Names changed in order to avoid clash with FLUKA.
[u/mrichter/AliRoot.git] / ITS / AliITSTrackerV1.cxx
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b48af428 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
61ab8ea8 17
af50998a 18// The purpose of this class is to permorm the ITS tracking. The
b48af428 19// constructor has the task to inizialize some private members. The method
20// DoTracking is written to be called by a macro. It gets the event number,
21// the minimum and maximum order number of TPC tracks that are to be tracked
22// trough the ITS, and the file where the recpoints are registered. The
23// method Recursivetracking is a recursive function that performs the
24// tracking trough the ITS The method Intersection found the layer, ladder
25// and detector whre the intersection take place and caluclate the
26// cohordinates of this intersection. It returns an integer that is 0 if the
27// intersection has been found successfully. The two mwthods Kalmanfilter
28// and kalmanfiltervert operate the kalmanfilter without and with the vertex
29// imposition respectively. The authors thank Mariana Bondila to have help
30// them to resolve some problems. July-2000
04b80329 31
4ae5bbc4 32#include <Riostream.h>
33#include <Riostream.h>
13888096 34#include <TMath.h>
13888096 35#include <TBranch.h>
36#include <TVector.h>
13888096 37#include <TFile.h>
38#include <TTree.h>
cbcfa38d 39#include <TStopwatch.h>
40
13888096 41#include "TParticle.h"
42#include "AliRun.h"
88cb7938 43#include "AliLoader.h"
13888096 44#include "AliITS.h"
04b80329 45#include "AliITSsegmentationSSD.h"
13888096 46#include "AliITSgeomSPD.h"
47#include "AliITSgeomSDD.h"
48#include "AliITSgeomSSD.h"
49#include "AliITSgeom.h"
13888096 50#include "AliITSRecPoint.h"
04b80329 51#include "stdlib.h"
13888096 52#include "AliKalmanTrack.h"
53#include "AliMagF.h"
04b80329 54#include "AliITSTrackV1.h"
55#include "AliITSIOTrack.h"
56#include "AliITSRad.h"
13888096 57#include "../TPC/AliTPCtracker.h"
13888096 58#include "AliITSTrackerV1.h"
0983ac5b 59#include "AliITSVertex.h"
def162f4 60#include "AliITSPid.h"
13888096 61
13888096 62ClassImp(AliITSTrackerV1)
55cd883f 63 //______________________________________________________________________
64AliITSTrackerV1::AliITSTrackerV1() {
65 //Default constructor
66 fITS = 0;
67 fresult = 0;
64ab0d55 68 fPtref=0.;
69 fChi2max=0.;
70 //fepsphi=0.;
71 //fepsz=0.;
55cd883f 72 frecPoints = 0;
73 fvettid = 0;
64ab0d55 74 fflagvert=0;
55cd883f 75 frl = 0;
64ab0d55 76 Int_t ia;
77 for(ia=0; ia<6; ia++) {
78 fNlad[ia]=0;
79 fNdet[ia]=0;
80 fAvrad[ia]=0.;
81 fDetx[ia]=0.;
82 fDetz[ia]=0.;
83 } // end for ia
55cd883f 84 fzmin = 0;
85 fzmax = 0;
86 fphimin = 0;
87 fphimax = 0;
88 fphidet = 0;
64ab0d55 89 fNRecPoints=0;
90 fRecCylR=0;
91 fRecCylPhi=0;
92 fRecCylZ=0;
93 fFieldFactor=0;
55cd883f 94}
b48af428 95//______________________________________________________________________
64ab0d55 96AliITSTrackerV1::AliITSTrackerV1(AliITS* IITTSS, Int_t evnumber, Bool_t flag) {
b48af428 97 //Origin A. Badala' and G.S. Pappalardo:
98 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
99 // Class constructor. It does some initializations.
100
a49bb2c8 101 //PH Initialisation taken from the default constructor
b48af428 102 fITS = IITTSS;
a49bb2c8 103 fresult = 0;
64ab0d55 104 fPtref = 0.;
105 fChi2max =0.;
106 frecPoints = 0;
a49bb2c8 107 fvettid = 0;
64ab0d55 108 fflagvert = flag;
a49bb2c8 109 frl = 0;
110 fzmin = 0;
111 fzmax = 0;
112 fphimin = 0;
113 fphimax = 0;
114 fphidet = 0;
64ab0d55 115
b48af428 116 Int_t imax = 200,jmax = 450;
117 frl = new AliITSRad(imax,jmax);
118
119 ////////// gets information on geometry /////////////////////////////
64ab0d55 120 AliITSgeom *g1 = fITS->GetITSgeom();
b48af428 121 Int_t ll=1, dd=1;
122 TVector det(9);
123
b48af428 124 Int_t ia;
125 for(ia=0; ia<6; ia++) {
126 fNlad[ia]=g1->GetNladders(ia+1);
127 fNdet[ia]=g1->GetNdetectors(ia+1);
128 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
129 } // end for ia
b48af428 130
64ab0d55 131 //cout<<" mean radius = ";
b48af428 132 Int_t ib;
133 for(ib=0; ib<6; ib++) {
134 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
135 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
136 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
137 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
138 fAvrad[ib]=(r1+r2)/2.;
139 //cout<<fAvrad[ib]<<" ";
140 } // end for ib
141 //cout<<"\n"; getchar();
142
143 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
144 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
145
146 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
147 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
148
149 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
150 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
151
152 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
153 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
154
155 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
156 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
157
158 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
159 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
160 //cout<<" Detx Detz\n";
161 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<
162 // fDetz[la]<<endl;
163 //getchar();
64ab0d55 164
b48af428 165 // allocate memory and define matrices fzmin, fzmax, fphimin and fphimax //
166 Double_t epsz=1.2;
167 Double_t epszdrift=0.05;
168
169 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
170 Int_t im1, im2, im2max;
171 for(im1=0; im1<6; im1++) {
172 im2max=fNdet[im1];
173 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
174 } // end for im1
175
176 for(im1=0; im1<6; im1++) {
177 im2max=fNdet[im1];
178 for(im2=0; im2<im2max; im2++) {
179 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
180 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
181 else
182 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
183 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
184 else
cbcfa38d 185 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
b48af428 186 if(im1==2 || im1==3) {
187 fzmin[im1][im2]-=epszdrift;
188 fzmax[im1][im2]+=epszdrift;
189 } // end if im1==2 || im1==3
190 } // end for im2
191 } // end for im1
13888096 192
b48af428 193 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
194 for(im1=0;im1<6;im1++) {
195 im2max=fNlad[im1];
196 fphimin[im1] = new Double_t[im2max];
197 fphimax[im1] = new Double_t[im2max];
198 } // end for im1
199
200 fphidet = new Double_t*[6];
201 for(im1=0; im1<6; im1++) {
202 im2max=fNlad[im1];
203 fphidet[im1] = new Double_t[im2max];
204 } // end for im1
205
def162f4 206 Double_t global[3],local[3];
b48af428 207 Double_t pigre=TMath::Pi();
208 Double_t xmin,ymin,xmax,ymax;
209
210 for(im1=0; im1<6; im1++) {
211 im2max=fNlad[im1];
212 for(im2=0; im2<im2max; im2++) {
213 Int_t idet=2;
214 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
