Tracking in non-uniform nmagnetic field (Yu.Belikov)
[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>
13888096 33#include <TMath.h>
13888096 34#include <TBranch.h>
35#include <TVector.h>
13888096 36#include <TFile.h>
7d62fb64 37#include <TRandom.h>
13888096 38#include <TTree.h>
cbcfa38d 39
13888096 40#include "TParticle.h"
41#include "AliRun.h"
7d62fb64 42#include "AliITSDetTypeRec.h"
13888096 43#include "AliITSgeomSPD.h"
44#include "AliITSgeomSDD.h"
45#include "AliITSgeomSSD.h"
46#include "AliITSgeom.h"
13888096 47#include "AliITSRecPoint.h"
13888096 48#include "AliKalmanTrack.h"
49#include "AliMagF.h"
04b80329 50#include "AliITSTrackV1.h"
51#include "AliITSIOTrack.h"
52#include "AliITSRad.h"
e869281d 53#include "AliTPCtracker.h"
13888096 54#include "AliITSTrackerV1.h"
def162f4 55#include "AliITSPid.h"
5d12ce38 56#include "AliMC.h"
13888096 57
13888096 58ClassImp(AliITSTrackerV1)
55cd883f 59 //______________________________________________________________________
60AliITSTrackerV1::AliITSTrackerV1() {
61 //Default constructor
7d62fb64 62 //fITS = 0;
55cd883f 63 fresult = 0;
64ab0d55 64 fPtref=0.;
65 fChi2max=0.;
66 //fepsphi=0.;
67 //fepsz=0.;
55cd883f 68 frecPoints = 0;
69 fvettid = 0;
64ab0d55 70 fflagvert=0;
55cd883f 71 frl = 0;
64ab0d55 72 Int_t ia;
73 for(ia=0; ia<6; ia++) {
74 fNlad[ia]=0;
75 fNdet[ia]=0;
76 fAvrad[ia]=0.;
77 fDetx[ia]=0.;
78 fDetz[ia]=0.;
79 } // end for ia
55cd883f 80 fzmin = 0;
81 fzmax = 0;
82 fphimin = 0;
83 fphimax = 0;
84 fphidet = 0;
64ab0d55 85 fNRecPoints=0;
86 fRecCylR=0;
87 fRecCylPhi=0;
88 fRecCylZ=0;
89 fFieldFactor=0;
7d62fb64 90 fDetTypeRec = 0;
55cd883f 91}
b48af428 92//______________________________________________________________________
7d62fb64 93AliITSTrackerV1::AliITSTrackerV1(Int_t evnumber, Bool_t flag) {
b48af428 94 //Origin A. Badala' and G.S. Pappalardo:
95 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
96 // Class constructor. It does some initializations.
97
a49bb2c8 98 //PH Initialisation taken from the default constructor
7d62fb64 99 //fITS = IITTSS;
100 fDetTypeRec = new AliITSDetTypeRec();
101 fresult = 0;
102 fPtref = 0.;
103 fChi2max =0.;
104 frecPoints = 0;
105 fvettid = 0;
106 fflagvert = flag;
107 frl = 0;
108 fzmin = 0;
109 fzmax = 0;
110 fphimin = 0;
111 fphimax = 0;
112 fphidet = 0;
64ab0d55 113
7d62fb64 114 Int_t imax = 200,jmax = 450;
115 frl = new AliITSRad(imax,jmax);
116
117 ////////// gets information on geometry /////////////////////////////
118 AliRunLoader* rl = AliRunLoader::Open("galice.root");
119 rl->CdGAFile();
120 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
b48af428 121
7d62fb64 122 Int_t ll=1, dd=1;
123 TVector det(9);
124
125 Int_t ia;
126 for(ia=0; ia<6; ia++) {
127 fNlad[ia]=g1->GetNladders(ia+1);
128 fNdet[ia]=g1->GetNdetectors(ia+1);
129 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
130 } // end for ia
131
64ab0d55 132 //cout<<" mean radius = ";
7d62fb64 133 Int_t ib;
134 for(ib=0; ib<6; ib++) {
135 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
136 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
137 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
138 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
139 fAvrad[ib]=(r1+r2)/2.;
140 //cout<<fAvrad[ib]<<" ";
141 } // end for ib
b48af428 142 //cout<<"\n"; getchar();
7d62fb64 143
144 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
145 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
146
147 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
148 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
b48af428 149
150 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
151 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
152
153 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
154 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
155
156 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
157 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
158
159 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
160 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
161 //cout<<" Detx Detz\n";
162 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<
163 // fDetz[la]<<endl;
164 //getchar();
64ab0d55 165
b48af428 166 // allocate memory and define matrices fzmin, fzmax, fphimin and fphimax //
167 Double_t epsz=1.2;
168 Double_t epszdrift=0.05;
169
170 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
171 Int_t im1, im2, im2max;
172 for(im1=0; im1<6; im1++) {
173 im2max=fNdet[im1];
174 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
175 } // end for im1
176
177 for(im1=0; im1<6; im1++) {
178 im2max=fNdet[im1];
179 for(im2=0; im2<im2max; im2++) {
180 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
181 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
182 else
183 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
184 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
185 else
cbcfa38d 186 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
b48af428 187 if(im1==2 || im1==3) {
188 fzmin[im1][im2]-=epszdrift;
189 fzmax[im1][im2]+=epszdrift;
190 } // end if im1==2 || im1==3
191 } // end for im2
192 } // end for im1
13888096 193
b48af428 194 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
195 for(im1=0;im1<6;im1++) {
196 im2max=fNlad[im1];
197 fphimin[im1] = new Double_t[im2max];
198 fphimax[im1] = new Double_t[im2max];
199 } // end for im1
200
201 fphidet = new Double_t*[6];
202 for(im1=0; im1<6; im1++) {
203 im2max=fNlad[im1];
204 fphidet[im1] = new Double_t[im2max];
205 } // end for im1
206
def162f4 207 Double_t global[3],local[3];
b48af428 208 Double_t pigre=TMath::Pi();
209 Double_t xmin,ymin,xmax,ymax;
210
211 for(im1=0; im1<6; im1++) {
212 im2max=fNlad[im1];
213 for(im2=0; im2<im2max; im2++) {
214 Int_t idet=2;
215 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
216 fphidet[im1][im2] = TMath::ATan2(Double_t(det(1)),
217 Double_t(det(0)));
218 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
219 local[1]=local[2]=0.;
220 local[0]= -(fDetx[im1]);
221 if(im1==0) local[0]= (fDetx[im1]); //to take into account
222 // different reference system
223 g1->LtoG(im1+1,im2+1,idet,local,global);
224 xmax=global[0]; ymax=global[1];
225 local[0]= (fDetx[im1]);
226 if(im1==0) local[0]= -(fDetx[im1]);//take into account different
227 // reference system
228 g1->LtoG(im1+1,im2+1,idet,local,global);
229 xmin=global[0]; ymin=global[1];
230 fphimin[im1][im2]= TMath::ATan2(ymin,xmin);
231 if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
232 fphimax[im1][im2]= TMath::ATan2(ymax,xmax);
233 if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
234 } // end for im2
235 } // end for im1
64ab0d55 236//////////////////////////////////////////////////////////////////////////////////////////////////////////
237/////////////// allocate memory and define vector fNRecPoints and matrices fRecCylR, fRecCylPhi, fRecCylZ /////////////
238 gAlice->GetEvent(evnumber);
e869281d 239 Int_t numOfModules = g1->GetIndexMax();
240 fRecCylR = new Double_t *[numOfModules];
241 fRecCylPhi = new Double_t *[numOfModules];
242 fRecCylZ = new Double_t *[numOfModules];
64ab0d55 243 AliITSRecPoint *recp;
e869281d 244 fNRecPoints = new Int_t[numOfModules];
64ab0d55 245
e869281d 246 for(Int_t module=0; module<numOfModules; module++) {
7d62fb64 247 fDetTypeRec->ResetRecPoints();
248 gAlice->TreeR()->GetEvent(module);
249 frecPoints=fDetTypeRec->RecPoints();
64ab0d55 250 Int_t nRecPoints=fNRecPoints[module]=frecPoints->GetEntries();
64ab0d55 251 fRecCylR[module] = new Double_t[nRecPoints];
252 fRecCylPhi[module] = new Double_t[nRecPoints];
253 fRecCylZ[module] = new Double_t[nRecPoints];
