Fixed a bug in the Digit reader, moved clusterfinder to initialize from OCDB, Added...
[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;
7d62fb64 100 fresult = 0;
101 fPtref = 0.;
102 fChi2max =0.;
103 frecPoints = 0;
104 fvettid = 0;
105 fflagvert = flag;
106 frl = 0;
107 fzmin = 0;
108 fzmax = 0;
109 fphimin = 0;
110 fphimax = 0;
111 fphidet = 0;
64ab0d55 112
7d62fb64 113 Int_t imax = 200,jmax = 450;
114 frl = new AliITSRad(imax,jmax);
115
116 ////////// gets information on geometry /////////////////////////////
117 AliRunLoader* rl = AliRunLoader::Open("galice.root");
8e50d897 118 AliITSLoader* loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader");
119 if (!loader) {
120 Error("AliITSTrackerV1", "ITS loader not found");
121 return;
122 }
123 fDetTypeRec = new AliITSDetTypeRec(loader);
124 AliITSgeom* g1 = loader->GetITSgeom();
b48af428 125
7d62fb64 126 Int_t ll=1, dd=1;
127 TVector det(9);
128
129 Int_t ia;
130 for(ia=0; ia<6; ia++) {
131 fNlad[ia]=g1->GetNladders(ia+1);
132 fNdet[ia]=g1->GetNdetectors(ia+1);
133 //cout<<fNlad[i]<<" "<<fNdet[i]<<"\n";
134 } // end for ia
135
64ab0d55 136 //cout<<" mean radius = ";
7d62fb64 137 Int_t ib;
138 for(ib=0; ib<6; ib++) {
139 g1->GetCenterThetaPhi(ib+1,ll,dd,det);
140 Double_t r1=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
141 g1->GetCenterThetaPhi(ib+1,ll,dd+1,det);
142 Double_t r2=TMath::Sqrt(det(0)*det(0)+det(1)*det(1));
143 fAvrad[ib]=(r1+r2)/2.;
144 //cout<<fAvrad[ib]<<" ";
145 } // end for ib
b48af428 146 //cout<<"\n"; getchar();
7d62fb64 147
148 fDetx[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDx();
149 fDetz[0] = ((AliITSgeomSPD*)(g1->GetShape(1, ll, dd)))->GetDz();
150
151 fDetx[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDx();
152 fDetz[1] = ((AliITSgeomSPD*)(g1->GetShape(2, ll, dd)))->GetDz();
b48af428 153
154 fDetx[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDx();
155 fDetz[2] = ((AliITSgeomSDD*)(g1->GetShape(3, ll, dd)))->GetDz();
156
157 fDetx[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDx();
158 fDetz[3] = ((AliITSgeomSDD*)(g1->GetShape(4, ll, dd)))->GetDz();
159
160 fDetx[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDx();
161 fDetz[4] = ((AliITSgeomSSD*)(g1->GetShape(5, ll, dd)))->GetDz();
162
163 fDetx[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDx();
164 fDetz[5] = ((AliITSgeomSSD*)(g1->GetShape(6, ll, dd)))->GetDz();
165 //cout<<" Detx Detz\n";
166 //for(Int_t la=0; la<6; la++) cout<<" "<<fDetx[la]<<" "<<
167 // fDetz[la]<<endl;
168 //getchar();
64ab0d55 169
b48af428 170 // allocate memory and define matrices fzmin, fzmax, fphimin and fphimax //
171 Double_t epsz=1.2;
172 Double_t epszdrift=0.05;
173
174 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
175 Int_t im1, im2, im2max;
176 for(im1=0; im1<6; im1++) {
177 im2max=fNdet[im1];
178 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
179 } // end for im1
180
181 for(im1=0; im1<6; im1++) {
182 im2max=fNdet[im1];
183 for(im2=0; im2<im2max; im2++) {
184 g1->GetCenterThetaPhi(im1+1,1,im2+1,det);
185 if(im2!=0) fzmin[im1][im2]=det(2)-fDetz[im1];
186 else
187 fzmin[im1][im2]=det(2)-(fDetz[im1])*epsz;
188 if(im2!=(im2max-1)) fzmax[im1][im2]=det(2)+fDetz[im1];
189 else
cbcfa38d 190 fzmax[im1][im2]=det(2)+fDetz[im1]*epsz;
b48af428 191 if(im1==2 || im1==3) {
192 fzmin[im1][im2]-=epszdrift;
193 fzmax[im1][im2]+=epszdrift;
194 } // end if im1==2 || im1==3
195 } // end for im2
196 } // end for im1
13888096 197
b48af428 198 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
199 for(im1=0;im1<6;im1++) {
200 im2max=fNlad[im1];
201 fphimin[im1] = new Double_t[im2max];
202 fphimax[im1] = new Double_t[im2max];
203 } // end for im1
204
205 fphidet = new Double_t*[6];
206 for(im1=0; im1<6; im1++) {
207 im2max=fNlad[im1];
208 fphidet[im1] = new Double_t[im2max];
209 } // end for im1
210
def162f4 211 Double_t global[3],local[3];
b48af428 212 Double_t pigre=TMath::Pi();
213 Double_t xmin,ymin,xmax,ymax;
214
215 for(im1=0; im1<6; im1++) {
216 im2max=fNlad[im1];
217 for(im2=0; im2<im2max; im2++) {
218 Int_t idet=2;
219 g1->GetCenterThetaPhi(im1+1,im2+1,idet,det);
220 fphidet[im1][im2] = TMath::ATan2(Double_t(det(1)),
221 Double_t(det(0)));
222 if(fphidet[im1][im2]<0.) fphidet[im1][im2]+=2.*pigre;
223 local[1]=local[2]=0.;
224 local[0]= -(fDetx[im1]);
225 if(im1==0) local[0]= (fDetx[im1]); //to take into account
226 // different reference system
227 g1->LtoG(im1+1,im2+1,idet,local,global);
228 xmax=global[0]; ymax=global[1];
229 local[0]= (fDetx[im1]);
230 if(im1==0) local[0]= -(fDetx[im1]);//take into account different
231 // reference system
232 g1->LtoG(im1+1,im2+1,idet,local,global);
233 xmin=global[0]; ymin=global[1];
234 fphimin[im1][im2]= TMath::ATan2(ymin,xmin);
235 if(fphimin[im1][im2]<0.) fphimin[im1][im2]+=2.*pigre;
236 fphimax[im1][im2]= TMath::ATan2(ymax,xmax);
237 if(fphimax[im1][im2]<0.) fphimax[im1][im2]+=2.*pigre;
238 } // end for im2
239 } // end for im1
64ab0d55 240//////////////////////////////////////////////////////////////////////////////////////////////////////////
241/////////////// allocate memory and define vector fNRecPoints and matrices fRecCylR, fRecCylPhi, fRecCylZ /////////////
242 gAlice->GetEvent(evnumber);
e869281d 243 Int_t numOfModules = g1->GetIndexMax();
244 fRecCylR = new Double_t *[numOfModules];
