- add v2 task for julian
[u/mrichter/AliRoot.git] / TPC / AliTPCseed.cxx
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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//-----------------------------------------------------------------
28273e26 20//
81e97e0d 21// Implementation of the TPC seed class
22// This class is used by the AliTPCtrackerMI class
23// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
24//-----------------------------------------------------------------
25#include "TClonesArray.h"
2efc897f 26#include "TGraphErrors.h"
81e97e0d 27#include "AliTPCseed.h"
3f82c4f2 28#include "AliTPCReconstructor.h"
0a65832b 29#include "AliTPCClusterParam.h"
7cd8ac3f 30#include "AliTPCCalPad.h"
31#include "AliTPCCalROC.h"
37540068 32#include "AliTPCcalibDB.h"
d080e4a4 33#include "AliTPCParam.h"
5731b051 34#include "AliMathBase.h"
3af3fbc4 35#include "AliTPCTransform.h"
36#include "AliSplineFit.h"
37#include "AliCDBManager.h"
108a67db 38#include "AliTPCcalibDButil.h"
7cd8ac3f 39
81e97e0d 40
41ClassImp(AliTPCseed)
42
43
44
32fab534 45AliTPCseed::AliTPCseed():
46 AliTPCtrack(),
47 fEsd(0x0),
2928bdf0 48 fClusterOwner(kFALSE),
32fab534 49 fRow(0),
50 fSector(-1),
51 fRelativeSector(-1),
52 fCurrentSigmaY2(1e10),
53 fCurrentSigmaZ2(1e10),
e0e13b88 54 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
55 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 56 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
57 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
e0e13b88 58 //
32fab534 59 fErrorY2(1e10),
60 fErrorZ2(1e10),
61 fCurrentCluster(0x0),
62 fCurrentClusterIndex1(-1),
63 fInDead(kFALSE),
64 fIsSeeding(kFALSE),
65 fNoCluster(0),
66 fSort(0),
67 fBSigned(kFALSE),
68 fSeedType(0),
69 fSeed1(-1),
70 fSeed2(-1),
71 fMAngular(0),
ddfbc51a 72 fCircular(0),
73 fPoolID(-1)
32fab534 74{
81e97e0d 75 //
5c09947e 76 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 77 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
78 for (Int_t i=0;i<3;i++) fKinkIndexes[i]=0;
32fab534 79 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0.2;
80 for (Int_t i=0;i<4;i++) {
81 fDEDX[i] = 0.;
82 fSDEDX[i] = 1e10;
83 fNCDEDX[i] = 0;
9c0db267 84 fNCDEDXInclThres[i] = 0;
32fab534 85 }
9c0db267 86 fDEDX[4] = 0;
32fab534 87 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 88}
32fab534 89
2928bdf0 90AliTPCseed::AliTPCseed(const AliTPCseed &s, Bool_t clusterOwner):
32fab534 91 AliTPCtrack(s),
92 fEsd(0x0),
2928bdf0 93 fClusterOwner(clusterOwner),
32fab534 94 fRow(0),
95 fSector(-1),
96 fRelativeSector(-1),
c07cb486 97 fCurrentSigmaY2(-1),
98 fCurrentSigmaZ2(-1),
e0e13b88 99 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
100 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 101 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
102 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 103 fErrorY2(1e10),
104 fErrorZ2(1e10),
105 fCurrentCluster(0x0),
106 fCurrentClusterIndex1(-1),
107 fInDead(kFALSE),
108 fIsSeeding(kFALSE),
109 fNoCluster(0),
110 fSort(0),
111 fBSigned(kFALSE),
112 fSeedType(0),
113 fSeed1(-1),
114 fSeed2(-1),
115 fMAngular(0),
ddfbc51a 116 fCircular(0),
117 fPoolID(-1)
32fab534 118{
81e97e0d 119 //---------------------
120 // dummy copy constructor
121 //-------------------------
2928bdf0 122 for (Int_t i=0;i<160;i++) {
123 fClusterPointer[i]=0;
124 if (fClusterOwner){
125 if (s.fClusterPointer[i])
126 fClusterPointer[i] = new AliTPCclusterMI(*(s.fClusterPointer[i]));
127 }else{
128 fClusterPointer[i] = s.fClusterPointer[i];
129 }
130 fTrackPoints[i] = s.fTrackPoints[i];
131 }
81e97e0d 132 for (Int_t i=0;i<160;i++) fIndex[i] = s.fIndex[i];
5c09947e 133 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=s.fTPCr[i];
134 for (Int_t i=0;i<4;i++) {
135 fDEDX[i] = s.fDEDX[i];
136 fSDEDX[i] = s.fSDEDX[i];
137 fNCDEDX[i] = s.fNCDEDX[i];
9c0db267 138 fNCDEDXInclThres[i] = s.fNCDEDXInclThres[i];
5c09947e 139 }
9c0db267 140 fDEDX[4] = s.fDEDX[4];
5c09947e 141 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = s.fOverlapLabels[i];
19b00333 142
81e97e0d 143}
5c09947e 144
145
32fab534 146AliTPCseed::AliTPCseed(const AliTPCtrack &t):
147 AliTPCtrack(t),
148 fEsd(0x0),
2928bdf0 149 fClusterOwner(kFALSE),
32fab534 150 fRow(0),
151 fSector(-1),
152 fRelativeSector(-1),
c07cb486 153 fCurrentSigmaY2(-1),
154 fCurrentSigmaZ2(-1),
e0e13b88 155 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
156 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 157 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
158 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 159 fErrorY2(1e10),
160 fErrorZ2(1e10),
161 fCurrentCluster(0x0),
162 fCurrentClusterIndex1(-1),
163 fInDead(kFALSE),
164 fIsSeeding(kFALSE),
165 fNoCluster(0),
166 fSort(0),
167 fBSigned(kFALSE),
168 fSeedType(0),
169 fSeed1(-1),
170 fSeed2(-1),
171 fMAngular(0),
ddfbc51a 172 fCircular(0),
173 fPoolID(-1)
32fab534 174{
81e97e0d 175 //
32fab534 176 // Constructor from AliTPCtrack
177 //
178 fFirstPoint =0;
105b1b81 179 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
81e97e0d 180 for (Int_t i=0;i<160;i++) {
181 fClusterPointer[i] = 0;
182 Int_t index = t.GetClusterIndex(i);
183 if (index>=-1){
184 SetClusterIndex2(i,index);
185 }
186 else{
187 SetClusterIndex2(i,-3);
188 }
189 }
32fab534 190 for (Int_t i=0;i<4;i++) {
191 fDEDX[i] = 0.;
192 fSDEDX[i] = 1e10;
193 fNCDEDX[i] = 0;
9c0db267 194 fNCDEDXInclThres[i] = 0;
32fab534 195 }
9c0db267 196 fDEDX[4] = 0;
32fab534 197 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 198}
199
6c94f330 200AliTPCseed::AliTPCseed(Double_t xr, Double_t alpha, const Double_t xx[5],
201 const Double_t cc[15], Int_t index):
202 AliTPCtrack(xr, alpha, xx, cc, index),
32fab534 203 fEsd(0x0),
2928bdf0 204 fClusterOwner(kFALSE),
32fab534 205 fRow(0),
206 fSector(-1),
207 fRelativeSector(-1),
c07cb486 208 fCurrentSigmaY2(-1),
209 fCurrentSigmaZ2(-1),
e0e13b88 210 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
211 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 212 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
213 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 214 fErrorY2(1e10),
215 fErrorZ2(1e10),
216 fCurrentCluster(0x0),
217 fCurrentClusterIndex1(-1),
218 fInDead(kFALSE),
219 fIsSeeding(kFALSE),
220 fNoCluster(0),
221 fSort(0),
222 fBSigned(kFALSE),
223 fSeedType(0),
224 fSeed1(-1),
225 fSeed2(-1),
226 fMAngular(0),
ddfbc51a 227 fCircular(0),
228 fPoolID(-1)
32fab534 229{
230 //
231 // Constructor
81e97e0d 232 //
32fab534 233 fFirstPoint =0;
5c09947e 234 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 235 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
81e97e0d 236 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
32fab534 237 for (Int_t i=0;i<4;i++) {
238 fDEDX[i] = 0.;
239 fSDEDX[i] = 1e10;
240 fNCDEDX[i] = 0;
9c0db267 241 fNCDEDXInclThres[i] = 0;
32fab534 242 }
9c0db267 243 fDEDX[4] = 0;
32fab534 244 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 245}
246
247AliTPCseed::~AliTPCseed(){
248 //
249 // destructor
81e97e0d 250 fNoCluster =0;
2928bdf0 251 if (fClusterOwner){
252 for (Int_t icluster=0; icluster<160; icluster++){
253 delete fClusterPointer[icluster];
254 }
255 }
bfb57b6c 256
81e97e0d 257}
179c6296 258//_________________________________________________
316c6cd9 259AliTPCseed & AliTPCseed::operator=(const AliTPCseed &param)
179c6296 260{
261 //
316c6cd9 262 // assignment operator
ddfbc51a 263 // don't touch pool ID
179c6296 264 //
316c6cd9 265 if(this!=&param){
266 AliTPCtrack::operator=(param);
267 fEsd =param.fEsd;
316c6cd9 268 fClusterOwner = param.fClusterOwner;
f06a1ff6 269 if (!fClusterOwner) for(Int_t i = 0;i<160;++i)fClusterPointer[i] = param.fClusterPointer[i];
396e55e3 270 else for(Int_t i = 0;i<160;++i) {
271 delete fClusterPointer[i];
272 fClusterPointer[i] = new AliTPCclusterMI(*(param.fClusterPointer[i]));
273 }
316c6cd9 274 // leave out fPoint, they are also not copied in the copy ctor...
