Updated Merger and RawSector functions
[u/mrichter/AliRoot.git] / ITS / AliITSTrackerV1.cxx
CommitLineData
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$Log$
cf411bb5 18Revision 1.18 2001/11/20 15:46:17 barbera
19Point coordinated are calculated in cylindrical reference frame once and for all at the beginning of tracking V1
20
61231d74 21Revision 1.10.2.1 2001/10/24 07:26:04 hristov
22All the changes from the head are merged with the release
23
11091b43 24Revision 1.14 2001/10/24 07:19:57 hristov
25Some pointer correctly initialised in one of the constructors
26
a49bb2c8 27Revision 1.13 2001/10/21 19:17:12 hristov
28Several pointers were set to zero in the default constructors to avoid memory management problems
29
55cd883f 30Revision 1.12 2001/10/19 21:32:35 nilsen
31Minor changes to remove compliation warning on gcc 2.92.2 compiler, and
32cleanded up a little bit of code.
33
b48af428 34*/
35// The purpose of this class is to permorm the ITS tracking. The
36// constructor has the task to inizialize some private members. The method
37// DoTracking is written to be called by a macro. It gets the event number,
38// the minimum and maximum order number of TPC tracks that are to be tracked
39// trough the ITS, and the file where the recpoints are registered. The
40// method Recursivetracking is a recursive function that performs the
41// tracking trough the ITS The method Intersection found the layer, ladder
42// and detector whre the intersection take place and caluclate the
43// cohordinates of this intersection. It returns an integer that is 0 if the
44// intersection has been found successfully. The two mwthods Kalmanfilter
45// and kalmanfiltervert operate the kalmanfilter without and with the vertex
46// imposition respectively. The authors thank Mariana Bondila to have help
47// them to resolve some problems. July-2000
04b80329 48
49#include <fstream.h>
13888096 50#include <TMath.h>
13888096 51#include <TBranch.h>
52#include <TVector.h>
13888096 53#include <TFile.h>
54#include <TTree.h>
cbcfa38d 55#include <TStopwatch.h>
56
13888096 57#include "TParticle.h"
58#include "AliRun.h"
59#include "AliITS.h"
04b80329 60#include "AliITSsegmentationSSD.h"
13888096 61#include "AliITSgeomSPD.h"
62#include "AliITSgeomSDD.h"
63#include "AliITSgeomSSD.h"
64#include "AliITSgeom.h"
13888096 65#include "AliITSRecPoint.h"
04b80329 66#include "stdlib.h"
13888096 67#include "AliKalmanTrack.h"
68#include "AliMagF.h"
04b80329 69#include "AliITSTrackV1.h"
70#include "AliITSIOTrack.h"
71#include "AliITSRad.h"
13888096 72#include "../TPC/AliTPCtracker.h"
13888096 73#include "AliITSTrackerV1.h"
0983ac5b 74#include "AliITSVertex.h"
13888096 75
13888096 76ClassImp(AliITSTrackerV1)
55cd883f 77 //______________________________________________________________________
78AliITSTrackerV1::AliITSTrackerV1() {
79 //Default constructor
80 fITS = 0;
81 fresult = 0;
64ab0d55 82 fPtref=0.;
83 fChi2max=0.;
84 //fepsphi=0.;
85 //fepsz=0.;
55cd883f 86 frecPoints = 0;
87 fvettid = 0;
64ab0d55 88 fflagvert=0;
55cd883f 89 frl = 0;
64ab0d55 90 Int_t ia;
91 for(ia=0; ia<6; ia++) {
92 fNlad[ia]=0;
93 fNdet[ia]=0;
94 fAvrad[ia]=0.;
95 fDetx[ia]=0.;
96 fDetz[ia]=0.;
97 } // end for ia
55cd883f 98 fzmin = 0;
99 fzmax = 0;
100 fphimin = 0;
101 fphimax = 0;
102 fphidet = 0;
64ab0d55 103 fNRecPoints=0;
104 fRecCylR=0;
105 fRecCylPhi=0;
106 fRecCylZ=0;
107 fFieldFactor=0;
55cd883f 108}
b48af428 109//______________________________________________________________________
64ab0d55 110AliITSTrackerV1::AliITSTrackerV1(AliITS* IITTSS, Int_t evnumber, Bool_t flag) {
b48af428 111 //Origin A. Badala' and G.S. Pappalardo:
112 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
113 // Class constructor. It does some initializations.
114
a49bb2c8 115 //PH Initialisation taken from the default constructor
b48af428 116 fITS = IITTSS;
a49bb2c8 117 fresult = 0;
64ab0d55 118 fPtref = 0.;
119 fChi2max =0.;
120 frecPoints = 0;
a49bb2c8 121 fvettid = 0;
64ab0d55 122 fflagvert = flag;
a49bb2c8 123 frl = 0;
124 fzmin = 0;
125 fzmax = 0;
126 fphimin = 0;
127 fphimax = 0;
128 fphidet = 0;
64ab0d55 129
b48af428 130 Int_t imax = 200,jmax = 450;
131 frl = new AliITSRad(imax,jmax);
132
133 ////////// gets information on geometry /////////////////////////////
64ab0d55 134 AliITSgeom *g1 = fITS->GetITSgeom();
b48af428 135 Int_t ll=1, dd=1;
136 TVector det(9);
137
b48af428 138 Int_t ia;
139 for(ia=0; ia<6; ia++) {
140 fNlad[ia]=g1->GetNladders(ia+1);
141 fNdet[ia]=g1->GetNdetectors(ia+1);
142 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
143 } // end for ia
b48af428 144
64ab0d55 145 //cout<<" mean radius = ";
b48af428 146 Int_t ib;
147 for(ib=0; ib<6; ib++) {
148 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
149 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
150 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
151 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
152 fAvrad[ib]=(r1+r2)/2.;
153 //cout<<fAvrad[ib]<<" ";
154 } // end for ib
155 //cout<<"\n"; getchar();
156
157 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
158 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
159
160 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
161 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
162
163 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
164 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
165
166 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
167 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
168
169 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
170 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
171
172 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
173 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
174 //cout<<" Detx Detz\n";
175 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<
176 // fDetz[la]<<endl;
177 //getchar();
64ab0d55 178
b48af428 179 // allocate memory and define matrices fzmin, fzmax, fphimin and fphimax //
180 Double_t epsz=1.2;
181 Double_t epszdrift=0.05;
182
183 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
184 Int_t im1, im2, im2max;
185 for(im1=0; im1<6; im1++) {
186 im2max=fNdet[im1];
187 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
188 } // end for im1
189
190 for(im1=0; im1<6; im1++) {
191 im2max=fNdet[im1];
192 for(im2=0; im2<im2max; im2++) {
193 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
194 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
195 else
196 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
197 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
198 else
cbcfa38d 199 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
b48af428 200 if(im1==2 || im1==3) {
201 fzmin[im1][im2]-=epszdrift;
202 fzmax[im1][im2]+=epszdrift;
203 } // end if im1==2 || im1==3
204 } // end for im2
205 } // end for im1
13888096 206
b48af428 207 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
208 for(im1=0;im1<6;im1++) {
209 im2max=fNlad[im1];
