 | 1489 | cseed[sLayer+jLayer] = tseed; |
6c94f330 | 1490 | quality = tquality; |
1491 | if (tquality<5) break; | |
69b55c55 | 1492 | } |
6c94f330 | 1493 | if (tseed.IsOK() && tquality<quality) |
1494 | cseed[sLayer+jLayer] = tseed; | |
69b55c55 | 1495 | } |
6c94f330 | 1496 | if (!cseed[sLayer+jLayer].IsOK()){ |
69b55c55 | 1497 | isOK = kFALSE; |
1498 | break; | |
1499 | } | |
1500 | cseed[sLayer+jLayer].CookLabels(); | |
1501 | cseed[sLayer+jLayer].UpdateUsed(); | |
6c94f330 | 1502 | nusedCl+= cseed[sLayer+jLayer].fNUsed; |
1503 | if (nusedCl>25){ | |
69b55c55 | 1504 | isOK = kFALSE; |
1505 | break; | |
1506 | } | |
1507 | } | |
6c94f330 | 1508 | // |
69b55c55 | 1509 | if (!isOK) continue; |
6c94f330 | 1510 | nclusters=0; |
1511 | for (Int_t iLayer=0;iLayer<4;iLayer++){ | |
1512 | if (cseed[sLayer+iLayer].IsOK()){ | |
1513 | nclusters+=cseed[sLayer+iLayer].fN2; | |
69b55c55 | 1514 | } |
1515 | } | |
6c94f330 | 1516 | // |
1517 | // iteration 0 | |
69b55c55 | 1518 | rieman.Reset(); |
6c94f330 | 1519 | for (Int_t iLayer=0;iLayer<4;iLayer++){ |
1520 | rieman.AddPoint(xcl[sLayer+iLayer],cseed[sLayer+iLayer].fYfitR[0], | |
1521 | cseed[sLayer+iLayer].fZProb,1,10); | |
69b55c55 | 1522 | } |
1523 | rieman.Update(); | |
6c94f330 | 1524 | // |
1525 | // | |
1526 | chi2R =0; chi2Z=0; | |
1527 | for (Int_t iLayer=0;iLayer<4;iLayer++){ | |
69b55c55 | 1528 | cseed[sLayer+iLayer].fYref[0] = rieman.GetYat(xcl[sLayer+iLayer]); |
6c94f330 | 1529 | chi2R += (cseed[sLayer+iLayer].fYref[0]-cseed[sLayer+iLayer].fYfitR[0])* |
1530 | (cseed[sLayer+iLayer].fYref[0]-cseed[sLayer+iLayer].fYfitR[0]); | |
69b55c55 | 1531 | cseed[sLayer+iLayer].fYref[1] = rieman.GetDYat(xcl[sLayer+iLayer]); |
1532 | cseed[sLayer+iLayer].fZref[0] = rieman.GetZat(xcl[sLayer+iLayer]); | |
6c94f330 | 1533 | chi2Z += (cseed[sLayer+iLayer].fZref[0]- cseed[sLayer+iLayer].fMeanz)* |
1534 | (cseed[sLayer+iLayer].fZref[0]- cseed[sLayer+iLayer].fMeanz); | |
69b55c55 | 1535 | cseed[sLayer+iLayer].fZref[1] = rieman.GetDZat(xcl[sLayer+iLayer]); |
1536 | } | |
1537 | Double_t curv = rieman.GetC(); | |
1538 | // | |
6c94f330 | 1539 | // likelihoods |
69b55c55 | 1540 | // |
6c94f330 | 1541 | Double_t sumda = |
1542 | TMath::Abs(cseed[sLayer+0].fYfitR[1]- cseed[sLayer+0].fYref[1])+ | |
1543 | TMath::Abs(cseed[sLayer+1].fYfitR[1]- cseed[sLayer+1].fYref[1])+ | |
1544 | TMath::Abs(cseed[sLayer+2].fYfitR[1]- cseed[sLayer+2].fYref[1])+ | |
1545 | TMath::Abs(cseed[sLayer+3].fYfitR[1]- cseed[sLayer+3].fYref[1]); | |
1546 | Double_t likea = TMath::Exp(-sumda*10.6); | |
1547 | Double_t likechi2 = 0.0000000001; | |
1548 | if (chi2R<0.5) likechi2+=TMath::Exp(-TMath::Sqrt(chi2R)*7.73); | |
1549 | Double_t likechi2z = TMath::Exp(-chi2Z*0.088)/TMath::Exp(-chi2Z*0.019); | |
1550 | Double_t likeN = TMath::Exp(-(72-nclusters)*0.19); | |
1551 | Double_t like = likea*likechi2*likechi2z*likeN; | |
1552 | // | |
1553 | Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].fYref[1]-130*curv)*1.9); | |
1554 | Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].fZref[1]- | |
1555 | cseed[sLayer+0].fZref[0]/xcl[sLayer+0])*5.9); | |
1556 | Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005); | |
69b55c55 | 1557 | |
6c94f330 | 1558 | seedquality[registered] = like; |
1559 | seedlayer[registered] = sLayer; | |
1560 | if (TMath::Log(0.000000000000001+like)<-15) continue; | |
69b55c55 | 1561 | AliTRDseed seedb[6]; |
6c94f330 | 1562 | for (Int_t iLayer=0;iLayer<6;iLayer++){ |
69b55c55 | 1563 | seedb[iLayer] = cseed[iLayer]; |
1564 | } | |
ad670fba | 1565 | // |
6c94f330 | 1566 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
1567 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
1568 | //<<<<<<<<<<<<<<< FULL TRACK FIT PART <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
1569 | //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | |
69b55c55 | 1570 | // |
6c94f330 | 1571 | Int_t nlayers = 0; |
1572 | Int_t nusedf = 0; | |
1573 | Int_t findable = 0; | |
69b55c55 | 1574 | // |
6c94f330 | 1575 | // add new layers - avoid long extrapolation |
69b55c55 | 1576 | // |
6c94f330 | 1577 | Int_t tLayer[2]={0,0}; |
1578 | if (sLayer==2) {tLayer[0]=1; tLayer[1]=0;} | |
1579 | if (sLayer==1) {tLayer[0]=5; tLayer[1]=0;} | |
1580 | if (sLayer==0) {tLayer[0]=4; tLayer[1]=5;} | |
69b55c55 | 1581 | // |
6c94f330 | 1582 | for (Int_t iLayer=0;iLayer<2;iLayer++){ |
1583 | Int_t jLayer = tLayer[iLayer]; // set tracking layer | |
69b55c55 | 1584 | cseed[jLayer].Reset(); |
6c94f330 | 1585 | cseed[jLayer].fTilt = hL[jLayer]; |
69b55c55 | 1586 | cseed[jLayer].fPadLength = padlength[jLayer]; |
6c94f330 | 1587 | cseed[jLayer].fX0 = xcl[jLayer]; |
1588 | // get pad length and rough cluster | |
1589 | Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].fYref[0], | |
1590 | cseed[jLayer].fZref[0],kRoad2y,kRoad2z); | |
1591 | if (indexdummy<=0) continue; | |
1592 | AliTRDcluster *cldummy = (AliTRDcluster*)GetCluster(indexdummy); | |
1593 | padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2()*12.); | |
69b55c55 | 1594 | } |
6c94f330 | 1595 | AliTRDseed::FitRiemanTilt(cseed, kTRUE); |
1596 | // | |
1597 | for (Int_t iLayer=0;iLayer<2;iLayer++){ | |
1598 | Int_t jLayer = tLayer[iLayer]; // set tracking layer | |
1599 | if ( (jLayer==0) && !(cseed[1].IsOK())) continue; // break not allowed | |
1600 | if ( (jLayer==5) && !(cseed[4].IsOK())) continue; // break not allowed | |
69b55c55 | 1601 | Float_t zexp = cseed[jLayer].fZref[0]; |
6c94f330 | 1602 | Double_t zroad = padlength[jLayer]*0.5+1.; |
1603 | // | |
1604 | // | |
1605 | for (Int_t iter=0;iter<2;iter++){ | |
69b55c55 | 1606 | AliTRDseed tseed = cseed[jLayer]; |
6c94f330 | 1607 | Float_t quality = 10000; |
1608 | for (Int_t iTime=2;iTime<20;iTime++){ | |
1609 | AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime)); | |
1610 | Double_t dxlayer = layer.GetX()-xcl[jLayer]; | |
1611 | Double_t yexp = tseed.fYref[0]+tseed.fYref[1]*dxlayer; | |
1612 | Float_t yroad = kRoad1y; | |
1613 | Int_t index = layer.FindNearestCluster(yexp,zexp, yroad, zroad); | |
1614 | if (index<=0) continue; | |
1615 | AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index); | |
1616 | // | |
69b55c55 | 1617 | tseed.fIndexes[iTime] = index; |
6c94f330 | 1618 | tseed.fClusters[iTime] = cl; // register cluster |
1619 | tseed.fX[iTime] = dxlayer; // register cluster | |
1620 | tseed.fY[iTime] = cl->GetY(); // register cluster | |
1621 | tseed.fZ[iTime] = cl->GetZ(); // register cluster | |
69b55c55 | 1622 | } |
1623 | tseed.Update(); | |
6c94f330 | 1624 | if (tseed.IsOK()){ |
1625 | Float_t dangle = tseed.fYfit[1]-tseed.fYref[1]; | |
1626 | Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+ | |
1627 | TMath::Abs(tseed.fYfit[0]-tseed.fYref[0])/0.2+ | |
1628 | 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer]; | |
1629 | // | |
1630 | if (tquality<quality){ | |
1631 | cseed[jLayer]=tseed; | |
1632 | quality = tquality; | |
69b55c55 | 1633 | } |
1634 | } | |
6c94f330 | 1635 | zroad*=2.; |
69b55c55 | 1636 | } |
6c94f330 | 1637 | if ( cseed[jLayer].IsOK()){ |
69b55c55 | 1638 | cseed[jLayer].CookLabels(); |
1639 | cseed[jLayer].UpdateUsed(); | |
6c94f330 | 1640 | nusedf+= cseed[jLayer].fNUsed; |
1641 | AliTRDseed::FitRiemanTilt(cseed, kTRUE); | |
69b55c55 | 1642 | } |
1643 | } | |
6c94f330 | 1644 | // |
1645 | // | |
1646 | // make copy | |
69b55c55 | 1647 | AliTRDseed bseed[6]; |
6c94f330 | 1648 | for (Int_t jLayer=0;jLayer<6;jLayer++){ |
69b55c55 | 1649 | bseed[jLayer] = cseed[jLayer]; |
1650 | } | |
6c94f330 | 1651 | Float_t lastquality = 10000; |
1652 | Float_t lastchi2 = 10000; | |
1653 | Float_t chi2 = 1000; | |
69b55c55 | 1654 | |
6c94f330 | 1655 | // |
1656 | for (Int_t iter =0; iter<4;iter++){ | |
69b55c55 | 1657 | // |
6c94f330 | 1658 | // sort tracklets according "quality", try to "improve" 4 worst |
69b55c55 | 1659 | // |
6c94f330 | 1660 | Float_t sumquality = 0; |
69b55c55 | 1661 | Float_t squality[6]; |
1662 | Int_t sortindexes[6]; | |
6c94f330 | 1663 | for (Int_t jLayer=0;jLayer<6;jLayer++){ |
1664 | if (bseed[jLayer].IsOK()){ | |
69b55c55 | 1665 | AliTRDseed &tseed = bseed[jLayer]; |
6c94f330 | 1666 | Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]); |
1667 | Float_t dangle = tseed.fYfit[1]-tseed.fYref[1]; | |
1668 | Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+ | |
1669 | TMath::Abs(tseed.fYfit[0]-(tseed.fYref[0]-zcor))/0.2+ | |
1670 | 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer]; | |
1671 | squality[jLayer] = tquality; | |
ad670fba | 1672 | } |
6c94f330 | 1673 | else squality[jLayer]=-1; |
1674 | sumquality +=squality[jLayer]; | |
69b55c55 | 1675 | } |
1676 | ||
6c94f330 | 1677 | if (sumquality>=lastquality || chi2>lastchi2) break; |
69b55c55 | 1678 | lastquality = sumquality; |
1679 | lastchi2 = chi2; | |
6c94f330 | 1680 | if (iter>0){ |
1681 | for (Int_t jLayer=0;jLayer<6;jLayer++){ | |
69b55c55 | 1682 | cseed[jLayer] = bseed[jLayer]; |
1683 | } | |
1684 | } | |
1685 | TMath::Sort(6,squality,sortindexes,kFALSE); | |
6c94f330 | 1686 | // |
1687 | // | |
1688 | for (Int_t jLayer=5;jLayer>1;jLayer--){ | |
1689 | Int_t bLayer = sortindexes[jLayer]; | |
1690 | AliTRDseed tseed = bseed[bLayer]; | |
69b55c55 | 1691 | for (Int_t iTime=2;iTime<20;iTime++){ |
6c94f330 | 1692 | AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime)); |
1693 | Double_t dxlayer= layer.GetX()-xcl[bLayer]; | |
1694 | // | |
1695 | Double_t zexp = tseed.fZref[0]; | |
1696 | Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]); | |
1697 | // | |
1698 | Float_t roadz = padlength[bLayer]+1; | |
1699 | if (TMath::Abs(tseed.fZProb-zexp)> padlength[bLayer]*0.5) {roadz = padlength[bLayer]*0.5;} | |
1700 | if (tseed.fZfit[1]*tseed.fZref[1]<0) {roadz = padlength[bLayer]*0.5;} | |
1701 | if (TMath::Abs(tseed.fZProb-zexp)<0.1*padlength[bLayer]) { | |
1702 | zexp = tseed.fZProb; | |
1703 | roadz = padlength[bLayer]*0.5; | |
69b55c55 | 1704 | } |
6c94f330 | 1705 | // |
1706 | Double_t yexp = tseed.fYref[0]+ | |
1707 | tseed.fYref[1]*dxlayer-zcor; | |
1708 | Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y, roadz); | |
1709 | if (index<=0) continue; | |
1710 | AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index); | |
1711 | // | |
69b55c55 | 1712 | tseed.fIndexes[iTime] = index; |
6c94f330 | 1713 | tseed.fClusters[iTime] = cl; // register cluster |
1714 | tseed.fX[iTime] = dxlayer; // register cluster | |
1715 | tseed.fY[iTime] = cl->GetY(); // register cluster | |
1716 | tseed.fZ[iTime] = cl->GetZ(); // register cluster | |
69b55c55 | 1717 | } |
1718 | tseed.Update(); | |
c6f438c0 | 1719 | if (tseed.IsOK()) { |
6c94f330 | 1720 | Float_t dangle = tseed.fYfit[1]-tseed.fYref[1]; |
1721 | Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]); | |
