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New macro to display tracks reconstructed from tracking V1 on top of the ITS detailed...
[u/mrichter/AliRoot.git] / ITS / AliITSTrackerV1.cxx
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04b80329 1//The purpose of this class is to permorm the ITS tracking.
2//The constructor has the task to inizialize some private members.
3//The method DoTracking is written to be called by a macro. It gets the event number, the minimum and maximum
4//order number of TPC tracks that are to be tracked trough the ITS, and the file where the recpoints are
5//registered.
6//The method Recursivetracking is a recursive function that performs the tracking trough the ITS
7//The method Intersection found the layer, ladder and detector whre the intersection take place and caluclate
8//the cohordinates of this intersection. It returns an integer that is 0 if the intersection has been found
9//successfully.
10//The two mwthods Kalmanfilter and kalmanfiltervert operate the kalmanfilter without and with the vertex
11//imposition respectively.
12//The authors thank Mariana Bondila to have help them to resolve some problems. July-2000
13
14
15#include <fstream.h>
13888096 16#include <TMath.h>
13888096 17#include <TBranch.h>
18#include <TVector.h>
13888096 19#include <TFile.h>
20#include <TTree.h>
cbcfa38d 21#include <TStopwatch.h>
22
13888096 23#include "TParticle.h"
24#include "AliRun.h"
25#include "AliITS.h"
04b80329 26#include "AliITSsegmentationSSD.h"
13888096 27#include "AliITSgeomSPD.h"
28#include "AliITSgeomSDD.h"
29#include "AliITSgeomSSD.h"
30#include "AliITSgeom.h"
13888096 31#include "AliITSRecPoint.h"
04b80329 32#include "stdlib.h"
13888096 33#include "AliKalmanTrack.h"
34#include "AliMagF.h"
04b80329 35#include "AliITSTrackV1.h"
36#include "AliITSIOTrack.h"
37#include "AliITSRad.h"
13888096 38#include "../TPC/AliTPCtracker.h"
13888096 39#include "AliITSTrackerV1.h"
0983ac5b 40#include "AliITSVertex.h"
13888096 41
13888096 42ClassImp(AliITSTrackerV1)
43
44
45//________________________________________________________________
46
04b80329 47AliITSTrackerV1::AliITSTrackerV1(AliITS* IITTSS, Bool_t flag) {
48//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
49// Class constructor. It does some initializations.
13888096 50
04b80329 51 fITS = IITTSS;
52 fPtref=0.;
f66ae545 53 fChi2max=0.;
04b80329 54 fflagvert=flag;
55 Int_t imax=200,jmax=450;
56 frl = new AliITSRad(imax,jmax);
13888096 57
a3894645 58/////////////////////////////////////// gets information on geometry ///////////////////////////////////
59
60 AliITSgeom *g1 = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom();
61
62 Int_t ll=1, dd=1;
63 TVector det(9);
64
65 //cout<<" nlad ed ndet \n";
cbcfa38d 66 Int_t ia;
a3894645 67 for(ia=0; ia<6; ia++) {
68 fNlad[ia]=g1->GetNladders(ia+1);
69 fNdet[ia]=g1->GetNdetectors(ia+1);
70 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
71 }
72 //getchar();
73
74 //cout<<" raggio medio = ";
cbcfa38d 75 Int_t ib;
a3894645 76 for(ib=0; ib<6; ib++) {
77 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
cbcfa38d 78 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
79 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
80 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
81 fAvrad[ib]=(r1+r2)/2.;
a3894645 82 //cout<<fAvrad[ib]<<" ";
83 }
84 //cout<<"\n"; getchar();
85
86 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
87 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
88
89 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
90 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
91
92 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
93 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
94
95 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
96 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
97
98 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
99 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
100
101 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
102 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
103
104 //cout<<" Detx Detz\n";
105 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<fDetz[la]<<"\n";
106 //getchar();
107//////////////////////////////////////////////////////////////////////////////////////////////////////////
108
cbcfa38d 109////////////////// allocate memory and define matrices fzmin, fzmax, fphimin and fphimax /////////////////////////////////
110
111 Double_t epsz=1.2;
112 Double_t epszdrift=0.05;
113
114 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
115 Int_t im1, im2, im2max;
116 for(im1=0; im1<6; im1++) {
117 im2max=fNdet[im1];
118 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
119 }
120
121 for(im1=0; im1<6; im1++) {
122 im2max=fNdet[im1];
123 for(im2=0; im2<im2max; im2++) {
124 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
125 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
126 else
127 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
128 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
129 else
130 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
131 if(im1==2 || im1==3) {fzmin[im1][im2]-=epszdrift; fzmax[im1][im2]+=epszdrift;}
132 }
133 }
134
135 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
136 for(im1=0;im1<6;im1++) {
137 im2max=fNlad[im1];
138 fphimin[im1] = new Double_t[im2max]; fphimax[im1] = new Double_t[im2max];
139 }
140
141 fphidet = new Double_t*[6];
142 for(im1=0; im1<6; im1++) {
143 im2max=fNlad[im1];
144 fphidet[im1] = new Double_t[im2max];
145 }
146
147 Float_t global[3],local[3];
148 Double_t pigre=TMath::Pi();
149 Double_t xmin,ymin,xmax,ymax;
150
151 for(im1=0; im1<6; im1++) {
