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46d29e70 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
0fa7dfa7 | 16 | /* $Id$ */ |
bbf92647 | 17 | |
029cd327 | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // The standard TRD tracker // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
a2cb5b3d | 24 | #include <Riostream.h> |
46d29e70 | 25 | #include <TFile.h> |
46d29e70 | 26 | #include <TBranch.h> |
5443e65e | 27 | #include <TTree.h> |
c630aafd | 28 | #include <TObjArray.h> |
46d29e70 | 29 | |
46d29e70 | 30 | #include "AliTRDgeometry.h" |
5443e65e | 31 | #include "AliTRDparameter.h" |
a5cadd36 | 32 | #include "AliTRDpadPlane.h" |
7ad19338 | 33 | #include "AliTRDgeometryDetail.h" |
46d29e70 | 34 | #include "AliTRDcluster.h" |
35 | #include "AliTRDtrack.h" | |
b7a0917f | 36 | #include "AliESD.h" |
46d29e70 | 37 | |
7ad19338 | 38 | #include "TTreeStream.h" |
39 | #include "TGraph.h" | |
46d29e70 | 40 | #include "AliTRDtracker.h" |
7ad19338 | 41 | // |
46d29e70 | 42 | |
43 | ClassImp(AliTRDtracker) | |
44 | ||
029cd327 | 45 | const Float_t AliTRDtracker::fgkSeedDepth = 0.5; |
46 | const Float_t AliTRDtracker::fgkSeedStep = 0.10; | |
47 | const Float_t AliTRDtracker::fgkSeedGap = 0.25; | |
5443e65e | 48 | |
029cd327 | 49 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; |
50 | const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; | |
51 | const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; | |
52 | const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; | |
53 | const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; | |
a819a5f7 | 54 | |
029cd327 | 55 | const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; |
56 | const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; | |
57 | const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; | |
bbf92647 | 58 | |
029cd327 | 59 | const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; |
bbf92647 | 60 | |
029cd327 | 61 | const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; |
62 | const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; | |
bbf92647 | 63 | |
029cd327 | 64 | const Float_t AliTRDtracker::fgkSkipDepth = 0.3; |
65 | const Float_t AliTRDtracker::fgkLabelFraction = 0.8; | |
66 | const Float_t AliTRDtracker::fgkWideRoad = 20.; | |
5443e65e | 67 | |
029cd327 | 68 | const Double_t AliTRDtracker::fgkMaxChi2 = 12.; |
a819a5f7 | 69 | |
7ad19338 | 70 | // const Double_t AliTRDtracker::fgkOffset = -0.012; |
71 | // const Double_t AliTRDtracker::fgkOffsetX = 0.35; | |
72 | // const Double_t AliTRDtracker::fgkCoef = 0.00; | |
73 | // const Double_t AliTRDtracker::fgkMean = 8.; | |
74 | // const Double_t AliTRDtracker::fgkDriftCorrection = 1.07; | |
75 | // const Double_t AliTRDtracker::fgkExB = 0.072; | |
76 | ||
77 | const Double_t AliTRDtracker::fgkOffset = -0.015; | |
78 | const Double_t AliTRDtracker::fgkOffsetX = 0.26; // "time offset" | |
79 | const Double_t AliTRDtracker::fgkCoef = 0.0096; // angular shift | |
80 | const Double_t AliTRDtracker::fgkMean = 0.; | |
81 | const Double_t AliTRDtracker::fgkDriftCorrection = 1.04; // drift coefficient correction | |
82 | const Double_t AliTRDtracker::fgkExB = 0.072; // ExB angle - for error parameterization | |
83 | ||
84 | ||
85 | // poscorrection = fgkCoef*(GetLocalTimeBin() - fgkMean)+fgkOffset; | |
86 | ||
029cd327 | 87 | const Int_t AliTRDtracker::fgkFirstPlane = 5; |
88 | const Int_t AliTRDtracker::fgkLastPlane = 17; | |
9c9d2487 | 89 | |
89f05372 | 90 | //____________________________________________________________________ |
91 | AliTRDtracker::AliTRDtracker():AliTracker(), | |
92 | fGeom(0), | |
93 | fPar(0), | |
94 | fNclusters(0), | |
95 | fClusters(0), | |
96 | fNseeds(0), | |
97 | fSeeds(0), | |
98 | fNtracks(0), | |
99 | fTracks(0), | |
100 | fSY2corr(0), | |
101 | fSZ2corr(0), | |
102 | fTimeBinsPerPlane(0), | |
103 | fMaxGap(0), | |
104 | fVocal(kFALSE), | |
105 | fAddTRDseeds(kFALSE), | |
106 | fNoTilt(kFALSE) | |
107 | { | |
b7a0917f | 108 | // Default constructor |
109 | ||
89f05372 | 110 | for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0; |
111 | for(Int_t j=0;j<5;j++) | |
112 | for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE; | |
7ad19338 | 113 | fDebugStreamer = 0; |
89f05372 | 114 | } |
46d29e70 | 115 | //____________________________________________________________________ |
c630aafd | 116 | AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker() |
46d29e70 | 117 | { |
5443e65e | 118 | // |
119 | // Main constructor | |
120 | // | |
46d29e70 | 121 | |
c630aafd | 122 | //Float_t fTzero = 0; |
b8dc2353 | 123 | |
5443e65e | 124 | fAddTRDseeds = kFALSE; |
5443e65e | 125 | fGeom = NULL; |
b8dc2353 | 126 | fNoTilt = kFALSE; |
5443e65e | 127 | |
128 | TDirectory *savedir=gDirectory; | |
129 | TFile *in=(TFile*)geomfile; | |
130 | if (!in->IsOpen()) { | |
131 | printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); | |
132 | printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); | |
133 | } | |
134 | else { | |
135 | in->cd(); | |
c630aafd | 136 | // in->ls(); |
5443e65e | 137 | fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); |
138 | fPar = (AliTRDparameter*) in->Get("TRDparameter"); | |
c630aafd | 139 | // fGeom->Dump(); |
5443e65e | 140 | } |
46d29e70 | 141 | |
5443e65e | 142 | if(fGeom) { |
143 | // fTzero = geo->GetT0(); | |
7c1698cb | 144 | // printf("Found geometry version %d on file \n", fGeom->IsVersion()); |
5443e65e | 145 | } |
146 | else { | |
c630aafd | 147 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); |
3c625a9b | 148 | //printf("The DETAIL TRD geometry will be used\n"); |
149 | //fGeom = new AliTRDgeometryDetail(); | |
7ad19338 | 150 | fGeom = new AliTRDgeometryDetail(); |
3c625a9b | 151 | fGeom->SetPHOShole(); |
152 | fGeom->SetRICHhole(); | |
c630aafd | 153 | } |
154 | ||
155 | if (!fPar) { | |
156 | printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); | |
157 | printf("The DEFAULT TRD parameter will be used\n"); | |
7ad19338 | 158 | fPar = new AliTRDparameter("Pica","Vyjebana"); |
5443e65e | 159 | } |
7ad19338 | 160 | fPar = new AliTRDparameter("Pica","Vyjebana"); |
598156ef | 161 | fPar->Init(); |
5443e65e | 162 | |
163 | savedir->cd(); | |
46d29e70 | 164 | |
7ad19338 | 165 | |
5443e65e | 166 | // fGeom->SetT0(fTzero); |
0a29d0f1 | 167 | |
46d29e70 | 168 | fNclusters = 0; |
169 | fClusters = new TObjArray(2000); | |
170 | fNseeds = 0; | |
5443e65e | 171 | fSeeds = new TObjArray(2000); |
46d29e70 | 172 | fNtracks = 0; |
5443e65e | 173 | fTracks = new TObjArray(1000); |
a819a5f7 | 174 | |
029cd327 | 175 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
176 | Int_t trS = CookSectorIndex(geomS); | |
177 | fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); | |
3c625a9b | 178 | for (Int_t icham=0;icham<AliTRDgeometry::kNcham; icham++){ |
179 | fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS); | |
180 | } | |
5443e65e | 181 | } |
a5cadd36 | 182 | AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0); |
7ad19338 | 183 | Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); |
184 | // Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); | |
029cd327 | 185 | if(tiltAngle < 0.1) { |
b8dc2353 | 186 | fNoTilt = kTRUE; |
187 | } | |
188 | ||
189 | fSY2corr = 0.2; | |
190 | fSZ2corr = 120.; | |
191 | ||
029cd327 | 192 | if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; |
b8dc2353 | 193 | |
bbf92647 | 194 | |
5443e65e | 195 | // calculate max gap on track |
a819a5f7 | 196 | |
5443e65e | 197 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region |
198 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
a819a5f7 | 199 | |
7ad19338 | 200 | Double_t dx = fgkDriftCorrection*(Double_t) fPar->GetDriftVelocity() |
ccb4315c | 201 | / fPar->GetSamplingFrequency(); |
7ad19338 | 202 | |
5443e65e | 203 | Int_t tbAmp = fPar->GetTimeBefore(); |
204 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 205 | if(kTRUE) maxAmp = 0; // intentional until we change the parameter class |
5443e65e | 206 | Int_t tbDrift = fPar->GetTimeMax(); |
207 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
a819a5f7 | 208 | |
5443e65e | 209 | tbDrift = TMath::Min(tbDrift,maxDrift); |
210 | tbAmp = TMath::Min(tbAmp,maxAmp); | |
46d29e70 | 211 | |
5443e65e | 212 | fTimeBinsPerPlane = tbAmp + tbDrift; |
029cd327 | 213 | fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); |
46d29e70 | 214 | |
5443e65e | 215 | fVocal = kFALSE; |
7ad19338 | 216 | |
217 | fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); | |
0a29d0f1 | 218 | |
9c9d2487 | 219 | savedir->cd(); |
5443e65e | 220 | } |
46d29e70 | 221 | |
5443e65e | 222 | //___________________________________________________________________ |
223 | AliTRDtracker::~AliTRDtracker() | |
46d29e70 | 224 | { |
029cd327 | 225 | // |
226 | // Destructor of AliTRDtracker | |
227 | // | |
228 | ||
89f05372 | 229 | if (fClusters) { |
230 | fClusters->Delete(); | |
231 | delete fClusters; | |
232 | } | |
233 | if (fTracks) { | |
234 | fTracks->Delete(); | |
235 | delete fTracks; | |
236 | } | |
237 | if (fSeeds) { | |
238 | fSeeds->Delete(); | |
239 | delete fSeeds; | |
240 | } | |
5443e65e | 241 | delete fGeom; |
242 | delete fPar; | |
0a29d0f1 | 243 | |
029cd327 | 244 | for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { |
245 | delete fTrSec[geomS]; | |
5443e65e | 246 | } |
7ad19338 | 247 | if (fDebugStreamer) { |
248 | //fDebugStreamer->Close(); | |
249 | delete fDebugStreamer; | |
250 | } | |
5443e65e | 251 | } |
46d29e70 | 252 | |
9c9d2487 | 253 | //_____________________________________________________________________ |
254 | ||
9c9d2487 | 255 | Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { |
256 | // | |
257 | // Rotates the track when necessary | |
258 | // | |
259 | ||
260 | Double_t alpha = AliTRDgeometry::GetAlpha(); | |
261 | Double_t y = track->GetY(); | |
262 | Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); | |
263 | ||
c630aafd | 264 | //Int_t ns = AliTRDgeometry::kNsect; |
9c9d2487 | 265 | //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; |
266 | ||
267 | if (y > ymax) { | |
268 | //s = (s+1) % ns; | |
269 | if (!track->Rotate(alpha)) return kFALSE; | |
270 | } else if (y <-ymax) { | |
271 | //s = (s-1+ns) % ns; | |
272 | if (!track->Rotate(-alpha)) return kFALSE; | |
273 | } | |
274 | ||
275 | return kTRUE; | |
276 | } | |
277 | ||
46d29e70 | 278 | //_____________________________________________________________________ |
5443e65e | 279 | inline Double_t f1trd(Double_t x1,Double_t y1, |
a9814c09 | 280 | Double_t x2,Double_t y2, |
281 | Double_t x3,Double_t y3) | |
46d29e70 | 282 | { |
0a29d0f1 | 283 | // |
46d29e70 | 284 | // Initial approximation of the track curvature |
0a29d0f1 | 285 | // |
46d29e70 | 286 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); |
287 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
288 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
289 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
290 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
291 | ||
292 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
293 | ||
294 | return -xr*yr/sqrt(xr*xr+yr*yr); | |
295 | } | |
296 | ||
297 | //_____________________________________________________________________ | |
5443e65e | 298 | inline Double_t f2trd(Double_t x1,Double_t y1, |
a9814c09 | 299 | Double_t x2,Double_t y2, |
300 | Double_t x3,Double_t y3) | |
46d29e70 | 301 | { |
0a29d0f1 | 302 | // |
5443e65e | 303 | // Initial approximation of the track curvature times X coordinate |
304 | // of the center of curvature | |
0a29d0f1 | 305 | // |
46d29e70 | 306 | |
307 | Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); | |
308 | Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- | |
309 | (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); | |
310 | Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- | |
311 | (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); | |
312 | ||
313 | Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); | |
314 | ||
315 | return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); | |
316 | } | |
317 | ||
318 | //_____________________________________________________________________ | |
5443e65e | 319 | inline Double_t f3trd(Double_t x1,Double_t y1, |
a9814c09 | 320 | Double_t x2,Double_t y2, |
321 | Double_t z1,Double_t z2) | |
46d29e70 | 322 | { |
0a29d0f1 | 323 | // |
46d29e70 | 324 | // Initial approximation of the tangent of the track dip angle |
0a29d0f1 | 325 | // |
46d29e70 | 326 | |
327 | return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
328 | } | |
329 | ||
46e2d86c | 330 | |
7ad19338 | 331 | AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin, UInt_t &index){ |
46e2d86c | 332 | // |
333 | //try to find cluster in the backup list | |
334 | // | |
335 | AliTRDcluster * cl =0; | |
336 | UInt_t *indexes = track->GetBackupIndexes(); | |
337 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
338 | if (indexes[i]==0) break; | |
339 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
340 | if (!cli) break; | |
341 | if (cli->GetLocalTimeBin()!=timebin) continue; | |
342 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); | |
343 | if (iplane==plane) { | |
344 | cl = cli; | |
7ad19338 | 345 | index = indexes[i]; |
46e2d86c | 346 | break; |
347 | } | |
348 | } | |
349 | return cl; | |
350 | } | |
351 | ||
3c625a9b | 352 | |
353 | Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track){ | |
354 | // | |
355 | //return last updated plane | |
356 | Int_t lastplane=0; | |
357 | UInt_t *indexes = track->GetBackupIndexes(); | |
358 | for (UInt_t i=0;i<kMaxTimeBinIndex;i++){ | |
359 | AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]); | |
360 | if (!cli) break; | |
361 | Int_t iplane = fGeom->GetPlane(cli->GetDetector()); | |
362 | if (iplane>lastplane) { | |
363 | lastplane = iplane; | |
364 | } | |
365 | } | |
366 | return lastplane; | |
367 | } | |
c630aafd | 368 | //___________________________________________________________________ |
369 | Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) | |
370 | { | |
371 | // | |
372 | // Finds tracks within the TRD. The ESD event is expected to contain seeds | |
373 | // at the outer part of the TRD. The seeds | |
374 | // are found within the TRD if fAddTRDseeds is TRUE. | |
375 | // The tracks are propagated to the innermost time bin | |
376 | // of the TRD and the ESD event is updated | |
377 | // | |
378 | ||
379 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
029cd327 | 380 | Float_t foundMin = fgkMinClustersInTrack * timeBins; |
c630aafd | 381 | Int_t nseed = 0; |
382 | Int_t found = 0; | |
383 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
384 | ||
385 | Int_t n = event->GetNumberOfTracks(); | |
386 | for (Int_t i=0; i<n; i++) { | |
387 | AliESDtrack* seed=event->GetTrack(i); | |
388 | ULong_t status=seed->GetStatus(); | |
389 | if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; | |
390 | if ( (status & AliESDtrack::kTRDin) != 0 ) continue; | |
391 | nseed++; | |
7ad19338 | 392 | |
c630aafd | 393 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); |
46e2d86c | 394 | //seed2->ResetCovariance(); |
c630aafd | 395 | AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); |
396 | AliTRDtrack &t=*pt; | |
397 | FollowProlongation(t, innerTB); | |
398 | if (t.GetNumberOfClusters() >= foundMin) { | |
399 | UseClusters(&t); | |
029cd327 | 400 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 401 | // t.CookdEdx(); |
402 | } | |
403 | found++; | |
404 | // cout<<found<<'\r'; | |
405 | ||
