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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),
e546b023 72 fCircular(0)
32fab534 73{
81e97e0d 74 //
5c09947e 75 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 76 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
77 for (Int_t i=0;i<3;i++) fKinkIndexes[i]=0;
32fab534 78 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0.2;
79 for (Int_t i=0;i<4;i++) {
80 fDEDX[i] = 0.;
81 fSDEDX[i] = 1e10;
82 fNCDEDX[i] = 0;
9c0db267 83 fNCDEDXInclThres[i] = 0;
32fab534 84 }
9c0db267 85 fDEDX[4] = 0;
32fab534 86 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 87}
32fab534 88
2928bdf0 89AliTPCseed::AliTPCseed(const AliTPCseed &s, Bool_t clusterOwner):
32fab534 90 AliTPCtrack(s),
91 fEsd(0x0),
2928bdf0 92 fClusterOwner(clusterOwner),
32fab534 93 fRow(0),
94 fSector(-1),
95 fRelativeSector(-1),
c07cb486 96 fCurrentSigmaY2(-1),
97 fCurrentSigmaZ2(-1),
e0e13b88 98 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
99 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 100 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
101 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 102 fErrorY2(1e10),
103 fErrorZ2(1e10),
104 fCurrentCluster(0x0),
105 fCurrentClusterIndex1(-1),
106 fInDead(kFALSE),
107 fIsSeeding(kFALSE),
108 fNoCluster(0),
109 fSort(0),
110 fBSigned(kFALSE),
111 fSeedType(0),
112 fSeed1(-1),
113 fSeed2(-1),
114 fMAngular(0),
e546b023 115 fCircular(0)
32fab534 116{
81e97e0d 117 //---------------------
118 // dummy copy constructor
119 //-------------------------
2928bdf0 120 for (Int_t i=0;i<160;i++) {
121 fClusterPointer[i]=0;
122 if (fClusterOwner){
123 if (s.fClusterPointer[i])
124 fClusterPointer[i] = new AliTPCclusterMI(*(s.fClusterPointer[i]));
125 }else{
126 fClusterPointer[i] = s.fClusterPointer[i];
127 }
128 fTrackPoints[i] = s.fTrackPoints[i];
129 }
81e97e0d 130 for (Int_t i=0;i<160;i++) fIndex[i] = s.fIndex[i];
5c09947e 131 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=s.fTPCr[i];
132 for (Int_t i=0;i<4;i++) {
133 fDEDX[i] = s.fDEDX[i];
134 fSDEDX[i] = s.fSDEDX[i];
135 fNCDEDX[i] = s.fNCDEDX[i];
9c0db267 136 fNCDEDXInclThres[i] = s.fNCDEDXInclThres[i];
5c09947e 137 }
9c0db267 138 fDEDX[4] = s.fDEDX[4];
5c09947e 139 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = s.fOverlapLabels[i];
19b00333 140
81e97e0d 141}
5c09947e 142
143
32fab534 144AliTPCseed::AliTPCseed(const AliTPCtrack &t):
145 AliTPCtrack(t),
146 fEsd(0x0),
2928bdf0 147 fClusterOwner(kFALSE),
32fab534 148 fRow(0),
149 fSector(-1),
150 fRelativeSector(-1),
c07cb486 151 fCurrentSigmaY2(-1),
152 fCurrentSigmaZ2(-1),
e0e13b88 153 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
154 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 155 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
156 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 157 fErrorY2(1e10),
158 fErrorZ2(1e10),
159 fCurrentCluster(0x0),
160 fCurrentClusterIndex1(-1),
161 fInDead(kFALSE),
162 fIsSeeding(kFALSE),
163 fNoCluster(0),
164 fSort(0),
165 fBSigned(kFALSE),
166 fSeedType(0),
167 fSeed1(-1),
168 fSeed2(-1),
169 fMAngular(0),
e546b023 170 fCircular(0)
32fab534 171{
81e97e0d 172 //
32fab534 173 // Constructor from AliTPCtrack
174 //
175 fFirstPoint =0;
105b1b81 176 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
81e97e0d 177 for (Int_t i=0;i<160;i++) {
178 fClusterPointer[i] = 0;
179 Int_t index = t.GetClusterIndex(i);
180 if (index>=-1){
181 SetClusterIndex2(i,index);
182 }
183 else{
184 SetClusterIndex2(i,-3);
185 }
186 }
32fab534 187 for (Int_t i=0;i<4;i++) {
188 fDEDX[i] = 0.;
189 fSDEDX[i] = 1e10;
190 fNCDEDX[i] = 0;
9c0db267 191 fNCDEDXInclThres[i] = 0;
32fab534 192 }
9c0db267 193 fDEDX[4] = 0;
32fab534 194 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 195}
196
6c94f330 197AliTPCseed::AliTPCseed(Double_t xr, Double_t alpha, const Double_t xx[5],
198 const Double_t cc[15], Int_t index):
199 AliTPCtrack(xr, alpha, xx, cc, index),
32fab534 200 fEsd(0x0),
2928bdf0 201 fClusterOwner(kFALSE),
32fab534 202 fRow(0),
203 fSector(-1),
204 fRelativeSector(-1),
c07cb486 205 fCurrentSigmaY2(-1),
206 fCurrentSigmaZ2(-1),
e0e13b88 207 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
208 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 209 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
210 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 211 fErrorY2(1e10),
212 fErrorZ2(1e10),
213 fCurrentCluster(0x0),
214 fCurrentClusterIndex1(-1),
215 fInDead(kFALSE),
216 fIsSeeding(kFALSE),
217 fNoCluster(0),
218 fSort(0),
219 fBSigned(kFALSE),
220 fSeedType(0),
221 fSeed1(-1),
222 fSeed2(-1),
223 fMAngular(0),
e546b023 224 fCircular(0)
32fab534 225{
226 //
227 // Constructor
81e97e0d 228 //
32fab534 229 fFirstPoint =0;
5c09947e 230 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 231 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
81e97e0d 232 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
32fab534 233 for (Int_t i=0;i<4;i++) {
234 fDEDX[i] = 0.;
235 fSDEDX[i] = 1e10;
236 fNCDEDX[i] = 0;
9c0db267 237 fNCDEDXInclThres[i] = 0;
32fab534 238 }
9c0db267 239 fDEDX[4] = 0;
32fab534 240 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 241}
242
243AliTPCseed::~AliTPCseed(){
244 //
245 // destructor
81e97e0d 246 fNoCluster =0;
2928bdf0 247 if (fClusterOwner){
248 for (Int_t icluster=0; icluster<160; icluster++){
249 delete fClusterPointer[icluster];
250 }
251 }
bfb57b6c 252
81e97e0d 253}
179c6296 254//_________________________________________________
316c6cd9 255AliTPCseed & AliTPCseed::operator=(const AliTPCseed &param)
179c6296 256{
257 //
316c6cd9 258 // assignment operator
179c6296 259 //
316c6cd9 260 if(this!=&param){
261 AliTPCtrack::operator=(param);
262 fEsd =param.fEsd;
316c6cd9 263 fClusterOwner = param.fClusterOwner;
f06a1ff6 264 if (!fClusterOwner) for(Int_t i = 0;i<160;++i)fClusterPointer[i] = param.fClusterPointer[i];
265 else for(Int_t i = 0;i<160;++i)fClusterPointer[i] = new AliTPCclusterMI(*(param.fClusterPointer[i]));
316c6cd9 266 // leave out fPoint, they are also not copied in the copy ctor...
267 // but deleted in the dtor... strange...