210 fphimin[im1] = new Double_t[im2max];
211 fphimax[im1] = new Double_t[im2max];
212 } // end for im1
213
214 fphidet = new Double_t*[6];
215 for(im1=0; im1<6; im1++) {
216 im2max=fNlad[im1];
217 fphidet[im1] = new Double_t[im2max];
218 } // end for im1
219
64ab0d55 220 //Float_t global[3],local[3];
221 Double_t global[3],local[3];
b48af428 222 Double_t pigre=TMath::Pi();
223 Double_t xmin,ymin,xmax,ymax;
224
225 for(im1=0; im1<6; im1++) {
226 im2max=fNlad[im1];
227 for(im2=0; im2<im2max; im2++) {
228 Int_t idet=2;
229 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
230 fphidet[im1][im2] = TMath::ATan2(Double_t(det(1)),
231 Double_t(det(0)));
232 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
233 local[1]=local[2]=0.;
234 local[0]= -(fDetx[im1]);
235 if(im1==0) local[0]= (fDetx[im1]); //to take into account
236 // different reference system
237 g1->LtoG(im1+1,im2+1,idet,local,global);
238 xmax=global[0]; ymax=global[1];
239 local[0]= (fDetx[im1]);
240 if(im1==0) local[0]= -(fDetx[im1]);//take into account different
241 // reference system
242 g1->LtoG(im1+1,im2+1,idet,local,global);
243 xmin=global[0]; ymin=global[1];
244 fphimin[im1][im2]= TMath::ATan2(ymin,xmin);
245 if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
246 fphimax[im1][im2]= TMath::ATan2(ymax,xmax);
247 if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
248 } // end for im2
249 } // end for im1
64ab0d55 250//////////////////////////////////////////////////////////////////////////////////////////////////////////
251/////////////// allocate memory and define vector fNRecPoints and matrices fRecCylR, fRecCylPhi, fRecCylZ /////////////
252 gAlice->GetEvent(evnumber);
253 Int_t NumOfModules = g1->GetIndexMax();
254 //fRecCylR = new Float_t *[NumOfModules];
255 fRecCylR = new Double_t *[NumOfModules];
256 //fRecCylPhi = new Float_t *[NumOfModules];
257 fRecCylPhi = new Double_t *[NumOfModules];
258 //fRecCylZ = new Float_t *[NumOfModules];
259 fRecCylZ = new Double_t *[NumOfModules];
260 AliITSRecPoint *recp;
261 fNRecPoints = new Int_t[NumOfModules];
262
263 for(Int_t module=0; module<NumOfModules; module++) {
264 fITS->ResetRecPoints();
265 gAlice->TreeR()->GetEvent(module);
266 frecPoints=fITS->RecPoints();
267 Int_t nRecPoints=fNRecPoints[module]=frecPoints->GetEntries();
268 /*
269 fRecCylR[module] = new Float_t[nRecPoints];
270 fRecCylPhi[module] = new Float_t[nRecPoints];
271 fRecCylZ[module] = new Float_t[nRecPoints];
272 */
273 fRecCylR[module] = new Double_t[nRecPoints];
274 fRecCylPhi[module] = new Double_t[nRecPoints];
275 fRecCylZ[module] = new Double_t[nRecPoints];
276 Int_t ind;
277 for(ind=0; ind<fNRecPoints[module]; ind++) {
278 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(ind);
279 // Float_t global[3], local[3];
280 Double_t global[3], local[3];
281 local[0]=recp->GetX();
282 local[1]=0.;
283 local[2]= recp->GetZ();
284 g1->LtoG(module,local,global);
285 /*
286 Float_t r = TMath::Sqrt(global[0]*global[0]+global[1]*global[1]); // r hit
287 Float_t phi = TMath::ATan2(global[1],global[0]); if(phi<0.) phi+=2.*TMath::Pi(); // phi hit
288 Float_t z = global[2]; // z hit
289 */
290
291 Double_t r = TMath::Sqrt(global[0]*global[0]+global[1]*global[1]); // r hit
292 Double_t phi = TMath::ATan2(global[1],global[0]); if(phi<0.) phi+=2.*TMath::Pi(); // phi hit
293 Double_t z = global[2]; // z hit
294
295 fRecCylR[module][ind]=r;
296 fRecCylPhi[module][ind]=phi;
297 fRecCylZ[module][ind]=z;
298 }
299 }
300 //}
301 //}
302////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
303
b48af428 304
305 ////////// gets magnetic field factor //////////////////////////////
306
307 AliMagF * fieldPointer = gAlice->Field();
308 fFieldFactor = (Double_t)fieldPointer->Factor();
309 //cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
310}
311//______________________________________________________________________
04b80329 312AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) {
b48af428 313 // Origin A. Badala' and G.S. Pappalardo:
314 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
315 // copy constructor
64ab0d55 316
317 *fITS = *cobj.fITS;
b48af428 318 *fresult = *cobj.fresult;
319 fPtref = cobj.fPtref;
320 fChi2max = cobj.fChi2max;
321 **fvettid = **cobj.fvettid;
322 fflagvert = cobj.fflagvert;
323 Int_t imax=200,jmax=450;
324 frl = new AliITSRad(imax,jmax);
325 *frl = *cobj.frl;
326 fFieldFactor = cobj.fFieldFactor;
327 Int_t i,im1,im2,im2max;
328 for(i=0; i<6; i++) {
329 fNlad[i] = cobj.fNlad[i];
330 fNdet[i] = cobj.fNdet[i];
331 fAvrad[i] = cobj.fAvrad[i];
332 fDetx[i] = cobj.fDetx[i];
333 fDetz[i] = cobj.fDetz[i];
334 } // end or i
335 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
336 for(im1=0; im1<6; im1++) {
337 im2max=fNdet[im1];
338 fzmin[im1] = new Double_t[im2max];
339 fzmax[im1] = new Double_t[im2max];
340 } // end for im1
cbcfa38d 341 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 342 for(im1=0;im1<6;im1++) {
343 im2max=fNlad[im1];
344 fphimin[im1] = new Double_t[im2max];
345 fphimax[im1] = new Double_t[im2max];
346 } // end for im1
347
348 fphidet = new Double_t*[6];
349 for(im1=0; im1<6; im1++) {
350 im2max=fNlad[im1];
351 fphidet[im1] = new Double_t[im2max];
352 } // end for im1
353 for(im1=0; im1<6; im1++) {
354 im2max=fNdet[im1];
355 for(im2=0; im2<im2max; im2++) {
356 fzmin[im1][im2]=cobj.fzmin[im1][im2];
357 fzmax[im1][im2]=cobj.fzmax[im1][im2];
358 } // end for im2
359 } // end for im1
360 for(im1=0; im1<6; im1++) {
361 im2max=fNlad[im1];
362 for(im2=0; im2<im2max; im2++) {
363 fphimin[im1][im2]=cobj.fphimin[im1][im2];
364 fphimax[im1][im2]=cobj.fphimax[im1][im2];
365 fphidet[im1][im2]=cobj.fphidet[im1][im2];
366 } // end for im2
367 } // end for im2
64ab0d55 368
369
370 AliITSgeom *g1 = fITS->GetITSgeom();
371 Int_t NumOfModules = g1->GetIndexMax();
372 /*
373 fRecCylR = new Float_t *[NumOfModules];
374 fRecCylPhi = new Float_t *[NumOfModules];
375 fRecCylZ = new Float_t *[NumOfModules];
376 */
377 fRecCylR = new Double_t *[NumOfModules];
378 fRecCylPhi = new Double_t *[NumOfModules];
379 fRecCylZ = new Double_t *[NumOfModules];
380 fNRecPoints = new Int_t[NumOfModules];
381 for(Int_t module=0; module<NumOfModules; module++) {
382 Int_t nRecPoints=fNRecPoints[module]=cobj.fNRecPoints[module];
383 /*
384 fRecCylR[module] = new Float_t[nRecPoints];
385 fRecCylPhi[module] = new Float_t[nRecPoints];
386 fRecCylZ[module] = new Float_t[nRecPoints];
387 */
388 fRecCylR[module] = new Double_t[nRecPoints];
389 fRecCylPhi[module] = new Double_t[nRecPoints];
390 fRecCylZ[module] = new Double_t[nRecPoints];
391 Int_t ind;
392 for(ind=0; ind<nRecPoints; ind++) {
393 fRecCylR[module][ind]=cobj.fRecCylR[module][ind];
394 fRecCylPhi[module][ind]=cobj.fRecCylPhi[module][ind];
395 fRecCylZ[module][ind]=cobj.fRecCylZ[module][ind];
396 }
397 }
398
399}
400void AliITSTrackerV1::DelMatrix(Int_t NumOfModules) {
401 for(Int_t mod=0; mod<NumOfModules; mod++) {
402 delete fRecCylR[mod];
403 delete fRecCylPhi[mod];
404 delete fRecCylZ[mod];