152 im2max=fNlad[im1];
153 for(im2=0; im2<im2max; im2++) {
154 Int_t idet=2;
155 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
156 fphidet[im1][im2]= TMath::ATan2(Double_t(det(1)),Double_t(det(0)));
157 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
158 local[1]=local[2]=0.;
159 local[0]= -(fDetx[im1]);
160 if(im1==0) local[0]= (fDetx[im1]); //to take into account different reference system
161 g1->LtoG(im1+1,im2+1,idet,local,global);
162 xmax=global[0]; ymax=global[1];
163 local[0]= (fDetx[im1]);
164 if(im1==0) local[0]= -(fDetx[im1]); //take into account different reference system
165 g1->LtoG(im1+1,im2+1,idet,local,global);
166 xmin=global[0]; ymin=global[1];
167 fphimin[im1][im2]= TMath::ATan2(ymin,xmin); if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
168 fphimax[im1][im2]= TMath::ATan2(ymax,xmax); if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
169 }
170 }
171
172//////////////////////////////////////////////////////////////////////////////////////////////////////////
173
a3894645 174//////////////////////////////////////// gets magnetic field factor ////////////////////////////////
175
176 AliMagF * fieldPointer = gAlice->Field();
177 fFieldFactor = (Double_t)fieldPointer->Factor();
178 //cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
179
180/////////////////////////////////////////////////////////////////////////////////////////////////////////
181
04b80329 182}
13888096 183
04b80329 184AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) {
185//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
186// copy constructor
13888096 187
cbcfa38d 188 *fITS = *cobj.fITS;
189 *fresult = *cobj.fresult;
190 fPtref = cobj.fPtref;
f66ae545 191 fChi2max = cobj.fChi2max;
cbcfa38d 192 **fvettid = **cobj.fvettid;
193 fflagvert = cobj.fflagvert;
194 Int_t imax=200,jmax=450;
195 frl = new AliITSRad(imax,jmax);
196 *frl = *cobj.frl;
197 fFieldFactor = cobj.fFieldFactor;
198 Int_t i,im1,im2,im2max;
199 for(i=0; i<6; i++) {
200 fNlad[i] = cobj.fNlad[i];
201 fNdet[i] = cobj.fNdet[i];
202 fAvrad[i] = cobj.fAvrad[i];
203 fDetx[i] = cobj.fDetx[i];
204 fDetz[i] = cobj.fDetz[i];
205 }
206 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
207 for(im1=0; im1<6; im1++) {
208 im2max=fNdet[im1];
209 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
210 }
211 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
212 for(im1=0;im1<6;im1++) {
213 im2max=fNlad[im1];
214 fphimin[im1] = new Double_t[im2max]; fphimax[im1] = new Double_t[im2max];
215 }
216
217 fphidet = new Double_t*[6];
218 for(im1=0; im1<6; im1++) {
219 im2max=fNlad[im1];
220 fphidet[im1] = new Double_t[im2max];
221 }
222 for(im1=0; im1<6; im1++) {
223 im2max=fNdet[im1];
224 for(im2=0; im2<im2max; im2++) {
225 fzmin[im1][im2]=cobj.fzmin[im1][im2];
226 fzmax[im1][im2]=cobj.fzmax[im1][im2];
227 }
228 }
229 for(im1=0; im1<6; im1++) {
230 im2max=fNlad[im1];
231 for(im2=0; im2<im2max; im2++) {
232 fphimin[im1][im2]=cobj.fphimin[im1][im2];
233 fphimax[im1][im2]=cobj.fphimax[im1][im2];
234 fphidet[im1][im2]=cobj.fphidet[im1][im2];
235 }
236 }
237}
238
239AliITSTrackerV1::~AliITSTrackerV1(){
240//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
241// class destructor
242
243 //cout<<" CpuTimeKalman = "<<fTimerKalman->CpuTime()<<"\n";
244 //cout<<" CpuTimeIntersection = "<<fTimerIntersection->CpuTime()<<"\n";
245 //cout<<" CpuTimeIntersection = "<<TStopwatch::GetCPUTime()<<"\n";
246 //delete fTimerKalman;
247 //delete fTimerIntersection;
13888096 248
249}
250
cbcfa38d 251
04b80329 252AliITSTrackerV1 &AliITSTrackerV1::operator=(AliITSTrackerV1 obj) {
253//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
254// assignement operator
13888096 255
cbcfa38d 256 *fITS = *obj.fITS;
257 *fresult = *obj.fresult;
258 fPtref = obj.fPtref;
f66ae545 259 fChi2max = obj.fChi2max;
cbcfa38d 260 **fvettid = **obj.fvettid;
261 fflagvert = obj.fflagvert;
262 Int_t imax=200,jmax=450;
263 frl = new AliITSRad(imax,jmax);
264 *frl = *obj.frl;
265 fFieldFactor = obj.fFieldFactor;
266 Int_t i;
267 for(i=0; i<6; i++) {
268 fNlad[i] = obj.fNlad[i];
269 fNdet[i] = obj.fNdet[i];
270 fAvrad[i] = obj.fAvrad[i];
271 fDetx[i] = obj.fDetx[i];
272 fDetz[i] = obj.fDetz[i];
273 }
274 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
275 Int_t im1, im2, im2max;
276 for(im1=0; im1<6; im1++) {
277 im2max=fNdet[im1];
278 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
279 }
280 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
281 for(im1=0;im1<6;im1++) {
282 im2max=fNlad[im1];
283 fphimin[im1] = new Double_t[im2max]; fphimax[im1] = new Double_t[im2max];
284 }
285
286 fphidet = new Double_t*[6];
287 for(im1=0; im1<6; im1++) {
288 im2max=fNlad[im1];
289 fphidet[im1] = new Double_t[im2max];
290 }
291 for(im1=0; im1<6; im1++) {
292 im2max=fNdet[im1];
293 for(im2=0; im2<im2max; im2++) {
294 fzmin[im1][im2]=obj.fzmin[im1][im2];
295 fzmax[im1][im2]=obj.fzmax[im1][im2];
296 }
297 }
298 for(im1=0; im1<6; im1++) {
299 im2max=fNlad[im1];
300 for(im2=0; im2<im2max; im2++) {
301 fphimin[im1][im2]=obj.fphimin[im1][im2];
302 fphimax[im1][im2]=obj.fphimax[im1][im2];
303 fphidet[im1][im2]=obj.fphidet[im1][im2];
304 }
305 }
13888096 306
04b80329 307 return *this;
308
309}
13888096 310
311
04b80329 312//________________________________________________________________
13888096 313
13888096 314
04b80329 315void AliITSTrackerV1::DoTracking(Int_t evNumber, Int_t minTr, Int_t maxTr, TFile *file) {
316//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
317//The method needs the event number, the minimum and maximum order number of TPC tracks that
318//are to be tracked trough the ITS, and the file where the recpoints are registered.
