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Added possibility to run without reading the MC (Andrea)
[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//-----------------------------------------------------------------
20// Implementation of the TPC seed class
21// This class is used by the AliTPCtrackerMI class
22// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23//-----------------------------------------------------------------
24#include "TClonesArray.h"
25#include "AliTPCseed.h"
3f82c4f2 26#include "AliTPCReconstructor.h"
0a65832b 27#include "AliTPCClusterParam.h"
7cd8ac3f 28#include "AliTPCCalPad.h"
29#include "AliTPCCalROC.h"
37540068 30#include "AliTPCcalibDB.h"
d080e4a4 31#include "AliTPCParam.h"
5731b051 32#include "AliMathBase.h"
3af3fbc4 33#include "AliTPCTransform.h"
34#include "AliSplineFit.h"
35#include "AliCDBManager.h"
7cd8ac3f 36
37
81e97e0d 38
39ClassImp(AliTPCseed)
40
41
42
32fab534 43AliTPCseed::AliTPCseed():
44 AliTPCtrack(),
45 fEsd(0x0),
2928bdf0 46 fClusterOwner(kFALSE),
32fab534 47 fRow(0),
48 fSector(-1),
49 fRelativeSector(-1),
50 fCurrentSigmaY2(1e10),
51 fCurrentSigmaZ2(1e10),
e0e13b88 52 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
53 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 54 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
55 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
e0e13b88 56 //
32fab534 57 fErrorY2(1e10),
58 fErrorZ2(1e10),
59 fCurrentCluster(0x0),
60 fCurrentClusterIndex1(-1),
61 fInDead(kFALSE),
62 fIsSeeding(kFALSE),
63 fNoCluster(0),
64 fSort(0),
65 fBSigned(kFALSE),
66 fSeedType(0),
67 fSeed1(-1),
68 fSeed2(-1),
69 fMAngular(0),
19b00333 70 fCircular(0),
71 fClusterMap(159),
72 fSharedMap(159)
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;
83 }
84 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
bfb57b6c 85 // for (Int_t i=0;i<160;i++) fClusterMap[i]=kFALSE;
86 //for (Int_t i=0;i<160;i++) fSharedMap[i]=kFALSE;
87 fClusterMap.ResetAllBits(kFALSE);
88 fSharedMap.ResetAllBits(kFALSE);
89
81e97e0d 90}
32fab534 91
2928bdf0 92AliTPCseed::AliTPCseed(const AliTPCseed &s, Bool_t clusterOwner):
32fab534 93 AliTPCtrack(s),
94 fEsd(0x0),
2928bdf0 95 fClusterOwner(clusterOwner),
32fab534 96 fRow(0),
97 fSector(-1),
98 fRelativeSector(-1),
c07cb486 99 fCurrentSigmaY2(-1),
100 fCurrentSigmaZ2(-1),
e0e13b88 101 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
102 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 103 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
104 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 105 fErrorY2(1e10),
106 fErrorZ2(1e10),
107 fCurrentCluster(0x0),
108 fCurrentClusterIndex1(-1),
109 fInDead(kFALSE),
110 fIsSeeding(kFALSE),
111 fNoCluster(0),
112 fSort(0),
113 fBSigned(kFALSE),
114 fSeedType(0),
115 fSeed1(-1),
116 fSeed2(-1),
117 fMAngular(0),
19b00333 118 fCircular(0),
119 fClusterMap(s.fClusterMap),
120 fSharedMap(s.fSharedMap)
32fab534 121{
81e97e0d 122 //---------------------
123 // dummy copy constructor
124 //-------------------------
2928bdf0 125 for (Int_t i=0;i<160;i++) {
126 fClusterPointer[i]=0;
127 if (fClusterOwner){
128 if (s.fClusterPointer[i])
129 fClusterPointer[i] = new AliTPCclusterMI(*(s.fClusterPointer[i]));
130 }else{
131 fClusterPointer[i] = s.fClusterPointer[i];
132 }
133 fTrackPoints[i] = s.fTrackPoints[i];
134 }
81e97e0d 135 for (Int_t i=0;i<160;i++) fIndex[i] = s.fIndex[i];
5c09947e 136 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=s.fTPCr[i];
137 for (Int_t i=0;i<4;i++) {
138 fDEDX[i] = s.fDEDX[i];
139 fSDEDX[i] = s.fSDEDX[i];
140 fNCDEDX[i] = s.fNCDEDX[i];
141 }
142 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = s.fOverlapLabels[i];
19b00333 143
81e97e0d 144}
5c09947e 145
146
32fab534 147AliTPCseed::AliTPCseed(const AliTPCtrack &t):
148 AliTPCtrack(t),
149 fEsd(0x0),
2928bdf0 150 fClusterOwner(kFALSE),
32fab534 151 fRow(0),
152 fSector(-1),
153 fRelativeSector(-1),
c07cb486 154 fCurrentSigmaY2(-1),
155 fCurrentSigmaZ2(-1),
e0e13b88 156 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
157 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 158 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
159 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 160 fErrorY2(1e10),
161 fErrorZ2(1e10),
162 fCurrentCluster(0x0),
163 fCurrentClusterIndex1(-1),
164 fInDead(kFALSE),
165 fIsSeeding(kFALSE),
166 fNoCluster(0),
167 fSort(0),
168 fBSigned(kFALSE),
169 fSeedType(0),
170 fSeed1(-1),
171 fSeed2(-1),
172 fMAngular(0),
19b00333 173 fCircular(0),
174 fClusterMap(159),
175 fSharedMap(159)
32fab534 176{
81e97e0d 177 //
32fab534 178 // Constructor from AliTPCtrack
179 //
180 fFirstPoint =0;
105b1b81 181 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
81e97e0d 182 for (Int_t i=0;i<160;i++) {
183 fClusterPointer[i] = 0;
184 Int_t index = t.GetClusterIndex(i);
185 if (index>=-1){
186 SetClusterIndex2(i,index);
187 }
188 else{
189 SetClusterIndex2(i,-3);
190 }
191 }
32fab534 192 for (Int_t i=0;i<4;i++) {