245 fRecCylPhi = new Double_t *[numOfModules];
246 fRecCylZ = new Double_t *[numOfModules];
64ab0d55 247 AliITSRecPoint *recp;
e869281d 248 fNRecPoints = new Int_t[numOfModules];
64ab0d55 249
e869281d 250 for(Int_t module=0; module<numOfModules; module++) {
7d62fb64 251 fDetTypeRec->ResetRecPoints();
252 gAlice->TreeR()->GetEvent(module);
253 frecPoints=fDetTypeRec->RecPoints();
64ab0d55 254 Int_t nRecPoints=fNRecPoints[module]=frecPoints->GetEntries();
64ab0d55 255 fRecCylR[module] = new Double_t[nRecPoints];
256 fRecCylPhi[module] = new Double_t[nRecPoints];
257 fRecCylZ[module] = new Double_t[nRecPoints];
258 Int_t ind;
259 for(ind=0; ind<fNRecPoints[module]; ind++) {
260 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(ind);
261 // Float_t global[3], local[3];
262 Double_t global[3], local[3];
263 local[0]=recp->GetX();
264 local[1]=0.;
265 local[2]= recp->GetZ();
266 g1->LtoG(module,local,global);
64ab0d55 267
268 Double_t r = TMath::Sqrt(global[0]*global[0]+global[1]*global[1]); // r hit
269 Double_t phi = TMath::ATan2(global[1],global[0]); if(phi<0.) phi+=2.*TMath::Pi(); // phi hit
def162f4 270 Double_t z = global[2]; // z hit
64ab0d55 271
272 fRecCylR[module][ind]=r;
273 fRecCylPhi[module][ind]=phi;
274 fRecCylZ[module][ind]=z;
275 }
276 }
277 //}
278 //}
279////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
280
b48af428 281
282 ////////// gets magnetic field factor //////////////////////////////
f7a1cc68 283 AliMagF * fieldPointer = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
284 fFieldFactor = fieldPointer ? fieldPointer->SolenoidField()/10/.2 : 0;
af50998a 285 // cout<< " field factor = "<<fFieldFactor<<"\n"; getchar();
7d62fb64 286 delete rl;
287
b48af428 288}
289//______________________________________________________________________
d0df5576 290AliITSTrackerV1::AliITSTrackerV1(const AliITSTrackerV1 &cobj) : TObject(cobj) {
b48af428 291 // Origin A. Badala' and G.S. Pappalardo:
292 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
293 // copy constructor
64ab0d55 294
7d62fb64 295 // *fITS = *cobj.fITS;
b48af428 296 *fresult = *cobj.fresult;
297 fPtref = cobj.fPtref;
298 fChi2max = cobj.fChi2max;
299 **fvettid = **cobj.fvettid;
300 fflagvert = cobj.fflagvert;
301 Int_t imax=200,jmax=450;
302 frl = new AliITSRad(imax,jmax);
303 *frl = *cobj.frl;
304 fFieldFactor = cobj.fFieldFactor;
305 Int_t i,im1,im2,im2max;
306 for(i=0; i<6; i++) {
307 fNlad[i] = cobj.fNlad[i];
308 fNdet[i] = cobj.fNdet[i];
309 fAvrad[i] = cobj.fAvrad[i];
310 fDetx[i] = cobj.fDetx[i];
311 fDetz[i] = cobj.fDetz[i];
312 } // end or i
313 fzmin = new Double_t*[6]; fzmax = new Double_t*[6];
314 for(im1=0; im1<6; im1++) {
315 im2max=fNdet[im1];
316 fzmin[im1] = new Double_t[im2max];
317 fzmax[im1] = new Double_t[im2max];
318 } // end for im1
cbcfa38d 319 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 320 for(im1=0;im1<6;im1++) {
321 im2max=fNlad[im1];
322 fphimin[im1] = new Double_t[im2max];
323 fphimax[im1] = new Double_t[im2max];
324 } // end for im1
325
326 fphidet = new Double_t*[6];
327 for(im1=0; im1<6; im1++) {
328 im2max=fNlad[im1];
329 fphidet[im1] = new Double_t[im2max];
330 } // end for im1
331 for(im1=0; im1<6; im1++) {
332 im2max=fNdet[im1];
333 for(im2=0; im2<im2max; im2++) {
334 fzmin[im1][im2]=cobj.fzmin[im1][im2];
335 fzmax[im1][im2]=cobj.fzmax[im1][im2];
336 } // end for im2
337 } // end for im1
338 for(im1=0; im1<6; im1++) {
339 im2max=fNlad[im1];
340 for(im2=0; im2<im2max; im2++) {
341 fphimin[im1][im2]=cobj.fphimin[im1][im2];
342 fphimax[im1][im2]=cobj.fphimax[im1][im2];
343 fphidet[im1][im2]=cobj.fphidet[im1][im2];
344 } // end for im2
345 } // end for im2
64ab0d55 346
347
7d62fb64 348 AliRunLoader* rl = AliRunLoader::Open("galice.root");
349 rl->CdGAFile();
350 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
351
e869281d 352 Int_t numOfModules = g1->GetIndexMax();
64ab0d55 353 /*
e869281d 354 fRecCylR = new Float_t *[numOfModules];
355 fRecCylPhi = new Float_t *[numOfModules];
356 fRecCylZ = new Float_t *[numOfModules];
64ab0d55 357 */
e869281d 358 fRecCylR = new Double_t *[numOfModules];
359 fRecCylPhi = new Double_t *[numOfModules];
360 fRecCylZ = new Double_t *[numOfModules];
361 fNRecPoints = new Int_t[numOfModules];
362 for(Int_t module=0; module<numOfModules; module++) {
64ab0d55 363 Int_t nRecPoints=fNRecPoints[module]=cobj.fNRecPoints[module];
364 /*
365 fRecCylR[module] = new Float_t[nRecPoints];
366 fRecCylPhi[module] = new Float_t[nRecPoints];
367 fRecCylZ[module] = new Float_t[nRecPoints];
368 */
369 fRecCylR[module] = new Double_t[nRecPoints];
370 fRecCylPhi[module] = new Double_t[nRecPoints];
371 fRecCylZ[module] = new Double_t[nRecPoints];
372 Int_t ind;
373 for(ind=0; ind<nRecPoints; ind++) {
374 fRecCylR[module][ind]=cobj.fRecCylR[module][ind];
375 fRecCylPhi[module][ind]=cobj.fRecCylPhi[module][ind];
376 fRecCylZ[module][ind]=cobj.fRecCylZ[module][ind];
377 }
378 }
7d62fb64 379 delete rl;
64ab0d55 380
381}
e869281d 382/*
383//______________________________________________________________________
384void AliITSTrackerV1::DelMatrix(Int_t numOfModules) {
385 // cleanup of some data members
386 for(Int_t mod=0; mod<numOfModules; mod++) {
64ab0d55 387 delete fRecCylR[mod];
388 delete fRecCylPhi[mod];
389 delete fRecCylZ[mod];
390 }
