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46d29e70 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
0fa7dfa7 | 16 | /* $Id$ */ |
bbf92647 | 17 | |
029cd327 | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // The standard TRD tracker // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
a2cb5b3d | 24 | #include <Riostream.h> |
46d29e70 | 25 | #include <TFile.h> |
46d29e70 | 26 | #include <TBranch.h> |
5443e65e | 27 | #include <TTree.h> |
c630aafd | 28 | #include <TObjArray.h> |
46d29e70 | 29 | |
46d29e70 | 30 | #include "AliTRDgeometry.h" |
5443e65e | 31 | #include "AliTRDparameter.h" |
32 | #include "AliTRDgeometryDetail.h" | |
46d29e70 | 33 | #include "AliTRDcluster.h" |
34 | #include "AliTRDtrack.h" | |
c630aafd | 35 | #include "AliTRDPartID.h" |
5443e65e | 36 | #include "../TPC/AliTPCtrack.h" |
46d29e70 | 37 | |
38 | #include "AliTRDtracker.h" | |
39 | ||
40 | ClassImp(AliTRDtracker) | |
41 | ||
029cd327 | 42 | const Float_t AliTRDtracker::fgkSeedDepth = 0.5; |
43 | const Float_t AliTRDtracker::fgkSeedStep = 0.10; | |
44 | const Float_t AliTRDtracker::fgkSeedGap = 0.25; | |
5443e65e | 45 | |
029cd327 | 46 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; |
47 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; | |
48 | const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; | |
49 | const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; | |
50 | const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; | |
a819a5f7 | 51 | |
029cd327 | 52 | const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; |
53 | const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; | |
54 | const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; | |
bbf92647 | 55 | |
029cd327 | 56 | const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; |
bbf92647 | 57 | |
029cd327 | 58 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
59 | const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; | |
bbf92647 | 60 | |
029cd327 | 61 | const Float_t AliTRDtracker::fgkSkipDepth = 0.3; |
62 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; | |
63 | const Float_t AliTRDtracker::fgkWideRoad = 20.; | |
5443e65e | 64 | |
029cd327 | 65 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
a819a5f7 | 66 | |
029cd327 | 67 | const Int_t AliTRDtracker::fgkFirstPlane = 5; |
68 | const Int_t AliTRDtracker::fgkLastPlane = 17; | |
9c9d2487 | 69 | |
bbf92647 | 70 | |
46d29e70 | 71 | //____________________________________________________________________ |
c630aafd | 72 | AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker() |
46d29e70 | 73 | { |
5443e65e | 74 | // |
75 | // Main constructor | |
76 | // | |
46d29e70 | 77 | |
c630aafd | 78 | //Float_t fTzero = 0; |
b8dc2353 | 79 | |
5443e65e | 80 | fAddTRDseeds = kFALSE; |
5443e65e | 81 | fGeom = NULL; |
b8dc2353 | 82 | fNoTilt = kFALSE; |
5443e65e | 83 | |
84 | TDirectory *savedir=gDirectory; | |
85 | TFile *in=(TFile*)geomfile; | |
86 | if (!in->IsOpen()) { | |
87 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); | |
88 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
89 | } | |
90 | else { | |
91 | in->cd(); | |
c630aafd | 92 | // in->ls(); |
5443e65e | 93 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
94 | fPar = (AliTRDparameter*) in->Get("TRDparameter"); | |
c630aafd | 95 | // fGeom->Dump(); |
5443e65e | 96 | } |
46d29e70 | 97 | |
5443e65e | 98 | if(fGeom) { |
99 | // fTzero = geo->GetT0(); | |
b8dc2353 | 100 | printf("Found geometry version %d on file \n", fGeom->IsVersion()); |
5443e65e | 101 | } |
102 | else { | |
c630aafd | 103 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); |
104 | printf("The DETAIL TRD geometry will be used\n"); | |
105 | fGeom = new AliTRDgeometryDetail(); | |
106 | } | |
107 | ||
108 | if (!fPar) { | |
109 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); | |
110 | printf("The DEFAULT TRD parameter will be used\n"); | |
5443e65e | 111 | fPar = new AliTRDparameter(); |
112 | } | |
c630aafd | 113 | fPar->ReInit(); |
5443e65e | 114 | |
115 | savedir->cd(); | |
46d29e70 | 116 | |
5443e65e | 117 | |
118 | // fGeom->SetT0(fTzero); | |
0a29d0f1 | 119 | |
46d29e70 | 120 | fNclusters = 0; |
121 | fClusters = new TObjArray(2000); | |
122 | fNseeds = 0; | |
5443e65e | 123 | fSeeds = new TObjArray(2000); |
46d29e70 | 124 | fNtracks = 0; |
5443e65e | 125 | fTracks = new TObjArray(1000); |
a819a5f7 | 126 | |
029cd327 | 127 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
128 | Int_t trS = CookSectorIndex(geomS); | |
129 | fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); | |
5443e65e | 130 | } |
a819a5f7 | 131 | |
029cd327 | 132 | Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); |
133 | if(tiltAngle < 0.1) { | |
b8dc2353 | 134 | fNoTilt = kTRUE; |
135 | } | |
136 | ||
137 | fSY2corr = 0.2; | |
138 | fSZ2corr = 120.; | |
139 | ||
029cd327 | 140 | if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; |
b8dc2353 | 141 | |
bbf92647 | 142 | |
5443e65e | 143 | // calculate max gap on track |
a819a5f7 | 144 | |
5443e65e | 145 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
146 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
a819a5f7 | 147 | |
5443e65e | 148 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); |
149 | Int_t tbAmp = fPar->GetTimeBefore(); | |
150 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 151 | if(kTRUE) maxAmp = 0; // intentional until we change the parameter class |
5443e65e | 152 | Int_t tbDrift = fPar->GetTimeMax(); |
153 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
a819a5f7 | 154 | |
5443e65e | 155 | tbDrift = TMath::Min(tbDrift,maxDrift); |
156 | tbAmp = TMath::Min(tbAmp,maxAmp); | |
46d29e70 | 157 | |
5443e65e | 158 | fTimeBinsPerPlane = tbAmp + tbDrift; |
029cd327 | 159 | fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); |
46d29e70 | 160 | |
5443e65e | 161 | fVocal = kFALSE; |
0a29d0f1 | 162 | |
9c9d2487 | 163 | |
164 | // Barrel Tracks [SR, 03.04.2003] | |
165 | ||
166 | fBarrelFile = 0; | |
167 | fBarrelTree = 0; | |
168 | fBarrelArray = 0; | |
169 | fBarrelTrack = 0; | |
170 | ||
171 | savedir->cd(); | |
5443e65e | 172 | } |
46d29e70 | 173 | |
5443e65e | 174 | //___________________________________________________________________ |
175 | AliTRDtracker::~AliTRDtracker() | |
46d29e70 | 176 | { |
029cd327 | 177 | // |
178 | // Destructor of AliTRDtracker | |
179 | // | |
180 | ||
5443e65e | 181 | delete fClusters; |
182 | delete fTracks; | |
183 | delete fSeeds; | |
184 | delete fGeom; | |
185 | delete fPar; | |
0a29d0f1 | 186 | |
029cd327 | 187 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
188 | delete fTrSec[geomS]; | |
5443e65e | 189 | } |
190 | } | |
46d29e70 | 191 | |
9c9d2487 | 192 | //_____________________________________________________________________ |
193 | ||
194 | void AliTRDtracker::SetBarrelTree(const char *mode) { | |
195 | // | |
196 | // | |
197 | // | |
198 | ||
199 | if (!IsStoringBarrel()) return; | |
200 | ||
201 | TDirectory *sav = gDirectory; | |
202 | if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE"); | |
203 | ||
204 | char buff[40]; | |
205 | sprintf(buff, "BarrelTRD_%d_%s", GetEventNumber(), mode); | |
206 | ||
207 | fBarrelFile->cd(); | |
208 | fBarrelTree = new TTree(buff, "Barrel TPC tracks"); | |
209 | ||
029cd327 | 210 | Int_t nRefs = fgkLastPlane - fgkFirstPlane + 1; |
9c9d2487 | 211 | |
212 | if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", nRefs); | |
213 | for(Int_t i=0; i<nRefs; i++) new((*fBarrelArray)[i]) AliBarrelTrack(); | |
214 | ||
215 | fBarrelTree->Branch("tracks", &fBarrelArray); | |
216 | sav->cd(); | |
217 | } | |
218 | ||
219 | //_____________________________________________________________________ | |
220 | ||
221 | void AliTRDtracker::StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn) { | |
222 | // | |
223 | // | |
224 | // | |
225 | ||
226 | if (!IsStoringBarrel()) return; | |
227 | ||
228 | static Int_t nClusters; | |
229 | static Int_t nWrong; | |
230 | static Double_t chi2; | |
231 | static Int_t index; | |
232 | static Bool_t wasLast = kTRUE; | |
233 | ||
234 | Int_t newClusters, newWrong; | |
235 | Double_t newChi2; | |
236 | ||
237 | if (wasLast) { | |
238 | ||
239 | fBarrelArray->Clear(); | |
240 | nClusters = nWrong = 0; | |
241 | chi2 = 0.0; | |
242 | index = 0; | |
243 | wasLast = kFALSE; | |
244 | } | |
245 | ||
246 | fBarrelTrack = (AliBarrelTrack*)(*fBarrelArray)[index++]; | |
247 | ps->GetBarrelTrack(fBarrelTrack); | |
248 | ||
249 | newClusters = ps->GetNumberOfClusters() - nClusters; | |
250 | newWrong = ps->GetNWrong() - nWrong; | |
251 | newChi2 = ps->GetChi2() - chi2; | |
252 | ||
253 | nClusters = ps->GetNumberOfClusters(); | |
254 | nWrong = ps->GetNWrong(); | |
255 | chi2 = ps->GetChi2(); | |
256 | ||
029cd327 | 257 | if (refPlane != fgkLastPlane) { |
9c9d2487 | 258 | fBarrelTrack->SetNClusters(newClusters, newChi2); |
259 | fBarrelTrack->SetNWrongClusters(newWrong); | |
260 | } else { | |
261 | wasLast = kTRUE; | |
262 | } | |
263 | ||
264 | fBarrelTrack->SetRefPlane(refPlane, isIn); | |
265 | } | |
266 | ||
267 | //_____________________________________________________________________ | |
268 | ||
269 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { | |
270 | // | |
271 | // Rotates the track when necessary | |
272 | // | |
273 | ||
274 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
275 | Double_t y = track->GetY(); | |
276 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
277 | ||
c630aafd | 278 | //Int_t ns = AliTRDgeometry::kNsect; |
9c9d2487 | 279 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; |
280 | ||
281 | if (y > ymax) { | |
282 | //s = (s+1) % ns; | |
283 | if (!track->Rotate(alpha)) return kFALSE; | |
284 | } else if (y <-ymax) { | |
285 | //s = (s-1+ns) % ns; | |
286 | if (!track->Rotate(-alpha)) return kFALSE; | |
287 | } | |
288 | ||
289 | return kTRUE; | |
290 | } | |
291 | ||
46d29e70 | 292 | //_____________________________________________________________________ |
5443e65e | 293 | inline Double_t f1trd(Double_t x1,Double_t y1, |
a9814c09 | 294 | Double_t x2,Double_t y2, |
295 | Double_t x3,Double_t y3) | |
46d29e70 | 296 | { |
0a29d0f1 | 297 | // |
46d29e70 | 298 | // Initial approximation of the track curvature |
0a29d0f1 | 299 | // |
46d29e70 | 300 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
301 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
302 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
303 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
304 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
305 | ||
306 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
307 | ||
308 | return -xr*yr/sqrt(xr*xr+yr*yr); | |
309 | } | |
310 | ||
311 | //_____________________________________________________________________ | |
5443e65e | 312 | inline Double_t f2trd(Double_t x1,Double_t y1, |
a9814c09 | 313 | Double_t x2,Double_t y2, |
314 | Double_t x3,Double_t y3) | |
46d29e70 | 315 | { |
0a29d0f1 | 316 | // |
5443e65e | 317 | // Initial approximation of the track curvature times X coordinate |
318 | // of the center of curvature | |
0a29d0f1 | 319 | // |
46d29e70 | 320 | |
321 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); | |
322 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
323 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
324 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
325 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
326 | ||
327 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
328 | ||
329 | return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); | |
330 | } | |
331 | ||
332 | //_____________________________________________________________________ | |
5443e65e | 333 | inline Double_t f3trd(Double_t x1,Double_t y1, |
a9814c09 | 334 | Double_t x2,Double_t y2, |
335 | Double_t z1,Double_t z2) | |
46d29e70 | 336 | { |
0a29d0f1 | 337 | // |
46d29e70 | 338 | // Initial approximation of the tangent of the track dip angle |
0a29d0f1 | 339 | // |
46d29e70 | 340 | |
341 | return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
342 | } | |
343 | ||
46e2d86c | 344 | |
345 | AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ | |
346 | // | |
347 | //try to find cluster in the backup list | |
348 | // | |
349 | AliTRDcluster * cl =0; | |
350 | UInt_t *indexes = track->GetBackupIndexes(); | |
351 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
352 | if (indexes[i]==0) break; | |
353 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
354 | if (!cli) break; | |
355 | if (cli->GetLocalTimeBin()!=timebin) continue; | |
356 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); | |
357 | if (iplane==plane) { | |
358 | cl = cli; | |
359 | break; | |
360 | } | |
361 | } | |
362 | return cl; | |
363 | } | |
364 | ||
46d29e70 | 365 | //___________________________________________________________________ |
5443e65e | 366 | Int_t AliTRDtracker::Clusters2Tracks(const TFile *inp, TFile *out) |
46d29e70 | 367 | { |
0a29d0f1 | 368 | // |
5443e65e | 369 | // Finds tracks within the TRD. File <inp> is expected to contain seeds |
370 | // at the outer part of the TRD. If <inp> is NULL, the seeds | |
371 | // are found within the TRD if fAddTRDseeds is TRUE. | |
372 | // The tracks are propagated to the innermost time bin | |
373 | // of the TRD and stored in file <out>. | |
0a29d0f1 | 374 | // |
a819a5f7 | 375 | |
5443e65e | 376 | LoadEvent(); |
377 | ||
378 | TDirectory *savedir=gDirectory; | |
a819a5f7 | 379 | |
5443e65e | 380 | char tname[100]; |
a819a5f7 | 381 | |
5443e65e | 382 | if (!out->IsOpen()) { |
383 | cerr<<"AliTRDtracker::Clusters2Tracks(): output file is not open !\n"; | |
384 | return 1; | |
385 | } | |
46d29e70 | 386 | |
e24ea474 | 387 | sprintf(tname,"seedTRDtoTPC_%d",GetEventNumber()); |