319//The method can be called by a macro. It preforms the tracking for all good TPC tracks
583731c7 320
583731c7 321
13888096 322 printf("begin DoTracking - file %p\n",file);
13888096 323
0983ac5b 324 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 325
a3894645 326 AliKalmanTrack *kkprov;
327 kkprov->SetConvConst(100/0.299792458/0.2/fFieldFactor);
13888096 328
04b80329 329
13888096 330 TFile *cf=TFile::Open("AliTPCclusters.root");
331 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60");
332 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
333
0983ac5b 334 cf->cd();
335 AliTPCtracker *tracker = new AliTPCtracker(digp,evNumber);
04b80329 336
13888096 337 // Load clusters
338 tracker->LoadInnerSectors();
339 tracker->LoadOuterSectors();
340
13888096 341
342// Load tracks
0983ac5b 343 TFile *tf=TFile::Open("AliTPCtracksSorted.root"); //modificato per hbt
344 if (!tf->IsOpen()) {cerr<<"Can't open AliTPCtracksSorted.root !\n"; return ;}
13888096 345 TObjArray tracks(200000);
f66ae545 346 char tname[100];
347 sprintf(tname,"TreeT_TPC_%d",evNumber);
0983ac5b 348
f66ae545 349 TTree *tracktree=(TTree*)tf->Get(tname);
13888096 350 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
351 TBranch *tbranch=tracktree->GetBranch("tracks");
352 Int_t nentr=(Int_t)tracktree->GetEntries();
353 Int_t kk;
04b80329 354
355 AliTPCtrack *ioTrackTPC=0;
13888096 356 for (kk=0; kk<nentr; kk++) {
04b80329 357 ioTrackTPC=new AliTPCtrack;
358 tbranch->SetAddress(&ioTrackTPC);
13888096 359 tracktree->GetEvent(kk);
04b80329 360 tracker->CookLabel(ioTrackTPC,0.1);
361 tracks.AddLast(ioTrackTPC);
13888096 362 }
363 delete tracker;
364 tf->Close();
365
366
367 Int_t nt = tracks.GetEntriesFast();
368 cerr<<"Number of found tracks "<<nt<<endl;
369
13888096 370
371 TVector vec(5);
04b80329 372 TTree *tr=gAlice->TreeR();
373 Int_t nent=(Int_t)tr->GetEntries();
0983ac5b 374 frecPoints = fITS->RecPoints();
13888096 375
376 Int_t numbpoints;
377 Int_t totalpoints=0;
378 Int_t *np = new Int_t[nent];
04b80329 379 fvettid = new Int_t* [nent];
13888096 380 Int_t mod;
381
382 for (mod=0; mod<nent; mod++) {
04b80329 383 fvettid[mod]=0;
f66ae545 384 fITS->ResetRecPoints();
385 gAlice->TreeR()->GetEvent(mod);
04b80329 386 numbpoints = frecPoints->GetEntries();
13888096 387 totalpoints+=numbpoints;
388 np[mod] = numbpoints;
389 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n"; getchar();
04b80329 390 fvettid[mod] = new Int_t[numbpoints];
13888096 391 Int_t ii;
04b80329 392 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
13888096 393 }
394
cbcfa38d 395 AliTPCtrack *track=0;
13888096 396
397
04b80329 398 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
13888096 399
0983ac5b 400 TVector vgeant(3);
401
13888096 402
403 TTree tracktree1("TreeT","Tree with ITS tracks");
04b80329 404 AliITSIOTrack *ioTrack=0;
405 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
13888096 406
04b80329 407
13888096 408 Int_t j;
04b80329 409 for (j=minTr; j<=maxTr; j++) {
13888096 410 track=(AliTPCtrack*)tracks.UncheckedAt(j);
13888096 411 if (!track) continue;
f66ae545 412
0983ac5b 413
04b80329 414 ////// propagation to the end of TPC //////////////
13888096 415 Double_t xk=77.415;
416 track->PropagateTo(xk, 28.94, 1.204e-3); //Ne
417 xk -=0.01;
418 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
419 xk -=0.04;
04b80329 420 track->PropagateTo(xk, 44.86, 1.45); //kevlar
13888096 421 xk -=2.0;
422 track->PropagateTo(xk, 41.28, 0.029); //Nomex
423 xk-=16;
424 track->PropagateTo(xk,36.2,1.98e-3); //C02
425 xk -=0.01;
426 track->PropagateTo(xk, 24.01, 2.7); //Al
427 xk -=0.01;
428 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
429 xk -=0.04;
04b80329 430 track->PropagateTo(xk, 44.86, 1.45); //kevlar
13888096 431 xk -=0.5;
432 track->PropagateTo(xk, 41.28, 0.029); //Nomex
433
04b80329 434 ///////////////////////////////////////////////////////////////
13888096 435
04b80329 436
437 AliITSTrackV1 trackITS(*track);
438
f66ae545 439 if(fresult){ delete fresult; fresult=0;}
04b80329 440 fresult = new AliITSTrackV1(trackITS);
441
442 AliITSTrackV1 primaryTrack(trackITS);
0983ac5b 443
444 vgeant=(*fresult).GetVertex();
445
13888096 446
04b80329 447 // Definition of dv and zv for vertex constraint
13888096 448 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
449 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
450 Double_t uniform= gRandom->Uniform();
451 Double_t signdv;
452 if(uniform<=0.5) signdv=-1.;
453 else
454 signdv=1.;
455
04b80329 456 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
457 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
458 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
13888096 459
04b80329 460 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
461 trackITS.SetDv(dv); trackITS.SetZv(zv);
13888096 462 trackITS.SetsigmaDv(sigmaDv); trackITS.SetsigmaZv(sigmaZv);
04b80329 463 (*fresult).SetDv(dv); (*fresult).SetZv(zv);
464 (*fresult).SetsigmaDv(sigmaDv); (*fresult).SetsigmaZv(sigmaZv);
465 primaryTrack.SetDv(dv); primaryTrack.SetZv(zv);
466 primaryTrack.SetsigmaDv(sigmaDv); primaryTrack.SetsigmaZv(sigmaZv);
13888096 467
04b80329 468 primaryTrack.PrimaryTrack(frl);
469 TVector d2=primaryTrack.Getd2();
470 TVector tgl2=primaryTrack.Gettgl2();
471 TVector dtgl=primaryTrack.Getdtgl();
13888096 472 trackITS.Setd2(d2); trackITS.Settgl2(tgl2); trackITS.Setdtgl(dtgl);
04b80329 473 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2); (*fresult).Setdtgl(dtgl);
13888096 474 /*
475 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
04b80329 476 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
13888096 477 */
04b80329 478
479
480 TList *list= new TList();
481
482 list->AddLast(&trackITS);
483
484 fPtref=TMath::Abs( (trackITS).GetPt() );
0983ac5b 485
f66ae545 486 if(fPtref>1.0) fChi2max=40.;
70a9314b 487 if(fPtref<=1.0) fChi2max=20.;
0983ac5b 488 if(fPtref<0.4 ) fChi2max=100.;
489 if(fPtref<0.2 ) fChi2max=40.;
490 // if(fPtref<0.4 ) fChi2max=30.;
491 // if(fPtref<0.2 ) fChi2max=20.;
492 //if(fPtref<0.2 ) fChi2max=10.;
493 //if(fPtref<0.1 ) fChi2max=5.;
494
f66ae545 495
b7a35fb7 496 cout << "\n Pt = " << fPtref <<"\n"; //stampa
f66ae545 497 RecursiveTracking(list);
04b80329 498 list->Delete();
499 delete list;
500
501 Int_t itot=-1;
502 TVector vecTotLabRef(18);
503 Int_t lay, k;
504 for(lay=5; lay>=0; lay--) {
505 TVector vecLabRef(3);
506 vecLabRef=(*fresult).GetLabTrack(lay);
