Bugfix in GetEta(padrow,pad,time)
[u/mrichter/AliRoot.git] / ITS / AliITSTrackerV1.cxx
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b48af428 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$Log$
55cd883f 18Revision 1.12 2001/10/19 21:32:35 nilsen
19Minor changes to remove compliation warning on gcc 2.92.2 compiler, and
20cleanded up a little bit of code.
21
b48af428 22*/
23// The purpose of this class is to permorm the ITS tracking. The
24// constructor has the task to inizialize some private members. The method
25// DoTracking is written to be called by a macro. It gets the event number,
26// the minimum and maximum order number of TPC tracks that are to be tracked
27// trough the ITS, and the file where the recpoints are registered. The
28// method Recursivetracking is a recursive function that performs the
29// tracking trough the ITS The method Intersection found the layer, ladder
30// and detector whre the intersection take place and caluclate the
31// cohordinates of this intersection. It returns an integer that is 0 if the
32// intersection has been found successfully. The two mwthods Kalmanfilter
33// and kalmanfiltervert operate the kalmanfilter without and with the vertex
34// imposition respectively. The authors thank Mariana Bondila to have help
35// them to resolve some problems. July-2000
04b80329 36
37#include <fstream.h>
13888096 38#include <TMath.h>
13888096 39#include <TBranch.h>
40#include <TVector.h>
13888096 41#include <TFile.h>
42#include <TTree.h>
cbcfa38d 43#include <TStopwatch.h>
44
13888096 45#include "TParticle.h"
46#include "AliRun.h"
47#include "AliITS.h"
04b80329 48#include "AliITSsegmentationSSD.h"
13888096 49#include "AliITSgeomSPD.h"
50#include "AliITSgeomSDD.h"
51#include "AliITSgeomSSD.h"
52#include "AliITSgeom.h"
13888096 53#include "AliITSRecPoint.h"
04b80329 54#include "stdlib.h"
13888096 55#include "AliKalmanTrack.h"
56#include "AliMagF.h"
04b80329 57#include "AliITSTrackV1.h"
58#include "AliITSIOTrack.h"
59#include "AliITSRad.h"
13888096 60#include "../TPC/AliTPCtracker.h"
13888096 61#include "AliITSTrackerV1.h"
0983ac5b 62#include "AliITSVertex.h"
13888096 63
13888096 64ClassImp(AliITSTrackerV1)
55cd883f 65 //______________________________________________________________________
66AliITSTrackerV1::AliITSTrackerV1() {
67 //Default constructor
68 fITS = 0;
69 fresult = 0;
70 frecPoints = 0;
71 fvettid = 0;
72 frl = 0;
73 fzmin = 0;
74 fzmax = 0;
75 fphimin = 0;
76 fphimax = 0;
77 fphidet = 0;
78}
b48af428 79//______________________________________________________________________
04b80329 80AliITSTrackerV1::AliITSTrackerV1(AliITS* IITTSS, Bool_t flag) {
b48af428 81 //Origin A. Badala' and G.S. Pappalardo:
82 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
83 // Class constructor. It does some initializations.
84
85 fITS = IITTSS;
86 fPtref = 0.;
87 fChi2max =0.;
88 fflagvert =flag;
89 Int_t imax = 200,jmax = 450;
90 frl = new AliITSRad(imax,jmax);
91
92 ////////// gets information on geometry /////////////////////////////
93 AliITSgeom *g1 = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom();
94 // Why not AliITS *g1 = fITS->GetITSgeom(); // ?? BSN
95 Int_t ll=1, dd=1;
96 TVector det(9);
97
98 //cout<<" nlad ed ndet \n";
99 Int_t ia;
100 for(ia=0; ia<6; ia++) {
101 fNlad[ia]=g1->GetNladders(ia+1);
102 fNdet[ia]=g1->GetNdetectors(ia+1);
103 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
104 } // end for ia
105 //getchar();
106
107 //cout<<" raggio medio = ";
108 Int_t ib;
109 for(ib=0; ib<6; ib++) {
110 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
111 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
112 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
113 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
114 fAvrad[ib]=(r1+r2)/2.;
115 //cout<<fAvrad[ib]<<" ";
116 } // end for ib
117 //cout<<"\n"; getchar();
118
119 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
120 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
121
122 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
123 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
124
125 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
126 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
127
128 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
129 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
130
131 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
132 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
133
134 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
135 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
136 //cout<<" Detx Detz\n";
137 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<
138 // fDetz[la]<<endl;
139 //getchar();
140 // allocate memory and define matrices fzmin, fzmax, fphimin and fphimax //
141 Double_t epsz=1.2;
142 Double_t epszdrift=0.05;
143
144 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
145 Int_t im1, im2, im2max;
146 for(im1=0; im1<6; im1++) {
147 im2max=fNdet[im1];
148 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
149 } // end for im1
150
151 for(im1=0; im1<6; im1++) {
152 im2max=fNdet[im1];
153 for(im2=0; im2<im2max; im2++) {
154 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
155 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
156 else
157 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
158 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
159 else
cbcfa38d 160 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
b48af428 161 if(im1==2 || im1==3) {
162 fzmin[im1][im2]-=epszdrift;
163 fzmax[im1][im2]+=epszdrift;
164 } // end if im1==2 || im1==3
165 } // end for im2
166 } // end for im1
13888096 167
b48af428 168 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
169 for(im1=0;im1<6;im1++) {
170 im2max=fNlad[im1];
171 fphimin[im1] = new Double_t[im2max];
172 fphimax[im1] = new Double_t[im2max];
173 } // end for im1
174
175 fphidet = new Double_t*[6];
176 for(im1=0; im1<6; im1++) {
177 im2max=fNlad[im1];
178 fphidet[im1] = new Double_t[im2max];
