Adding task for checking of the TPC dEdx and PID performance
[u/mrichter/AliRoot.git] / TPC / AliTPCseed.cxx
CommitLineData
81e97e0d 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
16
17
18
19//-----------------------------------------------------------------
20// Implementation of the TPC seed class
21// This class is used by the AliTPCtrackerMI class
22// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23//-----------------------------------------------------------------
24#include "TClonesArray.h"
25#include "AliTPCseed.h"
3f82c4f2 26#include "AliTPCReconstructor.h"
0a65832b 27#include "AliTPCClusterParam.h"
7cd8ac3f 28#include "AliTPCCalPad.h"
29#include "AliTPCCalROC.h"
37540068 30#include "AliTPCcalibDB.h"
d080e4a4 31#include "AliTPCParam.h"
7cd8ac3f 32
33
81e97e0d 34
35ClassImp(AliTPCseed)
36
37
38
32fab534 39AliTPCseed::AliTPCseed():
40 AliTPCtrack(),
41 fEsd(0x0),
2928bdf0 42 fClusterOwner(kFALSE),
32fab534 43 fRow(0),
44 fSector(-1),
45 fRelativeSector(-1),
46 fCurrentSigmaY2(1e10),
47 fCurrentSigmaZ2(1e10),
e0e13b88 48 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
49 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 50 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
51 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
e0e13b88 52 //
32fab534 53 fErrorY2(1e10),
54 fErrorZ2(1e10),
55 fCurrentCluster(0x0),
56 fCurrentClusterIndex1(-1),
57 fInDead(kFALSE),
58 fIsSeeding(kFALSE),
59 fNoCluster(0),
60 fSort(0),
61 fBSigned(kFALSE),
62 fSeedType(0),
63 fSeed1(-1),
64 fSeed2(-1),
65 fMAngular(0),
19b00333 66 fCircular(0),
67 fClusterMap(159),
68 fSharedMap(159)
32fab534 69{
81e97e0d 70 //
5c09947e 71 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 72 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
73 for (Int_t i=0;i<3;i++) fKinkIndexes[i]=0;
32fab534 74 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0.2;
75 for (Int_t i=0;i<4;i++) {
76 fDEDX[i] = 0.;
77 fSDEDX[i] = 1e10;
78 fNCDEDX[i] = 0;
79 }
80 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
bfb57b6c 81 // for (Int_t i=0;i<160;i++) fClusterMap[i]=kFALSE;
82 //for (Int_t i=0;i<160;i++) fSharedMap[i]=kFALSE;
83 fClusterMap.ResetAllBits(kFALSE);
84 fSharedMap.ResetAllBits(kFALSE);
85
81e97e0d 86}
32fab534 87
2928bdf0 88AliTPCseed::AliTPCseed(const AliTPCseed &s, Bool_t clusterOwner):
32fab534 89 AliTPCtrack(s),
90 fEsd(0x0),
2928bdf0 91 fClusterOwner(clusterOwner),
32fab534 92 fRow(0),
93 fSector(-1),
94 fRelativeSector(-1),
c07cb486 95 fCurrentSigmaY2(-1),
96 fCurrentSigmaZ2(-1),
e0e13b88 97 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
98 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 99 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
100 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 101 fErrorY2(1e10),
102 fErrorZ2(1e10),
103 fCurrentCluster(0x0),
104 fCurrentClusterIndex1(-1),
105 fInDead(kFALSE),
106 fIsSeeding(kFALSE),
107 fNoCluster(0),
108 fSort(0),
109 fBSigned(kFALSE),
110 fSeedType(0),
111 fSeed1(-1),
112 fSeed2(-1),
113 fMAngular(0),
19b00333 114 fCircular(0),
115 fClusterMap(s.fClusterMap),
116 fSharedMap(s.fSharedMap)
32fab534 117{
81e97e0d 118 //---------------------
119 // dummy copy constructor
120 //-------------------------
2928bdf0 121 for (Int_t i=0;i<160;i++) {
122 fClusterPointer[i]=0;
123 if (fClusterOwner){
124 if (s.fClusterPointer[i])
125 fClusterPointer[i] = new AliTPCclusterMI(*(s.fClusterPointer[i]));
126 }else{
127 fClusterPointer[i] = s.fClusterPointer[i];
128 }
129 fTrackPoints[i] = s.fTrackPoints[i];
130 }
81e97e0d 131 for (Int_t i=0;i<160;i++) fIndex[i] = s.fIndex[i];
5c09947e 132 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=s.fTPCr[i];
133 for (Int_t i=0;i<4;i++) {
134 fDEDX[i] = s.fDEDX[i];
135 fSDEDX[i] = s.fSDEDX[i];
136 fNCDEDX[i] = s.fNCDEDX[i];
137 }
138 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = s.fOverlapLabels[i];
19b00333 139
81e97e0d 140}
5c09947e 141
142
32fab534 143AliTPCseed::AliTPCseed(const AliTPCtrack &t):
144 AliTPCtrack(t),
145 fEsd(0x0),
2928bdf0 146 fClusterOwner(kFALSE),
32fab534 147 fRow(0),
148 fSector(-1),
149 fRelativeSector(-1),
c07cb486 150 fCurrentSigmaY2(-1),
151 fCurrentSigmaZ2(-1),
e0e13b88 152 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
153 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 154 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
155 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 156 fErrorY2(1e10),
157 fErrorZ2(1e10),
158 fCurrentCluster(0x0),
159 fCurrentClusterIndex1(-1),
160 fInDead(kFALSE),
161 fIsSeeding(kFALSE),
162 fNoCluster(0),
163 fSort(0),
164 fBSigned(kFALSE),
165 fSeedType(0),
166 fSeed1(-1),
167 fSeed2(-1),
168 fMAngular(0),
19b00333 169 fCircular(0),
170 fClusterMap(159),
171 fSharedMap(159)
32fab534 172{
81e97e0d 173 //
32fab534 174 // Constructor from AliTPCtrack
175 //
176 fFirstPoint =0;
105b1b81 177 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
81e97e0d 178 for (Int_t i=0;i<160;i++) {
