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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 | ||
88cb7938 | 16 | /* $Id$ */ |
bbf92647 | 17 | |
a2cb5b3d | 18 | #include <Riostream.h> |
46d29e70 | 19 | |
20 | #include <TFile.h> | |
46d29e70 | 21 | #include <TBranch.h> |
5443e65e | 22 | #include <TTree.h> |
88cb7938 | 23 | #include <TObjArray.h> |
24 | #include <TError.h> | |
46d29e70 | 25 | |
46d29e70 | 26 | #include "AliTRDgeometry.h" |
5443e65e | 27 | #include "AliTRDparameter.h" |
28 | #include "AliTRDgeometryDetail.h" | |
46d29e70 | 29 | #include "AliTRDcluster.h" |
30 | #include "AliTRDtrack.h" | |
5443e65e | 31 | #include "../TPC/AliTPCtrack.h" |
46d29e70 | 32 | |
33 | #include "AliTRDtracker.h" | |
34 | ||
35 | ClassImp(AliTRDtracker) | |
36 | ||
88cb7938 | 37 | const Float_t AliTRDtracker::fgkSeedDepth = 0.5; |
38 | const Float_t AliTRDtracker::fgkSeedStep = 0.10; | |
39 | const Float_t AliTRDtracker::fgkSeedGap = 0.25; | |
5443e65e | 40 | |
88cb7938 | 41 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; |
42 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; | |
43 | const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; | |
44 | const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; | |
45 | const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; | |
a819a5f7 | 46 | |
88cb7938 | 47 | const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; |
48 | const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; | |
49 | const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; | |
bbf92647 | 50 | |
88cb7938 | 51 | const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; |
bbf92647 | 52 | |
88cb7938 | 53 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
54 | const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; | |
55 | ||
56 | const Float_t AliTRDtracker::fgkSkipDepth = 0.3; | |
57 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; | |
58 | const Float_t AliTRDtracker::fgkWideRoad = 20.; | |
bbf92647 | 59 | |
88cb7938 | 60 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
5443e65e | 61 | |
88cb7938 | 62 | const Int_t AliTRDtracker::kFirstPlane = 5; |
63 | const Int_t AliTRDtracker::kLastPlane = 17; | |
64 | //____________________________________________________________________ | |
65 | Int_t AliTRDtracker::PropagateBack() | |
66 | { | |
67 | //Overrides pure virtual methods in AliTracker | |
68 | //Left for responsible to make it compatible with NewIO | |
a819a5f7 | 69 | |
88cb7938 | 70 | Error("PropagateBack","Not yet NewIO-ed"); |
71 | return 0; | |
72 | } | |
73 | //____________________________________________________________________ | |
9c9d2487 | 74 | |
88cb7938 | 75 | Int_t AliTRDtracker::Clusters2Tracks() |
76 | { | |
77 | //Overrides pure virtual methods in AliTracker | |
78 | //Left for responsible to make it compatible with NewIO | |
bbf92647 | 79 | |
88cb7938 | 80 | Error("PropagateBack","Not yet NewIO-ed"); |
81 | return 0; | |
82 | } | |
46d29e70 | 83 | //____________________________________________________________________ |
88cb7938 | 84 | |
85 | AliTRDtracker::AliTRDtracker(const TFile *geomfile) | |
46d29e70 | 86 | { |
5443e65e | 87 | // |
88 | // Main constructor | |
89 | // | |
46d29e70 | 90 | |
5443e65e | 91 | Float_t fTzero = 0; |
b8dc2353 | 92 | |
5443e65e | 93 | fAddTRDseeds = kFALSE; |
5443e65e | 94 | fGeom = NULL; |
b8dc2353 | 95 | fNoTilt = kFALSE; |
5443e65e | 96 | |
97 | TDirectory *savedir=gDirectory; | |
98 | TFile *in=(TFile*)geomfile; | |
99 | if (!in->IsOpen()) { | |
100 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); | |
101 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
102 | } | |
103 | else { | |
104 | in->cd(); | |
88cb7938 | 105 | in->ls(); |
5443e65e | 106 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
107 | fPar = (AliTRDparameter*) in->Get("TRDparameter"); | |
88cb7938 | 108 | fGeom->Dump(); |
5443e65e | 109 | } |
46d29e70 | 110 | |
5443e65e | 111 | if(fGeom) { |
112 | // fTzero = geo->GetT0(); | |
b8dc2353 | 113 | printf("Found geometry version %d on file \n", fGeom->IsVersion()); |
5443e65e | 114 | } |
115 | else { | |
116 | printf("AliTRDtracker::AliTRDtracker(): cann't find TRD geometry!\n"); | |
117 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
118 | fGeom = new AliTRDgeometryDetail(); | |
119 | fPar = new AliTRDparameter(); | |
120 | } | |
121 | ||
122 | savedir->cd(); | |
46d29e70 | 123 | |
5443e65e | 124 | |
125 | // fGeom->SetT0(fTzero); | |
0a29d0f1 | 126 | |
88cb7938 | 127 | // fEvent = 0; |
128 | AliTracker::SetEventNumber(0); | |
129 | ||
46d29e70 | 130 | fNclusters = 0; |
131 | fClusters = new TObjArray(2000); | |
132 | fNseeds = 0; | |
5443e65e | 133 | fSeeds = new TObjArray(2000); |
46d29e70 | 134 | fNtracks = 0; |
5443e65e | 135 | fTracks = new TObjArray(1000); |
a819a5f7 | 136 | |
5443e65e | 137 | for(Int_t geom_s = 0; geom_s < kTRACKING_SECTORS; geom_s++) { |
138 | Int_t tr_s = CookSectorIndex(geom_s); | |
139 | fTrSec[tr_s] = new AliTRDtrackingSector(fGeom, geom_s, fPar); | |
140 | } | |
a819a5f7 | 141 | |
b8dc2353 | 142 | Float_t tilt_angle = TMath::Abs(fPar->GetTiltingAngle()); |
143 | if(tilt_angle < 0.1) { | |
144 | fNoTilt = kTRUE; | |
145 | } | |
146 | ||
147 | fSY2corr = 0.2; | |
148 | fSZ2corr = 120.; | |
149 | ||
150 | if(fNoTilt && (tilt_angle > 0.1)) fSY2corr = fSY2corr + tilt_angle * 0.05; | |
151 | ||
bbf92647 | 152 | |
5443e65e | 153 | // calculate max gap on track |
a819a5f7 | 154 | |
5443e65e | 155 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
156 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
a819a5f7 | 157 | |
5443e65e | 158 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); |
159 | Int_t tbAmp = fPar->GetTimeBefore(); | |
160 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 161 | if(kTRUE) maxAmp = 0; // intentional until we change the parameter class |
5443e65e | 162 | Int_t tbDrift = fPar->GetTimeMax(); |
163 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
a819a5f7 | 164 | |
5443e65e | 165 | tbDrift = TMath::Min(tbDrift,maxDrift); |
166 | tbAmp = TMath::Min(tbAmp,maxAmp); | |
46d29e70 | 167 | |
5443e65e | 168 | fTimeBinsPerPlane = tbAmp + tbDrift; |
88cb7938 | 169 | fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); |
46d29e70 | 170 | |
5443e65e | 171 | fVocal = kFALSE; |
0a29d0f1 | 172 | |
9c9d2487 | 173 | |
174 | // Barrel Tracks [SR, 03.04.2003] | |
175 | ||
176 | fBarrelFile = 0; | |
177 | fBarrelTree = 0; | |
178 | fBarrelArray = 0; | |
179 | fBarrelTrack = 0; | |
180 | ||
181 | savedir->cd(); | |
5443e65e | 182 | } |
46d29e70 | 183 | |
5443e65e | 184 | //___________________________________________________________________ |
185 | AliTRDtracker::~AliTRDtracker() | |
46d29e70 | 186 | { |
5443e65e | 187 | delete fClusters; |
188 | delete fTracks; | |
189 | delete fSeeds; | |
190 | delete fGeom; | |
191 | delete fPar; | |
0a29d0f1 | 192 | |
5443e65e | 193 | for(Int_t geom_s = 0; geom_s < kTRACKING_SECTORS; geom_s++) { |
194 | delete fTrSec[geom_s]; | |
195 | } | |
196 | } | |
46d29e70 | 197 | |
9c9d2487 | 198 | //_____________________________________________________________________ |
199 | ||
200 | void AliTRDtracker::SetBarrelTree(const char *mode) { | |
201 | // | |
202 | // | |
203 | // | |
204 | ||
205 | if (!IsStoringBarrel()) return; | |
206 | ||
207 | TDirectory *sav = gDirectory; | |
208 | if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE"); | |
209 | ||
210 | char buff[40]; | |
211 | sprintf(buff, "BarrelTRD_%d_%s", GetEventNumber(), mode); | |
212 | ||
213 | fBarrelFile->cd(); | |
214 | fBarrelTree = new TTree(buff, "Barrel TPC tracks"); | |
215 | ||
216 | Int_t nRefs = kLastPlane - kFirstPlane + 1; | |
217 | ||
218 | if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", nRefs); | |
219 | for(Int_t i=0; i<nRefs; i++) new((*fBarrelArray)[i]) AliBarrelTrack(); | |
220 | ||
221 | fBarrelTree->Branch("tracks", &fBarrelArray); | |
222 | sav->cd(); | |
223 | } | |
224 | ||
225 | //_____________________________________________________________________ | |
226 | ||
227 | void AliTRDtracker::StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn) { | |
228 | // | |
229 | // | |
230 | // | |
231 | ||
232 | if (!IsStoringBarrel()) return; | |
233 | ||
234 | static Int_t nClusters; | |
235 | static Int_t nWrong; | |
236 | static Double_t chi2; | |
237 | static Int_t index; | |
238 | static Bool_t wasLast = kTRUE; | |
239 | ||
240 | Int_t newClusters, newWrong; | |
241 | Double_t newChi2; | |
242 | ||
243 | if (wasLast) { | |
244 | ||
245 | fBarrelArray->Clear(); | |
246 | nClusters = nWrong = 0; | |
247 | chi2 = 0.0; | |
248 | index = 0; | |
249 | wasLast = kFALSE; | |
250 | } | |
251 | ||
252 | fBarrelTrack = (AliBarrelTrack*)(*fBarrelArray)[index++]; | |
253 | ps->GetBarrelTrack(fBarrelTrack); | |
254 | ||
255 | newClusters = ps->GetNumberOfClusters() - nClusters; | |
256 | newWrong = ps->GetNWrong() - nWrong; | |
257 | newChi2 = ps->GetChi2() - chi2; | |
258 | ||
259 | nClusters = ps->GetNumberOfClusters(); | |
260 | nWrong = ps->GetNWrong(); | |
261 | chi2 = ps->GetChi2(); | |
262 | ||
263 | if (refPlane != kLastPlane) { | |
264 | fBarrelTrack->SetNClusters(newClusters, newChi2); | |
265 | fBarrelTrack->SetNWrongClusters(newWrong); | |
266 | } else { | |
267 | wasLast = kTRUE; | |
268 | } | |
269 | ||
270 | fBarrelTrack->SetRefPlane(refPlane, isIn); | |
271 | } | |
272 | ||
273 | //_____________________________________________________________________ | |
274 | ||
275 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { | |
276 | // | |
277 | // Rotates the track when necessary | |
278 | // | |
279 | ||
280 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
281 | Double_t y = track->GetY(); | |
282 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
283 | ||
284 | Int_t ns = AliTRDgeometry::kNsect; | |
285 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; | |
286 | ||
287 | if (y > ymax) { | |
288 | //s = (s+1) % ns; | |
289 | if (!track->Rotate(alpha)) return kFALSE; | |
290 | } else if (y <-ymax) { | |
291 | //s = (s-1+ns) % ns; | |
292 | if (!track->Rotate(-alpha)) return kFALSE; | |
293 | } | |
294 | ||
295 | return kTRUE; | |
296 | } | |
297 | ||
46d29e70 | 298 | //_____________________________________________________________________ |
5443e65e | 299 | inline Double_t f1trd(Double_t x1,Double_t y1, |
a9814c09 | 300 | Double_t x2,Double_t y2, |
301 | Double_t x3,Double_t y3) | |
46d29e70 | 302 | { |
0a29d0f1 | 303 | // |
46d29e70 | 304 | // Initial approximation of the track curvature |
0a29d0f1 | 305 | // |
46d29e70 | 306 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
307 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
308 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
309 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
310 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
311 | ||
312 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
313 | ||
314 | return -xr*yr/sqrt(xr*xr+yr*yr); | |
88cb7938 | 315 | |
46d29e70 | 316 | } |
317 | ||
318 | //_____________________________________________________________________ | |
5443e65e | 319 | inline Double_t f2trd(Double_t x1,Double_t y1, |
a9814c09 | 320 | Double_t x2,Double_t y2, |
321 | Double_t x3,Double_t y3) | |
46d29e70 | 322 | { |
0a29d0f1 | 323 | // |
5443e65e | 324 | // Initial approximation of the track curvature times X coordinate |
325 | // of the center of curvature | |
0a29d0f1 | 326 | // |
46d29e70 | 327 | |
328 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); | |