254 Int_t ind;
255 for(ind=0; ind<fNRecPoints[module]; ind++) {
256 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(ind);
257 // Float_t global[3], local[3];
258 Double_t global[3], local[3];
259 local[0]=recp->GetX();
260 local[1]=0.;
261 local[2]= recp->GetZ();
262 g1->LtoG(module,local,global);
64ab0d55 263
264 Double_t r = TMath::Sqrt(global[0]*global[0]+global[1]*global[1]); // r hit
265 Double_t phi = TMath::ATan2(global[1],global[0]); if(phi<0.) phi+=2.*TMath::Pi(); // phi hit
def162f4 266 Double_t z = global[2]; // z hit
64ab0d55 267
268 fRecCylR[module][ind]=r;
269 fRecCylPhi[module][ind]=phi;
270 fRecCylZ[module][ind]=z;
271 }
272 }
273 //}
274 //}
275////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
276
b48af428 277
278 ////////// gets magnetic field factor //////////////////////////////
279
280 AliMagF * fieldPointer = gAlice->Field();
af50998a 281 // fFieldFactor = (Double_t)fieldPointer->Factor();
282 fFieldFactor =(Double_t)fieldPointer-> SolenoidField()/10/.2;
283 // cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
7d62fb64 284 delete rl;
285
b48af428 286}
287//______________________________________________________________________
d0df5576 288AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) : TObject(cobj) {
b48af428 289 // Origin A. Badala' and G.S. Pappalardo:
290 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
291 // copy constructor
64ab0d55 292
7d62fb64 293 // *fITS = *cobj.fITS;
b48af428 294 *fresult = *cobj.fresult;
295 fPtref = cobj.fPtref;
296 fChi2max = cobj.fChi2max;
297 **fvettid = **cobj.fvettid;
298 fflagvert = cobj.fflagvert;
299 Int_t imax=200,jmax=450;
300 frl = new AliITSRad(imax,jmax);
301 *frl = *cobj.frl;
302 fFieldFactor = cobj.fFieldFactor;
303 Int_t i,im1,im2,im2max;
304 for(i=0; i<6; i++) {
305 fNlad[i] = cobj.fNlad[i];
306 fNdet[i] = cobj.fNdet[i];
307 fAvrad[i] = cobj.fAvrad[i];
308 fDetx[i] = cobj.fDetx[i];
309 fDetz[i] = cobj.fDetz[i];
310 } // end or i
311 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
312 for(im1=0; im1<6; im1++) {
313 im2max=fNdet[im1];
314 fzmin[im1] = new Double_t[im2max];
315 fzmax[im1] = new Double_t[im2max];
316 } // end for im1
cbcfa38d 317 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 318 for(im1=0;im1<6;im1++) {
319 im2max=fNlad[im1];
320 fphimin[im1] = new Double_t[im2max];
321 fphimax[im1] = new Double_t[im2max];
322 } // end for im1
323
324 fphidet = new Double_t*[6];
325 for(im1=0; im1<6; im1++) {
326 im2max=fNlad[im1];
327 fphidet[im1] = new Double_t[im2max];
328 } // end for im1
329 for(im1=0; im1<6; im1++) {
330 im2max=fNdet[im1];
331 for(im2=0; im2<im2max; im2++) {
332 fzmin[im1][im2]=cobj.fzmin[im1][im2];
333 fzmax[im1][im2]=cobj.fzmax[im1][im2];
334 } // end for im2
335 } // end for im1
336 for(im1=0; im1<6; im1++) {
337 im2max=fNlad[im1];
338 for(im2=0; im2<im2max; im2++) {
339 fphimin[im1][im2]=cobj.fphimin[im1][im2];
340 fphimax[im1][im2]=cobj.fphimax[im1][im2];
341 fphidet[im1][im2]=cobj.fphidet[im1][im2];
342 } // end for im2
343 } // end for im2
64ab0d55 344
345
7d62fb64 346 AliRunLoader* rl = AliRunLoader::Open("galice.root");
347 rl->CdGAFile();
348 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
349
e869281d 350 Int_t numOfModules = g1->GetIndexMax();
64ab0d55 351 /*
e869281d 352 fRecCylR = new Float_t *[numOfModules];
353 fRecCylPhi = new Float_t *[numOfModules];
354 fRecCylZ = new Float_t *[numOfModules];
64ab0d55 355 */
e869281d 356 fRecCylR = new Double_t *[numOfModules];
357 fRecCylPhi = new Double_t *[numOfModules];
358 fRecCylZ = new Double_t *[numOfModules];
359 fNRecPoints = new Int_t[numOfModules];
360 for(Int_t module=0; module<numOfModules; module++) {
64ab0d55 361 Int_t nRecPoints=fNRecPoints[module]=cobj.fNRecPoints[module];
362 /*
363 fRecCylR[module] = new Float_t[nRecPoints];
364 fRecCylPhi[module] = new Float_t[nRecPoints];
365 fRecCylZ[module] = new Float_t[nRecPoints];
366 */
367 fRecCylR[module] = new Double_t[nRecPoints];
368 fRecCylPhi[module] = new Double_t[nRecPoints];
369 fRecCylZ[module] = new Double_t[nRecPoints];
370 Int_t ind;
371 for(ind=0; ind<nRecPoints; ind++) {
372 fRecCylR[module][ind]=cobj.fRecCylR[module][ind];
373 fRecCylPhi[module][ind]=cobj.fRecCylPhi[module][ind];
374 fRecCylZ[module][ind]=cobj.fRecCylZ[module][ind];
375 }
376 }
7d62fb64 377 delete rl;
64ab0d55 378
379}
e869281d 380/*
381//______________________________________________________________________
382void AliITSTrackerV1::DelMatrix(Int_t numOfModules) {
383 // cleanup of some data members
384 for(Int_t mod=0; mod<numOfModules; mod++) {
64ab0d55 385 delete fRecCylR[mod];
386 delete fRecCylPhi[mod];
387 delete fRecCylZ[mod];
388 }
389 delete fRecCylR;
390 delete fRecCylPhi;
391 delete fRecCylZ;
cbcfa38d 392}
e869281d 393*/
b48af428 394//______________________________________________________________________
cbcfa38d 395AliITSTrackerV1::~AliITSTrackerV1(){
b48af428 396 // Origin A. Badala' and G.S. Pappalardo:
397 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
64ab0d55 398 // class destructor
399 delete frl;
400 delete fNRecPoints;
401 for(Int_t i=0; i<6; i++) {
402 delete fzmin[i];
403 delete fzmax[i];
404 delete fphimin[i];
405 delete fphimax[i];
406 delete fphidet[i];
407 }
408
409 delete fzmin;
410 delete fzmax;
411 delete fphimin;
412 delete fphimax;
413 delete fphidet;
414
13888096 415}
b48af428 416//______________________________________________________________________
e869281d 417AliITSTrackerV1 &AliITSTrackerV1::operator=(const AliITSTrackerV1 &obj) {
b48af428 418 // Origin A. Badala' and G.S. Pappalardo:
419 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
420 // assignement operator
421
7d62fb64 422 // *fITS = *obj.fITS;
b48af428 423 *fresult = *obj.fresult;
424 fPtref = obj.fPtref;
425 fChi2max = obj.fChi2max;
426 **fvettid = **obj.fvettid;
427 fflagvert = obj.fflagvert;
428 Int_t imax=200,jmax=450;
429 frl = new AliITSRad(imax,jmax);
430 *frl = *obj.frl;
431 fFieldFactor = obj.fFieldFactor;
432 Int_t i;
433 for(i=0; i<6; i++) {
434 fNlad[i] = obj.fNlad[i];
435 fNdet[i] = obj.fNdet[i];
436 fAvrad[i] = obj.fAvrad[i];
437 fDetx[i] = obj.fDetx[i];
438 fDetz[i] = obj.fDetz[i];
439 } // end for i
440 fzmin = new Double_t*[6];
441 fzmax = new Double_t*[6];
442 Int_t im1, im2, im2max;
443 for(im1=0; im1<6; im1++) {
444 im2max=fNdet[im1];
445 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
446 } // end for im1
cbcfa38d 447 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 448 for(im1=0;im1<6;im1++) {
449 im2max=fNlad[im1];
450 fphimin[im1] = new Double_t[im2max];
451 fphimax[im1] = new Double_t[im2max];
452 } // end for im1
453
454 fphidet = new Double_t*[6];
455 for(im1=0; im1<6; im1++) {
456 im2max=fNlad[im1];
457 fphidet[im1] = new Double_t[im2max];
458 } // end for im1
459 for(im1=0; im1<6; im1++) {
460 im2max=fNdet[im1];
461 for(im2=0; im2<im2max; im2++) {
462 fzmin[im1][im2]=obj.fzmin[im1][im2];
463 fzmax[im1][im2]=obj.fzmax[im1][im2];
464 } // end for im2
465 } // end for im1
466 for(im1=0; im1<6; im1++) {
467 im2max=fNlad[im1];
468 for(im2=0; im2<im2max; im2++) {
469 fphimin[im1][im2]=obj.fphimin[im1][im2];
470 fphimax[im1][im2]=obj.fphimax[im1][im2];
471 fphidet[im1][im2]=obj.fphidet[im1][im2];
472 } // end for im2
473 } // end for im1
474
7d62fb64 475 AliRunLoader* rl = AliRunLoader::Open("galice.root");
476 rl->CdGAFile();
477 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
478 // AliITSgeom *g1 = fITS->GetITSgeom();
e869281d 479 Int_t numOfModules = g1->GetIndexMax();
480 fRecCylR = new Double_t *[numOfModules];
481 fRecCylPhi = new Double_t *[numOfModules];