391 delete fRecCylR;
392 delete fRecCylPhi;
393 delete fRecCylZ;
cbcfa38d 394}
e869281d 395*/
b48af428 396//______________________________________________________________________
cbcfa38d 397AliITSTrackerV1::~AliITSTrackerV1(){
b48af428 398 // Origin A. Badala' and G.S. Pappalardo:
399 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
64ab0d55 400 // class destructor
401 delete frl;
402 delete fNRecPoints;
403 for(Int_t i=0; i<6; i++) {
404 delete fzmin[i];
405 delete fzmax[i];
406 delete fphimin[i];
407 delete fphimax[i];
408 delete fphidet[i];
409 }
410
411 delete fzmin;
412 delete fzmax;
413 delete fphimin;
414 delete fphimax;
415 delete fphidet;
416
13888096 417}
b48af428 418//______________________________________________________________________
e869281d 419AliITSTrackerV1 &AliITSTrackerV1::operator=(const AliITSTrackerV1 &obj) {
b48af428 420 // Origin A. Badala' and G.S. Pappalardo:
421 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
422 // assignement operator
423
7d62fb64 424 // *fITS = *obj.fITS;
b48af428 425 *fresult = *obj.fresult;
426 fPtref = obj.fPtref;
427 fChi2max = obj.fChi2max;
428 **fvettid = **obj.fvettid;
429 fflagvert = obj.fflagvert;
430 Int_t imax=200,jmax=450;
431 frl = new AliITSRad(imax,jmax);
432 *frl = *obj.frl;
433 fFieldFactor = obj.fFieldFactor;
434 Int_t i;
435 for(i=0; i<6; i++) {
436 fNlad[i] = obj.fNlad[i];
437 fNdet[i] = obj.fNdet[i];
438 fAvrad[i] = obj.fAvrad[i];
439 fDetx[i] = obj.fDetx[i];
440 fDetz[i] = obj.fDetz[i];
441 } // end for i
442 fzmin = new Double_t*[6];
443 fzmax = new Double_t*[6];
444 Int_t im1, im2, im2max;
445 for(im1=0; im1<6; im1++) {
446 im2max=fNdet[im1];
447 fzmin[im1] = new Double_t[im2max]; fzmax[im1] = new Double_t[im2max];
448 } // end for im1
cbcfa38d 449 fphimin = new Double_t*[6]; fphimax = new Double_t*[6];
b48af428 450 for(im1=0;im1<6;im1++) {
451 im2max=fNlad[im1];
452 fphimin[im1] = new Double_t[im2max];
453 fphimax[im1] = new Double_t[im2max];
454 } // end for im1
455
456 fphidet = new Double_t*[6];
457 for(im1=0; im1<6; im1++) {
458 im2max=fNlad[im1];
459 fphidet[im1] = new Double_t[im2max];
460 } // end for im1
461 for(im1=0; im1<6; im1++) {
462 im2max=fNdet[im1];
463 for(im2=0; im2<im2max; im2++) {
464 fzmin[im1][im2]=obj.fzmin[im1][im2];
465 fzmax[im1][im2]=obj.fzmax[im1][im2];
466 } // end for im2
467 } // end for im1
468 for(im1=0; im1<6; im1++) {
469 im2max=fNlad[im1];
470 for(im2=0; im2<im2max; im2++) {
471 fphimin[im1][im2]=obj.fphimin[im1][im2];
472 fphimax[im1][im2]=obj.fphimax[im1][im2];
473 fphidet[im1][im2]=obj.fphidet[im1][im2];
474 } // end for im2
475 } // end for im1
476
7d62fb64 477 AliRunLoader* rl = AliRunLoader::Open("galice.root");
478 rl->CdGAFile();
479 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
480 // AliITSgeom *g1 = fITS->GetITSgeom();
e869281d 481 Int_t numOfModules = g1->GetIndexMax();
482 fRecCylR = new Double_t *[numOfModules];
483 fRecCylPhi = new Double_t *[numOfModules];
484 fRecCylZ = new Double_t *[numOfModules];
485 fNRecPoints = new Int_t[numOfModules];
486 for(Int_t module=0; module<numOfModules; module++) {
64ab0d55 487 Int_t nRecPoints=fNRecPoints[module]=obj.fNRecPoints[module];
64ab0d55 488 fRecCylR[module] = new Double_t[nRecPoints];
489 fRecCylPhi[module] = new Double_t[nRecPoints];
490 fRecCylZ[module] = new Double_t[nRecPoints];
491 Int_t ind;
492 for(ind=0; ind<nRecPoints; ind++) {
493 fRecCylR[module][ind]=obj.fRecCylR[module][ind];
494 fRecCylPhi[module][ind]=obj.fRecCylPhi[module][ind];
495 fRecCylZ[module][ind]=obj.fRecCylZ[module][ind];
496 }
497 }
498
499
7d62fb64 500 delete rl;
b48af428 501 return *this;
04b80329 502}
b48af428 503//______________________________________________________________________
504void AliITSTrackerV1::DoTracking(Int_t evNumber,Int_t minTr,Int_t maxTr,
61231d74 505 TFile *file, Bool_t realmass) {
b48af428 506 // Origin A. Badala' and G.S. Pappalardo:
507 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
508 // The method needs the event number, the minimum and maximum order
509 // number of TPC tracks that
510 // are to be tracked trough the ITS, and the file where the recpoints
511 // are registered.
512 // The method can be called by a macro. It preforms the tracking for
513 // all good TPC tracks
514
e81f4d4f 515 printf("begin DoTracking - file %p\n",(void*)file);
b48af428 516
517 gAlice->GetEvent(evNumber); //modificato per gestire hbt
13888096 518
b48af428 519 TFile *cf=TFile::Open("AliTPCclusters.root");
9040b789 520 AliTPCParam *digp= (AliTPCParam*)cf->Get("75x40_100x60_150x60");
b48af428 521 if (!digp) { cerr<<"TPC parameters have not been found !\n"; getchar();}
522
523 cf->cd();
7d62fb64 524 AliRunLoader* rl = AliRunLoader::Open("galice.root");
525 AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
526 TString foldname(itsl->GetEventFolder()->GetName());
527 //TString foldname(fITS->GetLoader()->GetEventFolder()->GetName());
528 delete rl;
c630aafd 529 printf("This method is not converted to the NewIO !\n"); //I.B.
530 return; //I.B.
531 AliTPCtracker *tracker = new AliTPCtracker(digp); //I.B.
88cb7938 532 //PH tracker->SetEventNumber(evNumber); //I.B.
b48af428 533
534 // Load clusters
c630aafd 535 printf("This method is not converted to the NewIO !\n"); //I.B.
536 return; //I.B.
537 tracker->LoadClusters(0); //I.B.