179 } // end for im1
180
181 Float_t global[3],local[3];
182 Double_t pigre=TMath::Pi();
183 Double_t xmin,ymin,xmax,ymax;
184
185 for(im1=0; im1<6; im1++) {
186 im2max=fNlad[im1];
187 for(im2=0; im2<im2max; im2++) {
188 Int_t idet=2;
189 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
190 fphidet[im1][im2] = TMath::ATan2(Double_t(det(1)),
191 Double_t(det(0)));
192 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
193 local[1]=local[2]=0.;
194 local[0]= -(fDetx[im1]);
195 if(im1==0) local[0]= (fDetx[im1]); //to take into account
196 // different reference system
197 g1->LtoG(im1+1,im2+1,idet,local,global);
198 xmax=global[0]; ymax=global[1];
199 local[0]= (fDetx[im1]);
200 if(im1==0) local[0]= -(fDetx[im1]);//take into account different
201 // reference system
202 g1->LtoG(im1+1,im2+1,idet,local,global);
203 xmin=global[0]; ymin=global[1];
204 fphimin[im1][im2]= TMath::ATan2(ymin,xmin);
205 if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
206 fphimax[im1][im2]= TMath::ATan2(ymax,xmax);
207 if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
208 } // end for im2
209 } // end for im1
210
211 ////////// gets magnetic field factor //////////////////////////////
212
213 AliMagF * fieldPointer = gAlice->Field();
214 fFieldFactor = (Double_t)fieldPointer->Factor();
215 //cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
216}
217//______________________________________________________________________
04b80329 218AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) {
b48af428 219 // Origin A. Badala' and G.S. Pappalardo:
220 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
221 // copy constructor
222
223 *fITS = *cobj.fITS;
224 *fresult = *cobj.fresult;
225 fPtref = cobj.fPtref;
226 fChi2max = cobj.fChi2max;
227 **fvettid = **cobj.fvettid;
228 fflagvert = cobj.fflagvert;
229 Int_t imax=200,jmax=450;
230 frl = new AliITSRad(imax,jmax);
231 *frl = *cobj.frl;
232 fFieldFactor = cobj.fFieldFactor;
233 Int_t i,im1,im2,im2max;
234 for(i=0; i<6; i++) {
235 fNlad[i] = cobj.fNlad[i];
236 fNdet[i] = cobj.fNdet[i];
237 fAvrad[i] = cobj.fAvrad[i];
238 fDetx[i] = cobj.fDetx[i];
239 fDetz[i] = cobj.fDetz[i];
240 } // end or i
241 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
242 for(im1=0; im1<6; im1++) {
243 im2max=fNdet[im1];
244 fzmin[im1] = new Double_t[im2max];
245 fzmax[im1] = new Double_t[im2max];
246 } // end for im1
cbcfa38d 247 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 248 for(im1=0;im1<6;im1++) {
249 im2max=fNlad[im1];
250 fphimin[im1] = new Double_t[im2max];
251 fphimax[im1] = new Double_t[im2max];
252 } // end for im1
253
254 fphidet = new Double_t*[6];
255 for(im1=0; im1<6; im1++) {
256 im2max=fNlad[im1];
257 fphidet[im1] = new Double_t[im2max];
258 } // end for im1
259 for(im1=0; im1<6; im1++) {
260 im2max=fNdet[im1];
261 for(im2=0; im2<im2max; im2++) {
262 fzmin[im1][im2]=cobj.fzmin[im1][im2];
263 fzmax[im1][im2]=cobj.fzmax[im1][im2];
264 } // end for im2
265 } // end for im1
266 for(im1=0; im1<6; im1++) {
267 im2max=fNlad[im1];
268 for(im2=0; im2<im2max; im2++) {
269 fphimin[im1][im2]=cobj.fphimin[im1][im2];
270 fphimax[im1][im2]=cobj.fphimax[im1][im2];
271 fphidet[im1][im2]=cobj.fphidet[im1][im2];
272 } // end for im2
273 } // end for im2
cbcfa38d 274}
b48af428 275//______________________________________________________________________
cbcfa38d 276AliITSTrackerV1::~AliITSTrackerV1(){
b48af428 277 // Origin A. Badala' and G.S. Pappalardo:
278 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
279 // class destructor
13888096 280
b48af428 281 //delete fTimerKalman;
282 //delete fTimerIntersection;
13888096 283}
b48af428 284//______________________________________________________________________
04b80329 285AliITSTrackerV1 &AliITSTrackerV1::operator=(AliITSTrackerV1 obj) {
b48af428 286 // Origin A. Badala' and G.S. Pappalardo:
287 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
288 // assignement operator
289
290 *fITS = *obj.fITS;
291 *fresult = *obj.fresult;
292 fPtref = obj.fPtref;
293 fChi2max = obj.fChi2max;
294 **fvettid = **obj.fvettid;
295 fflagvert = obj.fflagvert;
296 Int_t imax=200,jmax=450;
297 frl = new AliITSRad(imax,jmax);
298 *frl = *obj.frl;
299 fFieldFactor = obj.fFieldFactor;
300 Int_t i;
301 for(i=0; i<6; i++) {
302 fNlad[i] = obj.fNlad[i];
303 fNdet[i] = obj.fNdet[i];
304 fAvrad[i] = obj.fAvrad[i];
305 fDetx[i] = obj.fDetx[i];
306 fDetz[i] = obj.fDetz[i];
307 } // end for i
308 fzmin = new Double_t*[6];
309 fzmax = new Double_t*[6];
310 Int_t im1, im2, im2max;
311 for(im1=0; im1<6; im1++) {
312 im2max=fNdet[im1];
313 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
314 } // end for im1
cbcfa38d 315 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 316 for(im1=0;im1<6;im1++) {
317 im2max=fNlad[im1];
318 fphimin[im1] = new Double_t[im2max];
319 fphimax[im1] = new Double_t[im2max];
320 } // end for im1
321
322 fphidet = new Double_t*[6];
323 for(im1=0; im1<6; im1++) {
324 im2max=fNlad[im1];
325 fphidet[im1] = new Double_t[im2max];
326 } // end for im1
327 for(im1=0; im1<6; im1++) {
328 im2max=fNdet[im1];
329 for(im2=0; im2<im2max; im2++) {
330 fzmin[im1][im2]=obj.fzmin[im1][im2];
331 fzmax[im1][im2]=obj.fzmax[im1][im2];
332 } // end for im2
333 } // end for im1
334 for(im1=0; im1<6; im1++) {
335 im2max=fNlad[im1];
336 for(im2=0; im2<im2max; im2++) {
337 fphimin[im1][im2]=obj.fphimin[im1][im2];
338 fphimax[im1][im2]=obj.fphimax[im1][im2];
339 fphidet[im1][im2]=obj.fphidet[im1][im2];
340 } // end for im2
341 } // end for im1
342
343 return *this;
04b80329 344}
b48af428 345//______________________________________________________________________
346void AliITSTrackerV1::DoTracking(Int_t evNumber,Int_t minTr,Int_t maxTr,
347 TFile *file) {
348 // Origin A. Badala' and G.S. Pappalardo:
349 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
350 // The method needs the event number, the minimum and maximum order
351 // number of TPC tracks that
352 // are to be tracked trough the ITS, and the file where the recpoints
353 // are registered.