482 fRecCylZ = new Double_t *[numOfModules];
483 fNRecPoints = new Int_t[numOfModules];
484 for(Int_t module=0; module<numOfModules; module++) {
64ab0d55 485 Int_t nRecPoints=fNRecPoints[module]=obj.fNRecPoints[module];
64ab0d55 486 fRecCylR[module] = new Double_t[nRecPoints];
487 fRecCylPhi[module] = new Double_t[nRecPoints];
488 fRecCylZ[module] = new Double_t[nRecPoints];
489 Int_t ind;
490 for(ind=0; ind<nRecPoints; ind++) {
491 fRecCylR[module][ind]=obj.fRecCylR[module][ind];
492 fRecCylPhi[module][ind]=obj.fRecCylPhi[module][ind];
493 fRecCylZ[module][ind]=obj.fRecCylZ[module][ind];
494 }
495 }
496
497
7d62fb64 498 delete rl;
b48af428 499 return *this;
04b80329 500}
b48af428 501//______________________________________________________________________
502void AliITSTrackerV1::DoTracking(Int_t evNumber,Int_t minTr,Int_t maxTr,
61231d74 503 TFile *file, Bool_t realmass) {
b48af428 504 // Origin A. Badala' and G.S. Pappalardo:
505 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
506 // The method needs the event number, the minimum and maximum order
507 // number of TPC tracks that
508 // are to be tracked trough the ITS, and the file where the recpoints
509 // are registered.
510 // The method can be called by a macro. It preforms the tracking for
511 // all good TPC tracks
512
e81f4d4f 513 printf("begin DoTracking - file %p\n",(void*)file);
b48af428 514
515 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 516
c84a5e9e 517 AliKalmanTrack::SetFieldMap(gAlice->Field());
af50998a 518 // cout<<" field = "<<gAlice->Field()->SolenoidField()<<endl;
519
b48af428 520
521 TFile *cf=TFile::Open("AliTPCclusters.root");
9040b789 522 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60_150x60");
b48af428 523 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
524
525 cf->cd();
7d62fb64 526 AliRunLoader* rl = AliRunLoader::Open("galice.root");
527 AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
528 TString foldname(itsl->GetEventFolder()->GetName());
529 //TString foldname(fITS->GetLoader()->GetEventFolder()->GetName());
530 delete rl;
c630aafd 531 printf("This method is not converted to the NewIO !\n"); //I.B.
532 return; //I.B.
533 AliTPCtracker *tracker = new AliTPCtracker(digp); //I.B.
88cb7938 534 //PH tracker->SetEventNumber(evNumber); //I.B.
b48af428 535
536 // Load clusters
c630aafd 537 printf("This method is not converted to the NewIO !\n"); //I.B.
538 return; //I.B.
539 tracker->LoadClusters(0); //I.B.
b48af428 540
541 // Load tracks
64ab0d55 542 TFile *tf=TFile::Open("AliTPCtracksSorted.root");
b48af428 543 if (!tf->IsOpen()) {
544 cerr<<"Can't open AliTPCtracksSorted.root !\n";
545 return ;
546 } // end if
547 TObjArray tracks(200000);
548 char tname[100];
549 sprintf(tname,"TreeT_TPC_%d",evNumber);
550
551 TTree *tracktree=(TTree*)tf->Get(tname);
552 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
553 TBranch *tbranch=tracktree->GetBranch("tracks");
554 Int_t nentr=(Int_t)tracktree->GetEntries();
555 Int_t kk;
556
def162f4 557 AliITSRecPoint *recp; // oggi
558 AliTPCtrack *ioTrackTPC=0;
b48af428 559 for (kk=0; kk<nentr; kk++) {
560 ioTrackTPC=new AliTPCtrack;
561 tbranch->SetAddress(&ioTrackTPC);
562 tracktree->GetEvent(kk);
563 tracker->CookLabel(ioTrackTPC,0.1);
564 tracks.AddLast(ioTrackTPC);
565 } // end for kk
566 delete tracker;
567 tf->Close();
568
569 Int_t nt = tracks.GetEntriesFast();
570 cerr<<"Number of found tracks "<<nt<<endl;
571
572 TVector vec(5);
573 TTree *tr=gAlice->TreeR();
574 Int_t nent=(Int_t)tr->GetEntries();
7d62fb64 575 frecPoints = fDetTypeRec->RecPoints();
b48af428 576
577 Int_t numbpoints;
578 Int_t totalpoints=0;
579 Int_t *np = new Int_t[nent];
580 fvettid = new Int_t* [nent];
581 Int_t mod;
582
583 for (mod=0; mod<nent; mod++) {
584 fvettid[mod]=0;
7d62fb64 585 fDetTypeRec->ResetRecPoints();
b48af428 586 gAlice->TreeR()->GetEvent(mod);
587 numbpoints = frecPoints->GetEntries();
588 totalpoints+=numbpoints;
589 np[mod] = numbpoints;
590 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n";getchar();
591 fvettid[mod] = new Int_t[numbpoints];
592 Int_t ii;
593 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
594 } // end for mod
595
596 AliTPCtrack *track=0;
597
598 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
599
600 TVector vgeant(3);
601
602 TTree tracktree1("TreeT","Tree with ITS tracks");
603 AliITSIOTrack *ioTrack=0;
def162f4 604 AliITSPid *pid=new AliITSPid(1000); // oggi
605
b48af428 606 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
607
def162f4 608 TDatabasePDG * db = new TDatabasePDG;
61231d74 609
b48af428 610 Int_t j;
611 for (j=minTr; j<=maxTr; j++) {
612 track=(AliTPCtrack*)tracks.UncheckedAt(j);
613 if (!track) continue;
61231d74 614
615 /// mass definition ////////////////////////
616 Double_t mass=0.13956995;
617 Int_t pcode=211; // a pion by default
def162f4 618
61231d74 619 if(realmass) {
def162f4 620 if(TMath::Abs(pcode)<20443) mass=db->GetParticle(pcode)->Mass();
61231d74 621 }
def162f4 622 else {
623 mass = track->GetMass();
e286bade 624// cout << "Mass = " << mass << endl;
def162f4 625 }
626
61231d74 627
628
d3ab000e 629 // new propagation to the end of TPC
64ab0d55 630 Double_t xk=80.;
631 // track->PropagateTo(xk,0.,0.); //Ne if it's still there //attenzione funziona solo se modifica in TPC
632 // Double_t xk=77.415;
d3ab000e 633 track->PropagateTo(xk, 28.94, 1.204e-3);
634 xk-=0.005;
635 track->PropagateTo(xk, 44.77,1.71); //Tedlar
636 xk-=0.02;
637 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
638 xk-=2.0;
639 track->PropagateTo(xk, 41.28, 0.029);//Nomex
640 xk-=0.02;
641 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
642 xk-=0.005;
643 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
644
645 xk=61.;
64ab0d55 646 // track->PropagateTo(xk,0.,0.); //C02
647 track->PropagateTo(xk,36.2,1.98e-3); //C02 //attenzione funziona solo se modifica in TPC
d3ab000e 648
649 xk -=0.005;
650 track->PropagateTo(xk, 24.01, 2.7); //Al
651 xk -=0.005;
652 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
653 xk -=0.02;
654 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
655 xk -=0.5;
656 track->PropagateTo(xk, 41.28, 0.029); //Nomex
657 xk -=0.02;
658 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
659 xk -=0.005;
660 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
661 xk -=0.005;
64ab0d55 662 track->PropagateTo(xk, 24.01, 2.7); //Al
af50998a 663
64ab0d55 664 ////////////////////////////////////////////////////////////////////////////////////////////////////////
af50998a 665 //AliITSTrackV1 trackITS(*track);
666 AliITSTrackV1 trackITS(*track, fFieldFactor);
667 //cout<<" fFieldFactor = "<<fFieldFactor<<"\n";
61231d74 668 trackITS.PutMass(mass); //new to add mass to track
b48af428 669 if(fresult){ delete fresult; fresult=0;}
670 fresult = new AliITSTrackV1(trackITS);
671
672 AliITSTrackV1 primaryTrack(trackITS);
673 vgeant=(*fresult).GetVertex();
674
675 // Definition of dv and zv for vertex constraint
676 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
677 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
13888096 678 Double_t uniform= gRandom->Uniform();
679 Double_t signdv;
680 if(uniform<=0.5) signdv=-1.;
b48af428 681 else
682 signdv=1.;
683
04b80329 684 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
b48af428 685 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
686 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
687 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
688 trackITS.SetDv(dv);
689 trackITS.SetZv(zv);
690 trackITS.SetsigmaDv(sigmaDv);
691 trackITS.SetsigmaZv(sigmaZv);
692 (*fresult).SetDv(dv);
693 (*fresult).SetZv(zv);
