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Fix of coverity warning (sent by email, but not seen in the coverity-webpage and...
[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),
bad6eb00 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),
bad6eb00 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),
bad6eb00 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),
bad6eb00 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;
263 for(Int_t i = 0;i<160;++i)fClusterPointer[i] = param.fClusterPointer[i]; // this is not allocated by AliTPCSeed
264 fClusterOwner = param.fClusterOwner;
265 // leave out fPoint, they are also not copied in the copy ctor...
266 // but deleted in the dtor... strange...
316c6cd9 267 fRow = param.fRow;
268 fSector = param.fSector;
269 fRelativeSector = param.fRelativeSector;
270 fCurrentSigmaY2 = param.fCurrentSigmaY2;
271 fCurrentSigmaZ2 = param.fCurrentSigmaZ2;
272 fErrorY2 = param.fErrorY2;
273 fErrorZ2 = param.fErrorZ2;
274 fCurrentCluster = param.fCurrentCluster; // this is not allocated by AliTPCSeed
275 fCurrentClusterIndex1 = param.fCurrentClusterIndex1;
276 fInDead = param.fInDead;
277 fIsSeeding = param.fIsSeeding;
278 fNoCluster = param.fNoCluster;
279 fSort = param.fSort;
280 fBSigned = param.fBSigned;
281 for(Int_t i = 0;i<4;++i){
282 fDEDX[i] = param.fDEDX[i];
283 fSDEDX[i] = param.fSDEDX[i];
284 fNCDEDX[i] = param.fNCDEDX[i];
9c0db267 285 fNCDEDXInclThres[i] = param.fNCDEDXInclThres[i];
316c6cd9 286 }
9c0db267 287 fDEDX[4] = param.fDEDX[4];
316c6cd9 288 for(Int_t i = 0;i<AliPID::kSPECIES;++i)fTPCr[i] = param.fTPCr[i];
289
290 fSeedType = param.fSeedType;
291 fSeed1 = param.fSeed1;
292 fSeed2 = param.fSeed2;
293 for(Int_t i = 0;i<12;++i)fOverlapLabels[i] = param.fOverlapLabels[i];
294 fMAngular = param.fMAngular;
295 fCircular = param.fCircular;
296 for(int i = 0;i<160;++i)fTrackPoints[i] = param.fTrackPoints[i];
316c6cd9 297 }
179c6296 298 return (*this);
299}
300//____________________________________________________
81e97e0d 301AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
302{
303 //
304 //
305 return &fTrackPoints[i];
306}
307
81e97e0d 308
309
310Double_t AliTPCseed::GetDensityFirst(Int_t n)
311{
312 //
313 //
314 // return cluster for n rows bellow first point
315 Int_t nfoundable = 1;
316 Int_t nfound = 1;
317 for (Int_t i=fLastPoint-1;i>0&&nfoundable<n; i--){
318 Int_t index = GetClusterIndex2(i);
319 if (index!=-1) nfoundable++;
320 if (index>0) nfound++;
321 }
322 if (nfoundable<n) return 0;
323 return Double_t(nfound)/Double_t(nfoundable);
324
325}
326
327
328void AliTPCseed::GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2)
329{
330 // get cluster stat. on given region
331 //
332 found = 0;
333 foundable = 0;
334 shared =0;
335 for (Int_t i=first;i<last; i++){
336 Int_t index = GetClusterIndex2(i);
337 if (index!=-1) foundable++;
6d493ea0 338 if (index&0x8000) continue;
81e97e0d 339 if (fClusterPointer[i]) {
340 found++;
341 }
342 else
343 continue;
344
345 if (fClusterPointer[i]->IsUsed(10)) {
346 shared++;
347 continue;
348 }
349 if (!plus2) continue; //take also neighborhoud
350 //
351 if ( (i>0) && fClusterPointer[i-1]){
352 if (fClusterPointer[i-1]->IsUsed(10)) {
353 shared++;
354 continue;
355 }
356 }
357 if ( fClusterPointer[i+1]){
358 if (fClusterPointer[i+1]->IsUsed(10)) {
359 shared++;
360 continue;
361 }
362 }
363
364 }
365 //if (shared>found){
366 //Error("AliTPCseed::GetClusterStatistic","problem\n");
367 //}
368}
369
370
371
372
373
374void AliTPCseed::Reset(Bool_t all)
375{
376 //
377 //
378 SetNumberOfClusters(0);
379 fNFoundable = 0;
380 SetChi2(0);
6c94f330 381 ResetCovariance(10.);
81e97e0d 382 /*
383 if (fTrackPoints){
384 for (Int_t i=0;i<8;i++){
385 delete [] fTrackPoints[i];
386 }
387 delete fTrackPoints;
388 fTrackPoints =0;
389 }
390 */
391
392 if (all){
393 for (Int_t i=0;i<200;i++) SetClusterIndex2(i,-3);
394 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
395 }
396
397}
398
399
400void AliTPCseed::Modify(Double_t factor)
401{
402
403 //------------------------------------------------------------------
404 //This function makes a track forget its history :)
405 //------------------------------------------------------------------
406 if (factor<=0) {
6c94f330 407 ResetCovariance(10.);
81e97e0d 408 return;
409 }
6c94f330 410 ResetCovariance(factor);
411
81e97e0d 412 SetNumberOfClusters(0);
413 fNFoundable =0;
414 SetChi2(0);
415 fRemoval = 0;
416 fCurrentSigmaY2 = 0.000005;
417 fCurrentSigmaZ2 = 0.000005;
418 fNoCluster = 0;
419 //fFirstPoint = 160;
420 //fLastPoint = 0;
421}
422
423
424
425
426Int_t AliTPCseed::GetProlongation(Double_t xk, Double_t &y, Double_t & z) const
427{
428 //-----------------------------------------------------------------
429 // This function find proloncation of a track to a reference plane x=xk.
430 // doesn't change internal state of the track
431 //-----------------------------------------------------------------
432
6c94f330 433 Double_t x1=GetX(), x2=x1+(xk-x1), dx=x2-x1;
81e97e0d 434
6c94f330 435 if (TMath::Abs(GetSnp()+GetC()*dx) >= AliTPCReconstructor::GetMaxSnpTrack()) {
81e97e0d 436 return 0;
437 }
438
439 // Double_t y1=fP0, z1=fP1;
60e55aee 440 Double_t c1=GetSnp(), r1=sqrt((1.-c1)*(1.+c1));
441 Double_t c2=c1 + GetC()*dx, r2=sqrt((1.-c2)*(1.+c2));
81e97e0d 442
6c94f330 443 y = GetY();
444 z = GetZ();
81e97e0d 445 //y += dx*(c1+c2)/(r1+r2);
446 //z += dx*(c1+c2)/(c1*r2 + c2*r1)*fP3;
447
448 Double_t dy = dx*(c1+c2)/(r1+r2);
449 Double_t dz = 0;
450 //
6c94f330 451 Double_t delta = GetC()*dx*(c1+c2)/(c1*r2 + c2*r1);
81e97e0d 452 /*
453 if (TMath::Abs(delta)>0.0001){
454 dz = fP3*TMath::ASin(delta)/fP4;
455 }else{
456 dz = dx*fP3*(c1+c2)/(c1*r2 + c2*r1);
457 }
458 */
459 // dz = fP3*AliTPCFastMath::FastAsin(delta)/fP4;
6c94f330 460 dz = GetTgl()*TMath::ASin(delta)/GetC();
81e97e0d 461 //
462 y+=dy;
463 z+=dz;
464
465
466 return 1;
467}
468
469
470//_____________________________________________________________________________
af32720d 471Double_t AliTPCseed::GetPredictedChi2(const AliCluster *c) const
81e97e0d 472{
473 //-----------------------------------------------------------------
474 // This function calculates a predicted chi2 increment.