329 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
330 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
331 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
332 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
333 | ||
334 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
335 | ||
336 | return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); | |
88cb7938 | 337 | |
46d29e70 | 338 | } |
339 | ||
340 | //_____________________________________________________________________ | |
5443e65e | 341 | inline Double_t f3trd(Double_t x1,Double_t y1, |
a9814c09 | 342 | Double_t x2,Double_t y2, |
343 | Double_t z1,Double_t z2) | |
46d29e70 | 344 | { |
0a29d0f1 | 345 | // |
46d29e70 | 346 | // Initial approximation of the tangent of the track dip angle |
0a29d0f1 | 347 | // |
46d29e70 | 348 | |
349 | return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
88cb7938 | 350 | |
46d29e70 | 351 | } |
352 | ||
46d29e70 | 353 | //___________________________________________________________________ |
5443e65e | 354 | Int_t AliTRDtracker::Clusters2Tracks(const TFile *inp, TFile *out) |
46d29e70 | 355 | { |
0a29d0f1 | 356 | // |
5443e65e | 357 | // Finds tracks within the TRD. File <inp> is expected to contain seeds |
358 | // at the outer part of the TRD. If <inp> is NULL, the seeds | |
359 | // are found within the TRD if fAddTRDseeds is TRUE. | |
360 | // The tracks are propagated to the innermost time bin | |
361 | // of the TRD and stored in file <out>. | |
0a29d0f1 | 362 | // |
a819a5f7 | 363 | |
5443e65e | 364 | LoadEvent(); |
365 | ||
366 | TDirectory *savedir=gDirectory; | |
a819a5f7 | 367 | |
5443e65e | 368 | char tname[100]; |
a819a5f7 | 369 | |
5443e65e | 370 | if (!out->IsOpen()) { |
371 | cerr<<"AliTRDtracker::Clusters2Tracks(): output file is not open !\n"; | |
372 | return 1; | |
373 | } | |
46d29e70 | 374 | |
e24ea474 | 375 | sprintf(tname,"seedTRDtoTPC_%d",GetEventNumber()); |
5443e65e | 376 | TTree tpc_tree(tname,"Tree with seeds from TRD at outer TPC pad row"); |
377 | AliTPCtrack *iotrack=0; | |
378 | tpc_tree.Branch("tracks","AliTPCtrack",&iotrack,32000,0); | |
379 | ||
e24ea474 | 380 | sprintf(tname,"TreeT%d_TRD",GetEventNumber()); |
5443e65e | 381 | TTree trd_tree(tname,"TRD tracks at inner TRD time bin"); |
382 | AliTRDtrack *iotrack_trd=0; | |
383 | trd_tree.Branch("tracks","AliTRDtrack",&iotrack_trd,32000,0); | |
384 | ||
385 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
88cb7938 | 386 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
5443e65e | 387 | |
388 | if (inp) { | |
389 | TFile *in=(TFile*)inp; | |
390 | if (!in->IsOpen()) { | |
391 | cerr<<"AliTRDtracker::Clusters2Tracks(): file with seeds is not open !\n"; | |
392 | cerr<<" ... going for seeds finding inside the TRD\n"; | |
393 | } | |
394 | else { | |
395 | in->cd(); | |
e24ea474 | 396 | sprintf(tname,"TRDb_%d",GetEventNumber()); |
5443e65e | 397 | TTree *seedTree=(TTree*)in->Get(tname); |
398 | if (!seedTree) { | |
a9814c09 | 399 | cerr<<"AliTRDtracker::Clusters2Tracks(): "; |
400 | cerr<<"can't get a tree with track seeds !\n"; | |
401 | return 3; | |
5443e65e | 402 | } |
403 | AliTRDtrack *seed=new AliTRDtrack; | |
404 | seedTree->SetBranchAddress("tracks",&seed); | |
405 | ||
406 | Int_t n=(Int_t)seedTree->GetEntries(); | |
407 | for (Int_t i=0; i<n; i++) { | |
a9814c09 | 408 | seedTree->GetEvent(i); |
409 | seed->ResetCovariance(); | |
410 | AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha()); | |
411 | fSeeds->AddLast(tr); | |
412 | fNseeds++; | |
5443e65e | 413 | } |
414 | delete seed; | |
fd621f36 | 415 | delete seedTree; |
5443e65e | 416 | } |
417 | } | |
46d29e70 | 418 | |
5443e65e | 419 | out->cd(); |
46d29e70 | 420 | |
fd621f36 | 421 | |
5443e65e | 422 | // find tracks from loaded seeds |
a819a5f7 | 423 | |
5443e65e | 424 | Int_t nseed=fSeeds->GetEntriesFast(); |
425 | Int_t i, found = 0; | |
426 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
427 | ||
428 | for (i=0; i<nseed; i++) { | |
429 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
430 | FollowProlongation(t, innerTB); | |
431 | if (t.GetNumberOfClusters() >= foundMin) { | |
432 | UseClusters(&t); | |
88cb7938 | 433 | CookLabel(pt, 1-fgkLabelFraction); |
5443e65e | 434 | // t.CookdEdx(); |
435 | } | |
436 | iotrack_trd = pt; | |
437 | trd_tree.Fill(); | |
e24ea474 | 438 | found++; |
439 | // cout<<found<<'\r'; | |
5443e65e | 440 | |
441 | if(PropagateToTPC(t)) { | |
442 | AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha()); | |
443 | iotrack = tpc; | |
444 | tpc_tree.Fill(); | |
445 | delete tpc; | |
446 | } | |
447 | delete fSeeds->RemoveAt(i); | |
448 | fNseeds--; | |
449 | } | |
a819a5f7 | 450 | |
5443e65e | 451 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
452 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
a819a5f7 | 453 | |
5443e65e | 454 | // after tracks from loaded seeds are found and the corresponding |
455 | // clusters are used, look for additional seeds from TRD | |
46d29e70 | 456 | |
5443e65e | 457 | if(fAddTRDseeds) { |
458 | // Find tracks for the seeds in the TRD | |
459 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
460 | ||
88cb7938 | 461 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
462 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); | |
463 | Int_t step = (Int_t) (timeBins * fgkSeedStep); | |
5443e65e | 464 | |
465 | // make a first turn with tight cut on initial curvature | |
466 | for(Int_t turn = 1; turn <= 2; turn++) { | |
467 | if(turn == 2) { | |
88cb7938 | 468 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
469 | step = (Int_t) (timeBins * (3*fgkSeedStep)); | |
5443e65e | 470 | } |
471 | for(Int_t i=0; i<nSteps; i++) { | |
a9814c09 | 472 | Int_t outer=timeBins-1-i*step; |
473 | Int_t inner=outer-gap; | |
46d29e70 | 474 | |
a9814c09 | 475 | nseed=fSeeds->GetEntriesFast(); |
5443e65e | 476 | |
a9814c09 | 477 | MakeSeeds(inner, outer, turn); |
5443e65e | 478 | |
a9814c09 | 479 | nseed=fSeeds->GetEntriesFast(); |
480 | printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", | |
481 | turn, i, nseed); | |
482 | ||
483 | for (Int_t i=0; i<nseed; i++) { | |
484 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
485 | FollowProlongation(t,innerTB); | |
486 | if (t.GetNumberOfClusters() >= foundMin) { | |
487 | UseClusters(&t); | |
88cb7938 | 488 | CookLabel(pt, 1-fgkLabelFraction); |
a9814c09 | 489 | t.CookdEdx(); |
e24ea474 | 490 | found++; |
491 | // cout<<found<<'\r'; | |
a9814c09 | 492 | iotrack_trd = pt; |
493 | trd_tree.Fill(); | |
494 | if(PropagateToTPC(t)) { | |
495 | AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha()); | |
496 | iotrack = tpc; | |
497 | tpc_tree.Fill(); | |
498 | delete tpc; | |
499 | } | |
500 | } | |
501 | delete fSeeds->RemoveAt(i); | |
502 | fNseeds--; | |
503 | } | |
46d29e70 | 504 | } |
5443e65e | 505 | } |
506 | } | |
507 | tpc_tree.Write(); | |
508 | trd_tree.Write(); | |
509 | ||
510 | cout<<"Total number of found tracks: "<<found<<endl; | |
511 | ||
512 | UnloadEvent(); | |
513 | ||
514 | savedir->cd(); | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
5443e65e | 519 | |
520 | //_____________________________________________________________________________ | |
521 | Int_t AliTRDtracker::PropagateBack(const TFile *inp, TFile *out) { | |
522 | // | |
523 | // Reads seeds from file <inp>. The seeds are AliTPCtrack's found and | |
524 | // backpropagated by the TPC tracker. Each seed is first propagated | |
525 | // to the TRD, and then its prolongation is searched in the TRD. | |
526 | // If sufficiently long continuation of the track is found in the TRD | |
527 | // the track is updated, otherwise it's stored as originaly defined | |
528 | // by the TPC tracker. | |
529 | // | |
530 | ||
5443e65e | 531 | LoadEvent(); |
532 | ||
533 | TDirectory *savedir=gDirectory; | |
534 | ||
535 | TFile *in=(TFile*)inp; | |
536 | ||
537 | if (!in->IsOpen()) { | |
538 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
539 | cerr<<"file with back propagated TPC tracks is not open !\n"; | |
540 | return 1; | |
541 | } | |
542 | ||
543 | if (!out->IsOpen()) { | |
544 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
545 | cerr<<"file for back propagated TRD tracks is not open !\n"; | |
546 | return 2; | |
547 | } | |
548 | ||
549 | in->cd(); | |
550 | char tname[100]; | |
e24ea474 | 551 | sprintf(tname,"seedsTPCtoTRD_%d",GetEventNumber()); |
5443e65e | 552 | TTree *seedTree=(TTree*)in->Get(tname); |
553 | if (!seedTree) { | |
554 | cerr<<"AliTRDtracker::PropagateBack(): "; | |
555 | cerr<<"can't get a tree with seeds from TPC !\n"; | |
556 | cerr<<"check if your version of TPC tracker creates tree "<<tname<<"\n"; | |
557 | return 3; | |
558 | } | |
46d29e70 | 559 | |
5443e65e | 560 | AliTPCtrack *seed=new AliTPCtrack; |
561 | seedTree->SetBranchAddress("tracks",&seed); | |
562 | ||
563 | Int_t n=(Int_t)seedTree->GetEntries(); | |
564 | for (Int_t i=0; i<n; i++) { | |
565 | seedTree->GetEvent(i); | |
566 | Int_t lbl = seed->GetLabel(); | |
567 | AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha()); | |
568 | tr->SetSeedLabel(lbl); | |
569 | fSeeds->AddLast(tr); | |
570 | fNseeds++; | |
571 | } | |
a819a5f7 | 572 | |
5443e65e | 573 | delete seed; |
574 | delete seedTree; | |
a819a5f7 | 575 | |
5443e65e | 576 | out->cd(); |
a819a5f7 | 577 | |
5443e65e | 578 | AliTPCtrack *otrack=0; |
a819a5f7 | 579 | |
e24ea474 | 580 | sprintf(tname,"seedsTRDtoTOF1_%d",GetEventNumber()); |
5443e65e | 581 | TTree tofTree1(tname,"Tracks back propagated through TPC and TRD"); |
582 | tofTree1.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 583 | |
e24ea474 | 584 | sprintf(tname,"seedsTRDtoTOF2_%d",GetEventNumber()); |
5443e65e | 585 | TTree tofTree2(tname,"Tracks back propagated through TPC and TRD"); |
586 | tofTree2.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
46d29e70 | 587 | |
e24ea474 | 588 | sprintf(tname,"seedsTRDtoPHOS_%d",GetEventNumber()); |
5443e65e | 589 | TTree phosTree(tname,"Tracks back propagated through TPC and TRD"); |
590 | phosTree.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 591 | |
e24ea474 | 592 | sprintf(tname,"seedsTRDtoRICH_%d",GetEventNumber()); |
5443e65e | 593 | TTree richTree(tname,"Tracks back propagated through TPC and TRD"); |
594 | richTree.Branch("tracks","AliTPCtrack",&otrack,32000,0); | |
a819a5f7 | 595 | |
e24ea474 | 596 | sprintf(tname,"TRDb_%d",GetEventNumber()); |
5443e65e | 597 | TTree trdTree(tname,"Back propagated TRD tracks at outer TRD time bin"); |
598 | AliTRDtrack *otrack_trd=0; | |
599 | trdTree.Branch("tracks","AliTRDtrack",&otrack_trd,32000,0); | |
600 | ||
9c9d2487 | 601 | if (IsStoringBarrel()) SetBarrelTree("back"); |
602 | out->cd(); | |
46d29e70 | 603 | |
9c9d2487 | 604 | Int_t found=0; |
5443e65e | 605 | Int_t nseed=fSeeds->GetEntriesFast(); |
46d29e70 | 606 | |
88cb7938 | 607 | // Float_t foundMin = fgkMinClustersInTrack * fTimeBinsPerPlane * fGeom->Nplan(); |
9c9d2487 | 608 | Float_t foundMin = 40; |
a819a5f7 | 609 | |
5443e65e | 610 | Int_t outermost_tb = fTrSec[0]->GetOuterTimeBin(); |
a819a5f7 | 611 | |
5443e65e | 612 | for (Int_t i=0; i<nseed; i++) { |
a819a5f7 | 613 | |
5443e65e | 614 | AliTRDtrack *ps=(AliTRDtrack*)fSeeds->UncheckedAt(i), &s=*ps; |
615 | Int_t expectedClr = FollowBackProlongation(s); | |
9c9d2487 | 616 | |
617 | if (IsStoringBarrel()) { | |
618 | StoreBarrelTrack(ps, kLastPlane, kTrackBack); | |
619 | fBarrelTree->Fill(); | |
620 | } | |
621 | ||