694 (*fresult).SetsigmaDv(sigmaDv);
695 (*fresult).SetsigmaZv(sigmaZv);
696 primaryTrack.SetDv(dv);
697 primaryTrack.SetZv(zv);
698 primaryTrack.SetsigmaDv(sigmaDv);
699 primaryTrack.SetsigmaZv(sigmaZv);
088e0b8d 700 primaryTrack.PrimaryTrack();
b48af428 701 TVector d2=primaryTrack.Getd2();
702 TVector tgl2=primaryTrack.Gettgl2();
703 TVector dtgl=primaryTrack.Getdtgl();
704 trackITS.Setd2(d2); trackITS.Settgl2(tgl2);
705 trackITS.Setdtgl(dtgl);
706 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2);
707 (*fresult).Setdtgl(dtgl);
708 /*
709 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
710 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
711 */
712 TList *list= new TList();
713
714 list->AddLast(&trackITS);
715
716 fPtref=TMath::Abs( (trackITS).GetPt() );
af50998a 717 //cout<<" fPtref = " <<fPtref<<"\n";
b48af428 718 if(fPtref>1.0) fChi2max=40.;
719 if(fPtref<=1.0) fChi2max=20.;
720 if(fPtref<0.4 ) fChi2max=100.;
721 if(fPtref<0.2 ) fChi2max=40.;
722 // if(fPtref<0.4 ) fChi2max=30.;
723 // if(fPtref<0.2 ) fChi2max=20.;
724 //if(fPtref<0.2 ) fChi2max=10.;
725 //if(fPtref<0.1 ) fChi2max=5.;
c57de405 726 //cout << "\n Pt = " << fPtref <<"\n"; //stampa
b48af428 727 RecursiveTracking(list);
728 list->Delete();
729 delete list;
730
731 Int_t itot=-1;
732 TVector vecTotLabRef(18);
733 Int_t lay, k;
734 for(lay=5; lay>=0; lay--) {
735 TVector vecLabRef(3);
736 vecLabRef=(*fresult).GetLabTrack(lay);
737 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
738 for(k=0; k<3; k++){
04b80329 739 Int_t lpp=(Int_t)vecLabRef(k);
740 if(lpp>=0) {
5d12ce38 741 TParticle *p=(TParticle*) gAlice->GetMCApp()->Particle(lpp);
b48af428 742 Int_t pcode=p->GetPdgCode();
743 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
744 } // end if
745 itot++; vecTotLabRef(itot)=vecLabRef(k);
64ab0d55 746 if(vecLabRef(k)==0. && clustZ == -1.) vecTotLabRef(itot) =-3.;
b48af428 747 } // end for k
748 } // end for lay
749 Long_t labref;
750 Int_t freq;
751 (*fresult).Search(vecTotLabRef, labref, freq);
752
753 //if(freq < 6) labref=-labref; // cinque - sei
754 if(freq < 5) labref=-labref; // cinque - sei
755 (*fresult).SetLabel(labref);
756
757 // cout<<" progressive track number = "<<j<<"\r";
758 // cout<<j<<"\r";
759 Int_t numOfCluster=(*fresult).GetNumClust();
c57de405 760 //cout<<" progressive track number = "<<j<<"\n"; // stampa
b48af428 761 Long_t labITS=(*fresult).GetLabel();
c57de405 762 //cout << " ITS track label = " << labITS << "\n"; // stampa
b48af428 763 Int_t lab=track->GetLabel();
c57de405 764 //cout << " TPC track label = " << lab <<"\n"; // stampa
b48af428 765 //propagation to vertex
766
767 Double_t rbeam=3.;
def162f4 768 if((*fresult).DoNotCross(rbeam)) continue; //no intersection with beampipe
b48af428 769 (*fresult).Propagation(rbeam);
770 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
771 (*fresult).GetCElements(c00,
772 c10,c11,
773 c20,c21,c22,
774 c30,c31,c32,c33,
775 c40,c41,c42,c43,c44);
13888096 776
b48af428 777 Double_t pt=TMath::Abs((*fresult).GetPt());
778 Double_t dr=(*fresult).GetD();
779 Double_t z=(*fresult).GetZ();
780 Double_t tgl=(*fresult).GetTgl();
781 Double_t c=(*fresult).GetC();
782 Double_t cy=c/2.;
783 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
784 dz-=vgeant(2);
785 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
786 Double_t phi=(*fresult).Getphi();
787 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
788 Double_t duepi=2.*TMath::Pi();
789 if(phivertex>duepi) phivertex-=duepi;
790 if(phivertex<0.) phivertex+=duepi;
791 /////////////////////////////////////////////////////////////
792 Int_t idmodule,idpoint;
793 if(numOfCluster >=5) { // cinque - sei
794 //if(numOfCluster ==6) { // cinque - sei
795 AliITSIOTrack outTrack;
796 ioTrack=&outTrack;
797 ioTrack->SetStatePhi(phi);
798 ioTrack->SetStateZ(z);
799 ioTrack->SetStateD(dr);
800 ioTrack->SetStateTgl(tgl);
801 ioTrack->SetStateC(c);
802 Double_t radius=(*fresult).Getrtrack();
803 ioTrack->SetRadius(radius);
804 Int_t charge;
805 if(c>0.) charge=-1; else charge=1;
806 ioTrack->SetCharge(charge);
def162f4 807 Double_t trackmass=(*fresult).GetMass(); // oggi
808 ioTrack->SetMass(trackmass); // oggi
b48af428 809 ioTrack->SetCovMatrix(c00,
810 c10,c11,
811 c20,c21,c22,
812 c30,c31,c32,c33,
813 c40,c41,c42,c43,c44);
814 Double_t px=pt*TMath::Cos(phivertex);
815 Double_t py=pt*TMath::Sin(phivertex);
816 Double_t pz=pt*tgl;
817 Double_t xtrack=dr*TMath::Sin(phivertex);
818 Double_t ytrack=dr*TMath::Cos(phivertex);
819 Double_t ztrack=dz+vgeant(2);
820 ioTrack->SetPx(px);
821 ioTrack->SetPy(py);
822 ioTrack->SetPz(pz);
823 ioTrack->SetX(xtrack);
824 ioTrack->SetY(ytrack);
825 ioTrack->SetZ(ztrack);
826 ioTrack->SetLabel(labITS);
827 ioTrack->SetTPCLabel(lab);
61231d74 828 ioTrack->SetDz(dz);
b48af428 829 Int_t il;
def162f4 830 /*
831 for(il=0;il<6; il++){
b48af428 832 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
833 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
834 } // end for il
def162f4 835 */
836 //tracktree1.Fill();
837 Float_t q[4]={-1.,-1.,-1.,-1.};
838 Float_t globaldedx=0.;
b48af428 839 for (il=0;il<6;il++) {
840 idpoint=(*fresult).GetIdPoint(il);
841 idmodule=(*fresult).GetIdModule(il);
61231d74 842 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1;
843
b48af428 844 ioTrack->SetIdPoint(il,idpoint);
845 ioTrack->SetIdModule(il,idmodule);
def162f4 846 //// for q definition
847 if(il>1){
848 if(idmodule>0.){
7d62fb64 849 fDetTypeRec->ResetRecPoints();
def162f4 850 gAlice->TreeR()->GetEvent(idmodule);
851 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(idpoint);
852 q[il-2]=recp->GetQ()*(*fresult).Getfcor(il-2);
853 }
854 }
855 } // end for il
856 q[0]/=280.; q[1]/=280.;
857 q[2]/=38.; q[3]/=38.;
858
859 // cout<<" q prima = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
860
861 Int_t swap;
862 do{
863 swap=0;
864 for (il=0; il<3; il++) {
865 if (q[il]<=q[il+1]) continue;
866 Float_t tmp=q[il];
867 q[il]=q[il+1]; q[il+1]=tmp;
868 swap++;
869 }
870 } while(swap);
871
872
873 // cout<<" q dopo = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
874
875 if(q[0]<0.) {
876 q[0]=q[1];
877 q[1]=q[2];
878 q[2]=q[3];
879 q[3]=-1.;
880 }
881
882 // cout<<" q dopo if = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
883
884 globaldedx=(q[0]+q[1])/2.;
885
886 // if(q[3]> 0.) globaldedx=(q[0]+q[1]+q[2]+q[3])/4.;
887 // else globaldedx=(q[0]+q[1]+q[2])/3.;
888
889 ioTrack->SetdEdx(globaldedx);
890 ioTrack->SetPid(pid->GetPcode(ioTrack));
891
892 tracktree1.Fill();
b48af428 893 } // end if on numOfCluster
894 //gObjectTable->Print(); // stampa memoria
895 } // end for (int j=minTr; j<=maxTr; j++)
61231d74 896 delete db;
b48af428 897 static Bool_t first=kTRUE;
898 static TFile *tfile;
899 if(first) {
900 tfile=new TFile("itstracks.root","RECREATE");
901 //cout<<"I have opened itstracks.root file "<<endl;
902 } // end if
903 first=kFALSE;
904 tfile->cd();
905 tfile->ls();
906 char hname[30];
907 sprintf(hname,"TreeT%d",evNumber);
def162f4 908 cout << "Number of saved ITS tracks " << tracktree1.GetEntries() << endl;
b48af428 909 tracktree1.Write(hname);
910
911 TTree *fAli=gAlice->TreeK();
912 TFile *fileAli=0;
913 if (fAli) fileAli =fAli->GetCurrentFile();
914 fileAli->cd();
915 ////////////////////////////////////////////////////////////////////
916
917 printf("delete vectors\n");
918 if(np) delete [] np;
919 if(fvettid) delete [] fvettid;
920 if(fresult) {delete fresult; fresult=0;}
04b80329 921}
b48af428 922//______________________________________________________________________
04b80329 923void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