354 // The method can be called by a macro. It preforms the tracking for
355 // all good TPC tracks
356
357 printf("begin DoTracking - file %p\n",file);
358
359 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 360
b48af428 361 AliKalmanTrack *kkprov;
362 kkprov->SetConvConst(100/0.299792458/0.2/fFieldFactor);
363
364 TFile *cf=TFile::Open("AliTPCclusters.root");
365 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60");
366 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
367
368 cf->cd();
369 AliTPCtracker *tracker = new AliTPCtracker(digp,evNumber);
370
371 // Load clusters
372 tracker->LoadInnerSectors();
373 tracker->LoadOuterSectors();
374
375 // Load tracks
376 TFile *tf=TFile::Open("AliTPCtracksSorted.root"); //modificato per hbt
377 if (!tf->IsOpen()) {
378 cerr<<"Can't open AliTPCtracksSorted.root !\n";
379 return ;
380 } // end if
381 TObjArray tracks(200000);
382 char tname[100];
383 sprintf(tname,"TreeT_TPC_%d",evNumber);
384
385 TTree *tracktree=(TTree*)tf->Get(tname);
386 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
387 TBranch *tbranch=tracktree->GetBranch("tracks");
388 Int_t nentr=(Int_t)tracktree->GetEntries();
389 Int_t kk;
390
391 AliTPCtrack *ioTrackTPC=0;
392 for (kk=0; kk<nentr; kk++) {
393 ioTrackTPC=new AliTPCtrack;
394 tbranch->SetAddress(&ioTrackTPC);
395 tracktree->GetEvent(kk);
396 tracker->CookLabel(ioTrackTPC,0.1);
397 tracks.AddLast(ioTrackTPC);
398 } // end for kk
399 delete tracker;
400 tf->Close();
401
402 Int_t nt = tracks.GetEntriesFast();
403 cerr<<"Number of found tracks "<<nt<<endl;
404
405 TVector vec(5);
406 TTree *tr=gAlice->TreeR();
407 Int_t nent=(Int_t)tr->GetEntries();
408 frecPoints = fITS->RecPoints();
409
410 Int_t numbpoints;
411 Int_t totalpoints=0;
412 Int_t *np = new Int_t[nent];
413 fvettid = new Int_t* [nent];
414 Int_t mod;
415
416 for (mod=0; mod<nent; mod++) {
417 fvettid[mod]=0;
418 fITS->ResetRecPoints();
419 gAlice->TreeR()->GetEvent(mod);
420 numbpoints = frecPoints->GetEntries();
421 totalpoints+=numbpoints;
422 np[mod] = numbpoints;
423 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n";getchar();
424 fvettid[mod] = new Int_t[numbpoints];
425 Int_t ii;
426 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
427 } // end for mod
428
429 AliTPCtrack *track=0;
430
431 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
432
433 TVector vgeant(3);
434
435 TTree tracktree1("TreeT","Tree with ITS tracks");
436 AliITSIOTrack *ioTrack=0;
437 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
438
439 Int_t j;
440 for (j=minTr; j<=maxTr; j++) {
441 track=(AliTPCtrack*)tracks.UncheckedAt(j);
442 if (!track) continue;
443
444 ////// propagation to the end of TPC //////////////
445 Double_t xk=77.415;
446 track->PropagateTo(xk, 28.94, 1.204e-3); //Ne
447 xk -=0.01;
448 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
449 xk -=0.04;
450 track->PropagateTo(xk, 44.86, 1.45); //kevlar
451 xk -=2.0;
452 track->PropagateTo(xk, 41.28, 0.029); //Nomex
453 xk-=16;
454 track->PropagateTo(xk,36.2,1.98e-3); //C02
455 xk -=0.01;
456 track->PropagateTo(xk, 24.01, 2.7); //Al
457 xk -=0.01;
458 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
459 xk -=0.04;
460 track->PropagateTo(xk, 44.86, 1.45); //kevlar
461 xk -=0.5;
462 track->PropagateTo(xk, 41.28, 0.029); //Nomex
463 ////////////////////////////////////////////////////////////////////
464
465 AliITSTrackV1 trackITS(*track);
466 if(fresult){ delete fresult; fresult=0;}
467 fresult = new AliITSTrackV1(trackITS);
468
469 AliITSTrackV1 primaryTrack(trackITS);
470 vgeant=(*fresult).GetVertex();
471
472 // Definition of dv and zv for vertex constraint
473 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
474 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
13888096 475 Double_t uniform= gRandom->Uniform();
476 Double_t signdv;
477 if(uniform<=0.5) signdv=-1.;
b48af428 478 else
479 signdv=1.;
480
04b80329 481 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
b48af428 482 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
483 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
484 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
485 trackITS.SetDv(dv);
486 trackITS.SetZv(zv);
487 trackITS.SetsigmaDv(sigmaDv);
488 trackITS.SetsigmaZv(sigmaZv);
489 (*fresult).SetDv(dv);
490 (*fresult).SetZv(zv);
491 (*fresult).SetsigmaDv(sigmaDv);
492 (*fresult).SetsigmaZv(sigmaZv);
493 primaryTrack.SetDv(dv);
494 primaryTrack.SetZv(zv);
495 primaryTrack.SetsigmaDv(sigmaDv);
496 primaryTrack.SetsigmaZv(sigmaZv);
497 primaryTrack.PrimaryTrack(frl);
498 TVector d2=primaryTrack.Getd2();
499 TVector tgl2=primaryTrack.Gettgl2();
500 TVector dtgl=primaryTrack.Getdtgl();
501 trackITS.Setd2(d2); trackITS.Settgl2(tgl2);
502 trackITS.Setdtgl(dtgl);
503 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2);
504 (*fresult).Setdtgl(dtgl);
505 /*
506 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
507 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
508 */
509 TList *list= new TList();
510
511 list->AddLast(&trackITS);
512
513 fPtref=TMath::Abs( (trackITS).GetPt() );
514 if(fPtref>1.0) fChi2max=40.;
515 if(fPtref<=1.0) fChi2max=20.;
516 if(fPtref<0.4 ) fChi2max=100.;
517 if(fPtref<0.2 ) fChi2max=40.;
518 // if(fPtref<0.4 ) fChi2max=30.;
519 // if(fPtref<0.2 ) fChi2max=20.;
520 //if(fPtref<0.2 ) fChi2max=10.;
521 //if(fPtref<0.1 ) fChi2max=5.;
522 cout << "\n Pt = " << fPtref <<"\n"; //stampa
523 RecursiveTracking(list);
524 list->Delete();
525 delete list;
526
527 Int_t itot=-1;
528 TVector vecTotLabRef(18);
529 Int_t lay, k;
530 for(lay=5; lay>=0; lay--) {
531 TVector vecLabRef(3);
532 vecLabRef=(*fresult).GetLabTrack(lay);
533 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
534 for(k=0; k<3; k++){
04b80329 535 Int_t lpp=(Int_t)vecLabRef(k);
536 if(lpp>=0) {
b48af428 537 TParticle *p=(TParticle*) gAlice->Particle(lpp);
538 Int_t pcode=p->GetPdgCode();
539 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
540 } // end if
541 itot++; vecTotLabRef(itot)=vecLabRef(k);