193 fDEDX[i] = 0.;
194 fSDEDX[i] = 1e10;
195 fNCDEDX[i] = 0;
196 }
197 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
bfb57b6c 198
199 //for (Int_t i=0;i<160;i++) fClusterMap[i]=kFALSE;
200 //for (Int_t i=0;i<160;i++) fSharedMap[i]=kFALSE;
201 fClusterMap.ResetAllBits(kFALSE);
202 fSharedMap.ResetAllBits(kFALSE);
203
81e97e0d 204}
205
6c94f330 206AliTPCseed::AliTPCseed(Double_t xr, Double_t alpha, const Double_t xx[5],
207 const Double_t cc[15], Int_t index):
208 AliTPCtrack(xr, alpha, xx, cc, index),
32fab534 209 fEsd(0x0),
2928bdf0 210 fClusterOwner(kFALSE),
32fab534 211 fRow(0),
212 fSector(-1),
213 fRelativeSector(-1),
c07cb486 214 fCurrentSigmaY2(-1),
215 fCurrentSigmaZ2(-1),
e0e13b88 216 fCMeanSigmaY2p30(-1.), //! current mean sigma Y2 - mean30%
217 fCMeanSigmaZ2p30(-1.), //! current mean sigma Z2 - mean30%
c07cb486 218 fCMeanSigmaY2p30R(-1.), //! current mean sigma Y2 - mean2%
219 fCMeanSigmaZ2p30R(-1.), //! current mean sigma Z2 - mean2%
32fab534 220 fErrorY2(1e10),
221 fErrorZ2(1e10),
222 fCurrentCluster(0x0),
223 fCurrentClusterIndex1(-1),
224 fInDead(kFALSE),
225 fIsSeeding(kFALSE),
226 fNoCluster(0),
227 fSort(0),
228 fBSigned(kFALSE),
229 fSeedType(0),
230 fSeed1(-1),
231 fSeed2(-1),
232 fMAngular(0),
19b00333 233 fCircular(0),
234 fClusterMap(159),
235 fSharedMap(159)
32fab534 236{
237 //
238 // Constructor
81e97e0d 239 //
32fab534 240 fFirstPoint =0;
5c09947e 241 for (Int_t i=0;i<160;i++) SetClusterIndex2(i,-3);
81e97e0d 242 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
81e97e0d 243 for (Int_t i=0;i<5;i++) fTPCr[i]=0.2;
32fab534 244 for (Int_t i=0;i<4;i++) {
245 fDEDX[i] = 0.;
246 fSDEDX[i] = 1e10;
247 fNCDEDX[i] = 0;
248 }
249 for (Int_t i=0;i<12;i++) fOverlapLabels[i] = -1;
81e97e0d 250}
251
252AliTPCseed::~AliTPCseed(){
253 //
254 // destructor
81e97e0d 255 fNoCluster =0;
2928bdf0 256 if (fClusterOwner){
257 for (Int_t icluster=0; icluster<160; icluster++){
258 delete fClusterPointer[icluster];
259 }
260 }
bfb57b6c 261
81e97e0d 262}
179c6296 263//_________________________________________________
316c6cd9 264AliTPCseed & AliTPCseed::operator=(const AliTPCseed &param)
179c6296 265{
266 //
316c6cd9 267 // assignment operator
179c6296 268 //
316c6cd9 269 if(this!=&param){
270 AliTPCtrack::operator=(param);
271 fEsd =param.fEsd;
272 for(Int_t i = 0;i<160;++i)fClusterPointer[i] = param.fClusterPointer[i]; // this is not allocated by AliTPCSeed
273 fClusterOwner = param.fClusterOwner;
274 // leave out fPoint, they are also not copied in the copy ctor...
275 // but deleted in the dtor... strange...
316c6cd9 276 fRow = param.fRow;
277 fSector = param.fSector;
278 fRelativeSector = param.fRelativeSector;
279 fCurrentSigmaY2 = param.fCurrentSigmaY2;
280 fCurrentSigmaZ2 = param.fCurrentSigmaZ2;
281 fErrorY2 = param.fErrorY2;
282 fErrorZ2 = param.fErrorZ2;
283 fCurrentCluster = param.fCurrentCluster; // this is not allocated by AliTPCSeed
284 fCurrentClusterIndex1 = param.fCurrentClusterIndex1;
285 fInDead = param.fInDead;
286 fIsSeeding = param.fIsSeeding;
287 fNoCluster = param.fNoCluster;
288 fSort = param.fSort;
289 fBSigned = param.fBSigned;
290 for(Int_t i = 0;i<4;++i){
291 fDEDX[i] = param.fDEDX[i];
292 fSDEDX[i] = param.fSDEDX[i];
293 fNCDEDX[i] = param.fNCDEDX[i];
294 }
295 for(Int_t i = 0;i<AliPID::kSPECIES;++i)fTPCr[i] = param.fTPCr[i];
296
297 fSeedType = param.fSeedType;
298 fSeed1 = param.fSeed1;
299 fSeed2 = param.fSeed2;
300 for(Int_t i = 0;i<12;++i)fOverlapLabels[i] = param.fOverlapLabels[i];
301 fMAngular = param.fMAngular;
302 fCircular = param.fCircular;
303 for(int i = 0;i<160;++i)fTrackPoints[i] = param.fTrackPoints[i];
304 fClusterMap = param.fClusterMap;
305 fSharedMap = param.fSharedMap;
306 }
179c6296 307 return (*this);
308}
309//____________________________________________________
81e97e0d 310AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
311{
312 //
313 //
314 return &fTrackPoints[i];
315}
316
81e97e0d 317
318
319Double_t AliTPCseed::GetDensityFirst(Int_t n)
320{
321 //
322 //
323 // return cluster for n rows bellow first point
324 Int_t nfoundable = 1;
325 Int_t nfound = 1;
326 for (Int_t i=fLastPoint-1;i>0&&nfoundable<n; i--){
327 Int_t index = GetClusterIndex2(i);
328 if (index!=-1) nfoundable++;
329 if (index>0) nfound++;
330 }
331 if (nfoundable<n) return 0;
332 return Double_t(nfound)/Double_t(nfoundable);
333
334}
335
336
337void AliTPCseed::GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2)
338{
339 // get cluster stat. on given region
340 //
341 found = 0;
342 foundable = 0;
343 shared =0;
344 for (Int_t i=first;i<last; i++){
345 Int_t index = GetClusterIndex2(i);
346 if (index!=-1) foundable++;
6d493ea0 347 if (index&0x8000) continue;
81e97e0d 348 if (fClusterPointer[i]) {
349 found++;
350 }
351 else
352 continue;
353
354 if (fClusterPointer[i]->IsUsed(10)) {
355 shared++;
356 continue;
357 }
358 if (!plus2) continue; //take also neighborhoud
359 //
360 if ( (i>0) && fClusterPointer[i-1]){
361 if (fClusterPointer[i-1]->IsUsed(10)) {