507 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
508 for(k=0; k<3; k++){
509 Int_t lpp=(Int_t)vecLabRef(k);
510 if(lpp>=0) {
511 TParticle *p=(TParticle*) gAlice->Particle(lpp);
512 Int_t pcode=p->GetPdgCode();
513 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
514 }
515 itot++; vecTotLabRef(itot)=vecLabRef(k);
516 if(vecLabRef(k)==0. && clustZ == 0.) vecTotLabRef(itot) =-3.; }
517 }
518 Long_t labref;
519 Int_t freq;
520 (*fresult).Search(vecTotLabRef, labref, freq);
521
522
523 //if(freq < 6) labref=-labref; // cinque - sei
524 if(freq < 5) labref=-labref; // cinque - sei
525 (*fresult).SetLabel(labref);
526
13888096 527 // cout<<" progressive track number = "<<j<<"\r";
528 // cout<<j<<"\r";
04b80329 529 Int_t numOfCluster=(*fresult).GetNumClust();
b7a35fb7 530 cout<<" progressive track number = "<<j<<"\n"; // stampa
04b80329 531 Long_t labITS=(*fresult).GetLabel();
b7a35fb7 532 cout << " ITS track label = " << labITS << "\n"; // stampa
13888096 533 int lab=track->GetLabel();
b7a35fb7 534 cout << " TPC track label = " << lab <<"\n"; // stampa
13888096 535
536
537//propagation to vertex
538
539 Double_t rbeam=3.;
540
04b80329 541 (*fresult).Propagation(rbeam);
13888096 542
04b80329 543 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
544 (*fresult).GetCElements(c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44);
13888096 545
04b80329 546 Double_t pt=TMath::Abs((*fresult).GetPt());
547 Double_t dr=(*fresult).GetD();
548 Double_t z=(*fresult).GetZ();
549 Double_t tgl=(*fresult).GetTgl();
550 Double_t c=(*fresult).GetC();
551 Double_t cy=c/2.;
552 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
553 dz-=vgeant(2);
13888096 554
04b80329 555 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
556 Double_t phi=(*fresult).Getphi();
557 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
13888096 558 Double_t duepi=2.*TMath::Pi();
559 if(phivertex>duepi) phivertex-=duepi;
560 if(phivertex<0.) phivertex+=duepi;
13888096 561
562//////////////////////////////////////////////////////////////////////////////////////////
563
564 Int_t idmodule,idpoint;
04b80329 565 if(numOfCluster >=5) { // cinque - sei
566 //if(numOfCluster ==6) { // cinque - sei
13888096 567
568
04b80329 569 AliITSIOTrack outTrack;
13888096 570
04b80329 571 ioTrack=&outTrack;
13888096 572
04b80329 573 ioTrack->SetStatePhi(phi);
574 ioTrack->SetStateZ(z);
575 ioTrack->SetStateD(dr);
576 ioTrack->SetStateTgl(tgl);
577 ioTrack->SetStateC(c);
578 Double_t radius=(*fresult).Getrtrack();
579 ioTrack->SetRadius(radius);
13888096 580 Int_t charge;
04b80329 581 if(c>0.) charge=-1; else charge=1;
582 ioTrack->SetCharge(charge);
13888096 583
584
585
04b80329 586 ioTrack->SetCovMatrix(c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44);
13888096 587
588 Double_t px=pt*TMath::Cos(phivertex);
589 Double_t py=pt*TMath::Sin(phivertex);
590 Double_t pz=pt*tgl;
591
04b80329 592 Double_t xtrack=dr*TMath::Sin(phivertex);
593 Double_t ytrack=dr*TMath::Cos(phivertex);
594 Double_t ztrack=dz+vgeant(2);
595
596
597 ioTrack->SetPx(px);
598 ioTrack->SetPy(py);
599 ioTrack->SetPz(pz);
600 ioTrack->SetX(xtrack);
601 ioTrack->SetY(ytrack);
602 ioTrack->SetZ(ztrack);
603 ioTrack->SetLabel(labITS);
0983ac5b 604 ioTrack->SetTPCLabel(lab);
13888096 605
606 Int_t il;
607 for(il=0;il<6; il++){
04b80329 608 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
609 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
13888096 610 }
611 tracktree1.Fill();
612
613 //cout<<" labITS = "<<labITS<<"\n";
04b80329 614 //cout<<" phi z dr tgl c = "<<phi<<" "<<z<<" "<<dr<<" "<<tgl<<" "<<c<<"\n"; getchar();
13888096 615
13888096 616 for (il=0;il<6;il++) {
04b80329 617 idpoint=(*fresult).GetIdPoint(il);
618 idmodule=(*fresult).GetIdModule(il);
b7a35fb7 619 //*(fvettid[idmodule]+idpoint)=1;
620 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1; //modificata angela
04b80329 621 ioTrack->SetIdPoint(il,idpoint);
622 ioTrack->SetIdModule(il,idmodule);
13888096 623 }
f66ae545 624
13888096 625
04b80329 626 } // end if on numOfCluster
13888096 627 //gObjectTable->Print(); // stampa memoria
04b80329 628 } // end for (int j=minTr; j<=maxTr; j++)
f66ae545 629
13888096 630 static Bool_t first=kTRUE;
631 static TFile *tfile;
632
633 if(first) {
634 tfile=new TFile("itstracks.root","RECREATE");
635 //cout<<"I have opened itstracks.root file "<<endl;
636 }
637 first=kFALSE;
638 tfile->cd();
639 tfile->ls();
640
641 char hname[30];
642 sprintf(hname,"TreeT%d",evNumber);
643
644 tracktree1.Write(hname);
645
646
647
648 TTree *fAli=gAlice->TreeK();
649 TFile *fileAli=0;
650
651 if (fAli) fileAli =fAli->GetCurrentFile();
652 fileAli->cd();
653
654 ////////////////////////////////////////////////////////////////////////////////////////////////
655
656 printf("delete vectors\n");
657 if(np) delete [] np;
04b80329 658 if(fvettid) delete [] fvettid;
f66ae545 659 if(fresult) {delete fresult; fresult=0;}
660
04b80329 661}
662
663
664
665void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
666
667/////////////////////// This function perform the recursive tracking in ITS detectors /////////////////////
668/////////////////////// reference is a pointer to the final best track /////////////////////
669//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
670// The authors thank Mariana Bondila to have help them to resolve some problems. July-2000
671
672 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9; Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
f66ae545 673
674 //////////////////////
675 Float_t sigmaphil[6], sigmazl[6];
676 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
677 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
678 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
679 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
680 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
681 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
682
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
04b80329 691
70a9314b 692 Int_t index;
f66ae545 693 AliITSgeom *g1 = fITS->GetITSgeom();
694 AliITSRecPoint *recp;
04b80329 695 for(index =0; index<trackITSlist->GetSize(); index++) {
696 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
697
698 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
699 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
700 // cout<<"fvtrack =" <<"\n";