316c6cd9 268 fRow = param.fRow;
269 fSector = param.fSector;
270 fRelativeSector = param.fRelativeSector;
271 fCurrentSigmaY2 = param.fCurrentSigmaY2;
272 fCurrentSigmaZ2 = param.fCurrentSigmaZ2;
273 fErrorY2 = param.fErrorY2;
274 fErrorZ2 = param.fErrorZ2;
275 fCurrentCluster = param.fCurrentCluster; // this is not allocated by AliTPCSeed
276 fCurrentClusterIndex1 = param.fCurrentClusterIndex1;
277 fInDead = param.fInDead;
278 fIsSeeding = param.fIsSeeding;
279 fNoCluster = param.fNoCluster;
280 fSort = param.fSort;
281 fBSigned = param.fBSigned;
282 for(Int_t i = 0;i<4;++i){
283 fDEDX[i] = param.fDEDX[i];
284 fSDEDX[i] = param.fSDEDX[i];
285 fNCDEDX[i] = param.fNCDEDX[i];
9c0db267 286 fNCDEDXInclThres[i] = param.fNCDEDXInclThres[i];
316c6cd9 287 }
9c0db267 288 fDEDX[4] = param.fDEDX[4];
316c6cd9 289 for(Int_t i = 0;i<AliPID::kSPECIES;++i)fTPCr[i] = param.fTPCr[i];
290
291 fSeedType = param.fSeedType;
292 fSeed1 = param.fSeed1;
293 fSeed2 = param.fSeed2;
294 for(Int_t i = 0;i<12;++i)fOverlapLabels[i] = param.fOverlapLabels[i];
295 fMAngular = param.fMAngular;
296 fCircular = param.fCircular;
297 for(int i = 0;i<160;++i)fTrackPoints[i] = param.fTrackPoints[i];
316c6cd9 298 }
179c6296 299 return (*this);
300}
301//____________________________________________________
81e97e0d 302AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
303{
304 //
305 //
306 return &fTrackPoints[i];
307}
308
81e97e0d 309
310
311Double_t AliTPCseed::GetDensityFirst(Int_t n)
312{
313 //
314 //
315 // return cluster for n rows bellow first point
316 Int_t nfoundable = 1;
317 Int_t nfound = 1;
318 for (Int_t i=fLastPoint-1;i>0&&nfoundable<n; i--){
319 Int_t index = GetClusterIndex2(i);
320 if (index!=-1) nfoundable++;
321 if (index>0) nfound++;
322 }
323 if (nfoundable<n) return 0;
324 return Double_t(nfound)/Double_t(nfoundable);
325
326}
327
328
329void AliTPCseed::GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2)
330{
331 // get cluster stat. on given region
332 //
333 found = 0;
334 foundable = 0;
335 shared =0;
336 for (Int_t i=first;i<last; i++){
337 Int_t index = GetClusterIndex2(i);
338 if (index!=-1) foundable++;
6d493ea0 339 if (index&0x8000) continue;
81e97e0d 340 if (fClusterPointer[i]) {
341 found++;
342 }
343 else
344 continue;
345
346 if (fClusterPointer[i]->IsUsed(10)) {
347 shared++;
348 continue;
349 }
350 if (!plus2) continue; //take also neighborhoud
351 //
352 if ( (i>0) && fClusterPointer[i-1]){
353 if (fClusterPointer[i-1]->IsUsed(10)) {
354 shared++;
355 continue;
356 }
357 }
358 if ( fClusterPointer[i+1]){
359 if (fClusterPointer[i+1]->IsUsed(10)) {
360 shared++;
361 continue;
362 }
363 }
364
365 }
366 //if (shared>found){
367 //Error("AliTPCseed::GetClusterStatistic","problem\n");
368 //}
369}
370
371
372
373
374
375void AliTPCseed::Reset(Bool_t all)
376{
377 //
378 //
379 SetNumberOfClusters(0);
380 fNFoundable = 0;
381 SetChi2(0);
6c94f330 382 ResetCovariance(10.);
81e97e0d 383 /*
384 if (fTrackPoints){
385 for (Int_t i=0;i<8;i++){
386 delete [] fTrackPoints[i];
387 }
388 delete fTrackPoints;
389 fTrackPoints =0;
390 }
391 */
392
393 if (all){
f06a1ff6 394 for (Int_t i=200;i--;) SetClusterIndex2(i,-3);
395 if (!fClusterOwner) for (Int_t i=160;i--;) fClusterPointer[i]=0;
396 else for (Int_t i=160;i--;) {delete fClusterPointer[i]; fClusterPointer[i]=0;}
81e97e0d 397 }
398
399}
400
401
402void AliTPCseed::Modify(Double_t factor)
403{
404
405 //------------------------------------------------------------------
406 //This function makes a track forget its history :)
407 //------------------------------------------------------------------
408 if (factor<=0) {
6c94f330 409 ResetCovariance(10.);
81e97e0d 410 return;
411 }
6c94f330 412 ResetCovariance(factor);
413
81e97e0d 414 SetNumberOfClusters(0);
415 fNFoundable =0;
416 SetChi2(0);
417 fRemoval = 0;
418 fCurrentSigmaY2 = 0.000005;
419 fCurrentSigmaZ2 = 0.000005;
420 fNoCluster = 0;
421 //fFirstPoint = 160;
422 //fLastPoint = 0;
423}
424
425
426
427
428Int_t AliTPCseed::GetProlongation(Double_t xk, Double_t &y, Double_t & z) const
429{
430 //-----------------------------------------------------------------
431 // This function find proloncation of a track to a reference plane x=xk.
432 // doesn't change internal state of the track
433 //-----------------------------------------------------------------
434
6c94f330 435 Double_t x1=GetX(), x2=x1+(xk-x1), dx=x2-x1;
81e97e0d 436
6c94f330 437 if (TMath::Abs(GetSnp()+GetC()*dx) >= AliTPCReconstructor::GetMaxSnpTrack()) {
81e97e0d 438 return 0;
439 }
440
441 // Double_t y1=fP0, z1=fP1;
60e55aee 442 Double_t c1=GetSnp(), r1=sqrt((1.-c1)*(1.+c1));
443 Double_t c2=c1 + GetC()*dx, r2=sqrt((1.-c2)*(1.+c2));
81e97e0d 444
6c94f330 445 y = GetY();
446 z = GetZ();
81e97e0d 447 //y += dx*(c1+c2)/(r1+r2);
448 //z += dx*(c1+c2)/(c1*r2 + c2*r1)*fP3;
449
450 Double_t dy = dx*(c1+c2)/(r1+r2);
451 Double_t dz = 0;
452 //
6c94f330 453 Double_t delta = GetC()*dx*(c1+c2)/(c1*r2 + c2*r1);
81e97e0d 454 /*
455 if (TMath::Abs(delta)>0.0001){
456 dz = fP3*TMath::ASin(delta)/fP4;
457 }else{
458 dz = dx*fP3*(c1+c2)/(c1*r2 + c2*r1);
459 }
460 */
461 // dz = fP3*AliTPCFastMath::FastAsin(delta)/fP4;
6c94f330 462 dz = GetTgl()*TMath::ASin(delta)/GetC();
81e97e0d 463 //
464 y+=dy;
465 z+=dz;
466
467
468 return 1;
469}
470
471
472//_____________________________________________________________________________
af32720d 473Double_t AliTPCseed::GetPredictedChi2(const AliCluster *c) const
81e97e0d 474{
475 //-----------------------------------------------------------------
476 // This function calculates a predicted chi2 increment.