5443e65e | 622 | Int_t foundClr = s.GetNumberOfClusters(); |
623 | Int_t last_tb = fTrSec[0]->GetLayerNumber(s.GetX()); | |
a819a5f7 | 624 | |
fd621f36 | 625 | // printf("seed %d: found %d out of %d expected clusters, Min is %f\n", |
a9814c09 | 626 | // i, foundClr, expectedClr, foundMin); |
a819a5f7 | 627 | |
5443e65e | 628 | if (foundClr >= foundMin) { |
a9814c09 | 629 | if(foundClr >= 2) { |
630 | s.CookdEdx(); | |
88cb7938 | 631 | CookLabel(ps, 1-fgkLabelFraction); |
a9814c09 | 632 | UseClusters(ps); |
633 | } | |
0d5b5c27 | 634 | |
635 | // Propagate to outer reference plane [SR, GSI, 18.02.2003] | |
636 | ps->PropagateTo(364.8); | |
5443e65e | 637 | otrack_trd=ps; |
638 | trdTree.Fill(); | |
e24ea474 | 639 | found++; |
640 | // cout<<found<<'\r'; | |
46d29e70 | 641 | } |
a819a5f7 | 642 | |
5443e65e | 643 | if(((expectedClr < 10) && (last_tb == outermost_tb)) || |
644 | ((expectedClr >= 10) && | |
a9814c09 | 645 | (((Float_t) foundClr) / ((Float_t) expectedClr) >= |
88cb7938 | 646 | fgkMinFractionOfFoundClusters) && (last_tb == outermost_tb))) { |
5443e65e | 647 | |
648 | Double_t x_tof = 375.5; | |
649 | ||
650 | if(PropagateToOuterPlane(s,x_tof)) { | |
a9814c09 | 651 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); |
652 | otrack = pt; | |
653 | tofTree1.Fill(); | |
654 | delete pt; | |
5443e65e | 655 | |
a9814c09 | 656 | x_tof = 381.5; |
5443e65e | 657 | |
a9814c09 | 658 | if(PropagateToOuterPlane(s,x_tof)) { |
659 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); | |
660 | otrack = pt; | |
661 | tofTree2.Fill(); | |
662 | delete pt; | |
663 | ||
664 | Double_t x_phos = 460.; | |
665 | ||
666 | if(PropagateToOuterPlane(s,x_phos)) { | |
667 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); | |
668 | otrack = pt; | |
669 | phosTree.Fill(); | |
670 | delete pt; | |
671 | ||
672 | Double_t x_rich = 490+1.267; | |
673 | ||
674 | if(PropagateToOuterPlane(s,x_rich)) { | |
675 | AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha()); | |
676 | otrack = pt; | |
677 | richTree.Fill(); | |
678 | delete pt; | |
679 | } | |
680 | } | |
681 | } | |
5443e65e | 682 | } |
46d29e70 | 683 | } |
684 | } | |
5443e65e | 685 | |
9c9d2487 | 686 | |
687 | out->cd(); | |
5443e65e | 688 | tofTree1.Write(); |
689 | tofTree2.Write(); | |
690 | phosTree.Write(); | |
691 | richTree.Write(); | |
692 | trdTree.Write(); | |
46d29e70 | 693 | |
9c9d2487 | 694 | if (IsStoringBarrel()) { // [SR, 03.04.2003] |
695 | fBarrelFile->cd(); | |
696 | fBarrelTree->Write(); | |
697 | fBarrelFile->Flush(); | |
698 | } | |
699 | ||
5443e65e | 700 | savedir->cd(); |
701 | cerr<<"Number of seeds: "<<nseed<<endl; | |
702 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
46d29e70 | 703 | |
5443e65e | 704 | UnloadEvent(); |
46d29e70 | 705 | |
5443e65e | 706 | return 0; |
46d29e70 | 707 | |
5443e65e | 708 | } |
46d29e70 | 709 | |
bbf92647 | 710 | |
5443e65e | 711 | //--------------------------------------------------------------------------- |
712 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) | |
713 | { | |
714 | // Starting from current position on track=t this function tries | |
715 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
716 | // if a close cluster is found. Returns the number of clusters | |
717 | // expected to be found in sensitive layers | |
bbf92647 | 718 | |
5443e65e | 719 | Float_t wIndex, wTB, wChi2; |
720 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
721 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
722 | Float_t wPx, wPy, wPz, wC; | |
723 | Double_t Px, Py, Pz; | |
724 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; | |
46d29e70 | 725 | |
5443e65e | 726 | Int_t trackIndex = t.GetLabel(); |
46d29e70 | 727 | |
5443e65e | 728 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
46d29e70 | 729 | |
5443e65e | 730 | Int_t try_again=fMaxGap; |
46d29e70 | 731 | |
5443e65e | 732 | Double_t alpha=t.GetAlpha(); |
9c9d2487 | 733 | TVector2::Phi_0_2pi(alpha); |
46d29e70 | 734 | |
5443e65e | 735 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
b3a5a838 | 736 | Double_t rad_length, rho, x, dx, y, ymax, z; |
46d29e70 | 737 | |
5443e65e | 738 | Int_t expectedNumberOfClusters = 0; |
739 | Bool_t lookForCluster; | |
46d29e70 | 740 | |
5443e65e | 741 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 742 | |
5443e65e | 743 | |
744 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
745 | ||
746 | y = t.GetY(); z = t.GetZ(); | |
747 | ||
748 | // first propagate to the inner surface of the current time bin | |
b3a5a838 | 749 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
5443e65e | 750 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
b3a5a838 | 751 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 752 | y = t.GetY(); |
753 | ymax = x*TMath::Tan(0.5*alpha); | |
754 | if (y > ymax) { | |
755 | s = (s+1) % ns; | |
756 | if (!t.Rotate(alpha)) break; | |
b3a5a838 | 757 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 758 | } else if (y <-ymax) { |
759 | s = (s-1+ns) % ns; | |
760 | if (!t.Rotate(-alpha)) break; | |
b3a5a838 | 761 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 762 | } |
46d29e70 | 763 | |
5443e65e | 764 | y = t.GetY(); z = t.GetZ(); |
765 | ||
766 | // now propagate to the middle plane of the next time bin | |
b3a5a838 | 767 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
5443e65e | 768 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
b3a5a838 | 769 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 770 | y = t.GetY(); |
771 | ymax = x*TMath::Tan(0.5*alpha); | |
772 | if (y > ymax) { | |
773 | s = (s+1) % ns; | |
774 | if (!t.Rotate(alpha)) break; | |
b3a5a838 | 775 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 776 | } else if (y <-ymax) { |
777 | s = (s-1+ns) % ns; | |
778 | if (!t.Rotate(-alpha)) break; | |
b3a5a838 | 779 | if(!t.PropagateTo(x,rad_length,rho)) break; |
5443e65e | 780 | } |
46d29e70 | 781 | |
46d29e70 | 782 | |
5443e65e | 783 | if(lookForCluster) { |
a819a5f7 | 784 | |
5443e65e | 785 | expectedNumberOfClusters++; |
5443e65e | 786 | wIndex = (Float_t) t.GetLabel(); |
787 | wTB = nr; | |
46d29e70 | 788 | |
5443e65e | 789 | AliTRDpropagationLayer& time_bin=*(fTrSec[s]->GetLayer(nr-1)); |
46d29e70 | 790 | |
5443e65e | 791 | Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); |
5443e65e | 792 | Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); |
46d29e70 | 793 | |
5443e65e | 794 | Double_t road; |
795 | if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); | |
796 | else return expectedNumberOfClusters; | |
797 | ||
798 | wYrt = (Float_t) y; | |
799 | wZrt = (Float_t) z; | |
800 | wYwindow = (Float_t) road; | |
801 | t.GetPxPyPz(Px,Py,Pz); | |
802 | wPx = (Float_t) Px; | |
803 | wPy = (Float_t) Py; | |
804 | wPz = (Float_t) Pz; | |
805 | wC = (Float_t) t.GetC(); | |
806 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
807 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
808 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
809 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
810 | wChi2 = -1; | |
811 | ||
88cb7938 | 812 | if (road>fgkWideRoad) { |
a9814c09 | 813 | if (t.GetNumberOfClusters()>4) |
814 | cerr<<t.GetNumberOfClusters() | |
815 | <<"FindProlongation warning: Too broad road !\n"; | |
816 | return 0; | |
5443e65e | 817 | } |
818 | ||
819 | AliTRDcluster *cl=0; | |
820 | UInt_t index=0; | |
821 | ||
88cb7938 | 822 | Double_t max_chi2=fgkMaxChi2; |
5443e65e | 823 | |
824 | wYclosest = 12345678; | |
825 | wYcorrect = 12345678; | |
826 | wZclosest = 12345678; | |
827 | wZcorrect = 12345678; | |
828 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
829 | ||
830 | // Find the closest correct cluster for debugging purposes | |
831 | if (time_bin) { | |
a9814c09 | 832 | Float_t minDY = 1000000; |
833 | for (Int_t i=0; i<time_bin; i++) { | |
834 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
835 | if((c->GetLabel(0) != trackIndex) && | |
836 | (c->GetLabel(1) != trackIndex) && | |
837 | (c->GetLabel(2) != trackIndex)) continue; | |
838 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
839 | minDY = TMath::Abs(c->GetY() - y); | |
840 | wYcorrect = c->GetY(); | |
841 | wZcorrect = c->GetZ(); | |
842 | ||
843 | Double_t h01 = GetTiltFactor(c); | |
844 | wChi2 = t.GetPredictedChi2(c, h01); | |
845 | } | |
5443e65e | 846 | } |
46d29e70 | 847 | |
5443e65e | 848 | // Now go for the real cluster search |
a819a5f7 | 849 | |
5443e65e | 850 | if (time_bin) { |
a819a5f7 | 851 | |
a9814c09 | 852 | for (Int_t i=time_bin.Find(y-road); i<time_bin; i++) { |
853 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
854 | if (c->GetY() > y+road) break; | |
855 | if (c->IsUsed() > 0) continue; | |
856 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; | |
857 | ||
858 | Double_t h01 = GetTiltFactor(c); | |
859 | Double_t chi2=t.GetPredictedChi2(c,h01); | |
860 | ||
861 | if (chi2 > max_chi2) continue; | |
862 | max_chi2=chi2; | |
863 | cl=c; | |
864 | index=time_bin.GetIndex(i); | |
865 | } | |
866 | ||
867 | if(!cl) { | |
868 | ||
869 | for (Int_t i=time_bin.Find(y-road); i<time_bin; i++) { | |
870 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
871 | ||
872 | if (c->GetY() > y+road) break; | |
873 | if (c->IsUsed() > 0) continue; | |
874 | if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; | |
875 | ||
876 | Double_t h01 = GetTiltFactor(c); | |
877 | Double_t chi2=t.GetPredictedChi2(c, h01); | |
878 | ||
879 | if (chi2 > max_chi2) continue; | |
880 | max_chi2=chi2; | |
881 | cl=c; | |
882 | index=time_bin.GetIndex(i); | |
883 | } | |
884 | } | |
885 | ||
886 | ||
887 | if (cl) { | |
888 | wYclosest = cl->GetY(); | |
889 | wZclosest = cl->GetZ(); | |
890 | Double_t h01 = GetTiltFactor(cl); | |
891 | ||
892 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
893 | if(!t.Update(cl,max_chi2,index,h01)) { | |
894 | if(!try_again--) return 0; | |
895 | } | |
896 | else try_again=fMaxGap; | |
897 | } | |
898 | else { | |
899 | if (try_again==0) break; | |
900 | try_again--; | |
901 | } | |
902 | ||
903 | /* | |
904 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
905 | ||
906 | printf(" %f", wIndex); //1 | |
907 | printf(" %f", wTB); //2 | |
908 | printf(" %f", wYrt); //3 | |
909 | printf(" %f", wYclosest); //4 | |
910 | printf(" %f", wYcorrect); //5 | |
911 | printf(" %f", wYwindow); //6 | |
912 | printf(" %f", wZrt); //7 | |
913 | printf(" %f", wZclosest); //8 | |
914 | printf(" %f", wZcorrect); //9 | |
915 | printf(" %f", wZwindow); //10 | |
916 | printf(" %f", wPx); //11 | |
917 | printf(" %f", wPy); //12 | |
918 | printf(" %f", wPz); //13 | |
919 | printf(" %f", wSigmaC2*1000000); //14 | |
920 | printf(" %f", wSigmaTgl2*1000); //15 | |
921 | printf(" %f", wSigmaY2); //16 | |
922 | // printf(" %f", wSigmaZ2); //17 | |
923 | printf(" %f", wChi2); //17 | |
924 | printf(" %f", wC); //18 | |
925 | printf("\n"); | |
926 | } | |
927 | */ | |
5443e65e | 928 | } |
929 | } | |
930 | } | |
931 | return expectedNumberOfClusters; | |
932 | ||
933 | ||
934 | } | |
a819a5f7 | 935 | |
5443e65e | 936 | //___________________________________________________________________ |
46d29e70 | 937 | |
5443e65e | 938 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
939 | { | |
940 | // Starting from current radial position of track <t> this function | |
941 | // extrapolates the track up to outer timebin and in the sensitive | |
942 | // layers confirms prolongation if a close cluster is found. | |
943 | // Returns the number of clusters expected to be found in sensitive layers | |