475 //-----------------------------------------------------------------
6c94f330 476 Double_t p[2]={c->GetY(), c->GetZ()};
477 Double_t cov[3]={fErrorY2, 0., fErrorZ2};
9c7b8249 478
479 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
480 if (TMath::Abs(dx)>0){
481 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
482 Float_t dy = dx*ty;
483 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
484 p[0] = c->GetY()-dy;
485 p[1] = c->GetZ()-dz;
486 }
6c94f330 487 return AliExternalTrackParam::GetPredictedChi2(p,cov);
81e97e0d 488}
489
81e97e0d 490//_________________________________________________________________________________________
491
492
493Int_t AliTPCseed::Compare(const TObject *o) const {
494 //-----------------------------------------------------------------
495 // This function compares tracks according to the sector - for given sector according z
496 //-----------------------------------------------------------------
497 AliTPCseed *t=(AliTPCseed*)o;
6c94f330 498
81e97e0d 499 if (fSort == 0){
500 if (t->fRelativeSector>fRelativeSector) return -1;
501 if (t->fRelativeSector<fRelativeSector) return 1;
502 Double_t z2 = t->GetZ();
503 Double_t z1 = GetZ();
504 if (z2>z1) return 1;
505 if (z2<z1) return -1;
506 return 0;
507 }
508 else {
509 Float_t f2 =1;
6c23ffed 510 f2 = 1-20*TMath::Sqrt(t->GetSigma1Pt2())/(t->OneOverPt()+0.0066);
81e97e0d 511 if (t->fBConstrain) f2=1.2;
512
513 Float_t f1 =1;
6c23ffed 514 f1 = 1-20*TMath::Sqrt(GetSigma1Pt2())/(OneOverPt()+0.0066);
81e97e0d 515
516 if (fBConstrain) f1=1.2;
517
518 if (t->GetNumberOfClusters()*f2 <GetNumberOfClusters()*f1) return -1;
519 else return +1;
520 }
521}
522
523
524
525
526//_____________________________________________________________________________
70e20dcf 527Bool_t AliTPCseed::Update(const AliCluster *c, Double_t chisq, Int_t index)
6c94f330 528{
81e97e0d 529 //-----------------------------------------------------------------
530 // This function associates a cluster with this track.
531 //-----------------------------------------------------------------
81e97e0d 532 Int_t n=GetNumberOfClusters();
70e20dcf 533 Int_t idx=GetClusterIndex(n); // save the current cluster index
534
535 AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
ca521f6c 536 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
537 if (TMath::Abs(dx)>0){
538 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
539 Float_t dy = dx*ty;
540 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
541 cl.SetY(c->GetY()-dy);
542 cl.SetZ(c->GetZ()-dz);
543 }
544
70e20dcf 545 if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
e0e13b88 546
547 if (fCMeanSigmaY2p30<0){
548 fCMeanSigmaY2p30= c->GetSigmaY2(); //! current mean sigma Y2 - mean30%
c07cb486 549 fCMeanSigmaZ2p30= c->GetSigmaZ2(); //! current mean sigma Z2 - mean30%
550 fCMeanSigmaY2p30R = 1; //! current mean sigma Y2 - mean5%
551 fCMeanSigmaZ2p30R = 1; //! current mean sigma Z2 - mean5%
e0e13b88 552 }
553 //
554 fCMeanSigmaY2p30= 0.70*fCMeanSigmaY2p30 +0.30*c->GetSigmaY2();
c07cb486 555 fCMeanSigmaZ2p30= 0.70*fCMeanSigmaZ2p30 +0.30*c->GetSigmaZ2();
556 if (fCurrentSigmaY2>0){
557 fCMeanSigmaY2p30R = 0.7*fCMeanSigmaY2p30R +0.3*c->GetSigmaY2()/fCurrentSigmaY2;
558 fCMeanSigmaZ2p30R = 0.7*fCMeanSigmaZ2p30R +0.3*c->GetSigmaZ2()/fCurrentSigmaZ2;
559 }
e0e13b88 560
81e97e0d 561
70e20dcf 562 SetClusterIndex(n,idx); // restore the current cluster index
6c94f330 563 return kTRUE;
81e97e0d 564}
565
566
567
568//_____________________________________________________________________________
dc5cd41c 569Float_t AliTPCseed::CookdEdx(Double_t low, Double_t up,Int_t i1, Int_t i2, Bool_t /* onlyused */) {
81e97e0d 570 //-----------------------------------------------------------------
571 // This funtion calculates dE/dX within the "low" and "up" cuts.