405 }
406 delete fRecCylR;
407 delete fRecCylPhi;
408 delete fRecCylZ;
cbcfa38d 409}
b48af428 410//______________________________________________________________________
cbcfa38d 411AliITSTrackerV1::~AliITSTrackerV1(){
b48af428 412 // Origin A. Badala' and G.S. Pappalardo:
413 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
64ab0d55 414 // class destructor
415 delete frl;
416 delete fNRecPoints;
417 for(Int_t i=0; i<6; i++) {
418 delete fzmin[i];
419 delete fzmax[i];
420 delete fphimin[i];
421 delete fphimax[i];
422 delete fphidet[i];
423 }
424
425 delete fzmin;
426 delete fzmax;
427 delete fphimin;
428 delete fphimax;
429 delete fphidet;
430
13888096 431}
b48af428 432//______________________________________________________________________
04b80329 433AliITSTrackerV1 &AliITSTrackerV1::operator=(AliITSTrackerV1 obj) {
b48af428 434 // Origin A. Badala' and G.S. Pappalardo:
435 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
436 // assignement operator
437
64ab0d55 438 *fITS = *obj.fITS;
b48af428 439 *fresult = *obj.fresult;
440 fPtref = obj.fPtref;
441 fChi2max = obj.fChi2max;
442 **fvettid = **obj.fvettid;
443 fflagvert = obj.fflagvert;
444 Int_t imax=200,jmax=450;
445 frl = new AliITSRad(imax,jmax);
446 *frl = *obj.frl;
447 fFieldFactor = obj.fFieldFactor;
448 Int_t i;
449 for(i=0; i<6; i++) {
450 fNlad[i] = obj.fNlad[i];
451 fNdet[i] = obj.fNdet[i];
452 fAvrad[i] = obj.fAvrad[i];
453 fDetx[i] = obj.fDetx[i];
454 fDetz[i] = obj.fDetz[i];
455 } // end for i
456 fzmin = new Double_t*[6];
457 fzmax = new Double_t*[6];
458 Int_t im1, im2, im2max;
459 for(im1=0; im1<6; im1++) {
460 im2max=fNdet[im1];
461 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
462 } // end for im1
cbcfa38d 463 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 464 for(im1=0;im1<6;im1++) {
465 im2max=fNlad[im1];
466 fphimin[im1] = new Double_t[im2max];
467 fphimax[im1] = new Double_t[im2max];
468 } // end for im1
469
470 fphidet = new Double_t*[6];
471 for(im1=0; im1<6; im1++) {
472 im2max=fNlad[im1];
473 fphidet[im1] = new Double_t[im2max];
474 } // end for im1
475 for(im1=0; im1<6; im1++) {
476 im2max=fNdet[im1];
477 for(im2=0; im2<im2max; im2++) {
478 fzmin[im1][im2]=obj.fzmin[im1][im2];
479 fzmax[im1][im2]=obj.fzmax[im1][im2];
480 } // end for im2
481 } // end for im1
482 for(im1=0; im1<6; im1++) {
483 im2max=fNlad[im1];
484 for(im2=0; im2<im2max; im2++) {
485 fphimin[im1][im2]=obj.fphimin[im1][im2];
486 fphimax[im1][im2]=obj.fphimax[im1][im2];
487 fphidet[im1][im2]=obj.fphidet[im1][im2];
488 } // end for im2
489 } // end for im1
490
64ab0d55 491 AliITSgeom *g1 = fITS->GetITSgeom();
492 Int_t NumOfModules = g1->GetIndexMax();
493 /*
494 fRecCylR = new Float_t *[NumOfModules];
495 fRecCylPhi = new Float_t *[NumOfModules];
496 fRecCylZ = new Float_t *[NumOfModules];
497 */
498 fRecCylR = new Double_t *[NumOfModules];
499 fRecCylPhi = new Double_t *[NumOfModules];
500 fRecCylZ = new Double_t *[NumOfModules];
501 fNRecPoints = new Int_t[NumOfModules];
502 for(Int_t module=0; module<NumOfModules; module++) {
503 Int_t nRecPoints=fNRecPoints[module]=obj.fNRecPoints[module];
504 /*
505 fRecCylR[module] = new Float_t[nRecPoints];
506 fRecCylPhi[module] = new Float_t[nRecPoints];
507 fRecCylZ[module] = new Float_t[nRecPoints];
508 */
509 fRecCylR[module] = new Double_t[nRecPoints];
510 fRecCylPhi[module] = new Double_t[nRecPoints];
511 fRecCylZ[module] = new Double_t[nRecPoints];
512 Int_t ind;
513 for(ind=0; ind<nRecPoints; ind++) {
514 fRecCylR[module][ind]=obj.fRecCylR[module][ind];
515 fRecCylPhi[module][ind]=obj.fRecCylPhi[module][ind];
516 fRecCylZ[module][ind]=obj.fRecCylZ[module][ind];
517 }
518 }
519
520
b48af428 521 return *this;
04b80329 522}
b48af428 523//______________________________________________________________________
524void AliITSTrackerV1::DoTracking(Int_t evNumber,Int_t minTr,Int_t maxTr,
61231d74 525 TFile *file, Bool_t realmass) {
b48af428 526 // Origin A. Badala' and G.S. Pappalardo:
527 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
528 // The method needs the event number, the minimum and maximum order
529 // number of TPC tracks that
530 // are to be tracked trough the ITS, and the file where the recpoints
531 // are registered.
532 // The method can be called by a macro. It preforms the tracking for
533 // all good TPC tracks
534
535 printf("begin DoTracking - file %p\n",file);
536
537 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 538
b48af428 539 AliKalmanTrack *kkprov;
540 kkprov->SetConvConst(100/0.299792458/0.2/fFieldFactor);
541
542 TFile *cf=TFile::Open("AliTPCclusters.root");
543 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60");
544 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
545
546 cf->cd();
547 AliTPCtracker *tracker = new AliTPCtracker(digp,evNumber);
548
549 // Load clusters
550 tracker->LoadInnerSectors();
551 tracker->LoadOuterSectors();
552
553 // Load tracks
64ab0d55 554 TFile *tf=TFile::Open("AliTPCtracksSorted.root");
b48af428 555 if (!tf->IsOpen()) {
556 cerr<<"Can't open AliTPCtracksSorted.root !\n";
557 return ;
558 } // end if
559 TObjArray tracks(200000);
560 char tname[100];
561 sprintf(tname,"TreeT_TPC_%d",evNumber);
562
563 TTree *tracktree=(TTree*)tf->Get(tname);
564 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
565 TBranch *tbranch=tracktree->GetBranch("tracks");
566 Int_t nentr=(Int_t)tracktree->GetEntries();
567 Int_t kk;
568
569 AliTPCtrack *ioTrackTPC=0;
570 for (kk=0; kk<nentr; kk++) {
571 ioTrackTPC=new AliTPCtrack;
572 tbranch->SetAddress(&ioTrackTPC);
573 tracktree->GetEvent(kk);
574 tracker->CookLabel(ioTrackTPC,0.1);
575 tracks.AddLast(ioTrackTPC);
576 } // end for kk
577 delete tracker;
578 tf->Close();
579
580 Int_t nt = tracks.GetEntriesFast();
581 cerr<<"Number of found tracks "<<nt<<endl;
582
583 TVector vec(5);
584 TTree *tr=gAlice->TreeR();
585 Int_t nent=(Int_t)tr->GetEntries();
586 frecPoints = fITS->RecPoints();
587
588 Int_t numbpoints;
589 Int_t totalpoints=0;
590 Int_t *np = new Int_t[nent];
591 fvettid = new Int_t* [nent];
592 Int_t mod;
593
594 for (mod=0; mod<nent; mod++) {
595 fvettid[mod]=0;
596 fITS->ResetRecPoints();
597 gAlice->TreeR()->GetEvent(mod);
598 numbpoints = frecPoints->GetEntries();
599 totalpoints+=numbpoints;
600 np[mod] = numbpoints;
601 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n";getchar();
602 fvettid[mod] = new Int_t[numbpoints];
603 Int_t ii;
604 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
605 } // end for mod
606
607 AliTPCtrack *track=0;
608
609 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
610
611 TVector vgeant(3);
612
613 TTree tracktree1("TreeT","Tree with ITS tracks");
614 AliITSIOTrack *ioTrack=0;
615 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
616
61231d74 617 TDatabasePDG * db = new TDatabasePDG;
618
b48af428 619 Int_t j;
620 for (j=minTr; j<=maxTr; j++) {
621 track=(AliTPCtrack*)tracks.UncheckedAt(j);
622 if (!track) continue;
61231d74 623