179 fClusterPointer[i] = 0;
180 Int_t index = t.GetClusterIndex(i);
181 if (index>=-1){
182 SetClusterIndex2(i,index);
183 }
184 else{
185 SetClusterIndex2(i,-3);
186 }
187 }
32fab534 188 for (Int_t i=0;i<4;i++) {
189 fDEDX[i] = 0.;
190 fSDEDX[i] = 1e10;
191 fNCDEDX[i] = 0;
192 }
193 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
bfb57b6c 194
195 //for (Int_t i=0;i<160;i++) fClusterMap[i]=kFALSE;
196 //for (Int_t i=0;i<160;i++) fSharedMap[i]=kFALSE;
197 fClusterMap.ResetAllBits(kFALSE);
198 fSharedMap.ResetAllBits(kFALSE);
199
81e97e0d 200}
201
6c94f330 202AliTPCseed::AliTPCseed(Double_t xr, Double_t alpha, const Double_t xx[5],
203 const Double_t cc[15], Int_t index):
204 AliTPCtrack(xr, alpha, xx, cc, index),
32fab534 205 fEsd(0x0),
2928bdf0 206 fClusterOwner(kFALSE),
32fab534 207 fRow(0),
208 fSector(-1),
209 fRelativeSector(-1),
c07cb486 210 fCurrentSigmaY2(-1),
211 fCurrentSigmaZ2(-1),
e0e13b88 212 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
213 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 214 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
215 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 216 fErrorY2(1e10),
217 fErrorZ2(1e10),
218 fCurrentCluster(0x0),
219 fCurrentClusterIndex1(-1),
220 fInDead(kFALSE),
221 fIsSeeding(kFALSE),
222 fNoCluster(0),
223 fSort(0),
224 fBSigned(kFALSE),
225 fSeedType(0),
226 fSeed1(-1),
227 fSeed2(-1),
228 fMAngular(0),
19b00333 229 fCircular(0),
230 fClusterMap(159),
231 fSharedMap(159)
32fab534 232{
233 //
234 // Constructor
81e97e0d 235 //
32fab534 236 fFirstPoint =0;
5c09947e 237 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 238 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
81e97e0d 239 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
32fab534 240 for (Int_t i=0;i<4;i++) {
241 fDEDX[i] = 0.;
242 fSDEDX[i] = 1e10;
243 fNCDEDX[i] = 0;
244 }
245 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 246}
247
248AliTPCseed::~AliTPCseed(){
249 //
250 // destructor
81e97e0d 251 fNoCluster =0;
2928bdf0 252 if (fClusterOwner){
253 for (Int_t icluster=0; icluster<160; icluster++){
254 delete fClusterPointer[icluster];
255 }
256 }
bfb57b6c 257
81e97e0d 258}
179c6296 259//_________________________________________________
316c6cd9 260AliTPCseed & AliTPCseed::operator=(const AliTPCseed &param)
179c6296 261{
262 //
316c6cd9 263 // assignment operator
179c6296 264 //
316c6cd9 265 if(this!=&param){
266 AliTPCtrack::operator=(param);
267 fEsd =param.fEsd;
268 for(Int_t i = 0;i<160;++i)fClusterPointer[i] = param.fClusterPointer[i]; // this is not allocated by AliTPCSeed
269 fClusterOwner = param.fClusterOwner;
270 // leave out fPoint, they are also not copied in the copy ctor...
271 // but deleted in the dtor... strange...
316c6cd9 272 fRow = param.fRow;
273 fSector = param.fSector;
274 fRelativeSector = param.fRelativeSector;
275 fCurrentSigmaY2 = param.fCurrentSigmaY2;
276 fCurrentSigmaZ2 = param.fCurrentSigmaZ2;
277 fErrorY2 = param.fErrorY2;
278 fErrorZ2 = param.fErrorZ2;
279 fCurrentCluster = param.fCurrentCluster; // this is not allocated by AliTPCSeed
280 fCurrentClusterIndex1 = param.fCurrentClusterIndex1;
281 fInDead = param.fInDead;
282 fIsSeeding = param.fIsSeeding;
283 fNoCluster = param.fNoCluster;
284 fSort = param.fSort;
285 fBSigned = param.fBSigned;
286 for(Int_t i = 0;i<4;++i){
287 fDEDX[i] = param.fDEDX[i];
288 fSDEDX[i] = param.fSDEDX[i];
289 fNCDEDX[i] = param.fNCDEDX[i];
290 }
291 for(Int_t i = 0;i<AliPID::kSPECIES;++i)fTPCr[i] = param.fTPCr[i];
292
293 fSeedType = param.fSeedType;
294 fSeed1 = param.fSeed1;
295 fSeed2 = param.fSeed2;
296 for(Int_t i = 0;i<12;++i)fOverlapLabels[i] = param.fOverlapLabels[i];
297 fMAngular = param.fMAngular;
298 fCircular = param.fCircular;
299 for(int i = 0;i<160;++i)fTrackPoints[i] = param.fTrackPoints[i];
300 fClusterMap = param.fClusterMap;
301 fSharedMap = param.fSharedMap;
302 }
179c6296 303 return (*this);
304}
305//____________________________________________________
81e97e0d 306AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
307{
308 //
309 //
310 return &fTrackPoints[i];
311}
312
81e97e0d 313
314
315Double_t AliTPCseed::GetDensityFirst(Int_t n)
316{
317 //
318 //
319 // return cluster for n rows bellow first point
320 Int_t nfoundable = 1;
321 Int_t nfound = 1;
322 for (Int_t i=fLastPoint-1;i>0&&nfoundable<n; i--){
323 Int_t index = GetClusterIndex2(i);
324 if (index!=-1) nfoundable++;
325 if (index>0) nfound++;
326 }
327 if (nfoundable<n) return 0;
328 return Double_t(nfound)/Double_t(nfoundable);
329
330}
331
332
333void AliTPCseed::GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2)
334{
335 // get cluster stat. on given region
336 //
337 found = 0;
338 foundable = 0;
339 shared =0;
340 for (Int_t i=first;i<last; i++){
341 Int_t index = GetClusterIndex2(i);
342 if (index!=-1) foundable++;
6d493ea0 343 if (index&0x8000) continue;
81e97e0d 344 if (fClusterPointer[i]) {
345 found++;