406 | if(PropagateToTPC(t)) { | |
407 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDin); | |
408 | } | |
409 | delete seed2; | |
410 | delete pt; | |
411 | } | |
412 | ||
413 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
414 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
415 | ||
416 | // after tracks from loaded seeds are found and the corresponding | |
417 | // clusters are used, look for additional seeds from TRD | |
418 | ||
419 | if(fAddTRDseeds) { | |
420 | // Find tracks for the seeds in the TRD | |
421 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
422 | ||
029cd327 | 423 | Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); |
424 | Int_t gap = (Int_t) (timeBins * fgkSeedGap); | |
425 | Int_t step = (Int_t) (timeBins * fgkSeedStep); | |
c630aafd | 426 | |
427 | // make a first turn with tight cut on initial curvature | |
428 | for(Int_t turn = 1; turn <= 2; turn++) { | |
429 | if(turn == 2) { | |
029cd327 | 430 | nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); |
431 | step = (Int_t) (timeBins * (3*fgkSeedStep)); | |
c630aafd | 432 | } |
433 | for(Int_t i=0; i<nSteps; i++) { | |
434 | Int_t outer=timeBins-1-i*step; | |
435 | Int_t inner=outer-gap; | |
436 | ||
437 | nseed=fSeeds->GetEntriesFast(); | |
438 | ||
439 | MakeSeeds(inner, outer, turn); | |
440 | ||
441 | nseed=fSeeds->GetEntriesFast(); | |
7bed16a7 | 442 | // printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", |
443 | // turn, i, nseed); | |
c630aafd | 444 | |
445 | for (Int_t i=0; i<nseed; i++) { | |
446 | AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt; | |
447 | FollowProlongation(t,innerTB); | |
448 | if (t.GetNumberOfClusters() >= foundMin) { | |
449 | UseClusters(&t); | |
029cd327 | 450 | CookLabel(pt, 1-fgkLabelFraction); |
c630aafd | 451 | t.CookdEdx(); |
452 | found++; | |
453 | // cout<<found<<'\r'; | |
454 | if(PropagateToTPC(t)) { | |
455 | AliESDtrack track; | |
456 | track.UpdateTrackParams(pt,AliESDtrack::kTRDin); | |
457 | event->AddTrack(&track); | |
c5a8e3df | 458 | // track.SetTRDtrack(new AliTRDtrack(*pt)); |
c630aafd | 459 | } |
460 | } | |
461 | delete fSeeds->RemoveAt(i); | |
462 | fNseeds--; | |
463 | } | |
464 | } | |
465 | } | |
466 | } | |
467 | ||
468 | cout<<"Total number of found tracks: "<<found<<endl; | |
469 | ||
470 | return 0; | |
471 | } | |
5443e65e | 472 | |
c630aafd | 473 | |
5443e65e | 474 | |
c630aafd | 475 | //_____________________________________________________________________________ |
476 | Int_t AliTRDtracker::PropagateBack(AliESD* event) { | |
477 | // | |
478 | // Gets seeds from ESD event. The seeds are AliTPCtrack's found and | |
479 | // backpropagated by the TPC tracker. Each seed is first propagated | |
480 | // to the TRD, and then its prolongation is searched in the TRD. | |
481 | // If sufficiently long continuation of the track is found in the TRD | |
482 | // the track is updated, otherwise it's stored as originaly defined | |
483 | // by the TPC tracker. | |
484 | // | |
485 | ||
486 | Int_t found=0; | |
c5a8e3df | 487 | Float_t foundMin = 20; |
c630aafd | 488 | Int_t n = event->GetNumberOfTracks(); |
4f1c04d3 | 489 | // |
490 | //Sort tracks | |
491 | Float_t *quality =new Float_t[n]; | |
492 | Int_t *index =new Int_t[n]; | |
c630aafd | 493 | for (Int_t i=0; i<n; i++) { |
494 | AliESDtrack* seed=event->GetTrack(i); | |
4f1c04d3 | 495 | Double_t covariance[15]; |
496 | seed->GetExternalCovariance(covariance); | |
497 | quality[i] = covariance[0]+covariance[2]; | |
498 | } | |
499 | TMath::Sort(n,quality,index,kFALSE); | |
500 | // | |
501 | for (Int_t i=0; i<n; i++) { | |
502 | // AliESDtrack* seed=event->GetTrack(i); | |
503 | AliESDtrack* seed=event->GetTrack(index[i]); | |
504 | ||
c630aafd | 505 | ULong_t status=seed->GetStatus(); |
506 | if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; | |
507 | if ( (status & AliESDtrack::kTRDout) != 0 ) continue; | |
508 | ||
509 | Int_t lbl = seed->GetLabel(); | |
510 | AliTRDtrack *track = new AliTRDtrack(*seed); | |
511 | track->SetSeedLabel(lbl); | |
f4e9508c | 512 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); //make backup |
c630aafd | 513 | fNseeds++; |
4f1c04d3 | 514 | Float_t p4 = track->GetC(); |
7bed16a7 | 515 | // |
3c625a9b | 516 | Int_t expectedClr = FollowBackProlongation(*track); |
f4e9508c | 517 | /* |
518 | // only debug purpose | |
3c625a9b | 519 | if (track->GetNumberOfClusters()<expectedClr/3){ |
520 | AliTRDtrack *track1 = new AliTRDtrack(*seed); | |
521 | track1->SetSeedLabel(lbl); | |
522 | FollowBackProlongation(*track1); | |
523 | AliTRDtrack *track2= new AliTRDtrack(*seed); | |
524 | track->SetSeedLabel(lbl); | |
525 | FollowBackProlongation(*track2); | |
526 | delete track1; | |
527 | delete track2; | |
528 | } | |
f4e9508c | 529 | */ |
4f1c04d3 | 530 | if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)<0.2 || TMath::Abs(track->GetPt())>0.8 ) { |
531 | // | |
532 | //make backup for back propagation | |
533 | // | |
534 | Int_t foundClr = track->GetNumberOfClusters(); | |
535 | if (foundClr >= foundMin) { | |
536 | track->CookdEdx(); | |
537 | CookLabel(track, 1-fgkLabelFraction); | |
538 | if(track->GetChi2()/track->GetNumberOfClusters()<4) { // sign only gold tracks | |
539 | if (seed->GetKinkIndex(0)==0&&TMath::Abs(track->GetPt())<1.5 ) UseClusters(track); | |
540 | } | |
541 | Bool_t isGold = kFALSE; | |
542 | ||
543 | if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track | |
7ad19338 | 544 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); |
545 | if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
4f1c04d3 | 546 | isGold = kTRUE; |
547 | } | |
548 | if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track | |
7ad19338 | 549 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); |
550 | if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
f4e9508c | 551 | isGold = kTRUE; |
552 | } | |
4f1c04d3 | 553 | if (!isGold && track->GetBackupTrack()){ |
554 | if (track->GetBackupTrack()->GetNumberOfClusters()>foundMin&& | |
555 | (track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1))<7){ | |
556 | seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); | |
557 | isGold = kTRUE; | |
558 | } | |
559 | } | |
7ad19338 | 560 | if (track->StatusForTOF()>0 &&track->fNCross==0 && Float_t(track->fN)/Float_t(track->fNExpected)>0.4){ |
561 | seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); | |
562 | } | |
16d9fbba | 563 | } |
c630aafd | 564 | } |
4f1c04d3 | 565 | // |
566 | //Propagation to the TOF (I.Belikov) | |
7ad19338 | 567 | |
3c625a9b | 568 | if (track->GetStop()==kFALSE){ |
4f1c04d3 | 569 | |
b94f0a96 | 570 | Double_t xtof=371.; |
3c625a9b | 571 | Double_t c2=track->GetC()*xtof - track->GetEta(); |
4f1c04d3 | 572 | if (TMath::Abs(c2)>=0.99) { |
c5a8e3df | 573 | delete track; |
574 | continue; | |
575 | } | |
4f1c04d3 | 576 | Double_t xTOF0 = 365. ; |
16d9fbba | 577 | PropagateToOuterPlane(*track,xTOF0); |
4f1c04d3 | 578 | // |
579 | //energy losses taken to the account - check one more time | |
580 | c2=track->GetC()*xtof - track->GetEta(); | |
581 | if (TMath::Abs(c2)>=0.99) { | |
582 | delete track; | |
583 | continue; | |
584 | } | |
585 | ||
7bed16a7 | 586 | // |
3c625a9b | 587 | Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); |
588 | Double_t y=track->GetYat(xtof); | |
589 | if (y > ymax) { | |
7ac6fa52 | 590 | if (!track->Rotate(AliTRDgeometry::GetAlpha())) { |
591 | delete track; | |
7bed16a7 | 592 | continue; |
7ac6fa52 | 593 | } |
3c625a9b | 594 | } else if (y <-ymax) { |
7ac6fa52 | 595 | if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { |
596 | delete track; | |
7bed16a7 | 597 | continue; |
7ac6fa52 | 598 | } |
3c625a9b | 599 | } |
600 | ||
601 | if (track->PropagateTo(xtof)) { | |
eab5961e | 602 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); |
603 | for (Int_t i=0;i<kNPlane;i++) { | |
604 | seed->SetTRDsignals(track->GetPIDsignals(i),i); | |
605 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
606 | } | |
7ad19338 | 607 | // seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b | 608 | if (track->GetNumberOfClusters()>foundMin) found++; |
609 | } | |
610 | }else{ | |
611 | if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ | |
612 | seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
16d9fbba | 613 | //seed->SetStatus(AliESDtrack::kTRDStop); |
eab5961e | 614 | for (Int_t i=0;i<kNPlane;i++) { |
615 | seed->SetTRDsignals(track->GetPIDsignals(i),i); | |
616 | seed->SetTRDTimBin(track->GetPIDTimBin(i),i); | |
617 | } | |
7ad19338 | 618 | //seed->SetTRDtrack(new AliTRDtrack(*track)); |
3c625a9b | 619 | found++; |
620 | } | |
1e9bb598 | 621 | } |
7ad19338 | 622 | seed->SetTRDQuality(track->StatusForTOF()); |
623 | // | |
624 | // Debug part of tracking | |
625 | TTreeSRedirector& cstream = *fDebugStreamer; | |
626 | Int_t eventNr = event->GetEventNumber(); | |
627 | if (track->GetBackupTrack()){ | |
628 | cstream<<"Tracks"<< | |
629 | "EventNr="<<eventNr<< | |
630 | "ESD.="<<seed<< | |
631 | "trd.="<<track<< | |
632 | "trdback.="<<track->GetBackupTrack()<< | |
633 | "\n"; | |
634 | }else{ | |
635 | cstream<<"Tracks"<< | |
636 | "EventNr="<<eventNr<< | |
637 | "ESD.="<<seed<< | |
638 | "trd.="<<track<< | |
639 | "trdback.="<<track<< | |
640 | "\n"; | |
641 | } | |
d9b8978b | 642 | delete track; |
7ad19338 | 643 | // |
1e9bb598 | 644 | //End of propagation to the TOF |
3c625a9b | 645 | //if (foundClr>foundMin) |
646 | // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); | |
647 | ||
c630aafd | 648 | |
649 | } | |
650 | ||
651 | cerr<<"Number of seeds: "<<fNseeds<<endl; | |
652 | cerr<<"Number of back propagated TRD tracks: "<<found<<endl; | |
653 | ||
7ad19338 | 654 | // MakeSeedsMI(3,5); //new seeding |
655 | ||
656 | ||
1e9bb598 | 657 | fSeeds->Clear(); fNseeds=0; |
4f1c04d3 | 658 | delete [] index; |
659 | delete [] quality; | |
660 | ||
1e9bb598 | 661 | return 0; |
662 | ||
663 | } | |
664 | ||
665 | //_____________________________________________________________________________ | |
666 | Int_t AliTRDtracker::RefitInward(AliESD* event) | |
667 | { | |
668 | // | |
669 | // Refits tracks within the TRD. The ESD event is expected to contain seeds | |
670 | // at the outer part of the TRD. | |
671 | // The tracks are propagated to the innermost time bin | |
672 | // of the TRD and the ESD event is updated | |
673 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
674 | // | |
675 | ||
676 | Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); | |
677 | Float_t foundMin = fgkMinClustersInTrack * timeBins; | |
678 | Int_t nseed = 0; | |
679 | Int_t found = 0; | |
680 | Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); | |
4f1c04d3 | 681 | AliTRDtrack seed2; |
1e9bb598 | 682 | |
683 | Int_t n = event->GetNumberOfTracks(); | |
684 | for (Int_t i=0; i<n; i++) { | |
685 | AliESDtrack* seed=event->GetTrack(i); | |
4f1c04d3 | 686 | new(&seed2) AliTRDtrack(*seed); |
687 | if (seed2.GetX()<270){ | |
688 | seed->UpdateTrackParams(&seed2, AliESDtrack::kTRDbackup); // backup TPC track - only update | |
f4e9508c | 689 | continue; |
690 | } | |
691 | ||
1e9bb598 | 692 | ULong_t status=seed->GetStatus(); |
0dd7d129 | 693 | if ( (status & AliESDtrack::kTRDout ) == 0 ) { |
0dd7d129 | 694 | continue; |
695 | } | |
696 | if ( (status & AliESDtrack::kTRDin) != 0 ) { | |
0dd7d129 | 697 | continue; |
698 | } | |
f4e9508c | 699 | nseed++; |
7ad19338 | 700 | // if (1/seed2.Get1Pt()>1.5&& seed2.GetX()>260.) { |
701 | // Double_t oldx = seed2.GetX(); | |
702 | // seed2.PropagateTo(500.); | |
703 | // seed2.ResetCovariance(1.); | |
704 | // seed2.PropagateTo(oldx); | |
705 | // } | |
706 | // else{ | |
707 | // seed2.ResetCovariance(5.); | |
708 | // } | |
4f1c04d3 | 709 | |
710 | AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); | |
711 | UInt_t * indexes2 = seed2.GetIndexes(); | |
7ad19338 | 712 | for (Int_t i=0;i<kNPlane;i++) { |
713 | pt->SetPIDsignals(seed2.GetPIDsignals(i),i); | |
714 | pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i); | |
715 | } | |
eab5961e | 716 | |
46e2d86c | 717 | UInt_t * indexes3 = pt->GetBackupIndexes(); |
718 | for (Int_t i=0;i<200;i++) { | |
719 | if (indexes2[i]==0) break; | |
720 | indexes3[i] = indexes2[i]; | |
721 | } | |
722 | //AliTRDtrack *pt = seed2; | |
1e9bb598 | 723 | AliTRDtrack &t=*pt; |
724 | FollowProlongation(t, innerTB); | |
725 | if (t.GetNumberOfClusters() >= foundMin) { | |
46e2d86c | 726 | // UseClusters(&t); |
727 | //CookLabel(pt, 1-fgkLabelFraction); | |
7ad19338 | 728 | t.CookdEdx(); |
729 | CookdEdxTimBin(t); | |
1e9bb598 | 730 | } |
731 | found++; | |
732 | // cout<<found<<'\r'; | |
733 | ||
734 | if(PropagateToTPC(t)) { | |
0fa7dfa7 | 735 | seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit); |
7ad19338 | 736 | for (Int_t i=0;i<kNPlane;i++) { |
737 | seed->SetTRDsignals(pt->GetPIDsignals(i),i); | |
738 | seed->SetTRDTimBin(pt->GetPIDTimBin(i),i); | |
739 | } | |
7bed16a7 | 740 | }else{ |
741 | //if not prolongation to TPC - propagate without update | |
742 | AliTRDtrack* seed2 = new AliTRDtrack(*seed); | |
743 | seed2->ResetCovariance(5.); | |
744 | AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); | |
745 | delete seed2; | |
eab5961e | 746 | if (PropagateToTPC(*pt2)) { |
747 | pt2->CookdEdx(0.,1.); | |
748 | CookdEdxTimBin(*pt2); | |
7bed16a7 | 749 | seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); |
7ad19338 | 750 | for (Int_t i=0;i<kNPlane;i++) { |
751 | seed->SetTRDsignals(pt2->GetPIDsignals(i),i); | |
752 | seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i); | |
753 | } | |
eab5961e | 754 | } |
7bed16a7 | 755 | delete pt2; |
1e9bb598 | 756 | } |
1e9bb598 | 757 | delete pt; |
eab5961e | 758 | } |
1e9bb598 | 759 | |
760 | cout<<"Number of loaded seeds: "<<nseed<<endl; | |
761 | cout<<"Number of found tracks from loaded seeds: "<<found<<endl; | |
762 | ||
c630aafd | 763 | return 0; |
764 | ||
765 | } | |
766 | ||
bbf92647 | 767 | |
5443e65e | 768 | //--------------------------------------------------------------------------- |
769 | Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) | |
770 | { | |
771 | // Starting from current position on track=t this function tries | |
772 | // to extrapolate the track up to timeBin=0 and to confirm prolongation | |
773 | // if a close cluster is found. Returns the number of clusters | |
774 | // expected to be found in sensitive layers | |
bbf92647 | 775 | |
5443e65e | 776 | Float_t wIndex, wTB, wChi2; |
777 | Float_t wYrt, wYclosest, wYcorrect, wYwindow; | |
778 | Float_t wZrt, wZclosest, wZcorrect, wZwindow; | |
779 | Float_t wPx, wPy, wPz, wC; | |
029cd327 | 780 | Double_t px, py, pz; |
5443e65e | 781 | Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; |
3c625a9b | 782 | Int_t lastplane = GetLastPlane(&t); |
46d29e70 | 783 | |
5443e65e | 784 | Int_t trackIndex = t.GetLabel(); |
46d29e70 | 785 | |
5443e65e | 786 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
46d29e70 | 787 | |
029cd327 | 788 | Int_t tryAgain=fMaxGap; |
46d29e70 | 789 | |
5443e65e | 790 | Double_t alpha=t.GetAlpha(); |
c630aafd | 791 | alpha = TVector2::Phi_0_2pi(alpha); |
46d29e70 | 792 | |
5443e65e | 793 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; |
029cd327 | 794 | Double_t radLength, rho, x, dx, y, ymax, z; |
46d29e70 | 795 | |
5443e65e | 796 | Int_t expectedNumberOfClusters = 0; |
797 | Bool_t lookForCluster; | |
46d29e70 | 798 | |
5443e65e | 799 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 800 | |
5443e65e | 801 | |
802 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
803 | ||