275 // but deleted in the dtor... strange...
316c6cd9 276 fRow = param.fRow;
277 fSector = param.fSector;
278 fRelativeSector = param.fRelativeSector;
279 fCurrentSigmaY2 = param.fCurrentSigmaY2;
280 fCurrentSigmaZ2 = param.fCurrentSigmaZ2;
281 fErrorY2 = param.fErrorY2;
282 fErrorZ2 = param.fErrorZ2;
283 fCurrentCluster = param.fCurrentCluster; // this is not allocated by AliTPCSeed
284 fCurrentClusterIndex1 = param.fCurrentClusterIndex1;
285 fInDead = param.fInDead;
286 fIsSeeding = param.fIsSeeding;
287 fNoCluster = param.fNoCluster;
288 fSort = param.fSort;
289 fBSigned = param.fBSigned;
290 for(Int_t i = 0;i<4;++i){
291 fDEDX[i] = param.fDEDX[i];
292 fSDEDX[i] = param.fSDEDX[i];
293 fNCDEDX[i] = param.fNCDEDX[i];
9c0db267 294 fNCDEDXInclThres[i] = param.fNCDEDXInclThres[i];
316c6cd9 295 }
9c0db267 296 fDEDX[4] = param.fDEDX[4];
316c6cd9 297 for(Int_t i = 0;i<AliPID::kSPECIES;++i)fTPCr[i] = param.fTPCr[i];
298
299 fSeedType = param.fSeedType;
300 fSeed1 = param.fSeed1;
301 fSeed2 = param.fSeed2;
302 for(Int_t i = 0;i<12;++i)fOverlapLabels[i] = param.fOverlapLabels[i];
303 fMAngular = param.fMAngular;
304 fCircular = param.fCircular;
305 for(int i = 0;i<160;++i)fTrackPoints[i] = param.fTrackPoints[i];
316c6cd9 306 }
179c6296 307 return (*this);
308}
309//____________________________________________________
81e97e0d 310AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
311{
312 //
313 //
314 return &fTrackPoints[i];
315}
316
81e97e0d 317
318
319Double_t AliTPCseed::GetDensityFirst(Int_t n)
320{
321 //
322 //
323 // return cluster for n rows bellow first point
324 Int_t nfoundable = 1;
325 Int_t nfound = 1;
326 for (Int_t i=fLastPoint-1;i>0&&nfoundable<n; i--){
327 Int_t index = GetClusterIndex2(i);
328 if (index!=-1) nfoundable++;
329 if (index>0) nfound++;
330 }
331 if (nfoundable<n) return 0;
332 return Double_t(nfound)/Double_t(nfoundable);
333
334}
335
336
337void AliTPCseed::GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2)
338{
339 // get cluster stat. on given region
340 //
341 found = 0;
342 foundable = 0;
343 shared =0;
344 for (Int_t i=first;i<last; i++){
345 Int_t index = GetClusterIndex2(i);
346 if (index!=-1) foundable++;
6d493ea0 347 if (index&0x8000) continue;
81e97e0d 348 if (fClusterPointer[i]) {
349 found++;
350 }
351 else
352 continue;
353
354 if (fClusterPointer[i]->IsUsed(10)) {
355 shared++;
356 continue;
357 }
358 if (!plus2) continue; //take also neighborhoud
359 //
360 if ( (i>0) && fClusterPointer[i-1]){
361 if (fClusterPointer[i-1]->IsUsed(10)) {
362 shared++;
363 continue;
364 }
365 }
366 if ( fClusterPointer[i+1]){
367 if (fClusterPointer[i+1]->IsUsed(10)) {
368 shared++;
369 continue;
370 }
371 }
372
373 }
374 //if (shared>found){
375 //Error("AliTPCseed::GetClusterStatistic","problem\n");
376 //}
377}
378
379
380
381
382
383void AliTPCseed::Reset(Bool_t all)
384{
385 //
386 //
387 SetNumberOfClusters(0);
388 fNFoundable = 0;
389 SetChi2(0);
6c94f330 390 ResetCovariance(10.);
81e97e0d 391 /*
392 if (fTrackPoints){
393 for (Int_t i=0;i<8;i++){
394 delete [] fTrackPoints[i];
395 }
396 delete fTrackPoints;
397 fTrackPoints =0;
398 }
399 */
400
401 if (all){
f06a1ff6 402 for (Int_t i=200;i--;) SetClusterIndex2(i,-3);
403 if (!fClusterOwner) for (Int_t i=160;i--;) fClusterPointer[i]=0;
404 else for (Int_t i=160;i--;) {delete fClusterPointer[i]; fClusterPointer[i]=0;}
81e97e0d 405 }
406
407}
408
409
410void AliTPCseed::Modify(Double_t factor)
411{
412
413 //------------------------------------------------------------------
414 //This function makes a track forget its history :)
415 //------------------------------------------------------------------
416 if (factor<=0) {
6c94f330 417 ResetCovariance(10.);
81e97e0d 418 return;
419 }
6c94f330 420 ResetCovariance(factor);
421
81e97e0d 422 SetNumberOfClusters(0);
423 fNFoundable =0;
424 SetChi2(0);
425 fRemoval = 0;
426 fCurrentSigmaY2 = 0.000005;
427 fCurrentSigmaZ2 = 0.000005;
428 fNoCluster = 0;
429 //fFirstPoint = 160;
430 //fLastPoint = 0;
431}
432
433
434
435
436Int_t AliTPCseed::GetProlongation(Double_t xk, Double_t &y, Double_t & z) const
437{
438 //-----------------------------------------------------------------
439 // This function find proloncation of a track to a reference plane x=xk.
440 // doesn't change internal state of the track
441 //-----------------------------------------------------------------
442
6c94f330 443 Double_t x1=GetX(), x2=x1+(xk-x1), dx=x2-x1;
81e97e0d 444
6c94f330 445 if (TMath::Abs(GetSnp()+GetC()*dx) >= AliTPCReconstructor::GetMaxSnpTrack()) {
81e97e0d 446 return 0;
447 }
448
449 // Double_t y1=fP0, z1=fP1;
60e55aee 450 Double_t c1=GetSnp(), r1=sqrt((1.-c1)*(1.+c1));
451 Double_t c2=c1 + GetC()*dx, r2=sqrt((1.-c2)*(1.+c2));
81e97e0d 452
6c94f330 453 y = GetY();
454 z = GetZ();
81e97e0d 455 //y += dx*(c1+c2)/(r1+r2);
456 //z += dx*(c1+c2)/(c1*r2 + c2*r1)*fP3;
457
458 Double_t dy = dx*(c1+c2)/(r1+r2);
459 Double_t dz = 0;
460 //
6c94f330 461 Double_t delta = GetC()*dx*(c1+c2)/(c1*r2 + c2*r1);
81e97e0d 462 /*
463 if (TMath::Abs(delta)>0.0001){
464 dz = fP3*TMath::ASin(delta)/fP4;
465 }else{
466 dz = dx*fP3*(c1+c2)/(c1*r2 + c2*r1);
467 }
468 */
469 // dz = fP3*AliTPCFastMath::FastAsin(delta)/fP4;
6c94f330 470 dz = GetTgl()*TMath::ASin(delta)/GetC();
81e97e0d 471 //
472 y+=dy;
473 z+=dz;
474
475
476 return 1;
477}
478
479
480//_____________________________________________________________________________
af32720d 481Double_t AliTPCseed::GetPredictedChi2(const AliCluster *c) const
81e97e0d 482{
483 //-----------------------------------------------------------------
484 // This function calculates a predicted chi2 increment.