624 /// mass definition ////////////////////////
625 Double_t mass=0.13956995;
626 Int_t pcode=211; // a pion by default
627 if(realmass) {
628 Int_t TPClabel=TMath::Abs( track->GetLabel() );
629 TParticle *p = (TParticle*)gAlice->Particle(TPClabel);
630 pcode=p->GetPdgCode();
631 // Int_t mothercode=p->GetFirstMother();
632 //if(mothercode>0 ) numofsecondaries++; else numofprimaries++;
633 }
634 //if(!pcode) pcode=211;
635 if(TMath::Abs(pcode)<20443) mass=db->GetParticle(pcode)->Mass();
636
637
638 ///////////////////////////////////////////////
64ab0d55 639 /*
b48af428 640 ////// propagation to the end of TPC //////////////
641 Double_t xk=77.415;
61231d74 642 track->PropagateTo(xk, 28.94, 1.204e-3,mass); //Ne
b48af428 643 xk -=0.01;
61231d74 644 track->PropagateTo(xk, 44.77, 1.71,mass); //Tedlar
b48af428 645 xk -=0.04;
61231d74 646 track->PropagateTo(xk, 44.86, 1.45,mass); //kevlar
b48af428 647 xk -=2.0;
61231d74 648 track->PropagateTo(xk, 41.28, 0.029,mass); //Nomex
b48af428 649 xk-=16;
61231d74 650 track->PropagateTo(xk,36.2,1.98e-3,mass); //C02
b48af428 651 xk -=0.01;
61231d74 652 track->PropagateTo(xk, 24.01, 2.7,mass); //Al
b48af428 653 xk -=0.01;
61231d74 654 track->PropagateTo(xk, 44.77, 1.71,mass); //Tedlar
b48af428 655 xk -=0.04;
61231d74 656 track->PropagateTo(xk, 44.86, 1.45,mass); //kevlar
b48af428 657 xk -=0.5;
61231d74 658 track->PropagateTo(xk, 41.28, 0.029,mass); //Nomex
b48af428 659 ////////////////////////////////////////////////////////////////////
64ab0d55 660 */
d3ab000e 661 // new propagation to the end of TPC
64ab0d55 662 Double_t xk=80.;
663 // track->PropagateTo(xk,0.,0.); //Ne if it's still there //attenzione funziona solo se modifica in TPC
664 // Double_t xk=77.415;
d3ab000e 665 track->PropagateTo(xk, 28.94, 1.204e-3);
666 xk-=0.005;
667 track->PropagateTo(xk, 44.77,1.71); //Tedlar
668 xk-=0.02;
669 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
670 xk-=2.0;
671 track->PropagateTo(xk, 41.28, 0.029);//Nomex
672 xk-=0.02;
673 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
674 xk-=0.005;
675 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
676
677 xk=61.;
64ab0d55 678 // track->PropagateTo(xk,0.,0.); //C02
679 track->PropagateTo(xk,36.2,1.98e-3); //C02 //attenzione funziona solo se modifica in TPC
d3ab000e 680
681 xk -=0.005;
682 track->PropagateTo(xk, 24.01, 2.7); //Al
683 xk -=0.005;
684 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
685 xk -=0.02;
686 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
687 xk -=0.5;
688 track->PropagateTo(xk, 41.28, 0.029); //Nomex
689 xk -=0.02;
690 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
691 xk -=0.005;
692 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
693 xk -=0.005;
64ab0d55 694 track->PropagateTo(xk, 24.01, 2.7); //Al
695 ////////////////////////////////////////////////////////////////////////////////////////////////////////
61231d74 696 AliITSTrackV1 trackITS(*track);
697 trackITS.PutMass(mass); //new to add mass to track
b48af428 698 if(fresult){ delete fresult; fresult=0;}
699 fresult = new AliITSTrackV1(trackITS);
700
701 AliITSTrackV1 primaryTrack(trackITS);
702 vgeant=(*fresult).GetVertex();
703
704 // Definition of dv and zv for vertex constraint
705 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
706 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
13888096 707 Double_t uniform= gRandom->Uniform();
708 Double_t signdv;
709 if(uniform<=0.5) signdv=-1.;
b48af428 710 else
711 signdv=1.;
712
04b80329 713 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
b48af428 714 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
715 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
716 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
717 trackITS.SetDv(dv);
718 trackITS.SetZv(zv);
719 trackITS.SetsigmaDv(sigmaDv);
720 trackITS.SetsigmaZv(sigmaZv);
721 (*fresult).SetDv(dv);
722 (*fresult).SetZv(zv);
723 (*fresult).SetsigmaDv(sigmaDv);
724 (*fresult).SetsigmaZv(sigmaZv);
725 primaryTrack.SetDv(dv);
726 primaryTrack.SetZv(zv);
727 primaryTrack.SetsigmaDv(sigmaDv);
728 primaryTrack.SetsigmaZv(sigmaZv);
729 primaryTrack.PrimaryTrack(frl);
730 TVector d2=primaryTrack.Getd2();
731 TVector tgl2=primaryTrack.Gettgl2();
732 TVector dtgl=primaryTrack.Getdtgl();
733 trackITS.Setd2(d2); trackITS.Settgl2(tgl2);
734 trackITS.Setdtgl(dtgl);
735 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2);
736 (*fresult).Setdtgl(dtgl);
737 /*
738 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
739 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
740 */
741 TList *list= new TList();
742
743 list->AddLast(&trackITS);
744
745 fPtref=TMath::Abs( (trackITS).GetPt() );
746 if(fPtref>1.0) fChi2max=40.;
747 if(fPtref<=1.0) fChi2max=20.;
748 if(fPtref<0.4 ) fChi2max=100.;
749 if(fPtref<0.2 ) fChi2max=40.;
750 // if(fPtref<0.4 ) fChi2max=30.;
751 // if(fPtref<0.2 ) fChi2max=20.;
752 //if(fPtref<0.2 ) fChi2max=10.;
753 //if(fPtref<0.1 ) fChi2max=5.;
64ab0d55 754 cout << "\n Pt = " << fPtref <<"\n"; //stampa
b48af428 755 RecursiveTracking(list);
756 list->Delete();
757 delete list;
758
759 Int_t itot=-1;
760 TVector vecTotLabRef(18);
761 Int_t lay, k;
762 for(lay=5; lay>=0; lay--) {
763 TVector vecLabRef(3);
764 vecLabRef=(*fresult).GetLabTrack(lay);
765 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
766 for(k=0; k<3; k++){
04b80329 767 Int_t lpp=(Int_t)vecLabRef(k);
768 if(lpp>=0) {
b48af428 769 TParticle *p=(TParticle*) gAlice->Particle(lpp);
770 Int_t pcode=p->GetPdgCode();
771 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
772 } // end if
773 itot++; vecTotLabRef(itot)=vecLabRef(k);
64ab0d55 774 if(vecLabRef(k)==0. && clustZ == -1.) vecTotLabRef(itot) =-3.;
b48af428 775 } // end for k
776 } // end for lay
777 Long_t labref;
778 Int_t freq;
779 (*fresult).Search(vecTotLabRef, labref, freq);
780
781 //if(freq < 6) labref=-labref; // cinque - sei
782 if(freq < 5) labref=-labref; // cinque - sei
783 (*fresult).SetLabel(labref);
784
785 // cout<<" progressive track number = "<<j<<"\r";
786 // cout<<j<<"\r";
787 Int_t numOfCluster=(*fresult).GetNumClust();
64ab0d55 788 cout<<" progressive track number = "<<j<<"\n"; // stampa
b48af428 789 Long_t labITS=(*fresult).GetLabel();
64ab0d55 790 cout << " ITS track label = " << labITS << "\n"; // stampa
b48af428 791 Int_t lab=track->GetLabel();
64ab0d55 792 cout << " TPC track label = " << lab <<"\n"; // stampa
b48af428 793 //propagation to vertex
794
795 Double_t rbeam=3.;
61231d74 796 if((*fresult).DoNotCross(rbeam)) continue; //no intersection with beampipe
b48af428 797 (*fresult).Propagation(rbeam);
798 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
799 (*fresult).GetCElements(c00,
800 c10,c11,
801 c20,c21,c22,
802 c30,c31,c32,c33,
803 c40,c41,c42,c43,c44);
13888096 804
b48af428 805 Double_t pt=TMath::Abs((*fresult).GetPt());
806 Double_t dr=(*fresult).GetD();
807 Double_t z=(*fresult).GetZ();
808 Double_t tgl=(*fresult).GetTgl();
809 Double_t c=(*fresult).GetC();
810 Double_t cy=c/2.;