029cd327 | 388 | TTree tpcTree(tname,"Tree with seeds from TRD at outer TPC pad row"); |
5443e65e | 389 | AliTPCtrack *iotrack=0; |
029cd327 | 390 | tpcTree.Branch("tracks","AliTPCtrack",&iotrack,32000,0); |
5443e65e | 391 | |
e24ea474 | 392 | sprintf(tname,"TreeT%d_TRD",GetEventNumber()); |
029cd327 | 393 | TTree trdTree(tname,"TRD tracks at inner TRD time bin"); |
394 | AliTRDtrack *iotrackTRD=0; | |
395 | trdTree.Branch("tracks","AliTRDtrack",&iotrackTRD,32000,0); | |
5443e65e | 396 | |
397 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
029cd327 | 398 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
5443e65e | 399 | |
400 | if (inp) { | |
401 | TFile *in=(TFile*)inp; | |
402 | if (!in->IsOpen()) { | |
c630aafd | 403 | cerr<< |
404 | "AliTRDtracker::Clusters2Tracks(): file with seeds is not open !\n"; | |
5443e65e | 405 | cerr<<" ... going for seeds finding inside the TRD\n"; |
406 | } | |
407 | else { | |
408 | in->cd(); | |
e24ea474 | 409 | sprintf(tname,"TRDb_%d",GetEventNumber()); |
5443e65e | 410 | TTree *seedTree=(TTree*)in->Get(tname); |
411 | if (!seedTree) { | |
a9814c09 | 412 | cerr<<"AliTRDtracker::Clusters2Tracks(): "; |
413 | cerr<<"can't get a tree with track seeds !\n"; | |
414 | return 3; | |
5443e65e | 415 | } |
416 | AliTRDtrack *seed=new AliTRDtrack; | |
417 | seedTree->SetBranchAddress("tracks",&seed); | |
418 | ||
419 | Int_t n=(Int_t)seedTree->GetEntries(); | |
420 | for (Int_t i=0; i<n; i++) { | |
a9814c09 | 421 | seedTree->GetEvent(i); |
422 | seed->ResetCovariance(); | |
423 | AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha()); | |
424 | fSeeds->AddLast(tr); | |
425 | fNseeds++; | |
5443e65e | 426 | } |
427 | delete seed; | |
fd621f36 | 428 | delete seedTree; |
5443e65e | 429 | } |
430 | } | |
46d29e70 | 431 | |
5443e65e | 432 | out->cd(); |
46d29e70 | 433 | |
fd621f36 | 434 | |
5443e65e | 435 | // find tracks from loaded seeds |
a819a5f7 | 436 | |
5443e65e | 437 | Int_t nseed=fSeeds->GetEntriesFast(); |
438 | Int_t i, found = 0; | |
439 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
440 | ||
441 | for (i=0; i<nseed; i++) { | |
442 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
443 | FollowProlongation(t, innerTB); | |
444 | if (t.GetNumberOfClusters() >= foundMin) { | |
445 | UseClusters(&t); | |
029cd327 | 446 | CookLabel(pt, 1-fgkLabelFraction); |
5443e65e | 447 | // t.CookdEdx(); |
448 | } | |
029cd327 | 449 | iotrackTRD = pt; |
450 | trdTree.Fill(); | |
e24ea474 | 451 | found++; |
452 | // cout<<found<<'\r'; | |
5443e65e | 453 | |
454 | if(PropagateToTPC(t)) { | |
455 | AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha()); | |
456 | iotrack = tpc; | |
029cd327 | 457 | tpcTree.Fill(); |
5443e65e | 458 | delete tpc; |
459 | } | |
460 | delete fSeeds->RemoveAt(i); | |
461 | fNseeds--; | |
462 | } | |
a819a5f7 | 463 | |
5443e65e | 464 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
465 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
a819a5f7 | 466 | |
5443e65e | 467 | // after tracks from loaded seeds are found and the corresponding |
468 | // clusters are used, look for additional seeds from TRD | |
46d29e70 | 469 | |
5443e65e | 470 | if(fAddTRDseeds) { |
471 | // Find tracks for the seeds in the TRD | |
472 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
473 | ||
029cd327 | 474 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
475 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); | |
476 | Int_t step = (Int_t) (timeBins * fgkSeedStep); | |
5443e65e | 477 | |
478 | // make a first turn with tight cut on initial curvature | |
479 | for(Int_t turn = 1; turn <= 2; turn++) { | |
480 | if(turn == 2) { | |
029cd327 | 481 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
482 | step = (Int_t) (timeBins * (3*fgkSeedStep)); | |
5443e65e | 483 | } |
484 | for(Int_t i=0; i<nSteps; i++) { | |
a9814c09 | 485 | Int_t outer=timeBins-1-i*step; |
486 | Int_t inner=outer-gap; | |
46d29e70 | 487 | |
a9814c09 | 488 | nseed=fSeeds->GetEntriesFast(); |
5443e65e | 489 | |
a9814c09 | 490 | MakeSeeds(inner, outer, turn); |
5443e65e | 491 | |
a9814c09 | 492 | nseed=fSeeds->GetEntriesFast(); |
493 | printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", | |
494 | turn, i, nseed); | |
495 | ||
496 | for (Int_t i=0; i<nseed; i++) { | |
497 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
498 | FollowProlongation(t,innerTB); | |
499 | if (t.GetNumberOfClusters() >= foundMin) { | |
500 | UseClusters(&t); | |
029cd327 | 501 | CookLabel(pt, 1-fgkLabelFraction); |
a9814c09 | 502 | t.CookdEdx(); |
c630aafd | 503 | found++; |
e24ea474 | 504 | // cout<<found<<'\r'; |
029cd327 | 505 | iotrackTRD = pt; |
506 | trdTree.Fill(); | |
a9814c09 | 507 | if(PropagateToTPC(t)) { |
508 | AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha()); | |
509 | iotrack = tpc; | |
029cd327 | 510 | tpcTree.Fill(); |
a9814c09 | 511 | delete tpc; |
512 | } | |
513 | } | |
514 | delete fSeeds->RemoveAt(i); | |
515 | fNseeds--; | |
516 | } | |
46d29e70 | 517 | } |
5443e65e | 518 | } |
519 | } | |
029cd327 | 520 | tpcTree.Write(); |
521 | trdTree.Write(); | |
5443e65e | 522 | |
523 | cout<<"Total number of found tracks: "<<found<<endl; | |
524 | ||
525 | UnloadEvent(); | |
526 | ||
527 | savedir->cd(); | |
528 | ||
529 | return 0; | |
530 | } | |
c630aafd | 531 | |
532 | //___________________________________________________________________ | |
533 | Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) | |
534 | { | |
535 | // | |
536 | // Finds tracks within the TRD. The ESD event is expected to contain seeds | |
537 | // at the outer part of the TRD. The seeds | |
538 | // are found within the TRD if fAddTRDseeds is TRUE. | |
539 | // The tracks are propagated to the innermost time bin | |
540 | // of the TRD and the ESD event is updated | |
541 | // | |
542 | ||
543 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
029cd327 | 544 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
c630aafd | 545 | Int_t nseed = 0; |
546 | Int_t found = 0; | |
547 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
548 | ||
549 | Int_t n = event->GetNumberOfTracks(); | |
550 | for (Int_t i=0; i<n; i++) { | |
551 | AliESDtrack* seed=event->GetTrack(i); | |
552 | ULong_t status=seed->GetStatus(); | |
553 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; | |
554 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; | |
555 | nseed++; | |
556 | ||
557 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
46e2d86c | 558 | //seed2->ResetCovariance(); |
c630aafd | 559 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
560 | AliTRDtrack &t=*pt; | |
561 | FollowProlongation(t, innerTB); | |
562 | if (t.GetNumberOfClusters() >= foundMin) { | |
563 | UseClusters(&t); | |
029cd327 | 564 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 565 | // t.CookdEdx(); |
566 | } | |
567 | found++; | |
568 | // cout<<found<<'\r'; | |
569 | ||
570 | if(PropagateToTPC(t)) { | |
571 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDin); | |
572 | } | |
573 | delete seed2; | |
574 | delete pt; | |
575 | } | |
576 | ||
577 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
578 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
579 | ||
580 | // after tracks from loaded seeds are found and the corresponding | |
581 | // clusters are used, look for additional seeds from TRD | |
582 | ||
583 | if(fAddTRDseeds) { | |
584 | // Find tracks for the seeds in the TRD | |
585 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
586 | ||
029cd327 | 587 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
588 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); | |
589 | Int_t step = (Int_t) (timeBins * fgkSeedStep); | |
c630aafd | 590 | |
591 | // make a first turn with tight cut on initial curvature | |
592 | for(Int_t turn = 1; turn <= 2; turn++) { | |
593 | if(turn == 2) { | |
029cd327 | 594 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
595 | step = (Int_t) (timeBins * (3*fgkSeedStep)); | |
c630aafd | 596 | } |
597 | for(Int_t i=0; i<nSteps; i++) { | |
598 | Int_t outer=timeBins-1-i*step; | |
599 | Int_t inner=outer-gap; | |
600 | ||
601 | nseed=fSeeds->GetEntriesFast(); | |
602 | ||
603 | MakeSeeds(inner, outer, turn); | |
604 | ||
605 | nseed=fSeeds->GetEntriesFast(); | |
606 | printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", | |
607 | turn, i, nseed); | |
608 | ||
609 | for (Int_t i=0; i<nseed; i++) { | |
610 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
611 | FollowProlongation(t,innerTB); | |
612 | if (t.GetNumberOfClusters() >= foundMin) { | |
613 | UseClusters(&t); | |
029cd327 | 614 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 615 | t.CookdEdx(); |
616 | found++; | |
617 | // cout<<found<<'\r'; | |
618 | if(PropagateToTPC(t)) { | |
619 | AliESDtrack track; | |
620 | track.UpdateTrackParams(pt,AliESDtrack::kTRDin); | |
621 | event->AddTrack(&track); | |
622 | } | |
623 | } | |
624 | delete fSeeds->RemoveAt(i); | |
625 | fNseeds--; | |
626 | } | |
627 | } | |
628 | } | |
629 | } | |
630 | ||
631 | cout<<"Total number of found tracks: "<<found<<endl; | |
632 | ||
633 | return 0; | |
634 | } | |
5443e65e | 635 | |
c630aafd | 636 | |
5443e65e | 637 | |
638 | //_____________________________________________________________________________ | |
639 | Int_t AliTRDtracker::PropagateBack(const TFile *inp, TFile *out) { | |
640 | // | |
641 | // Reads seeds from file <inp>. The seeds are AliTPCtrack's found and | |
642 | // backpropagated by the TPC tracker. Each seed is first propagated | |
643 | // to the TRD, and then its prolongation is searched in the TRD. | |
644 | // If sufficiently long continuation of the track is found in the TRD | |
645 | // the track is updated, otherwise it's stored as originaly defined | |
646 | // by the TPC tracker. | |
647 | // | |
648 | ||
5443e65e | 649 | LoadEvent(); |
650 | ||
651 | TDirectory *savedir=gDirectory; | |
652 | ||
653 | TFile *in=(TFile*)inp; | |
654 | ||
655 | if (!in->IsOpen()) { | |
656 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
657 | cerr<<"file with back propagated TPC tracks is not open !\n"; | |
658 | return 1; | |
659 | } | |
660 | ||
661 | if (!out->IsOpen()) { | |
662 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
663 | cerr<<"file for back propagated TRD tracks is not open !\n"; | |
664 | return 2; | |
665 | } | |
666 | ||
667 | in->cd(); | |
668 | char tname[100]; | |
e24ea474 | 669 | sprintf(tname,"seedsTPCtoTRD_%d",GetEventNumber()); |
5443e65e | 670 | TTree *seedTree=(TTree*)in->Get(tname); |
671 | if (!seedTree) { | |
672 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
673 | cerr<<"can't get a tree with seeds from TPC !\n"; | |
674 | cerr<<"check if your version of TPC tracker creates tree "<<tname<<"\n"; | |
675 | return 3; | |
676 | } | |
46d29e70 | 677 | |
5443e65e | 678 | AliTPCtrack *seed=new AliTPCtrack; |
679 | seedTree->SetBranchAddress("tracks",&seed); | |
680 | ||
681 | Int_t n=(Int_t)seedTree->GetEntries(); | |
682 | for (Int_t i=0; i<n; i++) { | |
683 | seedTree->GetEvent(i); | |
684 | Int_t lbl = seed->GetLabel(); | |
685 | AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha()); | |
686 | tr->SetSeedLabel(lbl); | |
687 | fSeeds->AddLast(tr); | |
688 | fNseeds++; | |
689 | } | |
a819a5f7 | 690 | |
5443e65e | 691 | delete seed; |
692 | delete seedTree; | |
a819a5f7 | 693 | |
5443e65e | 694 | out->cd(); |
a819a5f7 | 695 | |
5443e65e | 696 | AliTPCtrack *otrack=0; |
a819a5f7 | 697 | |
e24ea474 | 698 | sprintf(tname,"seedsTRDtoTOF1_%d",GetEventNumber()); |
5443e65e | 699 | TTree tofTree1(tname,"Tracks back propagated through TPC and TRD"); |
700 | tofTree1.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 701 | |
e24ea474 | 702 | sprintf(tname,"seedsTRDtoTOF2_%d",GetEventNumber()); |
5443e65e | 703 | TTree tofTree2(tname,"Tracks back propagated through TPC and TRD"); |
704 | tofTree2.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
46d29e70 | 705 | |
e24ea474 | 706 | sprintf(tname,"seedsTRDtoPHOS_%d",GetEventNumber()); |
5443e65e | 707 | TTree phosTree(tname,"Tracks back propagated through TPC and TRD"); |
708 | phosTree.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 709 | |
e24ea474 | 710 | sprintf(tname,"seedsTRDtoRICH_%d",GetEventNumber()); |
5443e65e | 711 | TTree richTree(tname,"Tracks back propagated through TPC and TRD"); |
712 | richTree.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 713 | |
e24ea474 | 714 | sprintf(tname,"TRDb_%d",GetEventNumber()); |
5443e65e | 715 | TTree trdTree(tname,"Back propagated TRD tracks at outer TRD time bin"); |
029cd327 | 716 | AliTRDtrack *otrackTRD=0; |
717 | trdTree.Branch("tracks","AliTRDtrack",&otrackTRD,32000,0); | |
5443e65e | 718 | |
9c9d2487 | 719 | if (IsStoringBarrel()) SetBarrelTree("back"); |
720 | out->cd(); | |
46d29e70 | 721 | |
9c9d2487 | 722 | Int_t found=0; |
5443e65e | 723 | Int_t nseed=fSeeds->GetEntriesFast(); |
46d29e70 | 724 | |
029cd327 | 725 | // Float_t foundMin = fgkMinClustersInTrack * fTimeBinsPerPlane * fGeom->Nplan(); |
9c9d2487 | 726 | Float_t foundMin = 40; |
a819a5f7 | 727 | |
029cd327 | 728 | Int_t outermostTB = fTrSec[0]->GetOuterTimeBin(); |
a819a5f7 | 729 | |
5443e65e | 730 | for (Int_t i=0; i<nseed; i++) { |
a819a5f7 | 731 | |
5443e65e | 732 | AliTRDtrack *ps=(AliTRDtrack*)fSeeds->UncheckedAt(i), &s=*ps; |
733 | Int_t expectedClr = FollowBackProlongation(s); | |
9c9d2487 | 734 | |
735 | if (IsStoringBarrel()) { | |
029cd327 | 736 | StoreBarrelTrack(ps, fgkLastPlane, kTrackBack); |
9c9d2487 | 737 | fBarrelTree->Fill(); |
738 | } | |
739 | ||
5443e65e | 740 | Int_t foundClr = s.GetNumberOfClusters(); |
029cd327 | 741 | Int_t lastTB = fTrSec[0]->GetLayerNumber(s.GetX()); |
a819a5f7 | 742 | |