46d29e70 | 944 | |
5443e65e | 945 | Float_t wIndex, wTB, wChi2; |
946 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
947 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
948 | Float_t wPx, wPy, wPz, wC; | |
949 | Double_t Px, Py, Pz; | |
950 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; | |
46d29e70 | 951 | |
5443e65e | 952 | Int_t trackIndex = t.GetLabel(); |
5443e65e | 953 | Int_t try_again=fMaxGap; |
46d29e70 | 954 | |
5443e65e | 955 | Double_t alpha=t.GetAlpha(); |
9c9d2487 | 956 | TVector2::Phi_0_2pi(alpha); |
46d29e70 | 957 | |
9c9d2487 | 958 | Int_t s; |
46d29e70 | 959 | |
5443e65e | 960 | Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); |
9c9d2487 | 961 | Double_t rad_length, rho, x, dx, y, ymax = 0, z; |
5443e65e | 962 | Bool_t lookForCluster; |
a819a5f7 | 963 | |
5443e65e | 964 | Int_t expectedNumberOfClusters = 0; |
965 | x = t.GetX(); | |
46d29e70 | 966 | |
5443e65e | 967 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 968 | |
9c9d2487 | 969 | Int_t nRefPlane = kFirstPlane; |
970 | Bool_t isNewLayer = kFALSE; | |
46d29e70 | 971 | |
9c9d2487 | 972 | Double_t chi2; |
973 | Double_t minDY; | |
46d29e70 | 974 | |
9c9d2487 | 975 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) { |
976 | ||
977 | y = t.GetY(); | |
978 | z = t.GetZ(); | |
46d29e70 | 979 | |
5443e65e | 980 | // first propagate to the outer surface of the current time bin |
46d29e70 | 981 | |
9c9d2487 | 982 | s = t.GetSector(); |
b3a5a838 | 983 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
9c9d2487 | 984 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; |
985 | y = t.GetY(); | |
986 | z = t.GetZ(); | |
46d29e70 | 987 | |
b3a5a838 | 988 | if(!t.PropagateTo(x,rad_length,rho)) break; |
9c9d2487 | 989 | if (!AdjustSector(&t)) break; |
990 | s = t.GetSector(); | |
991 | if (!t.PropagateTo(x,rad_length,rho)) break; | |
46d29e70 | 992 | |
5443e65e | 993 | y = t.GetY(); |
9c9d2487 | 994 | z = t.GetZ(); |
a819a5f7 | 995 | |
9c9d2487 | 996 | // Barrel Tracks [SR, 04.04.2003] |
46d29e70 | 997 | |
9c9d2487 | 998 | s = t.GetSector(); |
999 | if (fTrSec[s]->GetLayer(nr)->IsSensitive() != | |
1000 | fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { | |
46d29e70 | 1001 | |
88cb7938 | 1002 | if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); |
9c9d2487 | 1003 | } |
46d29e70 | 1004 | |
9c9d2487 | 1005 | if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && |
1006 | ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { | |
1007 | isNewLayer = kTRUE; | |
1008 | } else {isNewLayer = kFALSE;} | |
46d29e70 | 1009 | |
5443e65e | 1010 | y = t.GetY(); |
9c9d2487 | 1011 | z = t.GetZ(); |
a819a5f7 | 1012 | |
9c9d2487 | 1013 | // now propagate to the middle plane of the next time bin |
1014 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); | |
5443e65e | 1015 | |
9c9d2487 | 1016 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); |
b3a5a838 | 1017 | if(!t.PropagateTo(x,rad_length,rho)) break; |
9c9d2487 | 1018 | if (!AdjustSector(&t)) break; |
1019 | s = t.GetSector(); | |
b3a5a838 | 1020 | if(!t.PropagateTo(x,rad_length,rho)) break; |
46d29e70 | 1021 | |
9c9d2487 | 1022 | y = t.GetY(); |
1023 | z = t.GetZ(); | |
1024 | ||
1025 | if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); | |
5443e65e | 1026 | // printf("label %d, pl %d, lookForCluster %d \n", |
a9814c09 | 1027 | // trackIndex, nr+1, lookForCluster); |
5443e65e | 1028 | |
1029 | if(lookForCluster) { | |
1030 | expectedNumberOfClusters++; | |
1031 | ||
1032 | wIndex = (Float_t) t.GetLabel(); | |
1033 | wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); | |
1034 | ||
1035 | AliTRDpropagationLayer& time_bin=*(fTrSec[s]->GetLayer(nr+1)); | |
1036 | Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); | |
1037 | Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); | |
1038 | if((t.GetSigmaY2() + sy2) < 0) break; | |
1039 | Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); | |
1040 | Double_t y=t.GetY(), z=t.GetZ(); | |
1041 | ||
1042 | wYrt = (Float_t) y; | |
1043 | wZrt = (Float_t) z; | |
1044 | wYwindow = (Float_t) road; | |
1045 | t.GetPxPyPz(Px,Py,Pz); | |
1046 | wPx = (Float_t) Px; | |
1047 | wPy = (Float_t) Py; | |
1048 | wPz = (Float_t) Pz; | |
1049 | wC = (Float_t) t.GetC(); | |
1050 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
1051 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
1052 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
1053 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
1054 | wChi2 = -1; | |
1055 | ||
88cb7938 | 1056 | if (road>fgkWideRoad) { |
a9814c09 | 1057 | if (t.GetNumberOfClusters()>4) |
1058 | cerr<<t.GetNumberOfClusters() | |
1059 | <<"FindProlongation warning: Too broad road !\n"; | |
1060 | return 0; | |
5443e65e | 1061 | } |
1062 | ||
1063 | AliTRDcluster *cl=0; | |
1064 | UInt_t index=0; | |
1065 | ||
88cb7938 | 1066 | Double_t max_chi2=fgkMaxChi2; |
5443e65e | 1067 | |
9c9d2487 | 1068 | if (isNewLayer) { |
1069 | road = 3 * road; | |
1070 | //sz2 = 3 * sz2; | |
88cb7938 | 1071 | max_chi2 = 10 * fgkMaxChi2; |
9c9d2487 | 1072 | } |
1073 | ||
88cb7938 | 1074 | if (nRefPlane == kFirstPlane) max_chi2 = 20 * fgkMaxChi2; |
1075 | if (nRefPlane == kFirstPlane+2) max_chi2 = 15 * fgkMaxChi2; | |
9c9d2487 | 1076 | if (t.GetNRotate() > 0) max_chi2 = 3 * max_chi2; |
1077 | ||
1078 | ||
5443e65e | 1079 | wYclosest = 12345678; |
1080 | wYcorrect = 12345678; | |
1081 | wZclosest = 12345678; | |
1082 | wZcorrect = 12345678; | |
1083 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
1084 | ||
1085 | // Find the closest correct cluster for debugging purposes | |
1086 | if (time_bin) { | |
9c9d2487 | 1087 | minDY = 1000000; |
a9814c09 | 1088 | for (Int_t i=0; i<time_bin; i++) { |
1089 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
1090 | if((c->GetLabel(0) != trackIndex) && | |
1091 | (c->GetLabel(1) != trackIndex) && | |
1092 | (c->GetLabel(2) != trackIndex)) continue; | |
1093 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
9c9d2487 | 1094 | //minDY = TMath::Abs(c->GetY() - y); |
1095 | minDY = c->GetY() - y; | |
a9814c09 | 1096 | wYcorrect = c->GetY(); |
1097 | wZcorrect = c->GetZ(); | |
1098 | ||
1099 | Double_t h01 = GetTiltFactor(c); | |
1100 | wChi2 = t.GetPredictedChi2(c, h01); | |
1101 | } | |
5443e65e | 1102 | } |
46d29e70 | 1103 | |
5443e65e | 1104 | // Now go for the real cluster search |
46d29e70 | 1105 | |
5443e65e | 1106 | if (time_bin) { |
1107 | ||
a9814c09 | 1108 | for (Int_t i=time_bin.Find(y-road); i<time_bin; i++) { |
1109 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
1110 | if (c->GetY() > y+road) break; | |
9c9d2487 | 1111 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1112 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; |
1113 | ||
1114 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1115 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1116 | |
1117 | if (chi2 > max_chi2) continue; | |
1118 | max_chi2=chi2; | |
1119 | cl=c; | |
1120 | index=time_bin.GetIndex(i); | |
9c9d2487 | 1121 | |
1122 | //check is correct | |
1123 | if((c->GetLabel(0) != trackIndex) && | |
1124 | (c->GetLabel(1) != trackIndex) && | |
1125 | (c->GetLabel(2) != trackIndex)) t.AddNWrong(); | |
a9814c09 | 1126 | } |
5443e65e | 1127 | |
a9814c09 | 1128 | if(!cl) { |
1129 | ||
1130 | for (Int_t i=time_bin.Find(y-road); i<time_bin; i++) { | |
1131 | AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]); | |
1132 | ||
1133 | if (c->GetY() > y+road) break; | |
9c9d2487 | 1134 | if (c->IsUsed() > 0) continue; |
a9814c09 | 1135 | if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; |
1136 | ||
1137 | Double_t h01 = GetTiltFactor(c); | |
9c9d2487 | 1138 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 | 1139 | |
1140 | if (chi2 > max_chi2) continue; | |
1141 | max_chi2=chi2; | |
1142 | cl=c; | |
1143 | index=time_bin.GetIndex(i); | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | if (cl) { | |
1148 | wYclosest = cl->GetY(); | |
1149 | wZclosest = cl->GetZ(); | |
1150 | ||
1151 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1152 | Double_t h01 = GetTiltFactor(cl); | |
1153 | if(!t.Update(cl,max_chi2,index,h01)) { | |
1154 | if(!try_again--) return 0; | |
1155 | } | |
1156 | else try_again=fMaxGap; | |
1157 | } | |
1158 | else { | |
1159 | if (try_again==0) break; | |
1160 | try_again--; | |
9c9d2487 | 1161 | |
1162 | //if (minDY < 1000000 && isNewLayer) | |
1163 | //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" << | |
1164 | // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << max_chi2 << endl; | |
1165 | ||
a9814c09 | 1166 | } |
1167 | ||
9c9d2487 | 1168 | isNewLayer = kFALSE; |
1169 | ||
a9814c09 | 1170 | /* |
1171 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { | |
1172 | ||
1173 | printf(" %f", wIndex); //1 | |
1174 | printf(" %f", wTB); //2 | |
1175 | printf(" %f", wYrt); //3 | |
1176 | printf(" %f", wYclosest); //4 | |
1177 | printf(" %f", wYcorrect); //5 | |
1178 | printf(" %f", wYwindow); //6 | |
1179 | printf(" %f", wZrt); //7 | |
1180 | printf(" %f", wZclosest); //8 | |
1181 | printf(" %f", wZcorrect); //9 | |
1182 | printf(" %f", wZwindow); //10 | |
1183 | printf(" %f", wPx); //11 | |
1184 | printf(" %f", wPy); //12 | |
1185 | printf(" %f", wPz); //13 | |
1186 | printf(" %f", wSigmaC2*1000000); //14 | |
1187 | printf(" %f", wSigmaTgl2*1000); //15 | |
1188 | printf(" %f", wSigmaY2); //16 | |
1189 | // printf(" %f", wSigmaZ2); //17 | |
1190 | printf(" %f", wChi2); //17 | |
1191 | printf(" %f", wC); //18 | |
1192 | printf("\n"); | |
1193 | } | |
1194 | */ | |
5443e65e | 1195 | } |
1196 | } | |
1197 | } | |
1198 | return expectedNumberOfClusters; | |
9c9d2487 | 1199 | |
1200 | ||
5443e65e | 1201 | } |
1202 | ||
1203 | //___________________________________________________________________ | |
1204 | ||
1205 | Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) | |
1206 | { | |
1207 | // Starting from current radial position of track <t> this function | |
1208 | // extrapolates the track up to radial position <xToGo>. | |
1209 | // Returns 1 if track reaches the plane, and 0 otherwise | |
1210 | ||
1211 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1212 | ||
1213 | Double_t alpha=t.GetAlpha(); | |
1214 | ||
1215 | if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); | |
1216 | if (alpha < 0. ) alpha += 2.*TMath::Pi(); | |
1217 | ||
1218 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1219 | ||
1220 | Bool_t lookForCluster; | |
b3a5a838 | 1221 | Double_t rad_length, rho, x, dx, y, ymax, z; |
5443e65e | 1222 | |
1223 | x = t.GetX(); | |
1224 | ||
1225 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1226 | ||
1227 | Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); | |
1228 | ||
1229 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr<plToGo; nr++) { | |
1230 | ||
1231 | y = t.GetY(); z = t.GetZ(); | |
1232 | ||
1233 | // first propagate to the outer surface of the current time bin | |
b3a5a838 | 1234 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
5443e65e | 1235 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); |
b3a5a838 | 1236 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1237 | y = t.GetY(); |
1238 | ymax = x*TMath::Tan(0.5*alpha); | |
1239 | if (y > ymax) { | |
1240 | s = (s+1) % ns; | |
1241 | if (!t.Rotate(alpha)) return 0; | |
1242 | } else if (y <-ymax) { | |
1243 | s = (s-1+ns) % ns; | |
1244 | if (!t.Rotate(-alpha)) return 0; | |
1245 | } | |
b3a5a838 | 1246 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1247 | |