485 //-----------------------------------------------------------------
6c94f330 486 Double_t p[2]={c->GetY(), c->GetZ()};
487 Double_t cov[3]={fErrorY2, 0., fErrorZ2};
9c7b8249 488
489 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
490 if (TMath::Abs(dx)>0){
491 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
492 Float_t dy = dx*ty;
493 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
494 p[0] = c->GetY()-dy;
495 p[1] = c->GetZ()-dz;
496 }
6c94f330 497 return AliExternalTrackParam::GetPredictedChi2(p,cov);
81e97e0d 498}
499
81e97e0d 500//_________________________________________________________________________________________
501
502
503Int_t AliTPCseed::Compare(const TObject *o) const {
504 //-----------------------------------------------------------------
505 // This function compares tracks according to the sector - for given sector according z
506 //-----------------------------------------------------------------
507 AliTPCseed *t=(AliTPCseed*)o;
6c94f330 508
81e97e0d 509 if (fSort == 0){
510 if (t->fRelativeSector>fRelativeSector) return -1;
511 if (t->fRelativeSector<fRelativeSector) return 1;
512 Double_t z2 = t->GetZ();
513 Double_t z1 = GetZ();
514 if (z2>z1) return 1;
515 if (z2<z1) return -1;
516 return 0;
517 }
518 else {
519 Float_t f2 =1;
6c23ffed 520 f2 = 1-20*TMath::Sqrt(t->GetSigma1Pt2())/(t->OneOverPt()+0.0066);
81e97e0d 521 if (t->fBConstrain) f2=1.2;
522
523 Float_t f1 =1;
6c23ffed 524 f1 = 1-20*TMath::Sqrt(GetSigma1Pt2())/(OneOverPt()+0.0066);
81e97e0d 525
526 if (fBConstrain) f1=1.2;
527
528 if (t->GetNumberOfClusters()*f2 <GetNumberOfClusters()*f1) return -1;
529 else return +1;
530 }
531}
532
533
534
535
536//_____________________________________________________________________________
70e20dcf 537Bool_t AliTPCseed::Update(const AliCluster *c, Double_t chisq, Int_t index)
6c94f330 538{
81e97e0d 539 //-----------------------------------------------------------------
540 // This function associates a cluster with this track.
541 //-----------------------------------------------------------------
81e97e0d 542 Int_t n=GetNumberOfClusters();
70e20dcf 543 Int_t idx=GetClusterIndex(n); // save the current cluster index
544
545 AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
ca521f6c 546 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
547 if (TMath::Abs(dx)>0){
548 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
549 Float_t dy = dx*ty;
550 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
551 cl.SetY(c->GetY()-dy);
552 cl.SetZ(c->GetZ()-dz);
553 }
554
70e20dcf 555 if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
e0e13b88 556
557 if (fCMeanSigmaY2p30<0){
558 fCMeanSigmaY2p30= c->GetSigmaY2(); //! current mean sigma Y2 - mean30%
c07cb486 559 fCMeanSigmaZ2p30= c->GetSigmaZ2(); //! current mean sigma Z2 - mean30%
560 fCMeanSigmaY2p30R = 1; //! current mean sigma Y2 - mean5%
561 fCMeanSigmaZ2p30R = 1; //! current mean sigma Z2 - mean5%
e0e13b88 562 }
563 //
564 fCMeanSigmaY2p30= 0.70*fCMeanSigmaY2p30 +0.30*c->GetSigmaY2();
c07cb486 565 fCMeanSigmaZ2p30= 0.70*fCMeanSigmaZ2p30 +0.30*c->GetSigmaZ2();
566 if (fCurrentSigmaY2>0){
567 fCMeanSigmaY2p30R = 0.7*fCMeanSigmaY2p30R +0.3*c->GetSigmaY2()/fCurrentSigmaY2;
568 fCMeanSigmaZ2p30R = 0.7*fCMeanSigmaZ2p30R +0.3*c->GetSigmaZ2()/fCurrentSigmaZ2;
569 }
e0e13b88 570
81e97e0d 571
70e20dcf 572 SetClusterIndex(n,idx); // restore the current cluster index
6c94f330 573 return kTRUE;
81e97e0d 574}
575
576
577
578//_____________________________________________________________________________
dc5cd41c 579Float_t AliTPCseed::CookdEdx(Double_t low, Double_t up,Int_t i1, Int_t i2, Bool_t /* onlyused */) {
81e97e0d 580 //-----------------------------------------------------------------
581 // This funtion calculates dE/dX within the "low" and "up" cuts.
582 //-----------------------------------------------------------------
2cadb5d1 583 // CookdEdxAnalytical(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Int_t returnVal)
83afd539 584 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
44a6a09e 585
83afd539 586 Int_t row0 = param->GetNRowLow();
587 Int_t row1 = row0+param->GetNRowUp1();
588 Int_t row2 = row1+param->GetNRowUp2();
44a6a09e 589 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
590 Int_t useTot = 0;
591 if (recoParam) useTot = (recoParam->GetUseTotCharge())? 0:1;
83afd539 592 //
593 //
594 //
2cadb5d1 595 fDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 0);
596 fDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 0);
597 fDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 0);
598 fDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 0);
64bf5ca0 599 fDEDX[4] = CookdEdxAnalytical(low,up,useTot ,row0,row2, 0); // full OROC truncated mean
83afd539 600 //
2cadb5d1 601 fSDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 1);
602 fSDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 1);
603 fSDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 1);
604 fSDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 1);
83afd539 605 //
64bf5ca0 606 fNCDEDX[0] = TMath::Nint(GetTPCClustInfo(2, 1, i1 , i2));
607 fNCDEDX[1] = TMath::Nint(GetTPCClustInfo(2, 1, 0 , row0));
608 fNCDEDX[2] = TMath::Nint(GetTPCClustInfo(2, 1, row0, row1));
609 fNCDEDX[3] = TMath::Nint(GetTPCClustInfo(2, 1, row1, row2));
610 //
611 fNCDEDXInclThres[0] = TMath::Nint(GetTPCClustInfo(2, 2, i1 , i2));
612 fNCDEDXInclThres[1] = TMath::Nint(GetTPCClustInfo(2, 2, 0 , row0));
613 fNCDEDXInclThres[2] = TMath::Nint(GetTPCClustInfo(2, 2, row0, row1));
614 fNCDEDXInclThres[3] = TMath::Nint(GetTPCClustInfo(2, 2, row1, row2));
615 //
83afd539 616 SetdEdx(fDEDX[0]);
617 return fDEDX[0];
81e97e0d 618
ba5e52fb 619// return CookdEdxNorm(low,up,0,i1,i2,1,0,2);
4cc7ba77 620
621
ba5e52fb 622// Float_t amp[200];
623// Float_t angular[200];
624// Float_t weight[200];
625// Int_t index[200];
626// //Int_t nc = 0;
627// Float_t meanlog = 100.;
628
629// Float_t mean[4] = {0,0,0,0};
630// Float_t sigma[4] = {1000,1000,1000,1000};
631// Int_t nc[4] = {0,0,0,0};
632// Float_t norm[4] = {1000,1000,1000,1000};
633// //
634// //
635// fNShared =0;
636
637// Float_t gainGG = 1;
638// if (AliTPCcalibDB::Instance()->GetParameters()){
639// gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000.; //relative gas gain
640// }
641
642
643// for (Int_t of =0; of<4; of++){
644// for (Int_t i=of+i1;i<i2;i+=4)
645// {
646// Int_t clindex = fIndex[i];
647// if (clindex<0||clindex&0x8000) continue;
648
649// //AliTPCTrackPoint * point = (AliTPCTrackPoint *) arr.At(i);
650// AliTPCTrackerPoint * point = GetTrackPoint(i);
651// //AliTPCTrackerPoint * pointm = GetTrackPoint(i-1);
652// //AliTPCTrackerPoint * pointp = 0;
653// //if (i<159) pointp = GetTrackPoint(i+1);
654
655// if (point==0) continue;
656// AliTPCclusterMI * cl = fClusterPointer[i];