b48af428 538
539 // Load tracks
64ab0d55 540 TFile *tf=TFile::Open("AliTPCtracksSorted.root");
b48af428 541 if (!tf->IsOpen()) {
542 cerr<<"Can't open AliTPCtracksSorted.root !\n";
543 return ;
544 } // end if
545 TObjArray tracks(200000);
546 char tname[100];
547 sprintf(tname,"TreeT_TPC_%d",evNumber);
548
549 TTree *tracktree=(TTree*)tf->Get(tname);
550 if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n";}
551 TBranch *tbranch=tracktree->GetBranch("tracks");
552 Int_t nentr=(Int_t)tracktree->GetEntries();
553 Int_t kk;
554
def162f4 555 AliITSRecPoint *recp; // oggi
556 AliTPCtrack *ioTrackTPC=0;
b48af428 557 for (kk=0; kk<nentr; kk++) {
558 ioTrackTPC=new AliTPCtrack;
559 tbranch->SetAddress(&ioTrackTPC);
560 tracktree->GetEvent(kk);
561 tracker->CookLabel(ioTrackTPC,0.1);
562 tracks.AddLast(ioTrackTPC);
563 } // end for kk
564 delete tracker;
565 tf->Close();
566
567 Int_t nt = tracks.GetEntriesFast();
568 cerr<<"Number of found tracks "<<nt<<endl;
569
570 TVector vec(5);
571 TTree *tr=gAlice->TreeR();
572 Int_t nent=(Int_t)tr->GetEntries();
7d62fb64 573 frecPoints = fDetTypeRec->RecPoints();
b48af428 574
575 Int_t numbpoints;
576 Int_t totalpoints=0;
577 Int_t *np = new Int_t[nent];
578 fvettid = new Int_t* [nent];
579 Int_t mod;
580
581 for (mod=0; mod<nent; mod++) {
582 fvettid[mod]=0;
7d62fb64 583 fDetTypeRec->ResetRecPoints();
b48af428 584 gAlice->TreeR()->GetEvent(mod);
585 numbpoints = frecPoints->GetEntries();
586 totalpoints+=numbpoints;
587 np[mod] = numbpoints;
588 //cout<<" mod = "<<mod<<" numbpoints = "<<numbpoints<<"\n";getchar();
589 fvettid[mod] = new Int_t[numbpoints];
590 Int_t ii;
591 for (ii=0;ii<numbpoints; ii++) *(fvettid[mod]+ii)=0;
592 } // end for mod
593
594 AliTPCtrack *track=0;
595
596 if(minTr < 0) {minTr = 0; maxTr = nt-1;}
597
598 TVector vgeant(3);
599
600 TTree tracktree1("TreeT","Tree with ITS tracks");
601 AliITSIOTrack *ioTrack=0;
def162f4 602 AliITSPid *pid=new AliITSPid(1000); // oggi
603
b48af428 604 tracktree1.Branch("ITStracks","AliITSIOTrack",&ioTrack,32000,0);
605
def162f4 606 TDatabasePDG * db = new TDatabasePDG;
61231d74 607
b48af428 608 Int_t j;
609 for (j=minTr; j<=maxTr; j++) {
610 track=(AliTPCtrack*)tracks.UncheckedAt(j);
611 if (!track) continue;
61231d74 612
613 /// mass definition ////////////////////////
614 Double_t mass=0.13956995;
615 Int_t pcode=211; // a pion by default
def162f4 616
61231d74 617 if(realmass) {
def162f4 618 if(TMath::Abs(pcode)<20443) mass=db->GetParticle(pcode)->Mass();
61231d74 619 }
def162f4 620 else {
621 mass = track->GetMass();
e286bade 622// cout << "Mass = " << mass << endl;
def162f4 623 }
624
61231d74 625
626
d3ab000e 627 // new propagation to the end of TPC
64ab0d55 628 Double_t xk=80.;
629 // track->PropagateTo(xk,0.,0.); //Ne if it's still there //attenzione funziona solo se modifica in TPC
630 // Double_t xk=77.415;
d3ab000e 631 track->PropagateTo(xk, 28.94, 1.204e-3);
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-=2.0;
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
643 xk=61.;
64ab0d55 644 // track->PropagateTo(xk,0.,0.); //C02
645 track->PropagateTo(xk,36.2,1.98e-3); //C02 //attenzione funziona solo se modifica in TPC
d3ab000e 646
647 xk -=0.005;
648 track->PropagateTo(xk, 24.01, 2.7); //Al
649 xk -=0.005;
650 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
651 xk -=0.02;
652 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
653 xk -=0.5;
654 track->PropagateTo(xk, 41.28, 0.029); //Nomex
655 xk -=0.02;
656 track->PropagateTo(xk, 44.86, 1.45); //Kevlar
657 xk -=0.005;
658 track->PropagateTo(xk, 44.77, 1.71); //Tedlar
659 xk -=0.005;
64ab0d55 660 track->PropagateTo(xk, 24.01, 2.7); //Al
af50998a 661
64ab0d55 662 ////////////////////////////////////////////////////////////////////////////////////////////////////////
af50998a 663 //AliITSTrackV1 trackITS(*track);
664 AliITSTrackV1 trackITS(*track, fFieldFactor);
665 //cout<<" fFieldFactor = "<<fFieldFactor<<"\n";
61231d74 666 trackITS.PutMass(mass); //new to add mass to track
b48af428 667 if(fresult){ delete fresult; fresult=0;}
668 fresult = new AliITSTrackV1(trackITS);
669
670 AliITSTrackV1 primaryTrack(trackITS);
671 vgeant=(*fresult).GetVertex();
672
673 // Definition of dv and zv for vertex constraint
674 Double_t sigmaDv=0.0050; Double_t sigmaZv=0.010;
675 //Double_t sigmaDv=0.0015; Double_t sigmaZv=0.0015;
13888096 676 Double_t uniform= gRandom->Uniform();
677 Double_t signdv;
678 if(uniform<=0.5) signdv=-1.;
b48af428 679 else
680 signdv=1.;
681
04b80329 682 Double_t vr=TMath::Sqrt(vgeant(0)*vgeant(0)+ vgeant(1)*vgeant(1));
b48af428 683 Double_t dv=gRandom->Gaus(signdv*vr,(Float_t)sigmaDv);
684 Double_t zv=gRandom->Gaus(vgeant(2),(Float_t)sigmaZv);
685 //cout<<" Dv e Zv = "<<dv<<" "<<zv<<"\n";
686 trackITS.SetDv(dv);
687 trackITS.SetZv(zv);
688 trackITS.SetsigmaDv(sigmaDv);
689 trackITS.SetsigmaZv(sigmaZv);
690 (*fresult).SetDv(dv);
691 (*fresult).SetZv(zv);
692 (*fresult).SetsigmaDv(sigmaDv);
693 (*fresult).SetsigmaZv(sigmaZv);
694 primaryTrack.SetDv(dv);
695 primaryTrack.SetZv(zv);
696 primaryTrack.SetsigmaDv(sigmaDv);
697 primaryTrack.SetsigmaZv(sigmaZv);
088e0b8d 698 primaryTrack.PrimaryTrack();
b48af428 699 TVector d2=primaryTrack.Getd2();
700 TVector tgl2=primaryTrack.Gettgl2();
701 TVector dtgl=primaryTrack.Getdtgl();
702 trackITS.Setd2(d2); trackITS.Settgl2(tgl2);
703 trackITS.Setdtgl(dtgl);
704 (*fresult).Setd2(d2); (*fresult).Settgl2(tgl2);
705 (*fresult).Setdtgl(dtgl);
706 /*
707 trackITS.SetVertex(vertex); trackITS.SetErrorVertex(ervertex);
708 (*result).SetVertex(vertex); (*result).SetErrorVertex(ervertex);
709 */
710 TList *list= new TList();
711
712 list->AddLast(&trackITS);
713
714 fPtref=TMath::Abs( (trackITS).GetPt() );
af50998a 715 //cout<<" fPtref = " <<fPtref<<"\n";
b48af428 716 if(fPtref>1.0) fChi2max=40.;
717 if(fPtref<=1.0) fChi2max=20.;
718 if(fPtref<0.4 ) fChi2max=100.;
719 if(fPtref<0.2 ) fChi2max=40.;