1722 | // | |
1723 | Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+ | |
1724 | TMath::Abs(tseed.fYfit[0]-(tseed.fYref[0]-zcor))/0.2+ | |
1725 | 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer]; | |
1726 | // | |
1727 | if (tquality<squality[bLayer]) | |
69b55c55 | 1728 | bseed[bLayer] = tseed; |
1729 | } | |
1730 | } | |
6c94f330 | 1731 | chi2 = AliTRDseed::FitRiemanTilt(bseed, kTRUE); |
69b55c55 | 1732 | } |
6c94f330 | 1733 | // |
1734 | // | |
1735 | // | |
1736 | nclusters = 0; | |
1737 | nlayers = 0; | |
1738 | findable = 0; | |
1739 | for (Int_t iLayer=0;iLayer<6;iLayer++) { | |
1740 | if (TMath::Abs(cseed[iLayer].fYref[0]/cseed[iLayer].fX0)<0.15) | |
69b55c55 | 1741 | findable++; |
6c94f330 | 1742 | if (cseed[iLayer].IsOK()){ |
1743 | nclusters+=cseed[iLayer].fN2; | |
69b55c55 | 1744 | nlayers++; |
1745 | } | |
1746 | } | |
6c94f330 | 1747 | if (nlayers<3) continue; |
69b55c55 | 1748 | rieman.Reset(); |
6c94f330 | 1749 | for (Int_t iLayer=0;iLayer<6;iLayer++){ |
1750 | if (cseed[iLayer].IsOK()) rieman.AddPoint(xcl[iLayer],cseed[iLayer].fYfitR[0], | |
1751 | cseed[iLayer].fZProb,1,10); | |
69b55c55 | 1752 | } |
1753 | rieman.Update(); | |
6c94f330 | 1754 | // |
1755 | chi2RF =0; | |
1756 | chi2ZF =0; | |
1757 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
1758 | if (cseed[iLayer].IsOK()){ | |
69b55c55 | 1759 | cseed[iLayer].fYref[0] = rieman.GetYat(xcl[iLayer]); |
6c94f330 | 1760 | chi2RF += (cseed[iLayer].fYref[0]-cseed[iLayer].fYfitR[0])* |
1761 | (cseed[iLayer].fYref[0]-cseed[iLayer].fYfitR[0]); | |
69b55c55 | 1762 | cseed[iLayer].fYref[1] = rieman.GetDYat(xcl[iLayer]); |
1763 | cseed[iLayer].fZref[0] = rieman.GetZat(xcl[iLayer]); | |
6c94f330 | 1764 | chi2ZF += (cseed[iLayer].fZref[0]- cseed[iLayer].fMeanz)* |
1765 | (cseed[iLayer].fZref[0]- cseed[iLayer].fMeanz); | |
69b55c55 | 1766 | cseed[iLayer].fZref[1] = rieman.GetDZat(xcl[iLayer]); |
1767 | } | |
1768 | } | |
6c94f330 | 1769 | chi2RF/=TMath::Max((nlayers-3.),1.); |
1770 | chi2ZF/=TMath::Max((nlayers-3.),1.); | |
69b55c55 | 1771 | curv = rieman.GetC(); |
6c94f330 | 1772 | |
1773 | // | |
69b55c55 | 1774 | |
6c94f330 | 1775 | Double_t xref2 = (xcl[2]+xcl[3])*0.5; // middle of the chamber |
1776 | Double_t dzmf = rieman.GetDZat(xref2); | |
1777 | Double_t zmf = rieman.GetZat(xref2); | |
69b55c55 | 1778 | // |
6c94f330 | 1779 | // fit hyperplane |
69b55c55 | 1780 | // |
6c94f330 | 1781 | Int_t npointsT =0; |
69b55c55 | 1782 | fitterTC.ClearPoints(); |
1783 | fitterT2.ClearPoints(); | |
1784 | rieman2.Reset(); | |
6c94f330 | 1785 | for (Int_t iLayer=0; iLayer<6;iLayer++){ |
c6f438c0 | 1786 | if (!cseed[iLayer].IsOK()) continue; |
6c94f330 | 1787 | for (Int_t itime=0;itime<25;itime++){ |
69b55c55 | 1788 | if (!cseed[iLayer].fUsable[itime]) continue; |
6c94f330 | 1789 | Double_t x = cseed[iLayer].fX[itime]+cseed[iLayer].fX0-xref2; // x relative to the midle chamber |
1790 | Double_t y = cseed[iLayer].fY[itime]; | |
1791 | Double_t z = cseed[iLayer].fZ[itime]; | |
69b55c55 | 1792 | // ExB correction to the correction |
6c94f330 | 1793 | // tilted rieman |
1794 | // | |
69b55c55 | 1795 | Double_t uvt[6]; |
6c94f330 | 1796 | Double_t x2 = cseed[iLayer].fX[itime]+cseed[iLayer].fX0; // global x |
1797 | // | |
1798 | Double_t t = 1./(x2*x2+y*y); | |
1799 | uvt[1] = t; // t | |
1800 | uvt[0] = 2.*x2*uvt[1]; // u | |
1801 | // | |
1802 | uvt[2] = 2.0*hL[iLayer]*uvt[1]; | |
1803 | uvt[3] = 2.0*hL[iLayer]*x*uvt[1]; | |
1804 | uvt[4] = 2.0*(y+hL[iLayer]*z)*uvt[1]; | |
1805 | // | |
1806 | Double_t error = 2*0.2*uvt[1]; | |
69b55c55 | 1807 | fitterT2.AddPoint(uvt,uvt[4],error); |
1808 | // | |
6c94f330 | 1809 | // constrained rieman |
69b55c55 | 1810 | // |
6c94f330 | 1811 | z =cseed[iLayer].fZ[itime]; |
1812 | uvt[0] = 2.*x2*t; // u | |
1813 | uvt[1] = 2*hL[iLayer]*x2*uvt[1]; | |
1814 | uvt[2] = 2*(y+hL[iLayer]*(z-GetZ()))*t; | |
69b55c55 | 1815 | fitterTC.AddPoint(uvt,uvt[2],error); |
6c94f330 | 1816 | // |
69b55c55 | 1817 | rieman2.AddPoint(x2,y,z,1,10); |
1818 | npointsT++; | |
1819 | } | |
1820 | } | |
1821 | rieman2.Update(); | |
1822 | fitterTC.Eval(); | |
1823 | fitterT2.Eval(); | |
1824 | Double_t rpolz0 = fitterT2.GetParameter(3); | |
1825 | Double_t rpolz1 = fitterT2.GetParameter(4); | |
1826 | // | |
6c94f330 | 1827 | // linear fitter - not possible to make boundaries |
69b55c55 | 1828 | // non accept non possible z and dzdx combination |
1829 | // | |
6c94f330 | 1830 | Bool_t acceptablez =kTRUE; |
1831 | for (Int_t iLayer=0; iLayer<6;iLayer++){ | |
1832 | if (cseed[iLayer].IsOK()){ | |
1833 | Double_t zT2 = rpolz0+rpolz1*(xcl[iLayer] - xref2); | |
1834 | if (TMath::Abs(cseed[iLayer].fZProb-zT2)>padlength[iLayer]*0.5+1) | |
69b55c55 | 1835 | acceptablez = kFALSE; |
1836 | } | |
1837 | } | |
6c94f330 | 1838 | if (!acceptablez){ |
69b55c55 | 1839 | fitterT2.FixParameter(3,zmf); |
1840 | fitterT2.FixParameter(4,dzmf); | |
1841 | fitterT2.Eval(); | |
1842 | fitterT2.ReleaseParameter(3); | |
1843 | fitterT2.ReleaseParameter(4); | |
1844 | rpolz0 = fitterT2.GetParameter(3); | |
1845 | rpolz1 = fitterT2.GetParameter(4); | |
1846 | } | |
6c94f330 | 1847 | // |
1848 | Double_t chi2TR = fitterT2.GetChisquare()/Float_t(npointsT); | |
1849 | Double_t chi2TC = fitterTC.GetChisquare()/Float_t(npointsT); | |
1850 | // | |
69b55c55 | 1851 | Double_t polz1c = fitterTC.GetParameter(2); |
6c94f330 | 1852 | Double_t polz0c = polz1c*xref2; |
1853 | // | |
1854 | Double_t aC = fitterTC.GetParameter(0); | |
1855 | Double_t bC = fitterTC.GetParameter(1); | |
1856 | Double_t cC = aC/TMath::Sqrt(bC*bC+1.); // curvature | |
1857 | // | |
1858 | Double_t aR = fitterT2.GetParameter(0); | |
1859 | Double_t bR = fitterT2.GetParameter(1); | |
1860 | Double_t dR = fitterT2.GetParameter(2); | |
1861 | Double_t cR = 1+bR*bR-dR*aR; | |
1862 | Double_t dca = 0.; | |
1863 | if (cR>0){ | |
1864 | dca = -dR/(TMath::Sqrt(1+bR*bR-dR*aR)+TMath::Sqrt(1+bR*bR)); | |
1865 | cR = aR/TMath::Sqrt(cR); | |
69b55c55 | 1866 | } |
6c94f330 | 1867 | // |
1868 | Double_t chi2ZT2=0, chi2ZTC=0; | |
1869 | for (Int_t iLayer=0; iLayer<6;iLayer++){ | |
1870 | if (cseed[iLayer].IsOK()){ | |
1871 | Double_t zT2 = rpolz0+rpolz1*(xcl[iLayer] - xref2); | |
1872 | Double_t zTC = polz0c+polz1c*(xcl[iLayer] - xref2); | |
1873 | chi2ZT2 += TMath::Abs(cseed[iLayer].fMeanz-zT2); | |
1874 | chi2ZTC += TMath::Abs(cseed[iLayer].fMeanz-zTC); | |
69b55c55 | 1875 | } |
1876 | } | |
6c94f330 | 1877 | chi2ZT2/=TMath::Max((nlayers-3.),1.); |
1878 | chi2ZTC/=TMath::Max((nlayers-3.),1.); | |
1879 | // | |
1880 | // | |
1881 | // | |
1882 | AliTRDseed::FitRiemanTilt(cseed, kTRUE); | |
1883 | Float_t sumdaf = 0; | |
1884 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
1885 | if (cseed[iLayer].IsOK()) | |
1886 | sumdaf += TMath::Abs((cseed[iLayer].fYfit[1]-cseed[iLayer].fYref[1])/cseed[iLayer].fSigmaY2); | |
69b55c55 | 1887 | } |
6c94f330 | 1888 | sumdaf /= Float_t (nlayers-2.); |
69b55c55 | 1889 | // |
6c94f330 | 1890 | // likelihoods for full track |
69b55c55 | 1891 | // |
6c94f330 | 1892 | Double_t likezf = TMath::Exp(-chi2ZF*0.14); |
1893 | Double_t likechi2C = TMath::Exp(-chi2TC*0.677); | |
1894 | Double_t likechi2TR = TMath::Exp(-chi2TR*0.78); | |
1895 | Double_t likeaf = TMath::Exp(-sumdaf*3.23); | |
1896 | seedquality2[registered] = likezf*likechi2TR*likeaf; | |
69b55c55 | 1897 | // Bool_t isGold = kFALSE; |
1898 | // | |
6c94f330 | 1899 | // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold |
1900 | // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold | |
69b55c55 | 1901 | // if (isGold &&nusedf<10){ |
1902 | // for (Int_t jLayer=0;jLayer<6;jLayer++){ | |
6c94f330 | 1903 | // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1) |
69b55c55 | 1904 | // seed[index][jLayer].UseClusters(); //sign gold |
1905 | // } | |
1906 | // } | |
6c94f330 | 1907 | // |
1908 | // | |
1909 | // | |
1910 | Int_t index0=0; | |
1911 | if (!cseed[0].IsOK()){ | |
69b55c55 | 1912 | index0 = 1; |
6c94f330 | 1913 | if (!cseed[1].IsOK()) index0 = 2; |
69b55c55 | 1914 | } |
1915 | seedparams[registered][0] = cseed[index0].fX0; | |
1916 | seedparams[registered][1] = cseed[index0].fYref[0]; | |
1917 | seedparams[registered][2] = cseed[index0].fZref[0]; | |
c6f438c0 | 1918 | seedparams[registered][5] = cR; |
6c94f330 | 1919 | seedparams[registered][3] = cseed[index0].fX0*cR - TMath::Sin(TMath::ATan(cseed[0].fYref[1])); |
1920 | seedparams[registered][4] = cseed[index0].fZref[1]/ | |
1921 | TMath::Sqrt(1+cseed[index0].fYref[1]*cseed[index0].fYref[1]); | |
69b55c55 | 1922 | seedparams[registered][6] = ns; |
6c94f330 | 1923 | // |
1924 | // | |
1925 | Int_t labels[12], outlab[24]; | |
1926 | Int_t nlab=0; | |
1927 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
c6f438c0 | 1928 | if (!cseed[iLayer].IsOK()) continue; |
6c94f330 | 1929 | if (cseed[iLayer].fLabels[0]>=0) { |
69b55c55 | 1930 | labels[nlab] = cseed[iLayer].fLabels[0]; |
1931 | nlab++; | |
1932 | } | |
6c94f330 | 1933 | if (cseed[iLayer].fLabels[1]>=0) { |
69b55c55 | 1934 | labels[nlab] = cseed[iLayer].fLabels[1]; |
1935 | nlab++; | |
1936 | } | |
1937 | } | |
1938 | Freq(nlab,labels,outlab,kFALSE); | |
6c94f330 | 1939 | Int_t label = outlab[0]; |
1940 | Int_t frequency = outlab[1]; | |
1941 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
69b55c55 | 1942 | cseed[iLayer].fFreq = frequency; |
c6f438c0 | 1943 | cseed[iLayer].fC = cR; |
6c94f330 | 1944 | cseed[iLayer].fCC = cC; |
69b55c55 | 1945 | cseed[iLayer].fChi2 = chi2TR; |
1946 | cseed[iLayer].fChi2Z = chi2ZF; | |
1947 | } | |
6c94f330 | 1948 | // |
1949 | if (1||(!isFake)){ //debugging print | |
69b55c55 | 1950 | Float_t zvertex = GetZ(); |
6c94f330 | 1951 | TTreeSRedirector& cstream = *fDebugStreamer; |
1952 | if (AliTRDReconstructor::StreamLevel()>0) | |
1953 | cstream<<"Seeds1"<< | |
1954 | "isFake="<<isFake<< | |
1955 | "Vertex="<<zvertex<< | |
1956 | "Rieman2.="<<&rieman2<< | |
1957 | "Rieman.="<<&rieman<< | |
1958 | "Xref="<<xref<< | |
1959 | "X0="<<xcl[0]<< | |
1960 | "X1="<<xcl[1]<< | |
1961 | "X2="<<xcl[2]<< | |
1962 | "X3="<<xcl[3]<< | |
1963 | "X4="<<xcl[4]<< | |
1964 | "X5="<<xcl[5]<< | |
1965 | "Chi2R="<<chi2R<< | |
1966 | "Chi2Z="<<chi2Z<< | |
1967 | "Chi2RF="<<chi2RF<< //chi2 of trackletes on full track | |
1968 | "Chi2ZF="<<chi2ZF<< //chi2 z on tracklets on full track | |
1969 | "Chi2ZT2="<<chi2ZT2<< //chi2 z on tracklets on full track - rieman tilt | |
1970 | "Chi2ZTC="<<chi2ZTC<< //chi2 z on tracklets on full track - rieman tilt const | |
1971 | // | |
1972 | "Chi2TR="<<chi2TR<< //chi2 without vertex constrain | |
1973 | "Chi2TC="<<chi2TC<< //chi2 with vertex constrain | |
1974 | "C="<<curv<< // non constrained - no tilt correction | |