811 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
812 dz-=vgeant(2);
813 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
814 Double_t phi=(*fresult).Getphi();
815 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
816 Double_t duepi=2.*TMath::Pi();
817 if(phivertex>duepi) phivertex-=duepi;
818 if(phivertex<0.) phivertex+=duepi;
819 /////////////////////////////////////////////////////////////
820 Int_t idmodule,idpoint;
821 if(numOfCluster >=5) { // cinque - sei
822 //if(numOfCluster ==6) { // cinque - sei
823 AliITSIOTrack outTrack;
824 ioTrack=&outTrack;
825 ioTrack->SetStatePhi(phi);
826 ioTrack->SetStateZ(z);
827 ioTrack->SetStateD(dr);
828 ioTrack->SetStateTgl(tgl);
829 ioTrack->SetStateC(c);
830 Double_t radius=(*fresult).Getrtrack();
831 ioTrack->SetRadius(radius);
832 Int_t charge;
833 if(c>0.) charge=-1; else charge=1;
834 ioTrack->SetCharge(charge);
835 ioTrack->SetCovMatrix(c00,
836 c10,c11,
837 c20,c21,c22,
838 c30,c31,c32,c33,
839 c40,c41,c42,c43,c44);
840 Double_t px=pt*TMath::Cos(phivertex);
841 Double_t py=pt*TMath::Sin(phivertex);
842 Double_t pz=pt*tgl;
843 Double_t xtrack=dr*TMath::Sin(phivertex);
844 Double_t ytrack=dr*TMath::Cos(phivertex);
845 Double_t ztrack=dz+vgeant(2);
846 ioTrack->SetPx(px);
847 ioTrack->SetPy(py);
848 ioTrack->SetPz(pz);
849 ioTrack->SetX(xtrack);
850 ioTrack->SetY(ytrack);
851 ioTrack->SetZ(ztrack);
852 ioTrack->SetLabel(labITS);
853 ioTrack->SetTPCLabel(lab);
61231d74 854 ioTrack->SetDz(dz);
b48af428 855 Int_t il;
856 for(il=0;il<6; il++){
857 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
858 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
859 } // end for il
860 tracktree1.Fill();
861 for (il=0;il<6;il++) {
862 idpoint=(*fresult).GetIdPoint(il);
863 idmodule=(*fresult).GetIdModule(il);
61231d74 864 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1;
865
b48af428 866 ioTrack->SetIdPoint(il,idpoint);
867 ioTrack->SetIdModule(il,idmodule);
868 } // end for il
869 } // end if on numOfCluster
870 //gObjectTable->Print(); // stampa memoria
871 } // end for (int j=minTr; j<=maxTr; j++)
61231d74 872 delete db;
b48af428 873 static Bool_t first=kTRUE;
874 static TFile *tfile;
875 if(first) {
876 tfile=new TFile("itstracks.root","RECREATE");
877 //cout<<"I have opened itstracks.root file "<<endl;
878 } // end if
879 first=kFALSE;
880 tfile->cd();
881 tfile->ls();
882 char hname[30];
883 sprintf(hname,"TreeT%d",evNumber);
884 tracktree1.Write(hname);
885
886 TTree *fAli=gAlice->TreeK();
887 TFile *fileAli=0;
888 if (fAli) fileAli =fAli->GetCurrentFile();
889 fileAli->cd();
890 ////////////////////////////////////////////////////////////////////
891
892 printf("delete vectors\n");
893 if(np) delete [] np;
894 if(fvettid) delete [] fvettid;
895 if(fresult) {delete fresult; fresult=0;}
04b80329 896}
b48af428 897//______________________________________________________________________
04b80329 898void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
b48af428 899 // This function perform the recursive tracking in ITS detectors
900 // reference is a pointer to the final best track
901 // Origin A. Badala' and G.S. Pappalardo:
902 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
903 // The authors thank Mariana Bondila to have help them to resolve some
904 // problems. July-2000
905
906 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9;
907 // Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
908
909 //////////////////////
910 Float_t sigmaphil[6], sigmazl[6];
911 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
912 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
913 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
914 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
915 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
916 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
917 sigmazl[0]=1e-2;
918 sigmazl[1]=1e-2;
919 sigmazl[2]=7.84e-4;
920 sigmazl[3]=7.84e-4;
921 sigmazl[4]=0.6889;
922 sigmazl[5]=0.6889;
923 ///////////////////////////////////////////////////////////
924 Int_t index;
925 AliITSgeom *g1 = fITS->GetITSgeom();
926 AliITSRecPoint *recp;
927 for(index =0; index<trackITSlist->GetSize(); index++) {
928 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
929 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
930 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
931 // cout<<"fvtrack =" <<"\n";
932 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "
933 // <<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "
934 // <<(*trackITS)(4)<<"\n";
935 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
936 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
937 // getchar();
938 Double_t chi2Now, chi2Ref;
939 Float_t numClustRef = fresult->GetNumClust();
940 if((*trackITS).GetLayer()==1 ) {
941 chi2Now = trackITS->GetChi2();
942 Float_t numClustNow = trackITS->GetNumClust();
943 if(trackITS->GetNumClust())
944 chi2Now /= (Double_t)trackITS->GetNumClust();
945 chi2Ref = fresult->GetChi2();
946 if(fresult->GetNumClust())
947 chi2Ref /= (Double_t)fresult->GetNumClust();
948 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
949 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
950 if((numClustNow == numClustRef )&&
951 (chi2Now < chi2Ref)) {
952 *fresult = *trackITS;
953 } // end if
954 continue;
955 } // end if
956
957 if(trackITS->Getfnoclust()>=2) continue;
958 Float_t numClustNow = trackITS->GetNumClust();
959 if(numClustNow) {
960 chi2Now = trackITS->GetChi2();
961
962 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
963 //cout<<" chi2Now = "<<chi2Now<<"\n";
64ab0d55 964
b48af428 965 chi2Now/=numClustNow;
966 if(fPtref > 1.0 && chi2Now > 30.) continue;
967 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
968 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
969 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
970 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
971 if(fPtref <= 0.2 && chi2Now > 7.) continue;
972 /////////////////////////////
973 } // end if
974
975 Int_t layerInit = (*trackITS).GetLayer();
976 Int_t layernew = layerInit - 2;// -1 for new layer, -1 for matrix index
977 TList listoftrack;
978 Int_t ladp, ladm, detp,detm,ladinters,detinters;
979 Int_t layerfin=layerInit-1;
980 // cout<<"Prima di intersection \n";
b48af428 981 Int_t outinters=Intersection(*trackITS,layerfin,ladinters,detinters);
b48af428 982 // cout<<" outinters = "<<outinters<<"\n";
983 // cout<<" Layer ladder detector intersection ="
984 // <<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
985 // cout << " phiinters zinters = "<<(*trackITS)(0)
986 // << " "<<(*trackITS)(1)<<"\n"; getchar();
987 if(outinters==-1) continue;
988 Int_t flaghit=0;
989 if(outinters==0){
990 TVector toucLad(9), toucDet(9);
991 Int_t lycur=layerfin;
992 ladp=ladinters+1;
993 ladm=ladinters-1;
994 if(ladm <= 0) ladm=fNlad[layerfin-1];
995 if(ladp > fNlad[layerfin-1]) ladp=1;
996 detp=detinters+1;
997 detm=detinters-1;