720 // if(fPtref<0.4 ) fChi2max=30.;
721 // if(fPtref<0.2 ) fChi2max=20.;
722 //if(fPtref<0.2 ) fChi2max=10.;
723 //if(fPtref<0.1 ) fChi2max=5.;
c57de405 724 //cout << "\n Pt = " << fPtref <<"\n"; //stampa
b48af428 725 RecursiveTracking(list);
726 list->Delete();
727 delete list;
728
729 Int_t itot=-1;
730 TVector vecTotLabRef(18);
731 Int_t lay, k;
732 for(lay=5; lay>=0; lay--) {
733 TVector vecLabRef(3);
734 vecLabRef=(*fresult).GetLabTrack(lay);
735 Float_t clustZ=(*fresult).GetZclusterTrack( lay);
736 for(k=0; k<3; k++){
04b80329 737 Int_t lpp=(Int_t)vecLabRef(k);
738 if(lpp>=0) {
5d12ce38 739 TParticle *p=(TParticle*) gAlice->GetMCApp()->Particle(lpp);
b48af428 740 Int_t pcode=p->GetPdgCode();
741 if(pcode==11) vecLabRef(k)=p->GetFirstMother();
742 } // end if
743 itot++; vecTotLabRef(itot)=vecLabRef(k);
64ab0d55 744 if(vecLabRef(k)==0. && clustZ == -1.) vecTotLabRef(itot) =-3.;
b48af428 745 } // end for k
746 } // end for lay
747 Long_t labref;
748 Int_t freq;
749 (*fresult).Search(vecTotLabRef, labref, freq);
750
751 //if(freq < 6) labref=-labref; // cinque - sei
752 if(freq < 5) labref=-labref; // cinque - sei
753 (*fresult).SetLabel(labref);
754
755 // cout<<" progressive track number = "<<j<<"\r";
756 // cout<<j<<"\r";
757 Int_t numOfCluster=(*fresult).GetNumClust();
c57de405 758 //cout<<" progressive track number = "<<j<<"\n"; // stampa
b48af428 759 Long_t labITS=(*fresult).GetLabel();
c57de405 760 //cout << " ITS track label = " << labITS << "\n"; // stampa
b48af428 761 Int_t lab=track->GetLabel();
c57de405 762 //cout << " TPC track label = " << lab <<"\n"; // stampa
b48af428 763 //propagation to vertex
764
765 Double_t rbeam=3.;
def162f4 766 if((*fresult).DoNotCross(rbeam)) continue; //no intersection with beampipe
b48af428 767 (*fresult).Propagation(rbeam);
768 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
769 (*fresult).GetCElements(c00,
770 c10,c11,
771 c20,c21,c22,
772 c30,c31,c32,c33,
773 c40,c41,c42,c43,c44);
13888096 774
b48af428 775 Double_t pt=TMath::Abs((*fresult).GetPt());
776 Double_t dr=(*fresult).GetD();
777 Double_t z=(*fresult).GetZ();
778 Double_t tgl=(*fresult).GetTgl();
779 Double_t c=(*fresult).GetC();
780 Double_t cy=c/2.;
781 Double_t dz=z-(tgl/cy)*TMath::ASin((*fresult).Arga(rbeam));
782 dz-=vgeant(2);
783 // cout<<" dr e dz alla fine = "<<dr<<" "<<dz<<"\n"; getchar();
784 Double_t phi=(*fresult).Getphi();
785 Double_t phivertex = phi - TMath::ASin((*fresult).ArgA(rbeam));
786 Double_t duepi=2.*TMath::Pi();
787 if(phivertex>duepi) phivertex-=duepi;
788 if(phivertex<0.) phivertex+=duepi;
789 /////////////////////////////////////////////////////////////
790 Int_t idmodule,idpoint;
791 if(numOfCluster >=5) { // cinque - sei
792 //if(numOfCluster ==6) { // cinque - sei
793 AliITSIOTrack outTrack;
794 ioTrack=&outTrack;
795 ioTrack->SetStatePhi(phi);
796 ioTrack->SetStateZ(z);
797 ioTrack->SetStateD(dr);
798 ioTrack->SetStateTgl(tgl);
799 ioTrack->SetStateC(c);
800 Double_t radius=(*fresult).Getrtrack();
801 ioTrack->SetRadius(radius);
802 Int_t charge;
803 if(c>0.) charge=-1; else charge=1;
804 ioTrack->SetCharge(charge);
def162f4 805 Double_t trackmass=(*fresult).GetMass(); // oggi
806 ioTrack->SetMass(trackmass); // oggi
b48af428 807 ioTrack->SetCovMatrix(c00,
808 c10,c11,
809 c20,c21,c22,
810 c30,c31,c32,c33,
811 c40,c41,c42,c43,c44);
812 Double_t px=pt*TMath::Cos(phivertex);
813 Double_t py=pt*TMath::Sin(phivertex);
814 Double_t pz=pt*tgl;
815 Double_t xtrack=dr*TMath::Sin(phivertex);
816 Double_t ytrack=dr*TMath::Cos(phivertex);
817 Double_t ztrack=dz+vgeant(2);
818 ioTrack->SetPx(px);
819 ioTrack->SetPy(py);
820 ioTrack->SetPz(pz);
821 ioTrack->SetX(xtrack);
822 ioTrack->SetY(ytrack);
823 ioTrack->SetZ(ztrack);
824 ioTrack->SetLabel(labITS);
825 ioTrack->SetTPCLabel(lab);
61231d74 826 ioTrack->SetDz(dz);
b48af428 827 Int_t il;
def162f4 828 /*
829 for(il=0;il<6; il++){
b48af428 830 ioTrack->SetIdPoint(il,(*fresult).GetIdPoint(il));
831 ioTrack->SetIdModule(il,(*fresult).GetIdModule(il));
832 } // end for il
def162f4 833 */
834 //tracktree1.Fill();
835 Float_t q[4]={-1.,-1.,-1.,-1.};
836 Float_t globaldedx=0.;
b48af428 837 for (il=0;il<6;il++) {
838 idpoint=(*fresult).GetIdPoint(il);
839 idmodule=(*fresult).GetIdModule(il);
61231d74 840 if(idmodule>0.) *(fvettid[idmodule]+idpoint)=1;
841
b48af428 842 ioTrack->SetIdPoint(il,idpoint);
843 ioTrack->SetIdModule(il,idmodule);
def162f4 844 //// for q definition
845 if(il>1){
846 if(idmodule>0.){
7d62fb64 847 fDetTypeRec->ResetRecPoints();
def162f4 848 gAlice->TreeR()->GetEvent(idmodule);
849 recp=(AliITSRecPoint*)frecPoints->UncheckedAt(idpoint);
850 q[il-2]=recp->GetQ()*(*fresult).Getfcor(il-2);
851 }
852 }
853 } // end for il
854 q[0]/=280.; q[1]/=280.;
855 q[2]/=38.; q[3]/=38.;
856
857 // cout<<" q prima = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
858
859 Int_t swap;
860 do{
861 swap=0;
862 for (il=0; il<3; il++) {
863 if (q[il]<=q[il+1]) continue;
864 Float_t tmp=q[il];
865 q[il]=q[il+1]; q[il+1]=tmp;
866 swap++;
867 }
868 } while(swap);
869
870
871 // cout<<" q dopo = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
872
873 if(q[0]<0.) {
874 q[0]=q[1];
875 q[1]=q[2];
876 q[2]=q[3];
877 q[3]=-1.;
878 }
879
880 // cout<<" q dopo if = "<<q[0]<<" "<<q[1]<<" "<<q[2]<<" "<<q[3]<<"\n"; getchar();
881
882 globaldedx=(q[0]+q[1])/2.;
883
884 // if(q[3]> 0.) globaldedx=(q[0]+q[1]+q[2]+q[3])/4.;
885 // else globaldedx=(q[0]+q[1]+q[2])/3.;
886
887 ioTrack->SetdEdx(globaldedx);
888 ioTrack->SetPid(pid->GetPcode(ioTrack));
889
890 tracktree1.Fill();
b48af428 891 } // end if on numOfCluster
892 //gObjectTable->Print(); // stampa memoria
893 } // end for (int j=minTr; j<=maxTr; j++)
61231d74 894 delete db;
b48af428 895 static Bool_t first=kTRUE;
896 static TFile *tfile;
897 if(first) {
898 tfile=new TFile("itstracks.root","RECREATE");
899 //cout<<"I have opened itstracks.root file "<<endl;
900 } // end if
901 first=kFALSE;
902 tfile->cd();