215 fphidet[im1][im2] = TMath::ATan2(Double_t(det(1)),
216 Double_t(det(0)));
217 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
218 local[1]=local[2]=0.;
219 local[0]= -(fDetx[im1]);
220 if(im1==0) local[0]= (fDetx[im1]); //to take into account
221 // different reference system
222 g1->LtoG(im1+1,im2+1,idet,local,global);
223 xmax=global[0]; ymax=global[1];
224 local[0]= (fDetx[im1]);
225 if(im1==0) local[0]= -(fDetx[im1]);//take into account different
226 // reference system
227 g1->LtoG(im1+1,im2+1,idet,local,global);
228 xmin=global[0]; ymin=global[1];
229 fphimin[im1][im2]= TMath::ATan2(ymin,xmin);
230 if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
231 fphimax[im1][im2]= TMath::ATan2(ymax,xmax);
232 if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
233 } // end for im2
234 } // end for im1
64ab0d55 235//////////////////////////////////////////////////////////////////////////////////////////////////////////
236/////////////// allocate memory and define vector fNRecPoints and matrices fRecCylR, fRecCylPhi, fRecCylZ /////////////
237 gAlice->GetEvent(evnumber);
238 Int_t NumOfModules = g1->GetIndexMax();
64ab0d55 239 fRecCylR = new Double_t *[NumOfModules];
64ab0d55 240 fRecCylPhi = new Double_t *[NumOfModules];
64ab0d55 241 fRecCylZ = new Double_t *[NumOfModules];
242 AliITSRecPoint *recp;
243 fNRecPoints = new Int_t[NumOfModules];
244
245 for(Int_t module=0; module<NumOfModules; module++) {
246 fITS->ResetRecPoints();
247 gAlice->TreeR()->GetEvent(module);
248 frecPoints=fITS->RecPoints();
249 Int_t nRecPoints=fNRecPoints[module]=frecPoints->GetEntries();
64ab0d55 250 fRecCylR[module] = new Double_t[nRecPoints];
251 fRecCylPhi[module] = new Double_t[nRecPoints];
252 fRecCylZ[module] = new Double_t[nRecPoints];
253 Int_t ind;
254 for(ind=0; ind<fNRecPoints[module]; ind++) {
255 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(ind);
256 // Float_t global[3], local[3];
257 Double_t global[3], local[3];
258 local[0]=recp->GetX();
259 local[1]=0.;
260 local[2]= recp->GetZ();
261 g1->LtoG(module,local,global);
64ab0d55 262
263 Double_t r = TMath::Sqrt(global[0]*global[0]+global[1]*global[1]); // r hit
264 Double_t phi = TMath::ATan2(global[1],global[0]); if(phi<0.) phi+=2.*TMath::Pi(); // phi hit
def162f4 265 Double_t z = global[2]; // z hit
64ab0d55 266
267 fRecCylR[module][ind]=r;
268 fRecCylPhi[module][ind]=phi;
269 fRecCylZ[module][ind]=z;
270 }
271 }
272 //}
273 //}
274////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
275
b48af428 276
277 ////////// gets magnetic field factor //////////////////////////////
278
279 AliMagF * fieldPointer = gAlice->Field();
af50998a 280 // fFieldFactor = (Double_t)fieldPointer->Factor();
281 fFieldFactor =(Double_t)fieldPointer-> SolenoidField()/10/.2;
282 // cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
b48af428 283}
284//______________________________________________________________________
04b80329 285AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) {
b48af428 286 // Origin A. Badala' and G.S. Pappalardo:
287 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
288 // copy constructor
64ab0d55 289
290 *fITS = *cobj.fITS;
b48af428 291 *fresult = *cobj.fresult;
292 fPtref = cobj.fPtref;
293 fChi2max = cobj.fChi2max;
294 **fvettid = **cobj.fvettid;
295 fflagvert = cobj.fflagvert;
296 Int_t imax=200,jmax=450;
297 frl = new AliITSRad(imax,jmax);
298 *frl = *cobj.frl;
299 fFieldFactor = cobj.fFieldFactor;
300 Int_t i,im1,im2,im2max;
301 for(i=0; i<6; i++) {
302 fNlad[i] = cobj.fNlad[i];
303 fNdet[i] = cobj.fNdet[i];
304 fAvrad[i] = cobj.fAvrad[i];
305 fDetx[i] = cobj.fDetx[i];
306 fDetz[i] = cobj.fDetz[i];
307 } // end or i
308 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
309 for(im1=0; im1<6; im1++) {
310 im2max=fNdet[im1];
311 fzmin[im1] = new Double_t[im2max];
312 fzmax[im1] = new Double_t[im2max];
313 } // end for im1
cbcfa38d 314 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 315 for(im1=0;im1<6;im1++) {
316 im2max=fNlad[im1];
317 fphimin[im1] = new Double_t[im2max];
318 fphimax[im1] = new Double_t[im2max];
319 } // end for im1
320
321 fphidet = new Double_t*[6];
322 for(im1=0; im1<6; im1++) {
323 im2max=fNlad[im1];
324 fphidet[im1] = new Double_t[im2max];
325 } // end for im1
326 for(im1=0; im1<6; im1++) {
327 im2max=fNdet[im1];
328 for(im2=0; im2<im2max; im2++) {
329 fzmin[im1][im2]=cobj.fzmin[im1][im2];
330 fzmax[im1][im2]=cobj.fzmax[im1][im2];
331 } // end for im2
332 } // end for im1
333 for(im1=0; im1<6; im1++) {
334 im2max=fNlad[im1];
335 for(im2=0; im2<im2max; im2++) {
336 fphimin[im1][im2]=cobj.fphimin[im1][im2];
337 fphimax[im1][im2]=cobj.fphimax[im1][im2];
338 fphidet[im1][im2]=cobj.fphidet[im1][im2];
339 } // end for im2
340 } // end for im2
64ab0d55 341
342
343 AliITSgeom *g1 = fITS->GetITSgeom();
344 Int_t NumOfModules = g1->GetIndexMax();
345 /*
346 fRecCylR = new Float_t *[NumOfModules];
347 fRecCylPhi = new Float_t *[NumOfModules];
348 fRecCylZ = new Float_t *[NumOfModules];
349 */
350 fRecCylR = new Double_t *[NumOfModules];
351 fRecCylPhi = new Double_t *[NumOfModules];
352 fRecCylZ = new Double_t *[NumOfModules];
353 fNRecPoints = new Int_t[NumOfModules];
354 for(Int_t module=0; module<NumOfModules; module++) {
355 Int_t nRecPoints=fNRecPoints[module]=cobj.fNRecPoints[module];
356 /*
357 fRecCylR[module] = new Float_t[nRecPoints];
358 fRecCylPhi[module] = new Float_t[nRecPoints];
359 fRecCylZ[module] = new Float_t[nRecPoints];
360 */
361 fRecCylR[module] = new Double_t[nRecPoints];
362 fRecCylPhi[module] = new Double_t[nRecPoints];
363 fRecCylZ[module] = new Double_t[nRecPoints];
364 Int_t ind;
365 for(ind=0; ind<nRecPoints; ind++) {
366 fRecCylR[module][ind]=cobj.fRecCylR[module][ind];
367 fRecCylPhi[module][ind]=cobj.fRecCylPhi[module][ind];
368 fRecCylZ[module][ind]=cobj.fRecCylZ[module][ind];
369 }
370 }
371
372}
373void AliITSTrackerV1::DelMatrix(Int_t NumOfModules) {
374 for(Int_t mod=0; mod<NumOfModules; mod++) {
375 delete fRecCylR[mod];
376 delete fRecCylPhi[mod];
377 delete fRecCylZ[mod];
378 }
379 delete fRecCylR;
380 delete fRecCylPhi;
381 delete fRecCylZ;
cbcfa38d 382}
b48af428 383//______________________________________________________________________
cbcfa38d 384AliITSTrackerV1::~AliITSTrackerV1(){
b48af428 385 // Origin A. Badala' and G.S. Pappalardo:
386 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
64ab0d55 387 // class destructor
388 delete frl;
389 delete fNRecPoints;
390 for(Int_t i=0; i<6; i++) {
391 delete fzmin[i];
392 delete fzmax[i];
393 delete fphimin[i];
394 delete fphimax[i];
395 delete fphidet[i];
396 }
397
398 delete fzmin;
399 delete fzmax;
400 delete fphimin;
401 delete fphimax;
402 delete fphidet;
403
13888096 404}
b48af428 405//______________________________________________________________________
04b80329 406AliITSTrackerV1 &AliITSTrackerV1::operator=(AliITSTrackerV1 obj) {
b48af428 407 // Origin A. Badala' and G.S. Pappalardo:
408 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