362 shared++;
363 continue;
364 }
365 }
366 if ( fClusterPointer[i+1]){
367 if (fClusterPointer[i+1]->IsUsed(10)) {
368 shared++;
369 continue;
370 }
371 }
372
373 }
374 //if (shared>found){
375 //Error("AliTPCseed::GetClusterStatistic","problem\n");
376 //}
377}
378
379
380
381
382
383void AliTPCseed::Reset(Bool_t all)
384{
385 //
386 //
387 SetNumberOfClusters(0);
388 fNFoundable = 0;
389 SetChi2(0);
6c94f330 390 ResetCovariance(10.);
81e97e0d 391 /*
392 if (fTrackPoints){
393 for (Int_t i=0;i<8;i++){
394 delete [] fTrackPoints[i];
395 }
396 delete fTrackPoints;
397 fTrackPoints =0;
398 }
399 */
400
401 if (all){
402 for (Int_t i=0;i<200;i++) SetClusterIndex2(i,-3);
403 for (Int_t i=0;i<160;i++) fClusterPointer[i]=0;
404 }
405
406}
407
408
409void AliTPCseed::Modify(Double_t factor)
410{
411
412 //------------------------------------------------------------------
413 //This function makes a track forget its history :)
414 //------------------------------------------------------------------
415 if (factor<=0) {
6c94f330 416 ResetCovariance(10.);
81e97e0d 417 return;
418 }
6c94f330 419 ResetCovariance(factor);
420
81e97e0d 421 SetNumberOfClusters(0);
422 fNFoundable =0;
423 SetChi2(0);
424 fRemoval = 0;
425 fCurrentSigmaY2 = 0.000005;
426 fCurrentSigmaZ2 = 0.000005;
427 fNoCluster = 0;
428 //fFirstPoint = 160;
429 //fLastPoint = 0;
430}
431
432
433
434
435Int_t AliTPCseed::GetProlongation(Double_t xk, Double_t &y, Double_t & z) const
436{
437 //-----------------------------------------------------------------
438 // This function find proloncation of a track to a reference plane x=xk.
439 // doesn't change internal state of the track
440 //-----------------------------------------------------------------
441
6c94f330 442 Double_t x1=GetX(), x2=x1+(xk-x1), dx=x2-x1;
81e97e0d 443
6c94f330 444 if (TMath::Abs(GetSnp()+GetC()*dx) >= AliTPCReconstructor::GetMaxSnpTrack()) {
81e97e0d 445 return 0;
446 }
447
448 // Double_t y1=fP0, z1=fP1;
60e55aee 449 Double_t c1=GetSnp(), r1=sqrt((1.-c1)*(1.+c1));
450 Double_t c2=c1 + GetC()*dx, r2=sqrt((1.-c2)*(1.+c2));
81e97e0d 451
6c94f330 452 y = GetY();
453 z = GetZ();
81e97e0d 454 //y += dx*(c1+c2)/(r1+r2);
455 //z += dx*(c1+c2)/(c1*r2 + c2*r1)*fP3;
456
457 Double_t dy = dx*(c1+c2)/(r1+r2);
458 Double_t dz = 0;
459 //
6c94f330 460 Double_t delta = GetC()*dx*(c1+c2)/(c1*r2 + c2*r1);
81e97e0d 461 /*
462 if (TMath::Abs(delta)>0.0001){
463 dz = fP3*TMath::ASin(delta)/fP4;
464 }else{
465 dz = dx*fP3*(c1+c2)/(c1*r2 + c2*r1);
466 }
467 */
468 // dz = fP3*AliTPCFastMath::FastAsin(delta)/fP4;
6c94f330 469 dz = GetTgl()*TMath::ASin(delta)/GetC();
81e97e0d 470 //
471 y+=dy;
472 z+=dz;
473
474
475 return 1;
476}
477
478
479//_____________________________________________________________________________
af32720d 480Double_t AliTPCseed::GetPredictedChi2(const AliCluster *c) const
81e97e0d 481{
482 //-----------------------------------------------------------------
483 // This function calculates a predicted chi2 increment.
484 //-----------------------------------------------------------------
6c94f330 485 Double_t p[2]={c->GetY(), c->GetZ()};
486 Double_t cov[3]={fErrorY2, 0., fErrorZ2};
9c7b8249 487
488 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
489 if (TMath::Abs(dx)>0){
490 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
491 Float_t dy = dx*ty;
492 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
493 p[0] = c->GetY()-dy;
494 p[1] = c->GetZ()-dz;
495 }
6c94f330 496 return AliExternalTrackParam::GetPredictedChi2(p,cov);
81e97e0d 497}
498
81e97e0d 499//_________________________________________________________________________________________
500
501
502Int_t AliTPCseed::Compare(const TObject *o) const {
503 //-----------------------------------------------------------------
504 // This function compares tracks according to the sector - for given sector according z
505 //-----------------------------------------------------------------
506 AliTPCseed *t=(AliTPCseed*)o;
6c94f330 507
81e97e0d 508 if (fSort == 0){
509 if (t->fRelativeSector>fRelativeSector) return -1;
510 if (t->fRelativeSector<fRelativeSector) return 1;
511 Double_t z2 = t->GetZ();
512 Double_t z1 = GetZ();
513 if (z2>z1) return 1;
514 if (z2<z1) return -1;
515 return 0;
516 }
517 else {
518 Float_t f2 =1;
6c23ffed 519 f2 = 1-20*TMath::Sqrt(t->GetSigma1Pt2())/(t->OneOverPt()+0.0066);
81e97e0d 520 if (t->fBConstrain) f2=1.2;
521
522 Float_t f1 =1;
6c23ffed 523 f1 = 1-20*TMath::Sqrt(GetSigma1Pt2())/(OneOverPt()+0.0066);
81e97e0d 524
525 if (fBConstrain) f1=1.2;
526
527 if (t->GetNumberOfClusters()*f2 <GetNumberOfClusters()*f1) return -1;
528 else return +1;
529 }
530}
531
532
533
534
535//_____________________________________________________________________________
70e20dcf 536Bool_t AliTPCseed::Update(const AliCluster *c, Double_t chisq, Int_t index)
6c94f330 537{
81e97e0d 538 //-----------------------------------------------------------------
539 // This function associates a cluster with this track.