657// if (cl==0) continue;
658// if (onlyused && (!cl->IsUsed(10))) continue;
659// if (cl->IsUsed(11)) {
660// fNShared++;
661// continue;
662// }
663// Int_t type = cl->GetType();
664// //if (point->fIsShared){
665// // fNShared++;
666// // continue;
667// //}
668// //if (pointm)
669// // if (pointm->fIsShared) continue;
670// //if (pointp)
671// // if (pointp->fIsShared) continue;
672
673// if (type<0) continue;
674// //if (type>10) continue;
675// //if (point->GetErrY()==0) continue;
676// //if (point->GetErrZ()==0) continue;
677
678// //Float_t ddy = (point->GetY()-cl->GetY())/point->GetErrY();
679// //Float_t ddz = (point->GetZ()-cl->GetZ())/point->GetErrZ();
680// //if ((ddy*ddy+ddz*ddz)>10) continue;
681
682
683// // if (point->GetCPoint().GetMax()<5) continue;
684// if (cl->GetMax()<5) continue;
685// Float_t angley = point->GetAngleY();
686// Float_t anglez = point->GetAngleZ();
687
688// Float_t rsigmay2 = point->GetSigmaY();
689// Float_t rsigmaz2 = point->GetSigmaZ();
690// /*
691// Float_t ns = 1.;
692// if (pointm){
693// rsigmay += pointm->GetTPoint().GetSigmaY();
694// rsigmaz += pointm->GetTPoint().GetSigmaZ();
695// ns+=1.;
696// }
697// if (pointp){
698// rsigmay += pointp->GetTPoint().GetSigmaY();
699// rsigmaz += pointp->GetTPoint().GetSigmaZ();
700// ns+=1.;
701// }
702// rsigmay/=ns;
703// rsigmaz/=ns;
704// */
705
706// Float_t rsigma = TMath::Sqrt(rsigmay2*rsigmaz2);
707
708// Float_t ampc = 0; // normalization to the number of electrons
709// if (i>64){
710// // ampc = 1.*point->GetCPoint().GetMax();
711// ampc = 1.*cl->GetMax();
712// //ampc = 1.*point->GetCPoint().GetQ();
713// // AliTPCClusterPoint & p = point->GetCPoint();
714// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.6)) - TMath::Abs(p.GetY()/0.6)+0.5);
715// // Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
716// //Float_t dz =
717// // TMath::Abs( Int_t(iz) - iz + 0.5);
718// //ampc *= 1.15*(1-0.3*dy);
719// //ampc *= 1.15*(1-0.3*dz);
720// // Float_t zfactor = (AliTPCReconstructor::GetCtgRange()-0.0004*TMath::Abs(point->GetCPoint().GetZ()));
721// //ampc *=zfactor;
722// }
723// else{
724// //ampc = 1.0*point->GetCPoint().GetMax();
725// ampc = 1.0*cl->GetMax();
726// //ampc = 1.0*point->GetCPoint().GetQ();
727// //AliTPCClusterPoint & p = point->GetCPoint();
728// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.4)) - TMath::Abs(p.GetY()/0.4)+0.5);
729// //Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
730// //Float_t dz =
731// // TMath::Abs( Int_t(iz) - iz + 0.5);
732
733// //ampc *= 1.15*(1-0.3*dy);
734// //ampc *= 1.15*(1-0.3*dz);
735// // Float_t zfactor = (1.02-0.000*TMath::Abs(point->GetCPoint().GetZ()));
736// //ampc *=zfactor;
737
738// }
739// ampc *= 2.0; // put mean value to channel 50
740// //ampc *= 0.58; // put mean value to channel 50
741// Float_t w = 1.;
742// // if (type>0) w = 1./(type/2.-0.5);
743// // Float_t z = TMath::Abs(cl->GetZ());
744// if (i<64) {
745// ampc /= 0.6;
746// //ampc /= (1+0.0008*z);
747// } else
748// if (i>128){
749// ampc /=1.5;
750// //ampc /= (1+0.0008*z);
751// }else{
752// //ampc /= (1+0.0008*z);
753// }
81e97e0d 754
ba5e52fb 755// if (type<0) { //amp at the border - lower weight
756// // w*= 2.;
81e97e0d 757
ba5e52fb 758// continue;
759// }
760// if (rsigma>1.5) ampc/=1.3; // if big backround
761// amp[nc[of]] = ampc;
762// amp[nc[of]] /=gainGG;
763// angular[nc[of]] = TMath::Sqrt(1.+angley*angley+anglez*anglez);
764// weight[nc[of]] = w;
765// nc[of]++;
766// }
81e97e0d 767
ba5e52fb 768// TMath::Sort(nc[of],amp,index,kFALSE);
769// Float_t sumamp=0;
770// Float_t sumamp2=0;
771// Float_t sumw=0;
772// //meanlog = amp[index[Int_t(nc[of]*0.33)]];
773// meanlog = 50;
774// for (Int_t i=int(nc[of]*low+0.5);i<int(nc[of]*up+0.5);i++){
775// Float_t ampl = amp[index[i]]/angular[index[i]];
776// ampl = meanlog*TMath::Log(1.+ampl/meanlog);
777// //
778// sumw += weight[index[i]];
779// sumamp += weight[index[i]]*ampl;
780// sumamp2 += weight[index[i]]*ampl*ampl;
781// norm[of] += angular[index[i]]*weight[index[i]];
782// }
783// if (sumw<1){
784// SetdEdx(0);
785// }
786// else {
787// norm[of] /= sumw;
788// mean[of] = sumamp/sumw;
789// sigma[of] = sumamp2/sumw-mean[of]*mean[of];
790// if (sigma[of]>0.1)
791// sigma[of] = TMath::Sqrt(sigma[of]);
792// else
793// sigma[of] = 1000;
81e97e0d 794
ba5e52fb 795// mean[of] = (TMath::Exp(mean[of]/meanlog)-1)*meanlog;
796// //mean *=(1-0.02*(sigma/(mean*0.17)-1.));
797// //mean *=(1-0.1*(norm-1.));
798// }
799// }
800
801// Float_t dedx =0;
802// fSdEdx =0;
803// fMAngular =0;
804// // mean[0]*= (1-0.05*(sigma[0]/(0.01+mean[1]*0.18)-1));
805// // mean[1]*= (1-0.05*(sigma[1]/(0.01+mean[0]*0.18)-1));
81e97e0d 806
807
ba5e52fb 808// // dedx = (mean[0]* TMath::Sqrt((1.+nc[0]))+ mean[1]* TMath::Sqrt((1.+nc[1])) )/
809// // ( TMath::Sqrt((1.+nc[0]))+TMath::Sqrt((1.+nc[1])));
810
811// Int_t norm2 = 0;
812// Int_t norm3 = 0;
813// for (Int_t i =0;i<4;i++){
814// if (nc[i]>2&&nc[i]<1000){
815// dedx += mean[i] *nc[i];
816// fSdEdx += sigma[i]*(nc[i]-2);
817// fMAngular += norm[i] *nc[i];
818// norm2 += nc[i];
819// norm3 += nc[i]-2;
820// }
821// fDEDX[i] = mean[i];
822// fSDEDX[i] = sigma[i];
823// fNCDEDX[i]= nc[i];
824// }
825
826// if (norm3>0){
827// dedx /=norm2;
828// fSdEdx /=norm3;
829// fMAngular/=norm2;
830// }
831// else{
832// SetdEdx(0);
833// return 0;
834// }
835// // Float_t dedx1 =dedx;
836// /*
837// dedx =0;
838// for (Int_t i =0;i<4;i++){
839// if (nc[i]>2&&nc[i]<1000){
840// mean[i] = mean[i]*(1-0.12*(sigma[i]/(fSdEdx)-1.));
841// dedx += mean[i] *nc[i];
842// }
843// fDEDX[i] = mean[i];
844// }
845// dedx /= norm2;
846// */
81e97e0d 847
848
ba5e52fb 849// SetdEdx(dedx);
850// return dedx;
81e97e0d 851}
81e97e0d 852
853void AliTPCseed::CookPID()
854{
855 //
856 // cook PID information according dEdx
857 //
858 Double_t fRange = 10.;
859 Double_t fRes = 0.1;
860 Double_t fMIP = 47.;
861 //
862 Int_t ns=AliPID::kSPECIES;
863 Double_t sumr =0;
864 for (Int_t j=0; j<ns; j++) {
865 Double_t mass=AliPID::ParticleMass(j);
6c94f330 866 Double_t mom=GetP();
81e97e0d 867 Double_t dedx=fdEdx/fMIP;
5731b051 868 Double_t bethe=AliMathBase::BetheBlochAleph(mom/mass);
81e97e0d 869 Double_t sigma=fRes*bethe;
870 if (sigma>0.001){
871 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
872 fTPCr[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
873 sumr+=fTPCr[j];
874 continue;
875 }
876 fTPCr[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
877 sumr+=fTPCr[j];
878 }
879 else{
880 fTPCr[j]=1.;
881 sumr+=fTPCr[j];
882 }
883 }
884 for (Int_t j=0; j<ns; j++) {
885 fTPCr[j]/=sumr; //normalize
886 }
887}
888
6c94f330 889Double_t AliTPCseed::GetYat(Double_t xk) const {
890//-----------------------------------------------------------------
891// This function calculates the Y-coordinate of a track at the plane x=xk.