903 tfile->ls();
904 char hname[30];
905 sprintf(hname,"TreeT%d",evNumber);
def162f4 906 cout << "Number of saved ITS tracks " << tracktree1.GetEntries() << endl;
b48af428 907 tracktree1.Write(hname);
908
909 TTree *fAli=gAlice->TreeK();
910 TFile *fileAli=0;
911 if (fAli) fileAli =fAli->GetCurrentFile();
912 fileAli->cd();
913 ////////////////////////////////////////////////////////////////////
914
915 printf("delete vectors\n");
916 if(np) delete [] np;
917 if(fvettid) delete [] fvettid;
918 if(fresult) {delete fresult; fresult=0;}
04b80329 919}
b48af428 920//______________________________________________________________________
04b80329 921void AliITSTrackerV1::RecursiveTracking(TList *trackITSlist) {
b48af428 922 // This function perform the recursive tracking in ITS detectors
923 // reference is a pointer to the final best track
924 // Origin A. Badala' and G.S. Pappalardo:
925 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
926 // The authors thank Mariana Bondila to have help them to resolve some
927 // problems. July-2000
928
929 //Rlayer[0]=4.; Rlayer[1]=7.; Rlayer[2]=14.9;
930 // Rlayer[3]=23.8; Rlayer[4]=39.1; Rlayer[5]=43.6; //vecchio
931
932 //////////////////////
933 Float_t sigmaphil[6], sigmazl[6];
934 sigmaphil[0]=1.44e-6/(fAvrad[0]*fAvrad[0]);
935 sigmaphil[1]=1.44e-6/(fAvrad[1]*fAvrad[1]);
936 sigmaphil[2]=1.444e-5/(fAvrad[2]*fAvrad[2]);
937 sigmaphil[3]=1.444e-5/(fAvrad[3]*fAvrad[3]);
938 sigmaphil[4]=4e-6/(fAvrad[4]*fAvrad[4]);
939 sigmaphil[5]=4e-6/(fAvrad[5]*fAvrad[5]);
940 sigmazl[0]=1e-2;
941 sigmazl[1]=1e-2;
942 sigmazl[2]=7.84e-4;
943 sigmazl[3]=7.84e-4;
944 sigmazl[4]=0.6889;
945 sigmazl[5]=0.6889;
946 ///////////////////////////////////////////////////////////
947 Int_t index;
7d62fb64 948 AliRunLoader* rl = AliRunLoader::Open("galice.root");
949 rl->CdGAFile();
950 AliITSgeom* g1 = (AliITSgeom*)gDirectory->Get("AliITSgeom");
951
b48af428 952 AliITSRecPoint *recp;
953 for(index =0; index<trackITSlist->GetSize(); index++) {
954 AliITSTrackV1 *trackITS = (AliITSTrackV1 *) trackITSlist->At(index);
955 if((*trackITS).GetLayer()==7) fresult->SetChi2(10.223e140);
956 // cout <<" Layer inizio = "<<(*trackITS).GetLayer()<<"\n";
957 // cout<<"fvtrack =" <<"\n";
958 // cout << (*trackITS)(0) << " "<<(*trackITS)(1)<<" "
959 // <<(*trackITS)(2)<<" "<<(*trackITS)(3)<<" "
960 // <<(*trackITS)(4)<<"\n";
961 // cout<< " rtrack = "<<(*trackITS).Getrtrack()<<"\n";
962 // cout<< " Pt = "<<(*trackITS).GetPt()<<"\n";
963 // getchar();
964 Double_t chi2Now, chi2Ref;
965 Float_t numClustRef = fresult->GetNumClust();
966 if((*trackITS).GetLayer()==1 ) {
967 chi2Now = trackITS->GetChi2();
968 Float_t numClustNow = trackITS->GetNumClust();
969 if(trackITS->GetNumClust())
970 chi2Now /= (Double_t)trackITS->GetNumClust();
971 chi2Ref = fresult->GetChi2();
972 if(fresult->GetNumClust())
973 chi2Ref /= (Double_t)fresult->GetNumClust();
974 //cout<<" chi2Now and chi2Ref = "<<chi2Now<<" "<<chi2Ref<<"\n";
975 if( numClustNow > numClustRef ) {*fresult = *trackITS;}
976 if((numClustNow == numClustRef )&&
977 (chi2Now < chi2Ref)) {
978 *fresult = *trackITS;
979 } // end if
980 continue;
981 } // end if
982
983 if(trackITS->Getfnoclust()>=2) continue;
984 Float_t numClustNow = trackITS->GetNumClust();
985 if(numClustNow) {
986 chi2Now = trackITS->GetChi2();
987
988 if(numClustNow<numClustRef && chi2Now>fresult->GetChi2()) continue;
989 //cout<<" chi2Now = "<<chi2Now<<"\n";
64ab0d55 990
b48af428 991 chi2Now/=numClustNow;
992 if(fPtref > 1.0 && chi2Now > 30.) continue;
993 if((fPtref >= 0.6 && fPtref<=1.0) && chi2Now > 40.) continue;
994 // if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 40.) continue;
995 // if(fPtref <= 0.2 && chi2Now > 8.) continue;
996 if((fPtref <= 0.6 && fPtref>0.2)&& chi2Now > 30.) continue;
997 if(fPtref <= 0.2 && chi2Now > 7.) continue;
998 /////////////////////////////
999 } // end if
1000
1001 Int_t layerInit = (*trackITS).GetLayer();
1002 Int_t layernew = layerInit - 2;// -1 for new layer, -1 for matrix index
1003 TList listoftrack;
1004 Int_t ladp, ladm, detp,detm,ladinters,detinters;
1005 Int_t layerfin=layerInit-1;
1006 // cout<<"Prima di intersection \n";
b48af428 1007 Int_t outinters=Intersection(*trackITS,layerfin,ladinters,detinters);
b48af428 1008 // cout<<" outinters = "<<outinters<<"\n";
1009 // cout<<" Layer ladder detector intersection ="
1010 // <<layerfin<<" "<<ladinters<<" "<<detinters<<"\n";
1011 // cout << " phiinters zinters = "<<(*trackITS)(0)
1012 // << " "<<(*trackITS)(1)<<"\n"; getchar();
1013 if(outinters==-1) continue;
1014 Int_t flaghit=0;
def162f4 1015 (*trackITS).SetLayer(layerfin); // oggi
1016 (*trackITS).Setfcor(); // oggi
b48af428 1017 if(outinters==0){
1018 TVector toucLad(9), toucDet(9);
1019 Int_t lycur=layerfin;
1020 ladp=ladinters+1;
1021 ladm=ladinters-1;
1022 if(ladm <= 0) ladm=fNlad[layerfin-1];
1023 if(ladp > fNlad[layerfin-1]) ladp=1;
1024 detp=detinters+1;
1025 detm=detinters-1;
1026 Int_t idetot=1;
1027 /*
1028 toucLad(0)=ladinters; toucLad(1)=ladm; toucLad(2)=ladp;
1029 toucLad(3)=ladinters; toucLad(4)=ladm; toucLad(5)=ladp;
1030 toucLad(6)=ladinters; toucLad(7)=ladm; toucLad(8)=ladp;
1031 toucDet(0)=detinters; toucDet(1)=detinters; toucDet(2)=detinters;
1032 if(detm > 0 && detp <= fNdet[layerfin-1]) {
1033 idetot=9;
1034 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1035 toucDet(6)=detp; toucDet(7)=detp; toucDet(8)=detp;
1036 } // end if
1037 if(detm > 0 && detp > fNdet[layerfin-1]) {
1038 idetot=6;
1039 toucDet(3)=detm; toucDet(4)=detm; toucDet(5)=detm;
1040 } // end if
1041 if(detm <= 0 && detp <= fNdet[layerfin-1]) {
1042 idetot=6;
1043 toucDet(3)=detp; toucDet(4)=detp; toucDet(5)=detp;
1044 } // end if
1045 */
f66ae545 1046 Float_t epsphi=5.0, epsz=5.0;
b48af428 1047 if(fPtref<0.2) {epsphi=3.; epsz=3.;}
64ab0d55 1048 // new definition of idetot e toucLad e toucDet to be
b48af428 1049 // transformed in a method
1050 // these values could be modified