346 }
347 else
348 continue;
349
350 if (fClusterPointer[i]->IsUsed(10)) {
351 shared++;
352 continue;
353 }
354 if (!plus2) continue; //take also neighborhoud
355 //
356 if ( (i>0) && fClusterPointer[i-1]){
357 if (fClusterPointer[i-1]->IsUsed(10)) {
358 shared++;
359 continue;
360 }
361 }
362 if ( fClusterPointer[i+1]){
363 if (fClusterPointer[i+1]->IsUsed(10)) {
364 shared++;
365 continue;
366 }
367 }
368
369 }
370 //if (shared>found){
371 //Error("AliTPCseed::GetClusterStatistic","problem\n");
372 //}
373}
374
375
376
377
378
379void AliTPCseed::Reset(Bool_t all)
380{
381 //
382 //
383 SetNumberOfClusters(0);
384 fNFoundable = 0;
385 SetChi2(0);
6c94f330 386 ResetCovariance(10.);
81e97e0d 387 /*
388 if (fTrackPoints){
389 for (Int_t i=0;i<8;i++){
390 delete [] fTrackPoints[i];
391 }
392 delete fTrackPoints;
393 fTrackPoints =0;
394 }
395 */
396
397 if (all){
398 for (Int_t i=0;i<200;i++) SetClusterIndex2(i,-3);
399 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
400 }
401
402}
403
404
405void AliTPCseed::Modify(Double_t factor)
406{
407
408 //------------------------------------------------------------------
409 //This function makes a track forget its history :)
410 //------------------------------------------------------------------
411 if (factor<=0) {
6c94f330 412 ResetCovariance(10.);
81e97e0d 413 return;
414 }
6c94f330 415 ResetCovariance(factor);
416
81e97e0d 417 SetNumberOfClusters(0);
418 fNFoundable =0;
419 SetChi2(0);
420 fRemoval = 0;
421 fCurrentSigmaY2 = 0.000005;
422 fCurrentSigmaZ2 = 0.000005;
423 fNoCluster = 0;
424 //fFirstPoint = 160;
425 //fLastPoint = 0;
426}
427
428
429
430
431Int_t AliTPCseed::GetProlongation(Double_t xk, Double_t &y, Double_t & z) const
432{
433 //-----------------------------------------------------------------
434 // This function find proloncation of a track to a reference plane x=xk.
435 // doesn't change internal state of the track
436 //-----------------------------------------------------------------
437
6c94f330 438 Double_t x1=GetX(), x2=x1+(xk-x1), dx=x2-x1;
81e97e0d 439
6c94f330 440 if (TMath::Abs(GetSnp()+GetC()*dx) >= AliTPCReconstructor::GetMaxSnpTrack()) {
81e97e0d 441 return 0;
442 }
443
444 // Double_t y1=fP0, z1=fP1;
60e55aee 445 Double_t c1=GetSnp(), r1=sqrt((1.-c1)*(1.+c1));
446 Double_t c2=c1 + GetC()*dx, r2=sqrt((1.-c2)*(1.+c2));
81e97e0d 447
6c94f330 448 y = GetY();
449 z = GetZ();
81e97e0d 450 //y += dx*(c1+c2)/(r1+r2);
451 //z += dx*(c1+c2)/(c1*r2 + c2*r1)*fP3;
452
453 Double_t dy = dx*(c1+c2)/(r1+r2);
454 Double_t dz = 0;
455 //
6c94f330 456 Double_t delta = GetC()*dx*(c1+c2)/(c1*r2 + c2*r1);
81e97e0d 457 /*
458 if (TMath::Abs(delta)>0.0001){
459 dz = fP3*TMath::ASin(delta)/fP4;
460 }else{
461 dz = dx*fP3*(c1+c2)/(c1*r2 + c2*r1);
462 }
463 */
464 // dz = fP3*AliTPCFastMath::FastAsin(delta)/fP4;
6c94f330 465 dz = GetTgl()*TMath::ASin(delta)/GetC();
81e97e0d 466 //
467 y+=dy;
468 z+=dz;
469
470
471 return 1;
472}
473
474
475//_____________________________________________________________________________
af32720d 476Double_t AliTPCseed::GetPredictedChi2(const AliCluster *c) const
81e97e0d 477{
478 //-----------------------------------------------------------------
479 // This function calculates a predicted chi2 increment.
480 //-----------------------------------------------------------------
6c94f330 481 Double_t p[2]={c->GetY(), c->GetZ()};
482 Double_t cov[3]={fErrorY2, 0., fErrorZ2};
483 return AliExternalTrackParam::GetPredictedChi2(p,cov);
81e97e0d 484}
485
81e97e0d 486//_________________________________________________________________________________________
487
488
489Int_t AliTPCseed::Compare(const TObject *o) const {
490 //-----------------------------------------------------------------
491 // This function compares tracks according to the sector - for given sector according z
492 //-----------------------------------------------------------------
493 AliTPCseed *t=(AliTPCseed*)o;
6c94f330 494
81e97e0d 495 if (fSort == 0){
496 if (t->fRelativeSector>fRelativeSector) return -1;
497 if (t->fRelativeSector<fRelativeSector) return 1;
498 Double_t z2 = t->GetZ();
499 Double_t z1 = GetZ();
500 if (z2>z1) return 1;
501 if (z2<z1) return -1;
502 return 0;
503 }
504 else {
505 Float_t f2 =1;
6c23ffed 506 f2 = 1-20*TMath::Sqrt(t->GetSigma1Pt2())/(t->OneOverPt()+0.0066);
81e97e0d 507 if (t->fBConstrain) f2=1.2;
508
509 Float_t f1 =1;
6c23ffed 510 f1 = 1-20*TMath::Sqrt(GetSigma1Pt2())/(OneOverPt()+0.0066);
81e97e0d 511
512 if (fBConstrain) f1=1.2;
513
514 if (t->GetNumberOfClusters()*f2 <GetNumberOfClusters()*f1) return -1;
515 else return +1;
516 }
517}
518
519
520
521
522//_____________________________________________________________________________
70e20dcf 523Bool_t AliTPCseed::Update(const AliCluster *c, Double_t chisq, Int_t index)
6c94f330 524{
81e97e0d 525 //-----------------------------------------------------------------
526 // This function associates a cluster with this track.