804 | y = t.GetY(); z = t.GetZ(); | |
805 | ||
806 | // first propagate to the inner surface of the current time bin | |
029cd327 | 807 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 808 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 809 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 810 | y = t.GetY(); |
811 | ymax = x*TMath::Tan(0.5*alpha); | |
812 | if (y > ymax) { | |
813 | s = (s+1) % ns; | |
814 | if (!t.Rotate(alpha)) break; | |
029cd327 | 815 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 816 | } else if (y <-ymax) { |
817 | s = (s-1+ns) % ns; | |
818 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 819 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 820 | } |
46d29e70 | 821 | |
5443e65e | 822 | y = t.GetY(); z = t.GetZ(); |
823 | ||
824 | // now propagate to the middle plane of the next time bin | |
029cd327 | 825 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 826 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 827 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 828 | y = t.GetY(); |
829 | ymax = x*TMath::Tan(0.5*alpha); | |
830 | if (y > ymax) { | |
831 | s = (s+1) % ns; | |
832 | if (!t.Rotate(alpha)) break; | |
029cd327 | 833 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 834 | } else if (y <-ymax) { |
835 | s = (s-1+ns) % ns; | |
836 | if (!t.Rotate(-alpha)) break; | |
029cd327 | 837 | if(!t.PropagateTo(x,radLength,rho)) break; |
5443e65e | 838 | } |
46d29e70 | 839 | |
46d29e70 | 840 | |
5443e65e | 841 | if(lookForCluster) { |
a819a5f7 | 842 | |
5443e65e | 843 | expectedNumberOfClusters++; |
5443e65e | 844 | wIndex = (Float_t) t.GetLabel(); |
845 | wTB = nr; | |
46d29e70 | 846 | |
029cd327 | 847 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); |
46d29e70 | 848 | |
5443e65e | 849 | Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); |
5443e65e | 850 | Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); |
46d29e70 | 851 | |
5443e65e | 852 | Double_t road; |
853 | if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); | |
854 | else return expectedNumberOfClusters; | |
855 | ||
856 | wYrt = (Float_t) y; | |
857 | wZrt = (Float_t) z; | |
858 | wYwindow = (Float_t) road; | |
029cd327 | 859 | t.GetPxPyPz(px,py,pz); |
860 | wPx = (Float_t) px; | |
861 | wPy = (Float_t) py; | |
862 | wPz = (Float_t) pz; | |
5443e65e | 863 | wC = (Float_t) t.GetC(); |
864 | wSigmaC2 = (Float_t) t.GetSigmaC2(); | |
865 | wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); | |
866 | wSigmaY2 = (Float_t) t.GetSigmaY2(); | |
867 | wSigmaZ2 = (Float_t) t.GetSigmaZ2(); | |
868 | wChi2 = -1; | |
869 | ||
5443e65e | 870 | |
871 | AliTRDcluster *cl=0; | |
872 | UInt_t index=0; | |
873 | ||
029cd327 | 874 | Double_t maxChi2=fgkMaxChi2; |
5443e65e | 875 | |
876 | wYclosest = 12345678; | |
877 | wYcorrect = 12345678; | |
878 | wZclosest = 12345678; | |
879 | wZcorrect = 12345678; | |
880 | wZwindow = TMath::Sqrt(2.25 * 12 * sz2); | |
881 | ||
882 | // Find the closest correct cluster for debugging purposes | |
4f1c04d3 | 883 | if (timeBin&&fVocal) { |
a9814c09 | 884 | Float_t minDY = 1000000; |
029cd327 | 885 | for (Int_t i=0; i<timeBin; i++) { |
886 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
a9814c09 | 887 | if((c->GetLabel(0) != trackIndex) && |
888 | (c->GetLabel(1) != trackIndex) && | |
889 | (c->GetLabel(2) != trackIndex)) continue; | |
890 | if(TMath::Abs(c->GetY() - y) > minDY) continue; | |
891 | minDY = TMath::Abs(c->GetY() - y); | |
892 | wYcorrect = c->GetY(); | |
893 | wZcorrect = c->GetZ(); | |
894 | ||
895 | Double_t h01 = GetTiltFactor(c); | |
896 | wChi2 = t.GetPredictedChi2(c, h01); | |
897 | } | |
5443e65e | 898 | } |
46d29e70 | 899 | |
5443e65e | 900 | // Now go for the real cluster search |
a819a5f7 | 901 | |
029cd327 | 902 | if (timeBin) { |
46e2d86c | 903 | // |
904 | //find cluster in history | |
905 | cl =0; | |
906 | ||
907 | AliTRDcluster * cl0 = timeBin[0]; | |
908 | if (!cl0) { | |
909 | continue; | |
910 | } | |
911 | Int_t plane = fGeom->GetPlane(cl0->GetDetector()); | |
3c625a9b | 912 | if (plane>lastplane) continue; |
46e2d86c | 913 | Int_t timebin = cl0->GetLocalTimeBin(); |
7ad19338 | 914 | AliTRDcluster * cl2= GetCluster(&t,plane, timebin,index); |
3c625a9b | 915 | if (cl2) { |
916 | cl =cl2; | |
917 | Double_t h01 = GetTiltFactor(cl); | |
918 | maxChi2=t.GetPredictedChi2(cl,h01); | |
919 | } | |
46e2d86c | 920 | if ((!cl) && road>fgkWideRoad) { |
921 | //if (t.GetNumberOfClusters()>4) | |
922 | // cerr<<t.GetNumberOfClusters() | |
923 | // <<"FindProlongation warning: Too broad road !\n"; | |
924 | continue; | |
925 | } | |
926 | ||
a9814c09 | 927 | if (cl) { |
4f1c04d3 | 928 | |
a9814c09 | 929 | wYclosest = cl->GetY(); |
930 | wZclosest = cl->GetZ(); | |
931 | Double_t h01 = GetTiltFactor(cl); | |
932 | ||
4f1c04d3 | 933 | if (cl->GetNPads()<5) |
7ad19338 | 934 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx)); |
3c625a9b | 935 | Int_t det = cl->GetDetector(); |
936 | Int_t plane = fGeom->GetPlane(det); | |
46e2d86c | 937 | |
3c625a9b | 938 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
939 | //if(!t.Update(cl,maxChi2,index,h01)) { | |
940 | //if(!tryAgain--) return 0; | |
a9814c09 | 941 | } |
029cd327 | 942 | else tryAgain=fMaxGap; |
a9814c09 | 943 | } |
944 | else { | |
3c625a9b | 945 | //if (tryAgain==0) break; |
029cd327 | 946 | tryAgain--; |
a9814c09 | 947 | } |
5443e65e | 948 | } |
949 | } | |
950 | } | |
951 | return expectedNumberOfClusters; | |
952 | ||
953 | ||
954 | } | |
a819a5f7 | 955 | |
5443e65e | 956 | //___________________________________________________________________ |
46d29e70 | 957 | |
5443e65e | 958 | Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) |
959 | { | |
960 | // Starting from current radial position of track <t> this function | |
961 | // extrapolates the track up to outer timebin and in the sensitive | |
962 | // layers confirms prolongation if a close cluster is found. | |
963 | // Returns the number of clusters expected to be found in sensitive layers | |
46d29e70 | 964 | |
029cd327 | 965 | Int_t tryAgain=fMaxGap; |
46d29e70 | 966 | |
5443e65e | 967 | Double_t alpha=t.GetAlpha(); |
9c9d2487 | 968 | TVector2::Phi_0_2pi(alpha); |
46d29e70 | 969 | |
9c9d2487 | 970 | Int_t s; |
4f1c04d3 | 971 | |
972 | Int_t clusters[1000]; | |
973 | for (Int_t i=0;i<1000;i++) clusters[i]=-1; | |
46d29e70 | 974 | |
5443e65e | 975 | Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); |
7ad19338 | 976 | //Double_t radLength, rho, x, dx, y, ymax = 0, z; |
977 | Double_t radLength, rho, x, dx, y, z; | |
5443e65e | 978 | Bool_t lookForCluster; |
a819a5f7 | 979 | |
5443e65e | 980 | Int_t expectedNumberOfClusters = 0; |
981 | x = t.GetX(); | |
46d29e70 | 982 | |
5443e65e | 983 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning |
46d29e70 | 984 | |
7ad19338 | 985 | // Int_t zone =0; |
3c625a9b | 986 | Int_t nr; |
7ad19338 | 987 | Float_t ratio0=0; |
988 | AliTRDtracklet tracklet; | |
989 | // | |
3c625a9b | 990 | for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) { |
7ad19338 | 991 | |
9c9d2487 | 992 | y = t.GetY(); |
993 | z = t.GetZ(); | |
5443e65e | 994 | // first propagate to the outer surface of the current time bin |
46d29e70 | 995 | |
9c9d2487 | 996 | s = t.GetSector(); |
029cd327 | 997 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 998 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; |
999 | y = t.GetY(); | |
1000 | z = t.GetZ(); | |
46d29e70 | 1001 | |
029cd327 | 1002 | if(!t.PropagateTo(x,radLength,rho)) break; |
3c625a9b | 1003 | // |
1004 | // MI -fix untill correct material desription will be implemented | |
1005 | // | |
7ad19338 | 1006 | //Int_t nrotate = t.GetNRotate(); |
1007 | if (!AdjustSector(&t)) break; | |
3c625a9b | 1008 | // |
1009 | // | |
5443e65e | 1010 | y = t.GetY(); |
9c9d2487 | 1011 | z = t.GetZ(); |
9c9d2487 | 1012 | s = t.GetSector(); |
a819a5f7 | 1013 | |
9c9d2487 | 1014 | // now propagate to the middle plane of the next time bin |
029cd327 | 1015 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
7ad19338 | 1016 | // if (nrotate!=t.GetNRotate()){ |
1017 | // rho = 1000*2.7; radLength = 24.01; //TEMPORARY - aluminium in between z - will be detected using GeoModeler in future versions | |
1018 | // } | |
9c9d2487 | 1019 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); |
4f1c04d3 | 1020 | if(!t.PropagateTo(x,radLength,rho)) break; |
9c9d2487 | 1021 | if (!AdjustSector(&t)) break; |
1022 | s = t.GetSector(); | |
7ad19338 | 1023 | // if(!t.PropagateTo(x,radLength,rho)) break; |
4f1c04d3 | 1024 | |
1025 | if (TMath::Abs(t.GetSnp())>0.95) break; | |
46d29e70 | 1026 | |
9c9d2487 | 1027 | y = t.GetY(); |
1028 | z = t.GetZ(); | |
1029 | ||
5443e65e | 1030 | if(lookForCluster) { |
7ad19338 | 1031 | if (clusters[nr]==-1) { |
1032 | Float_t ncl = FindClusters(s,nr,nr+30,&t,clusters,tracklet); | |
1033 | ratio0 = ncl/Float_t(fTimeBinsPerPlane); | |
1034 | Float_t ratio1 = Float_t(t.fN+1)/Float_t(t.fNExpected+1.); | |
1035 | if (tracklet.GetChi2()<18.&&ratio0>0.8 && ratio1>0.6 && ratio0+ratio1>1.5 && t.GetNCross()==0 && TMath::Abs(t.GetSnp())<0.85&&t.fN>20){ | |
1036 | t.MakeBackupTrack(); // make backup of the track until is gold | |
1037 | } | |
1038 | // if (ncl>4){ | |
1039 | // t.PropagateTo(tracklet.GetX()); | |
1040 | // t.UpdateMI(tracklet); | |
1041 | // nr = fTrSec[0]->GetLayerNumber(t.GetX())+1; | |
1042 | // continue; | |
1043 | // } | |
1044 | } | |
5443e65e | 1045 | |
4f1c04d3 | 1046 | expectedNumberOfClusters++; |
1047 | t.fNExpected++; | |
1048 | if (t.fX>345) t.fNExpectedLast++; | |
5443e65e | 1049 | |
029cd327 | 1050 | AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); |
5443e65e | 1051 | Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); |
7ad19338 | 1052 | if((t.GetSigmaY2() + sy2) < 0) { |
1053 | printf("problem\n"); | |
1054 | break; | |
1055 | } | |
5443e65e | 1056 | Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); |
5443e65e | 1057 | |
029cd327 | 1058 | if (road>fgkWideRoad) { |
a9814c09 | 1059 | return 0; |
5443e65e | 1060 | } |
1061 | ||
1062 | AliTRDcluster *cl=0; | |
1063 | UInt_t index=0; | |
029cd327 | 1064 | Double_t maxChi2=fgkMaxChi2; |
9c9d2487 | 1065 | |
5443e65e | 1066 | // Now go for the real cluster search |
46d29e70 | 1067 | |
029cd327 | 1068 | if (timeBin) { |
7ad19338 | 1069 | |
1070 | if (clusters[nr+1]>0) { | |
4f1c04d3 | 1071 | index = clusters[nr+1]; |
1072 | cl = (AliTRDcluster*)GetCluster(index); | |
1073 | Double_t h01 = GetTiltFactor(cl); | |
1074 | maxChi2=t.GetPredictedChi2(cl,h01); | |
4f1c04d3 | 1075 | } |
7ad19338 | 1076 | |
a9814c09 | 1077 | if (cl) { |
4f1c04d3 | 1078 | if (cl->GetNPads()<5) |
7ad19338 | 1079 | t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx)); |
a9814c09 | 1080 | Double_t h01 = GetTiltFactor(cl); |
3c625a9b | 1081 | Int_t det = cl->GetDetector(); |
1082 | Int_t plane = fGeom->GetPlane(det); | |
4f1c04d3 | 1083 | if (t.fX>345){ |
1084 | t.fNLast++; | |
1085 | t.fChi2Last+=maxChi2; | |
1086 | } | |
3c625a9b | 1087 | if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { |
4f1c04d3 | 1088 | if(!t.Update(cl,maxChi2,index,h01)) { |
7ad19338 | 1089 | //if(!tryAgain--) return 0; |
4f1c04d3 | 1090 | } |
a9814c09 | 1091 | } |
029cd327 | 1092 | else tryAgain=fMaxGap; |
7ad19338 | 1093 | // |
1094 | ||
1095 | if (cl->GetLocalTimeBin()==1&&t.fN>20 && float(t.fChi2)/float(t.fN)<5){ | |
1096 | Float_t ratio1 = Float_t(t.fN)/Float_t(t.fNExpected); | |
1097 | if (tracklet.GetChi2()<18&&ratio0>0.8&&ratio1>0.6 &&ratio0+ratio1>1.5 && t.GetNCross()==0 && TMath::Abs(t.GetSnp())<0.85){ | |
1098 | t.MakeBackupTrack(); // make backup of the track until is gold | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | } | |
a9814c09 | 1103 | else { |
7ad19338 | 1104 | // if (tryAgain==0) break; |
1105 | //tryAgain--; | |
a9814c09 | 1106 | } |
7ad19338 | 1107 | |
1108 | ||
5443e65e | 1109 | } |
1110 | } | |
1111 | } | |
3c625a9b | 1112 | if (nr<outerTB) |
1113 | t.SetStop(kTRUE); | |
1114 | else | |
1115 | t.SetStop(kFALSE); | |
5443e65e | 1116 | return expectedNumberOfClusters; |
7ad19338 | 1117 | |
1118 | ||
5443e65e | 1119 | } |
1120 | ||
1e9bb598 | 1121 | //--------------------------------------------------------------------------- |
1122 | Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf) | |
1123 | { | |
1124 | // Starting from current position on track=t this function tries | |
1125 | // to extrapolate the track up to timeBin=0 and to reuse already | |
1126 | // assigned clusters. Returns the number of clusters | |
1127 | // expected to be found in sensitive layers | |
1128 | // get indices of assigned clusters for each layer | |
1129 | // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) | |
1130 | ||
1131 | Int_t iCluster[90]; | |
1132 | for (Int_t i = 0; i < 90; i++) iCluster[i] = 0; | |
1133 | for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) { | |
1134 | Int_t index = t.GetClusterIndex(i); | |
1135 | AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index); | |
1136 | if (!cl) continue; | |
1137 | Int_t detector=cl->GetDetector(); | |
1138 | Int_t localTimeBin=cl->GetLocalTimeBin(); | |
1139 | Int_t sector=fGeom->GetSector(detector); | |
1140 | Int_t plane=fGeom->GetPlane(detector); | |
1141 | ||
1142 | Int_t trackingSector = CookSectorIndex(sector); | |
1143 | ||
1144 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); | |
1145 | if(gtb < 0) continue; | |
1146 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); | |
1147 | iCluster[layer] = index; | |
1148 | } | |
1149 | t.ResetClusters(); | |
1150 | ||
1151 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1152 | ||
1153 | Double_t alpha=t.GetAlpha(); | |
1154 | alpha = TVector2::Phi_0_2pi(alpha); | |
1155 | ||
1156 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1157 | Double_t radLength, rho, x, dx, y, ymax, z; | |
1158 | ||
1159 | Int_t expectedNumberOfClusters = 0; | |
1160 | Bool_t lookForCluster; | |
1161 | ||
1162 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1163 | ||
1164 | ||
1165 | for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { | |
1166 | ||
1167 | y = t.GetY(); z = t.GetZ(); | |
1168 | ||
1169 | // first propagate to the inner surface of the current time bin | |
1170 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1171 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); | |
1172 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1173 | y = t.GetY(); | |
1174 | ymax = x*TMath::Tan(0.5*alpha); | |
1175 | if (y > ymax) { | |
1176 | s = (s+1) % ns; | |
1177 | if (!t.Rotate(alpha)) break; | |
1178 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1179 | } else if (y <-ymax) { | |
1180 | s = (s-1+ns) % ns; | |
1181 | if (!t.Rotate(-alpha)) break; | |
1182 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1183 | } | |
1184 | ||
1185 | y = t.GetY(); z = t.GetZ(); | |
1186 | ||
1187 | // now propagate to the middle plane of the next time bin | |
1188 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); | |
1189 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); | |
1190 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1191 | y = t.GetY(); | |
1192 | ymax = x*TMath::Tan(0.5*alpha); | |
1193 | if (y > ymax) { | |
1194 | s = (s+1) % ns; | |
1195 | if (!t.Rotate(alpha)) break; | |
1196 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1197 | } else if (y <-ymax) { | |
1198 | s = (s-1+ns) % ns; | |
1199 | if (!t.Rotate(-alpha)) break; | |
1200 | if(!t.PropagateTo(x,radLength,rho)) break; | |
1201 | } | |
1202 | ||
1203 | if(lookForCluster) expectedNumberOfClusters++; | |