1248 | y = t.GetY(); z = t.GetZ(); | |
1249 | ||
1250 | // now propagate to the middle plane of the next time bin | |
b3a5a838 | 1251 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
5443e65e | 1252 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); |
b3a5a838 | 1253 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1254 | y = t.GetY(); |
1255 | ymax = x*TMath::Tan(0.5*alpha); | |
1256 | if (y > ymax) { | |
1257 | s = (s+1) % ns; | |
1258 | if (!t.Rotate(alpha)) return 0; | |
1259 | } else if (y <-ymax) { | |
1260 | s = (s-1+ns) % ns; | |
1261 | if (!t.Rotate(-alpha)) return 0; | |
1262 | } | |
b3a5a838 | 1263 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1264 | } |
1265 | return 1; | |
1266 | } | |
1267 | ||
1268 | //___________________________________________________________________ | |
1269 | ||
1270 | Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) | |
1271 | { | |
1272 | // Starting from current radial position of track <t> this function | |
1273 | // extrapolates the track up to radial position of the outermost | |
1274 | // padrow of the TPC. | |
1275 | // Returns 1 if track reaches the TPC, and 0 otherwise | |
1276 | ||
1277 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1278 | ||
1279 | Double_t alpha=t.GetAlpha(); | |
9c9d2487 | 1280 | TVector2::Phi_0_2pi(alpha); |
5443e65e | 1281 | |
1282 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1283 | ||
1284 | Bool_t lookForCluster; | |
b3a5a838 | 1285 | Double_t rad_length, rho, x, dx, y, ymax, z; |
5443e65e | 1286 | |
1287 | x = t.GetX(); | |
1288 | ||
1289 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
5443e65e | 1290 | Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); |
1291 | ||
1292 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { | |
1293 | ||
9c9d2487 | 1294 | y = t.GetY(); |
1295 | z = t.GetZ(); | |
5443e65e | 1296 | |
1297 | // first propagate to the outer surface of the current time bin | |
b3a5a838 | 1298 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
9c9d2487 | 1299 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; |
1300 | ||
b3a5a838 | 1301 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
9c9d2487 | 1302 | AdjustSector(&t); |
b3a5a838 | 1303 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1304 | |
9c9d2487 | 1305 | y = t.GetY(); |
1306 | z = t.GetZ(); | |
5443e65e | 1307 | |
1308 | // now propagate to the middle plane of the next time bin | |
b3a5a838 | 1309 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,rad_length,lookForCluster); |
9c9d2487 | 1310 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); |
1311 | ||
b3a5a838 | 1312 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
9c9d2487 | 1313 | AdjustSector(&t); |
b3a5a838 | 1314 | if(!t.PropagateTo(x,rad_length,rho)) return 0; |
5443e65e | 1315 | } |
1316 | return 1; | |
1317 | } | |
1318 | ||
5443e65e | 1319 | //_____________________________________________________________________________ |
1320 | void AliTRDtracker::LoadEvent() | |
1321 | { | |
1322 | // Fills clusters into TRD tracking_sectors | |
1323 | // Note that the numbering scheme for the TRD tracking_sectors | |
1324 | // differs from that of TRD sectors | |
1325 | ||
1326 | ReadClusters(fClusters); | |
1327 | Int_t ncl=fClusters->GetEntriesFast(); | |
1328 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; | |
1329 | ||
1330 | UInt_t index; | |
1331 | while (ncl--) { | |
e24ea474 | 1332 | // printf("\r %d left ",ncl); |
5443e65e | 1333 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); |
1334 | Int_t detector=c->GetDetector(), local_time_bin=c->GetLocalTimeBin(); | |
1335 | Int_t sector=fGeom->GetSector(detector); | |
1336 | Int_t plane=fGeom->GetPlane(detector); | |
1337 | ||
1338 | Int_t tracking_sector = CookSectorIndex(sector); | |
1339 | ||
1340 | Int_t gtb = fTrSec[tracking_sector]->CookTimeBinIndex(plane,local_time_bin); | |
b3a5a838 | 1341 | if(gtb < 0) continue; |
5443e65e | 1342 | Int_t layer = fTrSec[tracking_sector]->GetLayerNumber(gtb); |
1343 | ||
1344 | index=ncl; | |
1345 | fTrSec[tracking_sector]->GetLayer(layer)->InsertCluster(c,index); | |
1346 | } | |
1347 | printf("\r\n"); | |
1348 | ||
1349 | } | |
1350 | ||
1351 | //_____________________________________________________________________________ | |
1352 | void AliTRDtracker::UnloadEvent() | |
1353 | { | |
1354 | // | |
1355 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1356 | // | |
1357 | ||
1358 | Int_t i, nentr; | |
1359 | ||
1360 | nentr = fClusters->GetEntriesFast(); | |
1361 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); | |
1362 | ||
1363 | nentr = fSeeds->GetEntriesFast(); | |
1364 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); | |
1365 | ||
1366 | nentr = fTracks->GetEntriesFast(); | |
1367 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); | |
1368 | ||
1369 | Int_t nsec = AliTRDgeometry::kNsect; | |
1370 | ||
1371 | for (i = 0; i < nsec; i++) { | |
1372 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1373 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | } | |
1378 | ||
1379 | //__________________________________________________________________________ | |
1380 | void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) | |
1381 | { | |
1382 | // Creates track seeds using clusters in timeBins=i1,i2 | |
1383 | ||
1384 | if(turn > 2) { | |
1385 | cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl; | |
1386 | return; | |
1387 | } | |
1388 | ||
1389 | Double_t x[5], c[15]; | |
1390 | Int_t max_sec=AliTRDgeometry::kNsect; | |
1391 | ||
1392 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
1393 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; | |
1394 | Double_t cs=cos(alpha), sn=sin(alpha); | |
1395 | Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); | |
1396 | ||
1397 | ||
1398 | Int_t i2 = fTrSec[0]->GetLayerNumber(inner); | |
1399 | Int_t i1 = fTrSec[0]->GetLayerNumber(outer); | |
1400 | ||
1401 | Double_t x1 =fTrSec[0]->GetX(i1); | |
1402 | Double_t xx2=fTrSec[0]->GetX(i2); | |
1403 | ||
1404 | for (Int_t ns=0; ns<max_sec; ns++) { | |
1405 | ||
1406 | Int_t nl2 = *(fTrSec[(ns-2+max_sec)%max_sec]->GetLayer(i2)); | |
1407 | Int_t nl=(*fTrSec[(ns-1+max_sec)%max_sec]->GetLayer(i2)); | |
1408 | Int_t nm=(*fTrSec[ns]->GetLayer(i2)); | |
1409 | Int_t nu=(*fTrSec[(ns+1)%max_sec]->GetLayer(i2)); | |
1410 | Int_t nu2=(*fTrSec[(ns+2)%max_sec]->GetLayer(i2)); | |
1411 | ||
1412 | AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); | |
1413 | ||
1414 | for (Int_t is=0; is < r1; is++) { | |
1415 | Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); | |
1416 | ||
1417 | for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { | |
a9814c09 | 1418 | |
1419 | const AliTRDcluster *cl; | |
1420 | Double_t x2, y2, z2; | |
1421 | Double_t x3=0., y3=0.; | |
1422 | ||
1423 | if (js<nl2) { | |
1424 | if(turn != 2) continue; | |
1425 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+max_sec)%max_sec]->GetLayer(i2)); | |
1426 | cl=r2[js]; | |
1427 | y2=cl->GetY(); z2=cl->GetZ(); | |
1428 | ||
1429 | x2= xx2*cs2+y2*sn2; | |
1430 | y2=-xx2*sn2+y2*cs2; | |
1431 | } | |
1432 | else if (js<nl2+nl) { | |
1433 | if(turn != 1) continue; | |
1434 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+max_sec)%max_sec]->GetLayer(i2)); | |
1435 | cl=r2[js-nl2]; | |
1436 | y2=cl->GetY(); z2=cl->GetZ(); | |
1437 | ||
1438 | x2= xx2*cs+y2*sn; | |
1439 | y2=-xx2*sn+y2*cs; | |
1440 | } | |
1441 | else if (js<nl2+nl+nm) { | |
1442 | if(turn != 1) continue; | |
1443 | AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2)); | |
1444 | cl=r2[js-nl2-nl]; | |
1445 | x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); | |
1446 | } | |
1447 | else if (js<nl2+nl+nm+nu) { | |
1448 | if(turn != 1) continue; | |
1449 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%max_sec]->GetLayer(i2)); | |
1450 | cl=r2[js-nl2-nl-nm]; | |
1451 | y2=cl->GetY(); z2=cl->GetZ(); | |
1452 | ||
1453 | x2=xx2*cs-y2*sn; | |
1454 | y2=xx2*sn+y2*cs; | |
1455 | } | |
1456 | else { | |
1457 | if(turn != 2) continue; | |
1458 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%max_sec]->GetLayer(i2)); | |
1459 | cl=r2[js-nl2-nl-nm-nu]; | |
1460 | y2=cl->GetY(); z2=cl->GetZ(); | |
1461 | ||
1462 | x2=xx2*cs2-y2*sn2; | |
1463 | y2=xx2*sn2+y2*cs2; | |
1464 | } | |
1465 | ||
88cb7938 | 1466 | if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; |
a9814c09 | 1467 | |
1468 | Double_t zz=z1 - z1/x1*(x1-x2); | |
1469 | ||
88cb7938 | 1470 | if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; |
a9814c09 | 1471 | |
1472 | Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); | |
1473 | if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} | |
1474 | ||
1475 | x[0]=y1; | |
1476 | x[1]=z1; | |
1477 | x[4]=f1trd(x1,y1,x2,y2,x3,y3); | |
1478 | ||
88cb7938 | 1479 | if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; |
a9814c09 | 1480 | |
1481 | x[2]=f2trd(x1,y1,x2,y2,x3,y3); | |
1482 | ||
1483 | if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; | |
1484 | ||
1485 | x[3]=f3trd(x1,y1,x2,y2,z1,z2); | |
1486 | ||
88cb7938 | 1487 | if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; |
a9814c09 | 1488 | |
1489 | Double_t a=asin(x[2]); | |
1490 | Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); | |
1491 | ||
88cb7938 | 1492 | if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; |
a9814c09 | 1493 | |
1494 | Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); | |
1495 | Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); | |
88cb7938 | 1496 | Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; |
a9814c09 | 1497 | |
1498 | // Tilt changes | |
1499 | Double_t h01 = GetTiltFactor(r1[is]); | |
b8dc2353 | 1500 | Double_t xu_factor = 100.; |
1501 | if(fNoTilt) { | |
1502 | h01 = 0; | |
1503 | xu_factor = 1; | |
1504 | } | |
1505 | ||
fd621f36 | 1506 | sy1=sy1+sz1*h01*h01; |
b3a5a838 | 1507 | Double_t syz=sz1*(-h01); |
a9814c09 | 1508 | // end of tilt changes |
1509 | ||
b3a5a838 | 1510 | Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; |
1511 | Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; | |
1512 | Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; | |
1513 | Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; | |
1514 | Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; | |
1515 | Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; | |
1516 | Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; | |
1517 | Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; | |
1518 | Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; | |
1519 | Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; | |
1520 | ||
a9814c09 | 1521 | |
b3a5a838 | 1522 | c[0]=sy1; |
a9814c09 | 1523 | // c[1]=0.; c[2]=sz1; |
b8dc2353 | 1524 | c[1]=syz; c[2]=sz1*xu_factor; |
b3a5a838 | 1525 | c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; |
1526 | c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; | |
1527 | c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; | |
1528 | c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; | |
1529 | c[13]=f30*sy1*f40+f32*sy2*f42; | |
1530 | c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; | |
a9814c09 | 1531 | |
1532 | UInt_t index=r1.GetIndex(is); | |
1533 | ||
1534 | AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); | |
1535 | ||
1536 | Int_t rc=FollowProlongation(*track, i2); | |
1537 | ||
1538 | if ((rc < 1) || | |
1539 | (track->GetNumberOfClusters() < | |
88cb7938 | 1540 | (outer-inner)*fgkMinClustersInSeed)) delete track; |