1975 | "DR="<<dR<< // DR parameter - tilt correction | |
1976 | "DCA="<<dca<< // DCA - tilt correction | |
1977 | "CR="<<cR<< // non constrained curvature - tilt correction | |
1978 | "CC="<<cC<< // constrained curvature | |
1979 | "Polz0="<<polz0c<< | |
1980 | "Polz1="<<polz1c<< | |
1981 | "RPolz0="<<rpolz0<< | |
1982 | "RPolz1="<<rpolz1<< | |
1983 | "Ncl="<<nclusters<< | |
1984 | "Nlayers="<<nlayers<< | |
1985 | "NUsedS="<<nusedCl<< | |
1986 | "NUsed="<<nusedf<< | |
1987 | "Findable="<<findable<< | |
1988 | "Like="<<like<< | |
1989 | "LikePrim="<<likePrim<< | |
1990 | "Likechi2C="<<likechi2C<< | |
1991 | "Likechi2TR="<<likechi2TR<< | |
1992 | "Likezf="<<likezf<< | |
1993 | "LikeF="<<seedquality2[registered]<< | |
1994 | "S0.="<<&cseed[0]<< | |
1995 | "S1.="<<&cseed[1]<< | |
1996 | "S2.="<<&cseed[2]<< | |
1997 | "S3.="<<&cseed[3]<< | |
1998 | "S4.="<<&cseed[4]<< | |
1999 | "S5.="<<&cseed[5]<< | |
2000 | "SB0.="<<&seedb[0]<< | |
2001 | "SB1.="<<&seedb[1]<< | |
2002 | "SB2.="<<&seedb[2]<< | |
2003 | "SB3.="<<&seedb[3]<< | |
2004 | "SB4.="<<&seedb[4]<< | |
2005 | "SB5.="<<&seedb[5]<< | |
2006 | "Label="<<label<< | |
2007 | "Freq="<<frequency<< | |
2008 | "sLayer="<<sLayer<< | |
2009 | "\n"; | |
69b55c55 | 2010 | } |
6c94f330 | 2011 | if (registered<kMaxSeed-1) { |
69b55c55 | 2012 | registered++; |
2013 | cseed = seed[registered]; | |
2014 | } | |
6c94f330 | 2015 | }// end of loop over layer 1 |
2016 | } // end of loop over layer 0 | |
2017 | } // end of loop over layer 3 | |
2018 | } // end of loop over seeding time bins | |
69b55c55 | 2019 | // |
6c94f330 | 2020 | // choos best |
69b55c55 | 2021 | // |
2022 | TMath::Sort(registered,seedquality2,sort,kTRUE); | |
c6f438c0 | 2023 | Bool_t signedseed[kMaxSeed]; |
6c94f330 | 2024 | for (Int_t i=0;i<registered;i++){ |
2025 | signedseed[i]= kFALSE; | |
69b55c55 | 2026 | } |
6c94f330 | 2027 | for (Int_t iter=0; iter<5; iter++){ |
2028 | for (Int_t iseed=0;iseed<registered;iseed++){ | |
69b55c55 | 2029 | Int_t index = sort[iseed]; |
2030 | if (signedseed[index]) continue; | |
2031 | Int_t labelsall[1000]; | |
6c94f330 | 2032 | Int_t nlabelsall=0; |
2033 | Int_t naccepted=0;; | |
2034 | Int_t sLayer = seedlayer[index]; | |
2035 | Int_t ncl = 0; | |
2036 | Int_t nused = 0; | |
2037 | Int_t nlayers =0; | |
69b55c55 | 2038 | Int_t findable = 0; |
6c94f330 | 2039 | for (Int_t jLayer=0;jLayer<6;jLayer++){ |
2040 | if (TMath::Abs(seed[index][jLayer].fYref[0]/xcl[jLayer])<0.15) | |
69b55c55 | 2041 | findable++; |
6c94f330 | 2042 | if (seed[index][jLayer].IsOK()){ |
69b55c55 | 2043 | seed[index][jLayer].UpdateUsed(); |
6c94f330 | 2044 | ncl +=seed[index][jLayer].fN2; |
2045 | nused +=seed[index][jLayer].fNUsed; | |
69b55c55 | 2046 | nlayers++; |
6c94f330 | 2047 | //cooking label |
2048 | for (Int_t itime=0;itime<25;itime++){ | |
2049 | if (seed[index][jLayer].fUsable[itime]){ | |
69b55c55 | 2050 | naccepted++; |
6c94f330 | 2051 | for (Int_t ilab=0;ilab<3;ilab++){ |
69b55c55 | 2052 | Int_t tindex = seed[index][jLayer].fClusters[itime]->GetLabel(ilab); |
6c94f330 | 2053 | if (tindex>=0){ |
69b55c55 | 2054 | labelsall[nlabelsall] = tindex; |
2055 | nlabelsall++; | |
2056 | } | |
2057 | } | |
2058 | } | |
2059 | } | |
2060 | } | |
2061 | } | |
6c94f330 | 2062 | // |
2063 | if (nused>30) continue; | |
2064 | // | |
2065 | if (iter==0){ | |
2066 | if (nlayers<6) continue; | |
2067 | if (TMath::Log(0.000000001+seedquality2[index])<-5.) continue; // gold | |
69b55c55 | 2068 | } |
6c94f330 | 2069 | // |
2070 | if (iter==1){ | |
2071 | if (nlayers<findable) continue; | |
2072 | if (TMath::Log(0.000000001+seedquality2[index])<-4.) continue; // | |
7ad19338 | 2073 | } |
6c94f330 | 2074 | // |
2075 | // | |
2076 | if (iter==2){ | |
2077 | if (nlayers==findable || nlayers==6) continue; | |
2078 | if (TMath::Log(0.000000001+seedquality2[index])<-6.) continue; | |
69b55c55 | 2079 | } |
6c94f330 | 2080 | // |
2081 | if (iter==3){ | |
2082 | if (TMath::Log(0.000000001+seedquality2[index])<-5.) continue; | |
69b55c55 | 2083 | } |
6c94f330 | 2084 | // |
2085 | if (iter==4){ | |
2086 | if (TMath::Log(0.000000001+seedquality2[index])-nused/(nlayers-3.)<-15.) continue; | |
69b55c55 | 2087 | } |
6c94f330 | 2088 | // |
69b55c55 | 2089 | signedseed[index] = kTRUE; |
6c94f330 | 2090 | // |
2091 | Int_t labels[1000], outlab[1000]; | |
2092 | Int_t nlab=0; | |
2093 | for (Int_t iLayer=0;iLayer<6;iLayer++){ | |
2094 | if (seed[index][iLayer].IsOK()){ | |
2095 | if (seed[index][iLayer].fLabels[0]>=0) { | |
69b55c55 | 2096 | labels[nlab] = seed[index][iLayer].fLabels[0]; |
2097 | nlab++; | |
2098 | } | |
6c94f330 | 2099 | if (seed[index][iLayer].fLabels[1]>=0) { |
69b55c55 | 2100 | labels[nlab] = seed[index][iLayer].fLabels[1]; |
2101 | nlab++; | |
2102 | } | |
2103 | } | |
7ad19338 | 2104 | } |
69b55c55 | 2105 | Freq(nlab,labels,outlab,kFALSE); |
6c94f330 | 2106 | Int_t label = outlab[0]; |
2107 | Int_t frequency = outlab[1]; | |
69b55c55 | 2108 | Freq(nlabelsall,labelsall,outlab,kFALSE); |
6c94f330 | 2109 | Int_t label1 = outlab[0]; |
2110 | Int_t label2 = outlab[2]; | |
2111 | Float_t fakeratio = (naccepted-outlab[1])/Float_t(naccepted); | |
2112 | Float_t ratio = Float_t(nused)/Float_t(ncl); | |
2113 | if (ratio<0.25){ | |
2114 | for (Int_t jLayer=0;jLayer<6;jLayer++){ | |
2115 | if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.2 ) | |
2116 | seed[index][jLayer].UseClusters(); //sign gold | |
69b55c55 | 2117 | } |
7ad19338 | 2118 | } |
6c94f330 | 2119 | // |
69b55c55 | 2120 | Int_t eventNr = esd->GetEventNumber(); |
6c94f330 | 2121 | TTreeSRedirector& cstream = *fDebugStreamer; |
69b55c55 | 2122 | // |
6c94f330 | 2123 | // register seed |
69b55c55 | 2124 | // |
6c94f330 | 2125 | AliTRDtrack * track = RegisterSeed(seed[index],seedparams[index]); |
2126 | AliTRDtrack dummy; | |
2127 | if (!track) track=&dummy; | |
2128 | else{ | |
69b55c55 | 2129 | AliESDtrack esdtrack; |
6c94f330 | 2130 | esdtrack.UpdateTrackParams(track, AliESDtrack::kTRDout); |
69b55c55 | 2131 | esdtrack.SetLabel(label); |
2132 | esd->AddTrack(&esdtrack); | |
6c94f330 | 2133 | TTreeSRedirector& cstream = *fDebugStreamer; |
2134 | if (AliTRDReconstructor::StreamLevel()>0) | |
2135 | cstream<<"Tracks"<< | |
2136 | "EventNr="<<eventNr<< | |
2137 | "ESD.="<<&esdtrack<< | |
2138 | "trd.="<<track<< | |
2139 | "trdback.="<<track<< | |
2140 | "\n"; | |
7ad19338 | 2141 | } |
6c94f330 | 2142 | if (AliTRDReconstructor::StreamLevel()>0) |
2143 | cstream<<"Seeds2"<< | |
2144 | "Iter="<<iter<< | |
2145 | "Track.="<<track<< | |
2146 | "Like="<<seedquality[index]<< | |
2147 | "LikeF="<<seedquality2[index]<< | |
2148 | "S0.="<<&seed[index][0]<< | |
2149 | "S1.="<<&seed[index][1]<< | |
2150 | "S2.="<<&seed[index][2]<< | |
2151 | "S3.="<<&seed[index][3]<< | |
2152 | "S4.="<<&seed[index][4]<< | |
2153 | "S5.="<<&seed[index][5]<< | |
2154 | "Label="<<label<< | |
2155 | "Label1="<<label1<< | |
2156 | "Label2="<<label2<< | |
2157 | "FakeRatio="<<fakeratio<< | |
2158 | "Freq="<<frequency<< | |
2159 | "Ncl="<<ncl<< | |
2160 | "Nlayers="<<nlayers<< | |
2161 | "Findable="<<findable<< | |
2162 | "NUsed="<<nused<< | |
2163 | "sLayer="<<sLayer<< | |
2164 | "EventNr="<<eventNr<< | |
2165 | "\n"; | |
7ad19338 | 2166 | } |
2167 | } | |
6c94f330 | 2168 | } // end of loop over sectors |
75bd7f81 | 2169 | |
69b55c55 | 2170 | delete [] pseed; |
75bd7f81 | 2171 | |
69b55c55 | 2172 | } |
2173 | ||
5443e65e | 2174 | //_____________________________________________________________________________ |
b7a0917f | 2175 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const |
5443e65e | 2176 | { |
2177 | // | |
a819a5f7 | 2178 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
2179 | // from the file. The names of the cluster tree and branches | |
2180 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
2181 | // | |
75bd7f81 | 2182 | |
6c94f330 | 2183 | Int_t nsize = Int_t(ClusterTree->GetTotBytes()/(sizeof(AliTRDcluster))); |
2184 | TObjArray *clusterArray = new TObjArray(nsize+1000); | |
5443e65e | 2185 | |
c630aafd | 2186 | TBranch *branch=ClusterTree->GetBranch("TRDcluster"); |
2187 | if (!branch) { | |
6c94f330 | 2188 | Error("ReadClusters","Can't get the branch !"); |
c630aafd | 2189 | return 1; |
2190 | } | |
029cd327 | 2191 | branch->SetAddress(&clusterArray); |
5443e65e | 2192 | |
6c94f330 | 2193 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); |
2194 | // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); | |
2195 | ||
a819a5f7 | 2196 | // Loop through all entries in the tree |
6c94f330 | 2197 | Int_t nbytes = 0; |
a819a5f7 | 2198 | AliTRDcluster *c = 0; |
6c94f330 | 2199 | // printf("\n"); |
a819a5f7 | 2200 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
2201 | ||
2202 | // Import the tree | |
5443e65e | 2203 | nbytes += ClusterTree->GetEvent(iEntry); |
2204 | ||
a819a5f7 | 2205 | // Get the number of points in the detector |
029cd327 | 2206 | Int_t nCluster = clusterArray->GetEntriesFast(); |
6c94f330 | 2207 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 2208 | |
a819a5f7 | 2209 | // Loop through all TRD digits |
2210 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
6c94f330 | 2211 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
4f1c04d3 | 2212 | AliTRDcluster *co = c; |
a819a5f7 | 2213 | array->AddLast(co); |
6c94f330 | 2214 | // delete clusterArray->RemoveAt(iCluster); |
4f1c04d3 | 2215 | clusterArray->RemoveAt(iCluster); |
a819a5f7 | 2216 | } |
2217 | } | |
6c94f330 | 2218 | // cout<<"Allocated"<<nsize<<"\tLoaded"<<array->GetEntriesFast()<<"\n"; |
a819a5f7 | 2219 | |
029cd327 | 2220 | delete clusterArray; |
5443e65e | 2221 | |
c630aafd | 2222 | return 0; |
75bd7f81 | 2223 | |
a819a5f7 | 2224 | } |
2225 | ||
75bd7f81 | 2226 | //_____________________________________________________________________________ |
6c94f330 | 2227 | Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint& p) const |
3551db50 | 2228 | { |
2229 | // | |
2230 | // Get track space point with index i | |
2231 | // Origin: C.Cheshkov | |
2232 | // | |
2233 | ||
6c94f330 | 2234 | AliTRDcluster *cl = (AliTRDcluster*)fClusters->UncheckedAt(index); |
2235 | Int_t idet = cl->GetDetector(); | |
2236 | Int_t isector = fGeom->GetSector(idet); | |
2237 | Int_t ichamber= fGeom->GetChamber(idet); | |
2238 | Int_t iplan = fGeom->GetPlane(idet); | |
3551db50 | 2239 | Double_t local[3]; |
6c94f330 | 2240 | local[0]=GetX(isector,iplan,cl->GetLocalTimeBin()); |
2241 | local[1]=cl->GetY(); | |
2242 | local[2]=cl->GetZ(); | |
3551db50 | 2243 | Double_t global[3]; |
2244 | fGeom->RotateBack(idet,local,global); | |
2245 | p.SetXYZ(global[0],global[1],global[2]); | |
2246 | AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1; | |
2247 | switch (iplan) { | |
2248 | case 0: | |