540 //-----------------------------------------------------------------
81e97e0d 541 Int_t n=GetNumberOfClusters();
70e20dcf 542 Int_t idx=GetClusterIndex(n); // save the current cluster index
543
544 AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
ca521f6c 545 Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
546 if (TMath::Abs(dx)>0){
547 Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
548 Float_t dy = dx*ty;
549 Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
550 cl.SetY(c->GetY()-dy);
551 cl.SetZ(c->GetZ()-dz);
552 }
553
70e20dcf 554 if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
e0e13b88 555
556 if (fCMeanSigmaY2p30<0){
557 fCMeanSigmaY2p30= c->GetSigmaY2(); //! current mean sigma Y2 - mean30%
c07cb486 558 fCMeanSigmaZ2p30= c->GetSigmaZ2(); //! current mean sigma Z2 - mean30%
559 fCMeanSigmaY2p30R = 1; //! current mean sigma Y2 - mean5%
560 fCMeanSigmaZ2p30R = 1; //! current mean sigma Z2 - mean5%
e0e13b88 561 }
562 //
563 fCMeanSigmaY2p30= 0.70*fCMeanSigmaY2p30 +0.30*c->GetSigmaY2();
c07cb486 564 fCMeanSigmaZ2p30= 0.70*fCMeanSigmaZ2p30 +0.30*c->GetSigmaZ2();
565 if (fCurrentSigmaY2>0){
566 fCMeanSigmaY2p30R = 0.7*fCMeanSigmaY2p30R +0.3*c->GetSigmaY2()/fCurrentSigmaY2;
567 fCMeanSigmaZ2p30R = 0.7*fCMeanSigmaZ2p30R +0.3*c->GetSigmaZ2()/fCurrentSigmaZ2;
568 }
e0e13b88 569
81e97e0d 570
70e20dcf 571 SetClusterIndex(n,idx); // restore the current cluster index
6c94f330 572 return kTRUE;
81e97e0d 573}
574
575
576
577//_____________________________________________________________________________
dc5cd41c 578Float_t AliTPCseed::CookdEdx(Double_t low, Double_t up,Int_t i1, Int_t i2, Bool_t /* onlyused */) {
81e97e0d 579 //-----------------------------------------------------------------
580 // This funtion calculates dE/dX within the "low" and "up" cuts.
581 //-----------------------------------------------------------------
83afd539 582 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
44a6a09e 583
83afd539 584 Int_t row0 = param->GetNRowLow();
585 Int_t row1 = row0+param->GetNRowUp1();
586 Int_t row2 = row1+param->GetNRowUp2();
44a6a09e 587 const AliTPCRecoParam * recoParam = AliTPCcalibDB::Instance()->GetTransform()->GetCurrentRecoParam();
588 Int_t useTot = 0;
589 if (recoParam) useTot = (recoParam->GetUseTotCharge())? 0:1;
83afd539 590 //
591 //
592 //
44a6a09e 593 fDEDX[0] = CookdEdxNorm(low,up,useTot ,i1 ,i2, kTRUE,kFALSE,2,0);
594 fDEDX[1] = CookdEdxNorm(low,up,useTot ,0 ,row0,kTRUE,kFALSE,2,0);
595 fDEDX[2] = CookdEdxNorm(low,up,useTot ,row0,row1,kTRUE,kFALSE,2,0);
596 fDEDX[3] = CookdEdxNorm(low,up,useTot ,row1,row2,kTRUE,kFALSE,2,0);
83afd539 597 //
44a6a09e 598 fSDEDX[0] = CookdEdxNorm(low,up,useTot ,i1 ,i2, kTRUE,kFALSE,2,1);
599 fSDEDX[1] = CookdEdxNorm(low,up,useTot ,0 ,row0,kTRUE,kFALSE,2,1);
600 fSDEDX[2] = CookdEdxNorm(low,up,useTot ,row0,row1,kTRUE,kFALSE,2,1);
601 fSDEDX[3] = CookdEdxNorm(low,up,useTot ,row1,row2,kTRUE,kFALSE,2,1);
83afd539 602 //
44a6a09e 603 fNCDEDX[0] = TMath::Nint(CookdEdxNorm(low,up,useTot ,i1 ,i2, kTRUE,kFALSE,2,2));
604 fNCDEDX[1] = TMath::Nint(CookdEdxNorm(low,up,useTot ,0 ,row0,kTRUE,kFALSE,2,2));
605 fNCDEDX[2] = TMath::Nint(CookdEdxNorm(low,up,useTot ,row0,row1,kTRUE,kFALSE,2,2));
606 fNCDEDX[3] = TMath::Nint(CookdEdxNorm(low,up,useTot ,row1,row2,kTRUE,kFALSE,2,2));
81e97e0d 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
19b00333 893void AliTPCseed::SetClusterMapBit(int ibit, Bool_t state)
894{
895 fClusterMap[ibit] = state;
896}
897Bool_t AliTPCseed::GetClusterMapBit(int ibit)
898{
899 return fClusterMap[ibit];
900}
901void AliTPCseed::SetSharedMapBit(int ibit, Bool_t state)
902{
903 fSharedMap[ibit] = state;
904}
905Bool_t AliTPCseed::GetSharedMapBit(int ibit)
906{
907 return fSharedMap[ibit];
908}
eb02f63a 909
910
0a65832b 911
912
913
8a92e133 914Float_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 915
916 //
917 // calculates dedx using the cluster
918 // low - up specify trunc mean range - default form 0-0.7
8076baa0 919 // type - 1 - max charge or 0- total charge in cluster
920 // //2- max no corr 3- total+ correction
0a65832b 921 // i1-i2 - the pad-row range used for calculation
ba5e52fb 922 // shapeNorm - kTRUE -taken from OCDB
923 //
924 // posNorm - usage of pos normalization
83afd539 925 // padNorm - pad type normalization
926 // returnVal - 0 return mean
927 // - 1 return RMS
928 // - 2 return number of clusters
929 //
0a65832b 930 // normalization parametrization taken from AliTPCClusterParam
931 //
ba5e52fb 932 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
933 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
934 if (!parcl) return 0;
935 if (!param) return 0;
83afd539 936 Int_t row0 = param->GetNRowLow();
937 Int_t row1 = row0+param->GetNRowUp1();
938
0a65832b 939 Float_t amp[160];
940 Int_t indexes[160];
941 Int_t ncl=0;
