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1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
3 | * * |
4 | * Author: The ALICE Off-line Project. * |
5 | * Contributors are mentioned in the code where appropriate. * |
6 | * * |
7 | * Permission to use, copy, modify and distribute this software and its * |
8 | * documentation strictly for non-commercial purposes is hereby granted * |
9 | * without fee, provided that the above copyright notice appears in all * |
10 | * copies and that both the copyright notice and this permission notice * |
11 | * appear in the supporting documentation. The authors make no claims * |
12 | * about the suitability of this software for any purpose. It is * |
13 | * provided "as is" without express or implied warranty. * |
14 | **************************************************************************/ |
15 | |
0fa7dfa7 |
16 | /* $Id$ */ |
bbf92647 |
17 | |
029cd327 |
18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // |
20 | // The standard TRD tracker // |
21 | // // |
22 | /////////////////////////////////////////////////////////////////////////////// |
23 | |
a2cb5b3d |
24 | #include <Riostream.h> |
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25 | #include <TFile.h> |
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26 | #include <TBranch.h> |
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27 | #include <TTree.h> |
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28 | #include <TObjArray.h> |
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29 | |
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30 | #include "AliTRDgeometry.h" |
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31 | #include "AliTRDparameter.h" |
3c625a9b |
32 | #include "AliTRDgeometryHole.h" |
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33 | #include "AliTRDcluster.h" |
34 | #include "AliTRDtrack.h" |
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35 | #include "AliBarrelTrack.h" |
36 | #include "AliESD.h" |
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37 | |
38 | #include "AliTRDtracker.h" |
39 | |
40 | ClassImp(AliTRDtracker) |
41 | |
029cd327 |
42 | const Float_t AliTRDtracker::fgkSeedDepth = 0.5; |
43 | const Float_t AliTRDtracker::fgkSeedStep = 0.10; |
44 | const Float_t AliTRDtracker::fgkSeedGap = 0.25; |
5443e65e |
45 | |
029cd327 |
46 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; |
47 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; |
48 | const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; |
49 | const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; |
50 | const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; |
a819a5f7 |
51 | |
029cd327 |
52 | const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; |
53 | const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; |
54 | const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; |
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55 | |
029cd327 |
56 | const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; |
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57 | |
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58 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
59 | const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; |
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60 | |
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61 | const Float_t AliTRDtracker::fgkSkipDepth = 0.3; |
62 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; |
63 | const Float_t AliTRDtracker::fgkWideRoad = 20.; |
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64 | |
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65 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
a819a5f7 |
66 | |
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67 | const Int_t AliTRDtracker::fgkFirstPlane = 5; |
68 | const Int_t AliTRDtracker::fgkLastPlane = 17; |
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69 | |
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70 | |
89f05372 |
71 | //____________________________________________________________________ |
72 | AliTRDtracker::AliTRDtracker():AliTracker(), |
73 | fGeom(0), |
74 | fPar(0), |
75 | fNclusters(0), |
76 | fClusters(0), |
77 | fNseeds(0), |
78 | fSeeds(0), |
79 | fNtracks(0), |
80 | fTracks(0), |
81 | fSY2corr(0), |
82 | fSZ2corr(0), |
83 | fTimeBinsPerPlane(0), |
84 | fMaxGap(0), |
85 | fVocal(kFALSE), |
86 | fAddTRDseeds(kFALSE), |
87 | fNoTilt(kFALSE) |
88 | { |
b7a0917f |
89 | // Default constructor |
90 | |
89f05372 |
91 | for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0; |
92 | for(Int_t j=0;j<5;j++) |
93 | for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE; |
94 | } |
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95 | //____________________________________________________________________ |
c630aafd |
96 | AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker() |
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97 | { |
5443e65e |
98 | // |
99 | // Main constructor |
100 | // |
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101 | |
c630aafd |
102 | //Float_t fTzero = 0; |
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103 | |
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104 | fAddTRDseeds = kFALSE; |
5443e65e |
105 | fGeom = NULL; |
b8dc2353 |
106 | fNoTilt = kFALSE; |
5443e65e |
107 | |
108 | TDirectory *savedir=gDirectory; |
109 | TFile *in=(TFile*)geomfile; |
110 | if (!in->IsOpen()) { |
111 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); |
112 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); |
113 | } |
114 | else { |
115 | in->cd(); |
c630aafd |
116 | // in->ls(); |
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117 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
118 | fPar = (AliTRDparameter*) in->Get("TRDparameter"); |
c630aafd |
119 | // fGeom->Dump(); |
5443e65e |
120 | } |
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121 | |
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122 | if(fGeom) { |
123 | // fTzero = geo->GetT0(); |
b8dc2353 |
124 | printf("Found geometry version %d on file \n", fGeom->IsVersion()); |
5443e65e |
125 | } |
126 | else { |
c630aafd |
127 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); |
3c625a9b |
128 | //printf("The DETAIL TRD geometry will be used\n"); |
129 | //fGeom = new AliTRDgeometryDetail(); |
130 | fGeom = new AliTRDgeometryHole(); |
131 | fGeom->SetPHOShole(); |
132 | fGeom->SetRICHhole(); |
c630aafd |
133 | } |
134 | |
135 | if (!fPar) { |
136 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); |
137 | printf("The DEFAULT TRD parameter will be used\n"); |
5443e65e |
138 | fPar = new AliTRDparameter(); |
139 | } |
c630aafd |
140 | fPar->ReInit(); |
5443e65e |
141 | |
142 | savedir->cd(); |
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143 | |
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144 | |
145 | // fGeom->SetT0(fTzero); |
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146 | |
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147 | fNclusters = 0; |
148 | fClusters = new TObjArray(2000); |
149 | fNseeds = 0; |
5443e65e |
150 | fSeeds = new TObjArray(2000); |
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151 | fNtracks = 0; |
5443e65e |
152 | fTracks = new TObjArray(1000); |
a819a5f7 |
153 | |
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154 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
155 | Int_t trS = CookSectorIndex(geomS); |
156 | fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); |
3c625a9b |
157 | for (Int_t icham=0;icham<AliTRDgeometry::kNcham; icham++){ |
158 | fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS); |
159 | } |
5443e65e |
160 | } |
a819a5f7 |
161 | |
029cd327 |
162 | Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); |
163 | if(tiltAngle < 0.1) { |
b8dc2353 |
164 | fNoTilt = kTRUE; |
165 | } |
166 | |
167 | fSY2corr = 0.2; |
168 | fSZ2corr = 120.; |
169 | |
029cd327 |
170 | if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; |
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171 | |
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172 | |
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173 | // calculate max gap on track |
a819a5f7 |
174 | |
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175 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
176 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
a819a5f7 |
177 | |
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178 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); |
179 | Int_t tbAmp = fPar->GetTimeBefore(); |
180 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); |
b3a5a838 |
181 | if(kTRUE) maxAmp = 0; // intentional until we change the parameter class |
5443e65e |
182 | Int_t tbDrift = fPar->GetTimeMax(); |
183 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); |
a819a5f7 |
184 | |
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185 | tbDrift = TMath::Min(tbDrift,maxDrift); |
186 | tbAmp = TMath::Min(tbAmp,maxAmp); |
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187 | |
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188 | fTimeBinsPerPlane = tbAmp + tbDrift; |
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189 | fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); |
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190 | |
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191 | fVocal = kFALSE; |
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192 | |
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193 | |
194 | // Barrel Tracks [SR, 03.04.2003] |
195 | |
196 | fBarrelFile = 0; |
197 | fBarrelTree = 0; |
198 | fBarrelArray = 0; |
199 | fBarrelTrack = 0; |
200 | |
201 | savedir->cd(); |
5443e65e |
202 | } |
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203 | |
5443e65e |
204 | //___________________________________________________________________ |
205 | AliTRDtracker::~AliTRDtracker() |
46d29e70 |
206 | { |
029cd327 |
207 | // |
208 | // Destructor of AliTRDtracker |
209 | // |
210 | |
89f05372 |
211 | if (fClusters) { |
212 | fClusters->Delete(); |
213 | delete fClusters; |
214 | } |
215 | if (fTracks) { |
216 | fTracks->Delete(); |
217 | delete fTracks; |
218 | } |
219 | if (fSeeds) { |
220 | fSeeds->Delete(); |
221 | delete fSeeds; |
222 | } |
5443e65e |
223 | delete fGeom; |
224 | delete fPar; |
0a29d0f1 |
225 | |
029cd327 |
226 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
227 | delete fTrSec[geomS]; |
5443e65e |
228 | } |
229 | } |
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230 | |
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231 | //_____________________________________________________________________ |
232 | |
233 | void AliTRDtracker::SetBarrelTree(const char *mode) { |
234 | // |
235 | // |
236 | // |
237 | |
238 | if (!IsStoringBarrel()) return; |
239 | |
240 | TDirectory *sav = gDirectory; |
241 | if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE"); |
242 | |
243 | char buff[40]; |
244 | sprintf(buff, "BarrelTRD_%d_%s", GetEventNumber(), mode); |
245 | |
246 | fBarrelFile->cd(); |
247 | fBarrelTree = new TTree(buff, "Barrel TPC tracks"); |
248 | |
029cd327 |
249 | Int_t nRefs = fgkLastPlane - fgkFirstPlane + 1; |
9c9d2487 |
250 | |
251 | if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", nRefs); |
252 | for(Int_t i=0; i<nRefs; i++) new((*fBarrelArray)[i]) AliBarrelTrack(); |
253 | |
254 | fBarrelTree->Branch("tracks", &fBarrelArray); |
255 | sav->cd(); |
256 | } |
257 | |
258 | //_____________________________________________________________________ |
259 | |
260 | void AliTRDtracker::StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn) { |
261 | // |
262 | // |
263 | // |
264 | |
265 | if (!IsStoringBarrel()) return; |
266 | |
267 | static Int_t nClusters; |
268 | static Int_t nWrong; |
269 | static Double_t chi2; |
270 | static Int_t index; |
271 | static Bool_t wasLast = kTRUE; |
272 | |
273 | Int_t newClusters, newWrong; |
274 | Double_t newChi2; |
275 | |