b48af428 924 // This function perform the recursive tracking in ITS detectors
925 // reference is a pointer to the final best track
926 // Origin A. Badala' and G.S. Pappalardo:
927 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
928 // The authors thank Mariana Bondila to have help them to resolve some
929 // problems. July-2000
930
931 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9;
932 // Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
933
934 //////////////////////
935 Float_t sigmaphil[6], sigmazl[6];
936 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
937 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
938 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
939 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
940 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
941 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
942 sigmazl[0]=1e-2;
943 sigmazl[1]=1e-2;
944 sigmazl[2]=7.84e-4;
945 sigmazl[3]=7.84e-4;
946 sigmazl[4]=0.6889;
947 sigmazl[5]=0.6889;
948 ///////////////////////////////////////////////////////////
949 Int_t index;
7d62fb64 950 AliRunLoader* rl = AliRunLoader::Open("galice.root");
951 rl->CdGAFile();
952 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
953
b48af428 954 AliITSRecPoint *recp;
955 for(index =0; index<trackITSlist->GetSize(); index++) {
956 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
957 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
958 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
959 // cout<<"fvtrack =" <<"\n";
960 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "
961 // <<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "
962 // <<(*trackITS)(4)<<"\n";
963 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
964 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
965 // getchar();
966 Double_t chi2Now, chi2Ref;
967 Float_t numClustRef = fresult->GetNumClust();
968 if((*trackITS).GetLayer()==1 ) {
969 chi2Now = trackITS->GetChi2();
970 Float_t numClustNow = trackITS->GetNumClust();
971 if(trackITS->GetNumClust())
972 chi2Now /= (Double_t)trackITS->GetNumClust();
973 chi2Ref = fresult->GetChi2();
974 if(fresult->GetNumClust())
975 chi2Ref /= (Double_t)fresult->GetNumClust();
976 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
977 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
978 if((numClustNow == numClustRef )&&
979 (chi2Now < chi2Ref)) {
980 *fresult = *trackITS;
981 } // end if
982 continue;
983 } // end if
984
985 if(trackITS->Getfnoclust()>=2) continue;
986 Float_t numClustNow = trackITS->GetNumClust();
987 if(numClustNow) {
988 chi2Now = trackITS->GetChi2();
989
990 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
991 //cout<<" chi2Now = "<<chi2Now<<"\n";
64ab0d55 992
b48af428 993 chi2Now/=numClustNow;
994 if(fPtref > 1.0 && chi2Now > 30.) continue;
995 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
996 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
997 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
998 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
999 if(fPtref <= 0.2 && chi2Now > 7.) continue;
1000 /////////////////////////////
1001 } // end if
1002
1003 Int_t layerInit = (*trackITS).GetLayer();
1004 Int_t layernew = layerInit - 2;// -1 for new layer, -1 for matrix index
1005 TList listoftrack;
1006 Int_t ladp, ladm, detp,detm,ladinters,detinters;
1007 Int_t layerfin=layerInit-1;
1008 // cout<<"Prima di intersection \n";
b48af428 1009 Int_t outinters=Intersection(*trackITS,layerfin,ladinters,detinters);
b48af428 1010 // cout<<" outinters = "<<outinters<<"\n";
1011 // cout<<" Layer ladder detector intersection ="
1012 // <<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
1013 // cout << " phiinters zinters = "<<(*trackITS)(0)
1014 // << " "<<(*trackITS)(1)<<"\n"; getchar();
1015 if(outinters==-1) continue;
1016 Int_t flaghit=0;
def162f4 1017 (*trackITS).SetLayer(layerfin); // oggi
1018 (*trackITS).Setfcor(); // oggi
b48af428 1019 if(outinters==0){
1020 TVector toucLad(9), toucDet(9);
1021 Int_t lycur=layerfin;
1022 ladp=ladinters+1;
1023 ladm=ladinters-1;
1024 if(ladm <= 0) ladm=fNlad[layerfin-1];
1025 if(ladp > fNlad[layerfin-1]) ladp=1;
1026 detp=detinters+1;
1027 detm=detinters-1;
1028 Int_t idetot=1;
1029 /*
1030 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
1031 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
1032 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
1033 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
1034 if(detm > 0 && detp <= fNdet[layerfin-1]) {
1035 idetot=9;
1036 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1037 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
1038 } // end if
1039 if(detm > 0 && detp > fNdet[layerfin-1]) {
1040 idetot=6;
1041 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1042 } // end if
1043 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
1044 idetot=6;
1045 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
1046 } // end if
1047 */
f66ae545 1048 Float_t epsphi=5.0, epsz=5.0;
b48af428 1049 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
64ab0d55 1050 // new definition of idetot e toucLad e toucDet to be
b48af428 1051 // transformed in a method
1052 // these values could be modified
1053 Float_t pigre=TMath::Pi();
1054 Float_t rangephi=5., rangez=5.;
1055 if(layerfin==1 || layerfin ==2){
1056 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1057 (*trackITS).GetSigmaphi());
1058 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1059 (*trackITS).GetSigmaZ());
1060 } // end if
1061 if(layerfin==3 || layerfin ==4){
1062 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1063 // (*trackITS).GetSigmaphi());
1064 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+
1065 // (*trackITS).GetSigmaZ());
1066 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1067 (*trackITS).GetSigmaphi());
1068 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1069 (*trackITS).GetSigmaZ());
1070 } // end if
1071 if(layerfin==5 || layerfin ==6){
1072 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1073 (*trackITS).GetSigmaphi());
1074 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1075 (*trackITS).GetSigmaZ());
1076 } // end if
1077 Float_t phinters, zinters;
1078 phinters=(*trackITS).Getphi();
1079 zinters=(*trackITS).GetZ();
1080 Float_t distz = 0.0;
1081 Float_t phicm, phicp, distphim, distphip;
1082 phicm=phinters;
cf411bb5 1083 if(phinters>fphimax[layerfin-1][ladm-1]) phicm=phinters-2*pigre; //corretto il 20-11-2001
1084 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm-1]); //corretto il 20-11-2001
b48af428 1085 phicp=phinters;
cf411bb5 1086 //cout<<" fNlad[layerfin-1] e ladp = "<<fNlad[layerfin-1]<<" "<<ladp<<endl;
1087 if(phinters>fphimin[layerfin-1][ladp-1]) phicp=phinters-2.*pigre; //corretto il 20-11-2001
1088 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp-1]); //corretto il 20-11-2001
b48af428 1089 Int_t flagzmin=0;
1090 Int_t flagzmax=0;
1091 idetot=1;
1092 toucLad(0)=ladinters; toucDet(0)=detinters;
1093 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
1094 if(detm>0 && rangez>=distz){
1095 flagzmin=1;
1096 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
1097 if(rangephi>=distphim){
1098 idetot++;
1099 toucLad(idetot-1)=ladm;
1100 toucDet(idetot-1)=detinters;
1101 idetot++;
1102 toucLad(idetot-1)=ladm;
1103 toucDet(idetot-1)=detm;
1104 } // end if
1105 if(rangephi>=distphip){
1106 idetot++;
1107 toucLad(idetot-1)=ladp;
1108 toucDet(idetot-1)=detinters;
1109 idetot++;
1110 toucLad(idetot-1)=ladp;
1111 toucDet(idetot-1)=detm;
1112 } // end if
1113 } //end detm>0....