527 //-----------------------------------------------------------------
81e97e0d 528 Int_t n=GetNumberOfClusters();
70e20dcf 529 Int_t idx=GetClusterIndex(n); // save the current cluster index
530
531 AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
ca521f6c 532 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
533 if (TMath::Abs(dx)>0){
534 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
535 Float_t dy = dx*ty;
536 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
537 cl.SetY(c->GetY()-dy);
538 cl.SetZ(c->GetZ()-dz);
539 }
540
70e20dcf 541 if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
e0e13b88 542
543 if (fCMeanSigmaY2p30<0){
544 fCMeanSigmaY2p30= c->GetSigmaY2(); //! current mean sigma Y2 - mean30%
c07cb486 545 fCMeanSigmaZ2p30= c->GetSigmaZ2(); //! current mean sigma Z2 - mean30%
546 fCMeanSigmaY2p30R = 1; //! current mean sigma Y2 - mean5%
547 fCMeanSigmaZ2p30R = 1; //! current mean sigma Z2 - mean5%
e0e13b88 548 }
549 //
550 fCMeanSigmaY2p30= 0.70*fCMeanSigmaY2p30 +0.30*c->GetSigmaY2();
c07cb486 551 fCMeanSigmaZ2p30= 0.70*fCMeanSigmaZ2p30 +0.30*c->GetSigmaZ2();
552 if (fCurrentSigmaY2>0){
553 fCMeanSigmaY2p30R = 0.7*fCMeanSigmaY2p30R +0.3*c->GetSigmaY2()/fCurrentSigmaY2;
554 fCMeanSigmaZ2p30R = 0.7*fCMeanSigmaZ2p30R +0.3*c->GetSigmaZ2()/fCurrentSigmaZ2;
555 }
e0e13b88 556
81e97e0d 557
70e20dcf 558 SetClusterIndex(n,idx); // restore the current cluster index
6c94f330 559 return kTRUE;
81e97e0d 560}
561
562
563
564//_____________________________________________________________________________
105b1b81 565Float_t AliTPCseed::CookdEdx(Double_t low, Double_t up,Int_t i1, Int_t i2, Bool_t onlyused) {
81e97e0d 566 //-----------------------------------------------------------------
567 // This funtion calculates dE/dX within the "low" and "up" cuts.
568 //-----------------------------------------------------------------
569
ba5e52fb 570 Float_t dedx = CookdEdxNorm(low,up,0,i1,i2,1,0,2);
571 SetdEdx(dedx);
572 return dedx;
81e97e0d 573
ba5e52fb 574// return CookdEdxNorm(low,up,0,i1,i2,1,0,2);
4cc7ba77 575
576
ba5e52fb 577// Float_t amp[200];
578// Float_t angular[200];
579// Float_t weight[200];
580// Int_t index[200];
581// //Int_t nc = 0;
582// Float_t meanlog = 100.;
583
584// Float_t mean[4] = {0,0,0,0};
585// Float_t sigma[4] = {1000,1000,1000,1000};
586// Int_t nc[4] = {0,0,0,0};
587// Float_t norm[4] = {1000,1000,1000,1000};
588// //
589// //
590// fNShared =0;
591
592// Float_t gainGG = 1;
593// if (AliTPCcalibDB::Instance()->GetParameters()){
594// gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000.; //relative gas gain
595// }
596
597
598// for (Int_t of =0; of<4; of++){
599// for (Int_t i=of+i1;i<i2;i+=4)
600// {
601// Int_t clindex = fIndex[i];
602// if (clindex<0||clindex&0x8000) continue;
603
604// //AliTPCTrackPoint * point = (AliTPCTrackPoint *) arr.At(i);
605// AliTPCTrackerPoint * point = GetTrackPoint(i);
606// //AliTPCTrackerPoint * pointm = GetTrackPoint(i-1);
607// //AliTPCTrackerPoint * pointp = 0;
608// //if (i<159) pointp = GetTrackPoint(i+1);
609
610// if (point==0) continue;
611// AliTPCclusterMI * cl = fClusterPointer[i];
612// if (cl==0) continue;
613// if (onlyused && (!cl->IsUsed(10))) continue;
614// if (cl->IsUsed(11)) {
615// fNShared++;
616// continue;
617// }
618// Int_t type = cl->GetType();
619// //if (point->fIsShared){
620// // fNShared++;
621// // continue;
622// //}
623// //if (pointm)
624// // if (pointm->fIsShared) continue;
625// //if (pointp)
626// // if (pointp->fIsShared) continue;
627
628// if (type<0) continue;
629// //if (type>10) continue;
630// //if (point->GetErrY()==0) continue;
631// //if (point->GetErrZ()==0) continue;
632
633// //Float_t ddy = (point->GetY()-cl->GetY())/point->GetErrY();
634// //Float_t ddz = (point->GetZ()-cl->GetZ())/point->GetErrZ();
635// //if ((ddy*ddy+ddz*ddz)>10) continue;
636
637
638// // if (point->GetCPoint().GetMax()<5) continue;
639// if (cl->GetMax()<5) continue;
640// Float_t angley = point->GetAngleY();
641// Float_t anglez = point->GetAngleZ();
642
643// Float_t rsigmay2 = point->GetSigmaY();
644// Float_t rsigmaz2 = point->GetSigmaZ();
645// /*
646// Float_t ns = 1.;
647// if (pointm){
648// rsigmay += pointm->GetTPoint().GetSigmaY();
649// rsigmaz += pointm->GetTPoint().GetSigmaZ();
650// ns+=1.;
651// }
652// if (pointp){
653// rsigmay += pointp->GetTPoint().GetSigmaY();
654// rsigmaz += pointp->GetTPoint().GetSigmaZ();
655// ns+=1.;
656// }
657// rsigmay/=ns;
658// rsigmaz/=ns;
659// */
660
661// Float_t rsigma = TMath::Sqrt(rsigmay2*rsigmaz2);
662
663// Float_t ampc = 0; // normalization to the number of electrons
664// if (i>64){
665// // ampc = 1.*point->GetCPoint().GetMax();
666// ampc = 1.*cl->GetMax();
667// //ampc = 1.*point->GetCPoint().GetQ();