276 | if (wasLast) { |
277 | |
278 | fBarrelArray->Clear(); |
279 | nClusters = nWrong = 0; |
280 | chi2 = 0.0; |
281 | index = 0; |
282 | wasLast = kFALSE; |
283 | } |
284 | |
285 | fBarrelTrack = (AliBarrelTrack*)(*fBarrelArray)[index++]; |
286 | ps->GetBarrelTrack(fBarrelTrack); |
287 | |
288 | newClusters = ps->GetNumberOfClusters() - nClusters; |
289 | newWrong = ps->GetNWrong() - nWrong; |
290 | newChi2 = ps->GetChi2() - chi2; |
291 | |
292 | nClusters = ps->GetNumberOfClusters(); |
293 | nWrong = ps->GetNWrong(); |
294 | chi2 = ps->GetChi2(); |
295 | |
029cd327 |
296 | if (refPlane != fgkLastPlane) { |
9c9d2487 |
297 | fBarrelTrack->SetNClusters(newClusters, newChi2); |
298 | fBarrelTrack->SetNWrongClusters(newWrong); |
299 | } else { |
300 | wasLast = kTRUE; |
301 | } |
302 | |
303 | fBarrelTrack->SetRefPlane(refPlane, isIn); |
304 | } |
305 | |
306 | //_____________________________________________________________________ |
307 | |
308 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { |
309 | // |
310 | // Rotates the track when necessary |
311 | // |
312 | |
313 | Double_t alpha = AliTRDgeometry::GetAlpha(); |
314 | Double_t y = track->GetY(); |
315 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); |
316 | |
c630aafd |
317 | //Int_t ns = AliTRDgeometry::kNsect; |
9c9d2487 |
318 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; |
319 | |
320 | if (y > ymax) { |
321 | //s = (s+1) % ns; |
322 | if (!track->Rotate(alpha)) return kFALSE; |
323 | } else if (y <-ymax) { |
324 | //s = (s-1+ns) % ns; |
325 | if (!track->Rotate(-alpha)) return kFALSE; |
326 | } |
327 | |
328 | return kTRUE; |
329 | } |
330 | |
46d29e70 |
331 | //_____________________________________________________________________ |
5443e65e |
332 | inline Double_t f1trd(Double_t x1,Double_t y1, |
a9814c09 |
333 | Double_t x2,Double_t y2, |
334 | Double_t x3,Double_t y3) |
46d29e70 |
335 | { |
0a29d0f1 |
336 | // |
46d29e70 |
337 | // Initial approximation of the track curvature |
0a29d0f1 |
338 | // |
46d29e70 |
339 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
340 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- |
341 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); |
342 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- |
343 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); |
344 | |
345 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); |
346 | |
347 | return -xr*yr/sqrt(xr*xr+yr*yr); |
348 | } |
349 | |
350 | //_____________________________________________________________________ |
5443e65e |
351 | inline Double_t f2trd(Double_t x1,Double_t y1, |
a9814c09 |
352 | Double_t x2,Double_t y2, |
353 | Double_t x3,Double_t y3) |
46d29e70 |
354 | { |
0a29d0f1 |
355 | // |
5443e65e |
356 | // Initial approximation of the track curvature times X coordinate |
357 | // of the center of curvature |
0a29d0f1 |
358 | // |
46d29e70 |
359 | |
360 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
361 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- |
362 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); |
363 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- |
364 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); |
365 | |
366 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); |
367 | |
368 | return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); |
369 | } |
370 | |
371 | //_____________________________________________________________________ |
5443e65e |
372 | inline Double_t f3trd(Double_t x1,Double_t y1, |
a9814c09 |
373 | Double_t x2,Double_t y2, |
374 | Double_t z1,Double_t z2) |
46d29e70 |
375 | { |
0a29d0f1 |
376 | // |
46d29e70 |
377 | // Initial approximation of the tangent of the track dip angle |
0a29d0f1 |
378 | // |
46d29e70 |
379 | |
380 | return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); |
381 | } |
382 | |
46e2d86c |
383 | |
384 | AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ |
385 | // |
386 | //try to find cluster in the backup list |
387 | // |
388 | AliTRDcluster * cl =0; |
389 | UInt_t *indexes = track->GetBackupIndexes(); |
390 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ |
391 | if (indexes[i]==0) break; |
392 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); |
393 | if (!cli) break; |
394 | if (cli->GetLocalTimeBin()!=timebin) continue; |
395 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
396 | if (iplane==plane) { |
397 | cl = cli; |
398 | break; |
399 | } |
400 | } |
401 | return cl; |
402 | } |
403 | |
3c625a9b |
404 | |
405 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track){ |
406 | // |
407 | //return last updated plane |
408 | Int_t lastplane=0; |
409 | UInt_t *indexes = track->GetBackupIndexes(); |
410 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ |
411 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); |
412 | if (!cli) break; |
413 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); |
414 | if (iplane>lastplane) { |
415 | lastplane = iplane; |
416 | } |
417 | } |
418 | return lastplane; |
419 | } |
c630aafd |
420 | //___________________________________________________________________ |
421 | Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) |
422 | { |
423 | // |
424 | // Finds tracks within the TRD. The ESD event is expected to contain seeds |
425 | // at the outer part of the TRD. The seeds |
426 | // are found within the TRD if fAddTRDseeds is TRUE. |
427 | // The tracks are propagated to the innermost time bin |
428 | // of the TRD and the ESD event is updated |
429 | // |
430 | |
431 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
029cd327 |
432 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
c630aafd |
433 | Int_t nseed = 0; |
434 | Int_t found = 0; |
435 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); |
436 | |
437 | Int_t n = event->GetNumberOfTracks(); |
438 | for (Int_t i=0; i<n; i++) { |
439 | AliESDtrack* seed=event->GetTrack(i); |
440 | ULong_t status=seed->GetStatus(); |
441 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; |
442 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; |
443 | nseed++; |
444 | |
445 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
46e2d86c |
446 | //seed2->ResetCovariance(); |
c630aafd |
447 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
448 | AliTRDtrack &t=*pt; |
449 | FollowProlongation(t, innerTB); |
450 | if (t.GetNumberOfClusters() >= foundMin) { |
451 | UseClusters(&t); |
029cd327 |
452 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd |
453 | // t.CookdEdx(); |
454 | } |
455 | found++; |
456 | // cout<<found<<'\r'; |
457 | |
458 | if(PropagateToTPC(t)) { |
459 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDin); |
460 | } |
461 | delete seed2; |
462 | delete pt; |
463 | } |
464 | |
465 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
466 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; |
467 | |
468 | // after tracks from loaded seeds are found and the corresponding |
469 | // clusters are used, look for additional seeds from TRD |
470 | |
471 | if(fAddTRDseeds) { |
472 | // Find tracks for the seeds in the TRD |
473 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
474 | |
029cd327 |
475 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
476 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); |
477 | Int_t step = (Int_t) (timeBins * fgkSeedStep); |
c630aafd |
478 | |
479 | // make a first turn with tight cut on initial curvature |
480 | for(Int_t turn = 1; turn <= 2; turn++) { |
481 | if(turn == 2) { |
029cd327 |
482 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
483 | step = (Int_t) (timeBins * (3*fgkSeedStep)); |
c630aafd |
484 | } |
485 | for(Int_t i=0; i<nSteps; i++) { |
486 | Int_t outer=timeBins-1-i*step; |
487 | Int_t inner=outer-gap; |
488 | |
489 | nseed=fSeeds->GetEntriesFast(); |
490 | |
491 | MakeSeeds(inner, outer, turn); |
492 | |
493 | nseed=fSeeds->GetEntriesFast(); |
7bed16a7 |
494 | // printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", |
495 | // turn, i, nseed); |
c630aafd |
496 | |
497 | for (Int_t i=0; i<nseed; i++) { |
498 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; |
499 | FollowProlongation(t,innerTB); |
500 | if (t.GetNumberOfClusters() >= foundMin) { |
501 | UseClusters(&t); |
029cd327 |
502 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd |
503 | t.CookdEdx(); |
504 | found++; |
505 | // cout<<found<<'\r'; |
506 | if(PropagateToTPC(t)) { |
507 | AliESDtrack track; |
508 | track.UpdateTrackParams(pt,AliESDtrack::kTRDin); |
509 | event->AddTrack(&track); |
c5a8e3df |
510 | // track.SetTRDtrack(new AliTRDtrack(*pt)); |
c630aafd |
511 | } |
512 | } |
513 | delete fSeeds->RemoveAt(i); |
514 | fNseeds--; |
515 | } |
516 | } |
517 | } |
518 | } |
519 | |
520 | cout<<"Total number of found tracks: "<<found<<endl; |
521 | |
522 | return 0; |
523 | } |
5443e65e |
524 | |
c630aafd |
525 | |
5443e65e |
526 | |
c630aafd |
527 | //_____________________________________________________________________________ |
528 | Int_t AliTRDtracker::PropagateBack(AliESD* event) { |
529 | // |
530 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and |
531 | // backpropagated by the TPC tracker. Each seed is first propagated |
532 | // to the TRD, and then its prolongation is searched in the TRD. |
533 | // If sufficiently long continuation of the track is found in the TRD |
534 | // the track is updated, otherwise it's stored as originaly defined |
535 | // by the TPC tracker. |
536 | // |
537 | |
538 | Int_t found=0; |
c5a8e3df |
539 | Float_t foundMin = 20; |
c630aafd |
540 | |
541 | Int_t n = event->GetNumberOfTracks(); |
542 | for (Int_t i=0; i<n; i++) { |
543 | AliESDtrack* seed=event->GetTrack(i); |
544 | ULong_t status=seed->GetStatus(); |
545 | if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; |
546 | if ( (status & AliESDtrack::kTRDout) != 0 ) continue; |
547 | |
548 | Int_t lbl = seed->GetLabel(); |
549 | AliTRDtrack *track = new AliTRDtrack(*seed); |
550 | track->SetSeedLabel(lbl); |
551 | fNseeds++; |
7bed16a7 |
552 | Float_t p4 = track->GetC(); |
553 | // |
3c625a9b |
554 | Int_t expectedClr = FollowBackProlongation(*track); |
555 | if (track->GetNumberOfClusters()<expectedClr/3){ |
556 | AliTRDtrack *track1 = new AliTRDtrack(*seed); |
557 | track1->SetSeedLabel(lbl); |
558 | FollowBackProlongation(*track1); |
559 | AliTRDtrack *track2= new AliTRDtrack(*seed); |
560 | track->SetSeedLabel(lbl); |
561 | FollowBackProlongation(*track2); |
562 | delete track1; |
563 | delete track2; |
564 | } |
7bed16a7 |
565 | if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)>0.2) { |
566 | delete track; |
567 | continue; //too big change of curvature - to be checked |
568 | } |
c630aafd |
569 | Int_t foundClr = track->GetNumberOfClusters(); |
570 | if (foundClr >= foundMin) { |
571 | if(foundClr >= 2) { |
572 | track->CookdEdx(); |
c5a8e3df |
573 | CookLabel(track, 1-fgkLabelFraction); |
c630aafd |
574 | UseClusters(track); |
575 | } |
576 | |
577 | // Propagate to outer reference plane [SR, GSI, 18.02.2003] |
c5a8e3df |
578 | // track->PropagateTo(364.8); why? |
c630aafd |
579 | |
580 | //seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
581 | //found++; |
c5a8e3df |
582 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); |
c630aafd |
583 | } |
584 | |
1e9bb598 |
585 | //Propagation to the TOF (I.Belikov) |
3c625a9b |
586 | |
587 | if (track->GetStop()==kFALSE){ |
c5a8e3df |
588 | if (track->GetNumberOfClusters()>15) seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
589 | |
b94f0a96 |
590 | Double_t xtof=371.; |
3c625a9b |
591 | Double_t c2=track->GetC()*xtof - track->GetEta(); |
c5a8e3df |
592 | if (TMath::Abs(c2)>=0.85) { |
593 | delete track; |
594 | continue; |
595 | } |
b94f0a96 |
596 | Double_t xTOF0 = 371. ; |
5c0368b8 |
597 | if (!PropagateToOuterPlane(*track,xTOF0)) { |
598 | delete track; |
599 | continue; |
600 | } |
7bed16a7 |
601 | // |
3c625a9b |
602 | Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); |
603 | Double_t y=track->GetYat(xtof); |
604 | if (y > ymax) { |
7ac6fa52 |
605 | if (!track->Rotate(AliTRDgeometry::GetAlpha())) { |