1114 if(detp<=fNdet[layerfin-1])
1115 distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
1116 if(detp<=fNdet[layerfin-1] && rangez>=distz){
1117 flagzmax=1;
1118 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
1119 if(rangephi>=distphim){
1120 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
1121 if(flagzmin == 0) {
1122 idetot++;
1123 toucLad(idetot-1)=ladm;
1124 toucDet(idetot-1)=detinters;
1125 } // end if
1126 } // end if
1127 if(rangephi>=distphip){
1128 idetot++;
1129 toucLad(idetot-1)=ladp;
1130 toucDet(idetot-1)=detp;
1131 if(flagzmin == 0) {
1132 idetot++;
1133 toucLad(idetot-1)=ladp;
1134 toucDet(idetot-1)=detinters;
1135 } // end if
1136 } // end if
1137 } //end detm<fNdet[.......
1138
1139 if(flagzmin == 0 && flagzmax==0){
1140 if(rangephi>=distphim){
1141 idetot++;
1142 toucLad(idetot-1)=ladm;
1143 toucDet(idetot-1)=detinters;
1144 } // end if
1145 if(rangephi>=distphip){
1146 idetot++;
1147 toucLad(idetot-1)=ladp;
1148 toucDet(idetot-1)=detinters;
1149 } // end if
1150 } // end if
1151 ////////////////////////////////////////////////////////////
1152 Int_t iriv;
1153 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
1154 ///////////////////////////////////////////////////////
1155 /*** Rec points sorted by module *****/
1156 /**************************************/
64ab0d55 1157 Int_t indexmod;
b48af428 1158 indexmod = g1->GetModuleIndex(lycur,(Int_t)toucLad(iriv),
64ab0d55 1159 (Int_t)toucDet(iriv));
7d62fb64 1160 fDetTypeRec->ResetRecPoints();
b48af428 1161 gAlice->TreeR()->GetEvent(indexmod);
1162 Int_t npoints=frecPoints->GetEntries();
64ab0d55 1163
b48af428 1164 Int_t indnew;
1165 for(indnew=0; indnew<npoints; indnew++){
1166 if (*(fvettid[indexmod]+indnew)==0)
1167 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
1168 else
f66ae545 1169 continue;
b48af428 1170 TVector cluster(3),vecclust(9);
64ab0d55 1171 //vecclust(6)=vecclust(7)=vecclust(8)=-1.;
1172 Double_t sigma[2];
1173 // now vecclust is with cylindrical cohordinates
1174 vecclust(0)=(Float_t)fRecCylR[indexmod][indnew];
1175 vecclust(1)=(Float_t)fRecCylPhi[indexmod][indnew];
1176 vecclust(2)=(Float_t)fRecCylZ[indexmod][indnew];
b48af428 1177 vecclust(3) = (Float_t)recp->fTracks[0];
b48af428 1178 vecclust(4) = (Float_t)indnew;
64ab0d55 1179 vecclust(5) = (Float_t)indexmod;
b48af428 1180 vecclust(6) = (Float_t)recp->fTracks[0];
1181 vecclust(7) = (Float_t)recp->fTracks[1];
1182 vecclust(8) = (Float_t)recp->fTracks[2];
1183 sigma[0] = (Double_t) recp->GetSigmaX2();
1184 sigma[1] = (Double_t) recp->GetSigmaZ2();
64ab0d55 1185
1186 cluster(0)=fRecCylR[indexmod][indnew];
1187 cluster(1)=fRecCylPhi[indexmod][indnew];
1188 cluster(2)=fRecCylZ[indexmod][indnew];
1189
b48af428 1190 // cout<<" layer = "<<play<<"\n";
1191 // cout<<" cluster prima = "<<vecclust(0)<<" "
1192 // <<vecclust(1)<<" "
1193 // <<vecclust(2)<<"\n"; getchar();
1194
1195 Float_t sigmatotphi, sigmatotz;
1196 // Float_t epsphi=5.0, epsz=5.0;
1197 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
1198 Double_t rTrack=(*trackITS).Getrtrack();
1199 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
1200 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi +
1201 (*trackITS).GetSigmaphi());
1202 sigmatotz=epsz*TMath::Sqrt(sigma[1] +
1203 (*trackITS).GetSigmaZ());
1204 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)
1205 // <<" "<<cluster(1)<<" "<<sigmatotphi<<" "
1206 // <<vecclust(3)<<"\n";
1207 //if(vecclust(3)==481) getchar();
1208 if(cluster(1)<6. && (*trackITS).Getphi()>6.)
1209 cluster(1)=cluster(1)+(2.*TMath::Pi());
1210 if(cluster(1)>6. && (*trackITS).Getphi()<6.)