668// // AliTPCClusterPoint & p = point->GetCPoint();
669// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.6)) - TMath::Abs(p.GetY()/0.6)+0.5);
670// // Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
671// //Float_t dz =
672// // TMath::Abs( Int_t(iz) - iz + 0.5);
673// //ampc *= 1.15*(1-0.3*dy);
674// //ampc *= 1.15*(1-0.3*dz);
675// // Float_t zfactor = (AliTPCReconstructor::GetCtgRange()-0.0004*TMath::Abs(point->GetCPoint().GetZ()));
676// //ampc *=zfactor;
677// }
678// else{
679// //ampc = 1.0*point->GetCPoint().GetMax();
680// ampc = 1.0*cl->GetMax();
681// //ampc = 1.0*point->GetCPoint().GetQ();
682// //AliTPCClusterPoint & p = point->GetCPoint();
683// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.4)) - TMath::Abs(p.GetY()/0.4)+0.5);
684// //Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
685// //Float_t dz =
686// // TMath::Abs( Int_t(iz) - iz + 0.5);
687
688// //ampc *= 1.15*(1-0.3*dy);
689// //ampc *= 1.15*(1-0.3*dz);
690// // Float_t zfactor = (1.02-0.000*TMath::Abs(point->GetCPoint().GetZ()));
691// //ampc *=zfactor;
692
693// }
694// ampc *= 2.0; // put mean value to channel 50
695// //ampc *= 0.58; // put mean value to channel 50
696// Float_t w = 1.;
697// // if (type>0) w = 1./(type/2.-0.5);
698// // Float_t z = TMath::Abs(cl->GetZ());
699// if (i<64) {
700// ampc /= 0.6;
701// //ampc /= (1+0.0008*z);
702// } else
703// if (i>128){
704// ampc /=1.5;
705// //ampc /= (1+0.0008*z);
706// }else{
707// //ampc /= (1+0.0008*z);
708// }
81e97e0d 709
ba5e52fb 710// if (type<0) { //amp at the border - lower weight
711// // w*= 2.;
81e97e0d 712
ba5e52fb 713// continue;
714// }
715// if (rsigma>1.5) ampc/=1.3; // if big backround
716// amp[nc[of]] = ampc;
717// amp[nc[of]] /=gainGG;
718// angular[nc[of]] = TMath::Sqrt(1.+angley*angley+anglez*anglez);
719// weight[nc[of]] = w;
720// nc[of]++;
721// }
81e97e0d 722
ba5e52fb 723// TMath::Sort(nc[of],amp,index,kFALSE);
724// Float_t sumamp=0;
725// Float_t sumamp2=0;
726// Float_t sumw=0;
727// //meanlog = amp[index[Int_t(nc[of]*0.33)]];
728// meanlog = 50;
729// for (Int_t i=int(nc[of]*low+0.5);i<int(nc[of]*up+0.5);i++){
730// Float_t ampl = amp[index[i]]/angular[index[i]];
731// ampl = meanlog*TMath::Log(1.+ampl/meanlog);
732// //
733// sumw += weight[index[i]];
734// sumamp += weight[index[i]]*ampl;
735// sumamp2 += weight[index[i]]*ampl*ampl;
736// norm[of] += angular[index[i]]*weight[index[i]];
737// }
738// if (sumw<1){
739// SetdEdx(0);
740// }
741// else {
742// norm[of] /= sumw;
743// mean[of] = sumamp/sumw;
744// sigma[of] = sumamp2/sumw-mean[of]*mean[of];
745// if (sigma[of]>0.1)
746// sigma[of] = TMath::Sqrt(sigma[of]);
747// else
748// sigma[of] = 1000;
81e97e0d 749
ba5e52fb 750// mean[of] = (TMath::Exp(mean[of]/meanlog)-1)*meanlog;
751// //mean *=(1-0.02*(sigma/(mean*0.17)-1.));
752// //mean *=(1-0.1*(norm-1.));
753// }
754// }
755
756// Float_t dedx =0;
757// fSdEdx =0;
758// fMAngular =0;
759// // mean[0]*= (1-0.05*(sigma[0]/(0.01+mean[1]*0.18)-1));
760// // mean[1]*= (1-0.05*(sigma[1]/(0.01+mean[0]*0.18)-1));
81e97e0d 761
762
ba5e52fb 763// // dedx = (mean[0]* TMath::Sqrt((1.+nc[0]))+ mean[1]* TMath::Sqrt((1.+nc[1])) )/
764// // ( TMath::Sqrt((1.+nc[0]))+TMath::Sqrt((1.+nc[1])));
765
766// Int_t norm2 = 0;
767// Int_t norm3 = 0;
768// for (Int_t i =0;i<4;i++){
769// if (nc[i]>2&&nc[i]<1000){
770// dedx += mean[i] *nc[i];
771// fSdEdx += sigma[i]*(nc[i]-2);
772// fMAngular += norm[i] *nc[i];
773// norm2 += nc[i];
774// norm3 += nc[i]-2;
775// }
776// fDEDX[i] = mean[i];
777// fSDEDX[i] = sigma[i];
778// fNCDEDX[i]= nc[i];
779// }
780
781// if (norm3>0){
782// dedx /=norm2;
783// fSdEdx /=norm3;
784// fMAngular/=norm2;
785// }
786// else{
787// SetdEdx(0);
788// return 0;
789// }
790// // Float_t dedx1 =dedx;
791// /*
792// dedx =0;
793// for (Int_t i =0;i<4;i++){
794// if (nc[i]>2&&nc[i]<1000){
795// mean[i] = mean[i]*(1-0.12*(sigma[i]/(fSdEdx)-1.));
796// dedx += mean[i] *nc[i];
797// }
798// fDEDX[i] = mean[i];
799// }
800// dedx /= norm2;
801// */
81e97e0d 802
803
ba5e52fb 804// SetdEdx(dedx);
805// return dedx;
81e97e0d 806}
807Double_t AliTPCseed::Bethe(Double_t bg){
808 //
809 // This is the Bethe-Bloch function normalised to 1 at the minimum
810 //
811 Double_t bg2=bg*bg;
812 Double_t bethe;
813 if (bg<3.5e1)
814 bethe=(1.+ bg2)/bg2*(log(5940*bg2) - bg2/(1.+ bg2));
815 else // Density effect ( approximately :)
816 bethe=1.15*(1.+ bg2)/bg2*(log(3.5*5940*bg) - bg2/(1.+ bg2));
817 return bethe/11.091;
818}
819
820void AliTPCseed::CookPID()
821{
822 //
823 // cook PID information according dEdx
824 //
825 Double_t fRange = 10.;
826 Double_t fRes = 0.1;
827 Double_t fMIP = 47.;
828 //
829 Int_t ns=AliPID::kSPECIES;
830 Double_t sumr =0;
831 for (Int_t j=0; j<ns; j++) {