606 | delete track; |
7bed16a7 |
607 | continue; |
7ac6fa52 |
608 | } |
3c625a9b |
609 | } else if (y <-ymax) { |
7ac6fa52 |
610 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { |
611 | delete track; |
7bed16a7 |
612 | continue; |
7ac6fa52 |
613 | } |
3c625a9b |
614 | } |
615 | |
616 | if (track->PropagateTo(xtof)) { |
617 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
c5a8e3df |
618 | seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b |
619 | if (track->GetNumberOfClusters()>foundMin) found++; |
620 | } |
621 | }else{ |
622 | if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ |
623 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
b94f0a96 |
624 | seed->SetStatus(AliESDtrack::kTRDStop); |
c5a8e3df |
625 | seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b |
626 | found++; |
627 | } |
1e9bb598 |
628 | } |
629 | |
d9b8978b |
630 | delete track; |
3c625a9b |
631 | |
1e9bb598 |
632 | //End of propagation to the TOF |
3c625a9b |
633 | //if (foundClr>foundMin) |
634 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
635 | |
c630aafd |
636 | |
637 | } |
638 | |
639 | cerr<<"Number of seeds: "<<fNseeds<<endl; |
640 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; |
641 | |
1e9bb598 |
642 | fSeeds->Clear(); fNseeds=0; |
643 | |
644 | return 0; |
645 | |
646 | } |
647 | |
648 | //_____________________________________________________________________________ |
649 | Int_t AliTRDtracker::RefitInward(AliESD* event) |
650 | { |
651 | // |
652 | // Refits tracks within the TRD. The ESD event is expected to contain seeds |
653 | // at the outer part of the TRD. |
654 | // The tracks are propagated to the innermost time bin |
655 | // of the TRD and the ESD event is updated |
656 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) |
657 | // |
658 | |
659 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); |
660 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
661 | Int_t nseed = 0; |
662 | Int_t found = 0; |
663 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); |
664 | |
665 | Int_t n = event->GetNumberOfTracks(); |
666 | for (Int_t i=0; i<n; i++) { |
667 | AliESDtrack* seed=event->GetTrack(i); |
668 | ULong_t status=seed->GetStatus(); |
669 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; |
46e2d86c |
670 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; |
1e9bb598 |
671 | nseed++; |
672 | |
673 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
3c625a9b |
674 | seed2->ResetCovariance(5.); |
1e9bb598 |
675 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
46e2d86c |
676 | UInt_t * indexes2 = seed2->GetIndexes(); |
677 | UInt_t * indexes3 = pt->GetBackupIndexes(); |
678 | for (Int_t i=0;i<200;i++) { |
679 | if (indexes2[i]==0) break; |
680 | indexes3[i] = indexes2[i]; |
681 | } |
682 | //AliTRDtrack *pt = seed2; |
1e9bb598 |
683 | AliTRDtrack &t=*pt; |
684 | FollowProlongation(t, innerTB); |
7bed16a7 |
685 | /* |
46e2d86c |
686 | if (t.GetNumberOfClusters()<seed->GetTRDclusters(indexes3)*0.5){ |
687 | // debug - why we dont go back? |
688 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
689 | UInt_t * indexes2 = seed2->GetIndexes(); |
690 | UInt_t * indexes3 = pt2->GetBackupIndexes(); |
691 | for (Int_t i=0;i<200;i++) { |
692 | if (indexes2[i]==0) break; |
693 | indexes3[i] = indexes2[i]; |
694 | } |
3c625a9b |
695 | FollowProlongation(*pt2, innerTB); |
696 | delete pt2; |
46e2d86c |
697 | } |
7bed16a7 |
698 | */ |
1e9bb598 |
699 | if (t.GetNumberOfClusters() >= foundMin) { |
46e2d86c |
700 | // UseClusters(&t); |
701 | //CookLabel(pt, 1-fgkLabelFraction); |
1e9bb598 |
702 | // t.CookdEdx(); |
703 | } |
704 | found++; |
705 | // cout<<found<<'\r'; |
706 | |
707 | if(PropagateToTPC(t)) { |
0fa7dfa7 |
708 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit); |
7bed16a7 |
709 | }else{ |
710 | //if not prolongation to TPC - propagate without update |
711 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
712 | seed2->ResetCovariance(5.); |
713 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
714 | delete seed2; |
715 | if (PropagateToTPC(*pt2)) |
716 | seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); |
717 | delete pt2; |
1e9bb598 |
718 | } |
7bed16a7 |
719 | |
1e9bb598 |
720 | delete seed2; |
721 | delete pt; |
722 | } |
723 | |
724 | cout<<"Number of loaded seeds: "<<nseed<<endl; |
725 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; |
726 | |
c630aafd |
727 | return 0; |
728 | |
729 | } |
730 | |
bbf92647 |
731 | |
5443e65e |
732 | //--------------------------------------------------------------------------- |
733 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) |
734 | { |
735 | // Starting from current position on track=t this function tries |
736 | // to extrapolate the track up to timeBin=0 and to confirm prolongation |
737 | // if a close cluster is found. Returns the number of clusters |
738 | // expected to be found in sensitive layers |
bbf92647 |
739 | |
5443e65e |
740 | Float_t wIndex, wTB, wChi2; |
741 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; |
742 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; |
743 | Float_t wPx, wPy, wPz, wC; |
029cd327 |
744 | Double_t px, py, pz; |
5443e65e |
745 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
3c625a9b |
746 | Int_t lastplane = GetLastPlane(&t); |
46d29e70 |
747 | |
5443e65e |
748 | Int_t trackIndex = t.GetLabel(); |
46d29e70 |
749 | |
5443e65e |
750 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
46d29e70 |
751 | |
029cd327 |
752 | Int_t tryAgain=fMaxGap; |
46d29e70 |
753 | |
5443e65e |
754 | Double_t alpha=t.GetAlpha(); |
c630aafd |
755 | alpha = TVector2::Phi_0_2pi(alpha); |
46d29e70 |
756 | |
5443e65e |
757 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
029cd327 |
758 | Double_t radLength, rho, x, dx, y, ymax, z; |
46d29e70 |
759 | |
5443e65e |
760 | Int_t expectedNumberOfClusters = 0; |
761 | Bool_t lookForCluster; |
46d29e70 |
762 | |
5443e65e |
763 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 |
764 | |
5443e65e |
765 | |
766 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { |
767 | |
768 | y = t.GetY(); z = t.GetZ(); |
769 | |
770 | // first propagate to the inner surface of the current time bin |
029cd327 |
771 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e |
772 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 |
773 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
774 | y = t.GetY(); |
775 | ymax = x*TMath::Tan(0.5*alpha); |
776 | if (y > ymax) { |
777 | s = (s+1) % ns; |
778 | if (!t.Rotate(alpha)) break; |
029cd327 |
779 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
780 | } else if (y <-ymax) { |
781 | s = (s-1+ns) % ns; |
782 | if (!t.Rotate(-alpha)) break; |
029cd327 |
783 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
784 | } |
46d29e70 |
785 | |
5443e65e |
786 | y = t.GetY(); z = t.GetZ(); |
787 | |
788 | // now propagate to the middle plane of the next time bin |
029cd327 |
789 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e |
790 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 |
791 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
792 | y = t.GetY(); |
793 | ymax = x*TMath::Tan(0.5*alpha); |
794 | if (y > ymax) { |
795 | s = (s+1) % ns; |
796 | if (!t.Rotate(alpha)) break; |
029cd327 |
797 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
798 | } else if (y <-ymax) { |
799 | s = (s-1+ns) % ns; |
800 | if (!t.Rotate(-alpha)) break; |
029cd327 |
801 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e |
802 | } |
46d29e70 |
803 | |
46d29e70 |
804 | |
5443e65e |
805 | if(lookForCluster) { |
a819a5f7 |
806 | |
5443e65e |
807 | expectedNumberOfClusters++; |
5443e65e |
808 | wIndex = (Float_t) t.GetLabel(); |
809 | wTB = nr; |
46d29e70 |
810 | |
029cd327 |
811 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); |
46d29e70 |
812 | |
5443e65e |
813 | Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); |
5443e65e |
814 | Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); |
46d29e70 |
815 | |
5443e65e |
816 | Double_t road; |
817 | if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); |
818 | else return expectedNumberOfClusters; |
819 | |
820 | wYrt = (Float_t) y; |
821 | wZrt = (Float_t) z; |
822 | wYwindow = (Float_t) road; |
029cd327 |
823 | t.GetPxPyPz(px,py,pz); |
824 | wPx = (Float_t) px; |
825 | wPy = (Float_t) py; |
826 | wPz = (Float_t) pz; |
5443e65e |
827 | wC = (Float_t) t.GetC(); |
828 | wSigmaC2 = (Float_t) t.GetSigmaC2(); |
829 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); |
830 | wSigmaY2 = (Float_t) t.GetSigmaY2(); |
831 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); |
832 | wChi2 = -1; |
833 | |
5443e65e |
834 | |
835 | AliTRDcluster *cl=0; |
836 | UInt_t index=0; |
837 | |
029cd327 |
838 | Double_t maxChi2=fgkMaxChi2; |
5443e65e |
839 | |
840 | wYclosest = 12345678; |
841 | wYcorrect = 12345678; |
842 | wZclosest = 12345678; |
843 | wZcorrect = 12345678; |
844 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); |
845 | |
846 | // Find the closest correct cluster for debugging purposes |
029cd327 |
847 | if (timeBin) { |
a9814c09 |
848 | Float_t minDY = 1000000; |
029cd327 |
849 | for (Int_t i=0; i<timeBin; i++) { |
850 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
a9814c09 |
851 | if((c->GetLabel(0) != trackIndex) && |
852 | (c->GetLabel(1) != trackIndex) && |
853 | (c->GetLabel(2) != trackIndex)) continue; |
854 | if(TMath::Abs(c->GetY() - y) > minDY) continue; |
855 | minDY = TMath::Abs(c->GetY() - y); |
856 | wYcorrect = c->GetY(); |
857 | wZcorrect = c->GetZ(); |
858 | |
859 | Double_t h01 = GetTiltFactor(c); |
860 | wChi2 = t.GetPredictedChi2(c, h01); |
861 | } |
5443e65e |
862 | } |
46d29e70 |
863 | |
5443e65e |
864 | // Now go for the real cluster search |
a819a5f7 |
865 | |
029cd327 |
866 | if (timeBin) { |
46e2d86c |
867 | // |
868 | //find cluster in history |
869 | cl =0; |
870 | |
871 | AliTRDcluster * cl0 = timeBin[0]; |
872 | if (!cl0) { |
873 | continue; |
874 | } |
875 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); |
3c625a9b |
876 | if (plane>lastplane) continue; |
46e2d86c |
877 | Int_t timebin = cl0->GetLocalTimeBin(); |
878 | AliTRDcluster * cl2= GetCluster(&t,plane, timebin); |
3c625a9b |
879 | if (cl2) { |
880 | cl =cl2; |
881 | Double_t h01 = GetTiltFactor(cl); |
882 | maxChi2=t.GetPredictedChi2(cl,h01); |
883 | } |
46e2d86c |
884 | if ((!cl) && road>fgkWideRoad) { |
885 | //if (t.GetNumberOfClusters()>4) |
886 | // cerr<<t.GetNumberOfClusters() |
887 | // <<"FindProlongation warning: Too broad road !\n"; |
888 | continue; |
889 | } |
890 | |
891 | |
892 | if(!cl){ |
893 | |
894 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
895 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
896 | if (c->GetY() > y+road) break; |
897 | if (c->IsUsed() > 0) continue; |
898 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; |
899 | |
900 | Double_t h01 = GetTiltFactor(c); |
901 | Double_t chi2=t.GetPredictedChi2(c,h01); |
902 | |
903 | if (chi2 > maxChi2) continue; |
904 | maxChi2=chi2; |
905 | cl=c; |
906 | index=timeBin.GetIndex(i); |
907 | } |
908 | } |
a9814c09 |
909 | |
910 | if(!cl) { |
911 | |
029cd327 |
912 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
913 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
a9814c09 |
914 | |
915 | if (c->GetY() > y+road) break; |
916 | if (c->IsUsed() > 0) continue; |
917 | if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; |
918 | |
919 | Double_t h01 = GetTiltFactor(c); |
920 | Double_t chi2=t.GetPredictedChi2(c, h01); |
921 | |
029cd327 |
922 | if (chi2 > maxChi2) continue; |
923 | maxChi2=chi2; |
a9814c09 |
924 | cl=c; |
029cd327 |
925 | index=timeBin.GetIndex(i); |
a9814c09 |
926 | } |
927 | } |
a9814c09 |
928 | if (cl) { |
929 | wYclosest = cl->GetY(); |
930 | wZclosest = cl->GetZ(); |
931 | Double_t h01 = GetTiltFactor(cl); |
932 | |
933 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); |
46e2d86c |
934 | //printf("Track position\t%f\t%f\t%f\n",t.GetX(),t.GetY(),t.GetZ()); |