572 //-----------------------------------------------------------------
2cadb5d1 573 // CookdEdxAnalytical(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Int_t returnVal)
83afd539 574 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
44a6a09e 575
83afd539 576 Int_t row0 = param->GetNRowLow();
577 Int_t row1 = row0+param->GetNRowUp1();
578 Int_t row2 = row1+param->GetNRowUp2();
44a6a09e 579 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
580 Int_t useTot = 0;
581 if (recoParam) useTot = (recoParam->GetUseTotCharge())? 0:1;
83afd539 582 //
583 //
584 //
2cadb5d1 585 fDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 0);
586 fDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 0);
587 fDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 0);
588 fDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 0);
64bf5ca0 589 fDEDX[4] = CookdEdxAnalytical(low,up,useTot ,row0,row2, 0); // full OROC truncated mean
83afd539 590 //
2cadb5d1 591 fSDEDX[0] = CookdEdxAnalytical(low,up,useTot ,i1 ,i2, 1);
592 fSDEDX[1] = CookdEdxAnalytical(low,up,useTot ,0 ,row0, 1);
593 fSDEDX[2] = CookdEdxAnalytical(low,up,useTot ,row0,row1, 1);
594 fSDEDX[3] = CookdEdxAnalytical(low,up,useTot ,row1,row2, 1);
83afd539 595 //
64bf5ca0 596 fNCDEDX[0] = TMath::Nint(GetTPCClustInfo(2, 1, i1 , i2));
597 fNCDEDX[1] = TMath::Nint(GetTPCClustInfo(2, 1, 0 , row0));
598 fNCDEDX[2] = TMath::Nint(GetTPCClustInfo(2, 1, row0, row1));
599 fNCDEDX[3] = TMath::Nint(GetTPCClustInfo(2, 1, row1, row2));
600 //
601 fNCDEDXInclThres[0] = TMath::Nint(GetTPCClustInfo(2, 2, i1 , i2));
602 fNCDEDXInclThres[1] = TMath::Nint(GetTPCClustInfo(2, 2, 0 , row0));
603 fNCDEDXInclThres[2] = TMath::Nint(GetTPCClustInfo(2, 2, row0, row1));
604 fNCDEDXInclThres[3] = TMath::Nint(GetTPCClustInfo(2, 2, row1, row2));
605 //
83afd539 606 SetdEdx(fDEDX[0]);
607 return fDEDX[0];
81e97e0d 608
ba5e52fb 609// return CookdEdxNorm(low,up,0,i1,i2,1,0,2);
4cc7ba77 610
611
ba5e52fb 612// Float_t amp[200];
613// Float_t angular[200];
614// Float_t weight[200];
615// Int_t index[200];
616// //Int_t nc = 0;
617// Float_t meanlog = 100.;
618
619// Float_t mean[4] = {0,0,0,0};
620// Float_t sigma[4] = {1000,1000,1000,1000};
621// Int_t nc[4] = {0,0,0,0};
622// Float_t norm[4] = {1000,1000,1000,1000};
623// //
624// //
625// fNShared =0;
626
627// Float_t gainGG = 1;
628// if (AliTPCcalibDB::Instance()->GetParameters()){
629// gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000.; //relative gas gain
630// }
631
632
633// for (Int_t of =0; of<4; of++){
634// for (Int_t i=of+i1;i<i2;i+=4)
635// {
636// Int_t clindex = fIndex[i];
637// if (clindex<0||clindex&0x8000) continue;
638
639// //AliTPCTrackPoint * point = (AliTPCTrackPoint *) arr.At(i);
640// AliTPCTrackerPoint * point = GetTrackPoint(i);
641// //AliTPCTrackerPoint * pointm = GetTrackPoint(i-1);
642// //AliTPCTrackerPoint * pointp = 0;
643// //if (i<159) pointp = GetTrackPoint(i+1);
644
645// if (point==0) continue;
646// AliTPCclusterMI * cl = fClusterPointer[i];
647// if (cl==0) continue;
648// if (onlyused && (!cl->IsUsed(10))) continue;
649// if (cl->IsUsed(11)) {
650// fNShared++;
651// continue;
652// }
653// Int_t type = cl->GetType();
654// //if (point->fIsShared){
655// // fNShared++;
656// // continue;
657// //}
658// //if (pointm)
659// // if (pointm->fIsShared) continue;
660// //if (pointp)
661// // if (pointp->fIsShared) continue;
662
663// if (type<0) continue;
664// //if (type>10) continue;
665// //if (point->GetErrY()==0) continue;
666// //if (point->GetErrZ()==0) continue;
667
668// //Float_t ddy = (point->GetY()-cl->GetY())/point->GetErrY();
669// //Float_t ddz = (point->GetZ()-cl->GetZ())/point->GetErrZ();
670// //if ((ddy*ddy+ddz*ddz)>10) continue;
671
672
673// // if (point->GetCPoint().GetMax()<5) continue;
674// if (cl->GetMax()<5) continue;
675// Float_t angley = point->GetAngleY();
676// Float_t anglez = point->GetAngleZ();
677
678// Float_t rsigmay2 = point->GetSigmaY();
679// Float_t rsigmaz2 = point->GetSigmaZ();
680// /*
681// Float_t ns = 1.;
682// if (pointm){
683// rsigmay += pointm->GetTPoint().GetSigmaY();
684// rsigmaz += pointm->GetTPoint().GetSigmaZ();
685// ns+=1.;
686// }
687// if (pointp){
688// rsigmay += pointp->GetTPoint().GetSigmaY();
689// rsigmaz += pointp->GetTPoint().GetSigmaZ();
690// ns+=1.;
691// }
692// rsigmay/=ns;
693// rsigmaz/=ns;
694// */
695
696// Float_t rsigma = TMath::Sqrt(rsigmay2*rsigmaz2);
697
698// Float_t ampc = 0; // normalization to the number of electrons
699// if (i>64){
700// // ampc = 1.*point->GetCPoint().GetMax();
701// ampc = 1.*cl->GetMax();
702// //ampc = 1.*point->GetCPoint().GetQ();
703// // AliTPCClusterPoint & p = point->GetCPoint();
704// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.6)) - TMath::Abs(p.GetY()/0.6)+0.5);
705// // Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
706// //Float_t dz =
707// // TMath::Abs( Int_t(iz) - iz + 0.5);
708// //ampc *= 1.15*(1-0.3*dy);
709// //ampc *= 1.15*(1-0.3*dz);
710// // Float_t zfactor = (AliTPCReconstructor::GetCtgRange()-0.0004*TMath::Abs(point->GetCPoint().GetZ()));
711// //ampc *=zfactor;
712// }
713// else{
714// //ampc = 1.0*point->GetCPoint().GetMax();
715// ampc = 1.0*cl->GetMax();
716// //ampc = 1.0*point->GetCPoint().GetQ();
717// //AliTPCClusterPoint & p = point->GetCPoint();
718// // Float_t dy = TMath::Abs(Int_t( TMath::Abs(p.GetY()/0.4)) - TMath::Abs(p.GetY()/0.4)+0.5);
719// //Float_t iz = (250.0-TMath::Abs(p.GetZ())+0.11)/0.566;
720// //Float_t dz =
721// // TMath::Abs( Int_t(iz) - iz + 0.5);
722
723// //ampc *= 1.15*(1-0.3*dy);
724// //ampc *= 1.15*(1-0.3*dz);
725// // Float_t zfactor = (1.02-0.000*TMath::Abs(point->GetCPoint().GetZ()));
726// //ampc *=zfactor;
727
728// }
729// ampc *= 2.0; // put mean value to channel 50
730// //ampc *= 0.58; // put mean value to channel 50
731// Float_t w = 1.;
732// // if (type>0) w = 1./(type/2.-0.5);
733// // Float_t z = TMath::Abs(cl->GetZ());
734// if (i<64) {
735// ampc /= 0.6;
736// //ampc /= (1+0.0008*z);
737// } else
738// if (i>128){
739// ampc /=1.5;
740// //ampc /= (1+0.0008*z);
741// }else{
742// //ampc /= (1+0.0008*z);