701 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "<<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "<<(*trackITS)(4)<<"\n";
702 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
703 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
704 // getchar();
705 Double_t chi2Now, chi2Ref;
70a9314b 706 Float_t numClustRef = fresult->GetNumClust();
04b80329 707 if((*trackITS).GetLayer()==1 ) {
708 chi2Now = trackITS->GetChi2();
709 Float_t numClustNow = trackITS->GetNumClust();
710 if(trackITS->GetNumClust()) chi2Now /= (Double_t )trackITS->GetNumClust();
0983ac5b 711 chi2Ref = fresult->GetChi2();
712
04b80329 713 if(fresult->GetNumClust()) chi2Ref /= (Double_t )fresult->GetNumClust();
714 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
715 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
716 if((numClustNow == numClustRef )&& (chi2Now < chi2Ref)) {*fresult = *trackITS;}
717 continue;
718 }
0983ac5b 719
f66ae545 720 if(trackITS->Getfnoclust()>=2) continue;
04b80329 721 Float_t numClustNow = trackITS->GetNumClust();
722 if(numClustNow) {
723 chi2Now = trackITS->GetChi2();
0983ac5b 724
725
726 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
727
f66ae545 728 //cout<<" chi2Now = "<<chi2Now<<"\n";
0983ac5b 729 // commentato il 30-7-2001
730 chi2Now/=numClustNow;
04b80329 731 if(fPtref > 1.0 && chi2Now > 30.) continue;
732 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
0983ac5b 733 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
734 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
f66ae545 735 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
736 if(fPtref <= 0.2 && chi2Now > 7.) continue;
0983ac5b 737
738
739 /////////////////////////////
740
04b80329 741 }
742
743 Int_t layerInit = (*trackITS).GetLayer();
744 Int_t layernew = layerInit - 2; // -1 for new layer, -1 for matrix index
04b80329 745
746 TList listoftrack;
747 Int_t ladp, ladm, detp,detm,ladinters,detinters;
748 Int_t layerfin=layerInit-1;
04b80329 749 // cout<<"Prima di intersection \n";
cbcfa38d 750
751 //if(!fTimerIntersection) fTimerIntersection = new TStopwatch(); // timer
752 //fTimerIntersection->Continue(); // timer
753 Int_t outinters=Intersection(*trackITS, layerfin, ladinters, detinters);
754 //fTimerIntersection->Stop(); // timer
04b80329 755
756 // cout<<" outinters = "<<outinters<<"\n";
757 // cout<<" Layer ladder detector intersection ="<<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
758 // cout << " phiinters zinters = "<<(*trackITS)(0) << " "<<(*trackITS)(1)<<"\n"; getchar();
759
760 if(outinters==-1) continue;
761
762 Int_t flaghit=0;
763 if(outinters==0){
764 TVector toucLad(9), toucDet(9);
765 Int_t lycur=layerfin;
766 ladp=ladinters+1;
767 ladm=ladinters-1;
768 if(ladm <= 0) ladm=fNlad[layerfin-1];
769 if(ladp > fNlad[layerfin-1]) ladp=1;
770 detp=detinters+1;
771 detm=detinters-1;
772 Int_t idetot=1;
f66ae545 773 /*
04b80329 774 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
775 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
776 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
777 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
778 if(detm > 0 && detp <= fNdet[layerfin-1]) {
779 idetot=9;
780 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
781 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
782 }
783
784 if(detm > 0 && detp > fNdet[layerfin-1]) {
785 idetot=6;
786 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
787 }
788
789 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
790 idetot=6;
791 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
792 }
f66ae545 793 */
794 Float_t epsphi=5.0, epsz=5.0;
795 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
796 ////////////////////////////////////////////////////////////////////////////
797//// nuova definizione idetot e toucLad e toucDet to be transformed in a method
798// these values could be modified
799 Float_t pigre=TMath::Pi();
800 Float_t rangephi=5., rangez=5.;
801 if(layerfin==1 || layerfin ==2){
802 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+(*trackITS).GetSigmaphi());
803 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+(*trackITS).GetSigmaZ());
804 }
805 if(layerfin==3 || layerfin ==4){
806 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+(*trackITS).GetSigmaphi());
807 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+(*trackITS).GetSigmaZ());
808 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+(*trackITS).GetSigmaphi());
809 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+(*trackITS).GetSigmaZ());
810 }
811 if(layerfin==5 || layerfin ==6){
812 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+(*trackITS).GetSigmaphi());
813 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+(*trackITS).GetSigmaZ());
814 }
815 Float_t phinters, zinters;
816 phinters=(*trackITS).Getphi();
817 zinters=(*trackITS).GetZ();
818 Float_t distz;
819 Float_t phicm, phicp, distphim, distphip;
820 phicm=phinters;
821 if(phinters>fphimax[layerfin-1][ladm]) phicm=phinters-2*pigre;
822 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm]);
823 phicp=phinters;
824 if(phinters>fphimin[layerfin-1][ladp]) phicp=phinters-2.*pigre;
825 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp]);
826 Int_t flagzmin=0;
827 Int_t flagzmax=0;
828 idetot=1;
829 toucLad(0)=ladinters; toucDet(0)=detinters;
830 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
831 if(detm>0 && rangez>=distz){
832 flagzmin=1;
833 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
834 if(rangephi>=distphim){
835 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detinters;
836 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detm;
837 }
838 if(rangephi>=distphip){
839 idetot++; toucLad(idetot-1)=ladp; toucDet(idetot-1)=detinters;
840 idetot++; toucLad(idetot-1)=ladp; toucDet(idetot-1)=detm;
841 }
842 } //end detm>0....
843 if(detp<=fNdet[layerfin-1]) distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
844 if(detp<=fNdet[layerfin-1] && rangez>=distz){
845 flagzmax=1;
846 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
847 if(rangephi>=distphim){
848 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
849 if(flagzmin == 0) {idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detinters;}
850 }
851 if(rangephi>=distphip){
852 idetot++; toucLad(idetot-1)=ladp; toucDet(idetot-1)=detp;
853 if(flagzmin == 0) {idetot++; toucLad(idetot-1)=ladp; toucDet(idetot-1)=detinters;}
854 }
855 } //end detm<fNdet[.......