892//-----------------------------------------------------------------
893 if (TMath::Abs(GetSnp())>AliTPCReconstructor::GetMaxSnpTrack()) return 0.; //patch 01 jan 06
60e55aee 894 Double_t c1=GetSnp(), r1=TMath::Sqrt((1.-c1)*(1.+c1));
6c94f330 895 Double_t c2=c1+GetC()*(xk-GetX());
896 if (TMath::Abs(c2)>AliTPCReconstructor::GetMaxSnpTrack()) return 0;
60e55aee 897 Double_t r2=TMath::Sqrt((1.-c2)*(1.+c2));
6c94f330 898 return GetY() + (xk-GetX())*(c1+c2)/(r1+r2);
899}
900
0a65832b 901
902
8a92e133 903Float_t AliTPCseed::CookdEdxNorm(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Bool_t shapeNorm,Int_t posNorm, Int_t padNorm, Int_t returnVal){
0a65832b 904
905 //
906 // calculates dedx using the cluster
907 // low - up specify trunc mean range - default form 0-0.7
8076baa0 908 // type - 1 - max charge or 0- total charge in cluster
909 // //2- max no corr 3- total+ correction
0a65832b 910 // i1-i2 - the pad-row range used for calculation
ba5e52fb 911 // shapeNorm - kTRUE -taken from OCDB
912 //
913 // posNorm - usage of pos normalization
83afd539 914 // padNorm - pad type normalization
915 // returnVal - 0 return mean
916 // - 1 return RMS
917 // - 2 return number of clusters
918 //
0a65832b 919 // normalization parametrization taken from AliTPCClusterParam
920 //
ba5e52fb 921 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
922 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
923 if (!parcl) return 0;
924 if (!param) return 0;
83afd539 925 Int_t row0 = param->GetNRowLow();
926 Int_t row1 = row0+param->GetNRowUp1();
927
0a65832b 928 Float_t amp[160];
929 Int_t indexes[160];
930 Int_t ncl=0;
931 //
932 //
ba5e52fb 933 Float_t gainGG = 1; // gas gain factor -always enabled
934 Float_t gainPad = 1; // gain map - used always
83afd539 935 Float_t corrShape = 1; // correction due angular effect, diffusion and electron attachment
ba5e52fb 936 Float_t corrPos = 1; // local position correction - if posNorm enabled
937 Float_t corrPadType = 1; // pad type correction - if padNorm enabled
938 Float_t corrNorm = 1; // normalization factor - set Q to channel 50
939 //
940 //
941 //
4cc7ba77 942 if (AliTPCcalibDB::Instance()->GetParameters()){
ba5e52fb 943 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
4cc7ba77 944 }
945
0a65832b 946 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
4cc7ba77 947 const Float_t kedgey =3.;
0a65832b 948 //
7cd8ac3f 949 //
0a65832b 950 for (Int_t irow=i1; irow<i2; irow++){
951 AliTPCclusterMI* cluster = GetClusterPointer(irow);
952 if (!cluster) continue;
953 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
8076baa0 954 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
ba5e52fb 955 Int_t ipad= 0;
83afd539 956 if (irow>=row0) ipad=1;
957 if (irow>=row1) ipad=2;
ba5e52fb 958 //
959 //
960 //
961 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
962 if (gainMap) {
963 //
964 // Get gainPad - pad by pad calibration
965 //
d6920632 966 Float_t factor = 1;
967 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
83afd539 968 if (irow < row0) { // IROC
ba5e52fb 969 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
d6920632 970 } else { // OROC
83afd539 971 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
d6920632 972 }
ba5e52fb 973 if (factor>0.5) gainPad=factor;
7cd8ac3f 974 }
ba5e52fb 975 //
976 //do position and angular normalization
977 //
978 if (shapeNorm){
979 if (type<=1){
980 //
981 AliTPCTrackerPoint * point = GetTrackPoint(irow);
982 Float_t ty = TMath::Abs(point->GetAngleY());
83afd539 983 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
ba5e52fb 984
985 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
986 corrShape = parcl->Qnorm(ipad,type,dr,ty,tz);
987 }
0a65832b 988 }
ba5e52fb 989
8a92e133 990 if (posNorm>0){
8e1dcdda 991 //
ba5e52fb 992 // Do position normalization - relative distance to
993 // center of pad- time bin
994 // Work in progress
022a2383 995 // corrPos = parcl->QnormPos(ipad,type, cluster->GetPad(),
996 // cluster->GetTimeBin(), cluster->GetZ(),
997 // cluster->GetSigmaY2(),cluster->GetSigmaZ2(),
998 // cluster->GetMax(),cluster->GetQ());
8a92e133 999 // scaled response function
1000 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1001 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1002 //
1003
022a2383 1004 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1005 Float_t ty = TMath::Abs(point->GetAngleY());
1006 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1007
1008 if (type==1) corrPos =
1009 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1010 cluster->GetTimeBin(),ty,tz,yres0,zres0,0.4);
022a2383 1011 if (type==0) corrPos =
1012 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1013 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,0.4);
1014 if (posNorm==3){
1015 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
1016 Double_t signtgl = (cluster->GetZ()*point->GetAngleZ()>0)? 1:-1;
1017 Double_t p2 = TMath::Abs(TMath::Sin(TMath::ATan(ty)));
1018 Float_t corrHis = parcl->QnormHis(ipad,type,dr,p2,TMath::Abs(point->GetAngleZ())*signtgl);
1019 if (corrHis>0) corrPos*=corrHis;
1020 }
1021
8e1dcdda 1022 }
1023
ba5e52fb 1024 if (padNorm==1){
1025 //taken from OCDB
798017c7 1026 if (type==0 && parcl->QpadTnorm()) corrPadType = (*parcl->QpadTnorm())[ipad];
1027 if (type==1 && parcl->QpadMnorm()) corrPadType = (*parcl->QpadMnorm())[ipad];
022a2383 1028
2fc9608f 1029 }
ba5e52fb 1030 if (padNorm==2){
1031 corrPadType =param->GetPadPitchLength(cluster->GetDetector(),cluster->GetRow());
1032 //use hardwired - temp fix
1033 if (type==0) corrNorm=3.;
1034 if (type==1) corrNorm=1.;
1035 }
1036 //
1037 amp[ncl]=charge;
1038 amp[ncl]/=gainGG;
1039 amp[ncl]/=gainPad;
1040 amp[ncl]/=corrShape;
1041 amp[ncl]/=corrPadType;
1042 amp[ncl]/=corrPos;
1043 amp[ncl]/=corrNorm;
1044 //
0a65832b 1045 ncl++;
1046 }
8076baa0 1047
0a65832b 1048 if (type>3) return ncl;
1049 TMath::Sort(ncl,amp, indexes, kFALSE);
1050
8076baa0 1051 if (ncl<10) return 0;
0a65832b 1052
1053 Float_t suma=0;
83afd539 1054 Float_t suma2=0;
0a65832b 1055 Float_t sumn=0;
1056 Int_t icl0=TMath::Nint(ncl*low);
1057 Int_t icl1=TMath::Nint(ncl*up);
1058 for (Int_t icl=icl0; icl<icl1;icl++){
1059 suma+=amp[indexes[icl]];
83afd539 1060 suma2+=amp[indexes[icl]]*amp[indexes[icl]];
0a65832b 1061 sumn++;
1062 }
83afd539 1063 Float_t mean =suma/sumn;
1064 Float_t rms =TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
3af3fbc4 1065 //
1066 // do time-dependent correction for pressure and temperature variations
1067 UInt_t runNumber = 1;
1068 Float_t corrTimeGain = 1;
1069 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
e5e80ff9 1070 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
1071 if (trans && recoParam->GetUseGainCorrectionTime()>0) {
3af3fbc4 1072 runNumber = trans->GetCurrentRunNumber();
e5e80ff9 1073 //AliTPCcalibDB::Instance()->SetRun(runNumber);
a2c3785e 1074 TObjArray * timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
3af3fbc4 1075 if (timeGainSplines) {
1076 UInt_t time = trans->GetCurrentTimeStamp();
1077 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1078 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1079 if (fitMIP) {
108a67db 1080 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time);/*fitMIP->Eval(time);*/