1204 | ||
1205 | // use assigned cluster | |
1206 | if (!iCluster[nr-1]) continue; | |
1207 | AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); | |
1208 | Double_t h01 = GetTiltFactor(cl); | |
1209 | Double_t chi2=t.GetPredictedChi2(cl, h01); | |
7ad19338 | 1210 | if (cl->GetNPads()<5) t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx)); |
4f1c04d3 | 1211 | |
1212 | //t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); | |
1e9bb598 | 1213 | t.Update(cl,chi2,iCluster[nr-1],h01); |
1214 | } | |
1215 | ||
1216 | return expectedNumberOfClusters; | |
1217 | } | |
1218 | ||
5443e65e | 1219 | //___________________________________________________________________ |
1220 | ||
1221 | Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) | |
1222 | { | |
1223 | // Starting from current radial position of track <t> this function | |
1224 | // extrapolates the track up to radial position <xToGo>. | |
1225 | // Returns 1 if track reaches the plane, and 0 otherwise | |
1226 | ||
1227 | Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); | |
1228 | ||
1229 | Double_t alpha=t.GetAlpha(); | |
1230 | ||
1231 | if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); | |
1232 | if (alpha < 0. ) alpha += 2.*TMath::Pi(); | |
1233 | ||
1234 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1235 | ||
1236 | Bool_t lookForCluster; | |
029cd327 | 1237 | Double_t radLength, rho, x, dx, y, ymax, z; |
5443e65e | 1238 | |
1239 | x = t.GetX(); | |
1240 | ||
1241 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
1242 | ||
1243 | Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); | |
1244 | ||
1245 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr<plToGo; nr++) { | |
1246 | ||
1247 | y = t.GetY(); z = t.GetZ(); | |
1248 | ||
1249 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1250 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1251 | x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); |
029cd327 | 1252 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1253 | y = t.GetY(); |
1254 | ymax = x*TMath::Tan(0.5*alpha); | |
1255 | if (y > ymax) { | |
1256 | s = (s+1) % ns; | |
1257 | if (!t.Rotate(alpha)) return 0; | |
1258 | } else if (y <-ymax) { | |
1259 | s = (s-1+ns) % ns; | |
1260 | if (!t.Rotate(-alpha)) return 0; | |
1261 | } | |
029cd327 | 1262 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1263 | |
1264 | y = t.GetY(); z = t.GetZ(); | |
1265 | ||
1266 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1267 | fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
5443e65e | 1268 | x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); |
029cd327 | 1269 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1270 | y = t.GetY(); |
1271 | ymax = x*TMath::Tan(0.5*alpha); | |
1272 | if (y > ymax) { | |
1273 | s = (s+1) % ns; | |
1274 | if (!t.Rotate(alpha)) return 0; | |
1275 | } else if (y <-ymax) { | |
1276 | s = (s-1+ns) % ns; | |
1277 | if (!t.Rotate(-alpha)) return 0; | |
1278 | } | |
029cd327 | 1279 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1280 | } |
1281 | return 1; | |
1282 | } | |
1283 | ||
1284 | //___________________________________________________________________ | |
1285 | ||
1286 | Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) | |
1287 | { | |
1288 | // Starting from current radial position of track <t> this function | |
1289 | // extrapolates the track up to radial position of the outermost | |
1290 | // padrow of the TPC. | |
1291 | // Returns 1 if track reaches the TPC, and 0 otherwise | |
1292 | ||
c630aafd | 1293 | //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); |
5443e65e | 1294 | |
1295 | Double_t alpha=t.GetAlpha(); | |
c630aafd | 1296 | alpha = TVector2::Phi_0_2pi(alpha); |
5443e65e | 1297 | |
1298 | Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; | |
1299 | ||
1300 | Bool_t lookForCluster; | |
029cd327 | 1301 | Double_t radLength, rho, x, dx, y, /*ymax,*/ z; |
5443e65e | 1302 | |
1303 | x = t.GetX(); | |
1304 | ||
1305 | alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning | |
5443e65e | 1306 | Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); |
1307 | ||
1308 | for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { | |
1309 | ||
9c9d2487 | 1310 | y = t.GetY(); |
1311 | z = t.GetZ(); | |
5443e65e | 1312 | |
1313 | // first propagate to the outer surface of the current time bin | |
029cd327 | 1314 | fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1315 | x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; |
1316 | ||
029cd327 | 1317 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1318 | AdjustSector(&t); |
029cd327 | 1319 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
5443e65e | 1320 | |
9c9d2487 | 1321 | y = t.GetY(); |
1322 | z = t.GetZ(); | |
5443e65e | 1323 | |
1324 | // now propagate to the middle plane of the next time bin | |
029cd327 | 1325 | fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); |
9c9d2487 | 1326 | x = fTrSec[s]->GetLayer(nr-1)->GetX(); |
1327 | ||
029cd327 | 1328 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
9c9d2487 | 1329 | AdjustSector(&t); |
029cd327 | 1330 | if(!t.PropagateTo(x,radLength,rho)) return 0; |
c5a8e3df | 1331 | } |
5443e65e | 1332 | return 1; |
1333 | } | |
1334 | ||
c630aafd | 1335 | //_____________________________________________________________________________ |
1336 | Int_t AliTRDtracker::LoadClusters(TTree *cTree) | |
1337 | { | |
1338 | // Fills clusters into TRD tracking_sectors | |
1339 | // Note that the numbering scheme for the TRD tracking_sectors | |
1340 | // differs from that of TRD sectors | |
4f1c04d3 | 1341 | cout<<"\n Read Sectors clusters"<<endl; |
c630aafd | 1342 | if (ReadClusters(fClusters,cTree)) { |
1343 | Error("LoadClusters","Problem with reading the clusters !"); | |
1344 | return 1; | |
1345 | } | |
1346 | Int_t ncl=fClusters->GetEntriesFast(); | |
b7a0917f | 1347 | fNclusters=ncl; |
c630aafd | 1348 | cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl; |
1349 | ||
1350 | UInt_t index; | |
3c625a9b | 1351 | for (Int_t ichamber=0;ichamber<5;ichamber++) |
1352 | for (Int_t isector=0;isector<18;isector++){ | |
1353 | fHoles[ichamber][isector]=kTRUE; | |
1354 | } | |
1355 | ||
1356 | ||
c630aafd | 1357 | while (ncl--) { |
1358 | // printf("\r %d left ",ncl); | |
1359 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); | |
029cd327 | 1360 | Int_t detector=c->GetDetector(); |
1361 | Int_t localTimeBin=c->GetLocalTimeBin(); | |
c630aafd | 1362 | Int_t sector=fGeom->GetSector(detector); |
1363 | Int_t plane=fGeom->GetPlane(detector); | |
3c625a9b | 1364 | |
029cd327 | 1365 | Int_t trackingSector = CookSectorIndex(sector); |
3c625a9b | 1366 | if (c->GetLabel(0)>0){ |
1367 | Int_t chamber = fGeom->GetChamber(detector); | |
1368 | fHoles[chamber][trackingSector]=kFALSE; | |
1369 | } | |
c630aafd | 1370 | |
029cd327 | 1371 | Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); |
c630aafd | 1372 | if(gtb < 0) continue; |
029cd327 | 1373 | Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); |
c630aafd | 1374 | |
1375 | index=ncl; | |
029cd327 | 1376 | fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); |
c630aafd | 1377 | } |
7bed16a7 | 1378 | // printf("\r\n"); |
3c625a9b | 1379 | // |
1380 | // | |
1381 | /* | |
1382 | for (Int_t isector=0;isector<18;isector++){ | |
1383 | for (Int_t ichamber=0;ichamber<5;ichamber++) | |
1384 | if (fHoles[ichamber][isector]!=fGeom->IsHole(0,ichamber,17-isector)) | |
1385 | printf("Problem \t%d\t%d\t%d\t%d\n",isector,ichamber,fHoles[ichamber][isector], | |
1386 | fGeom->IsHole(0,ichamber,17-isector)); | |
1387 | } | |
1388 | */ | |
c630aafd | 1389 | return 0; |
1390 | } | |
1391 | ||
5443e65e | 1392 | //_____________________________________________________________________________ |
b7a0917f | 1393 | void AliTRDtracker::UnloadClusters() |
5443e65e | 1394 | { |
1395 | // | |
1396 | // Clears the arrays of clusters and tracks. Resets sectors and timebins | |
1397 | // | |
1398 | ||
1399 | Int_t i, nentr; | |
1400 | ||
1401 | nentr = fClusters->GetEntriesFast(); | |
1402 | for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); | |
b7a0917f | 1403 | fNclusters = 0; |
5443e65e | 1404 | |
1405 | nentr = fSeeds->GetEntriesFast(); | |
1406 | for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); | |
1407 | ||
1408 | nentr = fTracks->GetEntriesFast(); | |
1409 | for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); | |
1410 | ||
1411 | Int_t nsec = AliTRDgeometry::kNsect; | |
1412 | ||
1413 | for (i = 0; i < nsec; i++) { | |
1414 | for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { | |
1415 | fTrSec[i]->GetLayer(pl)->Clear(); | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | } | |
1420 | ||
1421 | //__________________________________________________________________________ | |
1422 | void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) | |
1423 | { | |
1424 | // Creates track seeds using clusters in timeBins=i1,i2 | |
1425 | ||
1426 | if(turn > 2) { | |
1427 | cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl; | |
1428 | return; | |
1429 | } | |
1430 | ||
1431 | Double_t x[5], c[15]; | |
029cd327 | 1432 | Int_t maxSec=AliTRDgeometry::kNsect; |
5443e65e | 1433 | |
1434 | Double_t alpha=AliTRDgeometry::GetAlpha(); | |
1435 | Double_t shift=AliTRDgeometry::GetAlpha()/2.; | |
1436 | Double_t cs=cos(alpha), sn=sin(alpha); | |
1437 | Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); | |
1438 | ||
1439 | ||
1440 | Int_t i2 = fTrSec[0]->GetLayerNumber(inner); | |
1441 | Int_t i1 = fTrSec[0]->GetLayerNumber(outer); | |
1442 | ||
1443 | Double_t x1 =fTrSec[0]->GetX(i1); | |
1444 | Double_t xx2=fTrSec[0]->GetX(i2); | |
1445 | ||
029cd327 | 1446 | for (Int_t ns=0; ns<maxSec; ns++) { |
5443e65e | 1447 | |
029cd327 | 1448 | Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
1449 | Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); | |
5443e65e | 1450 | Int_t nm=(*fTrSec[ns]->GetLayer(i2)); |
029cd327 | 1451 | Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
1452 | Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); | |
5443e65e | 1453 | |
1454 | AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); | |
1455 | ||
1456 | for (Int_t is=0; is < r1; is++) { | |
1457 | Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); | |
1458 | ||
1459 | for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { | |
a9814c09 | 1460 | |
1461 | const AliTRDcluster *cl; | |
1462 | Double_t x2, y2, z2; | |
1463 | Double_t x3=0., y3=0.; | |
1464 | ||
1465 | if (js<nl2) { | |
1466 | if(turn != 2) continue; | |
029cd327 | 1467 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1468 | cl=r2[js]; |
1469 | y2=cl->GetY(); z2=cl->GetZ(); | |
1470 | ||
1471 | x2= xx2*cs2+y2*sn2; | |
1472 | y2=-xx2*sn2+y2*cs2; | |
1473 | } | |
1474 | else if (js<nl2+nl) { | |
1475 | if(turn != 1) continue; | |
029cd327 | 1476 | AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); |
a9814c09 | 1477 | cl=r2[js-nl2]; |
1478 | y2=cl->GetY(); z2=cl->GetZ(); | |
1479 | ||
1480 | x2= xx2*cs+y2*sn; | |
1481 | y2=-xx2*sn+y2*cs; | |
1482 | } | |
1483 | else if (js<nl2+nl+nm) { | |
1484 | if(turn != 1) continue; | |
1485 | AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2)); | |
1486 | cl=r2[js-nl2-nl]; | |
1487 | x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); | |
1488 | } | |
1489 | else if (js<nl2+nl+nm+nu) { | |
1490 | if(turn != 1) continue; | |
029cd327 | 1491 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(i2)); |
a9814c09 | 1492 | cl=r2[js-nl2-nl-nm]; |
1493 | y2=cl->GetY(); z2=cl->GetZ(); | |
1494 | ||
1495 | x2=xx2*cs-y2*sn; | |
1496 | y2=xx2*sn+y2*cs; | |
1497 | } | |
1498 | else { | |
1499 | if(turn != 2) continue; | |
029cd327 | 1500 | AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); |
a9814c09 | 1501 | cl=r2[js-nl2-nl-nm-nu]; |
1502 | y2=cl->GetY(); z2=cl->GetZ(); | |
1503 | ||
1504 | x2=xx2*cs2-y2*sn2; | |
1505 | y2=xx2*sn2+y2*cs2; | |
1506 | } | |
1507 | ||
029cd327 | 1508 | if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; |
a9814c09 | 1509 | |
1510 | Double_t zz=z1 - z1/x1*(x1-x2); | |
1511 | ||
029cd327 | 1512 | if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; |
a9814c09 | 1513 | |
1514 | Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); | |
1515 | if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} | |
1516 | ||
1517 | x[0]=y1; | |
1518 | x[1]=z1; | |
1519 | x[4]=f1trd(x1,y1,x2,y2,x3,y3); | |
1520 | ||
029cd327 | 1521 | if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; |
a9814c09 | 1522 | |
1523 | x[2]=f2trd(x1,y1,x2,y2,x3,y3); | |
1524 | ||
1525 | if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; | |
1526 | ||
1527 | x[3]=f3trd(x1,y1,x2,y2,z1,z2); | |
1528 | ||
029cd327 | 1529 | if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; |
a9814c09 | 1530 | |
1531 | Double_t a=asin(x[2]); | |
1532 | Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); | |
1533 | ||
029cd327 | 1534 | if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; |
a9814c09 | 1535 | |
1536 | Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); | |
1537 | Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); | |
029cd327 | 1538 | Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; |
a9814c09 | 1539 | |
1540 | // Tilt changes | |
1541 | Double_t h01 = GetTiltFactor(r1[is]); | |
029cd327 | 1542 | Double_t xuFactor = 100.; |
b8dc2353 | 1543 | if(fNoTilt) { |
1544 | h01 = 0; | |
029cd327 | 1545 | xuFactor = 1; |
b8dc2353 | 1546 | } |
1547 | ||
fd621f36 | 1548 | sy1=sy1+sz1*h01*h01; |
b3a5a838 | 1549 | Double_t syz=sz1*(-h01); |
a9814c09 | 1550 | // end of tilt changes |
1551 | ||
b3a5a838 | 1552 | Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; |
1553 | Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; | |
1554 | Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; | |
1555 | Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; | |
1556 | Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; | |
1557 | Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; | |
1558 | Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; | |
1559 | Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; | |
1560 | Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; | |
1561 | Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; | |
1562 | ||
a9814c09 | 1563 | |
b3a5a838 | 1564 | c[0]=sy1; |
a9814c09 | 1565 | // c[1]=0.; c[2]=sz1; |
029cd327 | 1566 | c[1]=syz; c[2]=sz1*xuFactor; |
b3a5a838 | 1567 | c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; |
1568 | c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; | |
1569 | c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; | |
1570 | c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; | |
1571 | c[13]=f30*sy1*f40+f32*sy2*f42; | |
1572 | c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; | |
a9814c09 | 1573 | |
1574 | UInt_t index=r1.GetIndex(is); | |
1575 | ||
1576 | AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); | |
1577 | ||
1578 | Int_t rc=FollowProlongation(*track, i2); | |
1579 | ||
1580 | if ((rc < 1) || | |
1581 | (track->GetNumberOfClusters() < | |
029cd327 | 1582 | (outer-inner)*fgkMinClustersInSeed)) delete track; |
a9814c09 | 1583 | else { |
1584 | fSeeds->AddLast(track); fNseeds++; | |
e24ea474 | 1585 | // cerr<<"\r found seed "<<fNseeds; |
a9814c09 | 1586 | } |
5443e65e | 1587 | } |
1588 | } | |
1589 | } | |
1590 | } | |
7ad19338 | 1591 | //__________________________________________________________________________ |
1592 | void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/) | |