942 //
943 //
ba5e52fb 944 Float_t gainGG = 1; // gas gain factor -always enabled
945 Float_t gainPad = 1; // gain map - used always
83afd539 946 Float_t corrShape = 1; // correction due angular effect, diffusion and electron attachment
ba5e52fb 947 Float_t corrPos = 1; // local position correction - if posNorm enabled
948 Float_t corrPadType = 1; // pad type correction - if padNorm enabled
949 Float_t corrNorm = 1; // normalization factor - set Q to channel 50
950 //
951 //
952 //
4cc7ba77 953 if (AliTPCcalibDB::Instance()->GetParameters()){
ba5e52fb 954 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
4cc7ba77 955 }
956
0a65832b 957 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
4cc7ba77 958 const Float_t kedgey =3.;
0a65832b 959 //
7cd8ac3f 960 //
0a65832b 961 for (Int_t irow=i1; irow<i2; irow++){
962 AliTPCclusterMI* cluster = GetClusterPointer(irow);
963 if (!cluster) continue;
964 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
8076baa0 965 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
ba5e52fb 966 Int_t ipad= 0;
83afd539 967 if (irow>=row0) ipad=1;
968 if (irow>=row1) ipad=2;
ba5e52fb 969 //
970 //
971 //
972 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
973 if (gainMap) {
974 //
975 // Get gainPad - pad by pad calibration
976 //
d6920632 977 Float_t factor = 1;
978 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
83afd539 979 if (irow < row0) { // IROC
ba5e52fb 980 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
d6920632 981 } else { // OROC
83afd539 982 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
d6920632 983 }
ba5e52fb 984 if (factor>0.5) gainPad=factor;
7cd8ac3f 985 }
ba5e52fb 986 //
987 //do position and angular normalization
988 //
989 if (shapeNorm){
990 if (type<=1){
991 //
992 AliTPCTrackerPoint * point = GetTrackPoint(irow);
993 Float_t ty = TMath::Abs(point->GetAngleY());
83afd539 994 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
ba5e52fb 995
996 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
997 corrShape = parcl->Qnorm(ipad,type,dr,ty,tz);
998 }
0a65832b 999 }
ba5e52fb 1000
8a92e133 1001 if (posNorm>0){
8e1dcdda 1002 //
ba5e52fb 1003 // Do position normalization - relative distance to
1004 // center of pad- time bin
1005 // Work in progress
022a2383 1006 // corrPos = parcl->QnormPos(ipad,type, cluster->GetPad(),
1007 // cluster->GetTimeBin(), cluster->GetZ(),
1008 // cluster->GetSigmaY2(),cluster->GetSigmaZ2(),
1009 // cluster->GetMax(),cluster->GetQ());
8a92e133 1010 // scaled response function
1011 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1012 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1013 //
1014
022a2383 1015 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1016 Float_t ty = TMath::Abs(point->GetAngleY());
1017 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1018
1019 if (type==1) corrPos =
1020 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1021 cluster->GetTimeBin(),ty,tz,yres0,zres0,0.4);
022a2383 1022 if (type==0) corrPos =
1023 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
8a92e133 1024 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,0.4);
1025 if (posNorm==3){
1026 Float_t dr = (250.-TMath::Abs(cluster->GetZ()))/250.;
1027 Double_t signtgl = (cluster->GetZ()*point->GetAngleZ()>0)? 1:-1;
1028 Double_t p2 = TMath::Abs(TMath::Sin(TMath::ATan(ty)));
1029 Float_t corrHis = parcl->QnormHis(ipad,type,dr,p2,TMath::Abs(point->GetAngleZ())*signtgl);
1030 if (corrHis>0) corrPos*=corrHis;
1031 }
1032
8e1dcdda 1033 }
1034
ba5e52fb 1035 if (padNorm==1){
1036 //taken from OCDB
1037 if (type==0 && parcl->fQpadTnorm) corrPadType = (*parcl->fQpadTnorm)[ipad];
1038 if (type==1 && parcl->fQpadTnorm) corrPadType = (*parcl->fQpadMnorm)[ipad];
022a2383 1039
2fc9608f 1040 }
ba5e52fb 1041 if (padNorm==2){
1042 corrPadType =param->GetPadPitchLength(cluster->GetDetector(),cluster->GetRow());
1043 //use hardwired - temp fix
1044 if (type==0) corrNorm=3.;
1045 if (type==1) corrNorm=1.;
1046 }
1047 //
1048 amp[ncl]=charge;
1049 amp[ncl]/=gainGG;
1050 amp[ncl]/=gainPad;
1051 amp[ncl]/=corrShape;
1052 amp[ncl]/=corrPadType;
1053 amp[ncl]/=corrPos;
1054 amp[ncl]/=corrNorm;
1055 //
0a65832b 1056 ncl++;
1057 }
8076baa0 1058
0a65832b 1059 if (type>3) return ncl;
1060 TMath::Sort(ncl,amp, indexes, kFALSE);
1061
8076baa0 1062 if (ncl<10) return 0;
0a65832b 1063
1064 Float_t suma=0;
83afd539 1065 Float_t suma2=0;
0a65832b 1066 Float_t sumn=0;
1067 Int_t icl0=TMath::Nint(ncl*low);
1068 Int_t icl1=TMath::Nint(ncl*up);
1069 for (Int_t icl=icl0; icl<icl1;icl++){
1070 suma+=amp[indexes[icl]];
83afd539 1071 suma2+=amp[indexes[icl]]*amp[indexes[icl]];
0a65832b 1072 sumn++;
1073 }
83afd539 1074 Float_t mean =suma/sumn;
1075 Float_t rms =TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
3af3fbc4 1076 //