477 //-----------------------------------------------------------------
6c94f330 478 Double_t p[2]={c->GetY(), c->GetZ()};
479 Double_t cov[3]={fErrorY2, 0., fErrorZ2};
9c7b8249 480
481 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
482 if (TMath::Abs(dx)>0){
483 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
484 Float_t dy = dx*ty;
485 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
486 p[0] = c->GetY()-dy;
487 p[1] = c->GetZ()-dz;
488 }
6c94f330 489 return AliExternalTrackParam::GetPredictedChi2(p,cov);
81e97e0d 490}
491
81e97e0d 492//_________________________________________________________________________________________
493
494
495Int_t AliTPCseed::Compare(const TObject *o) const {
496 //-----------------------------------------------------------------
497 // This function compares tracks according to the sector - for given sector according z
498 //-----------------------------------------------------------------
499 AliTPCseed *t=(AliTPCseed*)o;
6c94f330 500
81e97e0d 501 if (fSort == 0){
502 if (t->fRelativeSector>fRelativeSector) return -1;
503 if (t->fRelativeSector<fRelativeSector) return 1;
504 Double_t z2 = t->GetZ();
505 Double_t z1 = GetZ();
506 if (z2>z1) return 1;
507 if (z2<z1) return -1;
508 return 0;
509 }
510 else {
511 Float_t f2 =1;
6c23ffed 512 f2 = 1-20*TMath::Sqrt(t->GetSigma1Pt2())/(t->OneOverPt()+0.0066);
81e97e0d 513 if (t->fBConstrain) f2=1.2;
514
515 Float_t f1 =1;
6c23ffed 516 f1 = 1-20*TMath::Sqrt(GetSigma1Pt2())/(OneOverPt()+0.0066);
81e97e0d 517
518 if (fBConstrain) f1=1.2;
519
520 if (t->GetNumberOfClusters()*f2 <GetNumberOfClusters()*f1) return -1;
521 else return +1;
522 }
523}
524
525
526
527
528//_____________________________________________________________________________
70e20dcf 529Bool_t AliTPCseed::Update(const AliCluster *c, Double_t chisq, Int_t index)
6c94f330 530{
81e97e0d 531 //-----------------------------------------------------------------
532 // This function associates a cluster with this track.
533 //-----------------------------------------------------------------
81e97e0d 534 Int_t n=GetNumberOfClusters();
70e20dcf 535 Int_t idx=GetClusterIndex(n); // save the current cluster index
536
537 AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
ca521f6c 538 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
539 if (TMath::Abs(dx)>0){
540 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
541 Float_t dy = dx*ty;
542 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
543 cl.SetY(c->GetY()-dy);
544 cl.SetZ(c->GetZ()-dz);
545 }
546
70e20dcf 547 if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
e0e13b88 548
549 if (fCMeanSigmaY2p30<0){
550 fCMeanSigmaY2p30= c->GetSigmaY2(); //! current mean sigma Y2 - mean30%
c07cb486 551 fCMeanSigmaZ2p30= c->GetSigmaZ2(); //! current mean sigma Z2 - mean30%
552 fCMeanSigmaY2p30R = 1; //! current mean sigma Y2 - mean5%
553 fCMeanSigmaZ2p30R = 1; //! current mean sigma Z2 - mean5%
e0e13b88 554 }
555 //
556 fCMeanSigmaY2p30= 0.70*fCMeanSigmaY2p30 +0.30*c->GetSigmaY2();
c07cb486 557 fCMeanSigmaZ2p30= 0.70*fCMeanSigmaZ2p30 +0.30*c->GetSigmaZ2();
558 if (fCurrentSigmaY2>0){
559 fCMeanSigmaY2p30R = 0.7*fCMeanSigmaY2p30R +0.3*c->GetSigmaY2()/fCurrentSigmaY2;
560 fCMeanSigmaZ2p30R = 0.7*fCMeanSigmaZ2p30R +0.3*c->GetSigmaZ2()/fCurrentSigmaZ2;
561 }
e0e13b88 562
81e97e0d 563
70e20dcf 564 SetClusterIndex(n,idx); // restore the current cluster index
6c94f330 565 return kTRUE;
81e97e0d 566}
567
568
569
570//_____________________________________________________________________________
dc5cd41c 571Float_t AliTPCseed::CookdEdx(Double_t low, Double_t up,Int_t i1, Int_t i2, Bool_t /* onlyused */) {
81e97e0d 572 //-----------------------------------------------------------------
573 // This funtion calculates dE/dX within the "low" and "up" cuts.
574 //-----------------------------------------------------------------
2cadb5d1 575 // CookdEdxAnalytical(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Int_t returnVal)
83afd539 576 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
44a6a09e 577
83afd539 578 Int_t row0 = param->GetNRowLow();
579 Int_t row1 = row0+param->GetNRowUp1();
580 Int_t row2 = row1+param->GetNRowUp2();
44a6a09e 581 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
582 Int_t useTot = 0;
583 if (recoParam) useTot = (recoParam->GetUseTotCharge())? 0:1;
83afd539 584 //
585 //
586 //
2cadb5d1 587 fDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 0);
588 fDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 0);
589 fDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 0);
590 fDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 0);
64bf5ca0 591 fDEDX[4] = CookdEdxAnalytical(low,up,useTot ,row0,row2, 0); // full OROC truncated mean
83afd539 592 //
2cadb5d1 593 fSDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 1);
594 fSDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 1);
595 fSDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 1);
596 fSDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 1);
83afd539 597 //
64bf5ca0 598 fNCDEDX[0] = TMath::Nint(GetTPCClustInfo(2, 1, i1 , i2));
599 fNCDEDX[1] = TMath::Nint(GetTPCClustInfo(2, 1, 0 , row0));
600 fNCDEDX[2] = TMath::Nint(GetTPCClustInfo(2, 1, row0, row1));
601 fNCDEDX[3] = TMath::Nint(GetTPCClustInfo(2, 1, row1, row2));
602 //
603 fNCDEDXInclThres[0] = TMath::Nint(GetTPCClustInfo(2, 2, i1 , i2));
604 fNCDEDXInclThres[1] = TMath::Nint(GetTPCClustInfo(2, 2, 0 , row0));
605 fNCDEDXInclThres[2] = TMath::Nint(GetTPCClustInfo(2, 2, row0, row1));
606 fNCDEDXInclThres[3] = TMath::Nint(GetTPCClustInfo(2, 2, row1, row2));
607 //
83afd539 608 SetdEdx(fDEDX[0]);
609 return fDEDX[0];
81e97e0d 610
ba5e52fb 611// return CookdEdxNorm(low,up,0,i1,i2,1,0,2);
4cc7ba77 612
613
ba5e52fb 614// Float_t amp[200];
615// Float_t angular[200];
616// Float_t weight[200];
617// Int_t index[200];
618// //Int_t nc = 0;
619// Float_t meanlog = 100.;
620
621// Float_t mean[4] = {0,0,0,0};
622// Float_t sigma[4] = {1000,1000,1000,1000};
623// Int_t nc[4] = {0,0,0,0};
624// Float_t norm[4] = {1000,1000,1000,1000};
625// //
626// //
627// fNShared =0;
628
629// Float_t gainGG = 1;
630// if (AliTPCcalibDB::Instance()->GetParameters()){
631// gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000.; //relative gas gain
632// }
633
634
635// for (Int_t of =0; of<4; of++){
636// for (Int_t i=of+i1;i<i2;i+=4)
637// {
638// Int_t clindex = fIndex[i];
639// if (clindex<0||clindex&0x8000) continue;
640
641// //AliTPCTrackPoint * point = (AliTPCTrackPoint *) arr.At(i);
642// AliTPCTrackerPoint * point = GetTrackPoint(i);
643// //AliTPCTrackerPoint * pointm = GetTrackPoint(i-1);
644// //AliTPCTrackerPoint * pointp = 0;
645// //if (i<159) pointp = GetTrackPoint(i+1);
646
647// if (point==0) continue;
648// AliTPCclusterMI * cl = fClusterPointer[i];