743// }
81e97e0d 744
ba5e52fb 745// if (type<0) { //amp at the border - lower weight
746// // w*= 2.;
81e97e0d 747
ba5e52fb 748// continue;
749// }
750// if (rsigma>1.5) ampc/=1.3; // if big backround
751// amp[nc[of]] = ampc;
752// amp[nc[of]] /=gainGG;
753// angular[nc[of]] = TMath::Sqrt(1.+angley*angley+anglez*anglez);
754// weight[nc[of]] = w;
755// nc[of]++;
756// }
81e97e0d 757
ba5e52fb 758// TMath::Sort(nc[of],amp,index,kFALSE);
759// Float_t sumamp=0;
760// Float_t sumamp2=0;
761// Float_t sumw=0;
762// //meanlog = amp[index[Int_t(nc[of]*0.33)]];
763// meanlog = 50;
764// for (Int_t i=int(nc[of]*low+0.5);i<int(nc[of]*up+0.5);i++){
765// Float_t ampl = amp[index[i]]/angular[index[i]];
766// ampl = meanlog*TMath::Log(1.+ampl/meanlog);
767// //
768// sumw += weight[index[i]];
769// sumamp += weight[index[i]]*ampl;
770// sumamp2 += weight[index[i]]*ampl*ampl;
771// norm[of] += angular[index[i]]*weight[index[i]];
772// }
773// if (sumw<1){
774// SetdEdx(0);
775// }
776// else {
777// norm[of] /= sumw;
778// mean[of] = sumamp/sumw;
779// sigma[of] = sumamp2/sumw-mean[of]*mean[of];
780// if (sigma[of]>0.1)
781// sigma[of] = TMath::Sqrt(sigma[of]);
782// else
783// sigma[of] = 1000;
81e97e0d 784
ba5e52fb 785// mean[of] = (TMath::Exp(mean[of]/meanlog)-1)*meanlog;
786// //mean *=(1-0.02*(sigma/(mean*0.17)-1.));
787// //mean *=(1-0.1*(norm-1.));
788// }
789// }
790
791// Float_t dedx =0;
792// fSdEdx =0;
793// fMAngular =0;
794// // mean[0]*= (1-0.05*(sigma[0]/(0.01+mean[1]*0.18)-1));
795// // mean[1]*= (1-0.05*(sigma[1]/(0.01+mean[0]*0.18)-1));
81e97e0d 796
797
ba5e52fb 798// // dedx = (mean[0]* TMath::Sqrt((1.+nc[0]))+ mean[1]* TMath::Sqrt((1.+nc[1])) )/
799// // ( TMath::Sqrt((1.+nc[0]))+TMath::Sqrt((1.+nc[1])));
800
801// Int_t norm2 = 0;
802// Int_t norm3 = 0;
803// for (Int_t i =0;i<4;i++){
804// if (nc[i]>2&&nc[i]<1000){
805// dedx += mean[i] *nc[i];
806// fSdEdx += sigma[i]*(nc[i]-2);
807// fMAngular += norm[i] *nc[i];
808// norm2 += nc[i];
809// norm3 += nc[i]-2;
810// }
811// fDEDX[i] = mean[i];
812// fSDEDX[i] = sigma[i];
813// fNCDEDX[i]= nc[i];
814// }
815
816// if (norm3>0){
817// dedx /=norm2;
818// fSdEdx /=norm3;
819// fMAngular/=norm2;
820// }
821// else{
822// SetdEdx(0);
823// return 0;
824// }
825// // Float_t dedx1 =dedx;
826// /*
827// dedx =0;
828// for (Int_t i =0;i<4;i++){
829// if (nc[i]>2&&nc[i]<1000){
830// mean[i] = mean[i]*(1-0.12*(sigma[i]/(fSdEdx)-1.));
831// dedx += mean[i] *nc[i];
832// }
833// fDEDX[i] = mean[i];
834// }
835// dedx /= norm2;
836// */
81e97e0d 837
838
ba5e52fb 839// SetdEdx(dedx);
840// return dedx;
81e97e0d 841}
81e97e0d 842
843void AliTPCseed::CookPID()
844{
845 //
846 // cook PID information according dEdx
847 //
848 Double_t fRange = 10.;
849 Double_t fRes = 0.1;
850 Double_t fMIP = 47.;
851 //
852 Int_t ns=AliPID::kSPECIES;
853 Double_t sumr =0;
854 for (Int_t j=0; j<ns; j++) {
855 Double_t mass=AliPID::ParticleMass(j);
6c94f330 856 Double_t mom=GetP();
81e97e0d 857 Double_t dedx=fdEdx/fMIP;
5731b051 858 Double_t bethe=AliMathBase::BetheBlochAleph(mom/mass);
81e97e0d 859 Double_t sigma=fRes*bethe;
860 if (sigma>0.001){
861 if (TMath::Abs(dedx-bethe) > fRange*sigma) {
862 fTPCr[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
863 sumr+=fTPCr[j];
864 continue;
865 }
866 fTPCr[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
867 sumr+=fTPCr[j];
868 }
869 else{
870 fTPCr[j]=1.;
871 sumr+=fTPCr[j];
872 }
873 }
874 for (Int_t j=0; j<ns; j++) {
875 fTPCr[j]/=sumr; //normalize
876 }
877}
878
6c94f330 879Double_t AliTPCseed::GetYat(Double_t xk) const {
880//-----------------------------------------------------------------
881// This function calculates the Y-coordinate of a track at the plane x=xk.
882//-----------------------------------------------------------------
883 if (TMath::Abs(GetSnp())>AliTPCReconstructor::GetMaxSnpTrack()) return 0.; //patch 01 jan 06
60e55aee 884 Double_t c1=GetSnp(), r1=TMath::Sqrt((1.-c1)*(1.+c1));
6c94f330 885 Double_t c2=c1+GetC()*(xk-GetX());
886 if (TMath::Abs(c2)>AliTPCReconstructor::GetMaxSnpTrack()) return 0;
60e55aee 887 Double_t r2=TMath::Sqrt((1.-c2)*(1.+c2));
6c94f330 888 return GetY() + (xk-GetX())*(c1+c2)/(r1+r2);
889}
890
0a65832b 891
892
8a92e133 893Float_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 894
895 //
896 // calculates dedx using the cluster
897 // low - up specify trunc mean range - default form 0-0.7
8076baa0 898 // type - 1 - max charge or 0- total charge in cluster
899 // //2- max no corr 3- total+ correction
0a65832b 900 // i1-i2 - the pad-row range used for calculation
ba5e52fb 901 // shapeNorm - kTRUE -taken from OCDB
902 //
903 // posNorm - usage of pos normalization
83afd539 904 // padNorm - pad type normalization
905 // returnVal - 0 return mean
906 // - 1 return RMS
907 // - 2 return number of clusters
908 //
0a65832b 909 // normalization parametrization taken from AliTPCClusterParam
910 //
ba5e52fb 911 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
912 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
913 if (!parcl) return 0;
914 if (!param) return 0;
83afd539 915 Int_t row0 = param->GetNRowLow();
916 Int_t row1 = row0+param->GetNRowUp1();
917
0a65832b 918 Float_t amp[160];
919 Int_t indexes[160];
920 Int_t ncl=0;
921 //
922 //
ba5e52fb 923 Float_t gainGG = 1; // gas gain factor -always enabled
924 Float_t gainPad = 1; // gain map - used always
83afd539 925 Float_t corrShape = 1; // correction due angular effect, diffusion and electron attachment
ba5e52fb 926 Float_t corrPos = 1; // local position correction - if posNorm enabled
927 Float_t corrPadType = 1; // pad type correction - if padNorm enabled
928 Float_t corrNorm = 1; // normalization factor - set Q to channel 50
929 //
930 //
931 //
4cc7ba77 932 if (AliTPCcalibDB::Instance()->GetParameters()){
ba5e52fb 933 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
4cc7ba77 934 }
935
0a65832b 936 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
4cc7ba77 937 const Float_t kedgey =3.;
0a65832b 938 //
7cd8ac3f 939 //
0a65832b 940 for (Int_t irow=i1; irow<i2; irow++){
941 AliTPCclusterMI* cluster = GetClusterPointer(irow);