1593 | { | |
1594 | // | |
1595 | // Creates seeds using clusters between position inner plane and outer plane | |
1596 | // | |
1597 | ||
1598 | const Double_t maxtheta = 2; | |
1599 | const Double_t maxphi = 1.5; | |
1600 | Int_t maxSec=AliTRDgeometry::kNsect; | |
1601 | ||
1602 | // | |
1603 | // find the maximal and minimal layer for the planes | |
1604 | // fucking "object oriented" geometry - find the time bin range for different planes | |
1605 | // | |
1606 | Int_t layers[6][2]; | |
1607 | for (Int_t i=0;i<6;i++){layers[i][0]=10000; layers[i][1]=0;} | |
1608 | ||
1609 | for (Int_t ns=0;ns<maxSec;ns++){ | |
1610 | for (Int_t ilayer=0;ilayer<fTrSec[ns]->GetNumberOfLayers();ilayer++){ | |
1611 | AliTRDpropagationLayer& layer=*(fTrSec[ns]->GetLayer(ilayer)); | |
1612 | if (layer==0) continue; | |
1613 | Int_t det = layer[0]->GetDetector(); | |
1614 | Int_t plane = fGeom->GetPlane(det); | |
1615 | if (ilayer<layers[plane][0]) layers[plane][0] = ilayer; | |
1616 | if (ilayer>layers[plane][1]) layers[plane][1] = ilayer; | |
1617 | } | |
1618 | } | |
1619 | // | |
1620 | ||
1621 | Int_t ilayer1 = layers[5][1]; // time bin in mplification region | |
1622 | Int_t ilayer2 = layers[3][1]; // | |
1623 | Int_t ilayerM = layers[4][1]; // | |
1624 | // | |
1625 | Double_t x1 = fTrSec[0]->GetX(ilayer1); | |
1626 | Double_t x2 = fTrSec[0]->GetX(ilayer2); | |
1627 | Double_t xm = fTrSec[0]->GetX(ilayerM); | |
1628 | Double_t dist = x2-x1; | |
1629 | // Int_t indexes1[20]; | |
1630 | //Int_t indexes2[20]; | |
1631 | AliTRDcluster *clusters1[15],*clusters2[15],*clustersM[15]; | |
1632 | // | |
1633 | // | |
1634 | for (Int_t ns=0; ns<maxSec; ns++) { | |
1635 | AliTRDpropagationLayer& layer1=*(fTrSec[ns]->GetLayer(ilayer1)); //select propagation layers | |
1636 | AliTRDpropagationLayer& layer2=*(fTrSec[ns]->GetLayer(ilayer2)); | |
1637 | // | |
1638 | for (Int_t icl1=0;icl1<layer1;icl1++){ | |
1639 | AliTRDcluster *cl1 = layer1[icl1]; | |
1640 | if (!cl1) continue; | |
1641 | Double_t y1 = cl1->GetY(); | |
1642 | Double_t z1 = cl1->GetZ(); | |
1643 | // | |
1644 | for (Int_t icl2=0;icl2<layer2;icl2++){ | |
1645 | AliTRDcluster *cl2 = layer2[icl2]; | |
1646 | if (!cl2) continue; | |
1647 | Double_t y2 = cl2->GetY(); | |
1648 | Double_t z2 = cl2->GetZ(); | |
1649 | Double_t tanphi = (y2-y1)/dist; | |
1650 | Double_t tantheta = (z2-z1)/dist; | |
1651 | if (TMath::Abs(tanphi)>maxphi) continue; | |
1652 | if (TMath::Abs(tantheta)>maxtheta) continue; | |
1653 | // | |
1654 | clusters1[0] = cl1; | |
1655 | clusters2[0] = cl2; | |
1656 | Double_t road = 0.5+TMath::Abs(tanphi)*1; | |
1657 | Int_t ncl=0; | |
1658 | Double_t sum1=0, sumx1=0,sum2x1=0,sumxy1=0, sumy1=0; | |
1659 | Double_t sum2=0, sumx2=0,sum2x2=0,sumxy2=0, sumy2=0; | |
1660 | // | |
1661 | for (Int_t dlayer=1;dlayer<15;dlayer++){ | |
1662 | clusters1[dlayer]=0; | |
1663 | clusters2[dlayer]=0; | |
1664 | AliTRDpropagationLayer& layer1C=*(fTrSec[ns]->GetLayer(ilayer1-dlayer)); //select propagation layers | |
1665 | AliTRDpropagationLayer& layer2C=*(fTrSec[ns]->GetLayer(ilayer2-dlayer)); // | |
1666 | Double_t yy1 = y1+(tanphi) *(layer1C.GetX()-x1); | |
1667 | Double_t zz1 = z1+(tantheta)*(layer1C.GetX()-x1); | |
1668 | Double_t yy2 = y1+(tanphi) *(layer2C.GetX()-x1); | |
1669 | Double_t zz2 = z1+(tantheta)*(layer2C.GetX()-x1); | |
1670 | Int_t index1 = layer1C.FindNearestCluster(yy1,zz1,road); | |
1671 | Int_t index2 = layer2C.FindNearestCluster(yy2,zz2,road); | |
1672 | if (index1>=0) { | |
1673 | clusters1[dlayer]= (AliTRDcluster*)GetCluster(index1); | |
1674 | ncl++; | |
1675 | sum1++; | |
1676 | Double_t dx = layer1C.GetX()-x1; | |
1677 | sumx1 +=dx; | |
1678 | sum2x1+=dx*dx; | |
1679 | sumxy1+=dx*clusters1[dlayer]->GetY(); | |
1680 | sumy1 +=clusters1[dlayer]->GetY(); | |
1681 | } | |
1682 | if (index2>=0) { | |
1683 | clusters2[dlayer]= (AliTRDcluster*)GetCluster(index2); | |
1684 | ncl++; | |
1685 | sum2++; | |
1686 | Double_t dx = layer2C.GetX()-x2; | |
1687 | sumx2 +=dx; | |
1688 | sum2x2+=dx*dx; | |
1689 | sumxy2+=dx*clusters2[dlayer]->GetY(); | |
1690 | sumy2 +=clusters2[dlayer]->GetY(); | |
1691 | } | |
1692 | } | |
1693 | if (sum1<10) continue; | |
1694 | if (sum2<10) continue; | |
1695 | // | |
1696 | Double_t det1 = sum1*sum2x1-sumx1*sumx1; | |
1697 | Double_t angle1 = (sum1*sumxy1-sumx1*sumy1)/det1; | |
1698 | Double_t pos1 = (sum2x1*sumy1-sumx1*sumxy1)/det1; // at x1 | |
1699 | // | |
1700 | Double_t det2 = sum2*sum2x2-sumx2*sumx2; | |
1701 | Double_t angle2 = (sum2*sumxy2-sumx2*sumy2)/det2; | |
1702 | Double_t pos2 = (sum2x2*sumy2-sumx2*sumxy2)/det2; // at x2 | |
1703 | // | |
1704 | // | |
1705 | ||
1706 | Double_t sumM=0, sumxM=0,sum2xM=0,sumxyM=0, sumyM=0; | |
1707 | // | |
1708 | for (Int_t dlayer=1;dlayer<15;dlayer++){ | |
1709 | clustersM[dlayer]=0; | |
1710 | AliTRDpropagationLayer& layerM=*(fTrSec[ns]->GetLayer(ilayerM-dlayer)); //select propagation layers | |
1711 | Double_t yyM = y1+(tanphi) *(layerM.GetX()-x1); | |
1712 | Double_t zzM = z1+(tantheta)*(layerM.GetX()-x1); | |
1713 | Int_t indexM = layerM.FindNearestCluster(yyM,zzM,road); | |
1714 | if (indexM>=0) { | |
1715 | clustersM[dlayer]= (AliTRDcluster*)GetCluster(indexM); | |
1716 | ncl++; | |
1717 | sumM++; | |
1718 | Double_t dx = layerM.GetX()-xm; | |
1719 | sumxM +=dx; | |
1720 | sum2xM+=dx*dx; | |
1721 | sumxyM+=dx*clustersM[dlayer]->GetY(); | |
1722 | sumyM +=clustersM[dlayer]->GetY(); | |
1723 | } | |
1724 | } | |
1725 | Double_t detM = sumM*sum2xM-sumxM*sumxM; | |
1726 | Double_t posM=0, angleM=0; | |
1727 | if (TMath::Abs(detM)>0.0000001){ | |
1728 | angleM = (sumM*sumxyM-sumxM*sumyM)/detM; | |
1729 | posM = (sum2xM*sumyM-sumxM*sumxyM)/detM; // at xm | |
1730 | } | |
1731 | // | |
1732 | ||
1733 | if (ncl>15){ | |
1734 | TTreeSRedirector& cstream = *fDebugStreamer; | |
1735 | cstream<<"Seeds"<< | |
1736 | "Ncl="<<ncl<< | |
1737 | "SumM="<<sumM<< | |
1738 | "x1="<<x1<< | |
1739 | "x2="<<x2<< | |
1740 | "Cl1.="<<cl1<< | |
1741 | "Cl2.="<<cl2<< | |
1742 | "Phi="<<tanphi<< | |
1743 | "Theta="<<tantheta<< | |
1744 | "Pos1="<<pos1<< | |
1745 | "Pos2="<<pos2<< | |
1746 | "PosM="<<posM<< | |
1747 | "Angle1="<<angle1<< | |
1748 | "Angle2="<<angle2<< | |
1749 | "AngleM="<<angleM<< | |
1750 | "\n"; | |
1751 | } | |
1752 | } | |
1753 | } | |
1754 | } | |
1755 | } | |
5443e65e | 1756 | |
1757 | //_____________________________________________________________________________ | |
b7a0917f | 1758 | Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const |
5443e65e | 1759 | { |
1760 | // | |
a819a5f7 | 1761 | // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) |
1762 | // from the file. The names of the cluster tree and branches | |
1763 | // should match the ones used in AliTRDclusterizer::WriteClusters() | |
1764 | // | |
4f1c04d3 | 1765 | Int_t nsize = Int_t(ClusterTree->GetTotBytes()/(sizeof(AliTRDcluster))); |
1766 | TObjArray *clusterArray = new TObjArray(nsize+1000); | |
5443e65e | 1767 | |
c630aafd | 1768 | TBranch *branch=ClusterTree->GetBranch("TRDcluster"); |
1769 | if (!branch) { | |
1770 | Error("ReadClusters","Can't get the branch !"); | |
1771 | return 1; | |
1772 | } | |
029cd327 | 1773 | branch->SetAddress(&clusterArray); |
5443e65e | 1774 | |
1775 | Int_t nEntries = (Int_t) ClusterTree->GetEntries(); | |
19dd5b2f | 1776 | // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); |
a819a5f7 | 1777 | |
a819a5f7 | 1778 | // Loop through all entries in the tree |
eb187bed | 1779 | Int_t nbytes = 0; |
a819a5f7 | 1780 | AliTRDcluster *c = 0; |
7bed16a7 | 1781 | // printf("\n"); |
a819a5f7 | 1782 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { |
1783 | ||
1784 | // Import the tree | |
5443e65e | 1785 | nbytes += ClusterTree->GetEvent(iEntry); |
1786 | ||
a819a5f7 | 1787 | // Get the number of points in the detector |
029cd327 | 1788 | Int_t nCluster = clusterArray->GetEntriesFast(); |
e24ea474 | 1789 | // printf("\r Read %d clusters from entry %d", nCluster, iEntry); |
5443e65e | 1790 | |
a819a5f7 | 1791 | // Loop through all TRD digits |
1792 | for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { | |
029cd327 | 1793 | c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); |
7ad19338 | 1794 | // if (c->GetNPads()>3&&(iCluster%3>0)) { |
1795 | // delete clusterArray->RemoveAt(iCluster); | |
1796 | // continue; | |
1797 | // } | |
4f1c04d3 | 1798 | // AliTRDcluster *co = new AliTRDcluster(*c); //remove unnecesary coping - + clusters are together in memory |
1799 | AliTRDcluster *co = c; | |
a819a5f7 | 1800 | co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); |
5443e65e | 1801 | Int_t ltb = co->GetLocalTimeBin(); |
b8dc2353 | 1802 | if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); |
1803 | else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); | |
a819a5f7 | 1804 | array->AddLast(co); |
4f1c04d3 | 1805 | // delete clusterArray->RemoveAt(iCluster); |
1806 | clusterArray->RemoveAt(iCluster); | |
a819a5f7 | 1807 | } |
1808 | } | |
7c1698cb | 1809 | // cout<<"Allocated"<<nsize<<"\tLoaded"<<array->GetEntriesFast()<<"\n"; |
a819a5f7 | 1810 | |
029cd327 | 1811 | delete clusterArray; |
5443e65e | 1812 | |
c630aafd | 1813 | return 0; |
a819a5f7 | 1814 | } |
1815 | ||
46d29e70 | 1816 | //__________________________________________________________________ |
029cd327 | 1817 | void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const |
1818 | { | |
1819 | // | |
1820 | // This cooks a label. Mmmmh, smells good... | |
1821 | // | |
46d29e70 | 1822 | |
1823 | Int_t label=123456789, index, i, j; | |
5443e65e | 1824 | Int_t ncl=pt->GetNumberOfClusters(); |
029cd327 | 1825 | const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; |
5443e65e | 1826 | |
029cd327 | 1827 | Bool_t labelAdded; |
46d29e70 | 1828 | |
029cd327 | 1829 | // Int_t s[kRange][2]; |
1830 | Int_t **s = new Int_t* [kRange]; | |
1831 | for (i=0; i<kRange; i++) { | |
d1b06c24 | 1832 | s[i] = new Int_t[2]; |
1833 | } | |
029cd327 | 1834 | for (i=0; i<kRange; i++) { |
46d29e70 | 1835 | s[i][0]=-1; |
1836 | s[i][1]=0; | |
1837 | } | |
1838 | ||
1839 | Int_t t0,t1,t2; | |
1840 | for (i=0; i<ncl; i++) { | |
5443e65e | 1841 | index=pt->GetClusterIndex(i); |
46d29e70 | 1842 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
5443e65e | 1843 | t0=c->GetLabel(0); |
1844 | t1=c->GetLabel(1); | |
1845 | t2=c->GetLabel(2); | |
46d29e70 | 1846 | } |
1847 | ||
1848 | for (i=0; i<ncl; i++) { | |
5443e65e | 1849 | index=pt->GetClusterIndex(i); |
46d29e70 | 1850 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); |
1851 | for (Int_t k=0; k<3; k++) { | |
5443e65e | 1852 | label=c->GetLabel(k); |
029cd327 | 1853 | labelAdded=kFALSE; j=0; |
46d29e70 | 1854 | if (label >= 0) { |
029cd327 | 1855 | while ( (!labelAdded) && ( j < kRange ) ) { |
a9814c09 | 1856 | if (s[j][0]==label || s[j][1]==0) { |
1857 | s[j][0]=label; | |
1858 | s[j][1]=s[j][1]+1; | |
029cd327 | 1859 | labelAdded=kTRUE; |
a9814c09 | 1860 | } |
1861 | j++; | |
1862 | } | |
46d29e70 | 1863 | } |
1864 | } | |
1865 | } | |
1866 | ||
46d29e70 | 1867 | Int_t max=0; |
1868 | label = -123456789; | |
1869 | ||
029cd327 | 1870 | for (i=0; i<kRange; i++) { |
46d29e70 | 1871 | if (s[i][1]>max) { |
1872 | max=s[i][1]; label=s[i][0]; | |
1873 | } | |
1874 | } | |
5443e65e | 1875 | |
029cd327 | 1876 | for (i=0; i<kRange; i++) { |
5443e65e | 1877 | delete []s[i]; |
1878 | } | |
1879 | ||
d1b06c24 | 1880 | delete []s; |
5443e65e | 1881 | |
1882 | if ((1.- Float_t(max)/ncl) > wrong) label=-label; | |
1883 | ||
1884 | pt->SetLabel(label); | |
1885 | ||
46d29e70 | 1886 | } |
1887 | ||
c630aafd | 1888 | |
5443e65e | 1889 | //__________________________________________________________________ |
029cd327 | 1890 | void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const |
1891 | { | |
1892 | // | |
1893 | // Use clusters, but don't abuse them! | |
1894 | // | |
1895 | ||
5443e65e | 1896 | Int_t ncl=t->GetNumberOfClusters(); |
1897 | for (Int_t i=from; i<ncl; i++) { | |
1898 | Int_t index = t->GetClusterIndex(i); | |
1899 | AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); | |
1900 | c->Use(); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | ||
1905 | //_____________________________________________________________________ | |
029cd327 | 1906 | Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const |
5443e65e | 1907 | { |
1908 | // Parametrised "expected" error of the cluster reconstruction in Y | |
1909 | ||
1910 | Double_t s = 0.08 * 0.08; | |
1911 | return s; | |
1912 | } | |
1913 | ||
1914 | //_____________________________________________________________________ | |
029cd327 | 1915 | Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const |
0a29d0f1 | 1916 | { |
5443e65e | 1917 | // Parametrised "expected" error of the cluster reconstruction in Z |
1918 | ||
a9814c09 | 1919 | Double_t s = 9 * 9 /12.; |
5443e65e | 1920 | return s; |
1921 | } | |
1922 | ||
5443e65e | 1923 | //_____________________________________________________________________ |
029cd327 | 1924 | Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const |
5443e65e | 1925 | { |
1926 | // | |
029cd327 | 1927 | // Returns radial position which corresponds to time bin <localTB> |
5443e65e | 1928 | // in tracking sector <sector> and plane <plane> |
1929 | // | |
1930 | ||
029cd327 | 1931 | Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); |
5443e65e | 1932 | Int_t pl = fTrSec[sector]->GetLayerNumber(index); |
1933 | return fTrSec[sector]->GetLayer(pl)->GetX(); | |
1934 | ||
1935 | } | |
1936 | ||
c630aafd | 1937 | |
5443e65e | 1938 | //_______________________________________________________ |
1939 | AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, | |
029cd327 | 1940 | Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) |
5443e65e | 1941 | { |
0a29d0f1 | 1942 | // |
5443e65e | 1943 | // AliTRDpropagationLayer constructor |
0a29d0f1 | 1944 | // |
46d29e70 | 1945 | |
029cd327 | 1946 | fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; |
1947 | fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; | |
5443e65e | 1948 | |
46d29e70 | 1949 | |
029cd327 | 1950 | for(Int_t i=0; i < (Int_t) kZones; i++) { |
5443e65e | 1951 | fZc[i]=0; fZmax[i] = 0; |
a819a5f7 | 1952 | } |
5443e65e | 1953 | |
1954 | fYmax = 0; | |
1955 | ||
1956 | if(fTimeBinIndex >= 0) { | |
029cd327 | 1957 | fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; |
1958 | fIndex = new UInt_t[kMaxClusterPerTimeBin]; | |
a819a5f7 | 1959 | } |
46d29e70 | 1960 | |
3c625a9b | 1961 | for (Int_t i=0;i<5;i++) fIsHole[i] = kFALSE; |
5443e65e | 1962 | fHole = kFALSE; |
1963 | fHoleZc = 0; | |
1964 | fHoleZmax = 0; | |
1965 | fHoleYc = 0; | |
1966 | fHoleYmax = 0; | |
1967 | fHoleRho = 0; | |
1968 | fHoleX0 = 0; | |
1969 | ||
1970 | } | |
1971 | ||
1972 | //_______________________________________________________ | |
1973 | void AliTRDtracker::AliTRDpropagationLayer::SetHole( | |
a9814c09 | 1974 | Double_t Zmax, Double_t Ymax, Double_t rho, |
029cd327 | 1975 | Double_t radLength, Double_t Yc, Double_t Zc) |
5443e65e | 1976 | { |
1977 | // | |
1978 | // Sets hole in the layer | |
1979 | // | |
5443e65e | 1980 | fHole = kTRUE; |
1981 | fHoleZc = Zc; | |
1982 | fHoleZmax = Zmax; | |
1983 | fHoleYc = Yc; | |
1984 | fHoleYmax = Ymax; | |
1985 | fHoleRho = rho; | |
029cd327 | 1986 | fHoleX0 = radLength; |
5443e65e | 1987 | } |
1988 | ||
46d29e70 | 1989 | |
5443e65e | 1990 | //_______________________________________________________ |
1991 | AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) | |
1992 | { | |
1993 | // | |
1994 | // AliTRDtrackingSector Constructor | |