542 if(vecLabRef(k)==0. && clustZ == 0.) vecTotLabRef(itot) =-3.;
543 } // end for k
544 } // end for lay
545 Long_t labref;
546 Int_t freq;
547 (*fresult).Search(vecTotLabRef, labref, freq);
548
549 //if(freq < 6) labref=-labref; // cinque - sei
550 if(freq < 5) labref=-labref; // cinque - sei
551 (*fresult).SetLabel(labref);
552
553 // cout<<" progressive track number = "<<j<<"\r";
554 // cout<<j<<"\r";
555 Int_t numOfCluster=(*fresult).GetNumClust();
556 cout<<" progressive track number = "<<j<<"\n"; // stampa
557 Long_t labITS=(*fresult).GetLabel();
558 cout << " ITS track label = " << labITS << "\n"; // stampa
559 Int_t lab=track->GetLabel();
560 cout << " TPC track label = " << lab <<"\n"; // stampa
561 //propagation to vertex
562
563 Double_t rbeam=3.;
564 (*fresult).Propagation(rbeam);
565 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
566 (*fresult).GetCElements(c00,
567 c10,c11,
568 c20,c21,c22,
569 c30,c31,c32,c33,
570 c40,c41,c42,c43,c44);
13888096 571
b48af428 572 Double_t pt=TMath::Abs((*fresult).GetPt());
573 Double_t dr=(*fresult).GetD();
574 Double_t z=(*fresult).GetZ();
575 Double_t tgl=(*fresult).GetTgl();
576 Double_t c=(*fresult).GetC();
577 Double_t cy=c/2.;
578 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
579 dz-=vgeant(2);
580 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
581 Double_t phi=(*fresult).Getphi();
582 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
583 Double_t duepi=2.*TMath::Pi();
584 if(phivertex>duepi) phivertex-=duepi;
585 if(phivertex<0.) phivertex+=duepi;
586 /////////////////////////////////////////////////////////////
587 Int_t idmodule,idpoint;
588 if(numOfCluster >=5) { // cinque - sei
589 //if(numOfCluster ==6) { // cinque - sei
590 AliITSIOTrack outTrack;
591 ioTrack=&outTrack;
592 ioTrack->SetStatePhi(phi);
593 ioTrack->SetStateZ(z);
594 ioTrack->SetStateD(dr);
595 ioTrack->SetStateTgl(tgl);
596 ioTrack->SetStateC(c);
597 Double_t radius=(*fresult).Getrtrack();
598 ioTrack->SetRadius(radius);
599 Int_t charge;
600 if(c>0.) charge=-1; else charge=1;
601 ioTrack->SetCharge(charge);
602 ioTrack->SetCovMatrix(c00,
603 c10,c11,
604 c20,c21,c22,
605 c30,c31,c32,c33,
606 c40,c41,c42,c43,c44);
607 Double_t px=pt*TMath::Cos(phivertex);
608 Double_t py=pt*TMath::Sin(phivertex);
609 Double_t pz=pt*tgl;
610 Double_t xtrack=dr*TMath::Sin(phivertex);
611 Double_t ytrack=dr*TMath::Cos(phivertex);
612 Double_t ztrack=dz+vgeant(2);
613 ioTrack->SetPx(px);
614 ioTrack->SetPy(py);
615 ioTrack->SetPz(pz);
616 ioTrack->SetX(xtrack);
617 ioTrack->SetY(ytrack);
618 ioTrack->SetZ(ztrack);
619 ioTrack->SetLabel(labITS);
620 ioTrack->SetTPCLabel(lab);
621 Int_t il;
622 for(il=0;il<6; il++){
623 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
624 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
625 } // end for il
626 tracktree1.Fill();
627 for (il=0;il<6;il++) {
628 idpoint=(*fresult).GetIdPoint(il);
629 idmodule=(*fresult).GetIdModule(il);
630 //*(fvettid[idmodule]+idpoint)=1;
631 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1;//modificata
632 // angela
633 ioTrack->SetIdPoint(il,idpoint);
634 ioTrack->SetIdModule(il,idmodule);
635 } // end for il
636 } // end if on numOfCluster
637 //gObjectTable->Print(); // stampa memoria
638 } // end for (int j=minTr; j<=maxTr; j++)
639 static Bool_t first=kTRUE;
640 static TFile *tfile;
641 if(first) {
642 tfile=new TFile("itstracks.root","RECREATE");
643 //cout<<"I have opened itstracks.root file "<<endl;
644 } // end if
645 first=kFALSE;
646 tfile->cd();
647 tfile->ls();
648 char hname[30];
649 sprintf(hname,"TreeT%d",evNumber);
650 tracktree1.Write(hname);
651
652 TTree *fAli=gAlice->TreeK();
653 TFile *fileAli=0;
654 if (fAli) fileAli =fAli->GetCurrentFile();
655 fileAli->cd();
656 ////////////////////////////////////////////////////////////////////
657
658 printf("delete vectors\n");
659 if(np) delete [] np;
660 if(fvettid) delete [] fvettid;
661 if(fresult) {delete fresult; fresult=0;}
04b80329 662}
b48af428 663//______________________________________________________________________
04b80329 664void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
b48af428 665 // This function perform the recursive tracking in ITS detectors
666 // reference is a pointer to the final best track
667 // Origin A. Badala' and G.S. Pappalardo:
668 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
669 // The authors thank Mariana Bondila to have help them to resolve some
670 // problems. July-2000
671
672 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9;
673 // Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
674
675 //////////////////////
676 Float_t sigmaphil[6], sigmazl[6];
677 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
678 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
679 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
680 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
681 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
682 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
683 sigmazl[0]=1e-2;
684 sigmazl[1]=1e-2;
685 sigmazl[2]=7.84e-4;
686 sigmazl[3]=7.84e-4;
687 sigmazl[4]=0.6889;
688 sigmazl[5]=0.6889;
689 ///////////////////////////////////////////////////////////
690 Int_t index;
691 AliITSgeom *g1 = fITS->GetITSgeom();
692 AliITSRecPoint *recp;
693 for(index =0; index<trackITSlist->GetSize(); index++) {
694 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
695 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
696 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
697 // cout<<"fvtrack =" <<"\n";
698 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "
699 // <<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "
700 // <<(*trackITS)(4)<<"\n";
701 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
702 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
703 // getchar();
704 Double_t chi2Now, chi2Ref;
705 Float_t numClustRef = fresult->GetNumClust();
706 if((*trackITS).GetLayer()==1 ) {
707 chi2Now = trackITS->GetChi2();
708 Float_t numClustNow = trackITS->GetNumClust();