409 // assignement operator
410
64ab0d55 411 *fITS = *obj.fITS;
b48af428 412 *fresult = *obj.fresult;
413 fPtref = obj.fPtref;
414 fChi2max = obj.fChi2max;
415 **fvettid = **obj.fvettid;
416 fflagvert = obj.fflagvert;
417 Int_t imax=200,jmax=450;
418 frl = new AliITSRad(imax,jmax);
419 *frl = *obj.frl;
420 fFieldFactor = obj.fFieldFactor;
421 Int_t i;
422 for(i=0; i<6; i++) {
423 fNlad[i] = obj.fNlad[i];
424 fNdet[i] = obj.fNdet[i];
425 fAvrad[i] = obj.fAvrad[i];
426 fDetx[i] = obj.fDetx[i];
427 fDetz[i] = obj.fDetz[i];
428 } // end for i
429 fzmin = new Double_t*[6];
430 fzmax = new Double_t*[6];
431 Int_t im1, im2, im2max;
432 for(im1=0; im1<6; im1++) {
433 im2max=fNdet[im1];
434 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
435 } // end for im1
cbcfa38d 436 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 437 for(im1=0;im1<6;im1++) {
438 im2max=fNlad[im1];
439 fphimin[im1] = new Double_t[im2max];
440 fphimax[im1] = new Double_t[im2max];
441 } // end for im1
442
443 fphidet = new Double_t*[6];
444 for(im1=0; im1<6; im1++) {
445 im2max=fNlad[im1];
446 fphidet[im1] = new Double_t[im2max];
447 } // end for im1
448 for(im1=0; im1<6; im1++) {
449 im2max=fNdet[im1];
450 for(im2=0; im2<im2max; im2++) {
451 fzmin[im1][im2]=obj.fzmin[im1][im2];
452 fzmax[im1][im2]=obj.fzmax[im1][im2];
453 } // end for im2
454 } // end for im1
455 for(im1=0; im1<6; im1++) {
456 im2max=fNlad[im1];
457 for(im2=0; im2<im2max; im2++) {
458 fphimin[im1][im2]=obj.fphimin[im1][im2];
459 fphimax[im1][im2]=obj.fphimax[im1][im2];
460 fphidet[im1][im2]=obj.fphidet[im1][im2];
461 } // end for im2
462 } // end for im1
463
64ab0d55 464 AliITSgeom *g1 = fITS->GetITSgeom();
465 Int_t NumOfModules = g1->GetIndexMax();
64ab0d55 466 fRecCylR = new Double_t *[NumOfModules];
467 fRecCylPhi = new Double_t *[NumOfModules];
468 fRecCylZ = new Double_t *[NumOfModules];
469 fNRecPoints = new Int_t[NumOfModules];
470 for(Int_t module=0; module<NumOfModules; module++) {
471 Int_t nRecPoints=fNRecPoints[module]=obj.fNRecPoints[module];
64ab0d55 472 fRecCylR[module] = new Double_t[nRecPoints];
473 fRecCylPhi[module] = new Double_t[nRecPoints];
474 fRecCylZ[module] = new Double_t[nRecPoints];
475 Int_t ind;
476 for(ind=0; ind<nRecPoints; ind++) {
477 fRecCylR[module][ind]=obj.fRecCylR[module][ind];
478 fRecCylPhi[module][ind]=obj.fRecCylPhi[module][ind];
479 fRecCylZ[module][ind]=obj.fRecCylZ[module][ind];
480 }
481 }
482
483
b48af428 484 return *this;
04b80329 485}
b48af428 486//______________________________________________________________________
487void AliITSTrackerV1::DoTracking(Int_t evNumber,Int_t minTr,Int_t maxTr,
61231d74 488 TFile *file, Bool_t realmass) {
b48af428 489 // Origin A. Badala' and G.S. Pappalardo:
490 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
491 // The method needs the event number, the minimum and maximum order
492 // number of TPC tracks that
493 // are to be tracked trough the ITS, and the file where the recpoints
494 // are registered.
495 // The method can be called by a macro. It preforms the tracking for
496 // all good TPC tracks
497
498 printf("begin DoTracking - file %p\n",file);
499
500 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 501
88b5be23 502 AliKalmanTrack::SetConvConst(1000/0.299792458/gAlice->Field()->SolenoidField());
af50998a 503 // cout<<" field = "<<gAlice->Field()->SolenoidField()<<endl;
504
b48af428 505
506 TFile *cf=TFile::Open("AliTPCclusters.root");
9040b789 507 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60_150x60");
b48af428 508 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
509
510 cf->cd();
88cb7938 511 TString foldname(fITS->GetLoader()->GetEventFolder()->GetName());
512
513 AliTPCtracker *tracker = new AliTPCtracker(digp,evNumber,foldname);
514 //PH AliTPCtracker *tracker = new AliTPCtracker(digp); //I.B.
515 //PH tracker->SetEventNumber(evNumber); //I.B.
b48af428 516
517 // Load clusters
61ab8ea8 518 //tracker->LoadInnerSectors(); //I.B.
519 //tracker->LoadOuterSectors(); //I.B.
520 tracker->LoadClusters(); //I.B.
b48af428 521
522 // Load tracks
64ab0d55 523 TFile *tf=TFile::Open("AliTPCtracksSorted.root");
b48af428 524 if (!tf->IsOpen()) {
525 cerr<<"Can't open AliTPCtracksSorted.root !\n";
526 return ;
527 } // end if
528 TObjArray tracks(200000);
529 char tname[100];
530 sprintf(tname,"TreeT_TPC_%d",evNumber);
531
532 TTree *tracktree=(TTree*)tf->Get(tname);
533 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
534 TBranch *tbranch=tracktree->GetBranch("tracks");
535 Int_t nentr=(Int_t)tracktree->GetEntries();
536 Int_t kk;
537
def162f4 538 AliITSRecPoint *recp; // oggi
539 AliTPCtrack *ioTrackTPC=0;
b48af428 540 for (kk=0; kk<nentr; kk++) {
541 ioTrackTPC=new AliTPCtrack;
542 tbranch->SetAddress(&ioTrackTPC);
543 tracktree->GetEvent(kk);
544 tracker->CookLabel(ioTrackTPC,0.1);
545 tracks.AddLast(ioTrackTPC);
546 } // end for kk
547 delete tracker;
548 tf->Close();
549
550 Int_t nt = tracks.GetEntriesFast();
551 cerr<<"Number of found tracks "<<nt<<endl;
552
553 TVector vec(5);
554 TTree *tr=gAlice->TreeR();
555 Int_t nent=(Int_t)tr->GetEntries();
556 frecPoints = fITS->RecPoints();
557
558 Int_t numbpoints;
559 Int_t totalpoints=0;
560 Int_t *np = new Int_t[nent];
561 fvettid = new Int_t* [nent];
562 Int_t mod;
563
564 for (mod=0; mod<nent; mod++) {
565 fvettid[mod]=0;
566 fITS->ResetRecPoints();
567 gAlice->TreeR()->GetEvent(mod);
568 numbpoints = frecPoints->GetEntries();
569 totalpoints+=numbpoints;
570 np[mod] = numbpoints;
571 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n";getchar();
572 fvettid[mod] = new Int_t[numbpoints];
573 Int_t ii;
574 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
575 } // end for mod
576
577 AliTPCtrack *track=0;
578
579 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
580
581 TVector vgeant(3);
582
583 TTree tracktree1("TreeT","Tree with ITS tracks");
584 AliITSIOTrack *ioTrack=0;
def162f4 585 AliITSPid *pid=new AliITSPid(1000); // oggi
586
b48af428 587 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
588
def162f4 589 TDatabasePDG * db = new TDatabasePDG;
61231d74 590
b48af428 591 Int_t j;
592 for (j=minTr; j<=maxTr; j++) {
593 track=(AliTPCtrack*)tracks.UncheckedAt(j);
594 if (!track) continue;
61231d74 595
596 /// mass definition ////////////////////////
597 Double_t mass=0.13956995;
598 Int_t pcode=211; // a pion by default
def162f4 599
61231d74 600 if(realmass) {
def162f4 601 if(TMath::Abs(pcode)<20443) mass=db->GetParticle(pcode)->Mass();
61231d74 602 }
def162f4 603 else {
604 mass = track->GetMass();
e286bade 605// cout << "Mass = " << mass << endl;
def162f4 606 }
607
61231d74 608
609
d3ab000e 610 // new propagation to the end of TPC
64ab0d55 611 Double_t xk=80.;
612 // track->PropagateTo(xk,0.,0.); //Ne if it's still there //attenzione funziona solo se modifica in TPC
613 // Double_t xk=77.415;
d3ab000e 614 track->PropagateTo(xk, 28.94, 1.204e-3);
615 xk-=0.005;