1995 | // | |
a5cadd36 | 1996 | AliTRDpadPlane *padPlane = 0; |
1997 | ||
5443e65e | 1998 | fGeom = geo; |
1999 | fPar = par; | |
2000 | fGeomSector = gs; | |
2001 | fTzeroShift = 0.13; | |
2002 | fN = 0; | |
3c625a9b | 2003 | // |
2004 | // get holes description from geometry | |
2005 | Bool_t holes[AliTRDgeometry::kNcham]; | |
2006 | //printf("sector\t%d\t",gs); | |
2007 | for (Int_t icham=0; icham<AliTRDgeometry::kNcham;icham++){ | |
2008 | holes[icham] = fGeom->IsHole(0,icham,gs); | |
2009 | //printf("%d",holes[icham]); | |
2010 | } | |
2011 | //printf("\n"); | |
2012 | ||
029cd327 | 2013 | for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; |
5443e65e | 2014 | |
2015 | ||
2016 | AliTRDpropagationLayer* ppl; | |
2017 | ||
029cd327 | 2018 | Double_t x, xin, xout, dx, rho, radLength; |
5443e65e | 2019 | Int_t steps; |
46d29e70 | 2020 | |
5443e65e | 2021 | // set time bins in the gas of the TPC |
46d29e70 | 2022 | |
5443e65e | 2023 | xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; |
029cd327 | 2024 | rho = 0.9e-3; radLength = 28.94; |
5443e65e | 2025 | |
2026 | for(Int_t i=0; i<steps; i++) { | |
2027 | x = xin + i*dx + dx/2; | |
029cd327 | 2028 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2029 | InsertLayer(ppl); |
46d29e70 | 2030 | } |
2031 | ||
5443e65e | 2032 | // set time bins in the outer field cage vessel |
46d29e70 | 2033 | |
029cd327 | 2034 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2035 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2036 | InsertLayer(ppl); |
46d29e70 | 2037 | |
029cd327 | 2038 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2039 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2040 | InsertLayer(ppl); |
2041 | ||
029cd327 | 2042 | dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 2043 | steps = 5; dx = (xout - xin)/steps; |
2044 | for(Int_t i=0; i<steps; i++) { | |
2045 | x = xin + i*dx + dx/2; | |
029cd327 | 2046 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2047 | InsertLayer(ppl); |
2048 | } | |
2049 | ||
029cd327 | 2050 | dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
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); |
0a29d0f1 | 2057 | |
5443e65e | 2058 | |
2059 | // set time bins in CO2 | |
2060 | ||
2061 | xin = xout; xout = 275.0; | |
2062 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2063 | rho = 1.977e-3; radLength = 36.2; |
5443e65e | 2064 | |
2065 | for(Int_t i=0; i<steps; i++) { | |
2066 | x = xin + i*dx + dx/2; | |
029cd327 | 2067 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2068 | InsertLayer(ppl); |
2069 | } | |
2070 | ||
2071 | // set time bins in the outer containment vessel | |
2072 | ||
029cd327 | 2073 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2074 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2075 | InsertLayer(ppl); |
2076 | ||
029cd327 | 2077 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2078 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2079 | InsertLayer(ppl); |
2080 | ||
029cd327 | 2081 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2082 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2083 | InsertLayer(ppl); |
2084 | ||
029cd327 | 2085 | dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex |
5443e65e | 2086 | steps = 10; dx = (xout - xin)/steps; |
2087 | for(Int_t i=0; i<steps; i++) { | |
2088 | x = xin + i*dx + dx/2; | |
029cd327 | 2089 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2090 | InsertLayer(ppl); |
2091 | } | |
2092 | ||
029cd327 | 2093 | dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg |
2094 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2095 | InsertLayer(ppl); |
2096 | ||
029cd327 | 2097 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar |
2098 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2099 | InsertLayer(ppl); |
2100 | ||
029cd327 | 2101 | dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al |
2102 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
5443e65e | 2103 | InsertLayer(ppl); |
2104 | ||
2105 | Double_t xtrd = (Double_t) fGeom->Rmin(); | |
2106 | ||
2107 | // add layers between TPC and TRD (Air temporarily) | |
2108 | xin = xout; xout = xtrd; | |
2109 | steps = 50; dx = (xout - xin)/steps; | |
029cd327 | 2110 | rho = 1.2e-3; radLength = 36.66; |
5443e65e | 2111 | |
2112 | for(Int_t i=0; i<steps; i++) { | |
2113 | x = xin + i*dx + dx/2; | |
029cd327 | 2114 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2115 | InsertLayer(ppl); |
2116 | } | |
2117 | ||
2118 | ||
3c625a9b | 2119 | // Double_t alpha=AliTRDgeometry::GetAlpha(); |
5443e65e | 2120 | |
2121 | // add layers for each of the planes | |
2122 | ||
2123 | Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell | |
2124 | Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes | |
2125 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2126 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
2127 | Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator | |
2128 | Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; | |
2129 | Double_t dxPlane = dxTEC + dxSpace; | |
2130 | ||
029cd327 | 2131 | Int_t tb, tbIndex; |
2132 | const Int_t kNchambers = AliTRDgeometry::Ncham(); | |
3c625a9b | 2133 | Double_t ymax = 0; |
2134 | //, holeYmax = 0; | |
2135 | Double_t ymaxsensitive=0; | |
029cd327 | 2136 | Double_t *zc = new Double_t[kNchambers]; |
2137 | Double_t *zmax = new Double_t[kNchambers]; | |
3c625a9b | 2138 | Double_t *zmaxsensitive = new Double_t[kNchambers]; |
2139 | // Double_t holeZmax = 1000.; // the whole sector is missing | |
5443e65e | 2140 | |
5443e65e | 2141 | for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { |
3c625a9b | 2142 | // |
5443e65e | 2143 | // Radiator |
2144 | xin = xtrd + plane * dxPlane; xout = xin + dxRad; | |
029cd327 | 2145 | steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2146 | for(Int_t i=0; i<steps; i++) { |
2147 | x = xin + i*dx + dx/2; | |
3c625a9b | 2148 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2149 | InsertLayer(ppl); |
2150 | } | |
2151 | ||
3c625a9b | 2152 | ymax = fGeom->GetChamberWidth(plane)/2.; |
a5cadd36 | 2153 | // Modidified for new pad plane class, 22.04.05 (C.B.) |
2154 | // ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; | |
2155 | padPlane = fPar->GetPadPlane(plane,0); | |
2156 | ymaxsensitive = (padPlane->GetColSize(1)*padPlane->GetNcols()-4)/2.; | |
7ad19338 | 2157 | |
2158 | // ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; | |
3c625a9b | 2159 | |
029cd327 | 2160 | for(Int_t ch = 0; ch < kNchambers; ch++) { |
2161 | zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; | |
a5cadd36 | 2162 | // |
2163 | // Modidified for new pad plane class, 22.04.05 (C.B.) | |
2164 | //Float_t pad = fPar->GetRowPadSize(plane,ch,0); | |
2165 | Float_t pad = padPlane->GetRowSize(1); | |
7ad19338 | 2166 | //Float_t pad = fPar->GetRowPadSize(plane,ch,0); |
5443e65e | 2167 | Float_t row0 = fPar->GetRow0(plane,ch,0); |
2168 | Int_t nPads = fPar->GetRowMax(plane,ch,0); | |
857b3eb0 | 2169 | zmaxsensitive[ch] = Float_t(nPads)*pad/2.; |
3c625a9b | 2170 | // zc[ch] = (pad * nPads)/2 + row0 - pad/2; |
7ad19338 | 2171 | // zc[ch] = (pad * nPads)/2 + row0; |
2172 | zc[ch] = -(pad * nPads)/2 + row0; | |
3c625a9b | 2173 | //zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW(); |
2174 | ||
5443e65e | 2175 | } |
2176 | ||
7ad19338 | 2177 | dx = fgkDriftCorrection*fPar->GetDriftVelocity() |
ccb4315c | 2178 | / fPar->GetSamplingFrequency(); |
029cd327 | 2179 | rho = 0.00295 * 0.85; radLength = 11.0; |
5443e65e | 2180 | |
2181 | Double_t x0 = (Double_t) fPar->GetTime0(plane); | |
2182 | Double_t xbottom = x0 - dxDrift; | |
2183 | Double_t xtop = x0 + dxAmp; | |
3c625a9b | 2184 | // |
5443e65e | 2185 | // Amplification region |
5443e65e | 2186 | steps = (Int_t) (dxAmp/dx); |
2187 | ||
2188 | for(tb = 0; tb < steps; tb++) { | |
7ad19338 | 2189 | x = x0 + tb * dx + dx/2+ fgkOffsetX; |
029cd327 | 2190 | tbIndex = CookTimeBinIndex(plane, -tb-1); |
2191 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); | |
3c625a9b | 2192 | ppl->SetYmax(ymax,ymaxsensitive); |
2193 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2194 | ppl->SetHoles(holes); | |
5443e65e | 2195 | InsertLayer(ppl); |
2196 | } | |
029cd327 | 2197 | tbIndex = CookTimeBinIndex(plane, -steps); |
5443e65e | 2198 | x = (x + dx/2 + xtop)/2; |
2199 | dx = 2*(xtop-x); | |
029cd327 | 2200 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2201 | ppl->SetYmax(ymax,ymaxsensitive); |
2202 | ppl->SetZ(zc, zmax,zmaxsensitive); | |
2203 | ppl->SetHoles(holes); | |
5443e65e | 2204 | InsertLayer(ppl); |
2205 | ||
2206 | // Drift region | |
7ad19338 | 2207 | |
2208 | dx = fgkDriftCorrection*fPar->GetDriftVelocity() | |
ccb4315c | 2209 | / fPar->GetSamplingFrequency(); |
5443e65e | 2210 | steps = (Int_t) (dxDrift/dx); |
2211 | ||
2212 | for(tb = 0; tb < steps; tb++) { | |
7ad19338 | 2213 | x = x0 - tb * dx - dx/2 + fgkOffsetX; //temporary fix - fix it the parameters |
029cd327 | 2214 | tbIndex = CookTimeBinIndex(plane, tb); |
5443e65e | 2215 | |
029cd327 | 2216 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2217 | ppl->SetYmax(ymax,ymaxsensitive); |
2218 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2219 | ppl->SetHoles(holes); | |
5443e65e | 2220 | InsertLayer(ppl); |
2221 | } | |
029cd327 | 2222 | tbIndex = CookTimeBinIndex(plane, steps); |
5443e65e | 2223 | x = (x - dx/2 + xbottom)/2; |
2224 | dx = 2*(x-xbottom); | |
029cd327 | 2225 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); |
3c625a9b | 2226 | ppl->SetYmax(ymax,ymaxsensitive); |
2227 | ppl->SetZ(zc, zmax, zmaxsensitive); | |
2228 | ppl->SetHoles(holes); | |
5443e65e | 2229 | InsertLayer(ppl); |
2230 | ||
2231 | // Pad Plane | |
029cd327 | 2232 | xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; |
2233 | ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); | |
3c625a9b | 2234 | ppl->SetYmax(ymax,ymaxsensitive); |
2235 | ppl->SetZ(zc, zmax,zmax); | |
2236 | ppl->SetHoles(holes); | |
5443e65e | 2237 | InsertLayer(ppl); |
2238 | ||
2239 | // Rohacell | |
2240 | xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; | |
029cd327 | 2241 | steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; |
5443e65e | 2242 | for(Int_t i=0; i<steps; i++) { |
2243 | x = xin + i*dx + dx/2; | |
029cd327 | 2244 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
3c625a9b | 2245 | ppl->SetYmax(ymax,ymaxsensitive); |
2246 | ppl->SetZ(zc, zmax,zmax); | |
2247 | ppl->SetHoles(holes); | |
5443e65e | 2248 | InsertLayer(ppl); |
2249 | } | |
2250 | ||
2251 | // Space between the chambers, air | |
2252 | xin = xout; xout = xtrd + (plane + 1) * dxPlane; | |
029cd327 | 2253 | steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2254 | for(Int_t i=0; i<steps; i++) { |
2255 | x = xin + i*dx + dx/2; | |
029cd327 | 2256 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2257 | InsertLayer(ppl); |
2258 | } | |
2259 | } | |
2260 | ||
2261 | // Space between the TRD and RICH | |
2262 | Double_t xRICH = 500.; | |
2263 | xin = xout; xout = xRICH; | |
029cd327 | 2264 | steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; |
5443e65e | 2265 | for(Int_t i=0; i<steps; i++) { |
2266 | x = xin + i*dx + dx/2; | |
029cd327 | 2267 | ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1); |
5443e65e | 2268 | InsertLayer(ppl); |
2269 | } | |
2270 | ||
2271 | MapTimeBinLayers(); | |
029cd327 | 2272 | delete [] zc; |
2273 | delete [] zmax; | |
4f1c04d3 | 2274 | delete [] zmaxsensitive; |
5443e65e | 2275 | |
2276 | } | |
2277 | ||
2278 | //______________________________________________________ | |
2279 | ||
029cd327 | 2280 | Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t localTB) const |
5443e65e | 2281 | { |
2282 | // | |
2283 | // depending on the digitization parameters calculates "global" | |
029cd327 | 2284 | // time bin index for timebin <localTB> in plane <plane> |
5443e65e | 2285 | // |
2286 | ||
2287 | Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region | |
2288 | Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region | |
7ad19338 | 2289 | |
2290 | Double_t dx = fgkDriftCorrection*(Double_t) fPar->GetDriftVelocity() | |
ccb4315c | 2291 | / fPar->GetSamplingFrequency(); |
5443e65e | 2292 | |
2293 | Int_t tbAmp = fPar->GetTimeBefore(); | |
2294 | Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); | |
b3a5a838 | 2295 | if(kTRUE) maxAmp = 0; // intentional until we change parameter class |
5443e65e | 2296 | Int_t tbDrift = fPar->GetTimeMax(); |
2297 | Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); | |
2298 | ||
029cd327 | 2299 | Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); |
5443e65e | 2300 | |
029cd327 | 2301 | Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); |
5443e65e | 2302 | |
029cd327 | 2303 | if((localTB < 0) && |
2304 | (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; | |
2305 | if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; | |
5443e65e | 2306 | |
2307 | return gtb; | |
2308 | ||
2309 | ||
2310 | } | |
2311 | ||
2312 | //______________________________________________________ | |
2313 | ||
2314 | void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() | |
2315 | { | |
2316 | // | |
2317 | // For all sensitive time bins sets corresponding layer index | |
2318 | // in the array fTimeBins | |
2319 | // | |
2320 | ||
2321 | Int_t index; | |
2322 | ||
2323 | for(Int_t i = 0; i < fN; i++) { | |
2324 | index = fLayers[i]->GetTimeBinIndex(); | |
2325 | ||
2326 | // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); | |
2327 | ||
2328 | if(index < 0) continue; | |
029cd327 | 2329 | if(index >= (Int_t) kMaxTimeBinIndex) { |
5443e65e | 2330 | printf("*** AliTRDtracker::MapTimeBinLayers: \n"); |
2331 | printf(" index %d exceeds allowed maximum of %d!\n", | |
029cd327 | 2332 | index, kMaxTimeBinIndex-1); |
5443e65e | 2333 | continue; |
2334 | } | |
2335 | fTimeBinIndex[index] = i; | |
2336 | } | |
2337 | ||
2338 | Double_t x1, dx1, x2, dx2, gap; | |
2339 | ||
2340 | for(Int_t i = 0; i < fN-1; i++) { | |
2341 | x1 = fLayers[i]->GetX(); | |
2342 | dx1 = fLayers[i]->GetdX(); | |
2343 | x2 = fLayers[i+1]->GetX(); | |
2344 | dx2 = fLayers[i+1]->GetdX(); | |
2345 | gap = (x2 - dx2/2) - (x1 + dx1/2); | |
7c1698cb | 2346 | // if(gap < -0.01) { |
2347 | // printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); | |
2348 | // printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); | |
2349 | // } | |
2350 | // if(gap > 0.01) { | |
2351 | // printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); | |
2352 | // printf(" (%f - %f) - (%f + %f) = %f\n", | |
2353 | // x2, dx2/2, x1, dx1, gap); | |
2354 | // } | |
5443e65e | 2355 | } |
2356 | } | |
2357 | ||
2358 | ||
2359 | //______________________________________________________ | |
2360 | ||
2361 | ||
2362 | Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const | |
2363 | { | |
2364 | // | |
2365 | // Returns the number of time bin which in radial position is closest to <x> | |
2366 | // | |
2367 | ||
2368 | if(x >= fLayers[fN-1]->GetX()) return fN-1; | |
2369 | if(x <= fLayers[0]->GetX()) return 0; | |
2370 | ||
2371 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2372 | for (; b<e; m=(b+e)/2) { | |
2373 | if (x > fLayers[m]->GetX()) b=m+1; | |
2374 | else e=m; | |
2375 | } | |
2376 | if(TMath::Abs(x - fLayers[m]->GetX()) > | |
2377 | TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; | |
2378 | else return m; | |
2379 | ||
2380 | } | |
2381 | ||
2382 | //______________________________________________________ | |
2383 | ||
2384 | Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const | |