1051 Float_t pigre=TMath::Pi();
1052 Float_t rangephi=5., rangez=5.;
1053 if(layerfin==1 || layerfin ==2){
1054 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1055 (*trackITS).GetSigmaphi());
1056 rangez = 40.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1057 (*trackITS).GetSigmaZ());
1058 } // end if
1059 if(layerfin==3 || layerfin ==4){
1060 //rangephi=30.*fepsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1061 // (*trackITS).GetSigmaphi());
1062 //rangez = 40.*fepsz*TMath::Sqrt(sigmazl[layerfin-1]+
1063 // (*trackITS).GetSigmaZ());
1064 rangephi=40.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1065 (*trackITS).GetSigmaphi());
1066 rangez = 50.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1067 (*trackITS).GetSigmaZ());
1068 } // end if
1069 if(layerfin==5 || layerfin ==6){
1070 rangephi=20.*epsphi*TMath::Sqrt(sigmaphil[layerfin-1]+
1071 (*trackITS).GetSigmaphi());
1072 rangez =5.*epsz*TMath::Sqrt(sigmazl[layerfin-1]+
1073 (*trackITS).GetSigmaZ());
1074 } // end if
1075 Float_t phinters, zinters;
1076 phinters=(*trackITS).Getphi();
1077 zinters=(*trackITS).GetZ();
1078 Float_t distz = 0.0;
1079 Float_t phicm, phicp, distphim, distphip;
1080 phicm=phinters;
cf411bb5 1081 if(phinters>fphimax[layerfin-1][ladm-1]) phicm=phinters-2*pigre; //corretto il 20-11-2001
1082 distphim=TMath::Abs(phicm-fphimax[layerfin-1][ladm-1]); //corretto il 20-11-2001
b48af428 1083 phicp=phinters;
cf411bb5 1084 //cout<<" fNlad[layerfin-1] e ladp = "<<fNlad[layerfin-1]<<" "<<ladp<<endl;
1085 if(phinters>fphimin[layerfin-1][ladp-1]) phicp=phinters-2.*pigre; //corretto il 20-11-2001
1086 distphip=TMath::Abs(phicp-fphimin[layerfin-1][ladp-1]); //corretto il 20-11-2001
b48af428 1087 Int_t flagzmin=0;
1088 Int_t flagzmax=0;
1089 idetot=1;
1090 toucLad(0)=ladinters; toucDet(0)=detinters;
1091 if(detm>0) distz=TMath::Abs(zinters-fzmax[layerfin-1][detm-1]);
1092 if(detm>0 && rangez>=distz){
1093 flagzmin=1;
1094 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detm;
1095 if(rangephi>=distphim){
1096 idetot++;
1097 toucLad(idetot-1)=ladm;
1098 toucDet(idetot-1)=detinters;
1099 idetot++;
1100 toucLad(idetot-1)=ladm;
1101 toucDet(idetot-1)=detm;
1102 } // end if
1103 if(rangephi>=distphip){
1104 idetot++;
1105 toucLad(idetot-1)=ladp;
1106 toucDet(idetot-1)=detinters;
1107 idetot++;
1108 toucLad(idetot-1)=ladp;
1109 toucDet(idetot-1)=detm;
1110 } // end if
1111 } //end detm>0....
1112 if(detp<=fNdet[layerfin-1])
1113 distz=TMath::Abs(zinters-fzmin[layerfin-1][detp-1]);
1114 if(detp<=fNdet[layerfin-1] && rangez>=distz){
1115 flagzmax=1;
1116 idetot++; toucLad(idetot-1)=ladinters; toucDet(idetot-1)=detp;
1117 if(rangephi>=distphim){
1118 idetot++; toucLad(idetot-1)=ladm; toucDet(idetot-1)=detp;
1119 if(flagzmin == 0) {
1120 idetot++;
1121 toucLad(idetot-1)=ladm;
1122 toucDet(idetot-1)=detinters;
1123 } // end if
1124 } // end if
1125 if(rangephi>=distphip){
1126 idetot++;
1127 toucLad(idetot-1)=ladp;
1128 toucDet(idetot-1)=detp;
1129 if(flagzmin == 0) {
1130 idetot++;
1131 toucLad(idetot-1)=ladp;
1132 toucDet(idetot-1)=detinters;
1133 } // end if
1134 } // end if
1135 } //end detm<fNdet[.......
1136
1137 if(flagzmin == 0 && flagzmax==0){
1138 if(rangephi>=distphim){
1139 idetot++;
1140 toucLad(idetot-1)=ladm;
1141 toucDet(idetot-1)=detinters;
1142 } // end if
1143 if(rangephi>=distphip){
1144 idetot++;
1145 toucLad(idetot-1)=ladp;
1146 toucDet(idetot-1)=detinters;
1147 } // end if
1148 } // end if
1149 ////////////////////////////////////////////////////////////
1150 Int_t iriv;
1151 for (iriv=0; iriv<idetot; iriv++) { //for on detectors
1152 ///////////////////////////////////////////////////////
1153 /*** Rec points sorted by module *****/
1154 /**************************************/
64ab0d55 1155 Int_t indexmod;
b48af428 1156 indexmod = g1->GetModuleIndex(lycur,(Int_t)toucLad(iriv),
64ab0d55 1157 (Int_t)toucDet(iriv));
7d62fb64 1158 fDetTypeRec->ResetRecPoints();
b48af428 1159 gAlice->TreeR()->GetEvent(indexmod);
1160 Int_t npoints=frecPoints->GetEntries();
64ab0d55 1161
b48af428 1162 Int_t indnew;
1163 for(indnew=0; indnew<npoints; indnew++){
1164 if (*(fvettid[indexmod]+indnew)==0)
1165 recp =(AliITSRecPoint*)frecPoints->UncheckedAt(indnew);
1166 else
f66ae545 1167 continue;
b48af428 1168 TVector cluster(3),vecclust(9);
64ab0d55 1169 //vecclust(6)=vecclust(7)=vecclust(8)=-1.;
1170 Double_t sigma[2];
1171 // now vecclust is with cylindrical cohordinates
1172 vecclust(0)=(Float_t)fRecCylR[indexmod][indnew];
1173 vecclust(1)=(Float_t)fRecCylPhi[indexmod][indnew];
1174 vecclust(2)=(Float_t)fRecCylZ[indexmod][indnew];
b48af428 1175 vecclust(3) = (Float_t)recp->fTracks[0];
b48af428 1176 vecclust(4) = (Float_t)indnew;
64ab0d55 1177 vecclust(5) = (Float_t)indexmod;
b48af428 1178 vecclust(6) = (Float_t)recp->fTracks[0];
1179 vecclust(7) = (Float_t)recp->fTracks[1];
1180 vecclust(8) = (Float_t)recp->fTracks[2];
1181 sigma[0] = (Double_t) recp->GetSigmaX2();
1182 sigma[1] = (Double_t) recp->GetSigmaZ2();
64ab0d55 1183
1184 cluster(0)=fRecCylR[indexmod][indnew];
1185 cluster(1)=fRecCylPhi[indexmod][indnew];
1186 cluster(2)=fRecCylZ[indexmod][indnew];
1187
b48af428 1188 // cout<<" layer = "<<play<<"\n";
1189 // cout<<" cluster prima = "<<vecclust(0)<<" "
1190 // <<vecclust(1)<<" "
1191 // <<vecclust(2)<<"\n"; getchar();
1192
1193 Float_t sigmatotphi, sigmatotz;
1194 // Float_t epsphi=5.0, epsz=5.0;
1195 //if(fPtref<0.2) {epsphi=3.; epsz=3.;}
1196 Double_t rTrack=(*trackITS).Getrtrack();
1197 Double_t sigmaphi=sigma[0]/(rTrack*rTrack);
1198 sigmatotphi=epsphi*TMath::Sqrt(sigmaphi +
1199 (*trackITS).GetSigmaphi());
1200 sigmatotz=epsz*TMath::Sqrt(sigma[1] +
1201 (*trackITS).GetSigmaZ());
1202 //cout<<"cluster e sigmatotphi e track = "<<cluster(0)
1203 // <<" "<<cluster(1)<<" "<<sigmatotphi<<" "
1204 // <<vecclust(3)<<"\n";
1205 //if(vecclust(3)==481) getchar();
1206 if(cluster(1)<6. && (*trackITS).Getphi()>6.)