942 if (!cluster) continue;
943 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
8076baa0 944 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
ba5e52fb 945 Int_t ipad= 0;
83afd539 946 if (irow>=row0) ipad=1;
947 if (irow>=row1) ipad=2;
ba5e52fb 948 //
949 //
950 //
951 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
952 if (gainMap) {
953 //
954 // Get gainPad - pad by pad calibration
955 //
d6920632 956 Float_t factor = 1;
957 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
83afd539 958 if (irow < row0) { // IROC
ba5e52fb 959 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
d6920632 960 } else { // OROC
83afd539 961 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
d6920632 962 }
ba5e52fb 963 if (factor>0.5) gainPad=factor;
7cd8ac3f 964 }
ba5e52fb 965 //
966 //do position and angular normalization
967 //
968 if (shapeNorm){
969 if (type<=1){
970 //
971 AliTPCTrackerPoint * point = GetTrackPoint(irow);
972 Float_t ty = TMath::Abs(point->GetAngleY());
83afd539 973 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
ba5e52fb 974
975 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
976 corrShape = parcl->Qnorm(ipad,type,dr,ty,tz);
977 }
0a65832b 978 }
ba5e52fb 979
8a92e133 980 if (posNorm>0){
8e1dcdda 981 //
ba5e52fb 982 // Do position normalization - relative distance to
983 // center of pad- time bin
984 // Work in progress
022a2383 985 // corrPos = parcl->QnormPos(ipad,type, cluster->GetPad(),
986 // cluster->GetTimeBin(), cluster->GetZ(),
987 // cluster->GetSigmaY2(),cluster->GetSigmaZ2(),
988 // cluster->GetMax(),cluster->GetQ());
8a92e133 989 // scaled response function
990 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
991 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
992 //
993
022a2383 994 AliTPCTrackerPoint * point = GetTrackPoint(irow);
995 Float_t ty = TMath::Abs(point->GetAngleY());
996 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
997
998 if (type==1) corrPos =
999 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1000 cluster->GetTimeBin(),ty,tz,yres0,zres0,0.4);
022a2383 1001 if (type==0) corrPos =
1002 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1003 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,0.4);
1004 if (posNorm==3){
1005 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
1006 Double_t signtgl = (cluster->GetZ()*point->GetAngleZ()>0)? 1:-1;
1007 Double_t p2 = TMath::Abs(TMath::Sin(TMath::ATan(ty)));
1008 Float_t corrHis = parcl->QnormHis(ipad,type,dr,p2,TMath::Abs(point->GetAngleZ())*signtgl);
1009 if (corrHis>0) corrPos*=corrHis;
1010 }
1011
8e1dcdda 1012 }
1013
ba5e52fb 1014 if (padNorm==1){
1015 //taken from OCDB
798017c7 1016 if (type==0 && parcl->QpadTnorm()) corrPadType = (*parcl->QpadTnorm())[ipad];
1017 if (type==1 && parcl->QpadMnorm()) corrPadType = (*parcl->QpadMnorm())[ipad];
022a2383 1018
2fc9608f 1019 }
ba5e52fb 1020 if (padNorm==2){
1021 corrPadType =param->GetPadPitchLength(cluster->GetDetector(),cluster->GetRow());
1022 //use hardwired - temp fix
1023 if (type==0) corrNorm=3.;
1024 if (type==1) corrNorm=1.;
1025 }
1026 //
1027 amp[ncl]=charge;
1028 amp[ncl]/=gainGG;
1029 amp[ncl]/=gainPad;
1030 amp[ncl]/=corrShape;
1031 amp[ncl]/=corrPadType;
1032 amp[ncl]/=corrPos;
1033 amp[ncl]/=corrNorm;
1034 //
0a65832b 1035 ncl++;
1036 }
8076baa0 1037
0a65832b 1038 if (type>3) return ncl;
1039 TMath::Sort(ncl,amp, indexes, kFALSE);
1040
8076baa0 1041 if (ncl<10) return 0;
0a65832b 1042
1043 Float_t suma=0;
83afd539 1044 Float_t suma2=0;
0a65832b 1045 Float_t sumn=0;
1046 Int_t icl0=TMath::Nint(ncl*low);
1047 Int_t icl1=TMath::Nint(ncl*up);
1048 for (Int_t icl=icl0; icl<icl1;icl++){
1049 suma+=amp[indexes[icl]];
83afd539 1050 suma2+=amp[indexes[icl]]*amp[indexes[icl]];
0a65832b 1051 sumn++;
1052 }
83afd539 1053 Float_t mean =suma/sumn;
1054 Float_t rms =TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
3af3fbc4 1055 //
1056 // do time-dependent correction for pressure and temperature variations
1057 UInt_t runNumber = 1;
1058 Float_t corrTimeGain = 1;
1059 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
e5e80ff9 1060 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
1061 if (trans && recoParam->GetUseGainCorrectionTime()>0) {
3af3fbc4 1062 runNumber = trans->GetCurrentRunNumber();
e5e80ff9 1063 //AliTPCcalibDB::Instance()->SetRun(runNumber);
a2c3785e 1064 TObjArray * timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
3af3fbc4 1065 if (timeGainSplines) {
1066 UInt_t time = trans->GetCurrentTimeStamp();
1067 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1068 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1069 if (fitMIP) {
108a67db 1070 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time);/*fitMIP->Eval(time);*/
3af3fbc4 1071 } else {
108a67db 1072 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time);/*fitFPcosmic->Eval(time);*/
3af3fbc4 1073 }
1074 }
1075 }
1076 mean /= corrTimeGain;
1077 rms /= corrTimeGain;
1078 //
83afd539 1079 if (returnVal==1) return rms;
8a92e133 1080 if (returnVal==2) return ncl;
1081 return mean;
1082}
1083
6feb400f 1084Float_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 1085
1086 //
1087 // calculates dedx using the cluster
1088 // low - up specify trunc mean range - default form 0-0.7
1089 // type - 1 - max charge or 0- total charge in cluster
1090 // //2- max no corr 3- total+ correction
1091 // i1-i2 - the pad-row range used for calculation
1092 //
1093 // posNorm - usage of pos normalization
6feb400f 1094 // returnVal - 0 return mean
1095 // - 1 return RMS
1096 // - 2 return number of clusters
1097 // - 3 ratio
1098 // - 4 mean upper half
1099 // - 5 mean - lower half
1100 // - 6 third moment
1101 // mode - 0 - linear
1102 // - 1 - logatithmic
2efc897f 1103 // rowThres - number of rows before and after given pad row to check for clusters below threshold
8a92e133 1104 //
1105 // normalization parametrization taken from AliTPCClusterParam
1106 //
1107 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
1108 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
1109 if (!parcl) return 0;
1110 if (!param) return 0;