616 track->PropagateTo(xk, 44.77,1.71); //Tedlar
617 xk-=0.02;
618 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
619 xk-=2.0;
620 track->PropagateTo(xk, 41.28, 0.029);//Nomex
621 xk-=0.02;
622 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
623 xk-=0.005;
624 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
625
626 xk=61.;
64ab0d55 627 // track->PropagateTo(xk,0.,0.); //C02
628 track->PropagateTo(xk,36.2,1.98e-3); //C02 //attenzione funziona solo se modifica in TPC
d3ab000e 629
630 xk -=0.005;
631 track->PropagateTo(xk, 24.01, 2.7); //Al
632 xk -=0.005;
633 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
634 xk -=0.02;
635 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
636 xk -=0.5;
637 track->PropagateTo(xk, 41.28, 0.029); //Nomex
638 xk -=0.02;
639 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
640 xk -=0.005;
641 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
642 xk -=0.005;
64ab0d55 643 track->PropagateTo(xk, 24.01, 2.7); //Al
af50998a 644
64ab0d55 645 ////////////////////////////////////////////////////////////////////////////////////////////////////////
af50998a 646 //AliITSTrackV1 trackITS(*track);
647 AliITSTrackV1 trackITS(*track, fFieldFactor);
648 //cout<<" fFieldFactor = "<<fFieldFactor<<"\n";
61231d74 649 trackITS.PutMass(mass); //new to add mass to track
b48af428 650 if(fresult){ delete fresult; fresult=0;}
651 fresult = new AliITSTrackV1(trackITS);
652
653 AliITSTrackV1 primaryTrack(trackITS);
654 vgeant=(*fresult).GetVertex();
655
656 // Definition of dv and zv for vertex constraint
657 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
658 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
13888096 659 Double_t uniform= gRandom->Uniform();
660 Double_t signdv;
661 if(uniform<=0.5) signdv=-1.;
b48af428 662 else
663 signdv=1.;
664
04b80329 665 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
b48af428 666 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
667 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
668 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
669 trackITS.SetDv(dv);
670 trackITS.SetZv(zv);
671 trackITS.SetsigmaDv(sigmaDv);
672 trackITS.SetsigmaZv(sigmaZv);
673 (*fresult).SetDv(dv);
674 (*fresult).SetZv(zv);
675 (*fresult).SetsigmaDv(sigmaDv);
676 (*fresult).SetsigmaZv(sigmaZv);
677 primaryTrack.SetDv(dv);
678 primaryTrack.SetZv(zv);
679 primaryTrack.SetsigmaDv(sigmaDv);
680 primaryTrack.SetsigmaZv(sigmaZv);
681 primaryTrack.PrimaryTrack(frl);
682 TVector d2=primaryTrack.Getd2();
683 TVector tgl2=primaryTrack.Gettgl2();
684 TVector dtgl=primaryTrack.Getdtgl();
685 trackITS.Setd2(d2); trackITS.Settgl2(tgl2);
686 trackITS.Setdtgl(dtgl);
687 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2);
688 (*fresult).Setdtgl(dtgl);
689 /*
690 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
691 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
692 */
693 TList *list= new TList();
694
695 list->AddLast(&trackITS);
696
697 fPtref=TMath::Abs( (trackITS).GetPt() );
af50998a 698 //cout<<" fPtref = " <<fPtref<<"\n";
b48af428 699 if(fPtref>1.0) fChi2max=40.;
700 if(fPtref<=1.0) fChi2max=20.;
701 if(fPtref<0.4 ) fChi2max=100.;
702 if(fPtref<0.2 ) fChi2max=40.;
703 // if(fPtref<0.4 ) fChi2max=30.;
704 // if(fPtref<0.2 ) fChi2max=20.;
705 //if(fPtref<0.2 ) fChi2max=10.;
706 //if(fPtref<0.1 ) fChi2max=5.;
c57de405 707 //cout << "\n Pt = " << fPtref <<"\n"; //stampa
b48af428 708 RecursiveTracking(list);
709 list->Delete();
710 delete list;
711
712 Int_t itot=-1;
713 TVector vecTotLabRef(18);
714 Int_t lay, k;
715 for(lay=5; lay>=0; lay--) {
716 TVector vecLabRef(3);
717 vecLabRef=(*fresult).GetLabTrack(lay);
718 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
719 for(k=0; k<3; k++){
04b80329 720 Int_t lpp=(Int_t)vecLabRef(k);
721 if(lpp>=0) {
b48af428 722 TParticle *p=(TParticle*) gAlice->Particle(lpp);
723 Int_t pcode=p->GetPdgCode();
724 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
725 } // end if
726 itot++; vecTotLabRef(itot)=vecLabRef(k);
64ab0d55 727 if(vecLabRef(k)==0. && clustZ == -1.) vecTotLabRef(itot) =-3.;
b48af428 728 } // end for k
729 } // end for lay
730 Long_t labref;
731 Int_t freq;
732 (*fresult).Search(vecTotLabRef, labref, freq);
733
734 //if(freq < 6) labref=-labref; // cinque - sei
735 if(freq < 5) labref=-labref; // cinque - sei
736 (*fresult).SetLabel(labref);
737
738 // cout<<" progressive track number = "<<j<<"\r";
739 // cout<<j<<"\r";
740 Int_t numOfCluster=(*fresult).GetNumClust();
c57de405 741 //cout<<" progressive track number = "<<j<<"\n"; // stampa
b48af428 742 Long_t labITS=(*fresult).GetLabel();
c57de405 743 //cout << " ITS track label = " << labITS << "\n"; // stampa
b48af428 744 Int_t lab=track->GetLabel();
c57de405 745 //cout << " TPC track label = " << lab <<"\n"; // stampa
b48af428 746 //propagation to vertex
747
748 Double_t rbeam=3.;
def162f4 749 if((*fresult).DoNotCross(rbeam)) continue; //no intersection with beampipe
b48af428 750 (*fresult).Propagation(rbeam);
751 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
752 (*fresult).GetCElements(c00,
753 c10,c11,
754 c20,c21,c22,
755 c30,c31,c32,c33,
756 c40,c41,c42,c43,c44);
13888096 757
b48af428 758 Double_t pt=TMath::Abs((*fresult).GetPt());
759 Double_t dr=(*fresult).GetD();
760 Double_t z=(*fresult).GetZ();
761 Double_t tgl=(*fresult).GetTgl();
762 Double_t c=(*fresult).GetC();
763 Double_t cy=c/2.;
764 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
765 dz-=vgeant(2);
766 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
767 Double_t phi=(*fresult).Getphi();
768 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
769 Double_t duepi=2.*TMath::Pi();
770 if(phivertex>duepi) phivertex-=duepi;
771 if(phivertex<0.) phivertex+=duepi;
772 /////////////////////////////////////////////////////////////
773 Int_t idmodule,idpoint;
774 if(numOfCluster >=5) { // cinque - sei
775 //if(numOfCluster ==6) { // cinque - sei
776 AliITSIOTrack outTrack;
777 ioTrack=&outTrack;
778 ioTrack->SetStatePhi(phi);
779 ioTrack->SetStateZ(z);
780 ioTrack->SetStateD(dr);
781 ioTrack->SetStateTgl(tgl);
782 ioTrack->SetStateC(c);
783 Double_t radius=(*fresult).Getrtrack();
784 ioTrack->SetRadius(radius);
785 Int_t charge;
786 if(c>0.) charge=-1; else charge=1;
787 ioTrack->SetCharge(charge);
def162f4 788 Double_t trackmass=(*fresult).GetMass(); // oggi
789 ioTrack->SetMass(trackmass); // oggi
b48af428 790 ioTrack->SetCovMatrix(c00,
791 c10,c11,
792 c20,c21,c22,
793 c30,c31,c32,c33,
794 c40,c41,c42,c43,c44);
795 Double_t px=pt*TMath::Cos(phivertex);
796 Double_t py=pt*TMath::Sin(phivertex);
797 Double_t pz=pt*tgl;
798 Double_t xtrack=dr*TMath::Sin(phivertex);
799 Double_t ytrack=dr*TMath::Cos(phivertex);
800 Double_t ztrack=dz+vgeant(2);
801 ioTrack->SetPx(px);
802 ioTrack->SetPy(py);
803 ioTrack->SetPz(pz);
804 ioTrack->SetX(xtrack);
805 ioTrack->SetY(ytrack);
806 ioTrack->SetZ(ztrack);
807 ioTrack->SetLabel(labITS);
808 ioTrack->SetTPCLabel(lab);
61231d74 809 ioTrack->SetDz(dz);