a9814c09 | 1541 | else { |
1542 | fSeeds->AddLast(track); fNseeds++; | |
e24ea474 | 1543 | // cerr<<"\r found seed "<<fNseeds; |
a9814c09 | 1544 | } |
5443e65e | 1545 | } |
1546 | } | |
1547 | } | |
1548 | } | |
1549 | ||
1550 | //_____________________________________________________________________________ | |
1551 | void AliTRDtracker::ReadClusters(TObjArray *array, const TFile *inp) | |
1552 | { | |
1553 | // | |
a819a5f7 | 1554 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
1555 | // from the file. The names of the cluster tree and branches | |
1556 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
1557 | // | |
46d29e70 | 1558 | |
a819a5f7 | 1559 | TDirectory *savedir=gDirectory; |
1560 | ||
5443e65e | 1561 | if (inp) { |
1562 | TFile *in=(TFile*)inp; | |
1563 | if (!in->IsOpen()) { | |
1564 | cerr<<"AliTRDtracker::ReadClusters(): input file is not open !\n"; | |
1565 | return; | |
1566 | } | |
1567 | else{ | |
1568 | in->cd(); | |
1569 | } | |
1570 | } | |
a819a5f7 | 1571 | |
abaf1f1d | 1572 | Char_t treeName[12]; |
e24ea474 | 1573 | sprintf(treeName,"TreeR%d_TRD",GetEventNumber()); |
5443e65e | 1574 | TTree *ClusterTree = (TTree*) gDirectory->Get(treeName); |
1575 | ||
1576 | TObjArray *ClusterArray = new TObjArray(400); | |
1577 | ||
1578 | ClusterTree->GetBranch("TRDcluster")->SetAddress(&ClusterArray); | |
1579 | ||
1580 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); | |
1581 | printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); | |
a819a5f7 | 1582 | |
a819a5f7 | 1583 | // Loop through all entries in the tree |
1584 | Int_t nbytes; | |
1585 | AliTRDcluster *c = 0; | |
5443e65e | 1586 | printf("\n"); |
a819a5f7 | 1587 | |
1588 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { | |
1589 | ||
1590 | // Import the tree | |
5443e65e | 1591 | nbytes += ClusterTree->GetEvent(iEntry); |
1592 | ||
a819a5f7 | 1593 | // Get the number of points in the detector |
5443e65e | 1594 | Int_t nCluster = ClusterArray->GetEntriesFast(); |
e24ea474 | 1595 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 1596 | |
a819a5f7 | 1597 | // Loop through all TRD digits |
1598 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
5443e65e | 1599 | c = (AliTRDcluster*)ClusterArray->UncheckedAt(iCluster); |
a819a5f7 | 1600 | AliTRDcluster *co = new AliTRDcluster(*c); |
1601 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
5443e65e | 1602 | Int_t ltb = co->GetLocalTimeBin(); |
b8dc2353 | 1603 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
1604 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
a819a5f7 | 1605 | array->AddLast(co); |
5443e65e | 1606 | delete ClusterArray->RemoveAt(iCluster); |
a819a5f7 | 1607 | } |
1608 | } | |
1609 | ||
5443e65e | 1610 | delete ClusterArray; |
1611 | savedir->cd(); | |
1612 | ||
a819a5f7 | 1613 | } |
1614 | ||
5443e65e | 1615 | //______________________________________________________________________ |
1616 | void AliTRDtracker::ReadClusters(TObjArray *array, const Char_t *filename) | |
a819a5f7 | 1617 | { |
1618 | // | |
5443e65e | 1619 | // Reads AliTRDclusters from file <filename>. The names of the cluster |
1620 | // tree and branches should match the ones used in | |
1621 | // AliTRDclusterizer::WriteClusters() | |
1622 | // if <array> == 0, clusters are added into AliTRDtracker fCluster array | |
a819a5f7 | 1623 | // |
1624 | ||
5443e65e | 1625 | TDirectory *savedir=gDirectory; |
46d29e70 | 1626 | |
5443e65e | 1627 | TFile *file = TFile::Open(filename); |
1628 | if (!file->IsOpen()) { | |
1629 | cerr<<"Can't open file with TRD clusters"<<endl; | |
1630 | return; | |
1631 | } | |
46d29e70 | 1632 | |
5443e65e | 1633 | Char_t treeName[12]; |
e24ea474 | 1634 | sprintf(treeName,"TreeR%d_TRD",GetEventNumber()); |
5443e65e | 1635 | TTree *ClusterTree = (TTree*) gDirectory->Get(treeName); |
46d29e70 | 1636 | |
5443e65e | 1637 | if (!ClusterTree) { |
1638 | cerr<<"AliTRDtracker::ReadClusters(): "; | |
1639 | cerr<<"can't get a tree with clusters !\n"; | |
1640 | return; | |
1641 | } | |
46d29e70 | 1642 | |
5443e65e | 1643 | TObjArray *ClusterArray = new TObjArray(400); |
46d29e70 | 1644 | |
5443e65e | 1645 | ClusterTree->GetBranch("TRDcluster")->SetAddress(&ClusterArray); |
46d29e70 | 1646 | |
5443e65e | 1647 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); |
1648 | cout<<"found "<<nEntries<<" in ClusterTree"<<endl; | |
a819a5f7 | 1649 | |
5443e65e | 1650 | // Loop through all entries in the tree |
1651 | Int_t nbytes; | |
1652 | AliTRDcluster *c = 0; | |
bbf92647 | 1653 | |
5443e65e | 1654 | printf("\n"); |
bbf92647 | 1655 | |
5443e65e | 1656 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
46d29e70 | 1657 | |
5443e65e | 1658 | // Import the tree |
1659 | nbytes += ClusterTree->GetEvent(iEntry); | |
0a29d0f1 | 1660 | |
5443e65e | 1661 | // Get the number of points in the detector |
1662 | Int_t nCluster = ClusterArray->GetEntriesFast(); | |
b3a5a838 | 1663 | printf("\n Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 1664 | |
1665 | // Loop through all TRD digits | |
1666 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
1667 | c = (AliTRDcluster*)ClusterArray->UncheckedAt(iCluster); | |
1668 | AliTRDcluster *co = new AliTRDcluster(*c); | |
1669 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); | |
1670 | Int_t ltb = co->GetLocalTimeBin(); | |
b8dc2353 | 1671 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
1672 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
5443e65e | 1673 | array->AddLast(co); |
1674 | delete ClusterArray->RemoveAt(iCluster); | |
1675 | } | |
46d29e70 | 1676 | } |
0a29d0f1 | 1677 | |
5443e65e | 1678 | file->Close(); |
1679 | delete ClusterArray; | |
1680 | savedir->cd(); | |
1681 | ||
1682 | } | |
1683 | ||
46d29e70 | 1684 | |
1685 | //__________________________________________________________________ | |
5443e65e | 1686 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const { |
46d29e70 | 1687 | |
1688 | Int_t label=123456789, index, i, j; | |
5443e65e | 1689 | Int_t ncl=pt->GetNumberOfClusters(); |
1690 | const Int_t range = fTrSec[0]->GetOuterTimeBin()+1; | |
1691 | ||
1692 | Bool_t label_added; | |
46d29e70 | 1693 | |
5443e65e | 1694 | // Int_t s[range][2]; |
1695 | Int_t **s = new Int_t* [range]; | |
1696 | for (i=0; i<range; i++) { | |
d1b06c24 | 1697 | s[i] = new Int_t[2]; |
1698 | } | |
5443e65e | 1699 | for (i=0; i<range; i++) { |
46d29e70 | 1700 | s[i][0]=-1; |
1701 | s[i][1]=0; | |
1702 | } | |
1703 | ||
1704 | Int_t t0,t1,t2; | |
1705 | for (i=0; i<ncl; i++) { | |
5443e65e | 1706 | index=pt->GetClusterIndex(i); |
46d29e70 | 1707 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
5443e65e | 1708 | t0=c->GetLabel(0); |
1709 | t1=c->GetLabel(1); | |
1710 | t2=c->GetLabel(2); | |
46d29e70 | 1711 | } |
1712 | ||
1713 | for (i=0; i<ncl; i++) { | |
5443e65e | 1714 | index=pt->GetClusterIndex(i); |
46d29e70 | 1715 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
1716 | for (Int_t k=0; k<3; k++) { | |
5443e65e | 1717 | label=c->GetLabel(k); |
1718 | label_added=kFALSE; j=0; | |
46d29e70 | 1719 | if (label >= 0) { |
a9814c09 | 1720 | while ( (!label_added) && ( j < range ) ) { |
1721 | if (s[j][0]==label || s[j][1]==0) { | |
1722 | s[j][0]=label; | |
1723 | s[j][1]=s[j][1]+1; | |
1724 | label_added=kTRUE; | |
1725 | } | |
1726 | j++; | |
1727 | } | |
46d29e70 | 1728 | } |
1729 | } | |
1730 | } | |
1731 | ||
46d29e70 | 1732 | Int_t max=0; |
1733 | label = -123456789; | |
1734 | ||
5443e65e | 1735 | for (i=0; i<range; i++) { |
46d29e70 | 1736 | if (s[i][1]>max) { |
1737 | max=s[i][1]; label=s[i][0]; | |
1738 | } | |
1739 | } | |
5443e65e | 1740 | |
1741 | for (i=0; i<range; i++) { | |
1742 | delete []s[i]; | |
1743 | } | |
1744 | ||
d1b06c24 | 1745 | delete []s; |
5443e65e | 1746 | |
1747 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; | |
1748 | ||
1749 | pt->SetLabel(label); | |
1750 | ||
46d29e70 | 1751 | } |
1752 | ||
5443e65e | 1753 | //__________________________________________________________________ |
ca6c93d6 | 1754 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const { |
5443e65e | 1755 | Int_t ncl=t->GetNumberOfClusters(); |
1756 | for (Int_t i=from; i<ncl; i++) { | |
1757 | Int_t index = t->GetClusterIndex(i); | |
1758 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
1759 | c->Use(); | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | ||
1764 | //_____________________________________________________________________ | |
1765 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) | |
1766 | { | |
1767 | // Parametrised "expected" error of the cluster reconstruction in Y | |
1768 | ||
1769 | Double_t s = 0.08 * 0.08; | |
1770 | return s; | |
1771 | } | |
1772 | ||
1773 | //_____________________________________________________________________ | |
1774 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t r, Double_t tgl) | |
0a29d0f1 | 1775 | { |
5443e65e | 1776 | // Parametrised "expected" error of the cluster reconstruction in Z |
1777 | ||
a9814c09 | 1778 | Double_t s = 9 * 9 /12.; |
5443e65e | 1779 | return s; |
1780 | } | |
1781 | ||
1782 | ||
1783 | //_____________________________________________________________________ | |
1784 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t local_tb) const | |
1785 | { | |
1786 | // | |
1787 | // Returns radial position which corresponds to time bin <local_tb> | |
1788 | // in tracking sector <sector> and plane <plane> | |
1789 | // | |
1790 | ||
1791 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, local_tb); | |
1792 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); | |
1793 | return fTrSec[sector]->GetLayer(pl)->GetX(); | |
1794 | ||
1795 | } | |
1796 | ||
5443e65e | 1797 | //_______________________________________________________ |
1798 | AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, | |
a9814c09 | 1799 | Double_t dx, Double_t rho, Double_t rad_length, Int_t tb_index) |
5443e65e | 1800 | { |
0a29d0f1 | 1801 | // |
5443e65e | 1802 | // AliTRDpropagationLayer constructor |
0a29d0f1 | 1803 | // |
46d29e70 | 1804 | |
b3a5a838 | 1805 | fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = rad_length; |
5443e65e | 1806 | fClusters = NULL; fIndex = NULL; fTimeBinIndex = tb_index; |
1807 | ||
46d29e70 | 1808 | |
5443e65e | 1809 | for(Int_t i=0; i < (Int_t) kZONES; i++) { |
1810 | fZc[i]=0; fZmax[i] = 0; | |
a819a5f7 | 1811 | } |
5443e65e | 1812 | |
1813 | fYmax = 0; | |
1814 | ||
1815 | if(fTimeBinIndex >= 0) { | |
ca6c93d6 | 1816 | fClusters = new AliTRDcluster*[kMAX_CLUSTER_PER_TIME_BIN]; |
1817 | fIndex = new UInt_t[kMAX_CLUSTER_PER_TIME_BIN]; | |
a819a5f7 | 1818 | } |
46d29e70 | 1819 | |
5443e65e | 1820 | fHole = kFALSE; |
1821 | fHoleZc = 0; | |
1822 | fHoleZmax = 0; | |
1823 | fHoleYc = 0; | |
1824 | fHoleYmax = 0; | |
1825 | fHoleRho = 0; | |
1826 | fHoleX0 = 0; | |
1827 | ||
1828 | } | |
1829 | ||
1830 | //_______________________________________________________ | |
1831 | void AliTRDtracker::AliTRDpropagationLayer::SetHole( | |
a9814c09 | 1832 | Double_t Zmax, Double_t Ymax, Double_t rho, |
1833 | Double_t rad_length, Double_t Yc, Double_t Zc) | |
5443e65e | 1834 | { |
1835 | // | |
1836 | // Sets hole in the layer | |
1837 | // | |
1838 | ||
1839 | fHole = kTRUE; | |
1840 | fHoleZc = Zc; | |
1841 | fHoleZmax = Zmax; | |
1842 | fHoleYc = Yc; | |
1843 | fHoleYmax = Ymax; | |
1844 | fHoleRho = rho; | |
b3a5a838 | 1845 | fHoleX0 = rad_length; |
5443e65e | 1846 | } |
1847 | ||
46d29e70 | 1848 | |
5443e65e | 1849 | //_______________________________________________________ |