649// if (cl==0) continue;
650// if (onlyused && (!cl->IsUsed(10))) continue;
651// if (cl->IsUsed(11)) {
652// fNShared++;
653// continue;
654// }
655// Int_t type = cl->GetType();
656// //if (point->fIsShared){
657// // fNShared++;
658// // continue;
659// //}
660// //if (pointm)
661// // if (pointm->fIsShared) continue;
662// //if (pointp)
663// // if (pointp->fIsShared) continue;
664
665// if (type<0) continue;
666// //if (type>10) continue;
667// //if (point->GetErrY()==0) continue;
668// //if (point->GetErrZ()==0) continue;
669
670// //Float_t ddy = (point->GetY()-cl->GetY())/point->GetErrY();
671// //Float_t ddz = (point->GetZ()-cl->GetZ())/point->GetErrZ();
672// //if ((ddy*ddy+ddz*ddz)>10) continue;
673
674
675// // if (point->GetCPoint().GetMax()<5) continue;
676// if (cl->GetMax()<5) continue;
677// Float_t angley = point->GetAngleY();
678// Float_t anglez = point->GetAngleZ();
679
680// Float_t rsigmay2 = point->GetSigmaY();
681// Float_t rsigmaz2 = point->GetSigmaZ();
682// /*
683// Float_t ns = 1.;
684// if (pointm){
685// rsigmay += pointm->GetTPoint().GetSigmaY();
686// rsigmaz += pointm->GetTPoint().GetSigmaZ();
687// ns+=1.;
688// }
689// if (pointp){
690// rsigmay += pointp->GetTPoint().GetSigmaY();
691// rsigmaz += pointp->GetTPoint().GetSigmaZ();
692// ns+=1.;
693// }
694// rsigmay/=ns;
695// rsigmaz/=ns;
696// */
697
698// Float_t rsigma = TMath::Sqrt(rsigmay2*rsigmaz2);
699
700// Float_t ampc = 0; // normalization to the number of electrons
701// if (i>64){
702// // ampc = 1.*point->GetCPoint().GetMax();
703// ampc = 1.*cl->GetMax();
704// //ampc = 1.*point->GetCPoint().GetQ();
705// // AliTPCClusterPoint & p = point->GetCPoint();
706// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.6)) - TMath::Abs(p.GetY()/0.6)+0.5);
707// // Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
708// //Float_t dz =
709// // TMath::Abs( Int_t(iz) - iz + 0.5);
710// //ampc *= 1.15*(1-0.3*dy);
711// //ampc *= 1.15*(1-0.3*dz);
712// // Float_t zfactor = (AliTPCReconstructor::GetCtgRange()-0.0004*TMath::Abs(point->GetCPoint().GetZ()));
713// //ampc *=zfactor;
714// }
715// else{
716// //ampc = 1.0*point->GetCPoint().GetMax();
717// ampc = 1.0*cl->GetMax();
718// //ampc = 1.0*point->GetCPoint().GetQ();
719// //AliTPCClusterPoint & p = point->GetCPoint();
720// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.4)) - TMath::Abs(p.GetY()/0.4)+0.5);
721// //Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
722// //Float_t dz =
723// // TMath::Abs( Int_t(iz) - iz + 0.5);
724
725// //ampc *= 1.15*(1-0.3*dy);
726// //ampc *= 1.15*(1-0.3*dz);
727// // Float_t zfactor = (1.02-0.000*TMath::Abs(point->GetCPoint().GetZ()));
728// //ampc *=zfactor;
729
730// }
731// ampc *= 2.0; // put mean value to channel 50
732// //ampc *= 0.58; // put mean value to channel 50
733// Float_t w = 1.;
734// // if (type>0) w = 1./(type/2.-0.5);
735// // Float_t z = TMath::Abs(cl->GetZ());
736// if (i<64) {
737// ampc /= 0.6;
738// //ampc /= (1+0.0008*z);
739// } else
740// if (i>128){
741// ampc /=1.5;
742// //ampc /= (1+0.0008*z);
743// }else{
744// //ampc /= (1+0.0008*z);
745// }
81e97e0d 746
ba5e52fb 747// if (type<0) { //amp at the border - lower weight
748// // w*= 2.;
81e97e0d 749
ba5e52fb 750// continue;
751// }
752// if (rsigma>1.5) ampc/=1.3; // if big backround
753// amp[nc[of]] = ampc;
754// amp[nc[of]] /=gainGG;
755// angular[nc[of]] = TMath::Sqrt(1.+angley*angley+anglez*anglez);
756// weight[nc[of]] = w;
757// nc[of]++;
758// }
81e97e0d 759
ba5e52fb 760// TMath::Sort(nc[of],amp,index,kFALSE);
761// Float_t sumamp=0;
762// Float_t sumamp2=0;
763// Float_t sumw=0;
764// //meanlog = amp[index[Int_t(nc[of]*0.33)]];
765// meanlog = 50;
766// for (Int_t i=int(nc[of]*low+0.5);i<int(nc[of]*up+0.5);i++){
767// Float_t ampl = amp[index[i]]/angular[index[i]];
768// ampl = meanlog*TMath::Log(1.+ampl/meanlog);
769// //
770// sumw += weight[index[i]];
771// sumamp += weight[index[i]]*ampl;
772// sumamp2 += weight[index[i]]*ampl*ampl;
773// norm[of] += angular[index[i]]*weight[index[i]];
774// }
775// if (sumw<1){
776// SetdEdx(0);
777// }
778// else {
779// norm[of] /= sumw;
780// mean[of] = sumamp/sumw;
781// sigma[of] = sumamp2/sumw-mean[of]*mean[of];
782// if (sigma[of]>0.1)
783// sigma[of] = TMath::Sqrt(sigma[of]);
784// else
785// sigma[of] = 1000;
81e97e0d 786
ba5e52fb 787// mean[of] = (TMath::Exp(mean[of]/meanlog)-1)*meanlog;
788// //mean *=(1-0.02*(sigma/(mean*0.17)-1.));
789// //mean *=(1-0.1*(norm-1.));
790// }
791// }
792
793// Float_t dedx =0;
794// fSdEdx =0;
795// fMAngular =0;
796// // mean[0]*= (1-0.05*(sigma[0]/(0.01+mean[1]*0.18)-1));
797// // mean[1]*= (1-0.05*(sigma[1]/(0.01+mean[0]*0.18)-1));
81e97e0d 798
799
ba5e52fb 800// // dedx = (mean[0]* TMath::Sqrt((1.+nc[0]))+ mean[1]* TMath::Sqrt((1.+nc[1])) )/
801// // ( TMath::Sqrt((1.+nc[0]))+TMath::Sqrt((1.+nc[1])));
802
803// Int_t norm2 = 0;
804// Int_t norm3 = 0;
805// for (Int_t i =0;i<4;i++){
806// if (nc[i]>2&&nc[i]<1000){
807// dedx += mean[i] *nc[i];
808// fSdEdx += sigma[i]*(nc[i]-2);
809// fMAngular += norm[i] *nc[i];
810// norm2 += nc[i];
811// norm3 += nc[i]-2;
812// }
813// fDEDX[i] = mean[i];
814// fSDEDX[i] = sigma[i];
815// fNCDEDX[i]= nc[i];
816// }
817
818// if (norm3>0){
819// dedx /=norm2;
820// fSdEdx /=norm3;
821// fMAngular/=norm2;
822// }
823// else{
824// SetdEdx(0);
825// return 0;
826// }
827// // Float_t dedx1 =dedx;
828// /*
829// dedx =0;
830// for (Int_t i =0;i<4;i++){
831// if (nc[i]>2&&nc[i]<1000){
832// mean[i] = mean[i]*(1-0.12*(sigma[i]/(fSdEdx)-1.));
833// dedx += mean[i] *nc[i];
834// }
835// fDEDX[i] = mean[i];
836// }
837// dedx /= norm2;
838// */
81e97e0d 839
840
ba5e52fb 841// SetdEdx(dedx);
842// return dedx;
81e97e0d 843}
81e97e0d 844
845void AliTPCseed::CookPID()
846{
847 //
848 // cook PID information according dEdx
849 //
850 Double_t fRange = 10.;
851 Double_t fRes = 0.1;
852 Double_t fMIP = 47.;
853 //
854 Int_t ns=AliPID::kSPECIES;
855 Double_t sumr =0;
856 for (Int_t j=0; j<ns; j++) {
857 Double_t mass=AliPID::ParticleMass(j);
6c94f330 858 Double_t mom=GetP();
81e97e0d 859 Double_t dedx=fdEdx/fMIP;
5731b051 860 Double_t bethe=AliMathBase::BetheBlochAleph(mom/mass);
81e97e0d 861 Double_t sigma=fRes*bethe;
862 if (sigma>0.001){
863 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
864 fTPCr[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
865 sumr+=fTPCr[j];
866 continue;
867 }
868 fTPCr[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
869 sumr+=fTPCr[j];
870 }
871 else{
872 fTPCr[j]=1.;
873 sumr+=fTPCr[j];
874 }
875 }
876 for (Int_t j=0; j<ns; j++) {
877 fTPCr[j]/=sumr; //normalize
878 }
879}
880
6c94f330 881Double_t AliTPCseed::GetYat(Double_t xk) const {
882//-----------------------------------------------------------------
883// This function calculates the Y-coordinate of a track at the plane x=xk.