709 if(trackITS->GetNumClust())
710 chi2Now /= (Double_t)trackITS->GetNumClust();
711 chi2Ref = fresult->GetChi2();
712 if(fresult->GetNumClust())
713 chi2Ref /= (Double_t)fresult->GetNumClust();
714 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
715 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
716 if((numClustNow == numClustRef )&&
717 (chi2Now < chi2Ref)) {
718 *fresult = *trackITS;
719 } // end if
720 continue;
721 } // end if
722
723 if(trackITS->Getfnoclust()>=2) continue;
724 Float_t numClustNow = trackITS->GetNumClust();
725 if(numClustNow) {
726 chi2Now = trackITS->GetChi2();
727
728 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
729 //cout<<" chi2Now = "<<chi2Now<<"\n";
730 // commentato il 30-7-2001
731 chi2Now/=numClustNow;
732 if(fPtref > 1.0 && chi2Now > 30.) continue;
733 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
734 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
735 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
736 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
737 if(fPtref <= 0.2 && chi2Now > 7.) continue;
738 /////////////////////////////
739 } // end if
740
741 Int_t layerInit = (*trackITS).GetLayer();
742 Int_t layernew = layerInit - 2;// -1 for new layer, -1 for matrix index
743 TList listoftrack;
744 Int_t ladp, ladm, detp,detm,ladinters,detinters;
745 Int_t layerfin=layerInit-1;
746 // cout<<"Prima di intersection \n";
747 //if(!fTimerIntersection) fTimerIntersection = new TStopwatch();
748 // timer
749 //fTimerIntersection->Continue();
750 // timer
751 Int_t outinters=Intersection(*trackITS,layerfin,ladinters,detinters);
752 //fTimerIntersection->Stop();
753 // timer
754 // cout<<" outinters = "<<outinters<<"\n";
755 // cout<<" Layer ladder detector intersection ="
756 // <<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
757 // cout << " phiinters zinters = "<<(*trackITS)(0)
758 // << " "<<(*trackITS)(1)<<"\n"; getchar();
759 if(outinters==-1) continue;
760 Int_t flaghit=0;
761 if(outinters==0){
762 TVector toucLad(9), toucDet(9);
763 Int_t lycur=layerfin;
764 ladp=ladinters+1;
765 ladm=ladinters-1;
766 if(ladm <= 0) ladm=fNlad[layerfin-1];
767 if(ladp > fNlad[layerfin-1]) ladp=1;
768 detp=detinters+1;
769 detm=detinters-1;
770 Int_t idetot=1;
771 /*
772 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
773 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
774 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
775 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
776 if(detm > 0 && detp <= fNdet[layerfin-1]) {
777 idetot=9;
778 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
779 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
780 } // end if
781 if(detm > 0 && detp > fNdet[layerfin-1]) {
782 idetot=6;
783 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
784 } // end if
785 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
786 idetot=6;
787 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
788 } // end if
789 */
f66ae545 790 Float_t epsphi=5.0, epsz=5.0;
b48af428 791 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
792 // nuova definizione idetot e toucLad e toucDet to be
793 // transformed in a method
794 // these values could be modified
795 Float_t pigre=TMath::Pi();
796 Float_t rangephi=5., rangez=5.;
797 if(layerfin==1 || layerfin ==2){
798 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
799 (*trackITS).GetSigmaphi());
800 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
801 (*trackITS).GetSigmaZ());
802 } // end if
803 if(layerfin==3 || layerfin ==4){
804 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
805 // (*trackITS).GetSigmaphi());
806 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+
807 // (*trackITS).GetSigmaZ());
808 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
809 (*trackITS).GetSigmaphi());
810 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
811 (*trackITS).GetSigmaZ());
812 } // end if
813 if(layerfin==5 || layerfin ==6){
814 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
815 (*trackITS).GetSigmaphi());
816 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
817 (*trackITS).GetSigmaZ());
818 } // end if
819 Float_t phinters, zinters;
820 phinters=(*trackITS).Getphi();
821 zinters=(*trackITS).GetZ();
822 Float_t distz = 0.0;
823 Float_t phicm, phicp, distphim, distphip;
824 phicm=phinters;
825 if(phinters>fphimax[layerfin-1][ladm]) phicm=phinters-2*pigre;
826 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm]);
827 phicp=phinters;
828 if(phinters>fphimin[layerfin-1][ladp]) phicp=phinters-2.*pigre;
829 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp]);
830 Int_t flagzmin=0;
831 Int_t flagzmax=0;
832 idetot=1;
833 toucLad(0)=ladinters; toucDet(0)=detinters;
834 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
835 if(detm>0 && rangez>=distz){
836 flagzmin=1;
837 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
838 if(rangephi>=distphim){
839 idetot++;
840 toucLad(idetot-1)=ladm;
841 toucDet(idetot-1)=detinters;
842 idetot++;
843 toucLad(idetot-1)=ladm;
844 toucDet(idetot-1)=detm;
845 } // end if
846 if(rangephi>=distphip){
847 idetot++;
848 toucLad(idetot-1)=ladp;
849 toucDet(idetot-1)=detinters;
850 idetot++;
851 toucLad(idetot-1)=ladp;
852 toucDet(idetot-1)=detm;
853 } // end if
854 } //end detm>0....
855 if(detp<=fNdet[layerfin-1])
856 distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
857 if(detp<=fNdet[layerfin-1] && rangez>=distz){
858 flagzmax=1;
859 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
860 if(rangephi>=distphim){
861 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
862 if(flagzmin == 0) {
863 idetot++;
864 toucLad(idetot-1)=ladm;
865 toucDet(idetot-1)=detinters;
866 } // end if
867 } // end if
868 if(rangephi>=distphip){
869 idetot++;
870 toucLad(idetot-1)=ladp;
871 toucDet(idetot-1)=detp;
872 if(flagzmin == 0) {
873 idetot++;
874 toucLad(idetot-1)=ladp;
875 toucDet(idetot-1)=detinters;
876 } // end if
877 } // end if
878 } //end detm<fNdet[.......