1111 Int_t row0 = param->GetNRowLow();
1112 Int_t row1 = row0+param->GetNRowUp1();
1113
1114 Float_t amp[160];
1115 Int_t indexes[160];
1116 Int_t ncl=0;
2efc897f 1117 Int_t nclBelowThr = 0; // counts number of clusters below threshold
8a92e133 1118 //
1119 //
1120 Float_t gainGG = 1; // gas gain factor -always enabled
1121 Float_t gainPad = 1; // gain map - used always
1122 Float_t corrPos = 1; // local position correction - if posNorm enabled
8a92e133 1123 //
1124 //
1125 //
1126 if (AliTPCcalibDB::Instance()->GetParameters()){
1127 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
1128 }
649fcc43 1129 //
1130 // extract time-dependent correction for pressure and temperature variations
1131 //
1132 UInt_t runNumber = 1;
1133 Float_t corrTimeGain = 1;
1134 TObjArray * timeGainSplines = 0x0;
1135 TGraphErrors * grPadEqual = 0x0;
1136 //
1137 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
1138 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
6d64657a 1139 //
1140 if (recoParam->GetNeighborRowsDedx() == 0) rowThres = 0;
1141 //
649fcc43 1142 if (trans) {
2efc897f 1143 runNumber = trans->GetCurrentRunNumber();
1144 //AliTPCcalibDB::Instance()->SetRun(runNumber);
1145 timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
1146 if (timeGainSplines && recoParam->GetUseGainCorrectionTime()>0) {
1147 UInt_t time = trans->GetCurrentTimeStamp();
1148 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1149 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1150 if (fitMIP) {
1151 corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitMIP, time); /*fitMIP->Eval(time);*/
649fcc43 1152 } else {
2efc897f 1153 if (fitFPcosmic) corrTimeGain = AliTPCcalibDButil::EvalGraphConst(fitFPcosmic, time); /*fitFPcosmic->Eval(time); */
1154 }
649fcc43 1155 //
1156 if (type==1) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQMAX_PADREGIONGAIN_BEAM_ALL");
1157 if (type==0) grPadEqual = (TGraphErrors * ) timeGainSplines->FindObject("TGRAPHERRORS_MEANQTOT_PADREGIONGAIN_BEAM_ALL");
2efc897f 1158 }
649fcc43 1159 }
2efc897f 1160
1161 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
8a92e133 1162 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1163 const Float_t kedgey =3.;
1164 //
1165 //
1166 for (Int_t irow=i1; irow<i2; irow++){
1167 AliTPCclusterMI* cluster = GetClusterPointer(irow);
736a5826 1168 if (!cluster && irow > 1 && irow < 157) {
2efc897f 1169 Bool_t isClBefore = kFALSE;
1170 Bool_t isClAfter = kFALSE;
1171 for(Int_t ithres = 1; ithres <= rowThres; ithres++) {
1172 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1173 if (clusterBefore) isClBefore = kTRUE;
1174 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1175 if (clusterAfter) isClAfter = kTRUE;
1176 }
1177 if (isClBefore && isClAfter) nclBelowThr++;
2efc897f 1178 }
736a5826 1179 if (!cluster) continue;
2efc897f 1180 //
1181 //
8a92e133 1182 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
2efc897f 1183 //
1184 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1185 if (point==0) continue;
1186 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1187 if (rsigmay > kClusterShapeCut) continue;
1188 //
1189 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1190 //
8a92e133 1191 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
1192 Int_t ipad= 0;
1193 if (irow>=row0) ipad=1;
1194 if (irow>=row1) ipad=2;
1195 //
1196 //
1197 //
1198 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1199 if (gainMap) {
1200 //
1201 // Get gainPad - pad by pad calibration
1202 //
1203 Float_t factor = 1;
1204 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
1205 if (irow < row0) { // IROC
1206 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
1207 } else { // OROC
1208 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
1209 }
2efc897f 1210 if (factor>0.3) gainPad=factor;
8a92e133 1211 }
8a92e133 1212 //
1213 // Do position normalization - relative distance to
1214 // center of pad- time bin
1215
8a92e133 1216 Float_t ty = TMath::Abs(point->GetAngleY());
1217 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1218 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1219 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1220
1221 yres0 *=parcl->GetQnormCorr(ipad, type,0);
1222 zres0 *=parcl->GetQnormCorr(ipad, type,1);
1223 Float_t effLength=parcl->GetQnormCorr(ipad, type,4)*0.5;
1224 Float_t effDiff =(parcl->GetQnormCorr(ipad, type,2)+parcl->GetQnormCorr(ipad, type,3))*0.5;
1225 //
1226 if (type==1) {
1227 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1228 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1229 cluster->GetTimeBin(),ty,tz,yres0,zres0,effLength,effDiff);
1230 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1231 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1232 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1233 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1234 //
1235 }
1236 if (type==0) {
1237 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1238 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1239 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,effLength,effDiff);
1240
1241 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1242 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1243 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1244 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1245 //
1246 }
2efc897f 1247 //
1248 // pad region equalization outside of cluster param
1249 //
1250 Float_t gainEqualPadRegion = 1;
649fcc43 1251 if (grPadEqual) gainEqualPadRegion = grPadEqual->Eval(ipad);
8a92e133 1252 //
1253 amp[ncl]=charge;
1254 amp[ncl]/=gainGG;
1255 amp[ncl]/=gainPad;
1256 amp[ncl]/=corrPos;
2efc897f 1257 amp[ncl]/=gainEqualPadRegion;
8a92e133 1258 //
1259 ncl++;
1260 }
1261
6feb400f 1262 if (type==2) return ncl;
8a92e133 1263 TMath::Sort(ncl,amp, indexes, kFALSE);
2efc897f 1264 //
8a92e133 1265 if (ncl<10) return 0;
2efc897f 1266 //
1267 Double_t * ampWithBelow = new Double_t[ncl + nclBelowThr];
1268 for(Int_t iCl = 0; iCl < ncl + nclBelowThr; iCl++) {
1269 if (iCl < nclBelowThr) {
1270 ampWithBelow[iCl] = amp[indexes[0]];