3af3fbc4 1081 } else {
108a67db 1082 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time);/*fitFPcosmic->Eval(time);*/
3af3fbc4 1083 }
1084 }
1085 }
1086 mean /= corrTimeGain;
1087 rms /= corrTimeGain;
1088 //
83afd539 1089 if (returnVal==1) return rms;
8a92e133 1090 if (returnVal==2) return ncl;
1091 return mean;
1092}
1093
6feb400f 1094Float_t AliTPCseed::CookdEdxAnalytical(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Int_t returnVal, Int_t rowThres, Int_t mode){
8a92e133 1095
1096 //
1097 // calculates dedx using the cluster
1098 // low - up specify trunc mean range - default form 0-0.7
1099 // type - 1 - max charge or 0- total charge in cluster
1100 // //2- max no corr 3- total+ correction
1101 // i1-i2 - the pad-row range used for calculation
1102 //
1103 // posNorm - usage of pos normalization
6feb400f 1104 // returnVal - 0 return mean
1105 // - 1 return RMS
1106 // - 2 return number of clusters
1107 // - 3 ratio
1108 // - 4 mean upper half
1109 // - 5 mean - lower half
1110 // - 6 third moment
1111 // mode - 0 - linear
1112 // - 1 - logatithmic
2efc897f 1113 // rowThres - number of rows before and after given pad row to check for clusters below threshold
8a92e133 1114 //
1115 // normalization parametrization taken from AliTPCClusterParam
1116 //
1117 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
1118 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
1119 if (!parcl) return 0;
1120 if (!param) return 0;
1121 Int_t row0 = param->GetNRowLow();
1122 Int_t row1 = row0+param->GetNRowUp1();
1123
1124 Float_t amp[160];
1125 Int_t indexes[160];
1126 Int_t ncl=0;
2efc897f 1127 Int_t nclBelowThr = 0; // counts number of clusters below threshold
8a92e133 1128 //
1129 //
1130 Float_t gainGG = 1; // gas gain factor -always enabled
1131 Float_t gainPad = 1; // gain map - used always
1132 Float_t corrPos = 1; // local position correction - if posNorm enabled
8a92e133 1133 //
1134 //
1135 //
1136 if (AliTPCcalibDB::Instance()->GetParameters()){
1137 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
1138 }
649fcc43 1139 //
1140 // extract time-dependent correction for pressure and temperature variations
1141 //
1142 UInt_t runNumber = 1;
1143 Float_t corrTimeGain = 1;
1144 TObjArray * timeGainSplines = 0x0;
1145 TGraphErrors * grPadEqual = 0x0;
7e3e1a9c 1146 TGraphErrors* grChamberGain[3]={0x0,0x0,0x0};
649fcc43 1147 //
1148 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
1149 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
6d64657a 1150 //
1151 if (recoParam->GetNeighborRowsDedx() == 0) rowThres = 0;
1152 //
649fcc43 1153 if (trans) {
2efc897f 1154 runNumber = trans->GetCurrentRunNumber();
1155 //AliTPCcalibDB::Instance()->SetRun(runNumber);
1156 timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
1157 if (timeGainSplines && recoParam->GetUseGainCorrectionTime()>0) {
1158 UInt_t time = trans->GetCurrentTimeStamp();
1159 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1160 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1161 if (fitMIP) {
1162 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time); /*fitMIP->Eval(time);*/
649fcc43 1163 } else {
2efc897f 1164 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time); /*fitFPcosmic->Eval(time); */
1165 }
649fcc43 1166 //
1167 if (type==1) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQMAX_PADREGIONGAIN_BEAM_ALL");
1168 if (type==0) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQTOT_PADREGIONGAIN_BEAM_ALL");
7e3e1a9c 1169 const char* names[3]={"SHORT","MEDIUM","LONG"};
1170 for (Int_t iPadRegion=0; iPadRegion<3; ++iPadRegion)
1171 grChamberGain[iPadRegion]=(TGraphErrors*)timeGainSplines->FindObject(Form("TGRAPHERRORS_MEAN_CHAMBERGAIN_%s_BEAM_ALL",names[iPadRegion]));
2efc897f 1172 }
7e3e1a9c 1173 }
2efc897f 1174
1175 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
8a92e133 1176 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1177 const Float_t kedgey =3.;
1178 //
1179 //
1180 for (Int_t irow=i1; irow<i2; irow++){
1181 AliTPCclusterMI* cluster = GetClusterPointer(irow);
736a5826 1182 if (!cluster && irow > 1 && irow < 157) {
2efc897f 1183 Bool_t isClBefore = kFALSE;
1184 Bool_t isClAfter = kFALSE;
1185 for(Int_t ithres = 1; ithres <= rowThres; ithres++) {
1186 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1187 if (clusterBefore) isClBefore = kTRUE;
1188 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1189 if (clusterAfter) isClAfter = kTRUE;
1190 }
1191 if (isClBefore && isClAfter) nclBelowThr++;
2efc897f 1192 }
736a5826 1193 if (!cluster) continue;
2efc897f 1194 //
1195 //
8a92e133 1196 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
2efc897f 1197 //
1198 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1199 if (point==0) continue;
1200 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1201 if (rsigmay > kClusterShapeCut) continue;
1202 //
1203 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1204 //
8a92e133 1205 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
1206 Int_t ipad= 0;
1207 if (irow>=row0) ipad=1;
1208 if (irow>=row1) ipad=2;
1209 //
1210 //
1211 //
1212 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1213 if (gainMap) {
1214 //
1215 // Get gainPad - pad by pad calibration
1216 //
1217 Float_t factor = 1;
1218 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
1219 if (irow < row0) { // IROC
1220 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
1221 } else { // OROC
1222 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
1223 }
2efc897f 1224 if (factor>0.3) gainPad=factor;
8a92e133 1225 }
8a92e133 1226 //
1227 // Do position normalization - relative distance to
1228 // center of pad- time bin
1229
8a92e133 1230 Float_t ty = TMath::Abs(point->GetAngleY());
1231 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1232 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1233 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1234
1235 yres0 *=parcl->GetQnormCorr(ipad, type,0);
1236 zres0 *=parcl->GetQnormCorr(ipad, type,1);
1237 Float_t effLength=parcl->GetQnormCorr(ipad, type,4)*0.5;
1238 Float_t effDiff =(parcl->GetQnormCorr(ipad, type,2)+parcl->GetQnormCorr(ipad, type,3))*0.5;
1239 //
1240 if (type==1) {
1241 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1242 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1243 cluster->GetTimeBin(),ty,tz,yres0,zres0,effLength,effDiff);
1244 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1245 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1246 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1247 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1248 //
1249 }
1250 if (type==0) {
1251 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1252 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1253 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,effLength,effDiff);
1254
1255 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1256 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1257 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1258 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1259 //
1260 }
2efc897f 1261 //
1262 // pad region equalization outside of cluster param
1263 //
1264 Float_t gainEqualPadRegion = 1;