879
880 if(flagzmin == 0 && flagzmax==0){
881 if(rangephi>=distphim){
882 idetot++;
883 toucLad(idetot-1)=ladm;
884 toucDet(idetot-1)=detinters;
885 } // end if
886 if(rangephi>=distphip){
887 idetot++;
888 toucLad(idetot-1)=ladp;
889 toucDet(idetot-1)=detinters;
890 } // end if
891 } // end if
892 ////////////////////////////////////////////////////////////
893 Int_t iriv;
894 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
895 ///////////////////////////////////////////////////////
896 /*** Rec points sorted by module *****/
897 /**************************************/
898 Int_t indexmod; //mod ott
899 // AliITSRecPoint *recp;
900 indexmod = g1->GetModuleIndex(lycur,(Int_t)toucLad(iriv),
901 (Int_t)toucDet(iriv));
902 //mod ott
903 fITS->ResetRecPoints();
904 gAlice->TreeR()->GetEvent(indexmod);
905 Int_t npoints=frecPoints->GetEntries();
906 /* mod ott
907 Int_t *indlist=new Int_t[npoints+1];
908 Int_t counter=0;
909 Int_t ind;
910 for (ind=0; ind<=npoints; ind++) {
911 indlist[ind]=-1;
912 if (*(fvettid[index]+ind)==0) {
913 indlist[counter]=ind;
914 counter++;
915 } // end if
916 } // end for ind
917 ind=-1;
918 for(;;) {
919 ind++;
920 if(indlist[ind] < 0) recp=0;
921 else
922 recp = (AliITSRecPoint*)frecPoints->
923 UncheckedAt(indlist[ind]);
924 if((!recp) ) break;
925 } // end for ;;
926 */
927 ///////////////////////// new //////////////////////////
928 Int_t indnew;
929 for(indnew=0; indnew<npoints; indnew++){
930 if (*(fvettid[indexmod]+indnew)==0)
931 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
932 else
f66ae545 933 continue;
b48af428 934 ////////////////////////////////////////////////////
935 TVector cluster(3),vecclust(9);
936 vecclust(6)=vecclust(7)=vecclust(8)=-1.;
937 Double_t sigma[2];
938 // set veclust in global
939 Float_t global[3], local[3];
940 local[0]=recp->GetX();
941 local[1]=0.;
942 local[2]= recp->GetZ();
943 Int_t play = lycur;
944 Int_t plad = TMath::Nint(toucLad(iriv));
945 Int_t pdet = TMath::Nint(toucDet(iriv));
946 g1->LtoG(play,plad,pdet,local,global);
947 vecclust(0)=global[0];
948 vecclust(1)=global[1];
949 vecclust(2)=global[2];
950
951 vecclust(3) = (Float_t)recp->fTracks[0];
952 //vecclust(4) = (Float_t)indlist[ind];
953 vecclust(4) = (Float_t)indnew;
954 vecclust(5) = (Float_t)indexmod; //mod ott
955 vecclust(6) = (Float_t)recp->fTracks[0];
956 vecclust(7) = (Float_t)recp->fTracks[1];
957 vecclust(8) = (Float_t)recp->fTracks[2];
958 sigma[0] = (Double_t) recp->GetSigmaX2();
959 sigma[1] = (Double_t) recp->GetSigmaZ2();
960 //now we are in r,phi,z in global
961 cluster(0) = TMath::Sqrt(vecclust(0)*vecclust(0)+
962 vecclust(1)*vecclust(1));//r hit
963 cluster(1) = TMath::ATan2(vecclust(1),vecclust(0));
964 if(cluster(1)<0.) cluster(1)+=2.*TMath::Pi();
965 cluster(2) = vecclust(2); // z hit
966 // cout<<" layer = "<<play<<"\n";
967 // cout<<" cluster prima = "<<vecclust(0)<<" "
968 // <<vecclust(1)<<" "
969 // <<vecclust(2)<<"\n"; getchar();
970
971 Float_t sigmatotphi, sigmatotz;
972 // Float_t epsphi=5.0, epsz=5.0;
973 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
974 Double_t rTrack=(*trackITS).Getrtrack();
975 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
976 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi +
977 (*trackITS).GetSigmaphi());
978 sigmatotz=epsz*TMath::Sqrt(sigma[1] +
979 (*trackITS).GetSigmaZ());
980 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)
981 // <<" "<<cluster(1)<<" "<<sigmatotphi<<" "
982 // <<vecclust(3)<<"\n";
983 //if(vecclust(3)==481) getchar();
984 if(cluster(1)<6. && (*trackITS).Getphi()>6.)
985 cluster(1)=cluster(1)+(2.*TMath::Pi());
986 if(cluster(1)>6. && (*trackITS).Getphi()<6.)
987 cluster(1)=cluster(1)-(2.*TMath::Pi());
988 if(TMath::Abs(cluster(1)-(*trackITS).Getphi())>sigmatotphi)
989 continue;
990 // cout<<" supero sigmaphi \n";
991 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
992 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
993 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
994 (*newTrack).Correct(Double_t(cluster(0)));
995 //cout<<" cluster(2) e(*newTrack).GetZ()="<<cluster(2)<<" "
996 // << (*newTrack).GetZ()<<"\n";
997 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
998 delete newTrack;
999 continue;
1000 } // end if
1001 Double_t sigmanew[2];
1002 sigmanew[0]= sigmaphi;
1003 sigmanew[1]=sigma[1];
1004 Double_t m[2];
1005 m[0]=cluster(1);
1006 m[1]=cluster(2);
1007 // Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
1008 // cout<<" chi2pred = "<<chi2pred<<"\n";
1009 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
1010 if(iriv == 0) flaghit=1;
1011 (*newTrack).AddMS(frl); // add the multiple scattering
1012 //matrix to the covariance matrix
1013 (*newTrack).AddEL(frl,1.,0);
1014
1015 //if(!fTimerKalman) fTimerKalman = new TStopwatch();//timer
1016 //fTimerKalman->Continue(); // timer
1017 if(fflagvert){
1018 KalmanFilterVert(newTrack,cluster,sigmanew);
1019 //KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
1020 }else{
1021 KalmanFilter(newTrack,cluster,sigmanew);
1022 } // end if
1023 //fTimerKalman->Stop(); // timer
1024 (*newTrack).PutCluster(layernew, vecclust);
1025 newTrack->AddClustInTrack();
1026 listoftrack.AddLast(newTrack);
1027 } // end for indnew
1028 // delete [] indlist; //mod ott
1029 } // end of for on detectors (iriv)
1030 }//end if(outinters==0)
1031
1032 if(flaghit==0 || outinters==-2) {
1033 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
1034 (*newTrack).Setfnoclust();
1035 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
1036 (*newTrack).AddMS(frl); // add the multiple scattering matrix
1037 // to the covariance matrix
1038 (*newTrack).AddEL(frl,1.,0);
1039 listoftrack.AddLast(newTrack);
1040 } // end if
1041
1042 //gObjectTable->Print(); // stampa memoria
04b80329 1043
b48af428 1044 RecursiveTracking(&listoftrack);
1045 listoftrack.Delete();
1046 } // end of for on tracks (index)
04b80329 1047
b48af428 1048 //gObjectTable->Print(); // stampa memoria
13888096 1049}
b48af428 1050//______________________________________________________________________
1051Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track,Int_t layer,
1052 Int_t &ladder,Int_t &detector) {
1053 // Origin A. Badala' and G.S. Pappalardo
1054 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1055 // Found the intersection and the detector
1056
1057 Double_t rk=fAvrad[layer-1];
1058 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1059 track.Propagation(rk);
1060 Double_t zinters=track.GetZ();
1061 Double_t phinters=track.Getphi();
1062 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
1063
1064 TVector det(9);
1065 TVector listDet(2);
1066 TVector distZCenter(2);
1067
1068 Int_t iz=0;
1069 Int_t iD;
1070 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
1071 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1072 if(iz>1) {
1073 cout<< " Errore su iz in Intersection \n";
1074 getchar();
1075 }else {
1076 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2));
1077 iz++;
1078 } // end if
1079 } // end if
1080 } // end for iD
1081
1082 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1083 detector=Int_t (listDet(0));