1271 } else {
1272 ampWithBelow[iCl] = amp[indexes[iCl - nclBelowThr]];
1273 }
1274 }
1275 //printf("DEBUG: %i shit %f", nclBelowThr, amp[indexes[0]]);
1276 //
8a92e133 1277 Float_t suma=0;
1278 Float_t suma2=0;
6feb400f 1279 Float_t suma3=0;
1280 Float_t sumaS=0;
8a92e133 1281 Float_t sumn=0;
6feb400f 1282 // upper,and lower part statistic
1283 Float_t sumL=0, sumL2=0, sumLN=0;
1284 Float_t sumD=0, sumD2=0, sumDN=0;
1285
2efc897f 1286 Int_t icl0=TMath::Nint((ncl + nclBelowThr)*low);
1287 Int_t icl1=TMath::Nint((ncl + nclBelowThr)*up);
6feb400f 1288 Int_t iclm=TMath::Nint((ncl + nclBelowThr)*(low +(up+low)*0.5));
1289 //
8a92e133 1290 for (Int_t icl=icl0; icl<icl1;icl++){
6feb400f 1291 if (ampWithBelow[icl]<0.1) continue;
504dd8df 1292 Double_t camp=ampWithBelow[icl]/corrTimeGain;
1293 if (mode==1) camp= TMath::Log(camp);
6feb400f 1294 if (icl<icl1){
504dd8df 1295 suma+=camp;
1296 suma2+=camp*camp;
1297 suma3+=camp*camp*camp;
1298 sumaS+=TMath::Power(TMath::Abs(camp),1./3.);
6feb400f 1299 sumn++;
1300 }
1301 if (icl>iclm){
504dd8df 1302 sumL+=camp;
1303 sumL2+=camp*camp;
6feb400f 1304 sumLN++;
1305 }
1306 if (icl<=iclm){
504dd8df 1307 sumD+=camp;
1308 sumD2+=camp*camp;
6feb400f 1309 sumDN++;
1310 }
8a92e133 1311 }
0f7547f1 1312 //
1313 Float_t mean = 0;
1314 Float_t meanL = 0;
1315 Float_t meanD = 0; // lower half mean
1316 if (sumn > 1e-30) mean =suma/sumn;
1317 if (sumLN > 1e-30) meanL =sumL/sumLN;
1318 if (sumDN > 1e-30) meanD =(sumD/sumDN);
1319 /*
8a92e133 1320 Float_t mean =suma/sumn;
6feb400f 1321 Float_t meanL = sumL/sumLN;
1322 Float_t meanD =(sumD/sumDN); // lower half mean
0f7547f1 1323 */
28273e26 1324
1325 Float_t rms = 0;
1326 Float_t mean2=0;
1327 Float_t mean3=0;
1328 Float_t meanS=0;
1329
1330 if(sumn>0){
1331 rms = TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
1332 mean2=suma2/sumn;
1333 mean3=suma3/sumn;
1334 meanS=sumaS/sumn;
1335 }
1336
6feb400f 1337 if (mean2>0) mean2=TMath::Power(TMath::Abs(mean2),1./2.);
1338 if (mean3>0) mean3=TMath::Power(TMath::Abs(mean3),1./3.);
1339 if (meanS>0) meanS=TMath::Power(TMath::Abs(meanS),3.);
3af3fbc4 1340 //
6feb400f 1341 if (mode==1) mean=TMath::Exp(mean);
1342 if (mode==1) meanL=TMath::Exp(meanL); // upper truncation
1343 if (mode==1) meanD=TMath::Exp(meanD); // lower truncation
1344 //
1345 delete [] ampWithBelow;
1346
1347
3af3fbc4 1348 //
8a92e133 1349 if (returnVal==1) return rms;
83afd539 1350 if (returnVal==2) return ncl;
6feb400f 1351 if (returnVal==3) return Double_t(nclBelowThr)/Double_t(nclBelowThr+ncl);
1352 if (returnVal==4) return meanL;
1353 if (returnVal==5) return meanD;
1354 if (returnVal==6) return mean2;
1355 if (returnVal==7) return mean3;
1356 if (returnVal==8) return meanS;
83afd539 1357 return mean;
0a65832b 1358}
1359
83afd539 1360
0a65832b 1361
1362
eb02f63a 1363Float_t AliTPCseed::CookShape(Int_t type){
1364 //
1365 //
1366 //
1367 //-----------------------------------------------------------------
1368 // This funtion calculates dE/dX within the "low" and "up" cuts.
1369 //-----------------------------------------------------------------
1370 Float_t means=0;
1371 Float_t meanc=0;
1372 for (Int_t i =0; i<160;i++) {
1373 AliTPCTrackerPoint * point = GetTrackPoint(i);
1374 if (point==0) continue;
1375
1376 AliTPCclusterMI * cl = fClusterPointer[i];
1377 if (cl==0) continue;
1378
1379 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1380 Float_t rsigmaz = TMath::Sqrt(point->GetSigmaZ());
1381 Float_t rsigma = (rsigmay+rsigmaz)*0.5;
1382 if (type==0) means+=rsigma;
1383 if (type==1) means+=rsigmay;
1384 if (type==2) means+=rsigmaz;
1385 meanc++;
1386 }
1387 Float_t mean = (meanc>0)? means/meanc:0;
1388 return mean;
1389}
87e92a27 1390
1391
1392
1393Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
1394 //
1395 // Refit the track
1396 // return value - number of used clusters
1397 //
1398 //
1399 const Int_t kMinNcl =10;
1400 AliTPCseed *track=new AliTPCseed(*seed);
1401 Int_t sector=-1;
1402 // reset covariance
1403 //
1404 Double_t covar[15];
1405 for (Int_t i=0;i<15;i++) covar[i]=0;
1406 covar[0]=10.*10.;
1407 covar[2]=10.*10.;
1408 covar[5]=10.*10./(64.*64.);
1409 covar[9]=10.*10./(64.*64.);
1410 covar[14]=1*1;
1411 //
1412
1413 Float_t xmin=1000, xmax=-10000;
1414 Int_t imin=158, imax=0;
1415 for (Int_t i=0;i<160;i++) {
1416 AliTPCclusterMI *c=track->GetClusterPointer(i);
1417 if (!c) continue;
1418 if (sector<0) sector = c->GetDetector();
1419 if (c->GetX()<xmin) xmin=c->GetX();
1420 if (c->GetX()>xmax) xmax=c->GetX();
1421 if (i<imin) imin=i;
1422 if (i>imax) imax=i;
1423 }
1424 if(imax-imin<kMinNcl) {
1425 delete track;
1426 return 0 ;
1427 }
1428 // Not succes to rotate
1429 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1430 delete track;
1431 return 0;
1432 }
1433 //
1434 //
1435 // fit from inner to outer row
1436 //
1437 AliExternalTrackParam paramIn;
1438 AliExternalTrackParam paramOut;
1439 Bool_t isOK=kTRUE;
be34cb88 1440 Int_t ncl=0;
87e92a27 1441 //
1442 //
1443 //
1444 for (Int_t i=imin; i<=imax; i++){
1445 AliTPCclusterMI *c=track->GetClusterPointer(i);
1446 if (!c) continue;
1447 // if (RejectCluster(c,track)) continue;
be34cb88 1448 sector = (c->GetDetector()%18);
1449 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1450 //continue;
1451 }
87e92a27 1452 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1453 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1454 if (!track->PropagateTo(r[0])) {
1455 isOK=kFALSE;
87e92a27 1456 }
1457 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1458 }
1459 if (!isOK) { delete track; return 0;}
1460 track->AddCovariance(covar);
1461 //
1462 //
1463 //
1464 for (Int_t i=imax; i>=imin; i--){
1465 AliTPCclusterMI *c=track->GetClusterPointer(i);
1466 if (!c) continue;
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 }
be34cb88 1479 //if (!isOK) { delete track; return 0;}
87e92a27 1480 paramIn = *track;
1481 track->AddCovariance(covar);
1482 //
1483 //
1484 for (Int_t i=imin; i<=imax; i++){
1485 AliTPCclusterMI *c=track->GetClusterPointer(i);
1486 if (!c) continue;
be34cb88 1487 sector = (c->GetDetector()%18);