856
857
858 if(flagzmin == 0 && flagzmax==0){
859 if(rangephi>=distphim){idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detinters;}
860 if(rangephi>=distphip){idetot++; toucLad(idetot-1)=ladp; toucDet(idetot-1)=detinters;}
861 }
862
863///////////////////////////////////////////////////////////////////////////////////////////////////
864
865
0983ac5b 866 Int_t iriv;
04b80329 867 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
04b80329 868
869 ////////////////////////////////////////////////////////////////////////////////////////////////
870
871 /*** Rec points sorted by module *****/
872 /**************************************/
873
f66ae545 874 Int_t indexmod; //mod ott
875 // AliITSRecPoint *recp;
876 indexmod = g1->GetModuleIndex(lycur,toucLad(iriv),toucDet(iriv));
877 //mod ott
70a9314b 878 fITS->ResetRecPoints();
f66ae545 879 gAlice->TreeR()->GetEvent(indexmod);
04b80329 880 Int_t npoints=frecPoints->GetEntries();
f66ae545 881 /* mod ott
0983ac5b 882 Int_t *indlist=new Int_t[npoints+1];
04b80329 883 Int_t counter=0;
884 Int_t ind;
885 for (ind=0; ind<=npoints; ind++) {
886 indlist[ind]=-1;
887 if (*(fvettid[index]+ind)==0) {
888 indlist[counter]=ind;
889 counter++;
890 }
891 }
892
893 ind=-1;
894
895 for(;;) {
896 ind++;
897 if(indlist[ind] < 0) recp=0;
898 else recp = (AliITSRecPoint*)frecPoints->UncheckedAt(indlist[ind]);
899
f66ae545 900 if((!recp) ) break;
901 */
902/////////////////////////new
903 Int_t indnew;
904 for(indnew=0; indnew<npoints; indnew++){
905 if (*(fvettid[indexmod]+indnew)==0)
906 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
907 else
908 continue;
909
910///////////////////////////////////////////////////////////////////////
04b80329 911 TVector cluster(3),vecclust(9);
912 vecclust(6)=vecclust(7)=vecclust(8)=-1.;
913 Double_t sigma[2];
914 // set veclust in global
915 Float_t global[3], local[3];
916 local[0]=recp->GetX();
917 local[1]=0.;
918 local[2]= recp->GetZ();
04b80329 919 Int_t play = lycur;
920 Int_t plad = TMath::Nint(toucLad(iriv));
0983ac5b 921 Int_t pdet = TMath::Nint(toucDet(iriv));
04b80329 922 g1->LtoG(play,plad,pdet,local,global);
923
924 vecclust(0)=global[0];
925 vecclust(1)=global[1];
926 vecclust(2)=global[2];
927
928
f66ae545 929 vecclust(3) = (Float_t)recp->fTracks[0];
930 //vecclust(4) = (Float_t)indlist[ind];
931 vecclust(4) = (Float_t)indnew;
932 vecclust(5) = (Float_t)indexmod; //mod ott
933 vecclust(6) = (Float_t)recp->fTracks[0];
934 vecclust(7) = (Float_t)recp->fTracks[1];
935 vecclust(8) = (Float_t)recp->fTracks[2];
04b80329 936
937 sigma[0] = (Double_t) recp->GetSigmaX2();
70a9314b 938 sigma[1] = (Double_t) recp->GetSigmaZ2();
04b80329 939
940 //now we are in r,phi,z in global
941 cluster(0) = TMath::Sqrt(vecclust(0)*vecclust(0)+vecclust(1)*vecclust(1));//r hit
70a9314b 942 cluster(1) = TMath::ATan2(vecclust(1),vecclust(0)); if(cluster(1)<0.) cluster(1)+=2.*TMath::Pi();
04b80329 943 cluster(2) = vecclust(2); // z hit
944
0983ac5b 945 // cout<<" layer = "<<play<<"\n";
946 // cout<<" cluster prima = "<<vecclust(0)<<" "<<vecclust(1)<<" "
947 // <<vecclust(2)<<"\n"; getchar();
f66ae545 948
04b80329 949 Float_t sigmatotphi, sigmatotz;
950
f66ae545 951 // Float_t epsphi=5.0, epsz=5.0;
952 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
04b80329 953
954 Double_t rTrack=(*trackITS).Getrtrack();
0983ac5b 955 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
956 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi + (*trackITS).GetSigmaphi());
04b80329 957
0983ac5b 958 sigmatotz=epsz*TMath::Sqrt(sigma[1] + (*trackITS).GetSigmaZ());
04b80329 959 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)<<" "<<cluster(1)<<" "<<sigmatotphi<<" "<<vecclust(3)<<"\n";
960 //if(vecclust(3)==481) getchar();
961 if(cluster(1)<6. && (*trackITS).Getphi()>6.) cluster(1)=cluster(1)+(2.*TMath::Pi());
962 if(cluster(1)>6. && (*trackITS).Getphi()<6.) cluster(1)=cluster(1)-(2.*TMath::Pi());
963 if(TMath::Abs(cluster(1)-(*trackITS).Getphi()) > sigmatotphi) continue;
964 // cout<<" supero sigmaphi \n";
965 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
966 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
967
968 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
969 (*newTrack).Correct(Double_t(cluster(0)));
970 //cout<<" cluster(2) e (*newTrack).GetZ() = "<<cluster(2)<<" "<< (*newTrack).GetZ()<<"\n";
971 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
972 delete newTrack;
973 continue;}
70a9314b 974
975 Double_t sigmanew[2];
976 sigmanew[0]= sigmaphi;
977 sigmanew[1]=sigma[1];
978
979 Double_t m[2];
980 m[0]=cluster(1);
981 m[1]=cluster(2);
0983ac5b 982// Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
70a9314b 983 // cout<<" chi2pred = "<<chi2pred<<"\n";
0983ac5b 984
985 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
70a9314b 986
04b80329 987 if(iriv == 0) flaghit=1;
988
989 (*newTrack).AddMS(frl); // add the multiple scattering matrix to the covariance matrix
70a9314b 990 (*newTrack).AddEL(frl,1.,0);
04b80329 991
70a9314b 992
04b80329 993
cbcfa38d 994 //if(!fTimerKalman) fTimerKalman = new TStopwatch(); // timer
70a9314b 995 //fTimerKalman->Continue(); // timer
996
cbcfa38d 997 if(fflagvert){
f66ae545 998 KalmanFilterVert(newTrack,cluster,sigmanew);
999 // KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
cbcfa38d 1000 }
1001 else{
04b80329 1002 KalmanFilter(newTrack,cluster,sigmanew);
cbcfa38d 1003 }
1004 //fTimerKalman->Stop(); // timer
04b80329 1005
1006
1007 (*newTrack).PutCluster(layernew, vecclust);
1008 newTrack->AddClustInTrack();
1009
1010 listoftrack.AddLast(newTrack);
1011
0983ac5b 1012 } // end of for(;;) on rec points
1013
f66ae545 1014 // delete [] indlist; //mod ott
04b80329 1015
1016 } // end of for on detectors
1017
1018 }//end if(outinters==0)
1019
1020 if(flaghit==0 || outinters==-2) {
70a9314b 1021 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
0983ac5b 1022 (*newTrack).Setfnoclust();
04b80329 1023 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
1024 (*newTrack).AddMS(frl); // add the multiple scattering matrix to the covariance matrix
1025 (*newTrack).AddEL(frl,1.,0);
1026
1027 listoftrack.AddLast(newTrack);
1028 }
1029
1030
1031 //gObjectTable->Print(); // stampa memoria
1032
1033 RecursiveTracking(&listoftrack);
1034 listoftrack.Delete();
1035 } // end of for on tracks
1036
1037 //gObjectTable->Print(); // stampa memoria
1038
1039}
1040
cbcfa38d 1041Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track, Int_t layer, Int_t &ladder, Int_t &detector) {
04b80329 1042//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1043// Found the intersection and the detector
1044
cbcfa38d 1045 Double_t rk=fAvrad[layer-1];
04b80329 1046 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1047 track.Propagation(rk);
1048 Double_t zinters=track.GetZ();
1049 Double_t phinters=track.Getphi();
1050 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
04b80329 1051
1052 TVector det(9);
1053 TVector listDet(2);
1054 TVector distZCenter(2);
04b80329 1055
1056 Int_t iz=0;
04b80329 1057 Int_t iD;
cbcfa38d 1058
04b80329 1059 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