1084 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
1085
1086 TVector listLad(2);
1087 TVector distPhiCenter(2);
1088 Int_t ip=0;
1089 Double_t pigre=TMath::Pi();
1090 Int_t iLd;
1091 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1092 Double_t phimin=fphimin[layer-1][iLd-1];
1093 Double_t phimax=fphimax[layer-1][iLd-1];
1094 Double_t phidet=fphidet[layer-1][iLd-1];
1095 Double_t phiconfr=phinters;
1096 if(phimin>phimax) {
1097 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n";
1098 // getchar();}
1099 phimin-=(2.*pigre);
1100 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1101 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
1102 } // end if
1103 if(phiconfr>phimin && phiconfr<= phimax) {
1104 if(ip>1) {
1105 cout<< " Errore su ip in Intersection \n"; getchar();
1106 }else {
1107 listLad(ip)= iLd;
1108 distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1109 } // end if
1110 } // end if
1111 } // end for iLd
1112 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1113 ladder=Int_t (listLad(0));
1114 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
1115 return 0;
1116}
1117//______________________________________________________________________
1118void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,
1119 Double_t sigma[2]){
1120 //Origin A. Badala' and G.S. Pappalardo:
1121 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1122 // Kalman filter without vertex constraint
1123 ////// Evaluation of the measurement vector ////////////////////////
1124 Double_t m[2];
1125 Double_t rk,phik,zk;
1126 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1127 m[0]=phik; m[1]=zk;
1128 //////////////////////// Evaluation of the error matrix V /////////
1129 Double_t v00=sigma[0];
1130 Double_t v11=sigma[1];
1131 ////////////////////////////////////////////////////////////////////
1132 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,
1133 cin32,cin42,cin33,cin43,cin44;
1134
1135 newTrack->GetCElements(cin00,
1136 cin10,cin11,
1137 cin20,cin21,cin22,
1138 cin30,cin31,cin32,cin33,
1139 cin40,cin41,cin42,cin43,cin44); //get C matrix
1140 Double_t rold00=cin00+v00;
1141 Double_t rold10=cin10;
1142 Double_t rold11=cin11+v11;
1143 ////////////////////// R matrix inversion /////////////////////////
1144 Double_t det=rold00*rold11-rold10*rold10;
1145 Double_t r00=rold11/det;
1146 Double_t r10=-rold10/det;
1147 Double_t r11=rold00/det;
1148 ////////////////////////////////////////////////////////////////////
1149 Double_t k00=cin00*r00+cin10*r10;
1150 Double_t k01=cin00*r10+cin10*r11;
1151 Double_t k10=cin10*r00+cin11*r10;
1152 Double_t k11=cin10*r10+cin11*r11;
1153 Double_t k20=cin20*r00+cin21*r10;
1154 Double_t k21=cin20*r10+cin21*r11;
1155 Double_t k30=cin30*r00+cin31*r10;
1156 Double_t k31=cin30*r10+cin31*r11;
1157 Double_t k40=cin40*r00+cin41*r10;
1158 Double_t k41=cin40*r10+cin41*r11;
1159 Double_t x0,x1,x2,x3,x4;
1160 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1161 Double_t savex0=x0, savex1=x1;
1162 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1163 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1164 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1165 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1166 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1167 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1168 c00=cin00-k00*cin00-k01*cin10;
1169 c10=cin10-k00*cin10-k01*cin11;
1170 c20=cin20-k00*cin20-k01*cin21;
1171 c30=cin30-k00*cin30-k01*cin31;
1172 c40=cin40-k00*cin40-k01*cin41;
1173 c11=cin11-k10*cin10-k11*cin11;
1174 c21=cin21-k10*cin20-k11*cin21;
1175 c31=cin31-k10*cin30-k11*cin31;
1176 c41=cin41-k10*cin40-k11*cin41;
1177 c22=cin22-k20*cin20-k21*cin21;
1178 c32=cin32-k20*cin30-k21*cin31;
1179 c42=cin42-k20*cin40-k21*cin41;
1180 c33=cin33-k30*cin30-k31*cin31;
1181 c43=cin43-k30*cin40-k31*cin41;
1182 c44=cin44-k40*cin40-k41*cin41;
1183 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1184 newTrack->PutCElements(c00,
1185 c10,c11,
1186 c20,c21,c22,
1187 c30,c31,c32,c33,
1188 c40,c41,c42,c43,c44); // put in track the
1189 // new cov matrix
1190 Double_t vmcold00=v00-c00;
1191 Double_t vmcold10=-c10;
1192 Double_t vmcold11=v11-c11;
1193 ////////////////////// Matrix vmc inversion ///////////////////////
1194 det=vmcold00*vmcold11-vmcold10*vmcold10;
1195 Double_t vmc00=vmcold11/det;
1196 Double_t vmc10=-vmcold10/det;
1197 Double_t vmc11=vmcold00/det;
1198 ////////////////////////////////////////////////////////////////////
1199 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1200 (m[1]-x1)*vmc11*(m[1]-x1);
04b80329 1201 newTrack->SetChi2(newTrack->GetChi2()+chi2);
b48af428 1202}
1203//----------------------------------------------------------------------
1204//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1205// TVector &cluster,Double_t sigma[2]){
1206void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1207 TVector &cluster,Double_t sigma[2]
1208 /*, Double_t chi2pred*/){
1209 //Origin A. Badala' and G.S. Pappalardo:
1210 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1211 // Kalman filter with vertex constraint
1212 ///////////////////// Evaluation of the measurement vector m ////////
1213 Double_t m[4];
1214 Double_t rk,phik,zk;
1215 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1216 m[0]=phik; m[1]=zk;
1217 Double_t cc=(*newTrack).GetC();
1218 Double_t zv=(*newTrack).GetZv();
1219 Double_t dv=(*newTrack).GetDv();
1220 Double_t cy=cc/2.;
1221 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1222 m[2]=dv; m[3]=tgl;
1223 /////////////////////// Evaluation of the error matrix V //////////
1224 Int_t layer=newTrack->GetLayer();
1225 Double_t v00=sigma[0];
1226 Double_t v11=sigma[1];
1227 Double_t v31=sigma[1]/rk;
1228 Double_t sigmaDv=newTrack->GetsigmaDv();
1229 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1230 Double_t v32=newTrack->Getdtgl(layer-1);
1231 Double_t sigmaZv=newTrack->GetsigmaZv();
1232 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+newTrack->Gettgl2(layer-1);
1233 //////////////////////////////////////////////////////////////////
1234 Double_t cin00,cin10,cin11,cin20,cin21,cin22,
1235 cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1236 newTrack->GetCElements(cin00,
1237 cin10,cin11,
1238 cin20,cin21,cin22,
1239 cin30,cin31,cin32,cin33,
1240 cin40,cin41,cin42,cin43,cin44); //get C matrix
1241 Double_t r[4][4];
1242 r[0][0]=cin00+v00;
1243 r[1][0]=cin10;
1244 r[2][0]=cin20;
1245 r[3][0]=cin30;
1246 r[1][1]=cin11+v11;
1247 r[2][1]=cin21;
1248 r[3][1]=cin31+sigma[1]/rk;
1249 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1250 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1251 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+
1252 newTrack->Gettgl2(layer-1);
1253 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0];
1254 r[1][2]=r[2][1]; r[1][3]=r[3][1]; r[2][3]=r[3][2];
1255 ///////////////////// Matrix R inversion //////////////////////////
1256 const Int_t kn=4;
1257 Double_t big, hold;
1258 Double_t d=1.;
1259 Int_t ll[kn],mm[kn];
1260 Int_t i,j,k;
1261
1262 for(k=0; k<kn; k++) {