b48af428 810 Int_t il;
def162f4 811 /*
812 for(il=0;il<6; il++){
b48af428 813 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
814 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
815 } // end for il
def162f4 816 */
817 //tracktree1.Fill();
818 Float_t q[4]={-1.,-1.,-1.,-1.};
819 Float_t globaldedx=0.;
b48af428 820 for (il=0;il<6;il++) {
821 idpoint=(*fresult).GetIdPoint(il);
822 idmodule=(*fresult).GetIdModule(il);
61231d74 823 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1;
824
b48af428 825 ioTrack->SetIdPoint(il,idpoint);
826 ioTrack->SetIdModule(il,idmodule);
def162f4 827 //// for q definition
828 if(il>1){
829 if(idmodule>0.){
830 fITS->ResetRecPoints();
831 gAlice->TreeR()->GetEvent(idmodule);
832 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(idpoint);
833 q[il-2]=recp->GetQ()*(*fresult).Getfcor(il-2);
834 }
835 }
836 } // end for il
837 q[0]/=280.; q[1]/=280.;
838 q[2]/=38.; q[3]/=38.;
839
840 // cout<<" q prima = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
841
842 Int_t swap;
843 do{
844 swap=0;
845 for (il=0; il<3; il++) {
846 if (q[il]<=q[il+1]) continue;
847 Float_t tmp=q[il];
848 q[il]=q[il+1]; q[il+1]=tmp;
849 swap++;
850 }
851 } while(swap);
852
853
854 // cout<<" q dopo = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
855
856 if(q[0]<0.) {
857 q[0]=q[1];
858 q[1]=q[2];
859 q[2]=q[3];
860 q[3]=-1.;
861 }
862
863 // cout<<" q dopo if = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
864
865 globaldedx=(q[0]+q[1])/2.;
866
867 // if(q[3]> 0.) globaldedx=(q[0]+q[1]+q[2]+q[3])/4.;
868 // else globaldedx=(q[0]+q[1]+q[2])/3.;
869
870 ioTrack->SetdEdx(globaldedx);
871 ioTrack->SetPid(pid->GetPcode(ioTrack));
872
873 tracktree1.Fill();
b48af428 874 } // end if on numOfCluster
875 //gObjectTable->Print(); // stampa memoria
876 } // end for (int j=minTr; j<=maxTr; j++)
61231d74 877 delete db;
b48af428 878 static Bool_t first=kTRUE;
879 static TFile *tfile;
880 if(first) {
881 tfile=new TFile("itstracks.root","RECREATE");
882 //cout<<"I have opened itstracks.root file "<<endl;
883 } // end if
884 first=kFALSE;
885 tfile->cd();
886 tfile->ls();
887 char hname[30];
888 sprintf(hname,"TreeT%d",evNumber);
def162f4 889 cout << "Number of saved ITS tracks " << tracktree1.GetEntries() << endl;
b48af428 890 tracktree1.Write(hname);
891
892 TTree *fAli=gAlice->TreeK();
893 TFile *fileAli=0;
894 if (fAli) fileAli =fAli->GetCurrentFile();
895 fileAli->cd();
896 ////////////////////////////////////////////////////////////////////
897
898 printf("delete vectors\n");
899 if(np) delete [] np;
900 if(fvettid) delete [] fvettid;
901 if(fresult) {delete fresult; fresult=0;}
04b80329 902}
b48af428 903//______________________________________________________________________
04b80329 904void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
b48af428 905 // This function perform the recursive tracking in ITS detectors
906 // reference is a pointer to the final best track
907 // Origin A. Badala' and G.S. Pappalardo:
908 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
909 // The authors thank Mariana Bondila to have help them to resolve some
910 // problems. July-2000
911
912 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9;
913 // Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
914
915 //////////////////////
916 Float_t sigmaphil[6], sigmazl[6];
917 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
918 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
919 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
920 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
921 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
922 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
923 sigmazl[0]=1e-2;
924 sigmazl[1]=1e-2;
925 sigmazl[2]=7.84e-4;
926 sigmazl[3]=7.84e-4;
927 sigmazl[4]=0.6889;
928 sigmazl[5]=0.6889;
929 ///////////////////////////////////////////////////////////
930 Int_t index;
931 AliITSgeom *g1 = fITS->GetITSgeom();
932 AliITSRecPoint *recp;
933 for(index =0; index<trackITSlist->GetSize(); index++) {
934 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
935 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
936 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
937 // cout<<"fvtrack =" <<"\n";
938 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "
939 // <<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "
940 // <<(*trackITS)(4)<<"\n";
941 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
942 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
943 // getchar();
944 Double_t chi2Now, chi2Ref;
945 Float_t numClustRef = fresult->GetNumClust();
946 if((*trackITS).GetLayer()==1 ) {
947 chi2Now = trackITS->GetChi2();
948 Float_t numClustNow = trackITS->GetNumClust();
949 if(trackITS->GetNumClust())
950 chi2Now /= (Double_t)trackITS->GetNumClust();
951 chi2Ref = fresult->GetChi2();
952 if(fresult->GetNumClust())
953 chi2Ref /= (Double_t)fresult->GetNumClust();
954 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
955 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
956 if((numClustNow == numClustRef )&&
957 (chi2Now < chi2Ref)) {
958 *fresult = *trackITS;
959 } // end if
960 continue;
961 } // end if
962
963 if(trackITS->Getfnoclust()>=2) continue;
964 Float_t numClustNow = trackITS->GetNumClust();
965 if(numClustNow) {
966 chi2Now = trackITS->GetChi2();
967
968 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
969 //cout<<" chi2Now = "<<chi2Now<<"\n";
64ab0d55 970
b48af428 971 chi2Now/=numClustNow;
972 if(fPtref > 1.0 && chi2Now > 30.) continue;
973 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
974 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
975 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
976 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
977 if(fPtref <= 0.2 && chi2Now > 7.) continue;
978 /////////////////////////////
979 } // end if
980
981 Int_t layerInit = (*trackITS).GetLayer();
982 Int_t layernew = layerInit - 2;// -1 for new layer, -1 for matrix index
983 TList listoftrack;
984 Int_t ladp, ladm, detp,detm,ladinters,detinters;
985 Int_t layerfin=layerInit-1;
986 // cout<<"Prima di intersection \n";
b48af428 987 Int_t outinters=Intersection(*trackITS,layerfin,ladinters,detinters);
b48af428 988 // cout<<" outinters = "<<outinters<<"\n";
989 // cout<<" Layer ladder detector intersection ="
990 // <<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
991 // cout << " phiinters zinters = "<<(*trackITS)(0)
992 // << " "<<(*trackITS)(1)<<"\n"; getchar();
993 if(outinters==-1) continue;
994 Int_t flaghit=0;
def162f4 995 (*trackITS).SetLayer(layerfin); // oggi
996 (*trackITS).Setfcor(); // oggi
b48af428 997 if(outinters==0){
998 TVector toucLad(9), toucDet(9);
999 Int_t lycur=layerfin;
1000 ladp=ladinters+1;
1001 ladm=ladinters-1;
1002 if(ladm <= 0) ladm=fNlad[layerfin-1];
1003 if(ladp > fNlad[layerfin-1]) ladp=1;
1004 detp=detinters+1;
1005 detm=detinters-1;
1006 Int_t idetot=1;