fd621f36 | 743 | // printf("seed %d: found %d out of %d expected clusters, Min is %f\n", |
a9814c09 | 744 | // i, foundClr, expectedClr, foundMin); |
a819a5f7 | 745 | |
5443e65e | 746 | if (foundClr >= foundMin) { |
a9814c09 | 747 | if(foundClr >= 2) { |
748 | s.CookdEdx(); | |
029cd327 | 749 | CookLabel(ps, 1-fgkLabelFraction); |
a9814c09 | 750 | UseClusters(ps); |
751 | } | |
0d5b5c27 | 752 | |
753 | // Propagate to outer reference plane [SR, GSI, 18.02.2003] | |
754 | ps->PropagateTo(364.8); | |
029cd327 | 755 | otrackTRD=ps; |
5443e65e | 756 | trdTree.Fill(); |
e24ea474 | 757 | found++; |
758 | // cout<<found<<'\r'; | |
46d29e70 | 759 | } |
a819a5f7 | 760 | |
029cd327 | 761 | if(((expectedClr < 10) && (lastTB == outermostTB)) || |
5443e65e | 762 | ((expectedClr >= 10) && |
a9814c09 | 763 | (((Float_t) foundClr) / ((Float_t) expectedClr) >= |
029cd327 | 764 | fgkMinFractionOfFoundClusters) && (lastTB == outermostTB))) { |
5443e65e | 765 | |
029cd327 | 766 | Double_t xTOF = 375.5; |
5443e65e | 767 | |
029cd327 | 768 | if(PropagateToOuterPlane(s,xTOF)) { |
a9814c09 | 769 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); |
770 | otrack = pt; | |
771 | tofTree1.Fill(); | |
772 | delete pt; | |
5443e65e | 773 | |
029cd327 | 774 | xTOF = 381.5; |
5443e65e | 775 | |
029cd327 | 776 | if(PropagateToOuterPlane(s,xTOF)) { |
a9814c09 | 777 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); |
778 | otrack = pt; | |
779 | tofTree2.Fill(); | |
780 | delete pt; | |
781 | ||
029cd327 | 782 | Double_t xPHOS = 460.; |
a9814c09 | 783 | |
029cd327 | 784 | if(PropagateToOuterPlane(s,xPHOS)) { |
a9814c09 | 785 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); |
786 | otrack = pt; | |
787 | phosTree.Fill(); | |
788 | delete pt; | |
789 | ||
029cd327 | 790 | Double_t xRICH = 490+1.267; |
a9814c09 | 791 | |
029cd327 | 792 | if(PropagateToOuterPlane(s,xRICH)) { |
a9814c09 | 793 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); |
794 | otrack = pt; | |
795 | richTree.Fill(); | |
796 | delete pt; | |
797 | } | |
798 | } | |
799 | } | |
5443e65e | 800 | } |
46d29e70 | 801 | } |
802 | } | |
5443e65e | 803 | |
9c9d2487 | 804 | |
805 | out->cd(); | |
5443e65e | 806 | tofTree1.Write(); |
807 | tofTree2.Write(); | |
808 | phosTree.Write(); | |
809 | richTree.Write(); | |
810 | trdTree.Write(); | |
46d29e70 | 811 | |
9c9d2487 | 812 | if (IsStoringBarrel()) { // [SR, 03.04.2003] |
813 | fBarrelFile->cd(); | |
814 | fBarrelTree->Write(); | |
815 | fBarrelFile->Flush(); | |
816 | } | |
817 | ||
5443e65e | 818 | savedir->cd(); |
819 | cerr<<"Number of seeds: "<<nseed<<endl; | |
820 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
46d29e70 | 821 | |
5443e65e | 822 | UnloadEvent(); |
46d29e70 | 823 | |
5443e65e | 824 | return 0; |
46d29e70 | 825 | |
5443e65e | 826 | } |
46d29e70 | 827 | |
c630aafd | 828 | //_____________________________________________________________________________ |
829 | Int_t AliTRDtracker::PropagateBack(AliESD* event) { | |
830 | // | |
831 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
832 | // backpropagated by the TPC tracker. Each seed is first propagated | |
833 | // to the TRD, and then its prolongation is searched in the TRD. | |
834 | // If sufficiently long continuation of the track is found in the TRD | |
835 | // the track is updated, otherwise it's stored as originaly defined | |
836 | // by the TPC tracker. | |
837 | // | |
838 | ||
839 | Int_t found=0; | |
840 | Float_t foundMin = 40; | |
841 | ||
842 | Int_t n = event->GetNumberOfTracks(); | |
843 | for (Int_t i=0; i<n; i++) { | |
844 | AliESDtrack* seed=event->GetTrack(i); | |
845 | ULong_t status=seed->GetStatus(); | |
846 | if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; | |
847 | if ( (status & AliESDtrack::kTRDout) != 0 ) continue; | |
848 | ||
849 | Int_t lbl = seed->GetLabel(); | |
850 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
851 | track->SetSeedLabel(lbl); | |
852 | fNseeds++; | |
853 | ||
854 | /*Int_t expectedClr = */FollowBackProlongation(*track); | |
855 | ||
856 | Int_t foundClr = track->GetNumberOfClusters(); | |
857 | if (foundClr >= foundMin) { | |
858 | if(foundClr >= 2) { | |
859 | track->CookdEdx(); | |
029cd327 | 860 | // CookLabel(track, 1-fgkLabelFraction); |
c630aafd | 861 | UseClusters(track); |
862 | } | |
863 | ||
864 | // Propagate to outer reference plane [SR, GSI, 18.02.2003] | |
865 | // track->PropagateTo(364.8); why? | |
866 | ||
867 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
868 | //found++; | |
869 | } | |
870 | ||
1e9bb598 | 871 | //Propagation to the TOF (I.Belikov) |
872 | Double_t xtof=378.; | |
873 | Double_t c2=track->GetC()*xtof - track->GetEta(); | |
874 | if (TMath::Abs(c2)>=0.9999999) continue; | |
875 | ||
876 | Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); | |
877 | Double_t y=track->GetYat(xtof); | |
878 | if (y > ymax) { | |
879 | if (!track->Rotate(AliTRDgeometry::GetAlpha())) return 1; | |
880 | } else if (y <-ymax) { | |
881 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) return 1; | |
882 | } | |
883 | ||
884 | if (track->PropagateTo(xtof)) { | |
c630aafd | 885 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
886 | found++; | |
887 | } | |
1e9bb598 | 888 | //End of propagation to the TOF |
c630aafd | 889 | |
890 | } | |
891 | ||
892 | cerr<<"Number of seeds: "<<fNseeds<<endl; | |
893 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
894 | ||
1e9bb598 | 895 | fSeeds->Clear(); fNseeds=0; |
896 | ||
897 | return 0; | |
898 | ||
899 | } | |
900 | ||
901 | //_____________________________________________________________________________ | |
902 | Int_t AliTRDtracker::RefitInward(AliESD* event) | |
903 | { | |
904 | // | |
905 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
906 | // at the outer part of the TRD. | |
907 | // The tracks are propagated to the innermost time bin | |
908 | // of the TRD and the ESD event is updated | |
909 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
910 | // | |
911 | ||
912 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
913 | Float_t foundMin = fgkMinClustersInTrack * timeBins; | |
914 | Int_t nseed = 0; | |
915 | Int_t found = 0; | |
916 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
917 | ||
918 | Int_t n = event->GetNumberOfTracks(); | |
919 | for (Int_t i=0; i<n; i++) { | |
920 | AliESDtrack* seed=event->GetTrack(i); | |
921 | ULong_t status=seed->GetStatus(); | |
922 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; | |
46e2d86c | 923 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; |
1e9bb598 | 924 | nseed++; |
925 | ||
926 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
46e2d86c | 927 | seed2->ResetCovariance(2.); |
1e9bb598 | 928 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
46e2d86c | 929 | UInt_t * indexes2 = seed2->GetIndexes(); |
930 | UInt_t * indexes3 = pt->GetBackupIndexes(); | |
931 | for (Int_t i=0;i<200;i++) { | |
932 | if (indexes2[i]==0) break; | |
933 | indexes3[i] = indexes2[i]; | |
934 | } | |
935 | //AliTRDtrack *pt = seed2; | |
1e9bb598 | 936 | AliTRDtrack &t=*pt; |
937 | FollowProlongation(t, innerTB); | |
46e2d86c | 938 | |
939 | if (t.GetNumberOfClusters()<seed->GetTRDclusters(indexes3)*0.5){ | |
940 | // debug - why we dont go back? | |
941 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); | |
942 | UInt_t * indexes2 = seed2->GetIndexes(); | |
943 | UInt_t * indexes3 = pt2->GetBackupIndexes(); | |
944 | for (Int_t i=0;i<200;i++) { | |
945 | if (indexes2[i]==0) break; | |
946 | indexes3[i] = indexes2[i]; | |
947 | } | |
948 | FollowProlongation(*pt2, innerTB); | |
949 | } | |
950 | ||
1e9bb598 | 951 | if (t.GetNumberOfClusters() >= foundMin) { |
46e2d86c | 952 | // UseClusters(&t); |
953 | //CookLabel(pt, 1-fgkLabelFraction); | |
1e9bb598 | 954 | // t.CookdEdx(); |
955 | } | |
956 | found++; | |
957 | // cout<<found<<'\r'; | |
958 | ||
959 | if(PropagateToTPC(t)) { | |
0fa7dfa7 | 960 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit); |
1e9bb598 | 961 | } |
962 | delete seed2; | |
963 | delete pt; | |
964 | } | |
965 | ||
966 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
967 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
968 | ||
c630aafd | 969 | return 0; |
970 | ||
971 | } | |
972 | ||
bbf92647 | 973 | |
5443e65e | 974 | //--------------------------------------------------------------------------- |
975 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) | |
976 | { | |
977 | // Starting from current position on track=t this function tries | |
978 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
979 | // if a close cluster is found. Returns the number of clusters | |
980 | // expected to be found in sensitive layers | |
bbf92647 | 981 | |
5443e65e | 982 | Float_t wIndex, wTB, wChi2; |
983 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
984 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
985 | Float_t wPx, wPy, wPz, wC; | |
029cd327 | 986 | Double_t px, py, pz; |
5443e65e | 987 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
46d29e70 | 988 | |
5443e65e | 989 | Int_t trackIndex = t.GetLabel(); |
46d29e70 | 990 | |
5443e65e | 991 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
46d29e70 | 992 | |
029cd327 | 993 | Int_t tryAgain=fMaxGap; |
46d29e70 | 994 | |
5443e65e | 995 | Double_t alpha=t.GetAlpha(); |
c630aafd | 996 | alpha = TVector2::Phi_0_2pi(alpha); |
46d29e70 | 997 | |
5443e65e | 998 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
029cd327 | 999 | Double_t radLength, rho, x, dx, y, ymax, z; |
46d29e70 | 1000 | |
5443e65e | 1001 | Int_t expectedNumberOfClusters = 0; |
1002 | Bool_t lookForCluster; | |
46d29e70 | 1003 | |
5443e65e | 1004 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 1005 | |
5443e65e | 1006 | |
1007 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
1008 | ||
1009 | y = t.GetY(); z = t.GetZ(); | |
1010 | ||
1011 | // first propagate to the inner surface of the current time bin | |
029cd327 | 1012 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1013 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 1014 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1015 | y = t.GetY(); |
1016 | ymax = x*TMath::Tan(0.5*alpha); | |
1017 | if (y > ymax) { | |
1018 | s = (s+1) % ns; | |
1019 | if (!t.Rotate(alpha)) break; | |
029cd327 | 1020 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1021 | } else if (y <-ymax) { |
1022 | s = (s-1+ns) % ns; | |
1023 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 1024 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1025 | } |
46d29e70 | 1026 | |
5443e65e | 1027 | y = t.GetY(); z = t.GetZ(); |
1028 | ||
1029 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1030 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1031 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 1032 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1033 | y = t.GetY(); |
1034 | ymax = x*TMath::Tan(0.5*alpha); | |
1035 | if (y > ymax) { | |
1036 | s = (s+1) % ns; | |
1037 | if (!t.Rotate(alpha)) break; | |
029cd327 | 1038 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1039 | } else if (y <-ymax) { |
1040 | s = (s-1+ns) % ns; | |
1041 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 1042 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 1043 | } |
46d29e70 | 1044 | |
46d29e70 | 1045 | |
5443e65e | 1046 | if(lookForCluster) { |
a819a5f7 | 1047 | |
5443e65e | 1048 | expectedNumberOfClusters++; |
5443e65e | 1049 | wIndex = (Float_t) t.GetLabel(); |
1050 | wTB = nr; | |
46d29e70 | 1051 | |
029cd327 | 1052 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); |
46d29e70 | 1053 | |
5443e65e | 1054 | Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); |
5443e65e | 1055 | Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); |
46d29e70 | 1056 | |
5443e65e | 1057 | Double_t road; |
1058 | if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); | |
1059 | else return expectedNumberOfClusters; | |
1060 | ||
1061 | wYrt = (Float_t) y; | |
1062 | wZrt = (Float_t) z; | |
1063 | wYwindow = (Float_t) road; | |
029cd327 | 1064 | t.GetPxPyPz(px,py,pz); |
1065 | wPx = (Float_t) px; | |
1066 | wPy = (Float_t) py; | |
1067 | wPz = (Float_t) pz; | |
5443e65e | 1068 | wC = (Float_t) t.GetC(); |
1069 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
1070 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
1071 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
1072 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
1073 | wChi2 = -1; | |
1074 | ||
5443e65e | 1075 | |
1076 | AliTRDcluster *cl=0; | |
1077 | UInt_t index=0; | |
1078 | ||
029cd327 | 1079 | Double_t maxChi2=fgkMaxChi2; |
5443e65e | 1080 | |
1081 | wYclosest = 12345678; | |
1082 | wYcorrect = 12345678; | |
1083 | wZclosest = 12345678; | |
1084 | wZcorrect = 12345678; | |
1085 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
1086 | ||
1087 | // Find the closest correct cluster for debugging purposes | |
029cd327 | 1088 | if (timeBin) { |
a9814c09 | 1089 | Float_t minDY = 1000000; |
029cd327 | 1090 | for (Int_t i=0; i<timeBin; i++) { |
1091 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1092 | if((c->GetLabel(0) != trackIndex) && |
1093 | (c->GetLabel(1) != trackIndex) && | |
1094 | (c->GetLabel(2) != trackIndex)) continue; | |
1095 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
1096 | minDY = TMath::Abs(c->GetY() - y); | |
1097 | wYcorrect = c->GetY(); | |
1098 | wZcorrect = c->GetZ(); | |
1099 | ||
1100 | Double_t h01 = GetTiltFactor(c); | |
1101 | wChi2 = t.GetPredictedChi2(c, h01); | |
1102 | } | |
5443e65e | 1103 | } |
46d29e70 | 1104 | |
5443e65e | 1105 | // Now go for the real cluster search |
a819a5f7 | 1106 | |
029cd327 | 1107 | if (timeBin) { |
46e2d86c | 1108 | // |
1109 | //find cluster in history | |