2385 | { | |
2386 | // | |
2387 | // Returns number of the innermost SENSITIVE propagation layer | |
2388 | // | |
2389 | ||
2390 | return GetLayerNumber(0); | |
2391 | } | |
2392 | ||
2393 | //______________________________________________________ | |
2394 | ||
2395 | Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const | |
2396 | { | |
2397 | // | |
2398 | // Returns number of the outermost SENSITIVE time bin | |
2399 | // | |
2400 | ||
2401 | return GetLayerNumber(GetNumberOfTimeBins() - 1); | |
46d29e70 | 2402 | } |
2403 | ||
5443e65e | 2404 | //______________________________________________________ |
2405 | ||
2406 | Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const | |
2407 | { | |
2408 | // | |
2409 | // Returns number of SENSITIVE time bins | |
2410 | // | |
2411 | ||
2412 | Int_t tb, layer; | |
029cd327 | 2413 | for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { |
5443e65e | 2414 | layer = GetLayerNumber(tb); |
2415 | if(layer>=0) break; | |
2416 | } | |
2417 | return tb+1; | |
2418 | } | |
2419 | ||
2420 | //______________________________________________________ | |
2421 | ||
2422 | void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) | |
2423 | { | |
2424 | // | |
2425 | // Insert layer <pl> in fLayers array. | |
2426 | // Layers are sorted according to X coordinate. | |
2427 | ||
029cd327 | 2428 | if ( fN == ((Int_t) kMaxLayersPerSector)) { |
5443e65e | 2429 | printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); |
2430 | return; | |
2431 | } | |
2432 | if (fN==0) {fLayers[fN++] = pl; return;} | |
2433 | Int_t i=Find(pl->GetX()); | |
2434 | ||
2435 | memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); | |
2436 | fLayers[i]=pl; fN++; | |
2437 | ||
2438 | } | |
2439 | ||
2440 | //______________________________________________________ | |
2441 | ||
2442 | Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const | |
2443 | { | |
2444 | // | |
2445 | // Returns index of the propagation layer nearest to X | |
2446 | // | |
2447 | ||
2448 | if (x <= fLayers[0]->GetX()) return 0; | |
2449 | if (x > fLayers[fN-1]->GetX()) return fN; | |
2450 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2451 | for (; b<e; m=(b+e)/2) { | |
2452 | if (x > fLayers[m]->GetX()) b=m+1; | |
2453 | else e=m; | |
2454 | } | |
2455 | return m; | |
2456 | } | |
2457 | ||
7ad19338 | 2458 | |
2459 | ||
2460 | ||
2461 | ||
3c625a9b | 2462 | //______________________________________________________ |
2463 | void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) | |
2464 | { | |
2465 | // | |
2466 | // set centers and the width of sectors | |
2467 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ | |
2468 | fZc[icham] = center[icham]; | |
2469 | fZmax[icham] = w[icham]; | |
2470 | fZmaxSensitive[icham] = wsensitive[icham]; | |
2471 | // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); | |
2472 | } | |
2473 | } | |
5443e65e | 2474 | //______________________________________________________ |
2475 | ||
3c625a9b | 2476 | void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) |
2477 | { | |
2478 | // | |
2479 | // set centers and the width of sectors | |
2480 | fHole = kFALSE; | |
2481 | for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ | |
2482 | fIsHole[icham] = holes[icham]; | |
2483 | if (holes[icham]) fHole = kTRUE; | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | ||
2488 | ||
7ad19338 | 2489 | Bool_t AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( |
029cd327 | 2490 | Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, |
a9814c09 | 2491 | Bool_t &lookForCluster) const |
5443e65e | 2492 | { |
2493 | // | |
029cd327 | 2494 | // Returns radial step <dx>, density <rho>, rad. length <radLength>, |
5443e65e | 2495 | // and sensitivity <lookForCluster> in point <y,z> |
2496 | // | |
2497 | ||
4f1c04d3 | 2498 | Double_t alpha = AliTRDgeometry::GetAlpha(); |
2499 | Double_t ymax = fX*TMath::Tan(0.5*alpha); | |
2500 | ||
2501 | ||
5443e65e | 2502 | dx = fdX; |
2503 | rho = fRho; | |
029cd327 | 2504 | radLength = fX0; |
5443e65e | 2505 | lookForCluster = kFALSE; |
4f1c04d3 | 2506 | Bool_t cross =kFALSE; |
2507 | // | |
2508 | // | |
2509 | if ( (ymax-TMath::Abs(y))<3.){ //cross material | |
2510 | rho*=40.; | |
2511 | radLength*=40.; | |
2512 | cross=kTRUE; | |
2513 | } | |
3c625a9b | 2514 | // |
2515 | // check dead regions in sensitive volume | |
3c625a9b | 2516 | // |
4f1c04d3 | 2517 | Int_t zone=-1; |
2518 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { | |
2519 | if (TMath::Abs(z - fZc[ch]) > fZmax[ch]) continue; //not in given zone | |
2520 | // | |
2521 | if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){ | |
2522 | if (fTimeBinIndex>=0) lookForCluster = !(fIsHole[zone]); | |
2523 | if(TMath::Abs(y) > fYmaxSensitive){ | |
2524 | lookForCluster = kFALSE; | |
2525 | } | |
2526 | if (fIsHole[zone]) { | |
2527 | //if hole | |
2528 | rho = 1.29e-3; | |
2529 | radLength = 36.66; | |
2530 | } | |
2531 | }else{ | |
7ad19338 | 2532 | cross = kTRUE; rho = 2.7; radLength = 24.01; //aluminium in between |
4f1c04d3 | 2533 | } |
5443e65e | 2534 | } |
3c625a9b | 2535 | // |
7ad19338 | 2536 | if (fTimeBinIndex>=0) return cross; |
4f1c04d3 | 2537 | // |
3c625a9b | 2538 | // |
5443e65e | 2539 | // check hole |
7ad19338 | 2540 | if (fHole==kFALSE) return cross; |
3c625a9b | 2541 | // |
2542 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { | |
2543 | if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){ | |
2544 | if (fIsHole[ch]) { | |
2545 | //if hole | |
2546 | rho = 1.29e-3; | |
2547 | radLength = 36.66; | |
4f1c04d3 | 2548 | } |
3c625a9b | 2549 | } |
2550 | } | |
7ad19338 | 2551 | return cross; |
5443e65e | 2552 | } |
2553 | ||
3c625a9b | 2554 | Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const |
2555 | { | |
2556 | // | |
2557 | // | |
2558 | if (fTimeBinIndex < 0) return -20; //unknown | |
2559 | Int_t zone=-10; // dead zone | |
2560 | for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { | |
2561 | if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) | |
2562 | zone = ch; | |
2563 | } | |
2564 | return zone; | |
2565 | } | |
2566 | ||
2567 | ||
5443e65e | 2568 | //______________________________________________________ |
2569 | ||
2570 | void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, | |
a9814c09 | 2571 | UInt_t index) { |
5443e65e | 2572 | |
2573 | // Insert cluster in cluster array. | |
2574 | // Clusters are sorted according to Y coordinate. | |
2575 | ||
2576 | if(fTimeBinIndex < 0) { | |
2577 | printf("*** attempt to insert cluster into non-sensitive time bin!\n"); | |
2578 | return; | |
2579 | } | |
2580 | ||
029cd327 | 2581 | if (fN== (Int_t) kMaxClusterPerTimeBin) { |
5443e65e | 2582 | printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); |
2583 | return; | |
2584 | } | |
2585 | if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} | |
2586 | Int_t i=Find(c->GetY()); | |
2587 | memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); | |
2588 | memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); | |
2589 | fIndex[i]=index; fClusters[i]=c; fN++; | |
2590 | } | |
2591 | ||
2592 | //______________________________________________________ | |
2593 | ||
2594 | Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { | |
2595 | ||
2596 | // Returns index of the cluster nearest in Y | |
2597 | ||
2598 | if (y <= fClusters[0]->GetY()) return 0; | |
2599 | if (y > fClusters[fN-1]->GetY()) return fN; | |
2600 | Int_t b=0, e=fN-1, m=(b+e)/2; | |
2601 | for (; b<e; m=(b+e)/2) { | |
2602 | if (y > fClusters[m]->GetY()) b=m+1; | |
2603 | else e=m; | |
2604 | } | |
2605 | return m; | |
2606 | } | |
2607 | ||
7ad19338 | 2608 | Int_t AliTRDtracker::AliTRDpropagationLayer::FindNearestCluster(Double_t y, Double_t z, Double_t maxroad) const |
2609 | { | |
2610 | // | |
2611 | // Returns index of the cluster nearest to the given y,z | |
2612 | // | |
2613 | Int_t index = -1; | |
2614 | Int_t maxn = fN; | |
2615 | Double_t mindist = maxroad; | |
2616 | Float_t padlength =-1; | |
2617 | // | |
2618 | for (Int_t i=Find(y-maxroad); i<maxn; i++) { | |
2619 | AliTRDcluster* c=(AliTRDcluster*)(fClusters[i]); | |
2620 | if (padlength<0){ | |
2621 | padlength = TMath::Sqrt(c->GetSigmaZ2()*12); | |
2622 | } | |
2623 | // | |
2624 | if (c->GetY() > y+maxroad) break; | |
2625 | if((c->GetZ()-z)*(c->GetZ()-z) > padlength*0.75) continue; | |
2626 | if (TMath::Abs(c->GetY()-y)<mindist){ | |
2627 | mindist = TMath::Abs(c->GetY()-y); | |
2628 | index = GetIndex(i); | |
2629 | } | |
2630 | } | |
2631 | return index; | |
2632 | } | |
2633 | ||
2634 | ||
fd621f36 | 2635 | //--------------------------------------------------------- |
5443e65e | 2636 | |
fd621f36 | 2637 | Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { |
2638 | // | |
2639 | // Returns correction factor for tilted pads geometry | |
2640 | // | |
a5cadd36 | 2641 | AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0); |
2642 | Double_t h01 = sin(TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); | |
7ad19338 | 2643 | //Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); |
fd621f36 | 2644 | Int_t det = c->GetDetector(); |
2645 | Int_t plane = fGeom->GetPlane(det); | |
b3a5a838 | 2646 | |
c5a8e3df | 2647 | //if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; |
2648 | if((plane == 0) || (plane == 2) || (plane == 4)) h01=-h01; | |
b8dc2353 | 2649 | |
2650 | if(fNoTilt) h01 = 0; | |
fd621f36 | 2651 | |
2652 | return h01; | |
2653 | } | |
5443e65e | 2654 | |
c630aafd | 2655 | |
eab5961e | 2656 | void AliTRDtracker::CookdEdxTimBin(AliTRDtrack& TRDtrack) |
2657 | { | |
2658 | // *** ADDED TO GET MORE INFORMATION FOR TRD PID ---- PS | |
2659 | // This is setting fdEdxPlane and fTimBinPlane | |
2660 | // Sums up the charge in each plane for track TRDtrack and also get the | |
2661 | // Time bin for Max. Cluster | |
2662 | // Prashant Shukla (shukla@physi.uni-heidelberg.de) | |
2663 | ||
2664 | // const Int_t kNPlane = AliTRDgeometry::Nplan(); | |
2665 | // const Int_t kNPlane = 6; | |
2666 | Double_t clscharge[kNPlane], maxclscharge[kNPlane]; | |
2667 | Int_t nCluster[kNPlane], timebin[kNPlane]; | |
2668 | ||
2669 | //Initialization of cluster charge per plane. | |
2670 | for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2671 | clscharge[iPlane] = 0.0; | |
2672 | nCluster[iPlane] = 0; | |
2673 | timebin[iPlane] = -1; | |
2674 | maxclscharge[iPlane] = 0.0; | |
2675 | } | |
2676 | ||
2677 | // Loop through all clusters associated to track TRDtrack | |
2678 | Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack | |
2679 | for (Int_t iClus = 0; iClus < nClus; iClus++) { | |
2680 | Double_t charge = TRDtrack.GetClusterdQdl(iClus); | |
2681 | Int_t index = TRDtrack.GetClusterIndex(iClus); | |
2682 | AliTRDcluster *TRDcluster = (AliTRDcluster *) GetCluster(index); | |
2683 | if (!TRDcluster) continue; | |
2684 | Int_t tb = TRDcluster->GetLocalTimeBin(); | |
2685 | if (!tb) continue; | |
2686 | Int_t detector = TRDcluster->GetDetector(); | |
2687 | Int_t iPlane = fGeom->GetPlane(detector); | |
2688 | clscharge[iPlane] = clscharge[iPlane]+charge; | |
2689 | if(charge > maxclscharge[iPlane]) { | |
2690 | maxclscharge[iPlane] = charge; | |
2691 | timebin[iPlane] = tb; | |
2692 | } | |
2693 | nCluster[iPlane]++; | |
2694 | } // end of loop over cluster | |
2695 | ||
2696 | // Setting the fdEdxPlane and fTimBinPlane variabales | |
2697 | Double_t Total_ch = 0; | |
2698 | for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
bd50219c | 2699 | // Quality control of TRD track. |
2700 | if (nCluster[iPlane]<= 5) { | |
2701 | clscharge[iPlane]=0.0; | |
2702 | timebin[iPlane]=-1; | |
2703 | } | |
eab5961e | 2704 | if (nCluster[iPlane]) clscharge[iPlane] /= nCluster[iPlane]; |
2705 | TRDtrack.SetPIDsignals(clscharge[iPlane], iPlane); | |
2706 | TRDtrack.SetPIDTimBin(timebin[iPlane], iPlane); | |
2707 | Total_ch= Total_ch+clscharge[iPlane]; | |
2708 | } | |
2709 | // Int_t i; | |
2710 | // Int_t nc=TRDtrack.GetNumberOfClusters(); | |
2711 | // Float_t dedx=0; | |
2712 | // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i); | |
2713 | // dedx /= nc; | |
2714 | // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { | |
2715 | // TRDtrack.SetPIDsignals(dedx, iPlane); | |
2716 | // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane); | |
2717 | // } | |
2718 | ||
2719 | } // end of function | |
2720 | ||
c630aafd | 2721 | |
7ad19338 | 2722 | Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack * track, Int_t *clusters,AliTRDtracklet&tracklet) |
4f1c04d3 | 2723 | { |
2724 | // | |
2725 | // | |
2726 | // try to find nearest clusters to the track in timebins from t0 to t1 | |
2727 | // | |
2728 | // | |
7ad19338 | 2729 | // |
2730 | // correction coeficients - depends on TRD parameters - to be changed according it | |
2731 | // | |
2732 | ||
2733 | Double_t x[100],yt[100],zt[100]; | |
2734 | Double_t xmean=0; //reference x | |
2735 | Double_t dz[10][100],dy[10][100]; | |
2736 | Float_t zmean[100], nmean[100]; | |
2737 | Int_t clfound=0; | |
2738 | Int_t indexes[10][100]; // indexes of the clusters in the road | |
2739 | AliTRDcluster *cl[10][100]; // pointers to the clusters in the road | |
2740 | Int_t best[10][100]; // index of best matching cluster | |
2741 | // | |
2742 | // | |
2743 | TClonesArray array0("AliTRDcluster",1); | |
2744 | TClonesArray array1("AliTRDcluster",1); | |
2745 | for (Int_t it=0;it<t1-t0; it++){ | |
4f1c04d3 | 2746 | x[it]=0; |
2747 | yt[it]=0; | |
2748 | zt[it]=0; | |
7ad19338 | 2749 | clusters[it+t0]=-2; |
2750 | zmean[it]=0; | |
2751 | nmean[it]=0; | |
2752 | // | |
2753 | for (Int_t ih=0;ih<10;ih++){ | |
2754 | indexes[ih][it]=-2; //reset indexes1 | |
2755 | cl[ih][it]=0; | |
2756 | dz[ih][it]=-100; | |
2757 | dy[ih][it]=-100; | |
2758 | best[ih][it]=0; | |
2759 | } | |
4f1c04d3 | 2760 | } |
2761 | // | |
2762 | Double_t x0 = track->GetX(); | |
7ad19338 | 2763 | Double_t sigmaz = TMath::Sqrt(track->GetSigmaZ2()); |
4f1c04d3 | 2764 | Int_t nall=0; |
2765 | Int_t nfound=0; | |
7ad19338 | 2766 | Double_t h01 =0; |
2767 | Int_t plane =-1; | |
2768 | Float_t padlength=0; | |
2769 | AliTRDtrack track2(*track); | |
2770 | Float_t snpy = track->GetSnp(); | |
2771 | Float_t tany = TMath::Sqrt(snpy*snpy/(1.-snpy*snpy)); | |
2772 | if (snpy<0) tany*=-1; | |
2773 | // | |
2774 | Double_t sy2=ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt()); | |
2775 | Double_t sz2=ExpectedSigmaZ2(x0,track->GetTgl()); | |
2776 | Double_t road = 15.*sqrt(track->GetSigmaY2() + sy2); | |
2777 | if (road>6.) road=6.; | |
4f1c04d3 | 2778 | |
7ad19338 | 2779 | // |
2780 | for (Int_t it=0;it<t1-t0;it++){ | |
2781 | Double_t maxChi2[2]={fgkMaxChi2,fgkMaxChi2}; | |
2782 | AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(it+t0)); | |
4f1c04d3 | 2783 | if (timeBin==0) continue; // no indexes1 |
2784 | Int_t maxn = timeBin; | |
2785 | x[it] = timeBin.GetX(); | |
7ad19338 | 2786 | track2.PropagateTo(x[it]); |
2787 | yt[it] = track2.GetY(); | |
2788 | zt[it] = track2.GetZ(); | |
2789 | ||
2790 | Double_t y=yt[it],z=zt[it]; | |
4f1c04d3 | 2791 | Double_t chi2 =1000000; |
2792 | nall++; | |
2793 | // | |
7ad19338 | 2794 | // find 2 nearest cluster at given time bin |
2795 | // | |
2796 | // | |
4f1c04d3 | 2797 | for (Int_t i=timeBin.Find(y-road); i<maxn; i++) { |
2798 | AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]); | |
7ad19338 | 2799 | h01 = GetTiltFactor(c); |
2800 | if (plane<0){ | |
2801 | Int_t det = c->GetDetector(); | |
2802 | plane = fGeom->GetPlane(det); | |