884//-----------------------------------------------------------------
885 if (TMath::Abs(GetSnp())>AliTPCReconstructor::GetMaxSnpTrack()) return 0.; //patch 01 jan 06
60e55aee 886 Double_t c1=GetSnp(), r1=TMath::Sqrt((1.-c1)*(1.+c1));
6c94f330 887 Double_t c2=c1+GetC()*(xk-GetX());
888 if (TMath::Abs(c2)>AliTPCReconstructor::GetMaxSnpTrack()) return 0;
60e55aee 889 Double_t r2=TMath::Sqrt((1.-c2)*(1.+c2));
6c94f330 890 return GetY() + (xk-GetX())*(c1+c2)/(r1+r2);
891}
892
0a65832b 893
894
8a92e133 895Float_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 896
897 //
898 // calculates dedx using the cluster
899 // low - up specify trunc mean range - default form 0-0.7
8076baa0 900 // type - 1 - max charge or 0- total charge in cluster
901 // //2- max no corr 3- total+ correction
0a65832b 902 // i1-i2 - the pad-row range used for calculation
ba5e52fb 903 // shapeNorm - kTRUE -taken from OCDB
904 //
905 // posNorm - usage of pos normalization
83afd539 906 // padNorm - pad type normalization
907 // returnVal - 0 return mean
908 // - 1 return RMS
909 // - 2 return number of clusters
910 //
0a65832b 911 // normalization parametrization taken from AliTPCClusterParam
912 //
ba5e52fb 913 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
914 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
915 if (!parcl) return 0;
916 if (!param) return 0;
83afd539 917 Int_t row0 = param->GetNRowLow();
918 Int_t row1 = row0+param->GetNRowUp1();
919
0a65832b 920 Float_t amp[160];
921 Int_t indexes[160];
922 Int_t ncl=0;
923 //
924 //
ba5e52fb 925 Float_t gainGG = 1; // gas gain factor -always enabled
926 Float_t gainPad = 1; // gain map - used always
83afd539 927 Float_t corrShape = 1; // correction due angular effect, diffusion and electron attachment
ba5e52fb 928 Float_t corrPos = 1; // local position correction - if posNorm enabled
929 Float_t corrPadType = 1; // pad type correction - if padNorm enabled
930 Float_t corrNorm = 1; // normalization factor - set Q to channel 50
931 //
932 //
933 //
4cc7ba77 934 if (AliTPCcalibDB::Instance()->GetParameters()){
ba5e52fb 935 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
4cc7ba77 936 }
937
0a65832b 938 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
4cc7ba77 939 const Float_t kedgey =3.;
0a65832b 940 //
7cd8ac3f 941 //
0a65832b 942 for (Int_t irow=i1; irow<i2; irow++){
943 AliTPCclusterMI* cluster = GetClusterPointer(irow);
944 if (!cluster) continue;
945 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
8076baa0 946 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
ba5e52fb 947 Int_t ipad= 0;
83afd539 948 if (irow>=row0) ipad=1;
949 if (irow>=row1) ipad=2;
ba5e52fb 950 //
951 //
952 //
953 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
954 if (gainMap) {
955 //
956 // Get gainPad - pad by pad calibration
957 //
d6920632 958 Float_t factor = 1;
959 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
83afd539 960 if (irow < row0) { // IROC
ba5e52fb 961 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
d6920632 962 } else { // OROC
83afd539 963 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
d6920632 964 }
ba5e52fb 965 if (factor>0.5) gainPad=factor;
7cd8ac3f 966 }
ba5e52fb 967 //
968 //do position and angular normalization
969 //
970 if (shapeNorm){
971 if (type<=1){
972 //
973 AliTPCTrackerPoint * point = GetTrackPoint(irow);
974 Float_t ty = TMath::Abs(point->GetAngleY());
83afd539 975 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
ba5e52fb 976
977 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
978 corrShape = parcl->Qnorm(ipad,type,dr,ty,tz);
979 }
0a65832b 980 }
ba5e52fb 981
8a92e133 982 if (posNorm>0){
8e1dcdda 983 //
ba5e52fb 984 // Do position normalization - relative distance to
985 // center of pad- time bin
986 // Work in progress
022a2383 987 // corrPos = parcl->QnormPos(ipad,type, cluster->GetPad(),
988 // cluster->GetTimeBin(), cluster->GetZ(),
989 // cluster->GetSigmaY2(),cluster->GetSigmaZ2(),
990 // cluster->GetMax(),cluster->GetQ());
8a92e133 991 // scaled response function
992 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
993 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
994 //
995
022a2383 996 AliTPCTrackerPoint * point = GetTrackPoint(irow);
997 Float_t ty = TMath::Abs(point->GetAngleY());
998 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
999
1000 if (type==1) corrPos =
1001 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1002 cluster->GetTimeBin(),ty,tz,yres0,zres0,0.4);
022a2383 1003 if (type==0) corrPos =
1004 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1005 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,0.4);
1006 if (posNorm==3){
1007 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
1008 Double_t signtgl = (cluster->GetZ()*point->GetAngleZ()>0)? 1:-1;
1009 Double_t p2 = TMath::Abs(TMath::Sin(TMath::ATan(ty)));
1010 Float_t corrHis = parcl->QnormHis(ipad,type,dr,p2,TMath::Abs(point->GetAngleZ())*signtgl);
1011 if (corrHis>0) corrPos*=corrHis;
1012 }
1013
8e1dcdda 1014 }
1015
ba5e52fb 1016 if (padNorm==1){
1017 //taken from OCDB
798017c7 1018 if (type==0 && parcl->QpadTnorm()) corrPadType = (*parcl->QpadTnorm())[ipad];
1019 if (type==1 && parcl->QpadMnorm()) corrPadType = (*parcl->QpadMnorm())[ipad];
022a2383 1020
2fc9608f 1021 }
ba5e52fb 1022 if (padNorm==2){
1023 corrPadType =param->GetPadPitchLength(cluster->GetDetector(),cluster->GetRow());
1024 //use hardwired - temp fix
1025 if (type==0) corrNorm=3.;
1026 if (type==1) corrNorm=1.;
1027 }
1028 //
1029 amp[ncl]=charge;
1030 amp[ncl]/=gainGG;
1031 amp[ncl]/=gainPad;
1032 amp[ncl]/=corrShape;
1033 amp[ncl]/=corrPadType;
1034 amp[ncl]/=corrPos;
1035 amp[ncl]/=corrNorm;
1036 //
0a65832b 1037 ncl++;
1038 }
8076baa0 1039
0a65832b 1040 if (type>3) return ncl;
1041 TMath::Sort(ncl,amp, indexes, kFALSE);
1042
8076baa0 1043 if (ncl<10) return 0;
0a65832b 1044
1045 Float_t suma=0;
83afd539 1046 Float_t suma2=0;
0a65832b 1047 Float_t sumn=0;
1048 Int_t icl0=TMath::Nint(ncl*low);
1049 Int_t icl1=TMath::Nint(ncl*up);
1050 for (Int_t icl=icl0; icl<icl1;icl++){
1051 suma+=amp[indexes[icl]];
83afd539 1052 suma2+=amp[indexes[icl]]*amp[indexes[icl]];
0a65832b 1053 sumn++;
1054 }
83afd539 1055 Float_t mean =suma/sumn;
1056 Float_t rms =TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
3af3fbc4 1057 //
1058 // do time-dependent correction for pressure and temperature variations
1059 UInt_t runNumber = 1;
1060 Float_t corrTimeGain = 1;
1061 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
e5e80ff9 1062 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
1063 if (trans && recoParam->GetUseGainCorrectionTime()>0) {
3af3fbc4 1064 runNumber = trans->GetCurrentRunNumber();
e5e80ff9 1065 //AliTPCcalibDB::Instance()->SetRun(runNumber);
a2c3785e 1066 TObjArray * timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
3af3fbc4 1067 if (timeGainSplines) {