1110 | cl =0; | |
1111 | ||
1112 | AliTRDcluster * cl0 = timeBin[0]; | |
1113 | if (!cl0) { | |
1114 | continue; | |
1115 | } | |
1116 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); | |
1117 | Int_t timebin = cl0->GetLocalTimeBin(); | |
1118 | AliTRDcluster * cl2= GetCluster(&t,plane, timebin); | |
1119 | if (cl2) cl =cl2; | |
1120 | ||
1121 | if ((!cl) && road>fgkWideRoad) { | |
1122 | //if (t.GetNumberOfClusters()>4) | |
1123 | // cerr<<t.GetNumberOfClusters() | |
1124 | // <<"FindProlongation warning: Too broad road !\n"; | |
1125 | continue; | |
1126 | } | |
1127 | ||
1128 | ||
1129 | if(!cl){ | |
1130 | ||
1131 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { | |
1132 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
1133 | if (c->GetY() > y+road) break; | |
1134 | if (c->IsUsed() > 0) continue; | |
1135 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; | |
1136 | ||
1137 | Double_t h01 = GetTiltFactor(c); | |
1138 | Double_t chi2=t.GetPredictedChi2(c,h01); | |
1139 | ||
1140 | if (chi2 > maxChi2) continue; | |
1141 | maxChi2=chi2; | |
1142 | cl=c; | |
1143 | index=timeBin.GetIndex(i); | |
1144 | } | |
1145 | } | |
a9814c09 | 1146 | |
1147 | if(!cl) { | |
1148 | ||
029cd327 | 1149 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1150 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1151 | |
1152 | if (c->GetY() > y+road) break; | |
1153 | if (c->IsUsed() > 0) continue; | |
1154 | if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; | |
1155 | ||
1156 | Double_t h01 = GetTiltFactor(c); | |
1157 | Double_t chi2=t.GetPredictedChi2(c, h01); | |
1158 | ||
029cd327 | 1159 | if (chi2 > maxChi2) continue; |
1160 | maxChi2=chi2; | |
a9814c09 | 1161 | cl=c; |
029cd327 | 1162 | index=timeBin.GetIndex(i); |
a9814c09 | 1163 | } |
1164 | } | |
a9814c09 | 1165 | if (cl) { |
1166 | wYclosest = cl->GetY(); | |
1167 | wZclosest = cl->GetZ(); | |
1168 | Double_t h01 = GetTiltFactor(cl); | |
1169 | ||
1170 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
46e2d86c | 1171 | //printf("Track position\t%f\t%f\t%f\n",t.GetX(),t.GetY(),t.GetZ()); |
1172 | //printf("Cluster position\t%d\t%f\t%f\n",cl->GetLocalTimeBin(),cl->GetY(),cl->GetZ()); | |
1173 | ||
1174 | ||
1175 | if(!t.UpdateMI(cl,maxChi2,index,h01)) { | |
029cd327 | 1176 | if(!tryAgain--) return 0; |
a9814c09 | 1177 | } |
029cd327 | 1178 | else tryAgain=fMaxGap; |
a9814c09 | 1179 | } |
1180 | else { | |
029cd327 | 1181 | if (tryAgain==0) break; |
1182 | tryAgain--; | |
a9814c09 | 1183 | } |
1184 | ||
1185 | /* | |
1186 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
1187 | ||
1188 | printf(" %f", wIndex); //1 | |
1189 | printf(" %f", wTB); //2 | |
1190 | printf(" %f", wYrt); //3 | |
1191 | printf(" %f", wYclosest); //4 | |
1192 | printf(" %f", wYcorrect); //5 | |
1193 | printf(" %f", wYwindow); //6 | |
1194 | printf(" %f", wZrt); //7 | |
1195 | printf(" %f", wZclosest); //8 | |
1196 | printf(" %f", wZcorrect); //9 | |
1197 | printf(" %f", wZwindow); //10 | |
1198 | printf(" %f", wPx); //11 | |
1199 | printf(" %f", wPy); //12 | |
1200 | printf(" %f", wPz); //13 | |
1201 | printf(" %f", wSigmaC2*1000000); //14 | |
1202 | printf(" %f", wSigmaTgl2*1000); //15 | |
1203 | printf(" %f", wSigmaY2); //16 | |
1204 | // printf(" %f", wSigmaZ2); //17 | |
1205 | printf(" %f", wChi2); //17 | |
1206 | printf(" %f", wC); //18 | |
1207 | printf("\n"); | |
1208 | } | |
1209 | */ | |
5443e65e | 1210 | } |
1211 | } | |
1212 | } | |
1213 | return expectedNumberOfClusters; | |
1214 | ||
1215 | ||
1216 | } | |
a819a5f7 | 1217 | |
5443e65e | 1218 | //___________________________________________________________________ |
46d29e70 | 1219 | |
5443e65e | 1220 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
1221 | { | |
1222 | // Starting from current radial position of track <t> this function | |
1223 | // extrapolates the track up to outer timebin and in the sensitive | |
1224 | // layers confirms prolongation if a close cluster is found. | |
1225 | // Returns the number of clusters expected to be found in sensitive layers | |
46d29e70 | 1226 | |
5443e65e | 1227 | Float_t wIndex, wTB, wChi2; |
1228 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
1229 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
1230 | Float_t wPx, wPy, wPz, wC; | |
029cd327 | 1231 | Double_t px, py, pz; |
5443e65e | 1232 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
46d29e70 | 1233 | |
5443e65e | 1234 | Int_t trackIndex = t.GetLabel(); |
029cd327 | 1235 | Int_t tryAgain=fMaxGap; |
46d29e70 | 1236 | |
5443e65e | 1237 | Double_t alpha=t.GetAlpha(); |
9c9d2487 | 1238 | TVector2::Phi_0_2pi(alpha); |
46d29e70 | 1239 | |
9c9d2487 | 1240 | Int_t s; |
46d29e70 | 1241 | |
5443e65e | 1242 | Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); |
029cd327 | 1243 | Double_t radLength, rho, x, dx, y, ymax = 0, z; |
5443e65e | 1244 | Bool_t lookForCluster; |
a819a5f7 | 1245 | |
5443e65e | 1246 | Int_t expectedNumberOfClusters = 0; |
1247 | x = t.GetX(); | |
46d29e70 | 1248 | |
5443e65e | 1249 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 1250 | |
029cd327 | 1251 | Int_t nRefPlane = fgkFirstPlane; |
9c9d2487 | 1252 | Bool_t isNewLayer = kFALSE; |
46d29e70 | 1253 | |
9c9d2487 | 1254 | Double_t chi2; |
1255 | Double_t minDY; | |
46d29e70 | 1256 | |
9c9d2487 | 1257 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) { |
1258 | ||
1259 | y = t.GetY(); | |
1260 | z = t.GetZ(); | |
46d29e70 | 1261 | |
5443e65e | 1262 | // first propagate to the outer surface of the current time bin |
46d29e70 | 1263 | |
9c9d2487 | 1264 | s = t.GetSector(); |
029cd327 | 1265 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1266 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; |
1267 | y = t.GetY(); | |
1268 | z = t.GetZ(); | |
46d29e70 | 1269 | |
029cd327 | 1270 | if(!t.PropagateTo(x,radLength,rho)) break; |
9c9d2487 | 1271 | if (!AdjustSector(&t)) break; |
1272 | s = t.GetSector(); | |
029cd327 | 1273 | if (!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 | 1274 | |
5443e65e | 1275 | y = t.GetY(); |
9c9d2487 | 1276 | z = t.GetZ(); |
a819a5f7 | 1277 | |
9c9d2487 | 1278 | // Barrel Tracks [SR, 04.04.2003] |
46d29e70 | 1279 | |
9c9d2487 | 1280 | s = t.GetSector(); |
1281 | if (fTrSec[s]->GetLayer(nr)->IsSensitive() != | |
1282 | fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { | |
46d29e70 | 1283 | |
c630aafd | 1284 | // if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); |
9c9d2487 | 1285 | } |
46d29e70 | 1286 | |
9c9d2487 | 1287 | if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && |
1288 | ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { | |
1289 | isNewLayer = kTRUE; | |
1290 | } else {isNewLayer = kFALSE;} | |
46d29e70 | 1291 | |
5443e65e | 1292 | y = t.GetY(); |
9c9d2487 | 1293 | z = t.GetZ(); |
a819a5f7 | 1294 | |
9c9d2487 | 1295 | // now propagate to the middle plane of the next time bin |
029cd327 | 1296 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1297 | |
9c9d2487 | 1298 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); |
029cd327 | 1299 | if(!t.PropagateTo(x,radLength,rho)) break; |
9c9d2487 | 1300 | if (!AdjustSector(&t)) break; |
1301 | s = t.GetSector(); | |
029cd327 | 1302 | if(!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 | 1303 | |
9c9d2487 | 1304 | y = t.GetY(); |
1305 | z = t.GetZ(); | |
1306 | ||
1307 | if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); | |
5443e65e | 1308 | // printf("label %d, pl %d, lookForCluster %d \n", |
a9814c09 | 1309 | // trackIndex, nr+1, lookForCluster); |
5443e65e | 1310 | |
1311 | if(lookForCluster) { | |
1312 | expectedNumberOfClusters++; | |
1313 | ||
1314 | wIndex = (Float_t) t.GetLabel(); | |
1315 | wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); | |
1316 | ||
029cd327 | 1317 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); |
5443e65e | 1318 | Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); |
1319 | Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); | |
1320 | if((t.GetSigmaY2() + sy2) < 0) break; | |
1321 | Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); | |
1322 | Double_t y=t.GetY(), z=t.GetZ(); | |
1323 | ||
1324 | wYrt = (Float_t) y; | |
1325 | wZrt = (Float_t) z; | |
1326 | wYwindow = (Float_t) road; | |
029cd327 | 1327 | t.GetPxPyPz(px,py,pz); |
1328 | wPx = (Float_t) px; | |
1329 | wPy = (Float_t) py; | |
1330 | wPz = (Float_t) pz; | |
5443e65e | 1331 | wC = (Float_t) t.GetC(); |
1332 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
1333 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
1334 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
1335 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
1336 | wChi2 = -1; | |
1337 | ||
029cd327 | 1338 | if (road>fgkWideRoad) { |
a9814c09 | 1339 | if (t.GetNumberOfClusters()>4) |
1340 | cerr<<t.GetNumberOfClusters() | |
1341 | <<"FindProlongation warning: Too broad road !\n"; | |
1342 | return 0; | |
5443e65e | 1343 | } |
1344 | ||
1345 | AliTRDcluster *cl=0; | |
1346 | UInt_t index=0; | |
1347 | ||
029cd327 | 1348 | Double_t maxChi2=fgkMaxChi2; |
5443e65e | 1349 | |
9c9d2487 | 1350 | if (isNewLayer) { |
1351 | road = 3 * road; | |
1352 | //sz2 = 3 * sz2; | |
029cd327 | 1353 | maxChi2 = 10 * fgkMaxChi2; |
9c9d2487 | 1354 | } |
1355 | ||
029cd327 | 1356 | if (nRefPlane == fgkFirstPlane) maxChi2 = 20 * fgkMaxChi2; |
1357 | if (nRefPlane == fgkFirstPlane+2) maxChi2 = 15 * fgkMaxChi2; | |
1358 | if (t.GetNRotate() > 0) maxChi2 = 3 * maxChi2; | |
9c9d2487 | 1359 | |
1360 | ||
5443e65e | 1361 | wYclosest = 12345678; |
1362 | wYcorrect = 12345678; | |
1363 | wZclosest = 12345678; | |
1364 | wZcorrect = 12345678; | |
1365 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
1366 | ||
1367 | // Find the closest correct cluster for debugging purposes | |
029cd327 | 1368 | if (timeBin) { |
9c9d2487 | 1369 | minDY = 1000000; |
029cd327 | 1370 | for (Int_t i=0; i<timeBin; i++) { |
1371 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1372 | if((c->GetLabel(0) != trackIndex) && |
1373 | (c->GetLabel(1) != trackIndex) && | |
1374 | (c->GetLabel(2) != trackIndex)) continue; | |
1375 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
9c9d2487 | 1376 | //minDY = TMath::Abs(c->GetY() - y); |
1377 | minDY = c->GetY() - y; | |
a9814c09 | 1378 | wYcorrect = c->GetY(); |
1379 | wZcorrect = c->GetZ(); | |
1380 | ||
1381 | Double_t h01 = GetTiltFactor(c); | |
1382 | wChi2 = t.GetPredictedChi2(c, h01); | |
1383 | } | |
5443e65e | 1384 | } |
46d29e70 | 1385 | |
5443e65e | 1386 | // Now go for the real cluster search |
46d29e70 | 1387 | |
029cd327 | 1388 | if (timeBin) { |
5443e65e | 1389 | |
029cd327 | 1390 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1391 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1392 | if (c->GetY() > y+road) break; |
9c9d2487 | 1393 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1394 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; |
1395 | ||
1396 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1397 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1398 | |
029cd327 | 1399 | if (chi2 > maxChi2) continue; |
1400 | maxChi2=chi2; | |
a9814c09 | 1401 | cl=c; |
029cd327 | 1402 | index=timeBin.GetIndex(i); |
9c9d2487 | 1403 | |
1404 | //check is correct | |
1405 | if((c->GetLabel(0) != trackIndex) && | |
1406 | (c->GetLabel(1) != trackIndex) && | |
1407 | (c->GetLabel(2) != trackIndex)) t.AddNWrong(); | |
a9814c09 | 1408 | } |
5443e65e | 1409 | |
a9814c09 | 1410 | if(!cl) { |
1411 | ||
029cd327 | 1412 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1413 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 1414 | |
1415 | if (c->GetY() > y+road) break; | |
9c9d2487 | 1416 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1417 | if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; |
1418 | ||
1419 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1420 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1421 | |
029cd327 | 1422 | if (chi2 > maxChi2) continue; |
1423 | maxChi2=chi2; | |
a9814c09 | 1424 | cl=c; |
029cd327 | 1425 | index=timeBin.GetIndex(i); |
a9814c09 | 1426 | } |
1427 | } | |
1428 | ||
1429 | if (cl) { | |
1430 | wYclosest = cl->GetY(); | |
1431 | wZclosest = cl->GetZ(); | |
1432 | ||
1433 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1434 | Double_t h01 = GetTiltFactor(cl); | |
46e2d86c | 1435 | if(!t.UpdateMI(cl,maxChi2,index,h01)) { |
029cd327 | 1436 | if(!tryAgain--) return 0; |
a9814c09 | 1437 | } |
029cd327 | 1438 | else tryAgain=fMaxGap; |
a9814c09 | 1439 | } |
1440 | else { | |
029cd327 | 1441 | if (tryAgain==0) break; |
1442 | tryAgain--; | |
9c9d2487 | 1443 | |
1444 | //if (minDY < 1000000 && isNewLayer) | |
1445 | //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" << | |
029cd327 | 1446 | // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << maxChi2 << endl; |
9c9d2487 | 1447 | |
a9814c09 | 1448 | } |
1449 | ||
9c9d2487 | 1450 | isNewLayer = kFALSE; |
1451 | ||
a9814c09 | 1452 | /* |
1453 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
1454 | ||
1455 | printf(" %f", wIndex); //1 | |
1456 | printf(" %f", wTB); //2 | |
1457 | printf(" %f", wYrt); //3 | |
1458 | printf(" %f", wYclosest); //4 | |
1459 | printf(" %f", wYcorrect); //5 | |
1460 | printf(" %f", wYwindow); //6 | |
1461 | printf(" %f", wZrt); //7 | |
1462 | printf(" %f", wZclosest); //8 | |
1463 | printf(" %f", wZcorrect); //9 | |
1464 | printf(" %f", wZwindow); //10 | |
1465 | printf(" %f", wPx); //11 | |
1466 | printf(" %f", wPy); //12 | |
1467 | printf(" %f", wPz); //13 | |
1468 | printf(" %f", wSigmaC2*1000000); //14 | |
1469 | printf(" %f", wSigmaTgl2*1000); //15 | |
1470 | printf(" %f", wSigmaY2); //16 | |
1471 | // printf(" %f", wSigmaZ2); //17 | |
1472 | printf(" %f", wChi2); //17 | |