2803 | padlength = TMath::Sqrt(c->GetSigmaZ2()*12.); | |
2804 | } | |
2805 | // if (c->GetLocalTimeBin()==0) continue; | |
4f1c04d3 | 2806 | if (c->GetY() > y+road) break; |
7ad19338 | 2807 | if((c->GetZ()-z)*(c->GetZ()-z) > 12. * sz2) continue; |
2808 | ||
2809 | Double_t dist = TMath::Abs(c->GetZ()-z); | |
2810 | if (dist> (0.5*padlength+6.*sigmaz)) continue; // 6 sigma boundary cut | |
2811 | Double_t cost = 0; | |
2812 | // | |
2813 | if (dist> (0.5*padlength-sigmaz)){ // sigma boundary cost function | |
2814 | cost = (dist-0.5*padlength)/(2.*sigmaz); | |
2815 | if (cost>-1) cost= (cost+1.)*(cost+1.); | |
2816 | else cost=0; | |
2817 | } | |
2818 | // Int_t label = TMath::Abs(track->GetLabel()); | |
2819 | // if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue; | |
2820 | chi2=track2.GetPredictedChi2(c,h01)+cost; | |
2821 | // | |
2822 | clfound++; | |
2823 | if (chi2 > maxChi2[1]) continue; | |
2824 | ||
2825 | for (Int_t ih=2;ih<9; ih++){ //store the clusters in the road | |
2826 | if (cl[ih][it]==0){ | |
2827 | cl[ih][it] = c; | |
2828 | indexes[ih][it] =timeBin.GetIndex(i); // index - 9 - reserved for outliers | |
2829 | break; | |
2830 | } | |
4f1c04d3 | 2831 | } |
7ad19338 | 2832 | // |
2833 | if (chi2 <maxChi2[0]){ | |
2834 | maxChi2[1] = maxChi2[0]; | |
2835 | maxChi2[0] = chi2; | |
2836 | indexes[1][it] = indexes[0][it]; | |
2837 | cl[1][it] = cl[0][it]; | |
2838 | indexes[0][it] = timeBin.GetIndex(i); | |
2839 | cl[0][it] = c; | |
2840 | continue; | |
2841 | } | |
2842 | maxChi2[1]=chi2; | |
2843 | cl[1][it] = c; | |
2844 | indexes[1][it] =timeBin.GetIndex(i); | |
2845 | } | |
2846 | if (cl[0][it]){ | |
2847 | nfound++; | |
2848 | xmean += x[it]; | |
2849 | } | |
4f1c04d3 | 2850 | } |
2851 | // | |
7ad19338 | 2852 | if (nfound<4) return 0; |
2853 | xmean /=Float_t(nfound); // middle x | |
2854 | track2.PropagateTo(xmean); // propagate track to the center | |
4f1c04d3 | 2855 | // |
2856 | // choose one of the variants | |
2857 | // | |
7ad19338 | 2858 | Int_t changes[10]; |
2859 | Float_t sumz = 0; | |
2860 | Float_t sum = 0; | |
2861 | Double_t sumdy = 0; | |
2862 | Double_t sumdy2 = 0; | |
2863 | Double_t sumx = 0; | |
2864 | Double_t sumxy = 0; | |
2865 | Double_t sumx2 = 0; | |
2866 | Double_t mpads = 0; | |
2867 | // | |
2868 | Int_t ngood[10]; | |
2869 | Int_t nbad[10]; | |
2870 | // | |
2871 | Double_t meanz[10]; | |
2872 | Double_t moffset[10]; // mean offset | |
2873 | Double_t mean[10]; // mean value | |
2874 | Double_t angle[10]; // angle | |
2875 | // | |
2876 | Double_t smoffset[10]; // sigma of mean offset | |
2877 | Double_t smean[10]; // sigma of mean value | |
2878 | Double_t sangle[10]; // sigma of angle | |
2879 | Double_t smeanangle[10]; // correlation | |
2880 | // | |
2881 | Double_t sigmas[10]; | |
2882 | Double_t tchi2s[10]; // chi2s for tracklet | |
2883 | // | |
2884 | // calculate zmean | |
2885 | // | |
2886 | for (Int_t it=0;it<t1-t0;it++){ | |
2887 | if (!cl[0][it]) continue; | |
2888 | for (Int_t dt=-3;dt<=3;dt++){ | |
2889 | if (it+dt<0) continue; | |
2890 | if (it+dt>t1) continue; | |
2891 | if (!cl[0][it+dt]) continue; | |
2892 | zmean[it]+=cl[0][it+dt]->GetZ(); | |
2893 | nmean[it]+=1.; | |
2894 | } | |
2895 | zmean[it]/=nmean[it]; | |
2896 | } | |
2897 | // | |
2898 | for (Int_t it=0; it<t1-t0;it++){ | |
2899 | best[0][it]=0; | |
2900 | for (Int_t ih=0;ih<10;ih++){ | |
2901 | dz[ih][it]=-100; | |
2902 | dy[ih][it]=-100; | |
4f1c04d3 | 2903 | if (!cl[ih][it]) continue; |
7ad19338 | 2904 | Float_t poscor = fgkCoef*(cl[ih][it]->GetLocalTimeBin() - fgkMean)+fgkOffset; |
2905 | dz[ih][it] = cl[ih][it]->GetZ()- zt[it]; // calculate distance from track in z | |
2906 | dy[ih][it] = cl[ih][it]->GetY()+ dz[ih][it]*h01 - poscor -yt[it]; // in y | |
2907 | } | |
2908 | // minimize changes | |
2909 | if (!cl[0][it]) continue; | |
2910 | if (TMath::Abs(cl[0][it]->GetZ()-zmean[it])> padlength*0.8 &&cl[1][it]) | |
2911 | if (TMath::Abs(cl[1][it]->GetZ()-zmean[it])< padlength*0.5){ | |
2912 | best[0][it]=1; | |
4f1c04d3 | 2913 | } |
7ad19338 | 2914 | } |
2915 | // | |
2916 | // iterative choosing of "best path" | |
2917 | // | |
2918 | // | |
2919 | Int_t label = TMath::Abs(track->GetLabel()); | |
2920 | Int_t bestiter=0; | |
2921 | // | |
2922 | for (Int_t iter=0;iter<9;iter++){ | |
2923 | // | |
2924 | changes[iter]= 0; | |
2925 | sumz = 0; sum=0; sumdy=0;sumdy2=0;sumx=0;sumx2=0;sumxy=0;mpads=0; ngood[iter]=0; nbad[iter]=0; | |
2926 | // linear fit | |
2927 | for (Int_t it=0;it<t1-t0;it++){ | |
2928 | if (!cl[best[iter][it]][it]) continue; | |
2929 | //calculates pad-row changes | |
2930 | Double_t zbefore= cl[best[iter][it]][it]->GetZ(); | |
2931 | Double_t zafter = cl[best[iter][it]][it]->GetZ(); | |
2932 | for (Int_t itd = it-1; itd>=0;itd--) { | |
2933 | if (cl[best[iter][itd]][itd]) { | |
2934 | zbefore= cl[best[iter][itd]][itd]->GetZ(); | |
2935 | break; | |
2936 | } | |
2937 | } | |
2938 | for (Int_t itd = it+1; itd<t1-t0;itd++) { | |
2939 | if (cl[best[iter][itd]][itd]) { | |
2940 | zafter= cl[best[iter][itd]][itd]->GetZ(); | |
2941 | break; | |
2942 | } | |
2943 | } | |
2944 | if (TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore)>0.1&&TMath::Abs(cl[best[iter][it]][it]->GetZ()-zafter)>0.1) changes[iter]++; | |
2945 | // | |
2946 | Double_t dx = x[it]-xmean; // distance to reference x | |
2947 | sumz += cl[best[iter][it]][it]->GetZ(); | |
4f1c04d3 | 2948 | sum++; |
7ad19338 | 2949 | sumdy += dy[best[iter][it]][it]; |
2950 | sumdy2+= dy[best[iter][it]][it]*dy[best[iter][it]][it]; | |
2951 | sumx += dx; | |
2952 | sumx2 += dx*dx; | |
2953 | sumxy += dx*dy[best[iter][it]][it]; | |
2954 | mpads += cl[best[iter][it]][it]->GetNPads(); | |
2955 | if (cl[best[iter][it]][it]->GetLabel(0)==label || cl[best[iter][it]][it]->GetLabel(1)==label||cl[best[iter][it]][it]->GetLabel(2)==label){ | |
2956 | ngood[iter]++; | |
4f1c04d3 | 2957 | } |
2958 | else{ | |
7ad19338 | 2959 | nbad[iter]++; |
4f1c04d3 | 2960 | } |
2961 | } | |
7ad19338 | 2962 | // |
2963 | // calculates line parameters | |
2964 | // | |
2965 | Double_t det = sum*sumx2-sumx*sumx; | |
2966 | angle[iter] = (sum*sumxy-sumx*sumdy)/det; | |
2967 | mean[iter] = (sumx2*sumdy-sumx*sumxy)/det; | |
2968 | meanz[iter] = sumz/sum; | |
2969 | moffset[iter] = sumdy/sum; | |
2970 | mpads /= sum; // mean number of pads | |
2971 | // | |
2972 | // | |
2973 | Double_t sigma2 = 0; // normalized residuals - for line fit | |
2974 | Double_t sigma1 = 0; // normalized residuals - constant fit | |
2975 | // | |
2976 | for (Int_t it=0;it<t1-t0;it++){ | |
2977 | if (!cl[best[iter][it]][it]) continue; | |
2978 | Double_t dx = x[it]-xmean; | |
2979 | Double_t ytr = mean[iter]+angle[iter]*dx; | |
2980 | sigma2 += (dy[best[iter][it]][it]-ytr)*(dy[best[iter][it]][it]-ytr); | |
2981 | sigma1 += (dy[best[iter][it]][it]-moffset[iter])*(dy[best[iter][it]][it]-moffset[iter]); | |
2982 | sum++; | |
4f1c04d3 | 2983 | } |
7ad19338 | 2984 | sigma2 /=(sum-2); // normalized residuals |
2985 | sigma1 /=(sum-1); // normalized residuals | |
2986 | // | |
2987 | smean[iter] = sigma2*(sumx2/det); // estimated error2 of mean | |
2988 | sangle[iter] = sigma2*(sum/det); // estimated error2 of angle | |
2989 | smeanangle[iter] = sigma2*(-sumx/det); // correlation | |
2990 | // | |
2991 | // | |
2992 | sigmas[iter] = TMath::Sqrt(sigma1); // | |
2993 | smoffset[iter]= (sigma1/sum)+0.01*0.01; // sigma of mean offset + unisochronity sigma | |
2994 | // | |
2995 | // iterative choosing of "better path" | |
2996 | // | |
2997 | for (Int_t it=0;it<t1-t0;it++){ | |
2998 | if (!cl[best[iter][it]][it]) continue; | |
2999 | // | |
3000 | Double_t sigmatr2 = smoffset[iter]+0.5*tany*tany; //add unisochronity + angular effect contribution | |
3001 | Double_t sweight = 1./sigmatr2+1./track->fCyy; | |
3002 | Double_t weighty = (moffset[iter]/sigmatr2)/sweight; // weighted mean | |
3003 | Double_t sigmacl = TMath::Sqrt(sigma1*sigma1+track->fCyy); // | |
3004 | Double_t mindist=100000; | |
3005 | Int_t ihbest=0; | |
3006 | for (Int_t ih=0;ih<10;ih++){ | |
3007 | if (!cl[ih][it]) break; | |
3008 | Double_t dist2 = (dy[ih][it]-weighty)/sigmacl; | |
3009 | dist2*=dist2; //chi2 distance | |
3010 | if (dist2<mindist){ | |
3011 | mindist = dist2; | |
3012 | ihbest =ih; | |
3013 | } | |
3014 | } | |
3015 | best[iter+1][it]=ihbest; | |
4f1c04d3 | 3016 | } |
4f1c04d3 | 3017 | // |
7ad19338 | 3018 | // update best hypothesy if better chi2 according tracklet position and angle |
3019 | // | |
3020 | Double_t sy2 = smean[iter] + track->fCyy; | |
3021 | Double_t sa2 = sangle[iter] + track->fCee; | |
3022 | Double_t say = track->fCey; | |
3023 | // Double_t chi20 = mean[bestiter]*mean[bestiter]/sy2+angle[bestiter]*angle[bestiter]/sa2; | |
3024 | // Double_t chi21 = mean[iter]*mean[iter]/sy2+angle[iter]*angle[iter]/sa2; | |
3025 | ||
3026 | Double_t detchi = sy2*sa2-say*say; | |
3027 | Double_t invers[3] = {sa2/detchi, sy2/detchi, -say/detchi}; //inverse value of covariance matrix | |
4f1c04d3 | 3028 | |
7ad19338 | 3029 | Double_t chi20 = mean[bestiter]*mean[bestiter]*invers[0]+angle[bestiter]*angle[bestiter]*invers[1]+ |
3030 | 2.*mean[bestiter]*angle[bestiter]*invers[2]; | |
3031 | Double_t chi21 = mean[iter]*mean[iter]*invers[0]+angle[iter]*angle[iter]*invers[1]+ | |
3032 | 2*mean[iter]*angle[iter]*invers[2]; | |
3033 | tchi2s[iter] =chi21; | |
3034 | // | |
3035 | if (changes[iter]<=changes[bestiter] && chi21<chi20) { | |
3036 | bestiter =iter; | |
3037 | } | |
3038 | } | |
3039 | // | |
3040 | //set clusters | |
3041 | // | |
3042 | Double_t sigma2 = sigmas[0]; // choose as sigma from 0 iteration | |
3043 | //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.; | |
3044 | //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept | |
3045 | ||
3046 | Double_t expectederr = sigma2*sigma2+0.01*0.01; | |
3047 | if (mpads>3.5) expectederr += (mpads-3.5)*0.04; | |
3048 | if (changes[bestiter]>1) expectederr+= changes[bestiter]*0.01; | |
3049 | expectederr+=(0.03*(tany-fgkExB)*(tany-fgkExB))*15; | |
3050 | // if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.; | |
3051 | //expectederr+=10000; | |
3052 | for (Int_t it=0;it<t1-t0;it++){ | |
3053 | if (!cl[best[bestiter][it]][it]) continue; | |
3054 | Float_t poscor = fgkCoef*(cl[best[bestiter][it]][it]->GetLocalTimeBin() - fgkMean)+fgkOffset; | |
3055 | cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // set cluster error | |
3056 | if (!cl[best[bestiter][it]][it]->IsUsed()){ | |
3057 | cl[best[bestiter][it]][it]->SetY( cl[best[bestiter][it]][it]->GetY()-poscor); // ExB corrction correction | |
3058 | cl[best[bestiter][it]][it]->Use(); | |
3059 | } | |
3060 | clusters[it+t0] = indexes[best[bestiter][it]][it]; | |
3061 | } | |
3062 | // | |
3063 | // set tracklet parameters | |
3064 | // | |
3065 | Double_t trackleterr2 = smoffset[bestiter]+0.01*0.01; | |
3066 | if (mpads>3.5) trackleterr2 += (mpads-3.5)*0.04; | |
3067 | trackleterr2+= changes[bestiter]*0.01; | |
3068 | trackleterr2*= TMath::Max(14.-nfound,1.); | |
3069 | trackleterr2+= 0.2*(tany-fgkExB)*(tany-fgkExB); | |
3070 | // | |
3071 | tracklet.Set(xmean, track2.GetY()+moffset[bestiter], meanz[bestiter], track2.GetAlpha(), trackleterr2); //set tracklet parameters | |
3072 | tracklet.SetTilt(h01); | |
3073 | tracklet.SetP0(mean[bestiter]); | |
3074 | tracklet.SetP1(angle[bestiter]); | |
3075 | tracklet.SetN(nfound); | |
3076 | tracklet.SetNCross(changes[bestiter]); | |
3077 | tracklet.SetPlane(plane); | |
3078 | tracklet.SetSigma2(expectederr); | |
3079 | tracklet.SetChi2(tchi2s[bestiter]); | |
3080 | track->fTracklets[plane] = tracklet; | |
3081 | track->fNWrong+=nbad[0]; | |
3082 | // | |
3083 | // Debuging part | |
3084 | // | |
3085 | TTreeSRedirector& cstream = *fDebugStreamer; | |
3086 | AliTRDcluster dummy; | |
3087 | Double_t dy0[100]; | |
3088 | Double_t dyb[100]; | |
3089 | for (Int_t it=0;it<t1-t0;it++){ | |
3090 | dy0[it] = dy[0][it]; | |
3091 | dyb[it] = dy[best[bestiter][it]][it]; | |
3092 | if(cl[0][it]) { | |
3093 | new(array0[it]) AliTRDcluster(*cl[0][it]); | |
3094 | } | |
3095 | else{ | |
3096 | new(array0[it]) AliTRDcluster(dummy); | |
3097 | } | |
3098 | if(cl[best[bestiter][it]][it]) { | |
3099 | new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]); | |
3100 | } | |
3101 | else{ | |
3102 | new(array1[it]) AliTRDcluster(dummy); | |
3103 | } | |
4f1c04d3 | 3104 | } |
7ad19338 | 3105 | TGraph graph0(t1-t0,x,dy0); |
3106 | TGraph graph1(t1-t0,x,dyb); | |
3107 | TGraph graphy(t1-t0,x,yt); | |
3108 | TGraph graphz(t1-t0,x,zt); | |
3109 | // | |
3110 | // | |
3111 | cstream<<"tracklet"<< | |
3112 | "track.="<<track<< // track parameters | |
3113 | "tany="<<tany<< // tangent of the local track angle | |
3114 | "xmean="<<xmean<< // xmean - reference x of tracklet | |
3115 | "tilt="<<h01<< // tilt angle | |
3116 | "nall="<<nall<< // number of foundable clusters | |
3117 | "nfound="<<nfound<< // number of found clusters | |
3118 | "clfound="<<clfound<< // total number of found clusters in road | |
3119 | "mpads="<<mpads<< // mean number of pads per cluster | |
3120 | "plane="<<plane<< // plane number | |
3121 | "road="<<road<< // the width of the used road | |
3122 | "graph0.="<<&graph0<< // x - y = dy for closest cluster | |
3123 | "graph1.="<<&graph1<< // x - y = dy for second closest cluster | |
3124 | "graphy.="<<&graphy<< // y position of the track | |
3125 | "graphz.="<<&graphz<< // z position of the track | |
3126 | "fCl.="<<&array0<< // closest cluster | |
3127 | "fCl2.="<<&array1<< // second closest cluster | |
3128 | // | |
3129 | "bestiter="<<bestiter<< // best iteration number | |
3130 | "tracklet.="<<&tracklet<< // corrspond to the best iteration | |
3131 | "tchi20="<<tchi2s[0]<< // chi2 of cluster in the 0 iteration | |
3132 | "tchi2b="<<tchi2s[bestiter]<< // chi2 of cluster in the best iteration | |
3133 | "sigmas0="<<sigmas[0]<< // residuals sigma | |
3134 | "sigmasb="<<sigmas[bestiter]<< // residulas sigma | |
3135 | // | |
3136 | "ngood0="<<ngood[0]<< // number of good clusters in 0 iteration | |
3137 | "nbad0="<<nbad[0]<< // number of bad clusters in 0 iteration | |
3138 | "ngoodb="<<ngood[bestiter]<< // in best iteration | |
3139 | "nbadb="<<nbad[bestiter]<< // in best iteration | |
3140 | // | |
3141 | "changes0="<<changes[0]<< // changes of pardrows in iteration number 0 | |
3142 | "changesb="<<changes[bestiter]<< // changes of pardrows in best iteration | |
3143 | // | |
3144 | "moffset0="<<moffset[0]<< // offset fixing angle in iter=0 | |
3145 | "smoffset0="<<smoffset[0]<< // sigma of offset fixing angle in iter=0 | |
3146 | "moffsetb="<<moffset[bestiter]<< // offset fixing angle in iter=best | |
3147 | "smoffsetb="<<smoffset[bestiter]<< // sigma of offset fixing angle in iter=best | |
3148 | // | |
3149 | "mean0="<<mean[0]<< // mean dy in iter=0; | |
3150 | "smean0="<<smean[0]<< // sigma of mean dy in iter=0 | |
3151 | "meanb="<<mean[bestiter]<< // mean dy in iter=best | |
3152 | "smeanb="<<smean[bestiter]<< // sigma of mean dy in iter=best | |
3153 | // | |
3154 | "angle0="<<angle[0]<< // angle deviation in the iteration number 0 | |
3155 | "sangle0="<<sangle[0]<< // sigma of angular deviation in iteration number 0 | |
3156 | "angleb="<<angle[bestiter]<< // angle deviation in the best iteration | |
3157 | "sangleb="<<sangle[bestiter]<< // sigma of angle deviation in the best iteration | |
3158 | // | |
3159 | "expectederr="<<expectederr<< // expected error of cluster position | |
3160 | "\n"; | |
3161 | // | |
3162 | // | |
4f1c04d3 | 3163 | return nfound; |
3164 | } | |
3165 | ||
3166 |