832 Double_t mass=AliPID::ParticleMass(j);
6c94f330 833 Double_t mom=GetP();
81e97e0d 834 Double_t dedx=fdEdx/fMIP;
835 Double_t bethe=Bethe(mom/mass);
836 Double_t sigma=fRes*bethe;
837 if (sigma>0.001){
838 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
839 fTPCr[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
840 sumr+=fTPCr[j];
841 continue;
842 }
843 fTPCr[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
844 sumr+=fTPCr[j];
845 }
846 else{
847 fTPCr[j]=1.;
848 sumr+=fTPCr[j];
849 }
850 }
851 for (Int_t j=0; j<ns; j++) {
852 fTPCr[j]/=sumr; //normalize
853 }
854}
855
6c94f330 856Double_t AliTPCseed::GetYat(Double_t xk) const {
857//-----------------------------------------------------------------
858// This function calculates the Y-coordinate of a track at the plane x=xk.
859//-----------------------------------------------------------------
860 if (TMath::Abs(GetSnp())>AliTPCReconstructor::GetMaxSnpTrack()) return 0.; //patch 01 jan 06
60e55aee 861 Double_t c1=GetSnp(), r1=TMath::Sqrt((1.-c1)*(1.+c1));
6c94f330 862 Double_t c2=c1+GetC()*(xk-GetX());
863 if (TMath::Abs(c2)>AliTPCReconstructor::GetMaxSnpTrack()) return 0;
60e55aee 864 Double_t r2=TMath::Sqrt((1.-c2)*(1.+c2));
6c94f330 865 return GetY() + (xk-GetX())*(c1+c2)/(r1+r2);
866}
867
19b00333 868void AliTPCseed::SetClusterMapBit(int ibit, Bool_t state)
869{
870 fClusterMap[ibit] = state;
871}
872Bool_t AliTPCseed::GetClusterMapBit(int ibit)
873{
874 return fClusterMap[ibit];
875}
876void AliTPCseed::SetSharedMapBit(int ibit, Bool_t state)
877{
878 fSharedMap[ibit] = state;
879}
880Bool_t AliTPCseed::GetSharedMapBit(int ibit)
881{
882 return fSharedMap[ibit];
883}
eb02f63a 884
885
0a65832b 886
887
888
ba5e52fb 889Float_t AliTPCseed::CookdEdxNorm(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Bool_t shapeNorm,Bool_t posNorm, Int_t padNorm){
0a65832b 890
891 //
892 // calculates dedx using the cluster
893 // low - up specify trunc mean range - default form 0-0.7
8076baa0 894 // type - 1 - max charge or 0- total charge in cluster
895 // //2- max no corr 3- total+ correction
0a65832b 896 // i1-i2 - the pad-row range used for calculation
ba5e52fb 897 // shapeNorm - kTRUE -taken from OCDB
898 //
899 // posNorm - usage of pos normalization
0a65832b 900 //
ba5e52fb 901 //
0a65832b 902 // normalization parametrization taken from AliTPCClusterParam
903 //
ba5e52fb 904 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
905 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
906 if (!parcl) return 0;
907 if (!param) return 0;
0a65832b 908 Float_t amp[160];
909 Int_t indexes[160];
910 Int_t ncl=0;
911 //
912 //
ba5e52fb 913 Float_t gainGG = 1; // gas gain factor -always enabled
914 Float_t gainPad = 1; // gain map - used always
915 Float_t corrShape = 1; //
916 Float_t corrPos = 1; // local position correction - if posNorm enabled
917 Float_t corrPadType = 1; // pad type correction - if padNorm enabled
918 Float_t corrNorm = 1; // normalization factor - set Q to channel 50
919 //
920 //
921 //
4cc7ba77 922 if (AliTPCcalibDB::Instance()->GetParameters()){
ba5e52fb 923 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
4cc7ba77 924 }
925
0a65832b 926 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
4cc7ba77 927 const Float_t kedgey =3.;
0a65832b 928 //
7cd8ac3f 929 //
0a65832b 930 for (Int_t irow=i1; irow<i2; irow++){
931 AliTPCclusterMI* cluster = GetClusterPointer(irow);
932 if (!cluster) continue;
933 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
8076baa0 934 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
ba5e52fb 935 Int_t ipad= 0;
936 if (irow>62) ipad=1;
937 if (irow>127) ipad=2;
938 //
939 //
940 //
941 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
942 if (gainMap) {
943 //
944 // Get gainPad - pad by pad calibration
945 //
d6920632 946 Float_t factor = 1;
947 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
948 if (irow < 63) { // IROC
ba5e52fb 949 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
d6920632 950 } else { // OROC
951 factor = roc->GetValue(irow - 63, TMath::Nint(cluster->GetPad()));
952 }
ba5e52fb 953 if (factor>0.5) gainPad=factor;
7cd8ac3f 954 }
ba5e52fb 955 //
956 //do position and angular normalization
957 //
958 if (shapeNorm){
959 if (type<=1){
960 //
961 AliTPCTrackerPoint * point = GetTrackPoint(irow);
962 Float_t ty = TMath::Abs(point->GetAngleY());
963 Float_t tz = TMath::Abs(point->GetAngleZ());
964
965 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
966 corrShape = parcl->Qnorm(ipad,type,dr,ty,tz);
967 }
0a65832b 968 }
ba5e52fb 969
8e1dcdda 970 if (posNorm){
971 //
ba5e52fb 972 // Do position normalization - relative distance to
973 // center of pad- time bin
974 // Work in progress