1473 | printf(" %f", wC); //18 | |
1474 | printf("\n"); | |
1475 | } | |
1476 | */ | |
5443e65e | 1477 | } |
1478 | } | |
1479 | } | |
1480 | return expectedNumberOfClusters; | |
9c9d2487 | 1481 | |
1482 | ||
5443e65e | 1483 | } |
1484 | ||
1e9bb598 | 1485 | //--------------------------------------------------------------------------- |
1486 | Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf) | |
1487 | { | |
1488 | // Starting from current position on track=t this function tries | |
1489 | // to extrapolate the track up to timeBin=0 and to reuse already | |
1490 | // assigned clusters. Returns the number of clusters | |
1491 | // expected to be found in sensitive layers | |
1492 | // get indices of assigned clusters for each layer | |
1493 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
1494 | ||
1495 | Int_t iCluster[90]; | |
1496 | for (Int_t i = 0; i < 90; i++) iCluster[i] = 0; | |
1497 | for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) { | |
1498 | Int_t index = t.GetClusterIndex(i); | |
1499 | AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index); | |
1500 | if (!cl) continue; | |
1501 | Int_t detector=cl->GetDetector(); | |
1502 | Int_t localTimeBin=cl->GetLocalTimeBin(); | |
1503 | Int_t sector=fGeom->GetSector(detector); | |
1504 | Int_t plane=fGeom->GetPlane(detector); | |
1505 | ||
1506 | Int_t trackingSector = CookSectorIndex(sector); | |
1507 | ||
1508 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); | |
1509 | if(gtb < 0) continue; | |
1510 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); | |
1511 | iCluster[layer] = index; | |
1512 | } | |
1513 | t.ResetClusters(); | |
1514 | ||
1515 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1516 | ||
1517 | Double_t alpha=t.GetAlpha(); | |
1518 | alpha = TVector2::Phi_0_2pi(alpha); | |
1519 | ||
1520 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1521 | Double_t radLength, rho, x, dx, y, ymax, z; | |
1522 | ||
1523 | Int_t expectedNumberOfClusters = 0; | |
1524 | Bool_t lookForCluster; | |
1525 | ||
1526 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1527 | ||
1528 | ||
1529 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
1530 | ||
1531 | y = t.GetY(); z = t.GetZ(); | |
1532 | ||
1533 | // first propagate to the inner surface of the current time bin | |
1534 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1535 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); | |
1536 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1537 | y = t.GetY(); | |
1538 | ymax = x*TMath::Tan(0.5*alpha); | |
1539 | if (y > ymax) { | |
1540 | s = (s+1) % ns; | |
1541 | if (!t.Rotate(alpha)) break; | |
1542 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1543 | } else if (y <-ymax) { | |
1544 | s = (s-1+ns) % ns; | |
1545 | if (!t.Rotate(-alpha)) break; | |
1546 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1547 | } | |
1548 | ||
1549 | y = t.GetY(); z = t.GetZ(); | |
1550 | ||
1551 | // now propagate to the middle plane of the next time bin | |
1552 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1553 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); | |
1554 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1555 | y = t.GetY(); | |
1556 | ymax = x*TMath::Tan(0.5*alpha); | |
1557 | if (y > ymax) { | |
1558 | s = (s+1) % ns; | |
1559 | if (!t.Rotate(alpha)) break; | |
1560 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1561 | } else if (y <-ymax) { | |
1562 | s = (s-1+ns) % ns; | |
1563 | if (!t.Rotate(-alpha)) break; | |
1564 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1565 | } | |
1566 | ||
1567 | if(lookForCluster) expectedNumberOfClusters++; | |
1568 | ||
1569 | // use assigned cluster | |
1570 | if (!iCluster[nr-1]) continue; | |
1571 | AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); | |
1572 | Double_t h01 = GetTiltFactor(cl); | |
1573 | Double_t chi2=t.GetPredictedChi2(cl, h01); | |
1574 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1575 | t.Update(cl,chi2,iCluster[nr-1],h01); | |
1576 | } | |
1577 | ||
1578 | return expectedNumberOfClusters; | |
1579 | } | |
1580 | ||
5443e65e | 1581 | //___________________________________________________________________ |
1582 | ||
1583 | Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) | |
1584 | { | |
1585 | // Starting from current radial position of track <t> this function | |
1586 | // extrapolates the track up to radial position <xToGo>. | |
1587 | // Returns 1 if track reaches the plane, and 0 otherwise | |
1588 | ||
1589 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1590 | ||
1591 | Double_t alpha=t.GetAlpha(); | |
1592 | ||
1593 | if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); | |
1594 | if (alpha < 0. ) alpha += 2.*TMath::Pi(); | |
1595 | ||
1596 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1597 | ||
1598 | Bool_t lookForCluster; | |
029cd327 | 1599 | Double_t radLength, rho, x, dx, y, ymax, z; |
5443e65e | 1600 | |
1601 | x = t.GetX(); | |
1602 | ||
1603 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1604 | ||
1605 | Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); | |
1606 | ||
1607 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr<plToGo; nr++) { | |
1608 | ||
1609 | y = t.GetY(); z = t.GetZ(); | |
1610 | ||
1611 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1612 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1613 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 1614 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1615 | y = t.GetY(); |
1616 | ymax = x*TMath::Tan(0.5*alpha); | |
1617 | if (y > ymax) { | |
1618 | s = (s+1) % ns; | |
1619 | if (!t.Rotate(alpha)) return 0; | |
1620 | } else if (y <-ymax) { | |
1621 | s = (s-1+ns) % ns; | |
1622 | if (!t.Rotate(-alpha)) return 0; | |
1623 | } | |
029cd327 | 1624 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1625 | |
1626 | y = t.GetY(); z = t.GetZ(); | |
1627 | ||
1628 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1629 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1630 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 1631 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1632 | y = t.GetY(); |
1633 | ymax = x*TMath::Tan(0.5*alpha); | |
1634 | if (y > ymax) { | |
1635 | s = (s+1) % ns; | |
1636 | if (!t.Rotate(alpha)) return 0; | |
1637 | } else if (y <-ymax) { | |
1638 | s = (s-1+ns) % ns; | |
1639 | if (!t.Rotate(-alpha)) return 0; | |
1640 | } | |
029cd327 | 1641 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1642 | } |
1643 | return 1; | |
1644 | } | |
1645 | ||
1646 | //___________________________________________________________________ | |
1647 | ||
1648 | Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) | |
1649 | { | |
1650 | // Starting from current radial position of track <t> this function | |
1651 | // extrapolates the track up to radial position of the outermost | |
1652 | // padrow of the TPC. | |
1653 | // Returns 1 if track reaches the TPC, and 0 otherwise | |
1654 | ||
c630aafd | 1655 | //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
5443e65e | 1656 | |
1657 | Double_t alpha=t.GetAlpha(); | |
c630aafd | 1658 | alpha = TVector2::Phi_0_2pi(alpha); |
5443e65e | 1659 | |
1660 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1661 | ||
1662 | Bool_t lookForCluster; | |
029cd327 | 1663 | Double_t radLength, rho, x, dx, y, /*ymax,*/ z; |
5443e65e | 1664 | |
1665 | x = t.GetX(); | |
1666 | ||
1667 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
5443e65e | 1668 | Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); |
1669 | ||
1670 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { | |
1671 | ||
9c9d2487 | 1672 | y = t.GetY(); |
1673 | z = t.GetZ(); | |
5443e65e | 1674 | |
1675 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1676 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1677 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; |
1678 | ||
029cd327 | 1679 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1680 | AdjustSector(&t); |
029cd327 | 1681 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1682 | |
9c9d2487 | 1683 | y = t.GetY(); |
1684 | z = t.GetZ(); | |
5443e65e | 1685 | |
1686 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1687 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1688 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); |
1689 | ||
029cd327 | 1690 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1691 | AdjustSector(&t); |
029cd327 | 1692 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1693 | } |
1694 | return 1; | |
1695 | } | |
1696 | ||
5443e65e | 1697 | void AliTRDtracker::LoadEvent() |
1698 | { | |
1699 | // Fills clusters into TRD tracking_sectors | |
1700 | // Note that the numbering scheme for the TRD tracking_sectors | |
1701 | // differs from that of TRD sectors | |
1702 | ||
1703 | ReadClusters(fClusters); | |
1704 | Int_t ncl=fClusters->GetEntriesFast(); | |
1705 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; | |
1706 | ||
1707 | UInt_t index; | |
1708 | while (ncl--) { | |
e24ea474 | 1709 | // printf("\r %d left ",ncl); |
5443e65e | 1710 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); |
029cd327 | 1711 | Int_t detector=c->GetDetector(); |
1712 | Int_t localTimeBin=c->GetLocalTimeBin(); | |
5443e65e | 1713 | Int_t sector=fGeom->GetSector(detector); |
1714 | Int_t plane=fGeom->GetPlane(detector); | |
1715 | ||
029cd327 | 1716 | Int_t trackingSector = CookSectorIndex(sector); |
5443e65e | 1717 | |
029cd327 | 1718 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
b3a5a838 | 1719 | if(gtb < 0) continue; |
029cd327 | 1720 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
5443e65e | 1721 | |
1722 | index=ncl; | |
029cd327 | 1723 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
5443e65e | 1724 | } |
1725 | printf("\r\n"); | |
1726 | ||
1727 | } | |
1728 | ||
c630aafd | 1729 | //_____________________________________________________________________________ |
1730 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1731 | { | |
1732 | // Fills clusters into TRD tracking_sectors | |
1733 | // Note that the numbering scheme for the TRD tracking_sectors | |
1734 | // differs from that of TRD sectors | |
1735 | ||
1736 | if (ReadClusters(fClusters,cTree)) { | |
1737 | Error("LoadClusters","Problem with reading the clusters !"); | |
1738 | return 1; | |
1739 | } | |
1740 | Int_t ncl=fClusters->GetEntriesFast(); | |
1741 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; | |
1742 | ||
1743 | UInt_t index; | |
1744 | while (ncl--) { | |
1745 | // printf("\r %d left ",ncl); | |
1746 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); | |
029cd327 | 1747 | Int_t detector=c->GetDetector(); |
1748 | Int_t localTimeBin=c->GetLocalTimeBin(); | |
c630aafd | 1749 | Int_t sector=fGeom->GetSector(detector); |
1750 | Int_t plane=fGeom->GetPlane(detector); | |
1751 | ||
029cd327 | 1752 | Int_t trackingSector = CookSectorIndex(sector); |
c630aafd | 1753 | |
029cd327 | 1754 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
c630aafd | 1755 | if(gtb < 0) continue; |
029cd327 | 1756 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1757 | |
1758 | index=ncl; | |
029cd327 | 1759 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
c630aafd | 1760 | } |
1761 | printf("\r\n"); | |
1762 | ||
1763 | return 0; | |
1764 | } | |
1765 | ||
5443e65e | 1766 | //_____________________________________________________________________________ |
1767 | void AliTRDtracker::UnloadEvent() | |
1768 | { | |
1769 | // | |
1770 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1771 | // | |
1772 | ||
1773 | Int_t i, nentr; | |
1774 | ||
1775 | nentr = fClusters->GetEntriesFast(); | |
1776 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); | |
1777 | ||
1778 | nentr = fSeeds->GetEntriesFast(); | |
1779 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); | |
1780 | ||
1781 | nentr = fTracks->GetEntriesFast(); | |
1782 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); | |
1783 | ||
1784 | Int_t nsec = AliTRDgeometry::kNsect; | |
1785 | ||
1786 | for (i = 0; i < nsec; i++) { | |
1787 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1788 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | } | |
1793 | ||
1794 | //__________________________________________________________________________ | |
1795 | void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) | |
1796 | { | |
1797 | // Creates track seeds using clusters in timeBins=i1,i2 | |
1798 | ||
1799 | if(turn > 2) { | |
1800 | cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl; | |
1801 | return; | |
1802 | } | |
1803 | ||
1804 | Double_t x[5], c[15]; | |
029cd327 | 1805 | Int_t maxSec=AliTRDgeometry::kNsect; |
5443e65e | 1806 | |
1807 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
1808 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; | |
1809 | Double_t cs=cos(alpha), sn=sin(alpha); | |
1810 | Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); | |
1811 | ||
1812 | ||
1813 | Int_t i2 = fTrSec[0]->GetLayerNumber(inner); | |
1814 | Int_t i1 = fTrSec[0]->GetLayerNumber(outer); | |
1815 | ||
1816 | Double_t x1 =fTrSec[0]->GetX(i1); | |
1817 | Double_t xx2=fTrSec[0]->GetX(i2); | |
1818 | ||
029cd327 | 1819 | for (Int_t ns=0; ns<maxSec; ns++) { |
5443e65e | 1820 | |
029cd327 | 1821 | Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
1822 | Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); | |
5443e65e | 1823 | Int_t nm=(*fTrSec[ns]->GetLayer(i2)); |
029cd327 | 1824 | Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
1825 | Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); | |
5443e65e | 1826 | |
1827 | AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); | |
1828 | ||
1829 | for (Int_t is=0; is < r1; is++) { | |