2249 | iLayer = AliAlignObj::kTRD1; | |
2250 | break; | |
2251 | case 1: | |
2252 | iLayer = AliAlignObj::kTRD2; | |
2253 | break; | |
2254 | case 2: | |
2255 | iLayer = AliAlignObj::kTRD3; | |
2256 | break; | |
2257 | case 3: | |
2258 | iLayer = AliAlignObj::kTRD4; | |
2259 | break; | |
2260 | case 4: | |
2261 | iLayer = AliAlignObj::kTRD5; | |
2262 | break; | |
2263 | case 5: | |
2264 | iLayer = AliAlignObj::kTRD6; | |
2265 | break; | |
2266 | }; | |
6c94f330 | 2267 | Int_t modId = isector*fGeom->Ncham()+ichamber; |
3551db50 | 2268 | UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId); |
2269 | p.SetVolumeID(volid); | |
2270 | ||
2271 | return kTRUE; | |
2272 | ||
2273 | } | |
2274 | ||
75bd7f81 | 2275 | //_____________________________________________________________________________ |
029cd327 | 2276 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const |
2277 | { | |
2278 | // | |
2279 | // This cooks a label. Mmmmh, smells good... | |
2280 | // | |
46d29e70 | 2281 | |
6c94f330 | 2282 | Int_t label=123456789, index, i, j; |
2283 | Int_t ncl=pt->GetNumberOfClusters(); | |
2284 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; | |
5443e65e | 2285 | |
029cd327 | 2286 | Bool_t labelAdded; |
46d29e70 | 2287 | |
6c94f330 | 2288 | // Int_t s[kRange][2]; |
2289 | Int_t **s = new Int_t* [kRange]; | |
2290 | for (i=0; i<kRange; i++) { | |
d1b06c24 | 2291 | s[i] = new Int_t[2]; |
2292 | } | |
6c94f330 | 2293 | for (i=0; i<kRange; i++) { |
2294 | s[i][0]=-1; | |
2295 | s[i][1]=0; | |
46d29e70 | 2296 | } |
2297 | ||
6c94f330 | 2298 | Int_t t0,t1,t2; |
2299 | for (i=0; i<ncl; i++) { | |
2300 | index=pt->GetClusterIndex(i); | |
2301 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
2302 | t0=c->GetLabel(0); | |
2303 | t1=c->GetLabel(1); | |
2304 | t2=c->GetLabel(2); | |
46d29e70 | 2305 | } |
2306 | ||
6c94f330 | 2307 | for (i=0; i<ncl; i++) { |
2308 | index=pt->GetClusterIndex(i); | |
2309 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
2310 | for (Int_t k=0; k<3; k++) { | |
2311 | label=c->GetLabel(k); | |
2312 | labelAdded=kFALSE; j=0; | |
46d29e70 | 2313 | if (label >= 0) { |
6c94f330 | 2314 | while ( (!labelAdded) && ( j < kRange ) ) { |
2315 | if (s[j][0]==label || s[j][1]==0) { | |
2316 | s[j][0]=label; | |
2317 | s[j][1]=s[j][1]+1; | |
2318 | labelAdded=kTRUE; | |
a9814c09 | 2319 | } |
2320 | j++; | |
2321 | } | |
46d29e70 | 2322 | } |
2323 | } | |
2324 | } | |
2325 | ||
6c94f330 | 2326 | Int_t max=0; |
2327 | label = -123456789; | |
46d29e70 | 2328 | |
6c94f330 | 2329 | for (i=0; i<kRange; i++) { |
2330 | if (s[i][1]>max) { | |
2331 | max=s[i][1]; label=s[i][0]; | |
46d29e70 | 2332 | } |
2333 | } | |
5443e65e | 2334 | |
6c94f330 | 2335 | for (i=0; i<kRange; i++) { |
2336 | delete []s[i]; | |
5443e65e | 2337 | } |
2338 | ||
6c94f330 | 2339 | delete []s; |
5443e65e | 2340 | |
6c94f330 | 2341 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; |
5443e65e | 2342 | |
2343 | pt->SetLabel(label); | |
2344 | ||
46d29e70 | 2345 | } |
2346 | ||
75bd7f81 | 2347 | //_____________________________________________________________________________ |
029cd327 | 2348 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const |
2349 | { | |
2350 | // | |
2351 | // Use clusters, but don't abuse them! | |
2352 | // | |
75bd7f81 | 2353 | |
6c94f330 | 2354 | const Float_t kmaxchi2 =18; |
2355 | const Float_t kmincl =10; | |
2356 | AliTRDtrack * track = (AliTRDtrack*)t; | |
2357 | // | |
2358 | Int_t ncl=t->GetNumberOfClusters(); | |
2359 | for (Int_t i=from; i<ncl; i++) { | |
5443e65e | 2360 | Int_t index = t->GetClusterIndex(i); |
6c94f330 | 2361 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
2362 | // | |
69b55c55 | 2363 | Int_t iplane = fGeom->GetPlane(c->GetDetector()); |
6c94f330 | 2364 | if (track->fTracklets[iplane].GetChi2()>kmaxchi2) continue; |
2365 | if (track->fTracklets[iplane].GetN()<kmincl) continue; | |
69b55c55 | 2366 | if (!(c->IsUsed())) c->Use(); |
5443e65e | 2367 | } |
5443e65e | 2368 | |
75bd7f81 | 2369 | } |
5443e65e | 2370 | |
75bd7f81 | 2371 | //_____________________________________________________________________________ |
029cd327 | 2372 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 2373 | { |
75bd7f81 | 2374 | // |
5443e65e | 2375 | // Parametrised "expected" error of the cluster reconstruction in Y |
75bd7f81 | 2376 | // |
5443e65e | 2377 | |
2378 | Double_t s = 0.08 * 0.08; | |
2379 | return s; | |
75bd7f81 | 2380 | |
5443e65e | 2381 | } |
2382 | ||
75bd7f81 | 2383 | //_____________________________________________________________________________ |
029cd327 | 2384 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 2385 | { |
75bd7f81 | 2386 | // |
5443e65e | 2387 | // Parametrised "expected" error of the cluster reconstruction in Z |
75bd7f81 | 2388 | // |
5443e65e | 2389 | |
6c94f330 | 2390 | Double_t s = 9 * 9 /12.; |
5443e65e | 2391 | return s; |
75bd7f81 | 2392 | |
5443e65e | 2393 | } |
2394 | ||
75bd7f81 | 2395 | //_____________________________________________________________________________ |
029cd327 | 2396 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 2397 | { |
2398 | // | |
029cd327 | 2399 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 2400 | // in tracking sector <sector> and plane <plane> |
2401 | // | |
2402 | ||
6c94f330 | 2403 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
2404 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); | |
5443e65e | 2405 | return fTrSec[sector]->GetLayer(pl)->GetX(); |
2406 | ||
2407 | } | |
2408 | ||
75bd7f81 | 2409 | //_____________________________________________________________________________ |
2410 | AliTRDtracker::AliTRDpropagationLayer | |
2411 | ::AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho | |
2412 | , Double_t radLength, Int_t tbIndex, Int_t plane) | |
ad670fba | 2413 | :fN(0) |
2414 | ,fSec(0) | |
2415 | ,fClusters(NULL) | |
2416 | ,fIndex(NULL) | |
2417 | ,fX(x) | |
2418 | ,fdX(dx) | |
2419 | ,fRho(rho) | |
2420 | ,fX0(radLength) | |
2421 | ,fTimeBinIndex(tbIndex) | |
2422 | ,fPlane(plane) | |
2423 | ,fYmax(0) | |
2424 | ,fYmaxSensitive(0) | |
2425 | ,fHole(kFALSE) | |
2426 | ,fHoleZc(0) | |
2427 | ,fHoleZmax(0) | |
2428 | ,fHoleYc(0) | |
2429 | ,fHoleYmax(0) | |
2430 | ,fHoleRho(0) | |
2431 | ,fHoleX0(0) | |
5443e65e | 2432 | { |
0a29d0f1 | 2433 | // |
5443e65e | 2434 | // AliTRDpropagationLayer constructor |
0a29d0f1 | 2435 | // |
46d29e70 | 2436 | |
ad670fba | 2437 | for (Int_t i = 0; i < (Int_t) kZones; i++) { |
2438 | fZc[i] = 0; | |
2439 | fZmax[i] = 0; | |
a819a5f7 | 2440 | } |
5443e65e | 2441 | |
ad670fba | 2442 | if (fTimeBinIndex >= 0) { |
029cd327 | 2443 | fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; |
ad670fba | 2444 | fIndex = new UInt_t[kMaxClusterPerTimeBin]; |
a819a5f7 | 2445 | } |
46d29e70 | 2446 | |
ad670fba | 2447 | for (Int_t i = 0; i < 5; i++) { |
2448 | fIsHole[i] = kFALSE; | |
2449 | } | |
5443e65e | 2450 | |
2451 | } | |
2452 | ||
75bd7f81 | 2453 | //_____________________________________________________________________________ |
2454 | void AliTRDtracker::AliTRDpropagationLayer | |
2455 | ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho | |
2456 | , Double_t radLength, Double_t Yc, Double_t Zc) | |
5443e65e | 2457 | { |
2458 | // | |
2459 | // Sets hole in the layer | |
2460 | // | |
75bd7f81 | 2461 | |
6c94f330 | 2462 | fHole = kTRUE; |
2463 | fHoleZc = Zc; | |
5443e65e | 2464 | fHoleZmax = Zmax; |
6c94f330 | 2465 | fHoleYc = Yc; |
5443e65e | 2466 | fHoleYmax = Ymax; |
6c94f330 | 2467 | fHoleRho = rho; |
2468 | fHoleX0 = radLength; | |
75bd7f81 | 2469 | |
5443e65e | 2470 | } |
46d29e70 | 2471 | |
75bd7f81 | 2472 | //_____________________________________________________________________________ |
2473 | AliTRDtracker::AliTRDtrackingSector | |
ad670fba | 2474 | ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs) |
2475 | :fN(0) | |
2476 | ,fGeom(geo) | |
2477 | ,fGeomSector(gs) | |
5443e65e | 2478 | { |
2479 | // | |
2480 | // AliTRDtrackingSector Constructor | |
2481 | // | |
75bd7f81 | 2482 | |
ad670fba | 2483 | AliTRDpadPlane *padPlane = 0; |
2484 | AliTRDpropagationLayer *ppl = 0; | |
a5cadd36 | 2485 | |
ad670fba | 2486 | // Get holes description from geometry |
3c625a9b | 2487 | Bool_t holes[AliTRDgeometry::kNcham]; |
ad670fba | 2488 | for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) { |
3c625a9b | 2489 | holes[icham] = fGeom->IsHole(0,icham,gs); |
3c625a9b | 2490 | } |
3c625a9b | 2491 | |
ad670fba | 2492 | for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { |
2493 | fTimeBinIndex[i] = -1; | |
2494 | } | |
5443e65e | 2495 | |
ad670fba | 2496 | Double_t x; |
2497 | Double_t dx; | |
2498 | Double_t rho; | |
2499 | Double_t radLength; | |
5443e65e | 2500 | |
ad670fba | 2501 | // Add layers for each of the planes |
2502 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
a305677e | 2503 | //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
5443e65e | 2504 | |
ad670fba | 2505 | const Int_t kNchambers = AliTRDgeometry::Ncham(); |
a305677e | 2506 | Int_t tbIndex; |
ad670fba | 2507 | Double_t ymax = 0; |
2508 | Double_t ymaxsensitive = 0; | |
2509 | Double_t *zc = new Double_t[kNchambers]; | |
2510 | Double_t *zmax = new Double_t[kNchambers]; | |
3c625a9b | 2511 | Double_t *zmaxsensitive = new Double_t[kNchambers]; |
5443e65e | 2512 | |
ad670fba | 2513 | AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance(); |
2514 | if (!commonParam) { | |
030b4415 | 2515 | AliErrorGeneral("AliTRDtrackingSector::Ctor" |
2516 | ,"Could not get common parameters\n"); | |
3551db50 | 2517 | return; |
2518 | } | |
2519 | ||
ad670fba | 2520 | for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
2521 | ||
2522 | ymax = fGeom->GetChamberWidth(plane) / 2.0; | |
2523 | padPlane = commonParam->GetPadPlane(plane,0); | |
2524 | ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0; | |
2525 | ||
2526 | for (Int_t ch = 0; ch < kNchambers; ch++) { | |
2527 | zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0; | |
2528 | Float_t pad = padPlane->GetRowSize(1); | |
2529 | Float_t row0 = commonParam->GetRow0(plane,ch,0); | |
2530 | Int_t nPads = commonParam->GetRowMax(plane,ch,0); | |
2531 | zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0; | |
2532 | zc[ch] = -(pad * nPads) / 2.0 + row0; | |
5443e65e | 2533 | } |
2534 | ||
ad670fba | 2535 | dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0) |
2536 | / AliTRDcalibDB::Instance()->GetSamplingFrequency(); | |
2537 | rho = 0.00295 * 0.85; //???? | |
2538 | radLength = 11.0; | |
5443e65e | 2539 | |
3551db50 | 2540 | Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane); |
a305677e | 2541 | //Double_t xbottom = x0 - dxDrift; |