1211 cluster(1)=cluster(1)-(2.*TMath::Pi());
1212 if(TMath::Abs(cluster(1)-(*trackITS).Getphi())>sigmatotphi)
1213 continue;
1214 // cout<<" supero sigmaphi \n";
1215 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
def162f4 1216 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
b48af428 1217 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
1218 (*newTrack).Correct(Double_t(cluster(0)));
1219 //cout<<" cluster(2) e(*newTrack).GetZ()="<<cluster(2)<<" "
1220 // << (*newTrack).GetZ()<<"\n";
1221 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
1222 delete newTrack;
1223 continue;
1224 } // end if
1225 Double_t sigmanew[2];
1226 sigmanew[0]= sigmaphi;
1227 sigmanew[1]=sigma[1];
1228 Double_t m[2];
1229 m[0]=cluster(1);
1230 m[1]=cluster(2);
1231 // Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
1232 // cout<<" chi2pred = "<<chi2pred<<"\n";
1233 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
1234 if(iriv == 0) flaghit=1;
088e0b8d 1235 (*newTrack).AddMS(); // add the multiple scattering
b48af428 1236 //matrix to the covariance matrix
d0df5576 1237 (*newTrack).AddEL(1.,0);
b48af428 1238
b48af428 1239 if(fflagvert){
1240 KalmanFilterVert(newTrack,cluster,sigmanew);
1241 //KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
1242 }else{
1243 KalmanFilter(newTrack,cluster,sigmanew);
1244 } // end if
b48af428 1245 (*newTrack).PutCluster(layernew, vecclust);
1246 newTrack->AddClustInTrack();
1247 listoftrack.AddLast(newTrack);
1248 } // end for indnew
b48af428 1249 } // end of for on detectors (iriv)
1250 }//end if(outinters==0)
1251
1252 if(flaghit==0 || outinters==-2) {
1253 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
1254 (*newTrack).Setfnoclust();
def162f4 1255 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
088e0b8d 1256 (*newTrack).AddMS(); // add the multiple scattering matrix
b48af428 1257 // to the covariance matrix
d0df5576 1258 (*newTrack).AddEL(1.,0);
b48af428 1259 listoftrack.AddLast(newTrack);
1260 } // end if
1261
1262 //gObjectTable->Print(); // stampa memoria
04b80329 1263
b48af428 1264 RecursiveTracking(&listoftrack);
1265 listoftrack.Delete();
1266 } // end of for on tracks (index)
04b80329 1267
b48af428 1268 //gObjectTable->Print(); // stampa memoria
7d62fb64 1269 delete rl;
1270
13888096 1271}
b48af428 1272//______________________________________________________________________
1273Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track,Int_t layer,
1274 Int_t &ladder,Int_t &detector) {
1275 // Origin A. Badala' and G.S. Pappalardo
1276 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1277 // Found the intersection and the detector
1278
1279 Double_t rk=fAvrad[layer-1];
1280 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1281 track.Propagation(rk);
1282 Double_t zinters=track.GetZ();
1283 Double_t phinters=track.Getphi();
1284 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
1285
1286 TVector det(9);
1287 TVector listDet(2);
1288 TVector distZCenter(2);
1289
1290 Int_t iz=0;
1291 Int_t iD;
1292 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
1293 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1294 if(iz>1) {
1295 cout<< " Errore su iz in Intersection \n";
1296 getchar();
1297 }else {
1298 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2));
1299 iz++;
1300 } // end if
1301 } // end if
1302 } // end for iD
1303
1304 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1305 detector=Int_t (listDet(0));
1306 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
1307
1308 TVector listLad(2);
1309 TVector distPhiCenter(2);
1310 Int_t ip=0;
1311 Double_t pigre=TMath::Pi();
1312 Int_t iLd;
1313 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1314 Double_t phimin=fphimin[layer-1][iLd-1];
1315 Double_t phimax=fphimax[layer-1][iLd-1];
1316 Double_t phidet=fphidet[layer-1][iLd-1];
1317 Double_t phiconfr=phinters;
1318 if(phimin>phimax) {
1319 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n";
1320 // getchar();}
1321 phimin-=(2.*pigre);
1322 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1323 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
1324 } // end if
1325 if(phiconfr>phimin && phiconfr<= phimax) {
1326 if(ip>1) {
1327 cout<< " Errore su ip in Intersection \n"; getchar();
1328 }else {
1329 listLad(ip)= iLd;
1330 distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1331 } // end if
1332 } // end if
1333 } // end for iLd
1334 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1335 ladder=Int_t (listLad(0));
1336 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
1337 return 0;
1338}
1339//______________________________________________________________________
1340void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,
1341 Double_t sigma[2]){
1342 //Origin A. Badala' and G.S. Pappalardo:
1343 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1344 // Kalman filter without vertex constraint
1345 ////// Evaluation of the measurement vector ////////////////////////
1346 Double_t m[2];
1347 Double_t rk,phik,zk;
1348 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1349 m[0]=phik; m[1]=zk;
1350 //////////////////////// Evaluation of the error matrix V /////////
1351 Double_t v00=sigma[0];
1352 Double_t v11=sigma[1];
1353 ////////////////////////////////////////////////////////////////////
1354 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,
1355 cin32,cin42,cin33,cin43,cin44;
1356
1357 newTrack->GetCElements(cin00,
1358 cin10,cin11,
1359 cin20,cin21,cin22,
1360 cin30,cin31,cin32,cin33,
1361 cin40,cin41,cin42,cin43,cin44); //get C matrix
1362 Double_t rold00=cin00+v00;
1363 Double_t rold10=cin10;
1364 Double_t rold11=cin11+v11;
1365 ////////////////////// R matrix inversion /////////////////////////
1366 Double_t det=rold00*rold11-rold10*rold10;
1367 Double_t r00=rold11/det;
1368 Double_t r10=-rold10/det;
1369 Double_t r11=rold00/det;
1370 ////////////////////////////////////////////////////////////////////
1371 Double_t k00=cin00*r00+cin10*r10;
1372 Double_t k01=cin00*r10+cin10*r11;
1373 Double_t k10=cin10*r00+cin11*r10;
1374 Double_t k11=cin10*r10+cin11*r11;
1375 Double_t k20=cin20*r00+cin21*r10;
1376 Double_t k21=cin20*r10+cin21*r11;
1377 Double_t k30=cin30*r00+cin31*r10;
1378 Double_t k31=cin30*r10+cin31*r11;
1379 Double_t k40=cin40*r00+cin41*r10;
1380 Double_t k41=cin40*r10+cin41*r11;
1381 Double_t x0,x1,x2,x3,x4;
1382 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1383 Double_t savex0=x0, savex1=x1;
1384 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1385 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1386 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1387 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1388 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1389 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1390 c00=cin00-k00*cin00-k01*cin10;
1391 c10=cin10-k00*cin10-k01*cin11;
1392 c20=cin20-k00*cin20-k01*cin21;
1393 c30=cin30-k00*cin30-k01*cin31;
1394 c40=cin40-k00*cin40-k01*cin41;
1395 c11=cin11-k10*cin10-k11*cin11;
1396 c21=cin21-k10*cin20-k11*cin21;
1397 c31=cin31-k10*cin30-k11*cin31;
1398 c41=cin41-k10*cin40-k11*cin41;
1399 c22=cin22-k20*cin20-k21*cin21;
1400 c32=cin32-k20*cin30-k21*cin31;
1401 c42=cin42-k20*cin40-k21*cin41;
1402 c33=cin33-k30*cin30-k31*cin31;
1403 c43=cin43-k30*cin40-k31*cin41;
1404 c44=cin44-k40*cin40-k41*cin41;
1405 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1406 newTrack->PutCElements(c00,
1407 c10,c11,
1408 c20,c21,c22,
1409 c30,c31,c32,c33,
1410 c40,c41,c42,c43,c44); // put in track the
1411 // new cov matrix
1412 Double_t vmcold00=v00-c00;
1413 Double_t vmcold10=-c10;
1414 Double_t vmcold11=v11-c11;
1415 ////////////////////// Matrix vmc inversion ///////////////////////
1416 det=vmcold00*vmcold11-vmcold10*vmcold10;
1417 Double_t vmc00=vmcold11/det;
1418 Double_t vmc10=-vmcold10/det;
1419 Double_t vmc11=vmcold00/det;
1420 ////////////////////////////////////////////////////////////////////
1421 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1422 (m[1]-x1)*vmc11*(m[1]-x1);
04b80329 1423 newTrack->SetChi2(newTrack->GetChi2()+chi2);
b48af428 1424}
1425//----------------------------------------------------------------------
1426//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1427// TVector &cluster,Double_t sigma[2]){
1428void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1429 TVector &cluster,Double_t sigma[2]
1430 /*, Double_t chi2pred*/){
1431 //Origin A. Badala' and G.S. Pappalardo:
1432 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1433 // Kalman filter with vertex constraint
1434 ///////////////////// Evaluation of the measurement vector m ////////
1435 Double_t m[4];
1436 Double_t rk,phik,zk;
1437 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1438 m[0]=phik; m[1]=zk;
1439 Double_t cc=(*newTrack).GetC();
1440 Double_t zv=(*newTrack).GetZv();