935 | //printf("Cluster position\t%d\t%f\t%f\n",cl->GetLocalTimeBin(),cl->GetY(),cl->GetZ()); |
3c625a9b |
936 | Int_t det = cl->GetDetector(); |
937 | Int_t plane = fGeom->GetPlane(det); |
46e2d86c |
938 | |
3c625a9b |
939 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
940 | //if(!t.Update(cl,maxChi2,index,h01)) { |
941 | //if(!tryAgain--) return 0; |
a9814c09 |
942 | } |
029cd327 |
943 | else tryAgain=fMaxGap; |
a9814c09 |
944 | } |
945 | else { |
3c625a9b |
946 | //if (tryAgain==0) break; |
029cd327 |
947 | tryAgain--; |
a9814c09 |
948 | } |
949 | |
950 | /* |
951 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { |
952 | |
953 | printf(" %f", wIndex); //1 |
954 | printf(" %f", wTB); //2 |
955 | printf(" %f", wYrt); //3 |
956 | printf(" %f", wYclosest); //4 |
957 | printf(" %f", wYcorrect); //5 |
958 | printf(" %f", wYwindow); //6 |
959 | printf(" %f", wZrt); //7 |
960 | printf(" %f", wZclosest); //8 |
961 | printf(" %f", wZcorrect); //9 |
962 | printf(" %f", wZwindow); //10 |
963 | printf(" %f", wPx); //11 |
964 | printf(" %f", wPy); //12 |
965 | printf(" %f", wPz); //13 |
966 | printf(" %f", wSigmaC2*1000000); //14 |
967 | printf(" %f", wSigmaTgl2*1000); //15 |
968 | printf(" %f", wSigmaY2); //16 |
969 | // printf(" %f", wSigmaZ2); //17 |
970 | printf(" %f", wChi2); //17 |
971 | printf(" %f", wC); //18 |
972 | printf("\n"); |
973 | } |
974 | */ |
5443e65e |
975 | } |
976 | } |
977 | } |
978 | return expectedNumberOfClusters; |
979 | |
980 | |
981 | } |
a819a5f7 |
982 | |
5443e65e |
983 | //___________________________________________________________________ |
46d29e70 |
984 | |
5443e65e |
985 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
986 | { |
987 | // Starting from current radial position of track <t> this function |
988 | // extrapolates the track up to outer timebin and in the sensitive |
989 | // layers confirms prolongation if a close cluster is found. |
990 | // Returns the number of clusters expected to be found in sensitive layers |
46d29e70 |
991 | |
5443e65e |
992 | Float_t wIndex, wTB, wChi2; |
993 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; |
994 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; |
995 | Float_t wPx, wPy, wPz, wC; |
029cd327 |
996 | Double_t px, py, pz; |
5443e65e |
997 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
46d29e70 |
998 | |
5443e65e |
999 | Int_t trackIndex = t.GetLabel(); |
029cd327 |
1000 | Int_t tryAgain=fMaxGap; |
46d29e70 |
1001 | |
5443e65e |
1002 | Double_t alpha=t.GetAlpha(); |
9c9d2487 |
1003 | TVector2::Phi_0_2pi(alpha); |
46d29e70 |
1004 | |
9c9d2487 |
1005 | Int_t s; |
46d29e70 |
1006 | |
5443e65e |
1007 | Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); |
029cd327 |
1008 | Double_t radLength, rho, x, dx, y, ymax = 0, z; |
5443e65e |
1009 | Bool_t lookForCluster; |
a819a5f7 |
1010 | |
5443e65e |
1011 | Int_t expectedNumberOfClusters = 0; |
1012 | x = t.GetX(); |
46d29e70 |
1013 | |
5443e65e |
1014 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 |
1015 | |
029cd327 |
1016 | Int_t nRefPlane = fgkFirstPlane; |
9c9d2487 |
1017 | Bool_t isNewLayer = kFALSE; |
46d29e70 |
1018 | |
9c9d2487 |
1019 | Double_t chi2; |
1020 | Double_t minDY; |
3c625a9b |
1021 | Int_t zone =-10; |
1022 | Int_t nr; |
1023 | for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) { |
9c9d2487 |
1024 | |
1025 | y = t.GetY(); |
1026 | z = t.GetZ(); |
46d29e70 |
1027 | |
5443e65e |
1028 | // first propagate to the outer surface of the current time bin |
46d29e70 |
1029 | |
9c9d2487 |
1030 | s = t.GetSector(); |
029cd327 |
1031 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 |
1032 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; |
1033 | y = t.GetY(); |
1034 | z = t.GetZ(); |
46d29e70 |
1035 | |
029cd327 |
1036 | if(!t.PropagateTo(x,radLength,rho)) break; |
3c625a9b |
1037 | // if (!AdjustSector(&t)) break; |
1038 | // |
1039 | // MI -fix untill correct material desription will be implemented |
1040 | // |
1041 | Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material - |
9c9d2487 |
1042 | if (!AdjustSector(&t)) break; |
3c625a9b |
1043 | if (TMath::Abs(angle - t.GetAlpha())>0.000001) break; //better to stop track |
1044 | Int_t currentzone = fTrSec[s]->GetLayer(nr)->GetZone(z); |
1045 | if (currentzone==-10) break; // we are in the frame |
1046 | if (currentzone>-10){ // layer knows where we are |
1047 | if (zone==-10) zone = currentzone; |
1048 | if (zone!=currentzone) break; |
1049 | } |
1050 | // |
1051 | // |
9c9d2487 |
1052 | s = t.GetSector(); |
029cd327 |
1053 | if (!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 |
1054 | |
5443e65e |
1055 | y = t.GetY(); |
9c9d2487 |
1056 | z = t.GetZ(); |
a819a5f7 |
1057 | |
9c9d2487 |
1058 | // Barrel Tracks [SR, 04.04.2003] |
46d29e70 |
1059 | |
9c9d2487 |
1060 | s = t.GetSector(); |
1061 | if (fTrSec[s]->GetLayer(nr)->IsSensitive() != |
1062 | fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { |
46d29e70 |
1063 | |
c630aafd |
1064 | // if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); |
9c9d2487 |
1065 | } |
46d29e70 |
1066 | |
9c9d2487 |
1067 | if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && |
1068 | ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { |
1069 | isNewLayer = kTRUE; |
1070 | } else {isNewLayer = kFALSE;} |
46d29e70 |
1071 | |
5443e65e |
1072 | y = t.GetY(); |
9c9d2487 |
1073 | z = t.GetZ(); |
a819a5f7 |
1074 | |
9c9d2487 |
1075 | // now propagate to the middle plane of the next time bin |
029cd327 |
1076 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e |
1077 | |
9c9d2487 |
1078 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); |
029cd327 |
1079 | if(!t.PropagateTo(x,radLength,rho)) break; |
9c9d2487 |
1080 | if (!AdjustSector(&t)) break; |
1081 | s = t.GetSector(); |
029cd327 |
1082 | if(!t.PropagateTo(x,radLength,rho)) break; |
46d29e70 |
1083 | |
9c9d2487 |
1084 | y = t.GetY(); |
1085 | z = t.GetZ(); |
1086 | |
1087 | if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); |
5443e65e |
1088 | // printf("label %d, pl %d, lookForCluster %d \n", |
a9814c09 |
1089 | // trackIndex, nr+1, lookForCluster); |
5443e65e |
1090 | |
1091 | if(lookForCluster) { |
1092 | expectedNumberOfClusters++; |
1093 | |
1094 | wIndex = (Float_t) t.GetLabel(); |
1095 | wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); |
1096 | |
029cd327 |
1097 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); |
5443e65e |
1098 | Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); |
1099 | Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); |
1100 | if((t.GetSigmaY2() + sy2) < 0) break; |
1101 | Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); |
1102 | Double_t y=t.GetY(), z=t.GetZ(); |
1103 | |
1104 | wYrt = (Float_t) y; |
1105 | wZrt = (Float_t) z; |
1106 | wYwindow = (Float_t) road; |
029cd327 |
1107 | t.GetPxPyPz(px,py,pz); |
1108 | wPx = (Float_t) px; |
1109 | wPy = (Float_t) py; |
1110 | wPz = (Float_t) pz; |
5443e65e |
1111 | wC = (Float_t) t.GetC(); |
1112 | wSigmaC2 = (Float_t) t.GetSigmaC2(); |
1113 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); |
1114 | wSigmaY2 = (Float_t) t.GetSigmaY2(); |
1115 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); |
1116 | wChi2 = -1; |
1117 | |
029cd327 |
1118 | if (road>fgkWideRoad) { |
a9814c09 |
1119 | if (t.GetNumberOfClusters()>4) |
1120 | cerr<<t.GetNumberOfClusters() |
1121 | <<"FindProlongation warning: Too broad road !\n"; |
1122 | return 0; |
5443e65e |
1123 | } |
1124 | |
1125 | AliTRDcluster *cl=0; |
1126 | UInt_t index=0; |
1127 | |
029cd327 |
1128 | Double_t maxChi2=fgkMaxChi2; |
5443e65e |
1129 | |
9c9d2487 |
1130 | if (isNewLayer) { |
1131 | road = 3 * road; |
1132 | //sz2 = 3 * sz2; |
029cd327 |
1133 | maxChi2 = 10 * fgkMaxChi2; |
9c9d2487 |
1134 | } |
1135 | |
029cd327 |
1136 | if (nRefPlane == fgkFirstPlane) maxChi2 = 20 * fgkMaxChi2; |
1137 | if (nRefPlane == fgkFirstPlane+2) maxChi2 = 15 * fgkMaxChi2; |
1138 | if (t.GetNRotate() > 0) maxChi2 = 3 * maxChi2; |
9c9d2487 |
1139 | |
1140 | |
5443e65e |
1141 | wYclosest = 12345678; |
1142 | wYcorrect = 12345678; |
1143 | wZclosest = 12345678; |
1144 | wZcorrect = 12345678; |
1145 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); |
1146 | |
1147 | // Find the closest correct cluster for debugging purposes |
029cd327 |
1148 | if (timeBin) { |
9c9d2487 |
1149 | minDY = 1000000; |
029cd327 |
1150 | for (Int_t i=0; i<timeBin; i++) { |
1151 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
a9814c09 |
1152 | if((c->GetLabel(0) != trackIndex) && |
1153 | (c->GetLabel(1) != trackIndex) && |
1154 | (c->GetLabel(2) != trackIndex)) continue; |
1155 | if(TMath::Abs(c->GetY() - y) > minDY) continue; |
9c9d2487 |
1156 | //minDY = TMath::Abs(c->GetY() - y); |
1157 | minDY = c->GetY() - y; |
a9814c09 |
1158 | wYcorrect = c->GetY(); |
1159 | wZcorrect = c->GetZ(); |
1160 | |
1161 | Double_t h01 = GetTiltFactor(c); |
1162 | wChi2 = t.GetPredictedChi2(c, h01); |
1163 | } |
5443e65e |
1164 | } |
46d29e70 |
1165 | |
5443e65e |
1166 | // Now go for the real cluster search |
46d29e70 |
1167 | |
029cd327 |
1168 | if (timeBin) { |
5443e65e |
1169 | |
029cd327 |
1170 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1171 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
a9814c09 |
1172 | if (c->GetY() > y+road) break; |
9c9d2487 |
1173 | if (c->IsUsed() > 0) continue; |
a9814c09 |
1174 | if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; |
1175 | |
1176 | Double_t h01 = GetTiltFactor(c); |
9c9d2487 |
1177 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 |
1178 | |
029cd327 |
1179 | if (chi2 > maxChi2) continue; |
1180 | maxChi2=chi2; |
a9814c09 |
1181 | cl=c; |
029cd327 |
1182 | index=timeBin.GetIndex(i); |
9c9d2487 |
1183 | |
1184 | //check is correct |
1185 | if((c->GetLabel(0) != trackIndex) && |
1186 | (c->GetLabel(1) != trackIndex) && |
1187 | (c->GetLabel(2) != trackIndex)) t.AddNWrong(); |
a9814c09 |
1188 | } |
5443e65e |
1189 | |
a9814c09 |
1190 | if(!cl) { |
1191 | |
029cd327 |
1192 | for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) { |
1193 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); |
a9814c09 |
1194 | |
1195 | if (c->GetY() > y+road) break; |
9c9d2487 |
1196 | if (c->IsUsed() > 0) continue; |
a9814c09 |
1197 | if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; |
1198 | |
1199 | Double_t h01 = GetTiltFactor(c); |
9c9d2487 |
1200 | chi2=t.GetPredictedChi2(c,h01); |
a9814c09 |
1201 | |
029cd327 |
1202 | if (chi2 > maxChi2) continue; |
1203 | maxChi2=chi2; |
a9814c09 |
1204 | cl=c; |
029cd327 |
1205 | index=timeBin.GetIndex(i); |
a9814c09 |
1206 | } |
1207 | } |
1208 | |
1209 | if (cl) { |
1210 | wYclosest = cl->GetY(); |
1211 | wZclosest = cl->GetZ(); |
1212 | |
1213 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); |
1214 | Double_t h01 = GetTiltFactor(cl); |
3c625a9b |
1215 | Int_t det = cl->GetDetector(); |
1216 | Int_t plane = fGeom->GetPlane(det); |
1217 | |
1218 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
1219 | //if(!t.Update(cl,maxChi2,index,h01)) { |
029cd327 |
1220 | if(!tryAgain--) return 0; |
a9814c09 |
1221 | } |
029cd327 |
1222 | else tryAgain=fMaxGap; |
a9814c09 |
1223 | } |
1224 | else { |
029cd327 |
1225 | if (tryAgain==0) break; |
1226 | tryAgain--; |
9c9d2487 |
1227 | |
1228 | //if (minDY < 1000000 && isNewLayer) |
1229 | //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" << |
029cd327 |
1230 | // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << maxChi2 << endl; |
9c9d2487 |
1231 | |
a9814c09 |
1232 | } |
1233 | |
9c9d2487 |
1234 | isNewLayer = kFALSE; |
1235 | |
a9814c09 |
1236 | /* |
1237 | if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { |
1238 | |
1239 | printf(" %f", wIndex); //1 |
1240 | printf(" %f", wTB); //2 |
1241 | printf(" %f", wYrt); //3 |
1242 | printf(" %f", wYclosest); //4 |
1243 | printf(" %f", wYcorrect); //5 |
1244 | printf(" %f", wYwindow); //6 |
1245 | printf(" %f", wZrt); //7 |
1246 | printf(" %f", wZclosest); //8 |
1247 | printf(" %f", wZcorrect); //9 |
1248 | printf(" %f", wZwindow); //10 |
1249 | printf(" %f", wPx); //11 |
1250 | printf(" %f", wPy); //12 |
1251 | printf(" %f", wPz); //13 |