1488 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1489 //continue;
1490 }
1491 ncl++;
87e92a27 1492 //if (RejectCluster(c,track)) continue;
1493 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1494 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1495 if (!track->PropagateTo(r[0])) {
1496 isOK=kFALSE;
87e92a27 1497 }
1498 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1499 }
be34cb88 1500 //if (!isOK) { delete track; return 0;}
87e92a27 1501 paramOut=*track;
87e92a27 1502 //
1503 //
1504 //
1505 if (parin) (*parin)=paramIn;
1506 if (parout) (*parout)=paramOut;
6e23caff 1507 delete track;
be34cb88 1508 return ncl;
87e92a27 1509}
1510
1511
1512
1513Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
1514 //
1515 //
1516 //
1517 return kFALSE;
1518}
3247d397 1519
1520
1521
1522
1523
1524
1525void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1526 Double_t& erry, Double_t &errz)
1527{
1528 //
1529 // Get cluster error at given position
1530 //
1531 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1532 Double_t tany,tanz;
1533 Double_t snp1=param->GetSnp();
60e55aee 1534 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1535 //
1536 Double_t tgl1=param->GetTgl();
60e55aee 1537 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1538 //
1539 Int_t padSize = 0; // short pads
1540 if (cluster->GetDetector() >= 36) {
1541 padSize = 1; // medium pads
1542 if (cluster->GetRow() > 63) padSize = 2; // long pads
1543 }
1544
1545 erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
1546 errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
1547}
1548
1549
1550void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1551 Double_t& rmsy, Double_t &rmsz)
1552{
1553 //
1554 // Get cluster error at given position
1555 //
1556 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1557 Double_t tany,tanz;
1558 Double_t snp1=param->GetSnp();
60e55aee 1559 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1560 //
1561 Double_t tgl1=param->GetTgl();
60e55aee 1562 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1563 //
1564 Int_t padSize = 0; // short pads
1565 if (cluster->GetDetector() >= 36) {
1566 padSize = 1; // medium pads
1567 if (cluster->GetRow() > 63) padSize = 2; // long pads
1568 }
1569
1570 rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
1571 rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
1572}
ba5e52fb 1573
1574
1575
1576Double_t AliTPCseed::GetQCorrGeom(Float_t ty, Float_t tz){
1577 //Geoetrical
1578 //ty - tangent in local y direction
1579 //tz - tangent
1580 //
1581 Float_t norm=TMath::Sqrt(1+ty*ty+tz*tz);
1582 return norm;
1583}
1584
83afd539 1585Double_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 1586 //
1587 // Q normalization
1588 //
1589 // return value = Q Normalization factor
1590 // Normalization - 1 - shape factor part for full drift
1591 // 1 - electron attachment for 0 drift
1592
1593 // Input parameters:
1594 //
1595 // ipad - 0 short pad
1596 // 1 medium pad
1597 // 2 long pad
1598 //
1599 // type - 0 qmax
1600 // - 1 qtot
1601 //
1602 //z - z position (-250,250 cm)
1603 //ty - tangent in local y direction
1604 //tz - tangent
1605 //
1606
1607 AliTPCClusterParam * paramCl = AliTPCcalibDB::Instance()->GetClusterParam();
1608 AliTPCParam * paramTPC = AliTPCcalibDB::Instance()->GetParameters();
1609
1610 if (!paramCl) return 1;
1611 //
1612 Double_t dr = 250.-TMath::Abs(z);
1613 Double_t sy = paramCl->GetRMS0( 0,ipad, dr, TMath::Abs(ty));
1614 Double_t sy0= paramCl->GetRMS0(0,ipad, 250, 0);
1615 Double_t sz = paramCl->GetRMS0( 1,ipad, dr, TMath::Abs(tz));
1616 Double_t sz0= paramCl->GetRMS0(1,ipad, 250, 0);
1617
1618 Double_t sfactorMax = TMath::Sqrt(sy0*sz0/(sy*sz));
1619
1620
1621 Double_t dt = 1000000*(dr/paramTPC->GetDriftV()); //time in microsecond
1622 Double_t attProb = TMath::Exp(-paramTPC->GetAttCoef()*paramTPC->GetOxyCont()*dt);
1623 //
1624 //
1625 if (type==0) return sfactorMax*attProb;
1626
1627 return attProb;
1628
1629
1630}
1631
64bf5ca0 1632
1633//_______________________________________________________________________
1634Float_t AliTPCseed::GetTPCClustInfo(Int_t nNeighbours, Int_t type, Int_t row0, Int_t row1)
1635{
1636 //
1637 // TPC cluster information
1638 // type 0: get fraction of found/findable clusters with neighbourhood definition
1639 // 1: found clusters
1640 // 2: findable (number of clusters above and below threshold)
1641 //
1642 // definition of findable clusters:
1643 // a cluster is defined as findable if there is another cluster
1644 // within +- nNeighbours pad rows. The idea is to overcome threshold
1645 // effects with a very simple algorithm.
1646 //
1647
1648 const Float_t kClusterShapeCut = 1.5; // IMPPRTANT TO DO: move value to AliTPCRecoParam
1649 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1650 const Float_t kedgey =3.;
1651
1652 Float_t ncl = 0;
1653 Float_t nclBelowThr = 0; // counts number of clusters below threshold
1654
1655 for (Int_t irow=row0; irow<row1; irow++){
1656 AliTPCclusterMI* cluster = GetClusterPointer(irow);
1657
1658 if (!cluster && irow > 1 && irow < 157) {
1659 Bool_t isClBefore = kFALSE;
1660 Bool_t isClAfter = kFALSE;
1661 for(Int_t ithres = 1; ithres <= nNeighbours; ithres++) {
1662 AliTPCclusterMI * clusterBefore = GetClusterPointer(irow - ithres);
1663 if (clusterBefore) isClBefore = kTRUE;
1664 AliTPCclusterMI * clusterAfter = GetClusterPointer(irow + ithres);
1665 if (clusterAfter) isClAfter = kTRUE;
1666 }
1667 if (isClBefore && isClAfter) nclBelowThr++;
1668 }
1669 if (!cluster) continue;
1670 //
1671 //
1672 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
1673 //
1674 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1675 if (point==0) continue;
1676 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1677 if (rsigmay > kClusterShapeCut) continue;
1678 //
1679 if (cluster->IsUsed(11)) continue; // remove shared clusters for PbPb
1680 ncl++;
1681 }
1682
1683 if(ncl<10)
1684 return 0;
1685 if(type==0)
1686 if(nclBelowThr+ncl>0)
1687 return ncl/(nclBelowThr+ncl);
1688 if(type==1)
1689 return ncl;
1690 if(type==2)
1691 return ncl+nclBelowThr;
1692 return 0;
1693}