1850 | AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) | |
1851 | { | |
1852 | // | |
1853 | // AliTRDtrackingSector Constructor | |
1854 | // | |
1855 | ||
1856 | fGeom = geo; | |
1857 | fPar = par; | |
1858 | fGeomSector = gs; | |
1859 | fTzeroShift = 0.13; | |
1860 | fN = 0; | |
1861 | ||
1862 | for(UInt_t i=0; i < kMAX_TIME_BIN_INDEX; i++) fTimeBinIndex[i] = -1; | |
1863 | ||
1864 | ||
1865 | AliTRDpropagationLayer* ppl; | |
1866 | ||
b3a5a838 | 1867 | Double_t x, xin, xout, dx, rho, rad_length; |
5443e65e | 1868 | Int_t steps; |
46d29e70 | 1869 | |
5443e65e | 1870 | // set time bins in the gas of the TPC |
46d29e70 | 1871 | |
5443e65e | 1872 | xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; |
b3a5a838 | 1873 | rho = 0.9e-3; rad_length = 28.94; |
5443e65e | 1874 | |
1875 | for(Int_t i=0; i<steps; i++) { | |
1876 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1877 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1878 | InsertLayer(ppl); |
46d29e70 | 1879 | } |
1880 | ||
5443e65e | 1881 | // set time bins in the outer field cage vessel |
46d29e70 | 1882 | |
b3a5a838 | 1883 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; rad_length = 44.77; // Tedlar |
1884 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1885 | InsertLayer(ppl); |
46d29e70 | 1886 | |
b3a5a838 | 1887 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; rad_length = 44.86; // prepreg |
1888 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1889 | InsertLayer(ppl); |
1890 | ||
b3a5a838 | 1891 | dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; rad_length = 41.28; // Nomex |
5443e65e | 1892 | steps = 5; dx = (xout - xin)/steps; |
1893 | for(Int_t i=0; i<steps; i++) { | |
1894 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1895 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1896 | InsertLayer(ppl); |
1897 | } | |
1898 | ||
b3a5a838 | 1899 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; rad_length = 44.86; // prepreg |
1900 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1901 | InsertLayer(ppl); |
1902 | ||
b3a5a838 | 1903 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; rad_length = 44.77; // Tedlar |
1904 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1905 | InsertLayer(ppl); |
0a29d0f1 | 1906 | |
5443e65e | 1907 | |
1908 | // set time bins in CO2 | |
1909 | ||
1910 | xin = xout; xout = 275.0; | |
1911 | steps = 50; dx = (xout - xin)/steps; | |
b3a5a838 | 1912 | rho = 1.977e-3; rad_length = 36.2; |
5443e65e | 1913 | |
1914 | for(Int_t i=0; i<steps; i++) { | |
1915 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1916 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1917 | InsertLayer(ppl); |
1918 | } | |
1919 | ||
1920 | // set time bins in the outer containment vessel | |
1921 | ||
b3a5a838 | 1922 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; rad_length = 24.01; // Al |
1923 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1924 | InsertLayer(ppl); |
1925 | ||
b3a5a838 | 1926 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; rad_length = 44.77; // Tedlar |
1927 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1928 | InsertLayer(ppl); |
1929 | ||
b3a5a838 | 1930 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; rad_length = 44.86; // prepreg |
1931 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1932 | InsertLayer(ppl); |
1933 | ||
b3a5a838 | 1934 | dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; rad_length = 41.28; // Nomex |
5443e65e | 1935 | steps = 10; dx = (xout - xin)/steps; |
1936 | for(Int_t i=0; i<steps; i++) { | |
1937 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1938 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1939 | InsertLayer(ppl); |
1940 | } | |
1941 | ||
b3a5a838 | 1942 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; rad_length = 44.86; // prepreg |
1943 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1944 | InsertLayer(ppl); |
1945 | ||
b3a5a838 | 1946 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; rad_length = 44.77; // Tedlar |
1947 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1948 | InsertLayer(ppl); |
1949 | ||
b3a5a838 | 1950 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; rad_length = 24.01; // Al |
1951 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 1952 | InsertLayer(ppl); |
1953 | ||
1954 | Double_t xtrd = (Double_t) fGeom->Rmin(); | |
1955 | ||
1956 | // add layers between TPC and TRD (Air temporarily) | |
1957 | xin = xout; xout = xtrd; | |
1958 | steps = 50; dx = (xout - xin)/steps; | |
b3a5a838 | 1959 | rho = 1.2e-3; rad_length = 36.66; |
5443e65e | 1960 | |
1961 | for(Int_t i=0; i<steps; i++) { | |
1962 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1963 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1964 | InsertLayer(ppl); |
1965 | } | |
1966 | ||
1967 | ||
1968 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
1969 | ||
1970 | // add layers for each of the planes | |
1971 | ||
1972 | Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell | |
1973 | Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes | |
1974 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
1975 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
1976 | Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator | |
1977 | Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; | |
1978 | Double_t dxPlane = dxTEC + dxSpace; | |
1979 | ||
5443e65e | 1980 | Int_t tb, tb_index; |
1981 | const Int_t nChambers = AliTRDgeometry::Ncham(); | |
ca6c93d6 | 1982 | Double_t Ymax = 0, holeYmax = 0; |
1983 | Double_t * Zc = new Double_t[nChambers]; | |
1984 | Double_t * Zmax = new Double_t[nChambers]; | |
5443e65e | 1985 | Double_t holeZmax = 1000.; // the whole sector is missing |
1986 | ||
5443e65e | 1987 | for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
1988 | ||
1989 | // Radiator | |
1990 | xin = xtrd + plane * dxPlane; xout = xin + dxRad; | |
b3a5a838 | 1991 | steps = 12; dx = (xout - xin)/steps; rho = 0.074; rad_length = 40.6; |
5443e65e | 1992 | for(Int_t i=0; i<steps; i++) { |
1993 | x = xin + i*dx + dx/2; | |
b3a5a838 | 1994 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 1995 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 1996 | holeYmax = x*TMath::Tan(0.5*alpha); |
1997 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 1998 | } |
1999 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2000 | holeYmax = x*TMath::Tan(0.5*alpha); |
2001 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2002 | } |
2003 | InsertLayer(ppl); | |
2004 | } | |
2005 | ||
2006 | Ymax = fGeom->GetChamberWidth(plane)/2; | |
2007 | for(Int_t ch = 0; ch < nChambers; ch++) { | |
2008 | Zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; | |
2009 | Float_t pad = fPar->GetRowPadSize(plane,ch,0); | |
2010 | Float_t row0 = fPar->GetRow0(plane,ch,0); | |
2011 | Int_t nPads = fPar->GetRowMax(plane,ch,0); | |
2012 | Zc[ch] = (pad * nPads)/2 + row0 - pad/2; | |
2013 | } | |
2014 | ||
2015 | dx = fPar->GetTimeBinSize(); | |
b3a5a838 | 2016 | rho = 0.00295 * 0.85; rad_length = 11.0; |
5443e65e | 2017 | |
2018 | Double_t x0 = (Double_t) fPar->GetTime0(plane); | |
2019 | Double_t xbottom = x0 - dxDrift; | |
2020 | Double_t xtop = x0 + dxAmp; | |
2021 | ||
2022 | // Amplification region | |
2023 | ||
2024 | steps = (Int_t) (dxAmp/dx); | |
2025 | ||
2026 | for(tb = 0; tb < steps; tb++) { | |
2027 | x = x0 + tb * dx + dx/2; | |
2028 | tb_index = CookTimeBinIndex(plane, -tb-1); | |
b3a5a838 | 2029 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,tb_index); |
5443e65e | 2030 | ppl->SetYmax(Ymax); |
2031 | for(Int_t ch = 0; ch < nChambers; ch++) { | |
a9814c09 | 2032 | ppl->SetZmax(ch, Zc[ch], Zmax[ch]); |
5443e65e | 2033 | } |
2034 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
a9814c09 | 2035 | holeYmax = x*TMath::Tan(0.5*alpha); |
2036 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2037 | } |
2038 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2039 | holeYmax = x*TMath::Tan(0.5*alpha); |
2040 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2041 | } |
2042 | InsertLayer(ppl); | |
2043 | } | |
2044 | tb_index = CookTimeBinIndex(plane, -steps); | |
2045 | x = (x + dx/2 + xtop)/2; | |
2046 | dx = 2*(xtop-x); | |
b3a5a838 | 2047 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,tb_index); |
5443e65e | 2048 | ppl->SetYmax(Ymax); |
2049 | for(Int_t ch = 0; ch < nChambers; ch++) { | |
2050 | ppl->SetZmax(ch, Zc[ch], Zmax[ch]); | |
2051 | } | |
2052 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
2053 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2054 | ppl->SetHole(holeYmax, holeZmax); | |
2055 | } | |
2056 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2057 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2058 | ppl->SetHole(holeYmax, holeZmax); | |
2059 | } | |
2060 | InsertLayer(ppl); | |
2061 | ||
2062 | // Drift region | |
2063 | dx = fPar->GetTimeBinSize(); | |
2064 | steps = (Int_t) (dxDrift/dx); | |
2065 | ||
2066 | for(tb = 0; tb < steps; tb++) { | |
2067 | x = x0 - tb * dx - dx/2; | |
2068 | tb_index = CookTimeBinIndex(plane, tb); | |
2069 | ||
b3a5a838 | 2070 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,tb_index); |
5443e65e | 2071 | ppl->SetYmax(Ymax); |
2072 | for(Int_t ch = 0; ch < nChambers; ch++) { | |
a9814c09 | 2073 | ppl->SetZmax(ch, Zc[ch], Zmax[ch]); |
5443e65e | 2074 | } |
2075 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
a9814c09 | 2076 | holeYmax = x*TMath::Tan(0.5*alpha); |
2077 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2078 | } |
2079 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2080 | holeYmax = x*TMath::Tan(0.5*alpha); |
2081 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2082 | } |
2083 | InsertLayer(ppl); | |
2084 | } | |
2085 | tb_index = CookTimeBinIndex(plane, steps); | |
2086 | x = (x - dx/2 + xbottom)/2; | |
2087 | dx = 2*(x-xbottom); | |
b3a5a838 | 2088 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,tb_index); |
5443e65e | 2089 | ppl->SetYmax(Ymax); |
2090 | for(Int_t ch = 0; ch < nChambers; ch++) { | |
2091 | ppl->SetZmax(ch, Zc[ch], Zmax[ch]); | |
2092 | } | |
2093 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { | |
2094 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2095 | ppl->SetHole(holeYmax, holeZmax); | |
2096 | } | |
2097 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2098 | holeYmax = x*TMath::Tan(0.5*alpha); | |
2099 | ppl->SetHole(holeYmax, holeZmax); | |
2100 | } | |
2101 | InsertLayer(ppl); | |
2102 | ||
2103 | // Pad Plane | |
b3a5a838 | 2104 | xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; rad_length = 33.0; |
2105 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,rad_length,-1); | |
5443e65e | 2106 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
2107 | holeYmax = (xin+dx/2)*TMath::Tan(0.5*alpha); | |
2108 | ppl->SetHole(holeYmax, holeZmax); | |
2109 | } | |
2110 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
2111 | holeYmax = (xin+dx/2)*TMath::Tan(0.5*alpha); | |
2112 | ppl->SetHole(holeYmax, holeZmax); | |
2113 | } | |
2114 | InsertLayer(ppl); | |
2115 | ||
2116 | // Rohacell | |
2117 | xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; | |
b3a5a838 | 2118 | steps = 5; dx = (xout - xin)/steps; rho = 0.074; rad_length = 40.6; |
5443e65e | 2119 | for(Int_t i=0; i<steps; i++) { |
2120 | x = xin + i*dx + dx/2; | |
b3a5a838 | 2121 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 2122 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 2123 | holeYmax = x*TMath::Tan(0.5*alpha); |