998 Int_t idetot=1;
999 /*
1000 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
1001 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
1002 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
1003 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
1004 if(detm > 0 && detp <= fNdet[layerfin-1]) {
1005 idetot=9;
1006 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1007 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
1008 } // end if
1009 if(detm > 0 && detp > fNdet[layerfin-1]) {
1010 idetot=6;
1011 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1012 } // end if
1013 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
1014 idetot=6;
1015 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
1016 } // end if
1017 */
f66ae545 1018 Float_t epsphi=5.0, epsz=5.0;
b48af428 1019 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
64ab0d55 1020 // new definition of idetot e toucLad e toucDet to be
b48af428 1021 // transformed in a method
1022 // these values could be modified
1023 Float_t pigre=TMath::Pi();
1024 Float_t rangephi=5., rangez=5.;
1025 if(layerfin==1 || layerfin ==2){
1026 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1027 (*trackITS).GetSigmaphi());
1028 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1029 (*trackITS).GetSigmaZ());
1030 } // end if
1031 if(layerfin==3 || layerfin ==4){
1032 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1033 // (*trackITS).GetSigmaphi());
1034 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+
1035 // (*trackITS).GetSigmaZ());
1036 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1037 (*trackITS).GetSigmaphi());
1038 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1039 (*trackITS).GetSigmaZ());
1040 } // end if
1041 if(layerfin==5 || layerfin ==6){
1042 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1043 (*trackITS).GetSigmaphi());
1044 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1045 (*trackITS).GetSigmaZ());
1046 } // end if
1047 Float_t phinters, zinters;
1048 phinters=(*trackITS).Getphi();
1049 zinters=(*trackITS).GetZ();
1050 Float_t distz = 0.0;
1051 Float_t phicm, phicp, distphim, distphip;
1052 phicm=phinters;
cf411bb5 1053 if(phinters>fphimax[layerfin-1][ladm-1]) phicm=phinters-2*pigre; //corretto il 20-11-2001
1054 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm-1]); //corretto il 20-11-2001
b48af428 1055 phicp=phinters;
cf411bb5 1056 //cout<<" fNlad[layerfin-1] e ladp = "<<fNlad[layerfin-1]<<" "<<ladp<<endl;
1057 if(phinters>fphimin[layerfin-1][ladp-1]) phicp=phinters-2.*pigre; //corretto il 20-11-2001
1058 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp-1]); //corretto il 20-11-2001
b48af428 1059 Int_t flagzmin=0;
1060 Int_t flagzmax=0;
1061 idetot=1;
1062 toucLad(0)=ladinters; toucDet(0)=detinters;
1063 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
1064 if(detm>0 && rangez>=distz){
1065 flagzmin=1;
1066 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
1067 if(rangephi>=distphim){
1068 idetot++;
1069 toucLad(idetot-1)=ladm;
1070 toucDet(idetot-1)=detinters;
1071 idetot++;
1072 toucLad(idetot-1)=ladm;
1073 toucDet(idetot-1)=detm;
1074 } // end if
1075 if(rangephi>=distphip){
1076 idetot++;
1077 toucLad(idetot-1)=ladp;
1078 toucDet(idetot-1)=detinters;
1079 idetot++;
1080 toucLad(idetot-1)=ladp;
1081 toucDet(idetot-1)=detm;
1082 } // end if
1083 } //end detm>0....
1084 if(detp<=fNdet[layerfin-1])
1085 distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
1086 if(detp<=fNdet[layerfin-1] && rangez>=distz){
1087 flagzmax=1;
1088 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
1089 if(rangephi>=distphim){
1090 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
1091 if(flagzmin == 0) {
1092 idetot++;
1093 toucLad(idetot-1)=ladm;
1094 toucDet(idetot-1)=detinters;
1095 } // end if
1096 } // end if
1097 if(rangephi>=distphip){
1098 idetot++;
1099 toucLad(idetot-1)=ladp;
1100 toucDet(idetot-1)=detp;
1101 if(flagzmin == 0) {
1102 idetot++;
1103 toucLad(idetot-1)=ladp;
1104 toucDet(idetot-1)=detinters;
1105 } // end if
1106 } // end if
1107 } //end detm<fNdet[.......
1108
1109 if(flagzmin == 0 && flagzmax==0){
1110 if(rangephi>=distphim){
1111 idetot++;
1112 toucLad(idetot-1)=ladm;
1113 toucDet(idetot-1)=detinters;
1114 } // end if
1115 if(rangephi>=distphip){
1116 idetot++;
1117 toucLad(idetot-1)=ladp;
1118 toucDet(idetot-1)=detinters;
1119 } // end if
1120 } // end if
1121 ////////////////////////////////////////////////////////////
1122 Int_t iriv;
1123 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
1124 ///////////////////////////////////////////////////////
1125 /*** Rec points sorted by module *****/
1126 /**************************************/
64ab0d55 1127 Int_t indexmod;
b48af428 1128 indexmod = g1->GetModuleIndex(lycur,(Int_t)toucLad(iriv),
64ab0d55 1129 (Int_t)toucDet(iriv));
b48af428 1130 fITS->ResetRecPoints();
1131 gAlice->TreeR()->GetEvent(indexmod);
1132 Int_t npoints=frecPoints->GetEntries();
64ab0d55 1133
b48af428 1134 Int_t indnew;
1135 for(indnew=0; indnew<npoints; indnew++){
1136 if (*(fvettid[indexmod]+indnew)==0)
1137 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
1138 else
f66ae545 1139 continue;
b48af428 1140 TVector cluster(3),vecclust(9);
64ab0d55 1141 //vecclust(6)=vecclust(7)=vecclust(8)=-1.;
1142 Double_t sigma[2];
1143 // now vecclust is with cylindrical cohordinates
1144 vecclust(0)=(Float_t)fRecCylR[indexmod][indnew];
1145 vecclust(1)=(Float_t)fRecCylPhi[indexmod][indnew];
1146 vecclust(2)=(Float_t)fRecCylZ[indexmod][indnew];
b48af428 1147 vecclust(3) = (Float_t)recp->fTracks[0];
b48af428 1148 vecclust(4) = (Float_t)indnew;
64ab0d55 1149 vecclust(5) = (Float_t)indexmod;
b48af428 1150 vecclust(6) = (Float_t)recp->fTracks[0];
1151 vecclust(7) = (Float_t)recp->fTracks[1];
1152 vecclust(8) = (Float_t)recp->fTracks[2];
1153 sigma[0] = (Double_t) recp->GetSigmaX2();
1154 sigma[1] = (Double_t) recp->GetSigmaZ2();
64ab0d55 1155
1156 cluster(0)=fRecCylR[indexmod][indnew];
1157 cluster(1)=fRecCylPhi[indexmod][indnew];
1158 cluster(2)=fRecCylZ[indexmod][indnew];
1159
b48af428 1160 // cout<<" layer = "<<play<<"\n";
1161 // cout<<" cluster prima = "<<vecclust(0)<<" "
1162 // <<vecclust(1)<<" "
1163 // <<vecclust(2)<<"\n"; getchar();
1164
1165 Float_t sigmatotphi, sigmatotz;
1166 // Float_t epsphi=5.0, epsz=5.0;
1167 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
1168 Double_t rTrack=(*trackITS).Getrtrack();
1169 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
1170 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi +
1171 (*trackITS).GetSigmaphi());
1172 sigmatotz=epsz*TMath::Sqrt(sigma[1] +
1173 (*trackITS).GetSigmaZ());
1174 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)
1175 // <<" "<<cluster(1)<<" "<<sigmatotphi<<" "
1176 // <<vecclust(3)<<"\n";
1177 //if(vecclust(3)==481) getchar();
1178 if(cluster(1)<6. && (*trackITS).Getphi()>6.)
1179 cluster(1)=cluster(1)+(2.*TMath::Pi());
1180 if(cluster(1)>6. && (*trackITS).Getphi()<6.)