1263 ll[k]=k;
1264 mm[k]=k;
1265 big=r[k][k];
1266 for(j=k; j<kn ; j++) {
1267 for (i=j; i<kn; i++) {
1268 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) {
1269 big=r[i][j];
1270 ll[k]=i;
1271 mm[k]=j;
1272 } // end if
1273 } // end for i
1274 } // end for j
1275 //
1276 j= ll[k];
1277 if(j > k) {
1278 for(i=0; i<kn; i++) {
1279 hold=-r[k][i];
1280 r[k][i]=r[j][i];
1281 r[j][i]=hold;
1282 } // end for i
1283 }// end if
1284 //
1285 i=mm[k];
1286 if(i > k ) {
1287 for(j=0; j<kn; j++) {
1288 hold=-r[j][k];
1289 r[j][k]=r[j][i];
1290 r[j][i]=hold;
1291 } // end for j
1292 } // end if
1293 //
1294 if(!big) {
1295 d=0.;
1296 cout << "Singular matrix\n";
1297 } // end if
1298 for(i=0; i<kn; i++) {
1299 if(i == k) { continue; }
1300 r[i][k]=r[i][k]/(-big);
1301 } // end for i
1302 //
1303 for(i=0; i<kn; i++) {
1304 hold=r[i][k];
1305 for(j=0; j<kn; j++) {
1306 if(i == k || j == k) continue;
1307 r[i][j]=hold*r[k][j]+r[i][j];
1308 } // end for j
1309 } // end of ri
1310 //
1311 for(j=0; j<kn; j++) {
1312 if(j == k) continue;
1313 r[k][j]=r[k][j]/big;
1314 } // end for j
1315 //
1316 d=d*big;
1317 //
1318 r[k][k]=1./big;
1319 } // end for k
1320 //
1321 for(k=kn-1; k>=0; k--) {
1322 i=ll[k];
1323 if(i > k) {
1324 for (j=0; j<kn; j++) {
1325 hold=r[j][k];
1326 r[j][k]=-r[j][i];
1327 r[j][i]=hold;
1328 } // end for j
1329 } // end if i
1330 j=mm[k];
1331 if(j > k) {
1332 for (i=0; i<kn; i++) {
1333 hold=r[k][i];
1334 r[k][i]=-r[j][i];
1335 r[j][i]=hold;
1336 } // end for i
1337 } // end if
1338 } // end for k
1339 ////////////////////////////////////////////////////////////////////
1340 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1341 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1342 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1343 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1344 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1345 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1346 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1347 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1348 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1349 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1350 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1351 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1352 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1353 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1354 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1355 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1356 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1357 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1358 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1359 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1360
1361 Double_t x0,x1,x2,x3,x4;
1362 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1363 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1364 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1365 k03*(m[3]-savex3);
1366 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1367 k13*(m[3]-savex3);
1368 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1369 k23*(m[3]-savex3);
1370 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1371 k33*(m[3]-savex3);
1372 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1373 k43*(m[3]-savex3);
1374 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1375 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1376 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1377 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1378 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1379 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1380 c11=cin11-k10*cin10-k11*cin11-k12*cin21-k13*cin31;
1381 c21=cin21-k10*cin20-k11*cin21-k12*cin22-k13*cin32;
1382 c31=cin31-k10*cin30-k11*cin31-k12*cin32-k13*cin33;
1383 c41=cin41-k10*cin40-k11*cin41-k12*cin42-k13*cin43;
1384 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1385 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1386 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1387 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1388 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1389 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1390
1391 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1392 newTrack->PutCElements(c00,
1393 c10,c11,
1394 c20,c21,c22,
1395 c30,c31,c32,c33,
1396 c40,c41,c42,c43,c44); // put in track the
1397 // new cov matrix
1398 Double_t vmc[4][4];
1399 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1400 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1401 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1402 vmc[3][3]=v33-c33;
1403 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1404 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1405 vmc[2][3]=vmc[3][2];
1406 /////////////////////// vmc matrix inversion ///////////////////////
1407 d=1.;
1408 for(k=0; k<kn; k++) {
1409 ll[k]=k;
1410 mm[k]=k;
1411 big=vmc[k][k];
1412 for(j=k; j<kn ; j++) {
1413 for (i=j; i<kn; i++) {
1414 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) {
1415 big=vmc[i][j];
1416 ll[k]=i;
1417 mm[k]=j;
1418 } // end if
1419 } // end for i
1420 } // end for j
1421 //
1422 j= ll[k];
1423 if(j > k) {
1424 for(i=0; i<kn; i++) {
1425 hold=-vmc[k][i];
1426 vmc[k][i]=vmc[j][i];
1427 vmc[j][i]=hold;
1428 } // end for i
1429 } // end if
1430 //
1431 i=mm[k];
1432 if(i > k ) {
1433 for(j=0; j<kn; j++) {
1434 hold=-vmc[j][k];
1435 vmc[j][k]=vmc[j][i];
1436 vmc[j][i]=hold;
1437 } // end for j
1438 } // end if
1439 //
1440 if(!big) {
1441 d=0.;
1442 cout << "Singular matrix\n";
1443 } // end if
1444 for(i=0; i<kn; i++) {
1445 if(i == k) continue;
1446 vmc[i][k]=vmc[i][k]/(-big);
1447 } // end for i
1448 //
1449 for(i=0; i<kn; i++) {
1450 hold=vmc[i][k];
1451 for(j=0; j<kn; j++) {
1452 if(i == k || j == k) continue;
1453 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1454 } // end for j
1455 } // end for i
1456 //
1457 for(j=0; j<kn; j++) {
1458 if(j == k) continue;
1459 vmc[k][j]=vmc[k][j]/big;
1460 } // end for j
1461 //
1462 d=d*big;
1463 //
1464 vmc[k][k]=1./big;
1465 } // end for k
1466 //
1467 for(k=kn-1; k>=0; k--) {
1468 i=ll[k];
1469 if(i > k) {
1470 for (j=0; j<kn; j++) {
1471 hold=vmc[j][k];
1472 vmc[j][k]=-vmc[j][i];
1473 vmc[j][i]=hold;
1474 } // end for j
1475 } // end if i>k
1476 j=mm[k];
1477 if(j > k) {
1478 for (i=0; i<kn; i++) {
1479 hold=vmc[k][i];
1480 vmc[k][i]=-vmc[j][i];
1481 vmc[j][i]=hold;
1482 } // end for i
1483 } // end if j>k
1484 } // end for k
1485 ////////////////////////////////////////////////////////////////////
1486 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1487 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) )+
1488 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1489 2.*vmc[3][1]*(m[3]-x3) ) +
1490 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
1491 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1492 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
1493 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1494 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
1495}