1068 UInt_t time = trans->GetCurrentTimeStamp();
1069 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1070 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1071 if (fitMIP) {
108a67db 1072 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time);/*fitMIP->Eval(time);*/
3af3fbc4 1073 } else {
108a67db 1074 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time);/*fitFPcosmic->Eval(time);*/
3af3fbc4 1075 }
1076 }
1077 }
1078 mean /= corrTimeGain;
1079 rms /= corrTimeGain;
1080 //
83afd539 1081 if (returnVal==1) return rms;
8a92e133 1082 if (returnVal==2) return ncl;
1083 return mean;
1084}
1085
6feb400f 1086Float_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 1087
1088 //
1089 // calculates dedx using the cluster
1090 // low - up specify trunc mean range - default form 0-0.7
1091 // type - 1 - max charge or 0- total charge in cluster
1092 // //2- max no corr 3- total+ correction
1093 // i1-i2 - the pad-row range used for calculation
1094 //
1095 // posNorm - usage of pos normalization
6feb400f 1096 // returnVal - 0 return mean
1097 // - 1 return RMS
1098 // - 2 return number of clusters
1099 // - 3 ratio
1100 // - 4 mean upper half
1101 // - 5 mean - lower half
1102 // - 6 third moment
1103 // mode - 0 - linear
1104 // - 1 - logatithmic
2efc897f 1105 // rowThres - number of rows before and after given pad row to check for clusters below threshold
8a92e133 1106 //
1107 // normalization parametrization taken from AliTPCClusterParam
1108 //
1109 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
1110 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
1111 if (!parcl) return 0;
1112 if (!param) return 0;
1113 Int_t row0 = param->GetNRowLow();
1114 Int_t row1 = row0+param->GetNRowUp1();
1115
1116 Float_t amp[160];
1117 Int_t indexes[160];
1118 Int_t ncl=0;
2efc897f 1119 Int_t nclBelowThr = 0; // counts number of clusters below threshold
8a92e133 1120 //
1121 //
1122 Float_t gainGG = 1; // gas gain factor -always enabled
1123 Float_t gainPad = 1; // gain map - used always
1124 Float_t corrPos = 1; // local position correction - if posNorm enabled
8a92e133 1125 //
1126 //
1127 //
1128 if (AliTPCcalibDB::Instance()->GetParameters()){
1129 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
1130 }
649fcc43 1131 //
1132 // extract time-dependent correction for pressure and temperature variations
1133 //
1134 UInt_t runNumber = 1;
1135 Float_t corrTimeGain = 1;
1136 TObjArray * timeGainSplines = 0x0;
1137 TGraphErrors * grPadEqual = 0x0;
1138 //
1139 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
1140 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
6d64657a 1141 //
1142 if (recoParam->GetNeighborRowsDedx() == 0) rowThres = 0;
1143 //
649fcc43 1144 if (trans) {
2efc897f 1145 runNumber = trans->GetCurrentRunNumber();
1146 //AliTPCcalibDB::Instance()->SetRun(runNumber);
1147 timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
1148 if (timeGainSplines && recoParam->GetUseGainCorrectionTime()>0) {
1149 UInt_t time = trans->GetCurrentTimeStamp();
1150 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1151 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1152 if (fitMIP) {
1153 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time); /*fitMIP->Eval(time);*/
649fcc43 1154 } else {
2efc897f 1155 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time); /*fitFPcosmic->Eval(time); */
1156 }
649fcc43 1157 //
1158 if (type==1) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQMAX_PADREGIONGAIN_BEAM_ALL");
1159 if (type==0) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQTOT_PADREGIONGAIN_BEAM_ALL");
2efc897f 1160 }
649fcc43 1161 }
2efc897f 1162
1163 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
8a92e133 1164 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1165 const Float_t kedgey =3.;
1166 //
1167 //
1168 for (Int_t irow=i1; irow<i2; irow++){
1169 AliTPCclusterMI* cluster = GetClusterPointer(irow);
736a5826 1170 if (!cluster && irow > 1 && irow < 157) {
2efc897f 1171 Bool_t isClBefore = kFALSE;
1172 Bool_t isClAfter = kFALSE;
1173 for(Int_t ithres = 1; ithres <= rowThres; ithres++) {
1174 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1175 if (clusterBefore) isClBefore = kTRUE;
1176 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1177 if (clusterAfter) isClAfter = kTRUE;
1178 }
1179 if (isClBefore && isClAfter) nclBelowThr++;
2efc897f 1180 }
736a5826 1181 if (!cluster) continue;
2efc897f 1182 //
1183 //
8a92e133 1184 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
2efc897f 1185 //
1186 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1187 if (point==0) continue;
1188 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1189 if (rsigmay > kClusterShapeCut) continue;
1190 //
1191 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1192 //
8a92e133 1193 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
1194 Int_t ipad= 0;
1195 if (irow>=row0) ipad=1;
1196 if (irow>=row1) ipad=2;
1197 //
1198 //
1199 //
1200 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1201 if (gainMap) {
1202 //
1203 // Get gainPad - pad by pad calibration
1204 //
1205 Float_t factor = 1;
1206 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
1207 if (irow < row0) { // IROC
1208 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
1209 } else { // OROC
1210 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
1211 }
2efc897f 1212 if (factor>0.3) gainPad=factor;
8a92e133 1213 }
8a92e133 1214 //
1215 // Do position normalization - relative distance to
1216 // center of pad- time bin
1217
8a92e133 1218 Float_t ty = TMath::Abs(point->GetAngleY());
1219 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1220 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1221 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1222
1223 yres0 *=parcl->GetQnormCorr(ipad, type,0);
1224 zres0 *=parcl->GetQnormCorr(ipad, type,1);
1225 Float_t effLength=parcl->GetQnormCorr(ipad, type,4)*0.5;
1226 Float_t effDiff =(parcl->GetQnormCorr(ipad, type,2)+parcl->GetQnormCorr(ipad, type,3))*0.5;
1227 //
1228 if (type==1) {
1229 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1230 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1231 cluster->GetTimeBin(),ty,tz,yres0,zres0,effLength,effDiff);
1232 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1233 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1234 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1235 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1236 //
1237 }
1238 if (type==0) {
1239 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1240 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1241 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,effLength,effDiff);
1242
1243 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1244 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1245 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1246 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1247 //