cbcfa38d 1060 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1061 if(iz>1) {
1062 cout<< " Errore su iz in Intersection \n"; getchar();
1063 }
04b80329 1064 else {
1065 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2)); iz++;
1066 }
1067 }
1068 }
13888096 1069
04b80329 1070 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1071 detector=Int_t (listDet(0));
1072 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
cbcfa38d 1073
04b80329 1074 TVector listLad(2);
1075 TVector distPhiCenter(2);
1076 Int_t ip=0;
1077 Double_t pigre=TMath::Pi();
1078
1079 Int_t iLd;
cbcfa38d 1080 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1081 Double_t phimin=fphimin[layer-1][iLd-1];
1082 Double_t phimax=fphimax[layer-1][iLd-1];
1083 Double_t phidet=fphidet[layer-1][iLd-1];
1084 Double_t phiconfr=phinters;
0983ac5b 1085 if(phimin>phimax) {
1086 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n"; getchar();}
70a9314b 1087 phimin-=(2.*pigre);
cbcfa38d 1088 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1089 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
04b80329 1090 }
cbcfa38d 1091 if(phiconfr>phimin && phiconfr<= phimax) {
1092 if(ip>1) {
1093 cout<< " Errore su ip in Intersection \n"; getchar();
1094 }
04b80329 1095 else {
1096 listLad(ip)= iLd; distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1097 }
1098 }
1099 }
1100 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1101 ladder=Int_t (listLad(0));
cbcfa38d 1102 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
04b80329 1103
1104 return 0;
13888096 1105}
04b80329 1106
04b80329 1107void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,Double_t sigma[2]){
1108//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1109// Kalman filter without vertex constraint
1110
1111
1112 ////////////////////////////// Evaluation of the measurement vector /////////////////////////////////////
1113
1114 Double_t m[2];
1115 Double_t rk,phik,zk;
1116 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1117 m[0]=phik; m[1]=zk;
1118
1119 ///////////////////////////////////// Evaluation of the error matrix V ///////////////////////////////
1120
1121 Double_t v00=sigma[0];
1122 Double_t v11=sigma[1];
1123
1124 ///////////////////////////////////////////////////////////////////////////////////////////
1125
1126
1127 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,cin32,cin42,cin33,cin43,cin44;
1128
1129 newTrack->GetCElements(cin00,cin10,cin11,cin20,cin21,cin22,cin30,cin31,cin32,cin33,cin40,
1130 cin41,cin42,cin43,cin44); //get C matrix
1131
1132 Double_t rold00=cin00+v00;
1133 Double_t rold10=cin10;
1134 Double_t rold11=cin11+v11;
1135
1136//////////////////////////////////// R matrix inversion ///////////////////////////////////////////////
1137
1138 Double_t det=rold00*rold11-rold10*rold10;
1139 Double_t r00=rold11/det;
1140 Double_t r10=-rold10/det;
1141 Double_t r11=rold00/det;
1142
1143////////////////////////////////////////////////////////////////////////////////////////////////////////
1144
1145 Double_t k00=cin00*r00+cin10*r10;
1146 Double_t k01=cin00*r10+cin10*r11;
1147 Double_t k10=cin10*r00+cin11*r10;
1148 Double_t k11=cin10*r10+cin11*r11;
1149 Double_t k20=cin20*r00+cin21*r10;
1150 Double_t k21=cin20*r10+cin21*r11;
1151 Double_t k30=cin30*r00+cin31*r10;
1152 Double_t k31=cin30*r10+cin31*r11;
1153 Double_t k40=cin40*r00+cin41*r10;
1154 Double_t k41=cin40*r10+cin41*r11;
1155
1156 Double_t x0,x1,x2,x3,x4;
1157 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1158
1159 Double_t savex0=x0, savex1=x1;
1160
1161 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1162 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1163 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1164 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1165 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1166
1167 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1168
1169 c00=cin00-k00*cin00-k01*cin10;
1170 c10=cin10-k00*cin10-k01*cin11;
1171 c20=cin20-k00*cin20-k01*cin21;
1172 c30=cin30-k00*cin30-k01*cin31;
1173 c40=cin40-k00*cin40-k01*cin41;
1174
1175 c11=cin11-k10*cin10-k11*cin11;
1176 c21=cin21-k10*cin20-k11*cin21;
1177 c31=cin31-k10*cin30-k11*cin31;
1178 c41=cin41-k10*cin40-k11*cin41;
1179
1180 c22=cin22-k20*cin20-k21*cin21;
1181 c32=cin32-k20*cin30-k21*cin31;
1182 c42=cin42-k20*cin40-k21*cin41;
1183
1184 c33=cin33-k30*cin30-k31*cin31;
1185 c43=cin43-k30*cin40-k31*cin41;
1186
1187 c44=cin44-k40*cin40-k41*cin41;
1188
1189 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1190
1191 newTrack->PutCElements(c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44); // put in track the
1192 // new cov matrix
1193 Double_t vmcold00=v00-c00;
1194 Double_t vmcold10=-c10;
1195 Double_t vmcold11=v11-c11;
1196
1197///////////////////////////////////// Matrix vmc inversion ////////////////////////////////////////////////
1198
1199 det=vmcold00*vmcold11-vmcold10*vmcold10;
1200 Double_t vmc00=vmcold11/det;
1201 Double_t vmc10=-vmcold10/det;
1202 Double_t vmc11=vmcold00/det;
1203
1204////////////////////////////////////////////////////////////////////////////////////////////////////////////
1205
1206 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1207 (m[1]-x1)*vmc11*(m[1]-x1);
1208
1209 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1210
1211}
1212
1213
70a9314b 1214//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,TVector &cluster,Double_t sigma[2]){
0983ac5b 1215void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,TVector &cluster,Double_t sigma[2]/*, Double_t chi2pred*/){
04b80329 1216//Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1217// Kalman filter with vertex constraint
1218
1219 ////////////////////////////// Evaluation of the measurement vector m ///////////////
1220
1221 Double_t m[4];
1222 Double_t rk,phik,zk;
1223 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1224 m[0]=phik; m[1]=zk;
1225
1226 Double_t cc=(*newTrack).GetC();
1227 Double_t zv=(*newTrack).GetZv();
1228 Double_t dv=(*newTrack).GetDv();
1229 Double_t cy=cc/2.;
1230 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1231 m[2]=dv; m[3]=tgl;
1232
1233 ///////////////////////////////////// Evaluation of the error matrix V //////////////
1234 Int_t layer=newTrack->GetLayer();
1235 Double_t v00=sigma[0];
1236 Double_t v11=sigma[1];
1237 Double_t v31=sigma[1]/rk;
1238 Double_t sigmaDv=newTrack->GetsigmaDv();
1239 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1240 Double_t v32=newTrack->Getdtgl(layer-1);
1241 Double_t sigmaZv=newTrack->GetsigmaZv();
1242 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk) + newTrack->Gettgl2(layer-1);
1243 ///////////////////////////////////////////////////////////////////////////////////////
1244
1245 Double_t cin00,cin10,cin11,cin20,cin21,cin22,cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1246
1247 newTrack->GetCElements(cin00,cin10,cin11,cin20,cin21,cin22,cin30,cin31,cin32,cin33,cin40,
1248 cin41,cin42,cin43,cin44); //get C matrix
1249
1250 Double_t r[4][4];
1251 r[0][0]=cin00+v00;
1252 r[1][0]=cin10;
1253 r[2][0]=cin20;
1254 r[3][0]=cin30;