1830 | Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); | |
1831 | ||
1832 | for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { | |
a9814c09 | 1833 | |
1834 | const AliTRDcluster *cl; | |
1835 | Double_t x2, y2, z2; | |
1836 | Double_t x3=0., y3=0.; | |
1837 | ||
1838 | if (js<nl2) { | |
1839 | if(turn != 2) continue; | |
029cd327 | 1840 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1841 | cl=r2[js]; |
1842 | y2=cl->GetY(); z2=cl->GetZ(); | |
1843 | ||
1844 | x2= xx2*cs2+y2*sn2; | |
1845 | y2=-xx2*sn2+y2*cs2; | |
1846 | } | |
1847 | else if (js<nl2+nl) { | |
1848 | if(turn != 1) continue; | |
029cd327 | 1849 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1850 | cl=r2[js-nl2]; |
1851 | y2=cl->GetY(); z2=cl->GetZ(); | |
1852 | ||
1853 | x2= xx2*cs+y2*sn; | |
1854 | y2=-xx2*sn+y2*cs; | |
1855 | } | |
1856 | else if (js<nl2+nl+nm) { | |
1857 | if(turn != 1) continue; | |
1858 | AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2)); | |
1859 | cl=r2[js-nl2-nl]; | |
1860 | x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); | |
1861 | } | |
1862 | else if (js<nl2+nl+nm+nu) { | |
1863 | if(turn != 1) continue; | |
029cd327 | 1864 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
a9814c09 | 1865 | cl=r2[js-nl2-nl-nm]; |
1866 | y2=cl->GetY(); z2=cl->GetZ(); | |
1867 | ||
1868 | x2=xx2*cs-y2*sn; | |
1869 | y2=xx2*sn+y2*cs; | |
1870 | } | |
1871 | else { | |
1872 | if(turn != 2) continue; | |
029cd327 | 1873 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); |
a9814c09 | 1874 | cl=r2[js-nl2-nl-nm-nu]; |
1875 | y2=cl->GetY(); z2=cl->GetZ(); | |
1876 | ||
1877 | x2=xx2*cs2-y2*sn2; | |
1878 | y2=xx2*sn2+y2*cs2; | |
1879 | } | |
1880 | ||
029cd327 | 1881 | if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; |
a9814c09 | 1882 | |
1883 | Double_t zz=z1 - z1/x1*(x1-x2); | |
1884 | ||
029cd327 | 1885 | if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; |
a9814c09 | 1886 | |
1887 | Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); | |
1888 | if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} | |
1889 | ||
1890 | x[0]=y1; | |
1891 | x[1]=z1; | |
1892 | x[4]=f1trd(x1,y1,x2,y2,x3,y3); | |
1893 | ||
029cd327 | 1894 | if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; |
a9814c09 | 1895 | |
1896 | x[2]=f2trd(x1,y1,x2,y2,x3,y3); | |
1897 | ||
1898 | if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; | |
1899 | ||
1900 | x[3]=f3trd(x1,y1,x2,y2,z1,z2); | |
1901 | ||
029cd327 | 1902 | if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; |
a9814c09 | 1903 | |
1904 | Double_t a=asin(x[2]); | |
1905 | Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); | |
1906 | ||
029cd327 | 1907 | if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; |
a9814c09 | 1908 | |
1909 | Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); | |
1910 | Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); | |
029cd327 | 1911 | Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; |
a9814c09 | 1912 | |
1913 | // Tilt changes | |
1914 | Double_t h01 = GetTiltFactor(r1[is]); | |
029cd327 | 1915 | Double_t xuFactor = 100.; |
b8dc2353 | 1916 | if(fNoTilt) { |
1917 | h01 = 0; | |
029cd327 | 1918 | xuFactor = 1; |
b8dc2353 | 1919 | } |
1920 | ||
fd621f36 | 1921 | sy1=sy1+sz1*h01*h01; |
b3a5a838 | 1922 | Double_t syz=sz1*(-h01); |
a9814c09 | 1923 | // end of tilt changes |
1924 | ||
b3a5a838 | 1925 | Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; |
1926 | Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; | |
1927 | Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; | |
1928 | Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; | |
1929 | Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; | |
1930 | Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; | |
1931 | Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; | |
1932 | Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; | |
1933 | Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; | |
1934 | Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; | |
1935 | ||
a9814c09 | 1936 | |
b3a5a838 | 1937 | c[0]=sy1; |
a9814c09 | 1938 | // c[1]=0.; c[2]=sz1; |
029cd327 | 1939 | c[1]=syz; c[2]=sz1*xuFactor; |
b3a5a838 | 1940 | c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; |
1941 | c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; | |
1942 | c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; | |
1943 | c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; | |
1944 | c[13]=f30*sy1*f40+f32*sy2*f42; | |
1945 | c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; | |
a9814c09 | 1946 | |
1947 | UInt_t index=r1.GetIndex(is); | |
1948 | ||
1949 | AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); | |
1950 | ||
1951 | Int_t rc=FollowProlongation(*track, i2); | |
1952 | ||
1953 | if ((rc < 1) || | |
1954 | (track->GetNumberOfClusters() < | |
029cd327 | 1955 | (outer-inner)*fgkMinClustersInSeed)) delete track; |
a9814c09 | 1956 | else { |
1957 | fSeeds->AddLast(track); fNseeds++; | |
e24ea474 | 1958 | // cerr<<"\r found seed "<<fNseeds; |
a9814c09 | 1959 | } |
5443e65e | 1960 | } |
1961 | } | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | //_____________________________________________________________________________ | |
c630aafd | 1966 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) |
5443e65e | 1967 | { |
1968 | // | |
a819a5f7 | 1969 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
1970 | // from the file. The names of the cluster tree and branches | |
1971 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
1972 | // | |
029cd327 | 1973 | TObjArray *clusterArray = new TObjArray(400); |
5443e65e | 1974 | |
c630aafd | 1975 | TBranch *branch=ClusterTree->GetBranch("TRDcluster"); |
1976 | if (!branch) { | |
1977 | Error("ReadClusters","Can't get the branch !"); | |
1978 | return 1; | |
1979 | } | |
029cd327 | 1980 | branch->SetAddress(&clusterArray); |
5443e65e | 1981 | |
1982 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); | |
1983 | printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); | |
a819a5f7 | 1984 | |
a819a5f7 | 1985 | // Loop through all entries in the tree |
1986 | Int_t nbytes; | |
1987 | AliTRDcluster *c = 0; | |
5443e65e | 1988 | printf("\n"); |
a819a5f7 | 1989 | |
1990 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { | |
1991 | ||
1992 | // Import the tree | |
5443e65e | 1993 | nbytes += ClusterTree->GetEvent(iEntry); |
1994 | ||
a819a5f7 | 1995 | // Get the number of points in the detector |
029cd327 | 1996 | Int_t nCluster = clusterArray->GetEntriesFast(); |
e24ea474 | 1997 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 1998 | |
a819a5f7 | 1999 | // Loop through all TRD digits |
2000 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
029cd327 | 2001 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
a819a5f7 | 2002 | AliTRDcluster *co = new AliTRDcluster(*c); |
2003 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
5443e65e | 2004 | Int_t ltb = co->GetLocalTimeBin(); |
b8dc2353 | 2005 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
2006 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
a819a5f7 | 2007 | array->AddLast(co); |
029cd327 | 2008 | delete clusterArray->RemoveAt(iCluster); |
a819a5f7 | 2009 | } |
2010 | } | |
2011 | ||
029cd327 | 2012 | delete clusterArray; |
5443e65e | 2013 | |
c630aafd | 2014 | return 0; |
a819a5f7 | 2015 | } |
2016 | ||
5443e65e | 2017 | //______________________________________________________________________ |
2018 | void AliTRDtracker::ReadClusters(TObjArray *array, const Char_t *filename) | |
a819a5f7 | 2019 | { |
2020 | // | |
5443e65e | 2021 | // Reads AliTRDclusters from file <filename>. The names of the cluster |
2022 | // tree and branches should match the ones used in | |
2023 | // AliTRDclusterizer::WriteClusters() | |
2024 | // if <array> == 0, clusters are added into AliTRDtracker fCluster array | |
a819a5f7 | 2025 | // |
2026 | ||
5443e65e | 2027 | TDirectory *savedir=gDirectory; |
46d29e70 | 2028 | |
5443e65e | 2029 | TFile *file = TFile::Open(filename); |
2030 | if (!file->IsOpen()) { | |
2031 | cerr<<"Can't open file with TRD clusters"<<endl; | |
2032 | return; | |
2033 | } | |
46d29e70 | 2034 | |
5443e65e | 2035 | Char_t treeName[12]; |
e24ea474 | 2036 | sprintf(treeName,"TreeR%d_TRD",GetEventNumber()); |
029cd327 | 2037 | TTree *clusterTree = (TTree*) gDirectory->Get(treeName); |
46d29e70 | 2038 | |
029cd327 | 2039 | if (!clusterTree) { |
5443e65e | 2040 | cerr<<"AliTRDtracker::ReadClusters(): "; |
2041 | cerr<<"can't get a tree with clusters !\n"; | |
2042 | return; | |
2043 | } | |
46d29e70 | 2044 | |
029cd327 | 2045 | TObjArray *clusterArray = new TObjArray(400); |
46d29e70 | 2046 | |
029cd327 | 2047 | clusterTree->GetBranch("TRDcluster")->SetAddress(&clusterArray); |
46d29e70 | 2048 | |
029cd327 | 2049 | Int_t nEntries = (Int_t) clusterTree->GetEntries(); |
2050 | cout<<"found "<<nEntries<<" in clusterTree"<<endl; | |
a819a5f7 | 2051 | |
5443e65e | 2052 | // Loop through all entries in the tree |
2053 | Int_t nbytes; | |
2054 | AliTRDcluster *c = 0; | |
bbf92647 | 2055 | |
5443e65e | 2056 | printf("\n"); |
bbf92647 | 2057 | |
5443e65e | 2058 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
46d29e70 | 2059 | |
5443e65e | 2060 | // Import the tree |
029cd327 | 2061 | nbytes += clusterTree->GetEvent(iEntry); |
0a29d0f1 | 2062 | |
5443e65e | 2063 | // Get the number of points in the detector |
029cd327 | 2064 | Int_t nCluster = clusterArray->GetEntriesFast(); |
b3a5a838 | 2065 | printf("\n Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 2066 | |
2067 | // Loop through all TRD digits | |
2068 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
029cd327 | 2069 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
5443e65e | 2070 | AliTRDcluster *co = new AliTRDcluster(*c); |
2071 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
2072 | Int_t ltb = co->GetLocalTimeBin(); | |
b8dc2353 | 2073 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
2074 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
5443e65e | 2075 | array->AddLast(co); |
029cd327 | 2076 | delete clusterArray->RemoveAt(iCluster); |
5443e65e | 2077 | } |
46d29e70 | 2078 | } |
0a29d0f1 | 2079 | |
5443e65e | 2080 | file->Close(); |
029cd327 | 2081 | delete clusterArray; |
5443e65e | 2082 | savedir->cd(); |
2083 | ||
2084 | } | |
2085 | ||
c630aafd | 2086 | void AliTRDtracker::ReadClusters(TObjArray *array, const TFile *inp) |
2087 | { | |
2088 | // | |
2089 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) | |
2090 | // from the file. The names of the cluster tree and branches | |
2091 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
2092 | // | |
2093 | ||
2094 | TDirectory *savedir=gDirectory; | |
2095 | ||
2096 | if (inp) { | |
2097 | TFile *in=(TFile*)inp; | |
2098 | if (!in->IsOpen()) { | |
2099 | cerr<<"AliTRDtracker::ReadClusters(): input file is not open !\n"; | |
2100 | return; | |
2101 | } | |
2102 | else{ | |
2103 | in->cd(); | |
2104 | } | |
2105 | } | |
2106 | ||
2107 | Char_t treeName[12]; | |
2108 | sprintf(treeName,"TreeR%d_TRD",GetEventNumber()); | |
029cd327 | 2109 | TTree *clusterTree = (TTree*) gDirectory->Get(treeName); |
c630aafd | 2110 | |
029cd327 | 2111 | TObjArray *clusterArray = new TObjArray(400); |
c630aafd | 2112 | |
029cd327 | 2113 | clusterTree->GetBranch("TRDcluster")->SetAddress(&clusterArray); |
c630aafd | 2114 | |
029cd327 | 2115 | Int_t nEntries = (Int_t) clusterTree->GetEntries(); |
2116 | printf("found %d entries in %s.\n",nEntries,clusterTree->GetName()); | |
c630aafd | 2117 | |
2118 | // Loop through all entries in the tree | |
2119 | Int_t nbytes; | |
2120 | AliTRDcluster *c = 0; | |
2121 | printf("\n"); | |
2122 | ||
2123 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { | |
2124 | ||
2125 | // Import the tree | |
029cd327 | 2126 | nbytes += clusterTree->GetEvent(iEntry); |
c630aafd | 2127 | |
2128 | // Get the number of points in the detector | |
029cd327 | 2129 | Int_t nCluster = clusterArray->GetEntriesFast(); |
c630aafd | 2130 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
2131 | ||
2132 | // Loop through all TRD digits | |
2133 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
029cd327 | 2134 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
c630aafd | 2135 | AliTRDcluster *co = new AliTRDcluster(*c); |
2136 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
2137 | Int_t ltb = co->GetLocalTimeBin(); | |
2138 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); | |
2139 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
2140 | array->AddLast(co); | |
029cd327 | 2141 | delete clusterArray->RemoveAt(iCluster); |
c630aafd | 2142 | } |
2143 | } | |
2144 | ||
029cd327 | 2145 | delete clusterArray; |
c630aafd | 2146 | savedir->cd(); |
2147 | ||
2148 | } | |
46d29e70 | 2149 | |
2150 | //__________________________________________________________________ | |
029cd327 | 2151 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const |
2152 | { | |
2153 | // | |
2154 | // This cooks a label. Mmmmh, smells good... | |
2155 | // | |
46d29e70 | 2156 | |
2157 | Int_t label=123456789, index, i, j; | |
5443e65e | 2158 | Int_t ncl=pt->GetNumberOfClusters(); |
029cd327 | 2159 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; |
5443e65e | 2160 | |
029cd327 | 2161 | Bool_t labelAdded; |
46d29e70 | 2162 | |
029cd327 | 2163 | // Int_t s[kRange][2]; |
2164 | Int_t **s = new Int_t* [kRange]; | |
2165 | for (i=0; i<kRange; i++) { | |
d1b06c24 | 2166 | s[i] = new Int_t[2]; |
2167 | } | |
029cd327 | 2168 | for (i=0; i<kRange; i++) { |
46d29e70 | 2169 | s[i][0]=-1; |
2170 | s[i][1]=0; | |
2171 | } | |
2172 | ||
2173 | Int_t t0,t1,t2; | |
2174 | for (i=0; i<ncl; i++) { | |
5443e65e | 2175 | index=pt->GetClusterIndex(i); |