ad670fba | 2542 | //Double_t xtop = x0 + dxAmp; |
2543 | ||
59393e34 | 2544 | Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
ad670fba | 2545 | for (Int_t iTime = 0; iTime < nTimeBins; iTime++) { |
2546 | ||
2547 | Double_t xlayer = iTime * dx - dxAmp; | |
2548 | //if (xlayer<0) xlayer = dxAmp / 2.0; | |
59393e34 | 2549 | x = x0 - xlayer; |
ad670fba | 2550 | |
2551 | tbIndex = CookTimeBinIndex(plane,iTime); | |
2552 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane); | |
3c625a9b | 2553 | ppl->SetYmax(ymax,ymaxsensitive); |
ad670fba | 2554 | ppl->SetZ(zc,zmax,zmaxsensitive); |
3c625a9b | 2555 | ppl->SetHoles(holes); |
59393e34 | 2556 | InsertLayer(ppl); |
ad670fba | 2557 | |
5443e65e | 2558 | } |
ad670fba | 2559 | |
5443e65e | 2560 | } |
2561 | ||
5443e65e | 2562 | MapTimeBinLayers(); |
ad670fba | 2563 | |
029cd327 | 2564 | delete [] zc; |
2565 | delete [] zmax; | |
4f1c04d3 | 2566 | delete [] zmaxsensitive; |
5443e65e | 2567 | |
2568 | } | |
2569 | ||
ad670fba | 2570 | //_____________________________________________________________________________ |
2571 | AliTRDtracker::AliTRDtrackingSector | |
2572 | ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/) | |
2573 | :fN(0) | |
2574 | ,fGeom(0) | |
2575 | ,fGeomSector(0) | |
2576 | { | |
2577 | // | |
2578 | // Copy constructor | |
2579 | // | |
2580 | ||
2581 | } | |
2582 | ||
75bd7f81 | 2583 | //_____________________________________________________________________________ |
2584 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2585 | ::CookTimeBinIndex(Int_t plane, Int_t localTB) const | |
5443e65e | 2586 | { |
2587 | // | |
6c94f330 | 2588 | // depending on the digitization parameters calculates "global" |
029cd327 | 2589 | // time bin index for timebin <localTB> in plane <plane> |
5443e65e | 2590 | // |
59393e34 | 2591 | // |
75bd7f81 | 2592 | |
59393e34 | 2593 | Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); |
6c94f330 | 2594 | Int_t gtb = (plane+1) * tbPerPlane - localTB -1; |
2595 | if (localTB<0) return -1; | |
2596 | if (gtb<0) return -1; | |
75bd7f81 | 2597 | |
5443e65e | 2598 | return gtb; |
5443e65e | 2599 | |
75bd7f81 | 2600 | } |
5443e65e | 2601 | |
75bd7f81 | 2602 | //_____________________________________________________________________________ |
2603 | void AliTRDtracker::AliTRDtrackingSector | |
2604 | ::MapTimeBinLayers() | |
5443e65e | 2605 | { |
2606 | // | |
2607 | // For all sensitive time bins sets corresponding layer index | |
2608 | // in the array fTimeBins | |
2609 | // | |
2610 | ||
2611 | Int_t index; | |
2612 | ||
6c94f330 | 2613 | for(Int_t i = 0; i < fN; i++) { |
5443e65e | 2614 | index = fLayers[i]->GetTimeBinIndex(); |
6c94f330 | 2615 | |
2616 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); | |
5443e65e | 2617 | |
2618 | if(index < 0) continue; | |
029cd327 | 2619 | if(index >= (Int_t) kMaxTimeBinIndex) { |
6c94f330 | 2620 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); |
2621 | printf(" index %d exceeds allowed maximum of %d!\n", | |
2622 | index, kMaxTimeBinIndex-1); | |
5443e65e | 2623 | continue; |
2624 | } | |
2625 | fTimeBinIndex[index] = i; | |
2626 | } | |
5443e65e | 2627 | |
75bd7f81 | 2628 | } |
5443e65e | 2629 | |
75bd7f81 | 2630 | //_____________________________________________________________________________ |
2631 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2632 | ::GetLayerNumber(Double_t x) const | |
5443e65e | 2633 | { |
2634 | // | |
2635 | // Returns the number of time bin which in radial position is closest to <x> | |
2636 | // | |
2637 | ||
6c94f330 | 2638 | if(x >= fLayers[fN-1]->GetX()) return fN-1; |
2639 | if(x <= fLayers[0]->GetX()) return 0; | |
ad670fba | 2640 | |
6c94f330 | 2641 | Int_t b=0, e=fN-1, m=(b+e)/2; |
2642 | for (; b<e; m=(b+e)/2) { | |
2643 | if (x > fLayers[m]->GetX()) b=m+1; | |
2644 | else e=m; | |
5443e65e | 2645 | } |
6c94f330 | 2646 | if(TMath::Abs(x - fLayers[m]->GetX()) > |
2647 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; | |
75bd7f81 | 2648 | |
6c94f330 | 2649 | else return m; |
5443e65e | 2650 | |
2651 | } | |
2652 | ||
75bd7f81 | 2653 | //_____________________________________________________________________________ |
2654 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2655 | ::GetInnerTimeBin() const | |
5443e65e | 2656 | { |
2657 | // | |
2658 | // Returns number of the innermost SENSITIVE propagation layer | |
2659 | // | |
2660 | ||
2661 | return GetLayerNumber(0); | |
5443e65e | 2662 | |
75bd7f81 | 2663 | } |
5443e65e | 2664 | |
75bd7f81 | 2665 | //_____________________________________________________________________________ |
2666 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2667 | ::GetOuterTimeBin() const | |
5443e65e | 2668 | { |
2669 | // | |
2670 | // Returns number of the outermost SENSITIVE time bin | |
2671 | // | |
2672 | ||
2673 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2674 | |
75bd7f81 | 2675 | } |
5443e65e | 2676 | |
75bd7f81 | 2677 | //_____________________________________________________________________________ |
2678 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2679 | ::GetNumberOfTimeBins() const | |
5443e65e | 2680 | { |
2681 | // | |
2682 | // Returns number of SENSITIVE time bins | |
2683 | // | |
2684 | ||
6c94f330 | 2685 | Int_t tb, layer; |
2686 | for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { | |
5443e65e | 2687 | layer = GetLayerNumber(tb); |
6c94f330 | 2688 | if(layer>=0) break; |
5443e65e | 2689 | } |
75bd7f81 | 2690 | |
6c94f330 | 2691 | return tb+1; |
5443e65e | 2692 | |
75bd7f81 | 2693 | } |
5443e65e | 2694 | |
75bd7f81 | 2695 | //_____________________________________________________________________________ |
2696 | void AliTRDtracker::AliTRDtrackingSector | |
2697 | ::InsertLayer(AliTRDpropagationLayer* pl) | |
5443e65e | 2698 | { |
2699 | // | |
2700 | // Insert layer <pl> in fLayers array. | |
2701 | // Layers are sorted according to X coordinate. | |
75bd7f81 | 2702 | // |
5443e65e | 2703 | |
6c94f330 | 2704 | if ( fN == ((Int_t) kMaxLayersPerSector)) { |
2705 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); | |
ad670fba | 2706 | return; |
2707 | } | |
6c94f330 | 2708 | if (fN==0) {fLayers[fN++] = pl; return;} |
2709 | Int_t i=Find(pl->GetX()); | |
ad670fba | 2710 | |
6c94f330 | 2711 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); |
2712 | fLayers[i]=pl; fN++; | |
5443e65e | 2713 | |
2714 | } | |
2715 | ||
75bd7f81 | 2716 | //_____________________________________________________________________________ |
2717 | Int_t AliTRDtracker::AliTRDtrackingSector | |
2718 | ::Find(Double_t x) const | |
5443e65e | 2719 | { |
2720 | // | |
2721 | // Returns index of the propagation layer nearest to X | |
2722 | // | |
2723 | ||
6c94f330 | 2724 | if (x <= fLayers[0]->GetX()) return 0; |
2725 | if (x > fLayers[fN-1]->GetX()) return fN; | |
2726 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2727 | for (; b<e; m=(b+e)/2) { | |
2728 | if (x > fLayers[m]->GetX()) b=m+1; | |
2729 | else e=m; | |
5443e65e | 2730 | } |
7ad19338 | 2731 | |
75bd7f81 | 2732 | return m; |
7ad19338 | 2733 | |
75bd7f81 | 2734 | } |
7ad19338 | 2735 | |
75bd7f81 | 2736 | //_____________________________________________________________________________ |
2737 | void AliTRDtracker::AliTRDpropagationLayer | |
6c94f330 | 2738 | ::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) |
3c625a9b | 2739 | { |
2740 | // | |
6c94f330 | 2741 | // set centers and the width of sectors |
75bd7f81 | 2742 | // |
2743 | ||
6c94f330 | 2744 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ |
2745 | fZc[icham] = center[icham]; | |
2746 | fZmax[icham] = w[icham]; | |
3c625a9b | 2747 | fZmaxSensitive[icham] = wsensitive[icham]; |
6c94f330 | 2748 | // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); |
3c625a9b | 2749 | } |
75bd7f81 | 2750 | |
3c625a9b | 2751 | } |
5443e65e | 2752 | |
75bd7f81 | 2753 | //_____________________________________________________________________________ |
3c625a9b | 2754 | void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) |
2755 | { | |
2756 | // | |
6c94f330 | 2757 | // set centers and the width of sectors |
75bd7f81 | 2758 | // |
2759 | ||
3c625a9b | 2760 | fHole = kFALSE; |
6c94f330 | 2761 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ |
3c625a9b | 2762 | fIsHole[icham] = holes[icham]; |
6c94f330 | 2763 | if (holes[icham]) fHole = kTRUE; |
3c625a9b | 2764 | } |
5443e65e | 2765 | |
75bd7f81 | 2766 | } |
5443e65e | 2767 | |
75bd7f81 | 2768 | //_____________________________________________________________________________ |
2769 | void AliTRDtracker::AliTRDpropagationLayer | |
6c94f330 | 2770 | ::InsertCluster(AliTRDcluster* c, UInt_t index) |
75bd7f81 | 2771 | { |
2772 | // | |
2773 | // Insert cluster in cluster array. | |
2774 | // Clusters are sorted according to Y coordinate. | |
2775 | // | |
5443e65e | 2776 | |
6c94f330 | 2777 | if(fTimeBinIndex < 0) { |
2778 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); | |
5443e65e | 2779 | return; |
2780 | } | |
ad670fba | 2781 | |
6c94f330 | 2782 | if (fN== (Int_t) kMaxClusterPerTimeBin) { |
2783 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); | |
ad670fba | 2784 | return; |
2785 | } | |
6c94f330 | 2786 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} |
2787 | Int_t i=Find(c->GetY()); | |
2788 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); | |
2789 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); | |
2790 | fIndex[i]=index; fClusters[i]=c; fN++; | |
5443e65e | 2791 | |
75bd7f81 | 2792 | } |
5443e65e | 2793 | |
75bd7f81 | 2794 | //_____________________________________________________________________________ |
2795 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Float_t y) const | |
2796 | { | |
2797 | // | |
2798 | // Returns index of the cluster nearest in Y | |
2799 | // | |
5443e65e | 2800 | |
6c94f330 | 2801 | if (fN<=0) return 0; |
2802 | if (y <= fClusters[0]->GetY()) return 0; | |
2803 | if (y > fClusters[fN-1]->GetY()) return fN; | |
2804 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2805 | for (; b<e; m=(b+e)/2) { | |
2806 | if (y > fClusters[m]->GetY()) b=m+1; | |
2807 | else e=m; | |
5443e65e | 2808 | } |
75bd7f81 | 2809 | |
5443e65e | 2810 | return m; |
75bd7f81 | 2811 | |
5443e65e | 2812 | } |
2813 | ||
75bd7f81 | 2814 | //_____________________________________________________________________________ |
2815 | Int_t AliTRDtracker::AliTRDpropagationLayer | |
2816 | ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad | |
2817 | , Float_t maxroadz) const | |
7ad19338 | 2818 | { |
2819 | // | |
2820 | // Returns index of the cluster nearest to the given y,z | |
2821 | // | |
75bd7f81 | 2822 | |
6c94f330 | 2823 | Int_t index = -1; |