1248 }
2efc897f 1249 //
1250 // pad region equalization outside of cluster param
1251 //
1252 Float_t gainEqualPadRegion = 1;
649fcc43 1253 if (grPadEqual) gainEqualPadRegion = grPadEqual->Eval(ipad);
8a92e133 1254 //
1255 amp[ncl]=charge;
1256 amp[ncl]/=gainGG;
1257 amp[ncl]/=gainPad;
1258 amp[ncl]/=corrPos;
2efc897f 1259 amp[ncl]/=gainEqualPadRegion;
8a92e133 1260 //
1261 ncl++;
1262 }
1263
6feb400f 1264 if (type==2) return ncl;
8a92e133 1265 TMath::Sort(ncl,amp, indexes, kFALSE);
2efc897f 1266 //
8a92e133 1267 if (ncl<10) return 0;
2efc897f 1268 //
1269 Double_t * ampWithBelow = new Double_t[ncl + nclBelowThr];
1270 for(Int_t iCl = 0; iCl < ncl + nclBelowThr; iCl++) {
1271 if (iCl < nclBelowThr) {
1272 ampWithBelow[iCl] = amp[indexes[0]];
1273 } else {
1274 ampWithBelow[iCl] = amp[indexes[iCl - nclBelowThr]];
1275 }
1276 }
1277 //printf("DEBUG: %i shit %f", nclBelowThr, amp[indexes[0]]);
1278 //
8a92e133 1279 Float_t suma=0;
1280 Float_t suma2=0;
6feb400f 1281 Float_t suma3=0;
1282 Float_t sumaS=0;
8a92e133 1283 Float_t sumn=0;
6feb400f 1284 // upper,and lower part statistic
1285 Float_t sumL=0, sumL2=0, sumLN=0;
1286 Float_t sumD=0, sumD2=0, sumDN=0;
1287
2efc897f 1288 Int_t icl0=TMath::Nint((ncl + nclBelowThr)*low);
1289 Int_t icl1=TMath::Nint((ncl + nclBelowThr)*up);
6feb400f 1290 Int_t iclm=TMath::Nint((ncl + nclBelowThr)*(low +(up+low)*0.5));
1291 //
8a92e133 1292 for (Int_t icl=icl0; icl<icl1;icl++){
6feb400f 1293 if (ampWithBelow[icl]<0.1) continue;
504dd8df 1294 Double_t camp=ampWithBelow[icl]/corrTimeGain;
1295 if (mode==1) camp= TMath::Log(camp);
6feb400f 1296 if (icl<icl1){
504dd8df 1297 suma+=camp;
1298 suma2+=camp*camp;
1299 suma3+=camp*camp*camp;
1300 sumaS+=TMath::Power(TMath::Abs(camp),1./3.);
6feb400f 1301 sumn++;
1302 }
1303 if (icl>iclm){
504dd8df 1304 sumL+=camp;
1305 sumL2+=camp*camp;
6feb400f 1306 sumLN++;
1307 }
1308 if (icl<=iclm){
504dd8df 1309 sumD+=camp;
1310 sumD2+=camp*camp;
6feb400f 1311 sumDN++;
1312 }
8a92e133 1313 }
0f7547f1 1314 //
1315 Float_t mean = 0;
1316 Float_t meanL = 0;
1317 Float_t meanD = 0; // lower half mean
1318 if (sumn > 1e-30) mean =suma/sumn;
1319 if (sumLN > 1e-30) meanL =sumL/sumLN;
1320 if (sumDN > 1e-30) meanD =(sumD/sumDN);
1321 /*
8a92e133 1322 Float_t mean =suma/sumn;
6feb400f 1323 Float_t meanL = sumL/sumLN;
1324 Float_t meanD =(sumD/sumDN); // lower half mean
0f7547f1 1325 */
28273e26 1326
1327 Float_t rms = 0;
1328 Float_t mean2=0;
1329 Float_t mean3=0;
1330 Float_t meanS=0;
1331
1332 if(sumn>0){
1333 rms = TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
1334 mean2=suma2/sumn;
1335 mean3=suma3/sumn;
1336 meanS=sumaS/sumn;
1337 }
1338
6feb400f 1339 if (mean2>0) mean2=TMath::Power(TMath::Abs(mean2),1./2.);
1340 if (mean3>0) mean3=TMath::Power(TMath::Abs(mean3),1./3.);
1341 if (meanS>0) meanS=TMath::Power(TMath::Abs(meanS),3.);
3af3fbc4 1342 //
6feb400f 1343 if (mode==1) mean=TMath::Exp(mean);
1344 if (mode==1) meanL=TMath::Exp(meanL); // upper truncation
1345 if (mode==1) meanD=TMath::Exp(meanD); // lower truncation
1346 //
1347 delete [] ampWithBelow;
1348
1349
3af3fbc4 1350 //
8a92e133 1351 if (returnVal==1) return rms;
83afd539 1352 if (returnVal==2) return ncl;
6feb400f 1353 if (returnVal==3) return Double_t(nclBelowThr)/Double_t(nclBelowThr+ncl);
1354 if (returnVal==4) return meanL;
1355 if (returnVal==5) return meanD;
1356 if (returnVal==6) return mean2;
1357 if (returnVal==7) return mean3;
1358 if (returnVal==8) return meanS;
83afd539 1359 return mean;
0a65832b 1360}
1361
83afd539 1362
0a65832b 1363
1364
eb02f63a 1365Float_t AliTPCseed::CookShape(Int_t type){
1366 //
1367 //
1368 //
1369 //-----------------------------------------------------------------
1370 // This funtion calculates dE/dX within the "low" and "up" cuts.
1371 //-----------------------------------------------------------------
1372 Float_t means=0;
1373 Float_t meanc=0;
1374 for (Int_t i =0; i<160;i++) {
1375 AliTPCTrackerPoint * point = GetTrackPoint(i);
1376 if (point==0) continue;
1377
1378 AliTPCclusterMI * cl = fClusterPointer[i];
1379 if (cl==0) continue;
1380
1381 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1382 Float_t rsigmaz = TMath::Sqrt(point->GetSigmaZ());
1383 Float_t rsigma = (rsigmay+rsigmaz)*0.5;
1384 if (type==0) means+=rsigma;
1385 if (type==1) means+=rsigmay;
1386 if (type==2) means+=rsigmaz;
1387 meanc++;
1388 }
1389 Float_t mean = (meanc>0)? means/meanc:0;
1390 return mean;
1391}
87e92a27 1392
1393
1394
1395Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
1396 //
1397 // Refit the track
1398 // return value - number of used clusters
1399 //
1400 //
1401 const Int_t kMinNcl =10;
1402 AliTPCseed *track=new AliTPCseed(*seed);
1403 Int_t sector=-1;
1404 // reset covariance
1405 //
1406 Double_t covar[15];
1407 for (Int_t i=0;i<15;i++) covar[i]=0;
1408 covar[0]=10.*10.;
1409 covar[2]=10.*10.;
1410 covar[5]=10.*10./(64.*64.);
1411 covar[9]=10.*10./(64.*64.);
1412 covar[14]=1*1;
1413 //
1414
1415 Float_t xmin=1000, xmax=-10000;
1416 Int_t imin=158, imax=0;
1417 for (Int_t i=0;i<160;i++) {
1418 AliTPCclusterMI *c=track->GetClusterPointer(i);
1419 if (!c) continue;
1420 if (sector<0) sector = c->GetDetector();
1421 if (c->GetX()<xmin) xmin=c->GetX();
1422 if (c->GetX()>xmax) xmax=c->GetX();
1423 if (i<imin) imin=i;
1424 if (i>imax) imax=i;
1425 }
1426 if(imax-imin<kMinNcl) {
1427 delete track;
1428 return 0 ;
1429 }
1430 // Not succes to rotate
1431 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1432 delete track;
1433 return 0;
1434 }
1435 //
1436 //
1437 // fit from inner to outer row
1438 //
1439 AliExternalTrackParam paramIn;
1440 AliExternalTrackParam paramOut;
1441 Bool_t isOK=kTRUE;
be34cb88 1442 Int_t ncl=0;
87e92a27 1443 //
1444 //
1445 //
1446 for (Int_t i=imin; i<=imax; i++){
1447 AliTPCclusterMI *c=track->GetClusterPointer(i);
1448 if (!c) continue;
1449 // if (RejectCluster(c,track)) continue;
be34cb88 1450 sector = (c->GetDetector()%18);
1451 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1452 //continue;
1453 }
87e92a27 1454 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1455 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1456 if (!track->PropagateTo(r[0])) {
1457 isOK=kFALSE;
87e92a27 1458 }
1459 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1460 }
1461 if (!isOK) { delete track; return 0;}
1462 track->AddCovariance(covar);
1463 //
1464 //
1465 //
1466 for (Int_t i=imax; i>=imin; i--){
1467 AliTPCclusterMI *c=track->GetClusterPointer(i);
1468 if (!c) continue;
1469 //if (RejectCluster(c,track)) continue;
be34cb88 1470 sector = (c->GetDetector()%18);
1471 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1472 //continue;
1473 }
87e92a27 1474 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1475 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1476 if (!track->PropagateTo(r[0])) {
1477 isOK=kFALSE;