1181 cluster(1)=cluster(1)-(2.*TMath::Pi());
1182 if(TMath::Abs(cluster(1)-(*trackITS).Getphi())>sigmatotphi)
1183 continue;
1184 // cout<<" supero sigmaphi \n";
1185 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
1186 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
1187 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
1188 (*newTrack).Correct(Double_t(cluster(0)));
1189 //cout<<" cluster(2) e(*newTrack).GetZ()="<<cluster(2)<<" "
1190 // << (*newTrack).GetZ()<<"\n";
1191 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
1192 delete newTrack;
1193 continue;
1194 } // end if
1195 Double_t sigmanew[2];
1196 sigmanew[0]= sigmaphi;
1197 sigmanew[1]=sigma[1];
1198 Double_t m[2];
1199 m[0]=cluster(1);
1200 m[1]=cluster(2);
1201 // Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
1202 // cout<<" chi2pred = "<<chi2pred<<"\n";
1203 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
1204 if(iriv == 0) flaghit=1;
1205 (*newTrack).AddMS(frl); // add the multiple scattering
1206 //matrix to the covariance matrix
1207 (*newTrack).AddEL(frl,1.,0);
1208
b48af428 1209 if(fflagvert){
1210 KalmanFilterVert(newTrack,cluster,sigmanew);
1211 //KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
1212 }else{
1213 KalmanFilter(newTrack,cluster,sigmanew);
1214 } // end if
b48af428 1215 (*newTrack).PutCluster(layernew, vecclust);
1216 newTrack->AddClustInTrack();
1217 listoftrack.AddLast(newTrack);
1218 } // end for indnew
b48af428 1219 } // end of for on detectors (iriv)
1220 }//end if(outinters==0)
1221
1222 if(flaghit==0 || outinters==-2) {
1223 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
1224 (*newTrack).Setfnoclust();
1225 (*newTrack).SetLayer((*trackITS).GetLayer()-1);
1226 (*newTrack).AddMS(frl); // add the multiple scattering matrix
1227 // to the covariance matrix
1228 (*newTrack).AddEL(frl,1.,0);
1229 listoftrack.AddLast(newTrack);
1230 } // end if
1231
1232 //gObjectTable->Print(); // stampa memoria
04b80329 1233
b48af428 1234 RecursiveTracking(&listoftrack);
1235 listoftrack.Delete();
1236 } // end of for on tracks (index)
04b80329 1237
b48af428 1238 //gObjectTable->Print(); // stampa memoria
13888096 1239}
b48af428 1240//______________________________________________________________________
1241Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track,Int_t layer,
1242 Int_t &ladder,Int_t &detector) {
1243 // Origin A. Badala' and G.S. Pappalardo
1244 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1245 // Found the intersection and the detector
1246
1247 Double_t rk=fAvrad[layer-1];
1248 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1249 track.Propagation(rk);
1250 Double_t zinters=track.GetZ();
1251 Double_t phinters=track.Getphi();
1252 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
1253
1254 TVector det(9);
1255 TVector listDet(2);
1256 TVector distZCenter(2);
1257
1258 Int_t iz=0;
1259 Int_t iD;
1260 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
1261 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1262 if(iz>1) {
1263 cout<< " Errore su iz in Intersection \n";
1264 getchar();
1265 }else {
1266 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2));
1267 iz++;
1268 } // end if
1269 } // end if
1270 } // end for iD
1271
1272 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1273 detector=Int_t (listDet(0));
1274 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
1275
1276 TVector listLad(2);
1277 TVector distPhiCenter(2);
1278 Int_t ip=0;
1279 Double_t pigre=TMath::Pi();
1280 Int_t iLd;
1281 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1282 Double_t phimin=fphimin[layer-1][iLd-1];
1283 Double_t phimax=fphimax[layer-1][iLd-1];
1284 Double_t phidet=fphidet[layer-1][iLd-1];
1285 Double_t phiconfr=phinters;
1286 if(phimin>phimax) {
1287 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n";
1288 // getchar();}
1289 phimin-=(2.*pigre);
1290 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1291 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
1292 } // end if
1293 if(phiconfr>phimin && phiconfr<= phimax) {
1294 if(ip>1) {
1295 cout<< " Errore su ip in Intersection \n"; getchar();
1296 }else {
1297 listLad(ip)= iLd;
1298 distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1299 } // end if
1300 } // end if
1301 } // end for iLd
1302 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1303 ladder=Int_t (listLad(0));
1304 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
1305 return 0;
1306}
1307//______________________________________________________________________
1308void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,
1309 Double_t sigma[2]){
1310 //Origin A. Badala' and G.S. Pappalardo:
1311 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1312 // Kalman filter without vertex constraint
1313 ////// Evaluation of the measurement vector ////////////////////////
1314 Double_t m[2];
1315 Double_t rk,phik,zk;
1316 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1317 m[0]=phik; m[1]=zk;
1318 //////////////////////// Evaluation of the error matrix V /////////
1319 Double_t v00=sigma[0];
1320 Double_t v11=sigma[1];
1321 ////////////////////////////////////////////////////////////////////
1322 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,
1323 cin32,cin42,cin33,cin43,cin44;
1324
1325 newTrack->GetCElements(cin00,
1326 cin10,cin11,
1327 cin20,cin21,cin22,
1328 cin30,cin31,cin32,cin33,
1329 cin40,cin41,cin42,cin43,cin44); //get C matrix
1330 Double_t rold00=cin00+v00;
1331 Double_t rold10=cin10;
1332 Double_t rold11=cin11+v11;
1333 ////////////////////// R matrix inversion /////////////////////////
1334 Double_t det=rold00*rold11-rold10*rold10;
1335 Double_t r00=rold11/det;
1336 Double_t r10=-rold10/det;
1337 Double_t r11=rold00/det;
1338 ////////////////////////////////////////////////////////////////////
1339 Double_t k00=cin00*r00+cin10*r10;
1340 Double_t k01=cin00*r10+cin10*r11;
1341 Double_t k10=cin10*r00+cin11*r10;
1342 Double_t k11=cin10*r10+cin11*r11;
1343 Double_t k20=cin20*r00+cin21*r10;
1344 Double_t k21=cin20*r10+cin21*r11;
1345 Double_t k30=cin30*r00+cin31*r10;
1346 Double_t k31=cin30*r10+cin31*r11;
1347 Double_t k40=cin40*r00+cin41*r10;
1348 Double_t k41=cin40*r10+cin41*r11;
1349 Double_t x0,x1,x2,x3,x4;
1350 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1351 Double_t savex0=x0, savex1=x1;
1352 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1353 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1354 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1355 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1356 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1357 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1358 c00=cin00-k00*cin00-k01*cin10;
1359 c10=cin10-k00*cin10-k01*cin11;
1360 c20=cin20-k00*cin20-k01*cin21;
1361 c30=cin30-k00*cin30-k01*cin31;
1362 c40=cin40-k00*cin40-k01*cin41;
1363 c11=cin11-k10*cin10-k11*cin11;
1364 c21=cin21-k10*cin20-k11*cin21;
1365 c31=cin31-k10*cin30-k11*cin31;
1366 c41=cin41-k10*cin40-k11*cin41;
1367 c22=cin22-k20*cin20-k21*cin21;
1368 c32=cin32-k20*cin30-k21*cin31;
1369 c42=cin42-k20*cin40-k21*cin41;
1370 c33=cin33-k30*cin30-k31*cin31;
1371 c43=cin43-k30*cin40-k31*cin41;
1372 c44=cin44-k40*cin40-k41*cin41;
1373 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1374 newTrack->PutCElements(c00,
1375 c10,c11,
1376 c20,c21,c22,
1377 c30,c31,c32,c33,
1378 c40,c41,c42,c43,c44); // put in track the
1379 // new cov matrix
1380 Double_t vmcold00=v00-c00;
1381 Double_t vmcold10=-c10;
1382 Double_t vmcold11=v11-c11;
1383 ////////////////////// Matrix vmc inversion ///////////////////////
1384 det=vmcold00*vmcold11-vmcold10*vmcold10;
1385 Double_t vmc00=vmcold11/det;
1386 Double_t vmc10=-vmcold10/det;
1387 Double_t vmc11=vmcold00/det;
1388 ////////////////////////////////////////////////////////////////////
1389 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1390 (m[1]-x1)*vmc11*(m[1]-x1);
04b80329 1391 newTrack->SetChi2(newTrack->GetChi2()+chi2);
b48af428 1392}
1393//----------------------------------------------------------------------
1394//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1395// TVector &cluster,Double_t sigma[2]){
1396void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1397 TVector &cluster,Double_t sigma[2]
1398 /*, Double_t chi2pred*/){
1399 //Origin A. Badala' and G.S. Pappalardo:
1400 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1401 // Kalman filter with vertex constraint
1402 ///////////////////// Evaluation of the measurement vector m ////////
1403 Double_t m[4];
1404 Double_t rk,phik,zk;
1405 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1406 m[0]=phik; m[1]=zk;
1407 Double_t cc=(*newTrack).GetC();
1408 Double_t zv=(*newTrack).GetZv();
1409 Double_t dv=(*newTrack).GetDv();