2824 | Int_t maxn = fN; | |
69b55c55 | 2825 | Float_t mindist = maxroad; |
6c94f330 | 2826 | // |
2827 | for (Int_t i=Find(y-maxroad); i<maxn; i++) { | |
2828 | AliTRDcluster* c=(AliTRDcluster*)(fClusters[i]); | |
69b55c55 | 2829 | Float_t ycl = c->GetY(); |
6c94f330 | 2830 | // |
2831 | if (ycl > y+maxroad) break; | |
2832 | if (TMath::Abs(c->GetZ()-z) > maxroadz) continue; | |
2833 | if (TMath::Abs(ycl-y)<mindist){ | |
2834 | mindist = TMath::Abs(ycl-y); | |
2835 | index = fIndex[i]; | |
2836 | } | |
2837 | } | |
75bd7f81 | 2838 | |
7ad19338 | 2839 | return index; |
7ad19338 | 2840 | |
75bd7f81 | 2841 | } |
7ad19338 | 2842 | |
75bd7f81 | 2843 | //_____________________________________________________________________________ |
2844 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) | |
2845 | { | |
2846 | // | |
2847 | // Returns correction factor for tilted pads geometry | |
2848 | // | |
5443e65e | 2849 | |
6c94f330 | 2850 | Int_t det = c->GetDetector(); |
fd621f36 | 2851 | Int_t plane = fGeom->GetPlane(det); |
3551db50 | 2852 | AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(plane,0); |
6c94f330 | 2853 | Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); |
b8dc2353 | 2854 | |
6c94f330 | 2855 | if(fNoTilt) h01 = 0; |
75bd7f81 | 2856 | |
fd621f36 | 2857 | return h01; |
5443e65e | 2858 | |
75bd7f81 | 2859 | } |
c630aafd | 2860 | |
75bd7f81 | 2861 | //_____________________________________________________________________________ |
eab5961e | 2862 | void AliTRDtracker::CookdEdxTimBin(AliTRDtrack& TRDtrack) |
2863 | { | |
75bd7f81 | 2864 | // |
6c94f330 | 2865 | // *** ADDED TO GET MORE INFORMATION FOR TRD PID ---- PS |
eab5961e | 2866 | // This is setting fdEdxPlane and fTimBinPlane |
2867 | // Sums up the charge in each plane for track TRDtrack and also get the | |
2868 | // Time bin for Max. Cluster | |
2869 | // Prashant Shukla (shukla@physi.uni-heidelberg.de) | |
75bd7f81 | 2870 | // |
eab5961e | 2871 | |
6d45eaef | 2872 | Double_t clscharge[AliESDtrack::kNPlane][AliESDtrack::kNSlice]; |
2873 | Double_t maxclscharge[AliESDtrack::kNPlane]; | |
2874 | Int_t nCluster[AliESDtrack::kNPlane][AliESDtrack::kNSlice]; | |
2875 | Int_t timebin[AliESDtrack::kNPlane]; | |
2876 | ||
6c94f330 | 2877 | //Initialization of cluster charge per plane. |
6d45eaef | 2878 | for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) { |
2879 | for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) { | |
2880 | clscharge[iPlane][iSlice] = 0.0; | |
6c94f330 | 2881 | nCluster[iPlane][iSlice] = 0; |
6d45eaef | 2882 | } |
2883 | } | |
eab5961e | 2884 | |
6c94f330 | 2885 | //Initialization of cluster charge per plane. |
f122c485 | 2886 | for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) { |
6c94f330 | 2887 | timebin[iPlane] = -1; |
eab5961e | 2888 | maxclscharge[iPlane] = 0.0; |
2889 | } | |
2890 | ||
2891 | // Loop through all clusters associated to track TRDtrack | |
2892 | Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack | |
2893 | for (Int_t iClus = 0; iClus < nClus; iClus++) { | |
2894 | Double_t charge = TRDtrack.GetClusterdQdl(iClus); | |
6c94f330 | 2895 | Int_t index = TRDtrack.GetClusterIndex(iClus); |
c6f438c0 | 2896 | AliTRDcluster *pTRDcluster = (AliTRDcluster *) GetCluster(index); |
2897 | if (!pTRDcluster) continue; | |
2898 | Int_t tb = pTRDcluster->GetLocalTimeBin(); | |
6c94f330 | 2899 | if (!tb) continue; |
c6f438c0 | 2900 | Int_t detector = pTRDcluster->GetDetector(); |
eab5961e | 2901 | Int_t iPlane = fGeom->GetPlane(detector); |
6c94f330 | 2902 | Int_t iSlice = tb*AliESDtrack::kNSlice/AliTRDtrack::kNtimeBins; |
2903 | clscharge[iPlane][iSlice] = clscharge[iPlane][iSlice]+charge; | |
eab5961e | 2904 | if(charge > maxclscharge[iPlane]) { |
2905 | maxclscharge[iPlane] = charge; | |
6c94f330 | 2906 | timebin[iPlane] = tb; |
eab5961e | 2907 | } |
6d45eaef | 2908 | nCluster[iPlane][iSlice]++; |
6c94f330 | 2909 | } // end of loop over cluster |
eab5961e | 2910 | |
2911 | // Setting the fdEdxPlane and fTimBinPlane variabales | |
c6f438c0 | 2912 | Double_t totalCharge = 0; |
6c94f330 | 2913 | |
f122c485 | 2914 | for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) { |
6d45eaef | 2915 | for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) { |
6c94f330 | 2916 | if (nCluster[iPlane][iSlice]) clscharge[iPlane][iSlice] /= nCluster[iPlane][iSlice]; |
2917 | TRDtrack.SetPIDsignals(clscharge[iPlane][iSlice], iPlane, iSlice); | |
2918 | totalCharge= totalCharge+clscharge[iPlane][iSlice]; | |
bd50219c | 2919 | } |
6c94f330 | 2920 | TRDtrack.SetPIDTimBin(timebin[iPlane], iPlane); |
eab5961e | 2921 | } |
6d45eaef | 2922 | |
eab5961e | 2923 | // Int_t i; |
2924 | // Int_t nc=TRDtrack.GetNumberOfClusters(); | |
2925 | // Float_t dedx=0; | |
2926 | // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i); | |
2927 | // dedx /= nc; | |
2928 | // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2929 | // TRDtrack.SetPIDsignals(dedx, iPlane); | |
2930 | // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane); | |
2931 | // } | |
2932 | ||
75bd7f81 | 2933 | } |
c630aafd | 2934 | |
75bd7f81 | 2935 | //_____________________________________________________________________________ |
2936 | Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1 | |
6c94f330 | 2937 | , AliTRDtrack * track |
2938 | , Int_t *clusters,AliTRDtracklet&tracklet) | |
4f1c04d3 | 2939 | { |
6c94f330 | 2940 | // |
4f1c04d3 | 2941 | // |
75bd7f81 | 2942 | // Try to find nearest clusters to the track in timebins from t0 to t1 |
4f1c04d3 | 2943 | // |
6c94f330 | 2944 | // |
2945 | // | |
2946 | // correction coeficients - depends on TRD parameters - to be changed according it | |
2947 | // | |
ad670fba | 2948 | |
6c94f330 | 2949 | Double_t x[100],yt[100],zt[100]; |
2950 | Double_t xmean=0; //reference x | |
2951 | Double_t dz[10][100],dy[10][100]; | |
2952 | Float_t zmean[100], nmean[100]; | |
2953 | Int_t clfound=0; | |
2954 | Int_t indexes[10][100]; // indexes of the clusters in the road | |
2955 | AliTRDcluster *cl[10][100]; // pointers to the clusters in the road | |
2956 | Int_t best[10][100]; // index of best matching cluster | |
2957 | // | |
2958 | // | |
ad670fba | 2959 | |
6c94f330 | 2960 | for (Int_t it=0;it<100; it++){ |
2961 | x[it]=0; | |
2962 | yt[it]=0; | |
2963 | zt[it]=0; | |
2964 | clusters[it]=-2; | |
2965 | zmean[it]=0; | |
2966 | nmean[it]=0; | |
2967 | // | |
2968 | for (Int_t ih=0;ih<10;ih++){ | |
2969 | indexes[ih][it]=-2; //reset indexes1 | |
2970 | cl[ih][it]=0; | |
2971 | dz[ih][it]=-100; | |
2972 | dy[ih][it]=-100; | |
2973 | best[ih][it]=0; | |
2974 | } | |
2975 | } | |
2976 | // | |
2977 | Double_t x0 = track->GetX(); | |
2978 | Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2())); | |
2979 | Int_t nall=0; | |
2980 | Int_t nfound=0; | |
2981 | Double_t h01 =0; | |
2982 | Int_t plane =-1; | |
2983 | Int_t detector =-1; | |
2984 | Float_t padlength=0; | |
7ad19338 | 2985 | AliTRDtrack track2(*track); |
6c94f330 | 2986 | Float_t snpy = track->GetSnp(); |
2987 | Float_t tany = TMath::Sqrt(snpy*snpy/(1.-snpy*snpy)); | |
2988 | if (snpy<0) tany*=-1; | |
2989 | // | |
2990 | Double_t sy2=ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt()); | |
2991 | Double_t sz2=ExpectedSigmaZ2(x0,track->GetTgl()); | |
2992 | Double_t road = 15.*sqrt(track->GetSigmaY2() + sy2); | |
2993 | if (road>6.) road=6.; | |
4f1c04d3 | 2994 | |
6c94f330 | 2995 | // |
2996 | for (Int_t it=0;it<t1-t0;it++){ | |
2997 | Double_t maxChi2[2]={fgkMaxChi2,fgkMaxChi2}; | |
2998 | AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(it+t0)); | |
2999 | if (timeBin==0) continue; // no indexes1 | |
4f1c04d3 | 3000 | Int_t maxn = timeBin; |
6c94f330 | 3001 | x[it] = timeBin.GetX(); |
7ad19338 | 3002 | track2.PropagateTo(x[it]); |
6c94f330 | 3003 | yt[it] = track2.GetY(); |
3004 | zt[it] = track2.GetZ(); | |
7ad19338 | 3005 | |
6c94f330 | 3006 | Double_t y=yt[it],z=zt[it]; |
3007 | Double_t chi2 =1000000; | |
4f1c04d3 | 3008 | nall++; |
3009 | // | |
6c94f330 | 3010 | // find 2 nearest cluster at given time bin |
7ad19338 | 3011 | // |
6c94f330 | 3012 | // |
3013 | for (Int_t i=timeBin.Find(y-road); i<maxn; i++) { | |
3014 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
7ad19338 | 3015 | h01 = GetTiltFactor(c); |
6c94f330 | 3016 | if (plane<0){ |
c6f438c0 | 3017 | Int_t det = c->GetDetector(); |
6c94f330 | 3018 | plane = fGeom->GetPlane(det); |
3019 | padlength = TMath::Sqrt(c->GetSigmaZ2()*12.); | |
7ad19338 | 3020 | } |
6c94f330 | 3021 | // if (c->GetLocalTimeBin()==0) continue; |
4f1c04d3 | 3022 | if (c->GetY() > y+road) break; |
6c94f330 | 3023 | if((c->GetZ()-z)*(c->GetZ()-z) > 12. * sz2) continue; |
7ad19338 | 3024 | |
6c94f330 | 3025 | Double_t dist = TMath::Abs(c->GetZ()-z); |
3026 | if (dist> (0.5*padlength+6.*sigmaz)) continue; // 6 sigma boundary cut | |
3027 | Double_t cost = 0; | |
3028 | // | |
3029 | if (dist> (0.5*padlength-sigmaz)){ // sigma boundary cost function | |
3030 | cost = (dist-0.5*padlength)/(2.*sigmaz); | |
3031 | if (cost>-1) cost= (cost+1.)*(cost+1.); | |
3032 | else cost=0; | |
3033 | } | |
3034 | // Int_t label = TMath::Abs(track->GetLabel()); | |
3035 | // if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue; | |
3036 | chi2=track2.GetPredictedChi2(c,h01)+cost; | |
3037 | // | |
7ad19338 | 3038 | clfound++; |
6c94f330 | 3039 | |
7ad19338 | 3040 | if (chi2 > maxChi2[1]) continue; |
6c94f330 | 3041 | detector = c->GetDetector(); |
3042 | for (Int_t ih=2;ih<9; ih++){ //store the clusters in the road | |
3043 | if (cl[ih][it]==0){ | |
3044 | cl[ih][it] = c; | |
3045 | indexes[ih][it] =timeBin.GetIndex(i); // index - 9 - reserved for outliers | |
7ad19338 | 3046 | break; |
3047 | } | |
4f1c04d3 | 3048 | } |
6c94f330 | 3049 | // |
3050 | if (chi2 <maxChi2[0]){ | |
7ad19338 | 3051 | maxChi2[1] = maxChi2[0]; |
3052 | maxChi2[0] = chi2; | |
3053 | indexes[1][it] = indexes[0][it]; | |
3054 | cl[1][it] = cl[0][it]; | |
3055 | indexes[0][it] = timeBin.GetIndex(i); | |
3056 | cl[0][it] = c; | |
3057 | continue; | |
3058 | } | |
6c94f330 | 3059 | maxChi2[1]=chi2; |
3060 | cl[1][it] = c; | |
3061 | indexes[1][it] =timeBin.GetIndex(i); | |
7ad19338 | 3062 | } |
6c94f330 | 3063 | if (cl[0][it]){ |
7ad19338 | 3064 | nfound++; |
3065 | xmean += x[it]; | |
3066 | } | |
4f1c04d3 | 3067 | } |
3068 | // | |
6c94f330 | 3069 | if (nfound<4) return 0; |
3070 | xmean /=Float_t(nfound); // middle x | |
3071 | track2.PropagateTo(xmean); // propagate track to the center | |
3072 | // | |
3073 | // choose one of the variants | |
3074 | // | |
3075 | Int_t changes[10]; | |
3076 | Float_t sumz = 0; | |
3077 | Float_t sum = 0; | |
3078 | Double_t sumdy = 0; | |
3079 | Double_t sumdy2 = 0; | |
3080 | Double_t sumx = 0; | |