1077 // do time-dependent correction for pressure and temperature variations
1078 UInt_t runNumber = 1;
1079 Float_t corrTimeGain = 1;
1080 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
1081 if (trans) {
1082 runNumber = trans->GetCurrentRunNumber();
a2c3785e 1083 //AliTPCcalibDB::Instance()->SetRun(runNumber);
1084 TObjArray * timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
3af3fbc4 1085 if (timeGainSplines) {
1086 UInt_t time = trans->GetCurrentTimeStamp();
1087 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1088 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1089 if (fitMIP) {
1090 corrTimeGain = fitMIP->Eval(time);
1091 } else {
1092 if (fitFPcosmic) corrTimeGain = fitFPcosmic->Eval(time); // This value describes the ratio FP-to-MIP, hardwired for the moment
1093 }
1094 }
1095 }
1096 mean /= corrTimeGain;
1097 rms /= corrTimeGain;
1098 //
83afd539 1099 if (returnVal==1) return rms;
8a92e133 1100 if (returnVal==2) return ncl;
1101 return mean;
1102}
1103
1104Float_t AliTPCseed::CookdEdxAnalytical(Double_t low, Double_t up, Int_t type, Int_t i1, Int_t i2, Int_t returnVal){
1105
1106 //
1107 // calculates dedx using the cluster
1108 // low - up specify trunc mean range - default form 0-0.7
1109 // type - 1 - max charge or 0- total charge in cluster
1110 // //2- max no corr 3- total+ correction
1111 // i1-i2 - the pad-row range used for calculation
1112 //
1113 // posNorm - usage of pos normalization
1114 // returnVal - 0 return mean
1115 // - 1 return RMS
1116 // - 2 return number of clusters
1117 //
1118 // normalization parametrization taken from AliTPCClusterParam
1119 //
1120 AliTPCClusterParam * parcl = AliTPCcalibDB::Instance()->GetClusterParam();
1121 AliTPCParam * param = AliTPCcalibDB::Instance()->GetParameters();
1122 if (!parcl) return 0;
1123 if (!param) return 0;
1124 Int_t row0 = param->GetNRowLow();
1125 Int_t row1 = row0+param->GetNRowUp1();
1126
1127 Float_t amp[160];
1128 Int_t indexes[160];
1129 Int_t ncl=0;
1130 //
1131 //
1132 Float_t gainGG = 1; // gas gain factor -always enabled
1133 Float_t gainPad = 1; // gain map - used always
1134 Float_t corrPos = 1; // local position correction - if posNorm enabled
0cd8bb8d 1135
8a92e133 1136 //
1137 //
1138 //
1139 if (AliTPCcalibDB::Instance()->GetParameters()){
1140 gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000; //relative gas gain
1141 }
1142
1143 const Float_t ktany = TMath::Tan(TMath::DegToRad()*10);
1144 const Float_t kedgey =3.;
1145 //
1146 //
1147 for (Int_t irow=i1; irow<i2; irow++){
1148 AliTPCclusterMI* cluster = GetClusterPointer(irow);
1149 if (!cluster) continue;
1150 if (TMath::Abs(cluster->GetY())>cluster->GetX()*ktany-kedgey) continue; // edge cluster
1151 Float_t charge= (type%2)? cluster->GetMax():cluster->GetQ();
1152 Int_t ipad= 0;
1153 if (irow>=row0) ipad=1;
1154 if (irow>=row1) ipad=2;
1155 //
1156 //
1157 //
1158 AliTPCCalPad * gainMap = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1159 if (gainMap) {
1160 //
1161 // Get gainPad - pad by pad calibration
1162 //
1163 Float_t factor = 1;
1164 AliTPCCalROC * roc = gainMap->GetCalROC(cluster->GetDetector());
1165 if (irow < row0) { // IROC
1166 factor = roc->GetValue(irow, TMath::Nint(cluster->GetPad()));
1167 } else { // OROC
1168 factor = roc->GetValue(irow - row0, TMath::Nint(cluster->GetPad()));
1169 }
1170 if (factor>0.5) gainPad=factor;
1171 }
1172
1173 //
1174 // Do position normalization - relative distance to
1175 // center of pad- time bin
1176
1177 AliTPCTrackerPoint * point = GetTrackPoint(irow);
1178 Float_t ty = TMath::Abs(point->GetAngleY());
1179 Float_t tz = TMath::Abs(point->GetAngleZ()*TMath::Sqrt(1+ty*ty));
1180 Float_t yres0 = parcl->GetRMS0(0,ipad,0,0)/param->GetPadPitchWidth(cluster->GetDetector());
1181 Float_t zres0 = parcl->GetRMS0(1,ipad,0,0)/param->GetZWidth();
1182
1183 yres0 *=parcl->GetQnormCorr(ipad, type,0);
1184 zres0 *=parcl->GetQnormCorr(ipad, type,1);
1185 Float_t effLength=parcl->GetQnormCorr(ipad, type,4)*0.5;
1186 Float_t effDiff =(parcl->GetQnormCorr(ipad, type,2)+parcl->GetQnormCorr(ipad, type,3))*0.5;
1187 //
1188 if (type==1) {
1189 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1190 parcl->QmaxCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1191 cluster->GetTimeBin(),ty,tz,yres0,zres0,effLength,effDiff);
1192 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1193 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1194 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1195 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1196 //
1197 }
1198 if (type==0) {
1199 corrPos = parcl->GetQnormCorr(ipad, type,5)*
1200 parcl->QtotCorrection(cluster->GetDetector(), cluster->GetRow(),cluster->GetPad(),
1201 cluster->GetTimeBin(),ty,tz,yres0,zres0,cluster->GetQ(),2.5,effLength,effDiff);
1202
1203 Float_t drm = 0.5-TMath::Abs(cluster->GetZ()/250.);