1252 | printf(" %f", wSigmaC2*1000000); //14 |
1253 | printf(" %f", wSigmaTgl2*1000); //15 |
1254 | printf(" %f", wSigmaY2); //16 |
1255 | // printf(" %f", wSigmaZ2); //17 |
1256 | printf(" %f", wChi2); //17 |
1257 | printf(" %f", wC); //18 |
1258 | printf("\n"); |
1259 | } |
1260 | */ |
5443e65e |
1261 | } |
1262 | } |
1263 | } |
3c625a9b |
1264 | if (nr<outerTB) |
1265 | t.SetStop(kTRUE); |
1266 | else |
1267 | t.SetStop(kFALSE); |
5443e65e |
1268 | return expectedNumberOfClusters; |
9c9d2487 |
1269 | |
1270 | |
5443e65e |
1271 | } |
1272 | |
1e9bb598 |
1273 | //--------------------------------------------------------------------------- |
1274 | Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf) |
1275 | { |
1276 | // Starting from current position on track=t this function tries |
1277 | // to extrapolate the track up to timeBin=0 and to reuse already |
1278 | // assigned clusters. Returns the number of clusters |
1279 | // expected to be found in sensitive layers |
1280 | // get indices of assigned clusters for each layer |
1281 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) |
1282 | |
1283 | Int_t iCluster[90]; |
1284 | for (Int_t i = 0; i < 90; i++) iCluster[i] = 0; |
1285 | for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) { |
1286 | Int_t index = t.GetClusterIndex(i); |
1287 | AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index); |
1288 | if (!cl) continue; |
1289 | Int_t detector=cl->GetDetector(); |
1290 | Int_t localTimeBin=cl->GetLocalTimeBin(); |
1291 | Int_t sector=fGeom->GetSector(detector); |
1292 | Int_t plane=fGeom->GetPlane(detector); |
1293 | |
1294 | Int_t trackingSector = CookSectorIndex(sector); |
1295 | |
1296 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
1297 | if(gtb < 0) continue; |
1298 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
1299 | iCluster[layer] = index; |
1300 | } |
1301 | t.ResetClusters(); |
1302 | |
1303 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
1304 | |
1305 | Double_t alpha=t.GetAlpha(); |
1306 | alpha = TVector2::Phi_0_2pi(alpha); |
1307 | |
1308 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
1309 | Double_t radLength, rho, x, dx, y, ymax, z; |
1310 | |
1311 | Int_t expectedNumberOfClusters = 0; |
1312 | Bool_t lookForCluster; |
1313 | |
1314 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
1315 | |
1316 | |
1317 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { |
1318 | |
1319 | y = t.GetY(); z = t.GetZ(); |
1320 | |
1321 | // first propagate to the inner surface of the current time bin |
1322 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
1323 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
1324 | if(!t.PropagateTo(x,radLength,rho)) break; |
1325 | y = t.GetY(); |
1326 | ymax = x*TMath::Tan(0.5*alpha); |
1327 | if (y > ymax) { |
1328 | s = (s+1) % ns; |
1329 | if (!t.Rotate(alpha)) break; |
1330 | if(!t.PropagateTo(x,radLength,rho)) break; |
1331 | } else if (y <-ymax) { |
1332 | s = (s-1+ns) % ns; |
1333 | if (!t.Rotate(-alpha)) break; |
1334 | if(!t.PropagateTo(x,radLength,rho)) break; |
1335 | } |
1336 | |
1337 | y = t.GetY(); z = t.GetZ(); |
1338 | |
1339 | // now propagate to the middle plane of the next time bin |
1340 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
1341 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
1342 | if(!t.PropagateTo(x,radLength,rho)) break; |
1343 | y = t.GetY(); |
1344 | ymax = x*TMath::Tan(0.5*alpha); |
1345 | if (y > ymax) { |
1346 | s = (s+1) % ns; |
1347 | if (!t.Rotate(alpha)) break; |
1348 | if(!t.PropagateTo(x,radLength,rho)) break; |
1349 | } else if (y <-ymax) { |
1350 | s = (s-1+ns) % ns; |
1351 | if (!t.Rotate(-alpha)) break; |
1352 | if(!t.PropagateTo(x,radLength,rho)) break; |
1353 | } |
1354 | |
1355 | if(lookForCluster) expectedNumberOfClusters++; |
1356 | |
1357 | // use assigned cluster |
1358 | if (!iCluster[nr-1]) continue; |
1359 | AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); |
1360 | Double_t h01 = GetTiltFactor(cl); |
1361 | Double_t chi2=t.GetPredictedChi2(cl, h01); |
1362 | t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); |
1363 | t.Update(cl,chi2,iCluster[nr-1],h01); |
1364 | } |
1365 | |
1366 | return expectedNumberOfClusters; |
1367 | } |
1368 | |
5443e65e |
1369 | //___________________________________________________________________ |
1370 | |
1371 | Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) |
1372 | { |
1373 | // Starting from current radial position of track <t> this function |
1374 | // extrapolates the track up to radial position <xToGo>. |
1375 | // Returns 1 if track reaches the plane, and 0 otherwise |
1376 | |
1377 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
1378 | |
1379 | Double_t alpha=t.GetAlpha(); |
1380 | |
1381 | if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); |
1382 | if (alpha < 0. ) alpha += 2.*TMath::Pi(); |
1383 | |
1384 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
1385 | |
1386 | Bool_t lookForCluster; |
029cd327 |
1387 | Double_t radLength, rho, x, dx, y, ymax, z; |
5443e65e |
1388 | |
1389 | x = t.GetX(); |
1390 | |
1391 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
1392 | |
1393 | Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); |
1394 | |
1395 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr<plToGo; nr++) { |
1396 | |
1397 | y = t.GetY(); z = t.GetZ(); |
1398 | |
1399 | // first propagate to the outer surface of the current time bin |
029cd327 |
1400 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e |
1401 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 |
1402 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e |
1403 | y = t.GetY(); |
1404 | ymax = x*TMath::Tan(0.5*alpha); |
1405 | if (y > ymax) { |
1406 | s = (s+1) % ns; |
1407 | if (!t.Rotate(alpha)) return 0; |
1408 | } else if (y <-ymax) { |
1409 | s = (s-1+ns) % ns; |
1410 | if (!t.Rotate(-alpha)) return 0; |
1411 | } |
029cd327 |
1412 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e |
1413 | |
1414 | y = t.GetY(); z = t.GetZ(); |
1415 | |
1416 | // now propagate to the middle plane of the next time bin |
029cd327 |
1417 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e |
1418 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 |
1419 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e |
1420 | y = t.GetY(); |
1421 | ymax = x*TMath::Tan(0.5*alpha); |
1422 | if (y > ymax) { |
1423 | s = (s+1) % ns; |
1424 | if (!t.Rotate(alpha)) return 0; |
1425 | } else if (y <-ymax) { |
1426 | s = (s-1+ns) % ns; |
1427 | if (!t.Rotate(-alpha)) return 0; |
1428 | } |
029cd327 |
1429 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e |
1430 | } |
1431 | return 1; |
1432 | } |
1433 | |
1434 | //___________________________________________________________________ |
1435 | |
1436 | Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) |
1437 | { |
1438 | // Starting from current radial position of track <t> this function |
1439 | // extrapolates the track up to radial position of the outermost |
1440 | // padrow of the TPC. |
1441 | // Returns 1 if track reaches the TPC, and 0 otherwise |
1442 | |
c630aafd |
1443 | //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
5443e65e |
1444 | |
1445 | Double_t alpha=t.GetAlpha(); |
c630aafd |
1446 | alpha = TVector2::Phi_0_2pi(alpha); |
5443e65e |
1447 | |
1448 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
1449 | |
1450 | Bool_t lookForCluster; |
029cd327 |
1451 | Double_t radLength, rho, x, dx, y, /*ymax,*/ z; |
5443e65e |
1452 | |
1453 | x = t.GetX(); |
1454 | |
1455 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
5443e65e |
1456 | Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); |
1457 | |
1458 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { |
1459 | |
9c9d2487 |
1460 | y = t.GetY(); |
1461 | z = t.GetZ(); |
5443e65e |
1462 | |
1463 | // first propagate to the outer surface of the current time bin |
029cd327 |
1464 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 |
1465 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; |
1466 | |
029cd327 |
1467 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 |
1468 | AdjustSector(&t); |
029cd327 |
1469 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e |
1470 | |
9c9d2487 |
1471 | y = t.GetY(); |
1472 | z = t.GetZ(); |
5443e65e |
1473 | |
1474 | // now propagate to the middle plane of the next time bin |
029cd327 |
1475 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 |
1476 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); |
1477 | |
029cd327 |
1478 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 |
1479 | AdjustSector(&t); |
029cd327 |
1480 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
c5a8e3df |
1481 | } |
5443e65e |
1482 | return 1; |
1483 | } |
1484 | |
c630aafd |
1485 | //_____________________________________________________________________________ |
1486 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) |
1487 | { |
1488 | // Fills clusters into TRD tracking_sectors |
1489 | // Note that the numbering scheme for the TRD tracking_sectors |
1490 | // differs from that of TRD sectors |
1491 | |
1492 | if (ReadClusters(fClusters,cTree)) { |
1493 | Error("LoadClusters","Problem with reading the clusters !"); |
1494 | return 1; |
1495 | } |
1496 | Int_t ncl=fClusters->GetEntriesFast(); |
b7a0917f |
1497 | fNclusters=ncl; |
c630aafd |
1498 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; |
1499 | |
1500 | UInt_t index; |
3c625a9b |
1501 | for (Int_t ichamber=0;ichamber<5;ichamber++) |
1502 | for (Int_t isector=0;isector<18;isector++){ |
1503 | fHoles[ichamber][isector]=kTRUE; |
1504 | } |
1505 | |
1506 | |
c630aafd |
1507 | while (ncl--) { |
1508 | // printf("\r %d left ",ncl); |
1509 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); |
029cd327 |
1510 | Int_t detector=c->GetDetector(); |
1511 | Int_t localTimeBin=c->GetLocalTimeBin(); |
c630aafd |
1512 | Int_t sector=fGeom->GetSector(detector); |
1513 | Int_t plane=fGeom->GetPlane(detector); |
3c625a9b |
1514 | |
029cd327 |
1515 | Int_t trackingSector = CookSectorIndex(sector); |
3c625a9b |
1516 | if (c->GetLabel(0)>0){ |
1517 | Int_t chamber = fGeom->GetChamber(detector); |
1518 | fHoles[chamber][trackingSector]=kFALSE; |
1519 | } |
c630aafd |
1520 | |
029cd327 |
1521 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
c630aafd |
1522 | if(gtb < 0) continue; |
029cd327 |
1523 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd |
1524 | |
1525 | index=ncl; |
029cd327 |
1526 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
c630aafd |
1527 | } |
7bed16a7 |
1528 | // printf("\r\n"); |
3c625a9b |
1529 | // |
1530 | // |
1531 | /* |
1532 | for (Int_t isector=0;isector<18;isector++){ |
1533 | for (Int_t ichamber=0;ichamber<5;ichamber++) |
1534 | if (fHoles[ichamber][isector]!=fGeom->IsHole(0,ichamber,17-isector)) |
1535 | printf("Problem \t%d\t%d\t%d\t%d\n",isector,ichamber,fHoles[ichamber][isector], |
1536 | fGeom->IsHole(0,ichamber,17-isector)); |
1537 | } |
1538 | */ |
c630aafd |
1539 | return 0; |
1540 | } |
1541 | |
5443e65e |
1542 | //_____________________________________________________________________________ |
b7a0917f |
1543 | void AliTRDtracker::UnloadClusters() |
5443e65e |
1544 | { |
1545 | // |
1546 | // Clears the arrays of clusters and tracks. Resets sectors and timebins |
1547 | // |
1548 | |
1549 | Int_t i, nentr; |
1550 | |
1551 | nentr = fClusters->GetEntriesFast(); |
1552 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); |
b7a0917f |
1553 | fNclusters = 0; |
5443e65e |
1554 | |
1555 | nentr = fSeeds->GetEntriesFast(); |
1556 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); |
1557 | |
1558 | nentr = fTracks->GetEntriesFast(); |
1559 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); |
1560 | |
1561 | Int_t nsec = AliTRDgeometry::kNsect; |
1562 | |
1563 | for (i = 0; i < nsec; i++) { |
1564 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { |
1565 | fTrSec[i]->GetLayer(pl)->Clear(); |
1566 | } |
1567 | } |
1568 | |
1569 | } |
1570 | |
1571 | //__________________________________________________________________________ |