46d29e70 | 2176 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
5443e65e | 2177 | t0=c->GetLabel(0); |
2178 | t1=c->GetLabel(1); | |
2179 | t2=c->GetLabel(2); | |
46d29e70 | 2180 | } |
2181 | ||
2182 | for (i=0; i<ncl; i++) { | |
5443e65e | 2183 | index=pt->GetClusterIndex(i); |
46d29e70 | 2184 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
2185 | for (Int_t k=0; k<3; k++) { | |
5443e65e | 2186 | label=c->GetLabel(k); |
029cd327 | 2187 | labelAdded=kFALSE; j=0; |
46d29e70 | 2188 | if (label >= 0) { |
029cd327 | 2189 | while ( (!labelAdded) && ( j < kRange ) ) { |
a9814c09 | 2190 | if (s[j][0]==label || s[j][1]==0) { |
2191 | s[j][0]=label; | |
2192 | s[j][1]=s[j][1]+1; | |
029cd327 | 2193 | labelAdded=kTRUE; |
a9814c09 | 2194 | } |
2195 | j++; | |
2196 | } | |
46d29e70 | 2197 | } |
2198 | } | |
2199 | } | |
2200 | ||
46d29e70 | 2201 | Int_t max=0; |
2202 | label = -123456789; | |
2203 | ||
029cd327 | 2204 | for (i=0; i<kRange; i++) { |
46d29e70 | 2205 | if (s[i][1]>max) { |
2206 | max=s[i][1]; label=s[i][0]; | |
2207 | } | |
2208 | } | |
5443e65e | 2209 | |
029cd327 | 2210 | for (i=0; i<kRange; i++) { |
5443e65e | 2211 | delete []s[i]; |
2212 | } | |
2213 | ||
d1b06c24 | 2214 | delete []s; |
5443e65e | 2215 | |
2216 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; | |
2217 | ||
2218 | pt->SetLabel(label); | |
2219 | ||
46d29e70 | 2220 | } |
2221 | ||
c630aafd | 2222 | |
5443e65e | 2223 | //__________________________________________________________________ |
029cd327 | 2224 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const |
2225 | { | |
2226 | // | |
2227 | // Use clusters, but don't abuse them! | |
2228 | // | |
2229 | ||
5443e65e | 2230 | Int_t ncl=t->GetNumberOfClusters(); |
2231 | for (Int_t i=from; i<ncl; i++) { | |
2232 | Int_t index = t->GetClusterIndex(i); | |
2233 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
2234 | c->Use(); | |
2235 | } | |
2236 | } | |
2237 | ||
2238 | ||
2239 | //_____________________________________________________________________ | |
029cd327 | 2240 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 2241 | { |
2242 | // Parametrised "expected" error of the cluster reconstruction in Y | |
2243 | ||
2244 | Double_t s = 0.08 * 0.08; | |
2245 | return s; | |
2246 | } | |
2247 | ||
2248 | //_____________________________________________________________________ | |
029cd327 | 2249 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 2250 | { |
5443e65e | 2251 | // Parametrised "expected" error of the cluster reconstruction in Z |
2252 | ||
a9814c09 | 2253 | Double_t s = 9 * 9 /12.; |
5443e65e | 2254 | return s; |
2255 | } | |
2256 | ||
5443e65e | 2257 | //_____________________________________________________________________ |
029cd327 | 2258 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 2259 | { |
2260 | // | |
029cd327 | 2261 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 2262 | // in tracking sector <sector> and plane <plane> |
2263 | // | |
2264 | ||
029cd327 | 2265 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
5443e65e | 2266 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
2267 | return fTrSec[sector]->GetLayer(pl)->GetX(); | |
2268 | ||
2269 | } | |
2270 | ||
c630aafd | 2271 | |
5443e65e | 2272 | //_______________________________________________________ |
2273 | AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, | |
029cd327 | 2274 | Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) |
5443e65e | 2275 | { |
0a29d0f1 | 2276 | // |
5443e65e | 2277 | // AliTRDpropagationLayer constructor |
0a29d0f1 | 2278 | // |
46d29e70 | 2279 | |
029cd327 | 2280 | fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; |
2281 | fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; | |
5443e65e | 2282 | |
46d29e70 | 2283 | |
029cd327 | 2284 | for(Int_t i=0; i < (Int_t) kZones; i++) { |
5443e65e | 2285 | fZc[i]=0; fZmax[i] = 0; |
a819a5f7 | 2286 | } |
5443e65e | 2287 | |
2288 | fYmax = 0; | |
2289 | ||
2290 | if(fTimeBinIndex >= 0) { | |
029cd327 | 2291 | fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; |
2292 | fIndex = new UInt_t[kMaxClusterPerTimeBin]; | |
a819a5f7 | 2293 | } |
46d29e70 | 2294 | |
5443e65e | 2295 | fHole = kFALSE; |
2296 | fHoleZc = 0; | |
2297 | fHoleZmax = 0; | |
2298 | fHoleYc = 0; | |
2299 | fHoleYmax = 0; | |
2300 | fHoleRho = 0; | |
2301 | fHoleX0 = 0; | |
2302 | ||
2303 | } | |
2304 | ||
2305 | //_______________________________________________________ | |
2306 | void AliTRDtracker::AliTRDpropagationLayer::SetHole( | |
a9814c09 | 2307 | Double_t Zmax, Double_t Ymax, Double_t rho, |
029cd327 | 2308 | Double_t radLength, Double_t Yc, Double_t Zc) |
5443e65e | 2309 | { |
2310 | // | |
2311 | // Sets hole in the layer | |
2312 | // | |
2313 | ||
2314 | fHole = kTRUE; | |
2315 | fHoleZc = Zc; | |
2316 | fHoleZmax = Zmax; | |
2317 | fHoleYc = Yc; | |
2318 | fHoleYmax = Ymax; | |
2319 | fHoleRho = rho; | |
029cd327 | 2320 | fHoleX0 = radLength; |
5443e65e | 2321 | } |
2322 | ||
46d29e70 | 2323 | |
5443e65e | 2324 | //_______________________________________________________ |
2325 | AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) | |
2326 | { | |
2327 | // | |
2328 | // AliTRDtrackingSector Constructor | |
2329 | // | |
2330 | ||
2331 | fGeom = geo; | |
2332 | fPar = par; | |
2333 | fGeomSector = gs; | |
2334 | fTzeroShift = 0.13; | |
2335 | fN = 0; | |
2336 | ||
029cd327 | 2337 | for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; |
5443e65e | 2338 | |
2339 | ||
2340 | AliTRDpropagationLayer* ppl; | |
2341 | ||
029cd327 | 2342 | Double_t x, xin, xout, dx, rho, radLength; |
5443e65e | 2343 | Int_t steps; |
46d29e70 | 2344 | |
5443e65e | 2345 | // set time bins in the gas of the TPC |
46d29e70 | 2346 | |
5443e65e | 2347 | xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; |
029cd327 | 2348 | rho = 0.9e-3; radLength = 28.94; |
5443e65e | 2349 | |
2350 | for(Int_t i=0; i<steps; i++) { | |
2351 | x = xin + i*dx + dx/2; | |
029cd327 | 2352 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2353 | InsertLayer(ppl); |
46d29e70 | 2354 | } |
2355 | ||
5443e65e | 2356 | // set time bins in the outer field cage vessel |
46d29e70 | 2357 | |
029cd327 | 2358 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2359 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2360 | InsertLayer(ppl); |
46d29e70 | 2361 | |
029cd327 | 2362 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2363 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2364 | InsertLayer(ppl); |
2365 | ||
029cd327 | 2366 | dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 2367 | steps = 5; dx = (xout - xin)/steps; |
2368 | for(Int_t i=0; i<steps; i++) { | |
2369 | x = xin + i*dx + dx/2; | |
029cd327 | 2370 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2371 | InsertLayer(ppl); |
2372 | } | |
2373 | ||
029cd327 | 2374 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2375 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2376 | InsertLayer(ppl); |
2377 | ||
029cd327 | 2378 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2379 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2380 | InsertLayer(ppl); |
0a29d0f1 | 2381 | |
5443e65e | 2382 | |
2383 | // set time bins in CO2 | |
2384 | ||
2385 | xin = xout; xout = 275.0; | |
2386 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2387 | rho = 1.977e-3; radLength = 36.2; |
5443e65e | 2388 | |
2389 | for(Int_t i=0; i<steps; i++) { | |
2390 | x = xin + i*dx + dx/2; | |
029cd327 | 2391 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2392 | InsertLayer(ppl); |
2393 | } | |
2394 | ||
2395 | // set time bins in the outer containment vessel | |
2396 | ||
029cd327 | 2397 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2398 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2399 | InsertLayer(ppl); |
2400 | ||
029cd327 | 2401 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2402 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2403 | InsertLayer(ppl); |
2404 | ||
029cd327 | 2405 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2406 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2407 | InsertLayer(ppl); |
2408 | ||
029cd327 | 2409 | dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 2410 | steps = 10; dx = (xout - xin)/steps; |
2411 | for(Int_t i=0; i<steps; i++) { | |
2412 | x = xin + i*dx + dx/2; | |
029cd327 | 2413 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2414 | InsertLayer(ppl); |
2415 | } | |
2416 | ||
029cd327 | 2417 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2418 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2419 | InsertLayer(ppl); |
2420 | ||
029cd327 | 2421 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2422 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2423 | InsertLayer(ppl); |
2424 | ||
029cd327 | 2425 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2426 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2427 | InsertLayer(ppl); |
2428 | ||
2429 | Double_t xtrd = (Double_t) fGeom->Rmin(); | |
2430 | ||
2431 | // add layers between TPC and TRD (Air temporarily) | |
2432 | xin = xout; xout = xtrd; | |
2433 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2434 | rho = 1.2e-3; radLength = 36.66; |
5443e65e | 2435 | |
2436 | for(Int_t i=0; i<steps; i++) { | |
2437 | x = xin + i*dx + dx/2; | |
029cd327 | 2438 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2439 | InsertLayer(ppl); |
2440 | } | |
2441 | ||
2442 | ||
2443 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
2444 | ||
2445 | // add layers for each of the planes | |
2446 | ||
2447 | Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell | |
2448 | Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes | |
2449 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2450 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2451 | Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator | |
2452 | Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; | |
2453 | Double_t dxPlane = dxTEC + dxSpace; | |
2454 | ||
029cd327 | 2455 | Int_t tb, tbIndex; |
2456 | const Int_t kNchambers = AliTRDgeometry::Ncham(); | |
2457 | Double_t ymax = 0, holeYmax = 0; | |
2458 | Double_t *zc = new Double_t[kNchambers]; | |
2459 | Double_t *zmax = new Double_t[kNchambers]; | |
5443e65e | 2460 | Double_t holeZmax = 1000.; // the whole sector is missing |
2461 | ||
5443e65e | 2462 | for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
2463 | ||
2464 | // Radiator | |
2465 | xin = xtrd + plane * dxPlane; xout = xin + dxRad; | |
029cd327 | 2466 | steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2467 | for(Int_t i=0; i<steps; i++) { |
2468 | x = xin + i*dx + dx/2; | |
029cd327 | 2469 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2470 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 2471 | holeYmax = x*TMath::Tan(0.5*alpha); |
2472 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2473 | } |
2474 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2475 | holeYmax = x*TMath::Tan(0.5*alpha); |
2476 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2477 | } |
2478 | InsertLayer(ppl); | |
2479 | } | |
2480 | ||
029cd327 | 2481 | ymax = fGeom->GetChamberWidth(plane)/2; |
2482 | for(Int_t ch = 0; ch < kNchambers; ch++) { | |
2483 | zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; | |
5443e65e | 2484 | Float_t pad = fPar->GetRowPadSize(plane,ch,0); |
2485 | Float_t row0 = fPar->GetRow0(plane,ch,0); | |
2486 | Int_t nPads = fPar->GetRowMax(plane,ch,0); | |
029cd327 | 2487 | zc[ch] = (pad * nPads)/2 + row0 - pad/2; |
5443e65e | 2488 | } |
2489 | ||
2490 | dx = fPar->GetTimeBinSize(); | |
029cd327 | 2491 | rho = 0.00295 * 0.85; radLength = 11.0; |
5443e65e | 2492 | |
2493 | Double_t x0 = (Double_t) fPar->GetTime0(plane); | |
2494 | Double_t xbottom = x0 - dxDrift; | |
2495 | Double_t xtop = x0 + dxAmp; | |
2496 | ||
2497 | // Amplification region | |
2498 | ||
2499 | steps = (Int_t) (dxAmp/dx); | |
2500 | ||
2501 | for(tb = 0; tb < steps; tb++) { | |
2502 | x = x0 + tb * dx + dx/2; | |
029cd327 | 2503 | tbIndex = CookTimeBinIndex(plane, -tb-1); |
2504 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); | |
2505 | ppl->SetYmax(ymax); | |
2506 | for(Int_t ch = 0; ch < kNchambers; ch++) { | |
2507 | ppl->SetZmax(ch, zc[ch], zmax[ch]); | |
5443e65e | 2508 | } |
2509 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
a9814c09 | 2510 | holeYmax = x*TMath::Tan(0.5*alpha); |
2511 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2512 | } |
2513 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2514 | holeYmax = x*TMath::Tan(0.5*alpha); |
2515 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2516 | } |
2517 | InsertLayer(ppl); | |
2518 | } | |
029cd327 | 2519 | tbIndex = CookTimeBinIndex(plane, -steps); |
5443e65e | 2520 | x = (x + dx/2 + xtop)/2; |
2521 | dx = 2*(xtop-x); | |
029cd327 | 2522 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
2523 | ppl->SetYmax(ymax); | |
2524 | for(Int_t ch = 0; ch < kNchambers; ch++) { | |
2525 | ppl->SetZmax(ch, zc[ch], zmax[ch]); | |
5443e65e | 2526 | } |
2527 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
2528 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2529 | ppl->SetHole(holeYmax, holeZmax); | |
2530 | } | |
2531 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2532 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2533 | ppl->SetHole(holeYmax, holeZmax); | |
2534 | } | |
2535 | InsertLayer(ppl); | |
2536 | ||
2537 | // Drift region | |
2538 | dx = fPar->GetTimeBinSize(); | |
2539 | steps = (Int_t) (dxDrift/dx); | |
2540 | ||
2541 | for(tb = 0; tb < steps; tb++) { | |
2542 | x = x0 - tb * dx - dx/2; | |
029cd327 | 2543 | tbIndex = CookTimeBinIndex(plane, tb); |
5443e65e | 2544 | |