1204 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,0)*drm);
1205 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,1)*ty*ty);
1206 corrPos*=(1+parcl->GetQnormCorr(ipad, type+2,2)*tz*tz);
1207 //
1208 }
1209
1210 //
1211 amp[ncl]=charge;
1212 amp[ncl]/=gainGG;
1213 amp[ncl]/=gainPad;
1214 amp[ncl]/=corrPos;
1215 //
1216 ncl++;
1217 }
1218
1219 if (type>3) return ncl;
1220 TMath::Sort(ncl,amp, indexes, kFALSE);
1221
1222 if (ncl<10) return 0;
1223
1224 Float_t suma=0;
1225 Float_t suma2=0;
1226 Float_t sumn=0;
1227 Int_t icl0=TMath::Nint(ncl*low);
1228 Int_t icl1=TMath::Nint(ncl*up);
1229 for (Int_t icl=icl0; icl<icl1;icl++){
1230 suma+=amp[indexes[icl]];
1231 suma2+=amp[indexes[icl]]*amp[indexes[icl]];
1232 sumn++;
1233 }
1234 Float_t mean =suma/sumn;
1235 Float_t rms =TMath::Sqrt(TMath::Abs(suma2/sumn-mean*mean));
3af3fbc4 1236 //
1237 // do time-dependent correction for pressure and temperature variations
1238 UInt_t runNumber = 1;
1239 Float_t corrTimeGain = 1;
1240 AliTPCTransform * trans = AliTPCcalibDB::Instance()->GetTransform();
1241 if (trans) {
1242 runNumber = trans->GetCurrentRunNumber();
a2c3785e 1243 //AliTPCcalibDB::Instance()->SetRun(runNumber);
1244 TObjArray * timeGainSplines = AliTPCcalibDB::Instance()->GetTimeGainSplinesRun(runNumber);
3af3fbc4 1245 if (timeGainSplines) {
1246 UInt_t time = trans->GetCurrentTimeStamp();
1247 AliSplineFit * fitMIP = (AliSplineFit *) timeGainSplines->At(0);
1248 AliSplineFit * fitFPcosmic = (AliSplineFit *) timeGainSplines->At(1);
1249 if (fitMIP) {
1250 corrTimeGain = fitMIP->Eval(time);
1251 } else {
1252 if (fitFPcosmic) corrTimeGain = fitFPcosmic->Eval(time); // This value describes the ratio FP-to-MIP, hardwired for the moment
1253 }
1254 }
1255 }
1256 mean /= corrTimeGain;
1257 rms /= corrTimeGain;
1258 //
8a92e133 1259 if (returnVal==1) return rms;
83afd539 1260 if (returnVal==2) return ncl;
1261 return mean;
0a65832b 1262}
1263
83afd539 1264
0a65832b 1265
1266
eb02f63a 1267Float_t AliTPCseed::CookShape(Int_t type){
1268 //
1269 //
1270 //
1271 //-----------------------------------------------------------------
1272 // This funtion calculates dE/dX within the "low" and "up" cuts.
1273 //-----------------------------------------------------------------
1274 Float_t means=0;
1275 Float_t meanc=0;
1276 for (Int_t i =0; i<160;i++) {
1277 AliTPCTrackerPoint * point = GetTrackPoint(i);
1278 if (point==0) continue;
1279
1280 AliTPCclusterMI * cl = fClusterPointer[i];
1281 if (cl==0) continue;
1282
1283 Float_t rsigmay = TMath::Sqrt(point->GetSigmaY());
1284 Float_t rsigmaz = TMath::Sqrt(point->GetSigmaZ());
1285 Float_t rsigma = (rsigmay+rsigmaz)*0.5;
1286 if (type==0) means+=rsigma;
1287 if (type==1) means+=rsigmay;
1288 if (type==2) means+=rsigmaz;
1289 meanc++;
1290 }
1291 Float_t mean = (meanc>0)? means/meanc:0;
1292 return mean;
1293}
87e92a27 1294
1295
1296
1297Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
1298 //
1299 // Refit the track
1300 // return value - number of used clusters
1301 //
1302 //
1303 const Int_t kMinNcl =10;
1304 AliTPCseed *track=new AliTPCseed(*seed);
1305 Int_t sector=-1;
1306 // reset covariance
1307 //
1308 Double_t covar[15];
1309 for (Int_t i=0;i<15;i++) covar[i]=0;
1310 covar[0]=10.*10.;
1311 covar[2]=10.*10.;
1312 covar[5]=10.*10./(64.*64.);
1313 covar[9]=10.*10./(64.*64.);
1314 covar[14]=1*1;
1315 //
1316
1317 Float_t xmin=1000, xmax=-10000;
1318 Int_t imin=158, imax=0;
1319 for (Int_t i=0;i<160;i++) {
1320 AliTPCclusterMI *c=track->GetClusterPointer(i);
1321 if (!c) continue;
1322 if (sector<0) sector = c->GetDetector();
1323 if (c->GetX()<xmin) xmin=c->GetX();
1324 if (c->GetX()>xmax) xmax=c->GetX();
1325 if (i<imin) imin=i;
1326 if (i>imax) imax=i;
1327 }
1328 if(imax-imin<kMinNcl) {
1329 delete track;
1330 return 0 ;
1331 }
1332 // Not succes to rotate
1333 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1334 delete track;
1335 return 0;
1336 }
1337 //
1338 //
1339 // fit from inner to outer row
1340 //
1341 AliExternalTrackParam paramIn;
1342 AliExternalTrackParam paramOut;
1343 Bool_t isOK=kTRUE;
be34cb88 1344 Int_t ncl=0;
87e92a27 1345 //
1346 //
1347 //
1348 for (Int_t i=imin; i<=imax; i++){
1349 AliTPCclusterMI *c=track->GetClusterPointer(i);
1350 if (!c) continue;
1351 // if (RejectCluster(c,track)) continue;
be34cb88 1352 sector = (c->GetDetector()%18);
1353 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1354 //continue;
1355 }
87e92a27 1356 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1357 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1358 if (!track->PropagateTo(r[0])) {
1359 isOK=kFALSE;
87e92a27 1360 }
1361 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1362 }
1363 if (!isOK) { delete track; return 0;}
1364 track->AddCovariance(covar);
1365 //
1366 //
1367 //