1572 | void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) |
1573 | { |
1574 | // Creates track seeds using clusters in timeBins=i1,i2 |
1575 | |
1576 | if(turn > 2) { |
1577 | cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl; |
1578 | return; |
1579 | } |
1580 | |
1581 | Double_t x[5], c[15]; |
029cd327 |
1582 | Int_t maxSec=AliTRDgeometry::kNsect; |
5443e65e |
1583 | |
1584 | Double_t alpha=AliTRDgeometry::GetAlpha(); |
1585 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; |
1586 | Double_t cs=cos(alpha), sn=sin(alpha); |
1587 | Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); |
1588 | |
1589 | |
1590 | Int_t i2 = fTrSec[0]->GetLayerNumber(inner); |
1591 | Int_t i1 = fTrSec[0]->GetLayerNumber(outer); |
1592 | |
1593 | Double_t x1 =fTrSec[0]->GetX(i1); |
1594 | Double_t xx2=fTrSec[0]->GetX(i2); |
1595 | |
029cd327 |
1596 | for (Int_t ns=0; ns<maxSec; ns++) { |
5443e65e |
1597 | |
029cd327 |
1598 | Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
1599 | Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); |
5443e65e |
1600 | Int_t nm=(*fTrSec[ns]->GetLayer(i2)); |
029cd327 |
1601 | Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
1602 | Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); |
5443e65e |
1603 | |
1604 | AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); |
1605 | |
1606 | for (Int_t is=0; is < r1; is++) { |
1607 | Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); |
1608 | |
1609 | for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { |
a9814c09 |
1610 | |
1611 | const AliTRDcluster *cl; |
1612 | Double_t x2, y2, z2; |
1613 | Double_t x3=0., y3=0.; |
1614 | |
1615 | if (js<nl2) { |
1616 | if(turn != 2) continue; |
029cd327 |
1617 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 |
1618 | cl=r2[js]; |
1619 | y2=cl->GetY(); z2=cl->GetZ(); |
1620 | |
1621 | x2= xx2*cs2+y2*sn2; |
1622 | y2=-xx2*sn2+y2*cs2; |
1623 | } |
1624 | else if (js<nl2+nl) { |
1625 | if(turn != 1) continue; |
029cd327 |
1626 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 |
1627 | cl=r2[js-nl2]; |
1628 | y2=cl->GetY(); z2=cl->GetZ(); |
1629 | |
1630 | x2= xx2*cs+y2*sn; |
1631 | y2=-xx2*sn+y2*cs; |
1632 | } |
1633 | else if (js<nl2+nl+nm) { |
1634 | if(turn != 1) continue; |
1635 | AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2)); |
1636 | cl=r2[js-nl2-nl]; |
1637 | x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); |
1638 | } |
1639 | else if (js<nl2+nl+nm+nu) { |
1640 | if(turn != 1) continue; |
029cd327 |
1641 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
a9814c09 |
1642 | cl=r2[js-nl2-nl-nm]; |
1643 | y2=cl->GetY(); z2=cl->GetZ(); |
1644 | |
1645 | x2=xx2*cs-y2*sn; |
1646 | y2=xx2*sn+y2*cs; |
1647 | } |
1648 | else { |
1649 | if(turn != 2) continue; |
029cd327 |
1650 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); |
a9814c09 |
1651 | cl=r2[js-nl2-nl-nm-nu]; |
1652 | y2=cl->GetY(); z2=cl->GetZ(); |
1653 | |
1654 | x2=xx2*cs2-y2*sn2; |
1655 | y2=xx2*sn2+y2*cs2; |
1656 | } |
1657 | |
029cd327 |
1658 | if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; |
a9814c09 |
1659 | |
1660 | Double_t zz=z1 - z1/x1*(x1-x2); |
1661 | |
029cd327 |
1662 | if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; |
a9814c09 |
1663 | |
1664 | Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); |
1665 | if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} |
1666 | |
1667 | x[0]=y1; |
1668 | x[1]=z1; |
1669 | x[4]=f1trd(x1,y1,x2,y2,x3,y3); |
1670 | |
029cd327 |
1671 | if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; |
a9814c09 |
1672 | |
1673 | x[2]=f2trd(x1,y1,x2,y2,x3,y3); |
1674 | |
1675 | if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; |
1676 | |
1677 | x[3]=f3trd(x1,y1,x2,y2,z1,z2); |
1678 | |
029cd327 |
1679 | if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; |
a9814c09 |
1680 | |
1681 | Double_t a=asin(x[2]); |
1682 | Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); |
1683 | |
029cd327 |
1684 | if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; |
a9814c09 |
1685 | |
1686 | Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); |
1687 | Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); |
029cd327 |
1688 | Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; |
a9814c09 |
1689 | |
1690 | // Tilt changes |
1691 | Double_t h01 = GetTiltFactor(r1[is]); |
029cd327 |
1692 | Double_t xuFactor = 100.; |
b8dc2353 |
1693 | if(fNoTilt) { |
1694 | h01 = 0; |
029cd327 |
1695 | xuFactor = 1; |
b8dc2353 |
1696 | } |
1697 | |
fd621f36 |
1698 | sy1=sy1+sz1*h01*h01; |
b3a5a838 |
1699 | Double_t syz=sz1*(-h01); |
a9814c09 |
1700 | // end of tilt changes |
1701 | |
b3a5a838 |
1702 | Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; |
1703 | Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; |
1704 | Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; |
1705 | Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; |
1706 | Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; |
1707 | Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; |
1708 | Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; |
1709 | Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; |
1710 | Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; |
1711 | Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; |
1712 | |
a9814c09 |
1713 | |
b3a5a838 |
1714 | c[0]=sy1; |
a9814c09 |
1715 | // c[1]=0.; c[2]=sz1; |
029cd327 |
1716 | c[1]=syz; c[2]=sz1*xuFactor; |
b3a5a838 |
1717 | c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; |
1718 | c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; |
1719 | c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; |
1720 | c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; |
1721 | c[13]=f30*sy1*f40+f32*sy2*f42; |
1722 | c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; |
a9814c09 |
1723 | |
1724 | UInt_t index=r1.GetIndex(is); |
1725 | |
1726 | AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); |
1727 | |
1728 | Int_t rc=FollowProlongation(*track, i2); |
1729 | |
1730 | if ((rc < 1) || |
1731 | (track->GetNumberOfClusters() < |
029cd327 |
1732 | (outer-inner)*fgkMinClustersInSeed)) delete track; |
a9814c09 |
1733 | else { |
1734 | fSeeds->AddLast(track); fNseeds++; |
e24ea474 |
1735 | // cerr<<"\r found seed "<<fNseeds; |
a9814c09 |
1736 | } |
5443e65e |
1737 | } |
1738 | } |
1739 | } |
1740 | } |
1741 | |
1742 | //_____________________________________________________________________________ |
b7a0917f |
1743 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const |
5443e65e |
1744 | { |
1745 | // |
a819a5f7 |
1746 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
1747 | // from the file. The names of the cluster tree and branches |
1748 | // should match the ones used in AliTRDclusterizer::WriteClusters() |
1749 | // |
029cd327 |
1750 | TObjArray *clusterArray = new TObjArray(400); |
5443e65e |
1751 | |
c630aafd |
1752 | TBranch *branch=ClusterTree->GetBranch("TRDcluster"); |
1753 | if (!branch) { |
1754 | Error("ReadClusters","Can't get the branch !"); |
1755 | return 1; |
1756 | } |
029cd327 |
1757 | branch->SetAddress(&clusterArray); |
5443e65e |
1758 | |
1759 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); |
19dd5b2f |
1760 | // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); |
a819a5f7 |
1761 | |
a819a5f7 |
1762 | // Loop through all entries in the tree |
eb187bed |
1763 | Int_t nbytes = 0; |
a819a5f7 |
1764 | AliTRDcluster *c = 0; |
7bed16a7 |
1765 | // printf("\n"); |
a819a5f7 |
1766 | |
1767 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
1768 | |
1769 | // Import the tree |
5443e65e |
1770 | nbytes += ClusterTree->GetEvent(iEntry); |
1771 | |
a819a5f7 |
1772 | // Get the number of points in the detector |
029cd327 |
1773 | Int_t nCluster = clusterArray->GetEntriesFast(); |
e24ea474 |
1774 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e |
1775 | |
a819a5f7 |
1776 | // Loop through all TRD digits |
1777 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { |
029cd327 |
1778 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
a819a5f7 |
1779 | AliTRDcluster *co = new AliTRDcluster(*c); |
1780 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); |
5443e65e |
1781 | Int_t ltb = co->GetLocalTimeBin(); |
b8dc2353 |
1782 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
1783 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); |
a819a5f7 |
1784 | array->AddLast(co); |
029cd327 |
1785 | delete clusterArray->RemoveAt(iCluster); |
a819a5f7 |
1786 | } |
1787 | } |
1788 | |
029cd327 |
1789 | delete clusterArray; |
5443e65e |
1790 | |
c630aafd |
1791 | return 0; |
a819a5f7 |
1792 | } |
1793 | |
46d29e70 |
1794 | //__________________________________________________________________ |
029cd327 |
1795 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const |
1796 | { |
1797 | // |
1798 | // This cooks a label. Mmmmh, smells good... |
1799 | // |
46d29e70 |
1800 | |
1801 | Int_t label=123456789, index, i, j; |
5443e65e |
1802 | Int_t ncl=pt->GetNumberOfClusters(); |
029cd327 |
1803 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; |
5443e65e |
1804 | |
029cd327 |
1805 | Bool_t labelAdded; |
46d29e70 |
1806 | |
029cd327 |
1807 | // Int_t s[kRange][2]; |
1808 | Int_t **s = new Int_t* [kRange]; |
1809 | for (i=0; i<kRange; i++) { |
d1b06c24 |
1810 | s[i] = new Int_t[2]; |
1811 | } |
029cd327 |
1812 | for (i=0; i<kRange; i++) { |
46d29e70 |
1813 | s[i][0]=-1; |
1814 | s[i][1]=0; |
1815 | } |
1816 | |
1817 | Int_t t0,t1,t2; |
1818 | for (i=0; i<ncl; i++) { |
5443e65e |
1819 | index=pt->GetClusterIndex(i); |
46d29e70 |
1820 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
5443e65e |
1821 | t0=c->GetLabel(0); |
1822 | t1=c->GetLabel(1); |
1823 | t2=c->GetLabel(2); |
46d29e70 |
1824 | } |
1825 | |
1826 | for (i=0; i<ncl; i++) { |
5443e65e |
1827 | index=pt->GetClusterIndex(i); |
46d29e70 |
1828 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
1829 | for (Int_t k=0; k<3; k++) { |
5443e65e |
1830 | label=c->GetLabel(k); |
029cd327 |
1831 | labelAdded=kFALSE; j=0; |
46d29e70 |
1832 | if (label >= 0) { |
029cd327 |
1833 | while ( (!labelAdded) && ( j < kRange ) ) { |
a9814c09 |
1834 | if (s[j][0]==label || s[j][1]==0) { |
1835 | s[j][0]=label; |
1836 | s[j][1]=s[j][1]+1; |
029cd327 |
1837 | labelAdded=kTRUE; |
a9814c09 |
1838 | } |
1839 | j++; |
1840 | } |
46d29e70 |
1841 | } |
1842 | } |
1843 | } |
1844 | |
46d29e70 |
1845 | Int_t max=0; |
1846 | label = -123456789; |
1847 | |
029cd327 |
1848 | for (i=0; i<kRange; i++) { |
46d29e70 |
1849 | if (s[i][1]>max) { |
1850 | max=s[i][1]; label=s[i][0]; |
1851 | } |
1852 | } |
5443e65e |
1853 | |
029cd327 |
1854 | for (i=0; i<kRange; i++) { |
5443e65e |
1855 | delete []s[i]; |
1856 | } |
1857 | |
d1b06c24 |
1858 | delete []s; |
5443e65e |
1859 | |
1860 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; |
1861 | |
1862 | pt->SetLabel(label); |
1863 | |
46d29e70 |
1864 | } |
1865 | |
c630aafd |
1866 | |
5443e65e |
1867 | //__________________________________________________________________ |
029cd327 |
1868 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const |
1869 | { |
1870 | // |
1871 | // Use clusters, but don't abuse them! |
1872 | // |
1873 | |
5443e65e |
1874 | Int_t ncl=t->GetNumberOfClusters(); |
1875 | for (Int_t i=from; i<ncl; i++) { |
1876 | Int_t index = t->GetClusterIndex(i); |
1877 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
1878 | c->Use(); |
1879 | } |
1880 | } |
1881 | |
1882 | |
1883 | //_____________________________________________________________________ |
029cd327 |
1884 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e |
1885 | { |
1886 | // Parametrised "expected" error of the cluster reconstruction in Y |
1887 | |
1888 | Double_t s = 0.08 * 0.08; |
1889 | return s; |
1890 | } |
1891 | |
1892 | //_____________________________________________________________________ |
029cd327 |
1893 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 |
1894 | { |
5443e65e |
1895 | // Parametrised "expected" error of the cluster reconstruction in Z |
1896 | |
a9814c09 |
1897 | Double_t s = 9 * 9 /12.; |