7e3e1a9c 1265 if (grPadEqual && recoParam->GetUseGainCorrectionTime()>0) gainEqualPadRegion = grPadEqual->Eval(ipad);
1266 //
1267 // chamber-by-chamber equalization outside gain map
1268 //
1269 Float_t gainChamber = 1;
1270 if (grChamberGain[ipad] && recoParam->GetUseGainCorrectionTime()>0) gainChamber = grChamberGain[ipad]->Eval(cluster->GetDetector());
8a92e133 1271 //
1272 amp[ncl]=charge;
1273 amp[ncl]/=gainGG;
1274 amp[ncl]/=gainPad;
1275 amp[ncl]/=corrPos;
2efc897f 1276 amp[ncl]/=gainEqualPadRegion;
7e3e1a9c 1277 amp[ncl]/=gainChamber;
8a92e133 1278 //
1279 ncl++;
1280 }
1281
6feb400f 1282 if (type==2) return ncl;
8a92e133 1283 TMath::Sort(ncl,amp, indexes, kFALSE);
2efc897f 1284 //
8a92e133 1285 if (ncl<10) return 0;
2efc897f 1286 //
1287 Double_t * ampWithBelow = new Double_t[ncl + nclBelowThr];
1288 for(Int_t iCl = 0; iCl < ncl + nclBelowThr; iCl++) {
1289 if (iCl < nclBelowThr) {
1290 ampWithBelow[iCl] = amp[indexes[0]];
1291 } else {
1292 ampWithBelow[iCl] = amp[indexes[iCl - nclBelowThr]];
1293 }
1294 }
1295 //printf("DEBUG: %i shit %f", nclBelowThr, amp[indexes[0]]);
1296 //
8a92e133 1297 Float_t suma=0;
1298 Float_t suma2=0;
6feb400f 1299 Float_t suma3=0;
1300 Float_t sumaS=0;
8a92e133 1301 Float_t sumn=0;
6feb400f 1302 // upper,and lower part statistic
1303 Float_t sumL=0, sumL2=0, sumLN=0;
1304 Float_t sumD=0, sumD2=0, sumDN=0;
1305
2efc897f 1306 Int_t icl0=TMath::Nint((ncl + nclBelowThr)*low);
1307 Int_t icl1=TMath::Nint((ncl + nclBelowThr)*up);
6feb400f 1308 Int_t iclm=TMath::Nint((ncl + nclBelowThr)*(low +(up+low)*0.5));
1309 //
8a92e133 1310 for (Int_t icl=icl0; icl<icl1;icl++){
6feb400f 1311 if (ampWithBelow[icl]<0.1) continue;
504dd8df 1312 Double_t camp=ampWithBelow[icl]/corrTimeGain;
1313 if (mode==1) camp= TMath::Log(camp);
6feb400f 1314 if (icl<icl1){
504dd8df 1315 suma+=camp;
1316 suma2+=camp*camp;
1317 suma3+=camp*camp*camp;
1318 sumaS+=TMath::Power(TMath::Abs(camp),1./3.);
6feb400f 1319 sumn++;
1320 }
1321 if (icl>iclm){
504dd8df 1322 sumL+=camp;
1323 sumL2+=camp*camp;
6feb400f 1324 sumLN++;
1325 }
1326 if (icl<=iclm){
504dd8df 1327 sumD+=camp;
1328 sumD2+=camp*camp;
6feb400f 1329 sumDN++;
1330 }
8a92e133 1331 }
0f7547f1 1332 //
1333 Float_t mean = 0;
1334 Float_t meanL = 0;
1335 Float_t meanD = 0; // lower half mean
1336 if (sumn > 1e-30) mean =suma/sumn;
1337 if (sumLN > 1e-30) meanL =sumL/sumLN;
1338 if (sumDN > 1e-30) meanD =(sumD/sumDN);
1339 /*
8a92e133 1340 Float_t mean =suma/sumn;
6feb400f 1341 Float_t meanL = sumL/sumLN;
1342 Float_t meanD =(sumD/sumDN); // lower half mean
0f7547f1 1343 */
28273e26 1344
1345 Float_t rms = 0;
1346 Float_t mean2=0;
1347 Float_t mean3=0;
1348 Float_t meanS=0;
1349
1350 if(sumn>0){
1351 rms = TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
1352 mean2=suma2/sumn;
1353 mean3=suma3/sumn;
1354 meanS=sumaS/sumn;
1355 }
1356
6feb400f 1357 if (mean2>0) mean2=TMath::Power(TMath::Abs(mean2),1./2.);
1358 if (mean3>0) mean3=TMath::Power(TMath::Abs(mean3),1./3.);
1359 if (meanS>0) meanS=TMath::Power(TMath::Abs(meanS),3.);
3af3fbc4 1360 //
6feb400f 1361 if (mode==1) mean=TMath::Exp(mean);
1362 if (mode==1) meanL=TMath::Exp(meanL); // upper truncation
1363 if (mode==1) meanD=TMath::Exp(meanD); // lower truncation
1364 //
1365 delete [] ampWithBelow;
1366
1367
3af3fbc4 1368 //
8a92e133 1369 if (returnVal==1) return rms;
83afd539 1370 if (returnVal==2) return ncl;
6feb400f 1371 if (returnVal==3) return Double_t(nclBelowThr)/Double_t(nclBelowThr+ncl);
1372 if (returnVal==4) return meanL;
1373 if (returnVal==5) return meanD;
1374 if (returnVal==6) return mean2;
1375 if (returnVal==7) return mean3;
1376 if (returnVal==8) return meanS;
83afd539 1377 return mean;
0a65832b 1378}
1379
83afd539 1380
0a65832b 1381
1382
eb02f63a 1383Float_t AliTPCseed::CookShape(Int_t type){
1384 //
1385 //
1386 //
1387 //-----------------------------------------------------------------
1388 // This funtion calculates dE/dX within the "low" and "up" cuts.
1389 //-----------------------------------------------------------------
1390 Float_t means=0;
1391 Float_t meanc=0;
1392 for (Int_t i =0; i<160;i++) {
1393 AliTPCTrackerPoint * point = GetTrackPoint(i);
1394 if (point==0) continue;
1395
1396 AliTPCclusterMI * cl = fClusterPointer[i];
1397 if (cl==0) continue;
1398
1399 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1400 Float_t rsigmaz = TMath::Sqrt(point->GetSigmaZ());
1401 Float_t rsigma = (rsigmay+rsigmaz)*0.5;
1402 if (type==0) means+=rsigma;
1403 if (type==1) means+=rsigmay;
1404 if (type==2) means+=rsigmaz;
1405 meanc++;
1406 }
1407 Float_t mean = (meanc>0)? means/meanc:0;
1408 return mean;
1409}
87e92a27 1410
1411
1412
1413Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
1414 //
1415 // Refit the track
1416 // return value - number of used clusters
1417 //
1418 //
1419 const Int_t kMinNcl =10;
1420 AliTPCseed *track=new AliTPCseed(*seed);
1421 Int_t sector=-1;
1422 // reset covariance
1423 //
1424 Double_t covar[15];
1425 for (Int_t i=0;i<15;i++) covar[i]=0;
1426 covar[0]=10.*10.;
1427 covar[2]=10.*10.;
1428 covar[5]=10.*10./(64.*64.);
1429 covar[9]=10.*10./(64.*64.);
1430 covar[14]=1*1;
1431 //
1432
1433 Float_t xmin=1000, xmax=-10000;
1434 Int_t imin=158, imax=0;
1435 for (Int_t i=0;i<160;i++) {
1436 AliTPCclusterMI *c=track->GetClusterPointer(i);
1791d824 1437 if (!c || (track->GetClusterIndex(i) & 0x8000)) continue;
87e92a27 1438 if (sector<0) sector = c->GetDetector();
1439 if (c->GetX()<xmin) xmin=c->GetX();
1440 if (c->GetX()>xmax) xmax=c->GetX();
1441 if (i<imin) imin=i;
1442 if (i>imax) imax=i;
1443 }
1444 if(imax-imin<kMinNcl) {
1445 delete track;
1446 return 0 ;
1447 }
1448 // Not succes to rotate
1449 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1450 delete track;
1451 return 0;
1452 }
1453 //
1454 //
1455 // fit from inner to outer row
1456 //
1457 AliExternalTrackParam paramIn;
1458 AliExternalTrackParam paramOut;
1459 Bool_t isOK=kTRUE;
be34cb88 1460 Int_t ncl=0;
87e92a27 1461 //
1462 //
1463 //
1464 for (Int_t i=imin; i<=imax; i++){
1465 AliTPCclusterMI *c=track->GetClusterPointer(i);
1791d824 1466 if (!c || (track->GetClusterIndex(i) & 0x8000)) continue;
87e92a27 1467 // if (RejectCluster(c,track)) continue;
be34cb88 1468 sector = (c->GetDetector()%18);
1469 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1470 //continue;
1471 }
87e92a27 1472 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1473 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1474 if (!track->PropagateTo(r[0])) {
1475 isOK=kFALSE;
87e92a27 1476 }
1477 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1478 }
1479 if (!isOK) { delete track; return 0;}
1480 track->AddCovariance(covar);
1481 //
1482 //
1483 //
1484 for (Int_t i=imax; i>=imin; i--){
1485 AliTPCclusterMI *c=track->GetClusterPointer(i);
1791d824 1486 if (!c || (track->GetClusterIndex(i) & 0x8000)) continue;
87e92a27 1487 //if (RejectCluster(c,track)) continue;
be34cb88 1488 sector = (c->GetDetector()%18);
1489 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1490 //continue;
1491 }
87e92a27 1492 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1493 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1494 if (!track->PropagateTo(r[0])) {
1495 isOK=kFALSE;
87e92a27 1496 }