1007 /*
1008 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
1009 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
1010 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
1011 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
1012 if(detm > 0 && detp <= fNdet[layerfin-1]) {
1013 idetot=9;
1014 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1015 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
1016 } // end if
1017 if(detm > 0 && detp > fNdet[layerfin-1]) {
1018 idetot=6;
1019 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1020 } // end if
1021 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
1022 idetot=6;
1023 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
1024 } // end if
1025 */
f66ae545 1026 Float_t epsphi=5.0, epsz=5.0;
b48af428 1027 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
64ab0d55 1028 // new definition of idetot e toucLad e toucDet to be
b48af428 1029 // transformed in a method
1030 // these values could be modified
1031 Float_t pigre=TMath::Pi();
1032 Float_t rangephi=5., rangez=5.;
1033 if(layerfin==1 || layerfin ==2){
1034 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1035 (*trackITS).GetSigmaphi());
1036 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1037 (*trackITS).GetSigmaZ());
1038 } // end if
1039 if(layerfin==3 || layerfin ==4){
1040 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1041 // (*trackITS).GetSigmaphi());
1042 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+
1043 // (*trackITS).GetSigmaZ());
1044 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1045 (*trackITS).GetSigmaphi());
1046 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1047 (*trackITS).GetSigmaZ());
1048 } // end if
1049 if(layerfin==5 || layerfin ==6){
1050 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1051 (*trackITS).GetSigmaphi());
1052 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1053 (*trackITS).GetSigmaZ());
1054 } // end if
1055 Float_t phinters, zinters;
1056 phinters=(*trackITS).Getphi();
1057 zinters=(*trackITS).GetZ();
1058 Float_t distz = 0.0;
1059 Float_t phicm, phicp, distphim, distphip;
1060 phicm=phinters;
cf411bb5 1061 if(phinters>fphimax[layerfin-1][ladm-1]) phicm=phinters-2*pigre; //corretto il 20-11-2001
1062 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm-1]); //corretto il 20-11-2001
b48af428 1063 phicp=phinters;
cf411bb5 1064 //cout<<" fNlad[layerfin-1] e ladp = "<<fNlad[layerfin-1]<<" "<<ladp<<endl;
1065 if(phinters>fphimin[layerfin-1][ladp-1]) phicp=phinters-2.*pigre; //corretto il 20-11-2001
1066 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp-1]); //corretto il 20-11-2001
b48af428 1067 Int_t flagzmin=0;
1068 Int_t flagzmax=0;
1069 idetot=1;
1070 toucLad(0)=ladinters; toucDet(0)=detinters;
1071 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
1072 if(detm>0 && rangez>=distz){
1073 flagzmin=1;
1074 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
1075 if(rangephi>=distphim){
1076 idetot++;
1077 toucLad(idetot-1)=ladm;
1078 toucDet(idetot-1)=detinters;
1079 idetot++;
1080 toucLad(idetot-1)=ladm;
1081 toucDet(idetot-1)=detm;
1082 } // end if
1083 if(rangephi>=distphip){
1084 idetot++;
1085 toucLad(idetot-1)=ladp;
1086 toucDet(idetot-1)=detinters;
1087 idetot++;
1088 toucLad(idetot-1)=ladp;
1089 toucDet(idetot-1)=detm;
1090 } // end if
1091 } //end detm>0....
1092 if(detp<=fNdet[layerfin-1])
1093 distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
1094 if(detp<=fNdet[layerfin-1] && rangez>=distz){
1095 flagzmax=1;
1096 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
1097 if(rangephi>=distphim){
1098 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
1099 if(flagzmin == 0) {
1100 idetot++;
1101 toucLad(idetot-1)=ladm;
1102 toucDet(idetot-1)=detinters;
1103 } // end if
1104 } // end if
1105 if(rangephi>=distphip){
1106 idetot++;
1107 toucLad(idetot-1)=ladp;
1108 toucDet(idetot-1)=detp;
1109 if(flagzmin == 0) {
1110 idetot++;
1111 toucLad(idetot-1)=ladp;
1112 toucDet(idetot-1)=detinters;
1113 } // end if
1114 } // end if
1115 } //end detm<fNdet[.......
1116
1117 if(flagzmin == 0 && flagzmax==0){
1118 if(rangephi>=distphim){
1119 idetot++;
1120 toucLad(idetot-1)=ladm;
1121 toucDet(idetot-1)=detinters;
1122 } // end if
1123 if(rangephi>=distphip){
1124 idetot++;
1125 toucLad(idetot-1)=ladp;
1126 toucDet(idetot-1)=detinters;
1127 } // end if
1128 } // end if
1129 ////////////////////////////////////////////////////////////
1130 Int_t iriv;
1131 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
1132 ///////////////////////////////////////////////////////
1133 /*** Rec points sorted by module *****/
1134 /**************************************/
64ab0d55 1135 Int_t indexmod;
b48af428 1136 indexmod = g1->GetModuleIndex(lycur,(Int_t)toucLad(iriv),
64ab0d55 1137 (Int_t)toucDet(iriv));
b48af428 1138 fITS->ResetRecPoints();
1139 gAlice->TreeR()->GetEvent(indexmod);
1140 Int_t npoints=frecPoints->GetEntries();
64ab0d55 1141
b48af428 1142 Int_t indnew;
1143 for(indnew=0; indnew<npoints; indnew++){
1144 if (*(fvettid[indexmod]+indnew)==0)
1145 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
1146 else
f66ae545 1147 continue;
b48af428 1148 TVector cluster(3),vecclust(9);
64ab0d55 1149 //vecclust(6)=vecclust(7)=vecclust(8)=-1.;
1150 Double_t sigma[2];
1151 // now vecclust is with cylindrical cohordinates
1152 vecclust(0)=(Float_t)fRecCylR[indexmod][indnew];
1153 vecclust(1)=(Float_t)fRecCylPhi[indexmod][indnew];
1154 vecclust(2)=(Float_t)fRecCylZ[indexmod][indnew];
b48af428 1155 vecclust(3) = (Float_t)recp->fTracks[0];
b48af428 1156 vecclust(4) = (Float_t)indnew;
64ab0d55 1157 vecclust(5) = (Float_t)indexmod;
b48af428 1158 vecclust(6) = (Float_t)recp->fTracks[0];
1159 vecclust(7) = (Float_t)recp->fTracks[1];
1160 vecclust(8) = (Float_t)recp->fTracks[2];
1161 sigma[0] = (Double_t) recp->GetSigmaX2();
1162 sigma[1] = (Double_t) recp->GetSigmaZ2();
64ab0d55 1163
1164 cluster(0)=fRecCylR[indexmod][indnew];
1165 cluster(1)=fRecCylPhi[indexmod][indnew];
1166 cluster(2)=fRecCylZ[indexmod][indnew];
1167
b48af428 1168 // cout<<" layer = "<<play<<"\n";
1169 // cout<<" cluster prima = "<<vecclust(0)<<" "
1170 // <<vecclust(1)<<" "
1171 // <<vecclust(2)<<"\n"; getchar();
1172
1173 Float_t sigmatotphi, sigmatotz;
1174 // Float_t epsphi=5.0, epsz=5.0;
1175 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
1176 Double_t rTrack=(*trackITS).Getrtrack();
1177 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
1178 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi +
1179 (*trackITS).GetSigmaphi());
1180 sigmatotz=epsz*TMath::Sqrt(sigma[1] +
1181 (*trackITS).GetSigmaZ());
1182 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)
1183 // <<" "<<cluster(1)<<" "<<sigmatotphi<<" "
1184 // <<vecclust(3)<<"\n";
1185 //if(vecclust(3)==481) getchar();
1186 if(cluster(1)<6. && (*trackITS).Getphi()>6.)
1187 cluster(1)=cluster(1)+(2.*TMath::Pi());
1188 if(cluster(1)>6. && (*trackITS).Getphi()<6.)