5443e65e |
1898 | return s; |
1899 | } |
1900 | |
5443e65e |
1901 | //_____________________________________________________________________ |
029cd327 |
1902 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e |
1903 | { |
1904 | // |
029cd327 |
1905 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e |
1906 | // in tracking sector <sector> and plane <plane> |
1907 | // |
1908 | |
029cd327 |
1909 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
5443e65e |
1910 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
1911 | return fTrSec[sector]->GetLayer(pl)->GetX(); |
1912 | |
1913 | } |
1914 | |
c630aafd |
1915 | |
5443e65e |
1916 | //_______________________________________________________ |
1917 | AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, |
029cd327 |
1918 | Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) |
5443e65e |
1919 | { |
0a29d0f1 |
1920 | // |
5443e65e |
1921 | // AliTRDpropagationLayer constructor |
0a29d0f1 |
1922 | // |
46d29e70 |
1923 | |
029cd327 |
1924 | fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; |
1925 | fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; |
5443e65e |
1926 | |
46d29e70 |
1927 | |
029cd327 |
1928 | for(Int_t i=0; i < (Int_t) kZones; i++) { |
5443e65e |
1929 | fZc[i]=0; fZmax[i] = 0; |
a819a5f7 |
1930 | } |
5443e65e |
1931 | |
1932 | fYmax = 0; |
1933 | |
1934 | if(fTimeBinIndex >= 0) { |
029cd327 |
1935 | fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; |
1936 | fIndex = new UInt_t[kMaxClusterPerTimeBin]; |
a819a5f7 |
1937 | } |
46d29e70 |
1938 | |
3c625a9b |
1939 | for (Int_t i=0;i<5;i++) fIsHole[i] = kFALSE; |
5443e65e |
1940 | fHole = kFALSE; |
1941 | fHoleZc = 0; |
1942 | fHoleZmax = 0; |
1943 | fHoleYc = 0; |
1944 | fHoleYmax = 0; |
1945 | fHoleRho = 0; |
1946 | fHoleX0 = 0; |
1947 | |
1948 | } |
1949 | |
1950 | //_______________________________________________________ |
1951 | void AliTRDtracker::AliTRDpropagationLayer::SetHole( |
a9814c09 |
1952 | Double_t Zmax, Double_t Ymax, Double_t rho, |
029cd327 |
1953 | Double_t radLength, Double_t Yc, Double_t Zc) |
5443e65e |
1954 | { |
1955 | // |
1956 | // Sets hole in the layer |
1957 | // |
5443e65e |
1958 | fHole = kTRUE; |
1959 | fHoleZc = Zc; |
1960 | fHoleZmax = Zmax; |
1961 | fHoleYc = Yc; |
1962 | fHoleYmax = Ymax; |
1963 | fHoleRho = rho; |
029cd327 |
1964 | fHoleX0 = radLength; |
5443e65e |
1965 | } |
1966 | |
46d29e70 |
1967 | |
5443e65e |
1968 | //_______________________________________________________ |
1969 | AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) |
1970 | { |
1971 | // |
1972 | // AliTRDtrackingSector Constructor |
1973 | // |
1974 | |
1975 | fGeom = geo; |
1976 | fPar = par; |
1977 | fGeomSector = gs; |
1978 | fTzeroShift = 0.13; |
1979 | fN = 0; |
3c625a9b |
1980 | // |
1981 | // get holes description from geometry |
1982 | Bool_t holes[AliTRDgeometry::kNcham]; |
1983 | //printf("sector\t%d\t",gs); |
1984 | for (Int_t icham=0; icham<AliTRDgeometry::kNcham;icham++){ |
1985 | holes[icham] = fGeom->IsHole(0,icham,gs); |
1986 | //printf("%d",holes[icham]); |
1987 | } |
1988 | //printf("\n"); |
1989 | |
029cd327 |
1990 | for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; |
5443e65e |
1991 | |
1992 | |
1993 | AliTRDpropagationLayer* ppl; |
1994 | |
029cd327 |
1995 | Double_t x, xin, xout, dx, rho, radLength; |
5443e65e |
1996 | Int_t steps; |
46d29e70 |
1997 | |
5443e65e |
1998 | // set time bins in the gas of the TPC |
46d29e70 |
1999 | |
5443e65e |
2000 | xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; |
029cd327 |
2001 | rho = 0.9e-3; radLength = 28.94; |
5443e65e |
2002 | |
2003 | for(Int_t i=0; i<steps; i++) { |
2004 | x = xin + i*dx + dx/2; |
029cd327 |
2005 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2006 | InsertLayer(ppl); |
46d29e70 |
2007 | } |
2008 | |
5443e65e |
2009 | // set time bins in the outer field cage vessel |
46d29e70 |
2010 | |
029cd327 |
2011 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2012 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2013 | InsertLayer(ppl); |
46d29e70 |
2014 | |
029cd327 |
2015 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2016 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2017 | InsertLayer(ppl); |
2018 | |
029cd327 |
2019 | dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e |
2020 | steps = 5; dx = (xout - xin)/steps; |
2021 | for(Int_t i=0; i<steps; i++) { |
2022 | x = xin + i*dx + dx/2; |
029cd327 |
2023 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2024 | InsertLayer(ppl); |
2025 | } |
2026 | |
029cd327 |
2027 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2028 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2029 | InsertLayer(ppl); |
2030 | |
029cd327 |
2031 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2032 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2033 | InsertLayer(ppl); |
0a29d0f1 |
2034 | |
5443e65e |
2035 | |
2036 | // set time bins in CO2 |
2037 | |
2038 | xin = xout; xout = 275.0; |
2039 | steps = 50; dx = (xout - xin)/steps; |
029cd327 |
2040 | rho = 1.977e-3; radLength = 36.2; |
5443e65e |
2041 | |
2042 | for(Int_t i=0; i<steps; i++) { |
2043 | x = xin + i*dx + dx/2; |
029cd327 |
2044 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2045 | InsertLayer(ppl); |
2046 | } |
2047 | |
2048 | // set time bins in the outer containment vessel |
2049 | |
029cd327 |
2050 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2051 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2052 | InsertLayer(ppl); |
2053 | |
029cd327 |
2054 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2055 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2056 | InsertLayer(ppl); |
2057 | |
029cd327 |
2058 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2059 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2060 | InsertLayer(ppl); |
2061 | |
029cd327 |
2062 | dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e |
2063 | steps = 10; dx = (xout - xin)/steps; |
2064 | for(Int_t i=0; i<steps; i++) { |
2065 | x = xin + i*dx + dx/2; |
029cd327 |
2066 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2067 | InsertLayer(ppl); |
2068 | } |
2069 | |
029cd327 |
2070 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2071 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2072 | InsertLayer(ppl); |
2073 | |
029cd327 |
2074 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2075 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2076 | InsertLayer(ppl); |
2077 | |
029cd327 |
2078 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2079 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
5443e65e |
2080 | InsertLayer(ppl); |
2081 | |
2082 | Double_t xtrd = (Double_t) fGeom->Rmin(); |
2083 | |
2084 | // add layers between TPC and TRD (Air temporarily) |
2085 | xin = xout; xout = xtrd; |
2086 | steps = 50; dx = (xout - xin)/steps; |
029cd327 |
2087 | rho = 1.2e-3; radLength = 36.66; |
5443e65e |
2088 | |
2089 | for(Int_t i=0; i<steps; i++) { |
2090 | x = xin + i*dx + dx/2; |
029cd327 |
2091 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2092 | InsertLayer(ppl); |
2093 | } |
2094 | |
2095 | |
3c625a9b |
2096 | // Double_t alpha=AliTRDgeometry::GetAlpha(); |
5443e65e |
2097 | |
2098 | // add layers for each of the planes |
2099 | |
2100 | Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell |
2101 | Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes |
2102 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
2103 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
2104 | Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator |
2105 | Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; |
2106 | Double_t dxPlane = dxTEC + dxSpace; |
2107 | |
029cd327 |
2108 | Int_t tb, tbIndex; |
2109 | const Int_t kNchambers = AliTRDgeometry::Ncham(); |
3c625a9b |
2110 | Double_t ymax = 0; |
2111 | //, holeYmax = 0; |
2112 | Double_t ymaxsensitive=0; |
029cd327 |
2113 | Double_t *zc = new Double_t[kNchambers]; |
2114 | Double_t *zmax = new Double_t[kNchambers]; |
3c625a9b |
2115 | Double_t *zmaxsensitive = new Double_t[kNchambers]; |
2116 | // Double_t holeZmax = 1000.; // the whole sector is missing |
5443e65e |
2117 | |
5443e65e |
2118 | for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
3c625a9b |
2119 | // |
5443e65e |
2120 | // Radiator |
2121 | xin = xtrd + plane * dxPlane; xout = xin + dxRad; |
029cd327 |
2122 | steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e |
2123 | for(Int_t i=0; i<steps; i++) { |
2124 | x = xin + i*dx + dx/2; |
3c625a9b |
2125 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2126 | InsertLayer(ppl); |
2127 | } |
2128 | |
3c625a9b |
2129 | ymax = fGeom->GetChamberWidth(plane)/2.; |
2130 | ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; |
2131 | |
029cd327 |
2132 | for(Int_t ch = 0; ch < kNchambers; ch++) { |
2133 | zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; |
5443e65e |
2134 | Float_t pad = fPar->GetRowPadSize(plane,ch,0); |
2135 | Float_t row0 = fPar->GetRow0(plane,ch,0); |
2136 | Int_t nPads = fPar->GetRowMax(plane,ch,0); |
857b3eb0 |
2137 | zmaxsensitive[ch] = Float_t(nPads)*pad/2.; |
3c625a9b |
2138 | // zc[ch] = (pad * nPads)/2 + row0 - pad/2; |
2139 | zc[ch] = (pad * nPads)/2 + row0; |
2140 | //zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW(); |
2141 | |
5443e65e |
2142 | } |
2143 | |
2144 | dx = fPar->GetTimeBinSize(); |
029cd327 |
2145 | rho = 0.00295 * 0.85; radLength = 11.0; |
5443e65e |
2146 | |
2147 | Double_t x0 = (Double_t) fPar->GetTime0(plane); |
2148 | Double_t xbottom = x0 - dxDrift; |
2149 | Double_t xtop = x0 + dxAmp; |
3c625a9b |
2150 | // |
5443e65e |
2151 | // Amplification region |
5443e65e |
2152 | steps = (Int_t) (dxAmp/dx); |
2153 | |
2154 | for(tb = 0; tb < steps; tb++) { |
2155 | x = x0 + tb * dx + dx/2; |
029cd327 |
2156 | tbIndex = CookTimeBinIndex(plane, -tb-1); |
2157 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b |
2158 | ppl->SetYmax(ymax,ymaxsensitive); |
2159 | ppl->SetZ(zc, zmax, zmaxsensitive); |
2160 | ppl->SetHoles(holes); |
5443e65e |
2161 | InsertLayer(ppl); |
2162 | } |
029cd327 |
2163 | tbIndex = CookTimeBinIndex(plane, -steps); |
5443e65e |
2164 | x = (x + dx/2 + xtop)/2; |
2165 | dx = 2*(xtop-x); |
029cd327 |
2166 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b |
2167 | ppl->SetYmax(ymax,ymaxsensitive); |
2168 | ppl->SetZ(zc, zmax,zmaxsensitive); |
2169 | ppl->SetHoles(holes); |
5443e65e |
2170 | InsertLayer(ppl); |
2171 | |
2172 | // Drift region |
2173 | dx = fPar->GetTimeBinSize(); |
2174 | steps = (Int_t) (dxDrift/dx); |
2175 | |
2176 | for(tb = 0; tb < steps; tb++) { |
2177 | x = x0 - tb * dx - dx/2; |
029cd327 |
2178 | tbIndex = CookTimeBinIndex(plane, tb); |
5443e65e |
2179 | |
029cd327 |
2180 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b |
2181 | ppl->SetYmax(ymax,ymaxsensitive); |
2182 | ppl->SetZ(zc, zmax, zmaxsensitive); |
2183 | ppl->SetHoles(holes); |
5443e65e |
2184 | InsertLayer(ppl); |
2185 | } |
029cd327 |
2186 | tbIndex = CookTimeBinIndex(plane, steps); |
5443e65e |
2187 | x = (x - dx/2 + xbottom)/2; |
2188 | dx = 2*(x-xbottom); |
029cd327 |
2189 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b |
2190 | ppl->SetYmax(ymax,ymaxsensitive); |
2191 | ppl->SetZ(zc, zmax, zmaxsensitive); |
2192 | ppl->SetHoles(holes); |
5443e65e |
2193 | InsertLayer(ppl); |
2194 | |
2195 | // Pad Plane |
029cd327 |
2196 | xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; |
2197 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); |
3c625a9b |
2198 | ppl->SetYmax(ymax,ymaxsensitive); |
2199 | ppl->SetZ(zc, zmax,zmax); |
2200 | ppl->SetHoles(holes); |
5443e65e |
2201 | InsertLayer(ppl); |
2202 | |
2203 | // Rohacell |
2204 | xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; |
029cd327 |
2205 | steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e |
2206 | for(Int_t i=0; i<steps; i++) { |
2207 | x = xin + i*dx + dx/2; |
029cd327 |
2208 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
3c625a9b |
2209 | ppl->SetYmax(ymax,ymaxsensitive); |
2210 | ppl->SetZ(zc, zmax,zmax); |
2211 | ppl->SetHoles(holes); |