2124 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2125 | } |
2126 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2127 | holeYmax = x*TMath::Tan(0.5*alpha); |
2128 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2129 | } |
2130 | InsertLayer(ppl); | |
2131 | } | |
2132 | ||
2133 | // Space between the chambers, air | |
2134 | xin = xout; xout = xtrd + (plane + 1) * dxPlane; | |
b3a5a838 | 2135 | steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; rad_length = 36.66; |
5443e65e | 2136 | for(Int_t i=0; i<steps; i++) { |
2137 | x = xin + i*dx + dx/2; | |
b3a5a838 | 2138 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 2139 | if((fGeom->GetPHOShole()) && (fGeomSector >= 2) && (fGeomSector <= 6)) { |
a9814c09 | 2140 | holeYmax = x*TMath::Tan(0.5*alpha); |
2141 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2142 | } |
2143 | if((fGeom->GetRICHhole()) && (fGeomSector >= 12) && (fGeomSector <= 14)) { | |
a9814c09 | 2144 | holeYmax = x*TMath::Tan(0.5*alpha); |
2145 | ppl->SetHole(holeYmax, holeZmax); | |
5443e65e | 2146 | } |
2147 | InsertLayer(ppl); | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | // Space between the TRD and RICH | |
2152 | Double_t xRICH = 500.; | |
2153 | xin = xout; xout = xRICH; | |
b3a5a838 | 2154 | steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; rad_length = 36.66; |
5443e65e | 2155 | for(Int_t i=0; i<steps; i++) { |
2156 | x = xin + i*dx + dx/2; | |
b3a5a838 | 2157 | ppl = new AliTRDpropagationLayer(x,dx,rho,rad_length,-1); |
5443e65e | 2158 | InsertLayer(ppl); |
2159 | } | |
2160 | ||
2161 | MapTimeBinLayers(); | |
ca6c93d6 | 2162 | delete [] Zc; |
2163 | delete [] Zmax; | |
5443e65e | 2164 | |
2165 | } | |
2166 | ||
2167 | //______________________________________________________ | |
2168 | ||
2169 | Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t local_tb) const | |
2170 | { | |
2171 | // | |
2172 | // depending on the digitization parameters calculates "global" | |
2173 | // time bin index for timebin <local_tb> in plane <plane> | |
2174 | // | |
2175 | ||
2176 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2177 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2178 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); | |
2179 | ||
2180 | Int_t tbAmp = fPar->GetTimeBefore(); | |
2181 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 2182 | if(kTRUE) maxAmp = 0; // intentional until we change parameter class |
5443e65e | 2183 | Int_t tbDrift = fPar->GetTimeMax(); |
2184 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
2185 | ||
2186 | Int_t tb_per_plane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); | |
2187 | ||
b3a5a838 | 2188 | Int_t gtb = (plane+1) * tb_per_plane - local_tb - 1 - TMath::Min(tbAmp,maxAmp); |
5443e65e | 2189 | |
2190 | if((local_tb < 0) && | |
2191 | (TMath::Abs(local_tb) > TMath::Min(tbAmp,maxAmp))) return -1; | |
2192 | if(local_tb >= TMath::Min(tbDrift,maxDrift)) return -1; | |
2193 | ||
2194 | return gtb; | |
2195 | ||
2196 | ||
2197 | } | |
2198 | ||
2199 | //______________________________________________________ | |
2200 | ||
2201 | void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() | |
2202 | { | |
2203 | // | |
2204 | // For all sensitive time bins sets corresponding layer index | |
2205 | // in the array fTimeBins | |
2206 | // | |
2207 | ||
2208 | Int_t index; | |
2209 | ||
2210 | for(Int_t i = 0; i < fN; i++) { | |
2211 | index = fLayers[i]->GetTimeBinIndex(); | |
2212 | ||
2213 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); | |
2214 | ||
2215 | if(index < 0) continue; | |
2216 | if(index >= (Int_t) kMAX_TIME_BIN_INDEX) { | |
2217 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); | |
2218 | printf(" index %d exceeds allowed maximum of %d!\n", | |
a9814c09 | 2219 | index, kMAX_TIME_BIN_INDEX-1); |
5443e65e | 2220 | continue; |
2221 | } | |
2222 | fTimeBinIndex[index] = i; | |
2223 | } | |
2224 | ||
2225 | Double_t x1, dx1, x2, dx2, gap; | |
2226 | ||
2227 | for(Int_t i = 0; i < fN-1; i++) { | |
2228 | x1 = fLayers[i]->GetX(); | |
2229 | dx1 = fLayers[i]->GetdX(); | |
2230 | x2 = fLayers[i+1]->GetX(); | |
2231 | dx2 = fLayers[i+1]->GetdX(); | |
2232 | gap = (x2 - dx2/2) - (x1 + dx1/2); | |
2233 | if(gap < -0.01) { | |
2234 | printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); | |
2235 | printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); | |
2236 | } | |
2237 | if(gap > 0.01) { | |
2238 | printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); | |
2239 | printf(" (%f - %f) - (%f + %f) = %f\n", | |
a9814c09 | 2240 | x2, dx2/2, x1, dx1, gap); |
5443e65e | 2241 | } |
2242 | } | |
2243 | } | |
2244 | ||
2245 | ||
2246 | //______________________________________________________ | |
2247 | ||
2248 | ||
2249 | Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const | |
2250 | { | |
2251 | // | |
2252 | // Returns the number of time bin which in radial position is closest to <x> | |
2253 | // | |
2254 | ||
2255 | if(x >= fLayers[fN-1]->GetX()) return fN-1; | |
2256 | if(x <= fLayers[0]->GetX()) return 0; | |
2257 | ||
2258 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2259 | for (; b<e; m=(b+e)/2) { | |
2260 | if (x > fLayers[m]->GetX()) b=m+1; | |
2261 | else e=m; | |
2262 | } | |
2263 | if(TMath::Abs(x - fLayers[m]->GetX()) > | |
2264 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; | |
2265 | else return m; | |
2266 | ||
2267 | } | |
2268 | ||
2269 | //______________________________________________________ | |
2270 | ||
2271 | Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const | |
2272 | { | |
2273 | // | |
2274 | // Returns number of the innermost SENSITIVE propagation layer | |
2275 | // | |
2276 | ||
2277 | return GetLayerNumber(0); | |
2278 | } | |
2279 | ||
2280 | //______________________________________________________ | |
2281 | ||
2282 | Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const | |
2283 | { | |
2284 | // | |
2285 | // Returns number of the outermost SENSITIVE time bin | |
2286 | // | |
2287 | ||
2288 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2289 | } |
2290 | ||
5443e65e | 2291 | //______________________________________________________ |
2292 | ||
2293 | Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const | |
2294 | { | |
2295 | // | |
2296 | // Returns number of SENSITIVE time bins | |
2297 | // | |
2298 | ||
2299 | Int_t tb, layer; | |
2300 | for(tb = kMAX_TIME_BIN_INDEX-1; tb >=0; tb--) { | |
2301 | layer = GetLayerNumber(tb); | |
2302 | if(layer>=0) break; | |
2303 | } | |
2304 | return tb+1; | |
2305 | } | |
2306 | ||
2307 | //______________________________________________________ | |
2308 | ||
2309 | void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) | |
2310 | { | |
2311 | // | |
2312 | // Insert layer <pl> in fLayers array. | |
2313 | // Layers are sorted according to X coordinate. | |
2314 | ||
2315 | if ( fN == ((Int_t) kMAX_LAYERS_PER_SECTOR)) { | |
2316 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); | |
2317 | return; | |
2318 | } | |
2319 | if (fN==0) {fLayers[fN++] = pl; return;} | |
2320 | Int_t i=Find(pl->GetX()); | |
2321 | ||
2322 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
2323 | fLayers[i]=pl; fN++; | |
2324 | ||
2325 | } | |
2326 | ||
2327 | //______________________________________________________ | |
2328 | ||
2329 | Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const | |
2330 | { | |
2331 | // | |
2332 | // Returns index of the propagation layer nearest to X | |
2333 | // | |
2334 | ||
2335 | if (x <= fLayers[0]->GetX()) return 0; | |
2336 | if (x > fLayers[fN-1]->GetX()) return fN; | |
2337 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2338 | for (; b<e; m=(b+e)/2) { | |
2339 | if (x > fLayers[m]->GetX()) b=m+1; | |
2340 | else e=m; | |
2341 | } | |
2342 | return m; | |
2343 | } | |
2344 | ||
2345 | //______________________________________________________ | |
2346 | ||
2347 | void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( | |
b3a5a838 | 2348 | Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &rad_length, |
a9814c09 | 2349 | Bool_t &lookForCluster) const |
5443e65e | 2350 | { |
2351 | // | |
b3a5a838 | 2352 | // Returns radial step <dx>, density <rho>, rad. length <rad_length>, |
5443e65e | 2353 | // and sensitivity <lookForCluster> in point <y,z> |
2354 | // | |
2355 | ||
2356 | dx = fdX; | |
2357 | rho = fRho; | |
b3a5a838 | 2358 | rad_length = fX0; |
5443e65e | 2359 | lookForCluster = kFALSE; |
2360 | ||
2361 | // check dead regions | |
2362 | if(fTimeBinIndex >= 0) { | |
2363 | for(Int_t ch = 0; ch < (Int_t) kZONES; ch++) { | |
2364 | if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) | |
a9814c09 | 2365 | lookForCluster = kTRUE; |
2366 | // else { rho = 1.7; rad_length = 33.0; } // G10 | |
5443e65e | 2367 | } |
2368 | if(TMath::Abs(y) > fYmax) lookForCluster = kFALSE; | |
2369 | if(!lookForCluster) { | |
b3a5a838 | 2370 | // rho = 1.7; rad_length = 33.0; // G10 |
5443e65e | 2371 | } |
2372 | } | |
2373 | ||
2374 | // check hole | |
2375 | if(fHole && (TMath::Abs(y - fHoleYc) < fHoleYmax) && | |
2376 | (TMath::Abs(z - fHoleZc) < fHoleZmax)) { | |
2377 | lookForCluster = kFALSE; | |
2378 | rho = fHoleRho; | |
b3a5a838 | 2379 | rad_length = fHoleX0; |
5443e65e | 2380 | } |
2381 | ||
2382 | return; | |
2383 | } | |
2384 | ||
2385 | //______________________________________________________ | |
2386 | ||
2387 | void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, | |
a9814c09 | 2388 | UInt_t index) { |
5443e65e | 2389 | |
2390 | // Insert cluster in cluster array. | |
2391 | // Clusters are sorted according to Y coordinate. | |
2392 | ||
2393 | if(fTimeBinIndex < 0) { | |
2394 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); | |
2395 | return; | |
2396 | } | |
2397 | ||
2398 | if (fN== (Int_t) kMAX_CLUSTER_PER_TIME_BIN) { | |
2399 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); | |
2400 | return; | |
2401 | } | |
2402 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} | |
2403 | Int_t i=Find(c->GetY()); | |
2404 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); | |
2405 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); | |
2406 | fIndex[i]=index; fClusters[i]=c; fN++; | |
2407 | } | |
2408 | ||
2409 | //______________________________________________________ | |
2410 | ||
2411 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { | |
2412 | ||
2413 | // Returns index of the cluster nearest in Y | |
2414 | ||
2415 | if (y <= fClusters[0]->GetY()) return 0; | |
2416 | if (y > fClusters[fN-1]->GetY()) return fN; | |
2417 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2418 | for (; b<e; m=(b+e)/2) { | |
2419 | if (y > fClusters[m]->GetY()) b=m+1; | |
2420 | else e=m; | |
2421 | } | |
2422 | return m; | |
2423 | } | |
2424 | ||
fd621f36 | 2425 | //--------------------------------------------------------- |
5443e65e | 2426 | |
fd621f36 | 2427 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { |
2428 | // | |
2429 | // Returns correction factor for tilted pads geometry | |
2430 | // | |
5443e65e | 2431 | |
fd621f36 | 2432 | Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); |
2433 | Int_t det = c->GetDetector(); | |
2434 | Int_t plane = fGeom->GetPlane(det); | |
b3a5a838 | 2435 | |
2436 | if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; | |
b8dc2353 | 2437 | |
2438 | if(fNoTilt) h01 = 0; | |
fd621f36 | 2439 | |
2440 | return h01; | |
2441 | } | |
5443e65e | 2442 |