3081 | Double_t sumxy = 0; | |
3082 | Double_t sumx2 = 0; | |
3083 | Double_t mpads = 0; | |
3084 | // | |
3085 | Int_t ngood[10]; | |
3086 | Int_t nbad[10]; | |
7ad19338 | 3087 | // |
3088 | Double_t meanz[10]; | |
6c94f330 | 3089 | Double_t moffset[10]; // mean offset |
3090 | Double_t mean[10]; // mean value | |
3091 | Double_t angle[10]; // angle | |
3092 | // | |
3093 | Double_t smoffset[10]; // sigma of mean offset | |
3094 | Double_t smean[10]; // sigma of mean value | |
3095 | Double_t sangle[10]; // sigma of angle | |
3096 | Double_t smeanangle[10]; // correlation | |
3097 | // | |
7ad19338 | 3098 | Double_t sigmas[10]; |
6c94f330 | 3099 | Double_t tchi2s[10]; // chi2s for tracklet |
ad670fba | 3100 | |
6c94f330 | 3101 | for (Int_t it=0;it<10;it++) { |
ad670fba | 3102 | |
6c94f330 | 3103 | ngood[it] = 0; |
3104 | nbad[it] = 0; | |
3105 | // | |
3106 | meanz[it] = 0; | |
3107 | moffset[it] = 0; // mean offset | |
3108 | mean[it] = 0; // mean value | |
3109 | angle[it] = 0; // angle | |
3110 | // | |
3111 | smoffset[it] = 1e10; // sigma of mean offset | |
3112 | smean[it] = 1e10; // sigma of mean value | |
3113 | sangle[it] = 1e10; // sigma of angle | |
3114 | smeanangle[it] = 0; // correlation | |
3115 | // | |
3116 | sigmas[it] = 1e10; | |
3117 | tchi2s[it] = 1e10; // chi2s for tracklet | |
75bd7f81 | 3118 | |
3119 | } | |
3120 | ||
7ad19338 | 3121 | // |
6c94f330 | 3122 | // calculate zmean |
7ad19338 | 3123 | // |
6c94f330 | 3124 | for (Int_t it=0;it<t1-t0;it++){ |
7ad19338 | 3125 | if (!cl[0][it]) continue; |
6c94f330 | 3126 | for (Int_t dt=-3;dt<=3;dt++){ |
3127 | if (it+dt<0) continue; | |
3128 | if (it+dt>t1-t0) continue; | |
7ad19338 | 3129 | if (!cl[0][it+dt]) continue; |
6c94f330 | 3130 | zmean[it]+=cl[0][it+dt]->GetZ(); |
3131 | nmean[it]+=1.; | |
7ad19338 | 3132 | } |
6c94f330 | 3133 | zmean[it]/=nmean[it]; |
7ad19338 | 3134 | } |
6c94f330 | 3135 | // |
3136 | for (Int_t it=0; it<t1-t0;it++){ | |
3137 | best[0][it]=0; | |
3138 | for (Int_t ih=0;ih<10;ih++){ | |
3139 | dz[ih][it]=-100; | |
3140 | dy[ih][it]=-100; | |
4f1c04d3 | 3141 | if (!cl[ih][it]) continue; |
6c94f330 | 3142 | Double_t xcluster = cl[ih][it]->GetX(); |
3143 | Double_t ytrack,ztrack; | |
3144 | track2.GetProlongation(xcluster, ytrack, ztrack ); | |
3145 | dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // calculate distance from track in z | |
3146 | dy[ih][it] = cl[ih][it]->GetY()+ dz[ih][it]*h01 -ytrack; // in y | |
7ad19338 | 3147 | } |
6c94f330 | 3148 | // minimize changes |
7ad19338 | 3149 | if (!cl[0][it]) continue; |
6c94f330 | 3150 | if (TMath::Abs(cl[0][it]->GetZ()-zmean[it])> padlength*0.8 &&cl[1][it]) |
3151 | if (TMath::Abs(cl[1][it]->GetZ()-zmean[it])< padlength*0.5){ | |
3152 | best[0][it]=1; | |
4f1c04d3 | 3153 | } |
7ad19338 | 3154 | } |
3155 | // | |
6c94f330 | 3156 | // iterative choosing of "best path" |
7ad19338 | 3157 | // |
6c94f330 | 3158 | // |
3159 | Int_t label = TMath::Abs(track->GetLabel()); | |
3160 | Int_t bestiter=0; | |
3161 | // | |
3162 | for (Int_t iter=0;iter<9;iter++){ | |
3163 | // | |
3164 | changes[iter]= 0; | |
3165 | sumz = 0; sum=0; sumdy=0;sumdy2=0;sumx=0;sumx2=0;sumxy=0;mpads=0; ngood[iter]=0; nbad[iter]=0; | |
3166 | // linear fit | |
3167 | for (Int_t it=0;it<t1-t0;it++){ | |
7ad19338 | 3168 | if (!cl[best[iter][it]][it]) continue; |
6c94f330 | 3169 | //calculates pad-row changes |
3170 | Double_t zbefore= cl[best[iter][it]][it]->GetZ(); | |
3171 | Double_t zafter = cl[best[iter][it]][it]->GetZ(); | |
3172 | for (Int_t itd = it-1; itd>=0;itd--) { | |
7ad19338 | 3173 | if (cl[best[iter][itd]][itd]) { |
6c94f330 | 3174 | zbefore= cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3175 | break; |
3176 | } | |
3177 | } | |
6c94f330 | 3178 | for (Int_t itd = it+1; itd<t1-t0;itd++) { |
7ad19338 | 3179 | if (cl[best[iter][itd]][itd]) { |
6c94f330 | 3180 | zafter= cl[best[iter][itd]][itd]->GetZ(); |
7ad19338 | 3181 | break; |
3182 | } | |
3183 | } | |
6c94f330 | 3184 | if (TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore)>0.1&&TMath::Abs(cl[best[iter][it]][it]->GetZ()-zafter)>0.1) changes[iter]++; |
3185 | // | |
3186 | Double_t dx = x[it]-xmean; // distance to reference x | |
3187 | sumz += cl[best[iter][it]][it]->GetZ(); | |
4f1c04d3 | 3188 | sum++; |
6c94f330 | 3189 | sumdy += dy[best[iter][it]][it]; |
3190 | sumdy2+= dy[best[iter][it]][it]*dy[best[iter][it]][it]; | |
3191 | sumx += dx; | |
3192 | sumx2 += dx*dx; | |
7ad19338 | 3193 | sumxy += dx*dy[best[iter][it]][it]; |
6c94f330 | 3194 | mpads += cl[best[iter][it]][it]->GetNPads(); |
3195 | if (cl[best[iter][it]][it]->GetLabel(0)==label || cl[best[iter][it]][it]->GetLabel(1)==label||cl[best[iter][it]][it]->GetLabel(2)==label){ | |
7ad19338 | 3196 | ngood[iter]++; |
4f1c04d3 | 3197 | } |
6c94f330 | 3198 | else{ |
7ad19338 | 3199 | nbad[iter]++; |
4f1c04d3 | 3200 | } |
3201 | } | |
7ad19338 | 3202 | // |
6c94f330 | 3203 | // calculates line parameters |
7ad19338 | 3204 | // |
6c94f330 | 3205 | Double_t det = sum*sumx2-sumx*sumx; |
3206 | angle[iter] = (sum*sumxy-sumx*sumdy)/det; | |
3207 | mean[iter] = (sumx2*sumdy-sumx*sumxy)/det; | |
3208 | meanz[iter] = sumz/sum; | |
3209 | moffset[iter] = sumdy/sum; | |
3210 | mpads /= sum; // mean number of pads | |
3211 | // | |
3212 | // | |
3213 | Double_t sigma2 = 0; // normalized residuals - for line fit | |
3214 | Double_t sigma1 = 0; // normalized residuals - constant fit | |
3215 | // | |
3216 | for (Int_t it=0;it<t1-t0;it++){ | |
7ad19338 | 3217 | if (!cl[best[iter][it]][it]) continue; |
6c94f330 | 3218 | Double_t dx = x[it]-xmean; |
3219 | Double_t ytr = mean[iter]+angle[iter]*dx; | |
3220 | sigma2 += (dy[best[iter][it]][it]-ytr)*(dy[best[iter][it]][it]-ytr); | |
3221 | sigma1 += (dy[best[iter][it]][it]-moffset[iter])*(dy[best[iter][it]][it]-moffset[iter]); | |
7ad19338 | 3222 | sum++; |
4f1c04d3 | 3223 | } |
6c94f330 | 3224 | sigma2 /=(sum-2); // normalized residuals |
3225 | sigma1 /=(sum-1); // normalized residuals | |
7ad19338 | 3226 | // |
6c94f330 | 3227 | smean[iter] = sigma2*(sumx2/det); // estimated error2 of mean |
3228 | sangle[iter] = sigma2*(sum/det); // estimated error2 of angle | |
3229 | smeanangle[iter] = sigma2*(-sumx/det); // correlation | |
7ad19338 | 3230 | // |
6c94f330 | 3231 | // |
3232 | sigmas[iter] = TMath::Sqrt(sigma1); // | |
3233 | smoffset[iter]= (sigma1/sum)+0.01*0.01; // sigma of mean offset + unisochronity sigma | |
3234 | // | |
3235 | // iterative choosing of "better path" | |
3236 | // | |
3237 | for (Int_t it=0;it<t1-t0;it++){ | |
7ad19338 | 3238 | if (!cl[best[iter][it]][it]) continue; |
6c94f330 | 3239 | // |
3240 | Double_t sigmatr2 = smoffset[iter]+0.5*tany*tany; //add unisochronity + angular effect contribution | |
3241 | Double_t sweight = 1./sigmatr2+1./track->GetSigmaY2(); | |
3242 | Double_t weighty = (moffset[iter]/sigmatr2)/sweight; // weighted mean | |
3243 | Double_t sigmacl = TMath::Sqrt(sigma1*sigma1+track->GetSigmaY2()); // | |
3244 | Double_t mindist=100000; | |
3245 | Int_t ihbest=0; | |
3246 | for (Int_t ih=0;ih<10;ih++){ | |
7ad19338 | 3247 | if (!cl[ih][it]) break; |
6c94f330 | 3248 | Double_t dist2 = (dy[ih][it]-weighty)/sigmacl; |
3249 | dist2*=dist2; //chi2 distance | |
3250 | if (dist2<mindist){ | |
7ad19338 | 3251 | mindist = dist2; |
6c94f330 | 3252 | ihbest =ih; |
7ad19338 | 3253 | } |
3254 | } | |
6c94f330 | 3255 | best[iter+1][it]=ihbest; |
4f1c04d3 | 3256 | } |
4f1c04d3 | 3257 | // |
6c94f330 | 3258 | // update best hypothesy if better chi2 according tracklet position and angle |
7ad19338 | 3259 | // |
69b55c55 | 3260 | Double_t sy2 = smean[iter] + track->GetSigmaY2(); |
6c94f330 | 3261 | Double_t sa2 = sangle[iter] + track->GetSigmaSnp2();//track->fCee; |
3262 | Double_t say = track->GetSigmaSnpY();//track->fCey; | |
3263 | // Double_t chi20 = mean[bestiter]*mean[bestiter]/sy2+angle[bestiter]*angle[bestiter]/sa2; | |
3264 | // Double_t chi21 = mean[iter]*mean[iter]/sy2+angle[iter]*angle[iter]/sa2; | |
3265 | ||
3266 | Double_t detchi = sy2*sa2-say*say; | |
3267 | Double_t invers[3] = {sa2/detchi, sy2/detchi, -say/detchi}; //inverse value of covariance matrix | |
4f1c04d3 | 3268 | |
6c94f330 | 3269 | Double_t chi20 = mean[bestiter]*mean[bestiter]*invers[0]+angle[bestiter]*angle[bestiter]*invers[1]+ |
3270 | 2.*mean[bestiter]*angle[bestiter]*invers[2]; | |
3271 | Double_t chi21 = mean[iter]*mean[iter]*invers[0]+angle[iter]*angle[iter]*invers[1]+ | |
3272 | 2*mean[iter]*angle[iter]*invers[2]; | |
3273 | tchi2s[iter] =chi21; | |
3274 | // | |
3275 | if (changes[iter]<=changes[bestiter] && chi21<chi20) { | |
3276 | bestiter =iter; | |
7ad19338 | 3277 | } |
3278 | } | |
3279 | // | |
6c94f330 | 3280 | //set clusters |
7ad19338 | 3281 | // |
6c94f330 | 3282 | Double_t sigma2 = sigmas[0]; // choose as sigma from 0 iteration |
3283 | Short_t maxpos = -1; | |
3284 | Float_t maxcharge = 0; | |
3285 | Short_t maxpos4 = -1; | |
3286 | Float_t maxcharge4 = 0; | |
3287 | Short_t maxpos5 = -1; | |
3288 | Float_t maxcharge5 = 0; | |
8979685e | 3289 | |
7ad19338 | 3290 | //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.; |
3291 | //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept | |
3292 | ||
6c94f330 | 3293 | Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)); |
3294 | Double_t expectederr = sigma2*sigma2+0.01*0.01; | |
3295 | if (mpads>3.5) expectederr += (mpads-3.5)*0.04; | |
3296 | if (changes[bestiter]>1) expectederr+= changes[bestiter]*0.01; | |
3297 | expectederr+=(0.03*(tany-exB)*(tany-exB))*15; | |
3298 | // if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.; | |
7ad19338 | 3299 | //expectederr+=10000; |
6c94f330 | 3300 | for (Int_t it=0;it<t1-t0;it++){ |
7ad19338 | 3301 | if (!cl[best[bestiter][it]][it]) continue; |
6c94f330 | 3302 | cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // set cluster error |
3303 | if (!cl[best[bestiter][it]][it]->IsUsed()){ | |
3304 | cl[best[bestiter][it]][it]->SetY( cl[best[bestiter][it]][it]->GetY()); | |
3305 | // cl[best[bestiter][it]][it]->Use(); | |
69b55c55 | 3306 | } |
6c94f330 | 3307 | // |
3308 | // time bins with maximal charge | |
3309 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge){ | |
69b55c55 | 3310 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3311 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3312 | } |
6c94f330 | 3313 | |
3314 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge4){ | |
3315 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=4){ | |
69b55c55 | 3316 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3317 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3318 | } |
3319 | } | |
6c94f330 | 3320 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge5){ |