1497 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1498 }
be34cb88 1499 //if (!isOK) { delete track; return 0;}
87e92a27 1500 paramIn = *track;
1501 track->AddCovariance(covar);
1502 //
1503 //
1504 for (Int_t i=imin; i<=imax; i++){
1505 AliTPCclusterMI *c=track->GetClusterPointer(i);
1791d824 1506 if (!c || (track->GetClusterIndex(i) & 0x8000)) continue;
be34cb88 1507 sector = (c->GetDetector()%18);
1508 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1509 //continue;
1510 }
1511 ncl++;
87e92a27 1512 //if (RejectCluster(c,track)) continue;
1513 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1514 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1515 if (!track->PropagateTo(r[0])) {
1516 isOK=kFALSE;
87e92a27 1517 }
1518 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1519 }
be34cb88 1520 //if (!isOK) { delete track; return 0;}
87e92a27 1521 paramOut=*track;
87e92a27 1522 //
1523 //
1524 //
1525 if (parin) (*parin)=paramIn;
1526 if (parout) (*parout)=paramOut;
6e23caff 1527 delete track;
be34cb88 1528 return ncl;
87e92a27 1529}
1530
1531
1532
1533Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
1534 //
1535 //
1536 //
1537 return kFALSE;
1538}
3247d397 1539
1540
1541
1542
1543
1544
1545void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1546 Double_t& erry, Double_t &errz)
1547{
1548 //
1549 // Get cluster error at given position
1550 //
1551 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1552 Double_t tany,tanz;
1553 Double_t snp1=param->GetSnp();
60e55aee 1554 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1555 //
1556 Double_t tgl1=param->GetTgl();
60e55aee 1557 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1558 //
1559 Int_t padSize = 0; // short pads
1560 if (cluster->GetDetector() >= 36) {
1561 padSize = 1; // medium pads
1562 if (cluster->GetRow() > 63) padSize = 2; // long pads
1563 }
1564
1565 erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
1566 errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
1567}
1568
1569
1570void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1571 Double_t& rmsy, Double_t &rmsz)
1572{
1573 //
1574 // Get cluster error at given position
1575 //
1576 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1577 Double_t tany,tanz;
1578 Double_t snp1=param->GetSnp();
60e55aee 1579 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1580 //
1581 Double_t tgl1=param->GetTgl();
60e55aee 1582 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1583 //
1584 Int_t padSize = 0; // short pads
1585 if (cluster->GetDetector() >= 36) {
1586 padSize = 1; // medium pads
1587 if (cluster->GetRow() > 63) padSize = 2; // long pads
1588 }
1589
1590 rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
1591 rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
1592}
ba5e52fb 1593
1594
1595
1596Double_t AliTPCseed::GetQCorrGeom(Float_t ty, Float_t tz){
1597 //Geoetrical
1598 //ty - tangent in local y direction
1599 //tz - tangent
1600 //
1601 Float_t norm=TMath::Sqrt(1+ty*ty+tz*tz);
1602 return norm;
1603}
1604
83afd539 1605Double_t AliTPCseed::GetQCorrShape(Int_t ipad, Int_t type,Float_t z, Float_t ty, Float_t tz, Float_t /*q*/, Float_t /*thr*/){
ba5e52fb 1606 //
1607 // Q normalization
1608 //
1609 // return value = Q Normalization factor
1610 // Normalization - 1 - shape factor part for full drift
1611 // 1 - electron attachment for 0 drift
1612
1613 // Input parameters:
1614 //
1615 // ipad - 0 short pad
1616 // 1 medium pad
1617 // 2 long pad
1618 //
1619 // type - 0 qmax
1620 // - 1 qtot
1621 //
1622 //z - z position (-250,250 cm)
1623 //ty - tangent in local y direction
1624 //tz - tangent
1625 //
1626
1627 AliTPCClusterParam * paramCl = AliTPCcalibDB::Instance()->GetClusterParam();
1628 AliTPCParam * paramTPC = AliTPCcalibDB::Instance()->GetParameters();
1629
1630 if (!paramCl) return 1;
1631 //
1632 Double_t dr = 250.-TMath::Abs(z);
1633 Double_t sy = paramCl->GetRMS0( 0,ipad, dr, TMath::Abs(ty));
1634 Double_t sy0= paramCl->GetRMS0(0,ipad, 250, 0);
1635 Double_t sz = paramCl->GetRMS0( 1,ipad, dr, TMath::Abs(tz));
1636 Double_t sz0= paramCl->GetRMS0(1,ipad, 250, 0);
1637
1638 Double_t sfactorMax = TMath::Sqrt(sy0*sz0/(sy*sz));
1639
1640
1641 Double_t dt = 1000000*(dr/paramTPC->GetDriftV()); //time in microsecond
1642 Double_t attProb = TMath::Exp(-paramTPC->GetAttCoef()*paramTPC->GetOxyCont()*dt);
1643 //
1644 //
1645 if (type==0) return sfactorMax*attProb;
1646
1647 return attProb;
1648
1649
1650}
1651
64bf5ca0 1652
1653//_______________________________________________________________________
1654Float_t AliTPCseed::GetTPCClustInfo(Int_t nNeighbours, Int_t type, Int_t row0, Int_t row1)
1655{
1656 //
1657 // TPC cluster information
1658 // type 0: get fraction of found/findable clusters with neighbourhood definition
1659 // 1: found clusters
1660 // 2: findable (number of clusters above and below threshold)
1661 //
1662 // definition of findable clusters:
1663 // a cluster is defined as findable if there is another cluster
1664 // within +- nNeighbours pad rows. The idea is to overcome threshold
1665 // effects with a very simple algorithm.
1666 //
1667
1668 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
1669 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1670 const Float_t kedgey =3.;
1671
1672 Float_t ncl = 0;
1673 Float_t nclBelowThr = 0; // counts number of clusters below threshold
1674
1675 for (Int_t irow=row0; irow<row1; irow++){
1676 AliTPCclusterMI* cluster = GetClusterPointer(irow);
1677
1678 if (!cluster && irow > 1 && irow < 157) {
1679 Bool_t isClBefore = kFALSE;
1680 Bool_t isClAfter = kFALSE;
1681 for(Int_t ithres = 1; ithres <= nNeighbours; ithres++) {
1682 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1683 if (clusterBefore) isClBefore = kTRUE;
1684 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1685 if (clusterAfter) isClAfter = kTRUE;
1686 }
1687 if (isClBefore && isClAfter) nclBelowThr++;
1688 }
1689 if (!cluster) continue;
1690 //
1691 //
1692 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
1693 //
1694 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1695 if (point==0) continue;
1696 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1697 if (rsigmay > kClusterShapeCut) continue;
1698 //
1699 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1700 ncl++;
1701 }
1702
1703 if(ncl<10)
1704 return 0;
1705 if(type==0)
1706 if(nclBelowThr+ncl>0)
1707 return ncl/(nclBelowThr+ncl);
1708 if(type==1)
1709 return ncl;
1710 if(type==2)
1711 return ncl+nclBelowThr;
1712 return 0;
1713}
1791d824 1714//_______________________________________________________________________
1715Int_t AliTPCseed::GetNumberOfClustersIndices() {
1716 Int_t ncls = 0;
1717 for (int i=0; i < 160; i++) {
1718 if ((fIndex[i] & 0x8000) == 0)
1719 ncls++;
1720 }
1721 return ncls;
1722}
f06a1ff6 1723
1724//_______________________________________________________________________
1725void AliTPCseed::Clear(Option_t*)
1726{
1727 // formally seed may allocate memory for clusters (althought this should not happen for
1728 // the seeds in the pool). Hence we need this method for fwd. compatibility
1729 if (fClusterOwner) for (int i=160;i--;) {delete fClusterPointer[i]; fClusterPointer[i] = 0;}
1730}