1189 cluster(1)=cluster(1)-(2.*TMath::Pi());
1190 if(TMath::Abs(cluster(1)-(*trackITS).Getphi())>sigmatotphi)
1191 continue;
1192 // cout<<" supero sigmaphi \n";
1193 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
def162f4 1194 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
b48af428 1195 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
1196 (*newTrack).Correct(Double_t(cluster(0)));
1197 //cout<<" cluster(2) e(*newTrack).GetZ()="<<cluster(2)<<" "
1198 // << (*newTrack).GetZ()<<"\n";
1199 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
1200 delete newTrack;
1201 continue;
1202 } // end if
1203 Double_t sigmanew[2];
1204 sigmanew[0]= sigmaphi;
1205 sigmanew[1]=sigma[1];
1206 Double_t m[2];
1207 m[0]=cluster(1);
1208 m[1]=cluster(2);
1209 // Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
1210 // cout<<" chi2pred = "<<chi2pred<<"\n";
1211 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
1212 if(iriv == 0) flaghit=1;
1213 (*newTrack).AddMS(frl); // add the multiple scattering
1214 //matrix to the covariance matrix
1215 (*newTrack).AddEL(frl,1.,0);
1216
b48af428 1217 if(fflagvert){
1218 KalmanFilterVert(newTrack,cluster,sigmanew);
1219 //KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
1220 }else{
1221 KalmanFilter(newTrack,cluster,sigmanew);
1222 } // end if
b48af428 1223 (*newTrack).PutCluster(layernew, vecclust);
1224 newTrack->AddClustInTrack();
1225 listoftrack.AddLast(newTrack);
1226 } // end for indnew
b48af428 1227 } // end of for on detectors (iriv)
1228 }//end if(outinters==0)
1229
1230 if(flaghit==0 || outinters==-2) {
1231 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
1232 (*newTrack).Setfnoclust();
def162f4 1233 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
b48af428 1234 (*newTrack).AddMS(frl); // add the multiple scattering matrix
1235 // to the covariance matrix
1236 (*newTrack).AddEL(frl,1.,0);
1237 listoftrack.AddLast(newTrack);
1238 } // end if
1239
1240 //gObjectTable->Print(); // stampa memoria
04b80329 1241
b48af428 1242 RecursiveTracking(&listoftrack);
1243 listoftrack.Delete();
1244 } // end of for on tracks (index)
04b80329 1245
b48af428 1246 //gObjectTable->Print(); // stampa memoria
13888096 1247}
b48af428 1248//______________________________________________________________________
1249Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track,Int_t layer,
1250 Int_t &ladder,Int_t &detector) {
1251 // Origin A. Badala' and G.S. Pappalardo
1252 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1253 // Found the intersection and the detector
1254
1255 Double_t rk=fAvrad[layer-1];
1256 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1257 track.Propagation(rk);
1258 Double_t zinters=track.GetZ();
1259 Double_t phinters=track.Getphi();
1260 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
1261
1262 TVector det(9);
1263 TVector listDet(2);
1264 TVector distZCenter(2);
1265
1266 Int_t iz=0;
1267 Int_t iD;
1268 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
1269 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1270 if(iz>1) {
1271 cout<< " Errore su iz in Intersection \n";
1272 getchar();
1273 }else {
1274 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2));
1275 iz++;
1276 } // end if
1277 } // end if
1278 } // end for iD
1279
1280 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1281 detector=Int_t (listDet(0));
1282 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
1283
1284 TVector listLad(2);
1285 TVector distPhiCenter(2);
1286 Int_t ip=0;
1287 Double_t pigre=TMath::Pi();
1288 Int_t iLd;
1289 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1290 Double_t phimin=fphimin[layer-1][iLd-1];
1291 Double_t phimax=fphimax[layer-1][iLd-1];
1292 Double_t phidet=fphidet[layer-1][iLd-1];
1293 Double_t phiconfr=phinters;
1294 if(phimin>phimax) {
1295 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n";
1296 // getchar();}
1297 phimin-=(2.*pigre);
1298 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1299 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
1300 } // end if
1301 if(phiconfr>phimin && phiconfr<= phimax) {
1302 if(ip>1) {
1303 cout<< " Errore su ip in Intersection \n"; getchar();
1304 }else {
1305 listLad(ip)= iLd;
1306 distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1307 } // end if
1308 } // end if
1309 } // end for iLd
1310 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1311 ladder=Int_t (listLad(0));
1312 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
1313 return 0;
1314}
1315//______________________________________________________________________
1316void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,
1317 Double_t sigma[2]){
1318 //Origin A. Badala' and G.S. Pappalardo:
1319 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1320 // Kalman filter without vertex constraint
1321 ////// Evaluation of the measurement vector ////////////////////////
1322 Double_t m[2];
1323 Double_t rk,phik,zk;
1324 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1325 m[0]=phik; m[1]=zk;
1326 //////////////////////// Evaluation of the error matrix V /////////
1327 Double_t v00=sigma[0];
1328 Double_t v11=sigma[1];
1329 ////////////////////////////////////////////////////////////////////
1330 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,
1331 cin32,cin42,cin33,cin43,cin44;
1332
1333 newTrack->GetCElements(cin00,
1334 cin10,cin11,
1335 cin20,cin21,cin22,
1336 cin30,cin31,cin32,cin33,
1337 cin40,cin41,cin42,cin43,cin44); //get C matrix
1338 Double_t rold00=cin00+v00;
1339 Double_t rold10=cin10;
1340 Double_t rold11=cin11+v11;
1341 ////////////////////// R matrix inversion /////////////////////////
1342 Double_t det=rold00*rold11-rold10*rold10;
1343 Double_t r00=rold11/det;
1344 Double_t r10=-rold10/det;
1345 Double_t r11=rold00/det;
1346 ////////////////////////////////////////////////////////////////////
1347 Double_t k00=cin00*r00+cin10*r10;
1348 Double_t k01=cin00*r10+cin10*r11;
1349 Double_t k10=cin10*r00+cin11*r10;
1350 Double_t k11=cin10*r10+cin11*r11;
1351 Double_t k20=cin20*r00+cin21*r10;
1352 Double_t k21=cin20*r10+cin21*r11;
1353 Double_t k30=cin30*r00+cin31*r10;
1354 Double_t k31=cin30*r10+cin31*r11;
1355 Double_t k40=cin40*r00+cin41*r10;
1356 Double_t k41=cin40*r10+cin41*r11;
1357 Double_t x0,x1,x2,x3,x4;
1358 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1359 Double_t savex0=x0, savex1=x1;
1360 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1361 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1362 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1363 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1364 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1365 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1366 c00=cin00-k00*cin00-k01*cin10;
1367 c10=cin10-k00*cin10-k01*cin11;
1368 c20=cin20-k00*cin20-k01*cin21;
1369 c30=cin30-k00*cin30-k01*cin31;
1370 c40=cin40-k00*cin40-k01*cin41;
1371 c11=cin11-k10*cin10-k11*cin11;
1372 c21=cin21-k10*cin20-k11*cin21;
1373 c31=cin31-k10*cin30-k11*cin31;
1374 c41=cin41-k10*cin40-k11*cin41;
1375 c22=cin22-k20*cin20-k21*cin21;
1376 c32=cin32-k20*cin30-k21*cin31;
1377 c42=cin42-k20*cin40-k21*cin41;
1378 c33=cin33-k30*cin30-k31*cin31;
1379 c43=cin43-k30*cin40-k31*cin41;
1380 c44=cin44-k40*cin40-k41*cin41;
1381 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1382 newTrack->PutCElements(c00,
1383 c10,c11,
1384 c20,c21,c22,
1385 c30,c31,c32,c33,
1386 c40,c41,c42,c43,c44); // put in track the
1387 // new cov matrix
1388 Double_t vmcold00=v00-c00;
1389 Double_t vmcold10=-c10;
1390 Double_t vmcold11=v11-c11;
1391 ////////////////////// Matrix vmc inversion ///////////////////////
1392 det=vmcold00*vmcold11-vmcold10*vmcold10;
1393 Double_t vmc00=vmcold11/det;
1394 Double_t vmc10=-vmcold10/det;
1395 Double_t vmc11=vmcold00/det;
1396 ////////////////////////////////////////////////////////////////////
1397 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1398 (m[1]-x1)*vmc11*(m[1]-x1);
04b80329 1399 newTrack->SetChi2(newTrack->GetChi2()+chi2);
b48af428 1400}
1401//----------------------------------------------------------------------
1402//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1403// TVector &cluster,Double_t sigma[2]){
1404void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1405 TVector &cluster,Double_t sigma[2]
1406 /*, Double_t chi2pred*/){
1407 //Origin A. Badala' and G.S. Pappalardo:
1408 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1409 // Kalman filter with vertex constraint
1410 ///////////////////// Evaluation of the measurement vector m ////////
1411 Double_t m[4];
1412 Double_t rk,phik,zk;
1413 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1414 m[0]=phik; m[1]=zk;
1415 Double_t cc=(*newTrack).GetC();
1416 Double_t zv=(*newTrack).GetZv();
1417 Double_t dv=(*newTrack).GetDv();