1368 for (Int_t i=imax; i>=imin; i--){
1369 AliTPCclusterMI *c=track->GetClusterPointer(i);
1370 if (!c) continue;
1371 //if (RejectCluster(c,track)) continue;
be34cb88 1372 sector = (c->GetDetector()%18);
1373 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1374 //continue;
1375 }
87e92a27 1376 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1377 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1378 if (!track->PropagateTo(r[0])) {
1379 isOK=kFALSE;
87e92a27 1380 }
1381 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1382 }
be34cb88 1383 //if (!isOK) { delete track; return 0;}
87e92a27 1384 paramIn = *track;
1385 track->AddCovariance(covar);
1386 //
1387 //
1388 for (Int_t i=imin; i<=imax; i++){
1389 AliTPCclusterMI *c=track->GetClusterPointer(i);
1390 if (!c) continue;
be34cb88 1391 sector = (c->GetDetector()%18);
1392 if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
1393 //continue;
1394 }
1395 ncl++;
87e92a27 1396 //if (RejectCluster(c,track)) continue;
1397 Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
1398 Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
1399 if (!track->PropagateTo(r[0])) {
1400 isOK=kFALSE;
87e92a27 1401 }
1402 if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
1403 }
be34cb88 1404 //if (!isOK) { delete track; return 0;}
87e92a27 1405 paramOut=*track;
87e92a27 1406 //
1407 //
1408 //
1409 if (parin) (*parin)=paramIn;
1410 if (parout) (*parout)=paramOut;
be34cb88 1411 return ncl;
87e92a27 1412}
1413
1414
1415
1416Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
1417 //
1418 //
1419 //
1420 return kFALSE;
1421}
3247d397 1422
1423
1424
1425
1426
1427
1428void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1429 Double_t& erry, Double_t &errz)
1430{
1431 //
1432 // Get cluster error at given position
1433 //
1434 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1435 Double_t tany,tanz;
1436 Double_t snp1=param->GetSnp();
60e55aee 1437 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1438 //
1439 Double_t tgl1=param->GetTgl();
60e55aee 1440 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1441 //
1442 Int_t padSize = 0; // short pads
1443 if (cluster->GetDetector() >= 36) {
1444 padSize = 1; // medium pads
1445 if (cluster->GetRow() > 63) padSize = 2; // long pads
1446 }
1447
1448 erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
1449 errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
1450}
1451
1452
1453void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
1454 Double_t& rmsy, Double_t &rmsz)
1455{
1456 //
1457 // Get cluster error at given position
1458 //
1459 AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
1460 Double_t tany,tanz;
1461 Double_t snp1=param->GetSnp();
60e55aee 1462 tany=snp1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1463 //
1464 Double_t tgl1=param->GetTgl();
60e55aee 1465 tanz=tgl1/TMath::Sqrt((1.-snp1)*(1.+snp1));
3247d397 1466 //
1467 Int_t padSize = 0; // short pads
1468 if (cluster->GetDetector() >= 36) {
1469 padSize = 1; // medium pads
1470 if (cluster->GetRow() > 63) padSize = 2; // long pads
1471 }
1472
1473 rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
1474 rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
1475}
ba5e52fb 1476
1477
1478
1479Double_t AliTPCseed::GetQCorrGeom(Float_t ty, Float_t tz){
1480 //Geoetrical
1481 //ty - tangent in local y direction
1482 //tz - tangent
1483 //
1484 Float_t norm=TMath::Sqrt(1+ty*ty+tz*tz);
1485 return norm;
1486}
1487
83afd539 1488Double_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 1489 //
1490 // Q normalization
1491 //
1492 // return value = Q Normalization factor
1493 // Normalization - 1 - shape factor part for full drift
1494 // 1 - electron attachment for 0 drift
1495
1496 // Input parameters:
1497 //
1498 // ipad - 0 short pad
1499 // 1 medium pad
1500 // 2 long pad
1501 //
1502 // type - 0 qmax
1503 // - 1 qtot
1504 //
1505 //z - z position (-250,250 cm)
1506 //ty - tangent in local y direction
1507 //tz - tangent
1508 //
1509
1510 AliTPCClusterParam * paramCl = AliTPCcalibDB::Instance()->GetClusterParam();
1511 AliTPCParam * paramTPC = AliTPCcalibDB::Instance()->GetParameters();
1512
1513 if (!paramCl) return 1;
1514 //
1515 Double_t dr = 250.-TMath::Abs(z);
1516 Double_t sy = paramCl->GetRMS0( 0,ipad, dr, TMath::Abs(ty));
1517 Double_t sy0= paramCl->GetRMS0(0,ipad, 250, 0);
1518 Double_t sz = paramCl->GetRMS0( 1,ipad, dr, TMath::Abs(tz));
1519 Double_t sz0= paramCl->GetRMS0(1,ipad, 250, 0);
1520
1521 Double_t sfactorMax = TMath::Sqrt(sy0*sz0/(sy*sz));
1522
1523
1524 Double_t dt = 1000000*(dr/paramTPC->GetDriftV()); //time in microsecond
1525 Double_t attProb = TMath::Exp(-paramTPC->GetAttCoef()*paramTPC->GetOxyCont()*dt);
1526 //
1527 //
1528 if (type==0) return sfactorMax*attProb;
1529
1530 return attProb;
1531
1532
1533}
1534