87e92a27 1478 }
1479 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1480 }
be34cb88 1481 //if (!isOK) { delete track; return 0;}
87e92a27 1482 paramIn = *track;
1483 track->AddCovariance(covar);
1484 //
1485 //
1486 for (Int_t i=imin; i<=imax; i++){
1487 AliTPCclusterMI *c=track->GetClusterPointer(i);
1488 if (!c) continue;
be34cb88 1489 sector = (c->GetDetector()%18);
1490 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1491 //continue;
1492 }
1493 ncl++;
87e92a27 1494 //if (RejectCluster(c,track)) continue;
1495 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1496 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1497 if (!track->PropagateTo(r[0])) {
1498 isOK=kFALSE;
87e92a27 1499 }
1500 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1501 }
be34cb88 1502 //if (!isOK) { delete track; return 0;}
87e92a27 1503 paramOut=*track;
87e92a27 1504 //
1505 //
1506 //
1507 if (parin) (*parin)=paramIn;
1508 if (parout) (*parout)=paramOut;
6e23caff 1509 delete track;
be34cb88 1510 return ncl;
87e92a27 1511}
1512
1513
1514
1515Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
1516 //
1517 //
1518 //
1519 return kFALSE;
1520}
3247d397 1521
1522
1523
1524
1525
1526
1527void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1528 Double_t& erry, Double_t &errz)
1529{
1530 //
1531 // Get cluster error at given position
1532 //
1533 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1534 Double_t tany,tanz;
1535 Double_t snp1=param->GetSnp();
60e55aee 1536 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1537 //
1538 Double_t tgl1=param->GetTgl();
60e55aee 1539 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1540 //
1541 Int_t padSize = 0; // short pads
1542 if (cluster->GetDetector() >= 36) {
1543 padSize = 1; // medium pads
1544 if (cluster->GetRow() > 63) padSize = 2; // long pads
1545 }
1546
1547 erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
1548 errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
1549}
1550
1551
1552void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1553 Double_t& rmsy, Double_t &rmsz)
1554{
1555 //
1556 // Get cluster error at given position
1557 //
1558 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1559 Double_t tany,tanz;
1560 Double_t snp1=param->GetSnp();
60e55aee 1561 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1562 //
1563 Double_t tgl1=param->GetTgl();
60e55aee 1564 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1565 //
1566 Int_t padSize = 0; // short pads
1567 if (cluster->GetDetector() >= 36) {
1568 padSize = 1; // medium pads
1569 if (cluster->GetRow() > 63) padSize = 2; // long pads
1570 }
1571
1572 rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
1573 rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
1574}
ba5e52fb 1575
1576
1577
1578Double_t AliTPCseed::GetQCorrGeom(Float_t ty, Float_t tz){
1579 //Geoetrical
1580 //ty - tangent in local y direction
1581 //tz - tangent
1582 //
1583 Float_t norm=TMath::Sqrt(1+ty*ty+tz*tz);
1584 return norm;
1585}
1586
83afd539 1587Double_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 1588 //
1589 // Q normalization
1590 //
1591 // return value = Q Normalization factor
1592 // Normalization - 1 - shape factor part for full drift
1593 // 1 - electron attachment for 0 drift
1594
1595 // Input parameters:
1596 //
1597 // ipad - 0 short pad
1598 // 1 medium pad
1599 // 2 long pad
1600 //
1601 // type - 0 qmax
1602 // - 1 qtot
1603 //
1604 //z - z position (-250,250 cm)
1605 //ty - tangent in local y direction
1606 //tz - tangent
1607 //
1608
1609 AliTPCClusterParam * paramCl = AliTPCcalibDB::Instance()->GetClusterParam();
1610 AliTPCParam * paramTPC = AliTPCcalibDB::Instance()->GetParameters();
1611
1612 if (!paramCl) return 1;
1613 //
1614 Double_t dr = 250.-TMath::Abs(z);
1615 Double_t sy = paramCl->GetRMS0( 0,ipad, dr, TMath::Abs(ty));
1616 Double_t sy0= paramCl->GetRMS0(0,ipad, 250, 0);
1617 Double_t sz = paramCl->GetRMS0( 1,ipad, dr, TMath::Abs(tz));
1618 Double_t sz0= paramCl->GetRMS0(1,ipad, 250, 0);
1619
1620 Double_t sfactorMax = TMath::Sqrt(sy0*sz0/(sy*sz));
1621
1622
1623 Double_t dt = 1000000*(dr/paramTPC->GetDriftV()); //time in microsecond
1624 Double_t attProb = TMath::Exp(-paramTPC->GetAttCoef()*paramTPC->GetOxyCont()*dt);
1625 //
1626 //
1627 if (type==0) return sfactorMax*attProb;
1628
1629 return attProb;
1630
1631
1632}
1633
64bf5ca0 1634
1635//_______________________________________________________________________
1636Float_t AliTPCseed::GetTPCClustInfo(Int_t nNeighbours, Int_t type, Int_t row0, Int_t row1)
1637{
1638 //
1639 // TPC cluster information
1640 // type 0: get fraction of found/findable clusters with neighbourhood definition
1641 // 1: found clusters
1642 // 2: findable (number of clusters above and below threshold)
1643 //
1644 // definition of findable clusters:
1645 // a cluster is defined as findable if there is another cluster
1646 // within +- nNeighbours pad rows. The idea is to overcome threshold
1647 // effects with a very simple algorithm.
1648 //
1649
1650 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
1651 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1652 const Float_t kedgey =3.;
1653
1654 Float_t ncl = 0;
1655 Float_t nclBelowThr = 0; // counts number of clusters below threshold
1656
1657 for (Int_t irow=row0; irow<row1; irow++){
1658 AliTPCclusterMI* cluster = GetClusterPointer(irow);
1659
1660 if (!cluster && irow > 1 && irow < 157) {
1661 Bool_t isClBefore = kFALSE;
1662 Bool_t isClAfter = kFALSE;
1663 for(Int_t ithres = 1; ithres <= nNeighbours; ithres++) {
1664 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1665 if (clusterBefore) isClBefore = kTRUE;
1666 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1667 if (clusterAfter) isClAfter = kTRUE;
1668 }
1669 if (isClBefore && isClAfter) nclBelowThr++;
1670 }
1671 if (!cluster) continue;
1672 //
1673 //
1674 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
1675 //
1676 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1677 if (point==0) continue;
1678 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1679 if (rsigmay > kClusterShapeCut) continue;
1680 //
1681 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1682 ncl++;
1683 }
1684
1685 if(ncl<10)
1686 return 0;
1687 if(type==0)
1688 if(nclBelowThr+ncl>0)
1689 return ncl/(nclBelowThr+ncl);
1690 if(type==1)
1691 return ncl;
1692 if(type==2)
1693 return ncl+nclBelowThr;
1694 return 0;
1695}
f06a1ff6 1696
1697//_______________________________________________________________________
1698void AliTPCseed::Clear(Option_t*)
1699{
1700 // formally seed may allocate memory for clusters (althought this should not happen for
1701 // the seeds in the pool). Hence we need this method for fwd. compatibility
1702 if (fClusterOwner) for (int i=160;i--;) {delete fClusterPointer[i]; fClusterPointer[i] = 0;}
e546b023 1703 AliTPCtrack::Clear();
f06a1ff6 1704}