029cd327 | 2545 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
2546 | ppl->SetYmax(ymax); | |
2547 | for(Int_t ch = 0; ch < kNchambers; ch++) { | |
2548 | ppl->SetZmax(ch, zc[ch], zmax[ch]); | |
5443e65e | 2549 | } |
2550 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
a9814c09 | 2551 | holeYmax = x*TMath::Tan(0.5*alpha); |
2552 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2553 | } |
2554 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2555 | holeYmax = x*TMath::Tan(0.5*alpha); |
2556 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2557 | } |
2558 | InsertLayer(ppl); | |
2559 | } | |
029cd327 | 2560 | tbIndex = CookTimeBinIndex(plane, steps); |
5443e65e | 2561 | x = (x - dx/2 + xbottom)/2; |
2562 | dx = 2*(x-xbottom); | |
029cd327 | 2563 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
2564 | ppl->SetYmax(ymax); | |
2565 | for(Int_t ch = 0; ch < kNchambers; ch++) { | |
2566 | ppl->SetZmax(ch, zc[ch], zmax[ch]); | |
5443e65e | 2567 | } |
2568 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
2569 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2570 | ppl->SetHole(holeYmax, holeZmax); | |
2571 | } | |
2572 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2573 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2574 | ppl->SetHole(holeYmax, holeZmax); | |
2575 | } | |
2576 | InsertLayer(ppl); | |
2577 | ||
2578 | // Pad Plane | |
029cd327 | 2579 | xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; |
2580 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2581 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
2582 | holeYmax = (xin+dx/2)*TMath::Tan(0.5*alpha); | |
2583 | ppl->SetHole(holeYmax, holeZmax); | |
2584 | } | |
2585 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2586 | holeYmax = (xin+dx/2)*TMath::Tan(0.5*alpha); | |
2587 | ppl->SetHole(holeYmax, holeZmax); | |
2588 | } | |
2589 | InsertLayer(ppl); | |
2590 | ||
2591 | // Rohacell | |
2592 | xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; | |
029cd327 | 2593 | steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2594 | for(Int_t i=0; i<steps; i++) { |
2595 | x = xin + i*dx + dx/2; | |
029cd327 | 2596 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2597 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 2598 | holeYmax = x*TMath::Tan(0.5*alpha); |
2599 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2600 | } |
2601 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2602 | holeYmax = x*TMath::Tan(0.5*alpha); |
2603 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2604 | } |
2605 | InsertLayer(ppl); | |
2606 | } | |
2607 | ||
2608 | // Space between the chambers, air | |
2609 | xin = xout; xout = xtrd + (plane + 1) * dxPlane; | |
029cd327 | 2610 | steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2611 | for(Int_t i=0; i<steps; i++) { |
2612 | x = xin + i*dx + dx/2; | |
029cd327 | 2613 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2614 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 2615 | holeYmax = x*TMath::Tan(0.5*alpha); |
2616 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2617 | } |
2618 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2619 | holeYmax = x*TMath::Tan(0.5*alpha); |
2620 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2621 | } |
2622 | InsertLayer(ppl); | |
2623 | } | |
2624 | } | |
2625 | ||
2626 | // Space between the TRD and RICH | |
2627 | Double_t xRICH = 500.; | |
2628 | xin = xout; xout = xRICH; | |
029cd327 | 2629 | steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2630 | for(Int_t i=0; i<steps; i++) { |
2631 | x = xin + i*dx + dx/2; | |
029cd327 | 2632 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2633 | InsertLayer(ppl); |
2634 | } | |
2635 | ||
2636 | MapTimeBinLayers(); | |
029cd327 | 2637 | delete [] zc; |
2638 | delete [] zmax; | |
5443e65e | 2639 | |
2640 | } | |
2641 | ||
2642 | //______________________________________________________ | |
2643 | ||
029cd327 | 2644 | Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t localTB) const |
5443e65e | 2645 | { |
2646 | // | |
2647 | // depending on the digitization parameters calculates "global" | |
029cd327 | 2648 | // time bin index for timebin <localTB> in plane <plane> |
5443e65e | 2649 | // |
2650 | ||
2651 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2652 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2653 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); | |
2654 | ||
2655 | Int_t tbAmp = fPar->GetTimeBefore(); | |
2656 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 2657 | if(kTRUE) maxAmp = 0; // intentional until we change parameter class |
5443e65e | 2658 | Int_t tbDrift = fPar->GetTimeMax(); |
2659 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
2660 | ||
029cd327 | 2661 | Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); |
5443e65e | 2662 | |
029cd327 | 2663 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); |
5443e65e | 2664 | |
029cd327 | 2665 | if((localTB < 0) && |
2666 | (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; | |
2667 | if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; | |
5443e65e | 2668 | |
2669 | return gtb; | |
2670 | ||
2671 | ||
2672 | } | |
2673 | ||
2674 | //______________________________________________________ | |
2675 | ||
2676 | void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() | |
2677 | { | |
2678 | // | |
2679 | // For all sensitive time bins sets corresponding layer index | |
2680 | // in the array fTimeBins | |
2681 | // | |
2682 | ||
2683 | Int_t index; | |
2684 | ||
2685 | for(Int_t i = 0; i < fN; i++) { | |
2686 | index = fLayers[i]->GetTimeBinIndex(); | |
2687 | ||
2688 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); | |
2689 | ||
2690 | if(index < 0) continue; | |
029cd327 | 2691 | if(index >= (Int_t) kMaxTimeBinIndex) { |
5443e65e | 2692 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); |
2693 | printf(" index %d exceeds allowed maximum of %d!\n", | |
029cd327 | 2694 | index, kMaxTimeBinIndex-1); |
5443e65e | 2695 | continue; |
2696 | } | |
2697 | fTimeBinIndex[index] = i; | |
2698 | } | |
2699 | ||
2700 | Double_t x1, dx1, x2, dx2, gap; | |
2701 | ||
2702 | for(Int_t i = 0; i < fN-1; i++) { | |
2703 | x1 = fLayers[i]->GetX(); | |
2704 | dx1 = fLayers[i]->GetdX(); | |
2705 | x2 = fLayers[i+1]->GetX(); | |
2706 | dx2 = fLayers[i+1]->GetdX(); | |
2707 | gap = (x2 - dx2/2) - (x1 + dx1/2); | |
2708 | if(gap < -0.01) { | |
2709 | printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); | |
2710 | printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); | |
2711 | } | |
2712 | if(gap > 0.01) { | |
2713 | printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); | |
2714 | printf(" (%f - %f) - (%f + %f) = %f\n", | |
a9814c09 | 2715 | x2, dx2/2, x1, dx1, gap); |
5443e65e | 2716 | } |
2717 | } | |
2718 | } | |
2719 | ||
2720 | ||
2721 | //______________________________________________________ | |
2722 | ||
2723 | ||
2724 | Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const | |
2725 | { | |
2726 | // | |
2727 | // Returns the number of time bin which in radial position is closest to <x> | |
2728 | // | |
2729 | ||
2730 | if(x >= fLayers[fN-1]->GetX()) return fN-1; | |
2731 | if(x <= fLayers[0]->GetX()) return 0; | |
2732 | ||
2733 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2734 | for (; b<e; m=(b+e)/2) { | |
2735 | if (x > fLayers[m]->GetX()) b=m+1; | |
2736 | else e=m; | |
2737 | } | |
2738 | if(TMath::Abs(x - fLayers[m]->GetX()) > | |
2739 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; | |
2740 | else return m; | |
2741 | ||
2742 | } | |
2743 | ||
2744 | //______________________________________________________ | |
2745 | ||
2746 | Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const | |
2747 | { | |
2748 | // | |
2749 | // Returns number of the innermost SENSITIVE propagation layer | |
2750 | // | |
2751 | ||
2752 | return GetLayerNumber(0); | |
2753 | } | |
2754 | ||
2755 | //______________________________________________________ | |
2756 | ||
2757 | Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const | |
2758 | { | |
2759 | // | |
2760 | // Returns number of the outermost SENSITIVE time bin | |
2761 | // | |
2762 | ||
2763 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2764 | } |
2765 | ||
5443e65e | 2766 | //______________________________________________________ |
2767 | ||
2768 | Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const | |
2769 | { | |
2770 | // | |
2771 | // Returns number of SENSITIVE time bins | |
2772 | // | |
2773 | ||
2774 | Int_t tb, layer; | |
029cd327 | 2775 | for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { |
5443e65e | 2776 | layer = GetLayerNumber(tb); |
2777 | if(layer>=0) break; | |
2778 | } | |
2779 | return tb+1; | |
2780 | } | |
2781 | ||
2782 | //______________________________________________________ | |
2783 | ||
2784 | void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) | |
2785 | { | |
2786 | // | |
2787 | // Insert layer <pl> in fLayers array. | |
2788 | // Layers are sorted according to X coordinate. | |
2789 | ||
029cd327 | 2790 | if ( fN == ((Int_t) kMaxLayersPerSector)) { |
5443e65e | 2791 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); |
2792 | return; | |
2793 | } | |
2794 | if (fN==0) {fLayers[fN++] = pl; return;} | |
2795 | Int_t i=Find(pl->GetX()); | |
2796 | ||
2797 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
2798 | fLayers[i]=pl; fN++; | |
2799 | ||
2800 | } | |
2801 | ||
2802 | //______________________________________________________ | |
2803 | ||
2804 | Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const | |
2805 | { | |
2806 | // | |
2807 | // Returns index of the propagation layer nearest to X | |
2808 | // | |
2809 | ||
2810 | if (x <= fLayers[0]->GetX()) return 0; | |
2811 | if (x > fLayers[fN-1]->GetX()) return fN; | |
2812 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2813 | for (; b<e; m=(b+e)/2) { | |
2814 | if (x > fLayers[m]->GetX()) b=m+1; | |
2815 | else e=m; | |
2816 | } | |
2817 | return m; | |
2818 | } | |
2819 | ||
2820 | //______________________________________________________ | |
2821 | ||
2822 | void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( | |
029cd327 | 2823 | Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, |
a9814c09 | 2824 | Bool_t &lookForCluster) const |
5443e65e | 2825 | { |
2826 | // | |
029cd327 | 2827 | // Returns radial step <dx>, density <rho>, rad. length <radLength>, |
5443e65e | 2828 | // and sensitivity <lookForCluster> in point <y,z> |
2829 | // | |
2830 | ||
2831 | dx = fdX; | |
2832 | rho = fRho; | |
029cd327 | 2833 | radLength = fX0; |
5443e65e | 2834 | lookForCluster = kFALSE; |
2835 | ||
2836 | // check dead regions | |
2837 | if(fTimeBinIndex >= 0) { | |
029cd327 | 2838 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { |
5443e65e | 2839 | if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) |
a9814c09 | 2840 | lookForCluster = kTRUE; |
029cd327 | 2841 | // else { rho = 1.7; radLength = 33.0; } // G10 |
5443e65e | 2842 | } |
2843 | if(TMath::Abs(y) > fYmax) lookForCluster = kFALSE; | |
2844 | if(!lookForCluster) { | |
029cd327 | 2845 | // rho = 1.7; radLength = 33.0; // G10 |
5443e65e | 2846 | } |
2847 | } | |
2848 | ||
2849 | // check hole | |
2850 | if(fHole && (TMath::Abs(y - fHoleYc) < fHoleYmax) && | |
2851 | (TMath::Abs(z - fHoleZc) < fHoleZmax)) { | |
2852 | lookForCluster = kFALSE; | |
2853 | rho = fHoleRho; | |
029cd327 | 2854 | radLength = fHoleX0; |
5443e65e | 2855 | } |
2856 | ||
2857 | return; | |
2858 | } | |
2859 | ||
2860 | //______________________________________________________ | |
2861 | ||
2862 | void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, | |
a9814c09 | 2863 | UInt_t index) { |
5443e65e | 2864 | |
2865 | // Insert cluster in cluster array. | |
2866 | // Clusters are sorted according to Y coordinate. | |
2867 | ||
2868 | if(fTimeBinIndex < 0) { | |
2869 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); | |
2870 | return; | |
2871 | } | |
2872 | ||
029cd327 | 2873 | if (fN== (Int_t) kMaxClusterPerTimeBin) { |
5443e65e | 2874 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); |
2875 | return; | |
2876 | } | |
2877 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} | |
2878 | Int_t i=Find(c->GetY()); | |
2879 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); | |
2880 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); | |
2881 | fIndex[i]=index; fClusters[i]=c; fN++; | |
2882 | } | |
2883 | ||
2884 | //______________________________________________________ | |
2885 | ||
2886 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { | |
2887 | ||
2888 | // Returns index of the cluster nearest in Y | |
2889 | ||
2890 | if (y <= fClusters[0]->GetY()) return 0; | |
2891 | if (y > fClusters[fN-1]->GetY()) return fN; | |
2892 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2893 | for (; b<e; m=(b+e)/2) { | |
2894 | if (y > fClusters[m]->GetY()) b=m+1; | |
2895 | else e=m; | |
2896 | } | |
2897 | return m; | |
2898 | } | |
2899 | ||
fd621f36 | 2900 | //--------------------------------------------------------- |
5443e65e | 2901 | |
fd621f36 | 2902 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { |
2903 | // | |
2904 | // Returns correction factor for tilted pads geometry | |
2905 | // | |
5443e65e | 2906 | |
fd621f36 | 2907 | Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); |
2908 | Int_t det = c->GetDetector(); | |
2909 | Int_t plane = fGeom->GetPlane(det); | |
b3a5a838 | 2910 | |
2911 | if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; | |
b8dc2353 | 2912 | |
2913 | if(fNoTilt) h01 = 0; | |
fd621f36 | 2914 | |
2915 | return h01; | |
2916 | } | |
5443e65e | 2917 | |
c630aafd | 2918 | |
2919 | ||
2920 | ||
2921 | ||
2922 |