1255 r[1][1]=cin11+v11;
1256 r[2][1]=cin21;
1257 r[3][1]=cin31+sigma[1]/rk;
1258 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1259 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1260 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk) + newTrack->Gettgl2(layer-1);
1261
1262 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0]; r[1][2]=r[2][1]; r[1][3]=r[3][1];
1263 r[2][3]=r[3][2];
1264
1265///////////////////// Matrix R inversion ////////////////////////////////////////////
1266
1267 const Int_t kn=4;
1268 Double_t big, hold;
1269 Double_t d=1.;
1270 Int_t ll[kn],mm[kn];
1271
1272 Int_t i,j,k;
1273
1274 for(k=0; k<kn; k++) {
1275 ll[k]=k;
1276 mm[k]=k;
1277 big=r[k][k];
1278 for(j=k; j<kn ; j++) {
1279 for (i=j; i<kn; i++) {
1280 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) { big=r[i][j]; ll[k]=i; mm[k]=j; }
1281 }
1282 }
1283//
1284 j= ll[k];
1285 if(j > k) {
1286 for(i=0; i<kn; i++) { hold=-r[k][i]; r[k][i]=r[j][i]; r[j][i]=hold; }
1287
1288 }
1289//
1290 i=mm[k];
1291 if(i > k ) {
1292 for(j=0; j<kn; j++) { hold=-r[j][k]; r[j][k]=r[j][i]; r[j][i]=hold; }
1293 }
1294//
1295 if(!big) {
1296 d=0.;
1297 cout << "Singular matrix\n";
1298 }
1299 for(i=0; i<kn; i++) {
1300 if(i == k) { continue; }
1301 r[i][k]=r[i][k]/(-big);
1302 }
1303//
1304 for(i=0; i<kn; i++) {
1305 hold=r[i][k];
1306 for(j=0; j<kn; j++) {
1307 if(i == k || j == k) { continue; }
1308 r[i][j]=hold*r[k][j]+r[i][j];
1309 }
1310 }
1311//
1312 for(j=0; j<kn; j++) {
1313 if(j == k) { continue; }
1314 r[k][j]=r[k][j]/big;
1315 }
1316//
1317 d=d*big;
1318//
1319 r[k][k]=1./big;
1320 }
1321//
1322 for(k=kn-1; k>=0; k--) {
1323 i=ll[k];
1324 if(i > k) {
1325 for (j=0; j<kn; j++) {hold=r[j][k]; r[j][k]=-r[j][i]; r[j][i]=hold;}
1326 }
1327 j=mm[k];
1328 if(j > k) {
1329 for (i=0; i<kn; i++) {hold=r[k][i]; r[k][i]=-r[j][i]; r[j][i]=hold;}
1330 }
1331 }
1332//////////////////////////////////////////////////////////////////////////////////
1333
1334
1335 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1336 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1337 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1338 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1339 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1340 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1341 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1342 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1343 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1344 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1345 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1346 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1347 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1348 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1349 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1350 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1351 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1352 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1353 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1354 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1355
1356 Double_t x0,x1,x2,x3,x4;
1357 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1358
1359 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1360
1361 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1362 k03*(m[3]-savex3);
1363 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1364 k13*(m[3]-savex3);
1365 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1366 k23*(m[3]-savex3);
1367 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1368 k33*(m[3]-savex3);
1369 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1370 k43*(m[3]-savex3);
1371
1372 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1373
1374 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1375 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1376 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1377 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1378 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1379
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
1385 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1386 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1387 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1388
1389 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1390 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1391
1392 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1393
1394 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1395
1396 newTrack->PutCElements(c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44); // put in track the
1397 // new cov matrix
1398
1399 Double_t vmc[4][4];
1400
1401 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1402 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1403 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1404 vmc[3][3]=v33-c33;
1405
1406 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1407 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1408 vmc[2][3]=vmc[3][2];
1409
1410
1411/////////////////////// vmc matrix inversion ///////////////////////////////////
1412
1413 d=1.;
1414
1415 for(k=0; k<kn; k++) {
1416 ll[k]=k;
1417 mm[k]=k;
1418 big=vmc[k][k];
1419 for(j=k; j<kn ; j++) {
1420 for (i=j; i<kn; i++) {
1421 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) { big=vmc[i][j]; ll[k]=i; mm[k]=j; }
1422 }
1423 }
1424//
1425 j= ll[k];
1426 if(j > k) {
1427 for(i=0; i<kn; i++) { hold=-vmc[k][i]; vmc[k][i]=vmc[j][i]; vmc[j][i]=hold; }
1428
1429 }
1430//
1431 i=mm[k];
1432 if(i > k ) {
1433 for(j=0; j<kn; j++) { hold=-vmc[j][k]; vmc[j][k]=vmc[j][i]; vmc[j][i]=hold; }
1434 }
1435//
1436 if(!big) {
1437 d=0.;
1438 cout << "Singular matrix\n";
1439 }
1440 for(i=0; i<kn; i++) {
1441 if(i == k) { continue; }
1442 vmc[i][k]=vmc[i][k]/(-big);
1443 }
1444//
1445 for(i=0; i<kn; i++) {
1446 hold=vmc[i][k];
1447 for(j=0; j<kn; j++) {
1448 if(i == k || j == k) { continue; }
1449 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1450 }
1451 }
1452//
1453 for(j=0; j<kn; j++) {
1454 if(j == k) { continue; }
1455 vmc[k][j]=vmc[k][j]/big;
1456 }
1457//
1458 d=d*big;
1459//
1460 vmc[k][k]=1./big;
1461 }
1462//
1463 for(k=kn-1; k>=0; k--) {
1464 i=ll[k];
1465 if(i > k) {
1466 for (j=0; j<kn; j++) {hold=vmc[j][k]; vmc[j][k]=-vmc[j][i]; vmc[j][i]=hold;}
1467 }
1468 j=mm[k];
1469 if(j > k) {
1470 for (i=0; i<kn; i++) {hold=vmc[k][i]; vmc[k][i]=-vmc[j][i]; vmc[j][i]=hold;}
1471 }
1472 }
1473
1474
1475////////////////////////////////////////////////////////////////////////////////
1476
1477 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1478 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) ) +
1479 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1480 2.*vmc[3][1]*(m[3]-x3) ) +
1481 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
70a9314b 1482 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1483
1484 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
0983ac5b 1485 newTrack->SetChi2(newTrack->GetChi2()+chi2);
f66ae545 1486 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
04b80329 1487
1488}
1489