1441 Double_t dv=(*newTrack).GetDv();
1442 Double_t cy=cc/2.;
1443 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1444 m[2]=dv; m[3]=tgl;
1445 /////////////////////// Evaluation of the error matrix V //////////
1446 Int_t layer=newTrack->GetLayer();
1447 Double_t v00=sigma[0];
1448 Double_t v11=sigma[1];
1449 Double_t v31=sigma[1]/rk;
1450 Double_t sigmaDv=newTrack->GetsigmaDv();
1451 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1452 Double_t v32=newTrack->Getdtgl(layer-1);
1453 Double_t sigmaZv=newTrack->GetsigmaZv();
1454 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+newTrack->Gettgl2(layer-1);
1455 //////////////////////////////////////////////////////////////////
1456 Double_t cin00,cin10,cin11,cin20,cin21,cin22,
1457 cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1458 newTrack->GetCElements(cin00,
1459 cin10,cin11,
1460 cin20,cin21,cin22,
1461 cin30,cin31,cin32,cin33,
1462 cin40,cin41,cin42,cin43,cin44); //get C matrix
1463 Double_t r[4][4];
1464 r[0][0]=cin00+v00;
1465 r[1][0]=cin10;
1466 r[2][0]=cin20;
1467 r[3][0]=cin30;
1468 r[1][1]=cin11+v11;
1469 r[2][1]=cin21;
1470 r[3][1]=cin31+sigma[1]/rk;
1471 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1472 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1473 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+
1474 newTrack->Gettgl2(layer-1);
1475 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0];
1476 r[1][2]=r[2][1]; r[1][3]=r[3][1]; r[2][3]=r[3][2];
1477 ///////////////////// Matrix R inversion //////////////////////////
1478 const Int_t kn=4;
1479 Double_t big, hold;
1480 Double_t d=1.;
1481 Int_t ll[kn],mm[kn];
1482 Int_t i,j,k;
1483
1484 for(k=0; k<kn; k++) {
1485 ll[k]=k;
1486 mm[k]=k;
1487 big=r[k][k];
1488 for(j=k; j<kn ; j++) {
1489 for (i=j; i<kn; i++) {
1490 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) {
1491 big=r[i][j];
1492 ll[k]=i;
1493 mm[k]=j;
1494 } // end if
1495 } // end for i
1496 } // end for j
1497 //
1498 j= ll[k];
1499 if(j > k) {
1500 for(i=0; i<kn; i++) {
1501 hold=-r[k][i];
1502 r[k][i]=r[j][i];
1503 r[j][i]=hold;
1504 } // end for i
1505 }// end if
1506 //
1507 i=mm[k];
1508 if(i > k ) {
1509 for(j=0; j<kn; j++) {
1510 hold=-r[j][k];
1511 r[j][k]=r[j][i];
1512 r[j][i]=hold;
1513 } // end for j
1514 } // end if
1515 //
1516 if(!big) {
1517 d=0.;
1518 cout << "Singular matrix\n";
1519 } // end if
1520 for(i=0; i<kn; i++) {
1521 if(i == k) { continue; }
1522 r[i][k]=r[i][k]/(-big);
1523 } // end for i
1524 //
1525 for(i=0; i<kn; i++) {
1526 hold=r[i][k];
1527 for(j=0; j<kn; j++) {
1528 if(i == k || j == k) continue;
1529 r[i][j]=hold*r[k][j]+r[i][j];
1530 } // end for j
1531 } // end of ri
1532 //
1533 for(j=0; j<kn; j++) {
1534 if(j == k) continue;
1535 r[k][j]=r[k][j]/big;
1536 } // end for j
1537 //
1538 d=d*big;
1539 //
1540 r[k][k]=1./big;
1541 } // end for k
1542 //
1543 for(k=kn-1; k>=0; k--) {
1544 i=ll[k];
1545 if(i > k) {
1546 for (j=0; j<kn; j++) {
1547 hold=r[j][k];
1548 r[j][k]=-r[j][i];
1549 r[j][i]=hold;
1550 } // end for j
1551 } // end if i
1552 j=mm[k];
1553 if(j > k) {
1554 for (i=0; i<kn; i++) {
1555 hold=r[k][i];
1556 r[k][i]=-r[j][i];
1557 r[j][i]=hold;
1558 } // end for i
1559 } // end if
1560 } // end for k
1561 ////////////////////////////////////////////////////////////////////
1562 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1563 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1564 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1565 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1566 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1567 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1568 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1569 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1570 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1571 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1572 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1573 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1574 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1575 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1576 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1577 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1578 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1579 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1580 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1581 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1582
1583 Double_t x0,x1,x2,x3,x4;
1584 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1585 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1586 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1587 k03*(m[3]-savex3);
1588 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1589 k13*(m[3]-savex3);
1590 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1591 k23*(m[3]-savex3);
1592 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1593 k33*(m[3]-savex3);
1594 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1595 k43*(m[3]-savex3);
1596 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1597 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1598 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1599 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1600 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1601 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1602 c11=cin11-k10*cin10-k11*cin11-k12*cin21-k13*cin31;
1603 c21=cin21-k10*cin20-k11*cin21-k12*cin22-k13*cin32;
1604 c31=cin31-k10*cin30-k11*cin31-k12*cin32-k13*cin33;
1605 c41=cin41-k10*cin40-k11*cin41-k12*cin42-k13*cin43;
1606 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1607 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1608 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1609 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1610 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1611 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1612
1613 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1614 newTrack->PutCElements(c00,
1615 c10,c11,
1616 c20,c21,c22,
1617 c30,c31,c32,c33,
1618 c40,c41,c42,c43,c44); // put in track the
1619 // new cov matrix
1620 Double_t vmc[4][4];
1621 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1622 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1623 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1624 vmc[3][3]=v33-c33;
1625 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1626 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1627 vmc[2][3]=vmc[3][2];
1628 /////////////////////// vmc matrix inversion ///////////////////////
1629 d=1.;
1630 for(k=0; k<kn; k++) {
1631 ll[k]=k;
1632 mm[k]=k;
1633 big=vmc[k][k];
1634 for(j=k; j<kn ; j++) {
1635 for (i=j; i<kn; i++) {
1636 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) {
1637 big=vmc[i][j];
1638 ll[k]=i;
1639 mm[k]=j;
1640 } // end if
1641 } // end for i
1642 } // end for j
1643 //
1644 j= ll[k];
1645 if(j > k) {
1646 for(i=0; i<kn; i++) {
1647 hold=-vmc[k][i];
1648 vmc[k][i]=vmc[j][i];
1649 vmc[j][i]=hold;
1650 } // end for i
1651 } // end if
1652 //
1653 i=mm[k];
1654 if(i > k ) {
1655 for(j=0; j<kn; j++) {
1656 hold=-vmc[j][k];
1657 vmc[j][k]=vmc[j][i];
1658 vmc[j][i]=hold;
1659 } // end for j
1660 } // end if
1661 //
1662 if(!big) {
1663 d=0.;
1664 cout << "Singular matrix\n";
1665 } // end if
1666 for(i=0; i<kn; i++) {
1667 if(i == k) continue;
1668 vmc[i][k]=vmc[i][k]/(-big);
1669 } // end for i
1670 //
1671 for(i=0; i<kn; i++) {
1672 hold=vmc[i][k];
1673 for(j=0; j<kn; j++) {
1674 if(i == k || j == k) continue;
1675 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1676 } // end for j
1677 } // end for i
1678 //
1679 for(j=0; j<kn; j++) {
1680 if(j == k) continue;
1681 vmc[k][j]=vmc[k][j]/big;
1682 } // end for j
1683 //
1684 d=d*big;
1685 //
1686 vmc[k][k]=1./big;
1687 } // end for k
1688 //
1689 for(k=kn-1; k>=0; k--) {
1690 i=ll[k];
1691 if(i > k) {
1692 for (j=0; j<kn; j++) {
1693 hold=vmc[j][k];
1694 vmc[j][k]=-vmc[j][i];
1695 vmc[j][i]=hold;
1696 } // end for j
1697 } // end if i>k
1698 j=mm[k];
1699 if(j > k) {
1700 for (i=0; i<kn; i++) {
1701 hold=vmc[k][i];
1702 vmc[k][i]=-vmc[j][i];
1703 vmc[j][i]=hold;
1704 } // end for i
1705 } // end if j>k
1706 } // end for k
1707 ////////////////////////////////////////////////////////////////////
1708 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1709 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) )+
1710 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1711 2.*vmc[3][1]*(m[3]-x3) ) +
1712 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
1713 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1714 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
1715 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1716 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
1717}
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