3321 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=5){ | |
69b55c55 | 3322 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3323 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
69b55c55 | 3324 | } |
7ad19338 | 3325 | } |
6c94f330 | 3326 | // |
3327 | // time bins with maximal charge | |
3328 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge){ | |
8979685e | 3329 | maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3330 | maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3331 | } |
6c94f330 | 3332 | |
3333 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge4){ | |
3334 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=4){ | |
8979685e | 3335 | maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3336 | maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3337 | } |
3338 | } | |
6c94f330 | 3339 | if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge5){ |
3340 | if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=5){ | |
8979685e | 3341 | maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); |
6c94f330 | 3342 | maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); |
8979685e | 3343 | } |
3344 | } | |
7ad19338 | 3345 | clusters[it+t0] = indexes[best[bestiter][it]][it]; |
6c94f330 | 3346 | //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 && cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0] = indexes[best[bestiter][it]][it]; //Test |
7ad19338 | 3347 | } |
3348 | // | |
6c94f330 | 3349 | // set tracklet parameters |
7ad19338 | 3350 | // |
6c94f330 | 3351 | Double_t trackleterr2 = smoffset[bestiter]+0.01*0.01; |
3352 | if (mpads>3.5) trackleterr2 += (mpads-3.5)*0.04; | |
3353 | trackleterr2+= changes[bestiter]*0.01; | |
3354 | trackleterr2*= TMath::Max(14.-nfound,1.); | |
3355 | trackleterr2+= 0.2*(tany-exB)*(tany-exB); | |
3356 | // | |
3357 | tracklet.Set(xmean, track2.GetY()+moffset[bestiter], meanz[bestiter], track2.GetAlpha(), trackleterr2); //set tracklet parameters | |
7ad19338 | 3358 | tracklet.SetTilt(h01); |
3359 | tracklet.SetP0(mean[bestiter]); | |
3360 | tracklet.SetP1(angle[bestiter]); | |
3361 | tracklet.SetN(nfound); | |
3362 | tracklet.SetNCross(changes[bestiter]); | |
3363 | tracklet.SetPlane(plane); | |
3364 | tracklet.SetSigma2(expectederr); | |
3365 | tracklet.SetChi2(tchi2s[bestiter]); | |
8979685e | 3366 | tracklet.SetMaxPos(maxpos,maxpos4,maxpos5); |
6c94f330 | 3367 | track->fTracklets[plane] = tracklet; |
3368 | track->fNWrong+=nbad[0]; | |
7ad19338 | 3369 | // |
3370 | // Debuging part | |
3371 | // | |
69b55c55 | 3372 | TClonesArray array0("AliTRDcluster"); |
3373 | TClonesArray array1("AliTRDcluster"); | |
6c94f330 | 3374 | array0.ExpandCreateFast(t1-t0+1); |
3375 | array1.ExpandCreateFast(t1-t0+1); | |
3376 | TTreeSRedirector& cstream = *fDebugStreamer; | |
7ad19338 | 3377 | AliTRDcluster dummy; |
3378 | Double_t dy0[100]; | |
8979685e | 3379 | Double_t dyb[100]; |
3380 | ||
6c94f330 | 3381 | for (Int_t it=0;it<t1-t0;it++){ |
7ad19338 | 3382 | dy0[it] = dy[0][it]; |
3383 | dyb[it] = dy[best[bestiter][it]][it]; | |
3384 | if(cl[0][it]) { | |
3385 | new(array0[it]) AliTRDcluster(*cl[0][it]); | |
3386 | } | |
3387 | else{ | |
3388 | new(array0[it]) AliTRDcluster(dummy); | |
3389 | } | |
3390 | if(cl[best[bestiter][it]][it]) { | |
3391 | new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]); | |
3392 | } | |
3393 | else{ | |
3394 | new(array1[it]) AliTRDcluster(dummy); | |
3395 | } | |
4f1c04d3 | 3396 | } |
7ad19338 | 3397 | TGraph graph0(t1-t0,x,dy0); |
3398 | TGraph graph1(t1-t0,x,dyb); | |
3399 | TGraph graphy(t1-t0,x,yt); | |
3400 | TGraph graphz(t1-t0,x,zt); | |
6c94f330 | 3401 | // |
3402 | // | |
3403 | if (AliTRDReconstructor::StreamLevel()>0) | |
3404 | cstream<<"tracklet"<< | |
3405 | "track.="<<track<< // track parameters | |
3406 | "tany="<<tany<< // tangent of the local track angle | |
3407 | "xmean="<<xmean<< // xmean - reference x of tracklet | |
3408 | "tilt="<<h01<< // tilt angle | |
3409 | "nall="<<nall<< // number of foundable clusters | |
3410 | "nfound="<<nfound<< // number of found clusters | |
3411 | "clfound="<<clfound<< // total number of found clusters in road | |
3412 | "mpads="<<mpads<< // mean number of pads per cluster | |
3413 | "plane="<<plane<< // plane number | |
3414 | "detector="<<detector<< // detector number | |
3415 | "road="<<road<< // the width of the used road | |
3416 | "graph0.="<<&graph0<< // x - y = dy for closest cluster | |
3417 | "graph1.="<<&graph1<< // x - y = dy for second closest cluster | |
3418 | "graphy.="<<&graphy<< // y position of the track | |
3419 | "graphz.="<<&graphz<< // z position of the track | |
3420 | // "fCl.="<<&array0<< // closest cluster | |
3421 | //"fCl2.="<<&array1<< // second closest cluster | |
3422 | "maxpos="<<maxpos<< // maximal charge postion | |
3423 | "maxcharge="<<maxcharge<< // maximal charge | |
3424 | "maxpos4="<<maxpos4<< // maximal charge postion - after bin 4 | |
3425 | "maxcharge4="<<maxcharge4<< // maximal charge - after bin 4 | |
3426 | "maxpos5="<<maxpos5<< // maximal charge postion - after bin 5 | |
3427 | "maxcharge5="<<maxcharge5<< // maximal charge - after bin 5 | |
3428 | // | |
3429 | "bestiter="<<bestiter<< // best iteration number | |
3430 | "tracklet.="<<&tracklet<< // corrspond to the best iteration | |
3431 | "tchi20="<<tchi2s[0]<< // chi2 of cluster in the 0 iteration | |
3432 | "tchi2b="<<tchi2s[bestiter]<< // chi2 of cluster in the best iteration | |
3433 | "sigmas0="<<sigmas[0]<< // residuals sigma | |
3434 | "sigmasb="<<sigmas[bestiter]<< // residulas sigma | |
3435 | // | |
3436 | "ngood0="<<ngood[0]<< // number of good clusters in 0 iteration | |
3437 | "nbad0="<<nbad[0]<< // number of bad clusters in 0 iteration | |
3438 | "ngoodb="<<ngood[bestiter]<< // in best iteration | |
3439 | "nbadb="<<nbad[bestiter]<< // in best iteration | |
3440 | // | |
3441 | "changes0="<<changes[0]<< // changes of pardrows in iteration number 0 | |
3442 | "changesb="<<changes[bestiter]<< // changes of pardrows in best iteration | |
3443 | // | |
3444 | "moffset0="<<moffset[0]<< // offset fixing angle in iter=0 | |
3445 | "smoffset0="<<smoffset[0]<< // sigma of offset fixing angle in iter=0 | |
3446 | "moffsetb="<<moffset[bestiter]<< // offset fixing angle in iter=best | |
3447 | "smoffsetb="<<smoffset[bestiter]<< // sigma of offset fixing angle in iter=best | |
3448 | // | |
3449 | "mean0="<<mean[0]<< // mean dy in iter=0; | |
3450 | "smean0="<<smean[0]<< // sigma of mean dy in iter=0 | |
3451 | "meanb="<<mean[bestiter]<< // mean dy in iter=best | |
3452 | "smeanb="<<smean[bestiter]<< // sigma of mean dy in iter=best | |
3453 | // | |
3454 | "angle0="<<angle[0]<< // angle deviation in the iteration number 0 | |
3455 | "sangle0="<<sangle[0]<< // sigma of angular deviation in iteration number 0 | |
3456 | "angleb="<<angle[bestiter]<< // angle deviation in the best iteration | |
3457 | "sangleb="<<sangle[bestiter]<< // sigma of angle deviation in the best iteration | |
3458 | // | |
3459 | "expectederr="<<expectederr<< // expected error of cluster position | |
3460 | "\n"; | |
3461 | // | |
3462 | // | |
4f1c04d3 | 3463 | return nfound; |
4f1c04d3 | 3464 | |
75bd7f81 | 3465 | } |
4f1c04d3 | 3466 | |
75bd7f81 | 3467 | //_____________________________________________________________________________ |
3468 | Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist | |
3469 | , Int_t *outlist, Bool_t down) | |
69b55c55 | 3470 | { |
3471 | // | |
3472 | // Sort eleements according occurancy | |
3473 | // The size of output array has is 2*n | |
3474 | // | |
75bd7f81 | 3475 | |
6c94f330 | 3476 | Int_t * sindexS = new Int_t[n]; // temp array for sorting |
3477 | Int_t * sindexF = new Int_t[2*n]; | |
3478 | for (Int_t i=0;i<n;i++) sindexF[i]=0; | |
3479 | // | |
3480 | TMath::Sort(n,inlist, sindexS, down); | |
3481 | Int_t last = inlist[sindexS[0]]; | |
3482 | Int_t val = last; | |
3483 | sindexF[0] = 1; | |
3484 | sindexF[0+n] = last; | |
3485 | Int_t countPos = 0; | |
3486 | // | |
3487 | // find frequency | |
3488 | for(Int_t i=1;i<n; i++){ | |
69b55c55 | 3489 | val = inlist[sindexS[i]]; |
6c94f330 | 3490 | if (last == val) sindexF[countPos]++; |
3491 | else{ | |
69b55c55 | 3492 | countPos++; |
3493 | sindexF[countPos+n] = val; | |
3494 | sindexF[countPos]++; | |
6c94f330 | 3495 | last =val; |
69b55c55 | 3496 | } |
3497 | } | |
6c94f330 | 3498 | if (last==val) countPos++; |
3499 | // sort according frequency | |
3500 | TMath::Sort(countPos, sindexF, sindexS, kTRUE); | |
3501 | for (Int_t i=0;i<countPos;i++){ | |
69b55c55 | 3502 | outlist[2*i ] = sindexF[sindexS[i]+n]; |
3503 | outlist[2*i+1] = sindexF[sindexS[i]]; | |
3504 | } | |
3505 | delete [] sindexS; | |
3506 | delete [] sindexF; | |
3507 | ||
3508 | return countPos; | |
75bd7f81 | 3509 | |
69b55c55 | 3510 | } |
3511 | ||
75bd7f81 | 3512 | //_____________________________________________________________________________ |
6c94f330 | 3513 | AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed * seeds, Double_t * params) |
69b55c55 | 3514 | { |
3515 | // | |
75bd7f81 | 3516 | // Register a seed |
69b55c55 | 3517 | // |
6c94f330 | 3518 | Double_t alpha=AliTRDgeometry::GetAlpha(); |
3519 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; | |
69b55c55 | 3520 | Double_t c[15]; |
6c94f330 | 3521 | c[0] = 0.2; |
3522 | c[1] = 0 ; c[2] = 2; | |
3523 | c[3] = 0 ; c[4] = 0; c[5] = 0.02; | |
3524 | c[6] = 0 ; c[7] = 0; c[8] = 0; c[9] = 0.1; | |
3525 | c[10] = 0 ; c[11] = 0; c[12] = 0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01; | |
3526 | // | |
3527 | Int_t index =0; | |
3528 | AliTRDcluster *cl =0; | |
3529 | for (Int_t ilayer=0;ilayer<6;ilayer++){ | |
3530 | if (seeds[ilayer].IsOK()){ | |
3531 | for (Int_t itime=22;itime>0;itime--){ | |
3532 | if (seeds[ilayer].fIndexes[itime]>0){ | |
69b55c55 | 3533 | index = seeds[ilayer].fIndexes[itime]; |
6c94f330 | 3534 | cl = seeds[ilayer].fClusters[itime]; |
69b55c55 | 3535 | break; |
3536 | } | |
3537 | } | |
3538 | } | |
6c94f330 | 3539 | if (index>0) break; |
69b55c55 | 3540 | } |
6c94f330 | 3541 | if (cl==0) return 0; |
3542 | AliTRDtrack * track = new AliTRDtrack(cl,index,¶ms[1],c, params[0],params[6]*alpha+shift); | |
3543 | track->PropagateTo(params[0]-5.); | |
69b55c55 | 3544 | track->ResetCovariance(1); |
6c94f330 | 3545 | // |
3546 | Int_t rc=FollowBackProlongation(*track); | |
3547 | if (rc<30) { | |
69b55c55 | 3548 | delete track; |
6c94f330 | 3549 | track =0; |
3550 | }else{ | |
69b55c55 | 3551 | track->CookdEdx(); |
3552 | CookdEdxTimBin(*track); | |
6c94f330 | 3553 | CookLabel(track, 0.9); |
69b55c55 | 3554 | } |
69b55c55 | 3555 | |
75bd7f81 | 3556 | return track; |
69b55c55 | 3557 | |
69b55c55 | 3558 | } |