5443e65e |
2212 | InsertLayer(ppl); |
2213 | } |
2214 | |
2215 | // Space between the chambers, air |
2216 | xin = xout; xout = xtrd + (plane + 1) * dxPlane; |
029cd327 |
2217 | steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e |
2218 | for(Int_t i=0; i<steps; i++) { |
2219 | x = xin + i*dx + dx/2; |
029cd327 |
2220 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2221 | InsertLayer(ppl); |
2222 | } |
2223 | } |
2224 | |
2225 | // Space between the TRD and RICH |
2226 | Double_t xRICH = 500.; |
2227 | xin = xout; xout = xRICH; |
029cd327 |
2228 | steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e |
2229 | for(Int_t i=0; i<steps; i++) { |
2230 | x = xin + i*dx + dx/2; |
029cd327 |
2231 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e |
2232 | InsertLayer(ppl); |
2233 | } |
2234 | |
2235 | MapTimeBinLayers(); |
029cd327 |
2236 | delete [] zc; |
2237 | delete [] zmax; |
5443e65e |
2238 | |
2239 | } |
2240 | |
2241 | //______________________________________________________ |
2242 | |
029cd327 |
2243 | Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t localTB) const |
5443e65e |
2244 | { |
2245 | // |
2246 | // depending on the digitization parameters calculates "global" |
029cd327 |
2247 | // time bin index for timebin <localTB> in plane <plane> |
5443e65e |
2248 | // |
2249 | |
2250 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
2251 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region |
2252 | Double_t dx = (Double_t) fPar->GetTimeBinSize(); |
2253 | |
2254 | Int_t tbAmp = fPar->GetTimeBefore(); |
2255 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); |
b3a5a838 |
2256 | if(kTRUE) maxAmp = 0; // intentional until we change parameter class |
5443e65e |
2257 | Int_t tbDrift = fPar->GetTimeMax(); |
2258 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); |
2259 | |
029cd327 |
2260 | Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); |
5443e65e |
2261 | |
029cd327 |
2262 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); |
5443e65e |
2263 | |
029cd327 |
2264 | if((localTB < 0) && |
2265 | (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; |
2266 | if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; |
5443e65e |
2267 | |
2268 | return gtb; |
2269 | |
2270 | |
2271 | } |
2272 | |
2273 | //______________________________________________________ |
2274 | |
2275 | void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() |
2276 | { |
2277 | // |
2278 | // For all sensitive time bins sets corresponding layer index |
2279 | // in the array fTimeBins |
2280 | // |
2281 | |
2282 | Int_t index; |
2283 | |
2284 | for(Int_t i = 0; i < fN; i++) { |
2285 | index = fLayers[i]->GetTimeBinIndex(); |
2286 | |
2287 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); |
2288 | |
2289 | if(index < 0) continue; |
029cd327 |
2290 | if(index >= (Int_t) kMaxTimeBinIndex) { |
5443e65e |
2291 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); |
2292 | printf(" index %d exceeds allowed maximum of %d!\n", |
029cd327 |
2293 | index, kMaxTimeBinIndex-1); |
5443e65e |
2294 | continue; |
2295 | } |
2296 | fTimeBinIndex[index] = i; |
2297 | } |
2298 | |
2299 | Double_t x1, dx1, x2, dx2, gap; |
2300 | |
2301 | for(Int_t i = 0; i < fN-1; i++) { |
2302 | x1 = fLayers[i]->GetX(); |
2303 | dx1 = fLayers[i]->GetdX(); |
2304 | x2 = fLayers[i+1]->GetX(); |
2305 | dx2 = fLayers[i+1]->GetdX(); |
2306 | gap = (x2 - dx2/2) - (x1 + dx1/2); |
2307 | if(gap < -0.01) { |
2308 | printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); |
2309 | printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); |
2310 | } |
2311 | if(gap > 0.01) { |
2312 | printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); |
2313 | printf(" (%f - %f) - (%f + %f) = %f\n", |
a9814c09 |
2314 | x2, dx2/2, x1, dx1, gap); |
5443e65e |
2315 | } |
2316 | } |
2317 | } |
2318 | |
2319 | |
2320 | //______________________________________________________ |
2321 | |
2322 | |
2323 | Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const |
2324 | { |
2325 | // |
2326 | // Returns the number of time bin which in radial position is closest to <x> |
2327 | // |
2328 | |
2329 | if(x >= fLayers[fN-1]->GetX()) return fN-1; |
2330 | if(x <= fLayers[0]->GetX()) return 0; |
2331 | |
2332 | Int_t b=0, e=fN-1, m=(b+e)/2; |
2333 | for (; b<e; m=(b+e)/2) { |
2334 | if (x > fLayers[m]->GetX()) b=m+1; |
2335 | else e=m; |
2336 | } |
2337 | if(TMath::Abs(x - fLayers[m]->GetX()) > |
2338 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; |
2339 | else return m; |
2340 | |
2341 | } |
2342 | |
2343 | //______________________________________________________ |
2344 | |
2345 | Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const |
2346 | { |
2347 | // |
2348 | // Returns number of the innermost SENSITIVE propagation layer |
2349 | // |
2350 | |
2351 | return GetLayerNumber(0); |
2352 | } |
2353 | |
2354 | //______________________________________________________ |
2355 | |
2356 | Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const |
2357 | { |
2358 | // |
2359 | // Returns number of the outermost SENSITIVE time bin |
2360 | // |
2361 | |
2362 | return GetLayerNumber(GetNumberOfTimeBins() - 1); |
46d29e70 |
2363 | } |
2364 | |
5443e65e |
2365 | //______________________________________________________ |
2366 | |
2367 | Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const |
2368 | { |
2369 | // |
2370 | // Returns number of SENSITIVE time bins |
2371 | // |
2372 | |
2373 | Int_t tb, layer; |
029cd327 |
2374 | for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { |
5443e65e |
2375 | layer = GetLayerNumber(tb); |
2376 | if(layer>=0) break; |
2377 | } |
2378 | return tb+1; |
2379 | } |
2380 | |
2381 | //______________________________________________________ |
2382 | |
2383 | void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) |
2384 | { |
2385 | // |
2386 | // Insert layer <pl> in fLayers array. |
2387 | // Layers are sorted according to X coordinate. |
2388 | |
029cd327 |
2389 | if ( fN == ((Int_t) kMaxLayersPerSector)) { |
5443e65e |
2390 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); |
2391 | return; |
2392 | } |
2393 | if (fN==0) {fLayers[fN++] = pl; return;} |
2394 | Int_t i=Find(pl->GetX()); |
2395 | |
2396 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); |
2397 | fLayers[i]=pl; fN++; |
2398 | |
2399 | } |
2400 | |
2401 | //______________________________________________________ |
2402 | |
2403 | Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const |
2404 | { |
2405 | // |
2406 | // Returns index of the propagation layer nearest to X |
2407 | // |
2408 | |
2409 | if (x <= fLayers[0]->GetX()) return 0; |
2410 | if (x > fLayers[fN-1]->GetX()) return fN; |
2411 | Int_t b=0, e=fN-1, m=(b+e)/2; |
2412 | for (; b<e; m=(b+e)/2) { |
2413 | if (x > fLayers[m]->GetX()) b=m+1; |
2414 | else e=m; |
2415 | } |
2416 | return m; |
2417 | } |
2418 | |
3c625a9b |
2419 | //______________________________________________________ |
2420 | void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) |
2421 | { |
2422 | // |
2423 | // set centers and the width of sectors |
2424 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ |
2425 | fZc[icham] = center[icham]; |
2426 | fZmax[icham] = w[icham]; |
2427 | fZmaxSensitive[icham] = wsensitive[icham]; |
2428 | // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); |
2429 | } |
2430 | } |
5443e65e |
2431 | //______________________________________________________ |
2432 | |
3c625a9b |
2433 | void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) |
2434 | { |
2435 | // |
2436 | // set centers and the width of sectors |
2437 | fHole = kFALSE; |
2438 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ |
2439 | fIsHole[icham] = holes[icham]; |
2440 | if (holes[icham]) fHole = kTRUE; |
2441 | } |
2442 | } |
2443 | |
2444 | |
2445 | |
5443e65e |
2446 | void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( |
029cd327 |
2447 | Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, |
a9814c09 |
2448 | Bool_t &lookForCluster) const |
5443e65e |
2449 | { |
2450 | // |
029cd327 |
2451 | // Returns radial step <dx>, density <rho>, rad. length <radLength>, |
5443e65e |
2452 | // and sensitivity <lookForCluster> in point <y,z> |
2453 | // |
2454 | |
2455 | dx = fdX; |
2456 | rho = fRho; |
029cd327 |
2457 | radLength = fX0; |
5443e65e |
2458 | lookForCluster = kFALSE; |
3c625a9b |
2459 | // |
2460 | // check dead regions in sensitive volume |
5443e65e |
2461 | if(fTimeBinIndex >= 0) { |
3c625a9b |
2462 | // |
2463 | Int_t zone=-1; |
029cd327 |
2464 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { |
3c625a9b |
2465 | if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){ |
2466 | zone = ch; |
2467 | lookForCluster = !(fIsHole[zone]); |
2468 | if(TMath::Abs(y) > fYmaxSensitive){ |
2469 | lookForCluster = kFALSE; |
2470 | } |
2471 | if (fIsHole[zone]) { |
2472 | //if hole |
2473 | rho = 1.29e-3; |
2474 | radLength = 36.66; |
2475 | } |
2476 | } |
5443e65e |
2477 | } |
3c625a9b |
2478 | return; |
5443e65e |
2479 | } |
3c625a9b |
2480 | // |
2481 | // |
5443e65e |
2482 | // check hole |
3c625a9b |
2483 | if (fHole==kFALSE) return; |
2484 | // |
2485 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { |
2486 | if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){ |
2487 | if (fIsHole[ch]) { |
2488 | //if hole |
2489 | rho = 1.29e-3; |
2490 | radLength = 36.66; |
2491 | } |
2492 | } |
2493 | } |
5443e65e |
2494 | return; |
2495 | } |
2496 | |
3c625a9b |
2497 | Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const |
2498 | { |
2499 | // |
2500 | // |
2501 | if (fTimeBinIndex < 0) return -20; //unknown |
2502 | Int_t zone=-10; // dead zone |
2503 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { |
2504 | if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) |
2505 | zone = ch; |
2506 | } |
2507 | return zone; |
2508 | } |
2509 | |
2510 | |
5443e65e |
2511 | //______________________________________________________ |
2512 | |
2513 | void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, |
a9814c09 |
2514 | UInt_t index) { |
5443e65e |
2515 | |
2516 | // Insert cluster in cluster array. |
2517 | // Clusters are sorted according to Y coordinate. |
2518 | |
2519 | if(fTimeBinIndex < 0) { |
2520 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); |
2521 | return; |
2522 | } |
2523 | |
029cd327 |
2524 | if (fN== (Int_t) kMaxClusterPerTimeBin) { |
5443e65e |
2525 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); |
2526 | return; |
2527 | } |
2528 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} |
2529 | Int_t i=Find(c->GetY()); |
2530 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); |
2531 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); |
2532 | fIndex[i]=index; fClusters[i]=c; fN++; |
2533 | } |
2534 | |
2535 | //______________________________________________________ |
2536 | |
2537 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { |
2538 | |
2539 | // Returns index of the cluster nearest in Y |
2540 | |
2541 | if (y <= fClusters[0]->GetY()) return 0; |
2542 | if (y > fClusters[fN-1]->GetY()) return fN; |
2543 | Int_t b=0, e=fN-1, m=(b+e)/2; |
2544 | for (; b<e; m=(b+e)/2) { |
2545 | if (y > fClusters[m]->GetY()) b=m+1; |
2546 | else e=m; |
2547 | } |
2548 | return m; |
2549 | } |
2550 | |
fd621f36 |
2551 | //--------------------------------------------------------- |
5443e65e |
2552 | |
fd621f36 |
2553 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { |
2554 | // |
2555 | // Returns correction factor for tilted pads geometry |
2556 | // |
5443e65e |
2557 | |
fd621f36 |
2558 | Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); |
2559 | Int_t det = c->GetDetector(); |
2560 | Int_t plane = fGeom->GetPlane(det); |
b3a5a838 |
2561 | |
c5a8e3df |
2562 | //if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; |
2563 | if((plane == 0) || (plane == 2) || (plane == 4)) h01=-h01; |
b8dc2353 |
2564 | |
2565 | if(fNoTilt) h01 = 0; |
fd621f36 |
2566 | |
2567 | return h01; |
2568 | } |
5443e65e |
2569 | |
c630aafd |
2570 | |
2571 | |
2572 | |
2573 | |
2574 | |