1418 Double_t cy=cc/2.;
1419 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1420 m[2]=dv; m[3]=tgl;
1421 /////////////////////// Evaluation of the error matrix V //////////
1422 Int_t layer=newTrack->GetLayer();
1423 Double_t v00=sigma[0];
1424 Double_t v11=sigma[1];
1425 Double_t v31=sigma[1]/rk;
1426 Double_t sigmaDv=newTrack->GetsigmaDv();
1427 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1428 Double_t v32=newTrack->Getdtgl(layer-1);
1429 Double_t sigmaZv=newTrack->GetsigmaZv();
1430 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+newTrack->Gettgl2(layer-1);
1431 //////////////////////////////////////////////////////////////////
1432 Double_t cin00,cin10,cin11,cin20,cin21,cin22,
1433 cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1434 newTrack->GetCElements(cin00,
1435 cin10,cin11,
1436 cin20,cin21,cin22,
1437 cin30,cin31,cin32,cin33,
1438 cin40,cin41,cin42,cin43,cin44); //get C matrix
1439 Double_t r[4][4];
1440 r[0][0]=cin00+v00;
1441 r[1][0]=cin10;
1442 r[2][0]=cin20;
1443 r[3][0]=cin30;
1444 r[1][1]=cin11+v11;
1445 r[2][1]=cin21;
1446 r[3][1]=cin31+sigma[1]/rk;
1447 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1448 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1449 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+
1450 newTrack->Gettgl2(layer-1);
1451 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0];
1452 r[1][2]=r[2][1]; r[1][3]=r[3][1]; r[2][3]=r[3][2];
1453 ///////////////////// Matrix R inversion //////////////////////////
1454 const Int_t kn=4;
1455 Double_t big, hold;
1456 Double_t d=1.;
1457 Int_t ll[kn],mm[kn];
1458 Int_t i,j,k;
1459
1460 for(k=0; k<kn; k++) {
1461 ll[k]=k;
1462 mm[k]=k;
1463 big=r[k][k];
1464 for(j=k; j<kn ; j++) {
1465 for (i=j; i<kn; i++) {
1466 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) {
1467 big=r[i][j];
1468 ll[k]=i;
1469 mm[k]=j;
1470 } // end if
1471 } // end for i
1472 } // end for j
1473 //
1474 j= ll[k];
1475 if(j > k) {
1476 for(i=0; i<kn; i++) {
1477 hold=-r[k][i];
1478 r[k][i]=r[j][i];
1479 r[j][i]=hold;
1480 } // end for i
1481 }// end if
1482 //
1483 i=mm[k];
1484 if(i > k ) {
1485 for(j=0; j<kn; j++) {
1486 hold=-r[j][k];
1487 r[j][k]=r[j][i];
1488 r[j][i]=hold;
1489 } // end for j
1490 } // end if
1491 //
1492 if(!big) {
1493 d=0.;
1494 cout << "Singular matrix\n";
1495 } // end if
1496 for(i=0; i<kn; i++) {
1497 if(i == k) { continue; }
1498 r[i][k]=r[i][k]/(-big);
1499 } // end for i
1500 //
1501 for(i=0; i<kn; i++) {
1502 hold=r[i][k];
1503 for(j=0; j<kn; j++) {
1504 if(i == k || j == k) continue;
1505 r[i][j]=hold*r[k][j]+r[i][j];
1506 } // end for j
1507 } // end of ri
1508 //
1509 for(j=0; j<kn; j++) {
1510 if(j == k) continue;
1511 r[k][j]=r[k][j]/big;
1512 } // end for j
1513 //
1514 d=d*big;
1515 //
1516 r[k][k]=1./big;
1517 } // end for k
1518 //
1519 for(k=kn-1; k>=0; k--) {
1520 i=ll[k];
1521 if(i > k) {
1522 for (j=0; j<kn; j++) {
1523 hold=r[j][k];
1524 r[j][k]=-r[j][i];
1525 r[j][i]=hold;
1526 } // end for j
1527 } // end if i
1528 j=mm[k];
1529 if(j > k) {
1530 for (i=0; i<kn; i++) {
1531 hold=r[k][i];
1532 r[k][i]=-r[j][i];
1533 r[j][i]=hold;
1534 } // end for i
1535 } // end if
1536 } // end for k
1537 ////////////////////////////////////////////////////////////////////
1538 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1539 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1540 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1541 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1542 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1543 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1544 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1545 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1546 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1547 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1548 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1549 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1550 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1551 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1552 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1553 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1554 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1555 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1556 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1557 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1558
1559 Double_t x0,x1,x2,x3,x4;
1560 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1561 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1562 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1563 k03*(m[3]-savex3);
1564 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1565 k13*(m[3]-savex3);
1566 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1567 k23*(m[3]-savex3);
1568 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1569 k33*(m[3]-savex3);
1570 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1571 k43*(m[3]-savex3);
1572 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1573 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1574 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1575 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1576 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1577 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1578 c11=cin11-k10*cin10-k11*cin11-k12*cin21-k13*cin31;
1579 c21=cin21-k10*cin20-k11*cin21-k12*cin22-k13*cin32;
1580 c31=cin31-k10*cin30-k11*cin31-k12*cin32-k13*cin33;
1581 c41=cin41-k10*cin40-k11*cin41-k12*cin42-k13*cin43;
1582 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1583 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1584 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1585 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1586 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1587 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1588
1589 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1590 newTrack->PutCElements(c00,
1591 c10,c11,
1592 c20,c21,c22,
1593 c30,c31,c32,c33,
1594 c40,c41,c42,c43,c44); // put in track the
1595 // new cov matrix
1596 Double_t vmc[4][4];
1597 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1598 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1599 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1600 vmc[3][3]=v33-c33;
1601 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1602 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1603 vmc[2][3]=vmc[3][2];
1604 /////////////////////// vmc matrix inversion ///////////////////////
1605 d=1.;
1606 for(k=0; k<kn; k++) {
1607 ll[k]=k;
1608 mm[k]=k;
1609 big=vmc[k][k];
1610 for(j=k; j<kn ; j++) {
1611 for (i=j; i<kn; i++) {
1612 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) {
1613 big=vmc[i][j];
1614 ll[k]=i;
1615 mm[k]=j;
1616 } // end if
1617 } // end for i
1618 } // end for j
1619 //
1620 j= ll[k];
1621 if(j > k) {
1622 for(i=0; i<kn; i++) {
1623 hold=-vmc[k][i];
1624 vmc[k][i]=vmc[j][i];
1625 vmc[j][i]=hold;
1626 } // end for i
1627 } // end if
1628 //
1629 i=mm[k];
1630 if(i > k ) {
1631 for(j=0; j<kn; j++) {
1632 hold=-vmc[j][k];
1633 vmc[j][k]=vmc[j][i];
1634 vmc[j][i]=hold;
1635 } // end for j
1636 } // end if
1637 //
1638 if(!big) {
1639 d=0.;
1640 cout << "Singular matrix\n";
1641 } // end if
1642 for(i=0; i<kn; i++) {
1643 if(i == k) continue;
1644 vmc[i][k]=vmc[i][k]/(-big);
1645 } // end for i
1646 //
1647 for(i=0; i<kn; i++) {
1648 hold=vmc[i][k];
1649 for(j=0; j<kn; j++) {
1650 if(i == k || j == k) continue;
1651 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1652 } // end for j
1653 } // end for i
1654 //
1655 for(j=0; j<kn; j++) {
1656 if(j == k) continue;
1657 vmc[k][j]=vmc[k][j]/big;
1658 } // end for j
1659 //
1660 d=d*big;
1661 //
1662 vmc[k][k]=1./big;
1663 } // end for k
1664 //
1665 for(k=kn-1; k>=0; k--) {
1666 i=ll[k];
1667 if(i > k) {
1668 for (j=0; j<kn; j++) {
1669 hold=vmc[j][k];
1670 vmc[j][k]=-vmc[j][i];
1671 vmc[j][i]=hold;
1672 } // end for j
1673 } // end if i>k
1674 j=mm[k];
1675 if(j > k) {
1676 for (i=0; i<kn; i++) {
1677 hold=vmc[k][i];
1678 vmc[k][i]=-vmc[j][i];
1679 vmc[j][i]=hold;
1680 } // end for i
1681 } // end if j>k
1682 } // end for k
1683 ////////////////////////////////////////////////////////////////////
1684 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1685 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) )+
1686 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1687 2.*vmc[3][1]*(m[3]-x3) ) +
1688 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
1689 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1690 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
1691 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1692 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
1693}