975 corrPos = parcl->QnormPos(ipad,type, cluster->GetPad(),
976 cluster->GetTimeBin(), cluster->GetZ(),
977 cluster->GetSigmaY2(),cluster->GetSigmaZ2(),
978 cluster->GetMax(),cluster->GetQ());
8e1dcdda 979 }
980
ba5e52fb 981 if (padNorm==1){
982 //taken from OCDB
983 if (type==0 && parcl->fQpadTnorm) corrPadType = (*parcl->fQpadTnorm)[ipad];
984 if (type==1 && parcl->fQpadTnorm) corrPadType = (*parcl->fQpadMnorm)[ipad];
2fc9608f 985 }
ba5e52fb 986 if (padNorm==2){
987 corrPadType =param->GetPadPitchLength(cluster->GetDetector(),cluster->GetRow());
988 //use hardwired - temp fix
989 if (type==0) corrNorm=3.;
990 if (type==1) corrNorm=1.;
991 }
992 //
993 amp[ncl]=charge;
994 amp[ncl]/=gainGG;
995 amp[ncl]/=gainPad;
996 amp[ncl]/=corrShape;
997 amp[ncl]/=corrPadType;
998 amp[ncl]/=corrPos;
999 amp[ncl]/=corrNorm;
1000 //
0a65832b 1001 ncl++;
1002 }
8076baa0 1003
0a65832b 1004 if (type>3) return ncl;
1005 TMath::Sort(ncl,amp, indexes, kFALSE);
1006
8076baa0 1007 if (ncl<10) return 0;
0a65832b 1008
1009 Float_t suma=0;
1010 Float_t sumn=0;
1011 Int_t icl0=TMath::Nint(ncl*low);
1012 Int_t icl1=TMath::Nint(ncl*up);
1013 for (Int_t icl=icl0; icl<icl1;icl++){
1014 suma+=amp[indexes[icl]];
1015 sumn++;
1016 }
1017 return suma/sumn;
1018
1019}
1020
1021Double_t AliTPCseed::BetheMass(Double_t mass){
1022 //
1023 // return bethe-bloch
1024 //
1025 Float_t bg= P()/mass;
1026 const Double_t kp1=0.76176e-1;
1027 const Double_t kp2=10.632;
1028 const Double_t kp3=0.13279e-4;
1029 const Double_t kp4=1.8631;
1030 const Double_t kp5=1.9479;
1031
1032 Double_t dbg = (Double_t) bg;
1033
1034 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1035
1036 Double_t aa = TMath::Power(beta,kp4);
1037 Double_t bb = TMath::Power(1./dbg,kp5);
1038
1039 bb=TMath::Log(kp3+bb);
1040
1041 return ((Float_t)((kp2-aa-bb)*kp1/aa));
1042}
1043
1044
eb02f63a 1045Float_t AliTPCseed::CookShape(Int_t type){
1046 //
1047 //
1048 //
1049 //-----------------------------------------------------------------
1050 // This funtion calculates dE/dX within the "low" and "up" cuts.
1051 //-----------------------------------------------------------------
1052 Float_t means=0;
1053 Float_t meanc=0;
1054 for (Int_t i =0; i<160;i++) {
1055 AliTPCTrackerPoint * point = GetTrackPoint(i);
1056 if (point==0) continue;
1057
1058 AliTPCclusterMI * cl = fClusterPointer[i];
1059 if (cl==0) continue;
1060
1061 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1062 Float_t rsigmaz = TMath::Sqrt(point->GetSigmaZ());
1063 Float_t rsigma = (rsigmay+rsigmaz)*0.5;
1064 if (type==0) means+=rsigma;
1065 if (type==1) means+=rsigmay;
1066 if (type==2) means+=rsigmaz;
1067 meanc++;
1068 }
1069 Float_t mean = (meanc>0)? means/meanc:0;
1070 return mean;
1071}
87e92a27 1072
1073
1074
1075Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
1076 //
1077 // Refit the track
1078 // return value - number of used clusters
1079 //
1080 //
1081 const Int_t kMinNcl =10;
1082 AliTPCseed *track=new AliTPCseed(*seed);
1083 Int_t sector=-1;
1084 // reset covariance
1085 //
1086 Double_t covar[15];
1087 for (Int_t i=0;i<15;i++) covar[i]=0;
1088 covar[0]=10.*10.;
1089 covar[2]=10.*10.;
1090 covar[5]=10.*10./(64.*64.);
1091 covar[9]=10.*10./(64.*64.);
1092 covar[14]=1*1;
1093 //
1094
1095 Float_t xmin=1000, xmax=-10000;
1096 Int_t imin=158, imax=0;
1097 for (Int_t i=0;i<160;i++) {
1098 AliTPCclusterMI *c=track->GetClusterPointer(i);
1099 if (!c) continue;
1100 if (sector<0) sector = c->GetDetector();
1101 if (c->GetX()<xmin) xmin=c->GetX();
1102 if (c->GetX()>xmax) xmax=c->GetX();
1103 if (i<imin) imin=i;
1104 if (i>imax) imax=i;
1105 }
1106 if(imax-imin<kMinNcl) {
1107 delete track;
1108 return 0 ;
1109 }
1110 // Not succes to rotate
1111 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1112 delete track;
1113 return 0;
1114 }
1115 //
1116 //
1117 // fit from inner to outer row
1118 //
1119 AliExternalTrackParam paramIn;
1120 AliExternalTrackParam paramOut;
1121 Bool_t isOK=kTRUE;
be34cb88 1122 Int_t ncl=0;
87e92a27 1123 //
1124 //
1125 //
1126 for (Int_t i=imin; i<=imax; i++){
1127 AliTPCclusterMI *c=track->GetClusterPointer(i);
1128 if (!c) continue;
1129 // if (RejectCluster(c,track)) continue;
be34cb88 1130 sector = (c->GetDetector()%18);
1131 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1132 //continue;
1133 }
87e92a27 1134 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1135 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1136 if (!track->PropagateTo(r[0])) {
1137 isOK=kFALSE;
87e92a27 1138 }
1139 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1140 }
1141 if (!isOK) { delete track; return 0;}
1142 track->AddCovariance(covar);
1143 //
1144 //
1145 //
1146 for (Int_t i=imax; i>=imin; i--){
1147 AliTPCclusterMI *c=track->GetClusterPointer(i);