1410 Double_t cy=cc/2.;
1411 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1412 m[2]=dv; m[3]=tgl;
1413 /////////////////////// Evaluation of the error matrix V //////////
1414 Int_t layer=newTrack->GetLayer();
1415 Double_t v00=sigma[0];
1416 Double_t v11=sigma[1];
1417 Double_t v31=sigma[1]/rk;
1418 Double_t sigmaDv=newTrack->GetsigmaDv();
1419 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1420 Double_t v32=newTrack->Getdtgl(layer-1);
1421 Double_t sigmaZv=newTrack->GetsigmaZv();
1422 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+newTrack->Gettgl2(layer-1);
1423 //////////////////////////////////////////////////////////////////
1424 Double_t cin00,cin10,cin11,cin20,cin21,cin22,
1425 cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1426 newTrack->GetCElements(cin00,
1427 cin10,cin11,
1428 cin20,cin21,cin22,
1429 cin30,cin31,cin32,cin33,
1430 cin40,cin41,cin42,cin43,cin44); //get C matrix
1431 Double_t r[4][4];
1432 r[0][0]=cin00+v00;
1433 r[1][0]=cin10;
1434 r[2][0]=cin20;
1435 r[3][0]=cin30;
1436 r[1][1]=cin11+v11;
1437 r[2][1]=cin21;
1438 r[3][1]=cin31+sigma[1]/rk;
1439 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1440 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1441 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+
1442 newTrack->Gettgl2(layer-1);
1443 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0];
1444 r[1][2]=r[2][1]; r[1][3]=r[3][1]; r[2][3]=r[3][2];
1445 ///////////////////// Matrix R inversion //////////////////////////
1446 const Int_t kn=4;
1447 Double_t big, hold;
1448 Double_t d=1.;
1449 Int_t ll[kn],mm[kn];
1450 Int_t i,j,k;
1451
1452 for(k=0; k<kn; k++) {
1453 ll[k]=k;
1454 mm[k]=k;
1455 big=r[k][k];
1456 for(j=k; j<kn ; j++) {
1457 for (i=j; i<kn; i++) {
1458 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) {
1459 big=r[i][j];
1460 ll[k]=i;
1461 mm[k]=j;
1462 } // end if
1463 } // end for i
1464 } // end for j
1465 //
1466 j= ll[k];
1467 if(j > k) {
1468 for(i=0; i<kn; i++) {
1469 hold=-r[k][i];
1470 r[k][i]=r[j][i];
1471 r[j][i]=hold;
1472 } // end for i
1473 }// end if
1474 //
1475 i=mm[k];
1476 if(i > k ) {
1477 for(j=0; j<kn; j++) {
1478 hold=-r[j][k];
1479 r[j][k]=r[j][i];
1480 r[j][i]=hold;
1481 } // end for j
1482 } // end if
1483 //
1484 if(!big) {
1485 d=0.;
1486 cout << "Singular matrix\n";
1487 } // end if
1488 for(i=0; i<kn; i++) {
1489 if(i == k) { continue; }
1490 r[i][k]=r[i][k]/(-big);
1491 } // end for i
1492 //
1493 for(i=0; i<kn; i++) {
1494 hold=r[i][k];
1495 for(j=0; j<kn; j++) {
1496 if(i == k || j == k) continue;
1497 r[i][j]=hold*r[k][j]+r[i][j];
1498 } // end for j
1499 } // end of ri
1500 //
1501 for(j=0; j<kn; j++) {
1502 if(j == k) continue;
1503 r[k][j]=r[k][j]/big;
1504 } // end for j
1505 //
1506 d=d*big;
1507 //
1508 r[k][k]=1./big;
1509 } // end for k
1510 //
1511 for(k=kn-1; k>=0; k--) {
1512 i=ll[k];
1513 if(i > k) {
1514 for (j=0; j<kn; j++) {
1515 hold=r[j][k];
1516 r[j][k]=-r[j][i];
1517 r[j][i]=hold;
1518 } // end for j
1519 } // end if i
1520 j=mm[k];
1521 if(j > k) {
1522 for (i=0; i<kn; i++) {
1523 hold=r[k][i];
1524 r[k][i]=-r[j][i];
1525 r[j][i]=hold;
1526 } // end for i
1527 } // end if
1528 } // end for k
1529 ////////////////////////////////////////////////////////////////////
1530 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1531 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1532 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1533 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1534 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1535 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1536 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1537 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1538 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1539 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1540 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1541 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1542 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1543 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1544 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1545 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1546 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1547 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1548 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1549 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1550
1551 Double_t x0,x1,x2,x3,x4;
1552 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1553 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1554 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1555 k03*(m[3]-savex3);
1556 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1557 k13*(m[3]-savex3);
1558 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1559 k23*(m[3]-savex3);
1560 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1561 k33*(m[3]-savex3);
1562 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1563 k43*(m[3]-savex3);
1564 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1565 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1566 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1567 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1568 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1569 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1570 c11=cin11-k10*cin10-k11*cin11-k12*cin21-k13*cin31;
1571 c21=cin21-k10*cin20-k11*cin21-k12*cin22-k13*cin32;
1572 c31=cin31-k10*cin30-k11*cin31-k12*cin32-k13*cin33;
1573 c41=cin41-k10*cin40-k11*cin41-k12*cin42-k13*cin43;
1574 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1575 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1576 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1577 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1578 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1579 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1580
1581 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1582 newTrack->PutCElements(c00,
1583 c10,c11,
1584 c20,c21,c22,
1585 c30,c31,c32,c33,
1586 c40,c41,c42,c43,c44); // put in track the
1587 // new cov matrix
1588 Double_t vmc[4][4];
1589 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1590 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1591 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1592 vmc[3][3]=v33-c33;
1593 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1594 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1595 vmc[2][3]=vmc[3][2];
1596 /////////////////////// vmc matrix inversion ///////////////////////
1597 d=1.;
1598 for(k=0; k<kn; k++) {
1599 ll[k]=k;
1600 mm[k]=k;
1601 big=vmc[k][k];
1602 for(j=k; j<kn ; j++) {
1603 for (i=j; i<kn; i++) {
1604 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) {
1605 big=vmc[i][j];
1606 ll[k]=i;
1607 mm[k]=j;
1608 } // end if
1609 } // end for i
1610 } // end for j
1611 //
1612 j= ll[k];
1613 if(j > k) {
1614 for(i=0; i<kn; i++) {
1615 hold=-vmc[k][i];
1616 vmc[k][i]=vmc[j][i];
1617 vmc[j][i]=hold;
1618 } // end for i
1619 } // end if
1620 //
1621 i=mm[k];
1622 if(i > k ) {
1623 for(j=0; j<kn; j++) {
1624 hold=-vmc[j][k];
1625 vmc[j][k]=vmc[j][i];
1626 vmc[j][i]=hold;
1627 } // end for j
1628 } // end if
1629 //
1630 if(!big) {
1631 d=0.;
1632 cout << "Singular matrix\n";
1633 } // end if
1634 for(i=0; i<kn; i++) {
1635 if(i == k) continue;
1636 vmc[i][k]=vmc[i][k]/(-big);
1637 } // end for i
1638 //
1639 for(i=0; i<kn; i++) {
1640 hold=vmc[i][k];
1641 for(j=0; j<kn; j++) {
1642 if(i == k || j == k) continue;
1643 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1644 } // end for j
1645 } // end for i
1646 //
1647 for(j=0; j<kn; j++) {
1648 if(j == k) continue;
1649 vmc[k][j]=vmc[k][j]/big;
1650 } // end for j
1651 //
1652 d=d*big;
1653 //
1654 vmc[k][k]=1./big;
1655 } // end for k
1656 //
1657 for(k=kn-1; k>=0; k--) {
1658 i=ll[k];
1659 if(i > k) {
1660 for (j=0; j<kn; j++) {
1661 hold=vmc[j][k];
1662 vmc[j][k]=-vmc[j][i];
1663 vmc[j][i]=hold;
1664 } // end for j
1665 } // end if i>k
1666 j=mm[k];
1667 if(j > k) {
1668 for (i=0; i<kn; i++) {
1669 hold=vmc[k][i];
1670 vmc[k][i]=-vmc[j][i];
1671 vmc[j][i]=hold;
1672 } // end for i
1673 } // end if j>k
1674 } // end for k
1675 ////////////////////////////////////////////////////////////////////
1676 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1677 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) )+
1678 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1679 2.*vmc[3][1]*(m[3]-x3) ) +
1680 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
1681 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1682 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
1683 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1684 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
1685}