1148 if (!c) continue;
1149 //if (RejectCluster(c,track)) continue;
be34cb88 1150 sector = (c->GetDetector()%18);
1151 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1152 //continue;
1153 }
87e92a27 1154 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1155 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1156 if (!track->PropagateTo(r[0])) {
1157 isOK=kFALSE;
87e92a27 1158 }
1159 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1160 }
be34cb88 1161 //if (!isOK) { delete track; return 0;}
87e92a27 1162 paramIn = *track;
1163 track->AddCovariance(covar);
1164 //
1165 //
1166 for (Int_t i=imin; i<=imax; i++){
1167 AliTPCclusterMI *c=track->GetClusterPointer(i);
1168 if (!c) continue;
be34cb88 1169 sector = (c->GetDetector()%18);
1170 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1171 //continue;
1172 }
1173 ncl++;
87e92a27 1174 //if (RejectCluster(c,track)) continue;
1175 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1176 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1177 if (!track->PropagateTo(r[0])) {
1178 isOK=kFALSE;
87e92a27 1179 }
1180 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1181 }
be34cb88 1182 //if (!isOK) { delete track; return 0;}
87e92a27 1183 paramOut=*track;
87e92a27 1184 //
1185 //
1186 //
1187 if (parin) (*parin)=paramIn;
1188 if (parout) (*parout)=paramOut;
be34cb88 1189 return ncl;
87e92a27 1190}
1191
1192
1193
1194Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
1195 //
1196 //
1197 //
1198 return kFALSE;
1199}
3247d397 1200
1201
1202
1203
1204
1205
1206void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1207 Double_t& erry, Double_t &errz)
1208{
1209 //
1210 // Get cluster error at given position
1211 //
1212 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1213 Double_t tany,tanz;
1214 Double_t snp1=param->GetSnp();
60e55aee 1215 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1216 //
1217 Double_t tgl1=param->GetTgl();
60e55aee 1218 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1219 //
1220 Int_t padSize = 0; // short pads
1221 if (cluster->GetDetector() >= 36) {
1222 padSize = 1; // medium pads
1223 if (cluster->GetRow() > 63) padSize = 2; // long pads
1224 }
1225
1226 erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
1227 errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
1228}
1229
1230
1231void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1232 Double_t& rmsy, Double_t &rmsz)
1233{
1234 //
1235 // Get cluster error at given position
1236 //
1237 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1238 Double_t tany,tanz;
1239 Double_t snp1=param->GetSnp();
60e55aee 1240 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1241 //
1242 Double_t tgl1=param->GetTgl();
60e55aee 1243 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1244 //
1245 Int_t padSize = 0; // short pads
1246 if (cluster->GetDetector() >= 36) {
1247 padSize = 1; // medium pads
1248 if (cluster->GetRow() > 63) padSize = 2; // long pads
1249 }
1250
1251 rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
1252 rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
1253}
ba5e52fb 1254
1255
1256
1257Double_t AliTPCseed::GetQCorrGeom(Float_t ty, Float_t tz){
1258 //Geoetrical
1259 //ty - tangent in local y direction
1260 //tz - tangent
1261 //
1262 Float_t norm=TMath::Sqrt(1+ty*ty+tz*tz);
1263 return norm;
1264}
1265
1266Double_t AliTPCseed::GetQCorrShape(Int_t ipad, Int_t type,Float_t z, Float_t ty, Float_t tz, Float_t q, Float_t thr){
1267 //
1268 // Q normalization
1269 //
1270 // return value = Q Normalization factor
1271 // Normalization - 1 - shape factor part for full drift
1272 // 1 - electron attachment for 0 drift
1273
1274 // Input parameters:
1275 //
1276 // ipad - 0 short pad
1277 // 1 medium pad
1278 // 2 long pad
1279 //
1280 // type - 0 qmax
1281 // - 1 qtot
1282 //
1283 //z - z position (-250,250 cm)
1284 //ty - tangent in local y direction
1285 //tz - tangent
1286 //
1287
1288 AliTPCClusterParam * paramCl = AliTPCcalibDB::Instance()->GetClusterParam();
1289 AliTPCParam * paramTPC = AliTPCcalibDB::Instance()->GetParameters();
1290
1291 if (!paramCl) return 1;
1292 //
1293 Double_t dr = 250.-TMath::Abs(z);
1294 Double_t sy = paramCl->GetRMS0( 0,ipad, dr, TMath::Abs(ty));
1295 Double_t sy0= paramCl->GetRMS0(0,ipad, 250, 0);
1296 Double_t sz = paramCl->GetRMS0( 1,ipad, dr, TMath::Abs(tz));
1297 Double_t sz0= paramCl->GetRMS0(1,ipad, 250, 0);
1298
1299 Double_t sfactorMax = TMath::Sqrt(sy0*sz0/(sy*sz));
1300
1301
1302 Double_t dt = 1000000*(dr/paramTPC->GetDriftV()); //time in microsecond
1303 Double_t attProb = TMath::Exp(-paramTPC->GetAttCoef()*paramTPC->GetOxyCont()*dt);
1304 //
1305 //
1306 if (type==0) return sfactorMax*attProb;
1307
1308 return attProb;
1309
1310
1311}
1312