1207 cluster(1)=cluster(1)+(2.*TMath::Pi());
1208 if(cluster(1)>6. && (*trackITS).Getphi()<6.)
1209 cluster(1)=cluster(1)-(2.*TMath::Pi());
1210 if(TMath::Abs(cluster(1)-(*trackITS).Getphi())>sigmatotphi)
1211 continue;
1212 // cout<<" supero sigmaphi \n";
1213 AliITSTrackV1 *newTrack = new AliITSTrackV1((*trackITS));
def162f4 1214 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
b48af428 1215 if (TMath::Abs(rTrack-cluster(0))/rTrack>1e-6)
1216 (*newTrack).Correct(Double_t(cluster(0)));
1217 //cout<<" cluster(2) e(*newTrack).GetZ()="<<cluster(2)<<" "
1218 // << (*newTrack).GetZ()<<"\n";
1219 if(TMath::Abs(cluster(2)-(*newTrack).GetZ()) > sigmatotz){
1220 delete newTrack;
1221 continue;
1222 } // end if
1223 Double_t sigmanew[2];
1224 sigmanew[0]= sigmaphi;
1225 sigmanew[1]=sigma[1];
1226 Double_t m[2];
1227 m[0]=cluster(1);
1228 m[1]=cluster(2);
1229 // Double_t chi2pred=newTrack->GetPredChi2(m,sigmanew);
1230 // cout<<" chi2pred = "<<chi2pred<<"\n";
1231 // if(chi2pred>fChi2max) continue; //aggiunto il 30-7-2001
1232 if(iriv == 0) flaghit=1;
088e0b8d 1233 (*newTrack).AddMS(); // add the multiple scattering
b48af428 1234 //matrix to the covariance matrix
d0df5576 1235 (*newTrack).AddEL(1.,0);
b48af428 1236
b48af428 1237 if(fflagvert){
1238 KalmanFilterVert(newTrack,cluster,sigmanew);
1239 //KalmanFilterVert(newTrack,cluster,sigmanew,chi2pred);
1240 }else{
1241 KalmanFilter(newTrack,cluster,sigmanew);
1242 } // end if
b48af428 1243 (*newTrack).PutCluster(layernew, vecclust);
1244 newTrack->AddClustInTrack();
1245 listoftrack.AddLast(newTrack);
1246 } // end for indnew
b48af428 1247 } // end of for on detectors (iriv)
1248 }//end if(outinters==0)
1249
1250 if(flaghit==0 || outinters==-2) {
1251 AliITSTrackV1 *newTrack = new AliITSTrackV1(*trackITS);
1252 (*newTrack).Setfnoclust();
def162f4 1253 //(*newTrack).SetLayer((*trackITS).GetLayer()-1);
088e0b8d 1254 (*newTrack).AddMS(); // add the multiple scattering matrix
b48af428 1255 // to the covariance matrix
d0df5576 1256 (*newTrack).AddEL(1.,0);
b48af428 1257 listoftrack.AddLast(newTrack);
1258 } // end if
1259
1260 //gObjectTable->Print(); // stampa memoria
04b80329 1261
b48af428 1262 RecursiveTracking(&listoftrack);
1263 listoftrack.Delete();
1264 } // end of for on tracks (index)
04b80329 1265
b48af428 1266 //gObjectTable->Print(); // stampa memoria
7d62fb64 1267 delete rl;
1268
13888096 1269}
b48af428 1270//______________________________________________________________________
1271Int_t AliITSTrackerV1::Intersection(AliITSTrackV1 &track,Int_t layer,
1272 Int_t &ladder,Int_t &detector) {
1273 // Origin A. Badala' and G.S. Pappalardo
1274 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1275 // Found the intersection and the detector
1276
1277 Double_t rk=fAvrad[layer-1];
1278 if(track.DoNotCross(rk)){ /*cout<< " Do not cross \n";*/ return -1;}
1279 track.Propagation(rk);
1280 Double_t zinters=track.GetZ();
1281 Double_t phinters=track.Getphi();
1282 //cout<<"zinters = "<<zinters<<" phinters = "<<phinters<<"\n";
1283
1284 TVector det(9);
1285 TVector listDet(2);
1286 TVector distZCenter(2);
1287
1288 Int_t iz=0;
1289 Int_t iD;
1290 for(iD = 1; iD<= fNdet[layer-1]; iD++) {
1291 if(zinters > fzmin[layer-1][iD-1] && zinters <= fzmax[layer-1][iD-1]) {
1292 if(iz>1) {
1293 cout<< " Errore su iz in Intersection \n";
1294 getchar();
1295 }else {
1296 listDet(iz)= iD; distZCenter(iz)=TMath::Abs(zinters-det(2));
1297 iz++;
1298 } // end if
1299 } // end if
1300 } // end for iD
1301
1302 if(iz==0) {/* cout<< " No detector along Z \n";*/ return -2;}
1303 detector=Int_t (listDet(0));
1304 if(iz>1 && (distZCenter(0)>distZCenter(1))) detector=Int_t (listDet(1));
1305
1306 TVector listLad(2);
1307 TVector distPhiCenter(2);
1308 Int_t ip=0;
1309 Double_t pigre=TMath::Pi();
1310 Int_t iLd;
1311 for(iLd = 1; iLd<= fNlad[layer-1]; iLd++) {
1312 Double_t phimin=fphimin[layer-1][iLd-1];
1313 Double_t phimax=fphimax[layer-1][iLd-1];
1314 Double_t phidet=fphidet[layer-1][iLd-1];
1315 Double_t phiconfr=phinters;
1316 if(phimin>phimax) {
1317 //if(phimin <5.5) {cout<<" Error in Intersection for phi \n";
1318 // getchar();}
1319 phimin-=(2.*pigre);
1320 if(phinters>(1.5*pigre)) phiconfr=phinters-(2.*pigre);
1321 if(phidet>(1.5*pigre)) phidet-=(2.*pigre);
1322 } // end if
1323 if(phiconfr>phimin && phiconfr<= phimax) {
1324 if(ip>1) {
1325 cout<< " Errore su ip in Intersection \n"; getchar();
1326 }else {
1327 listLad(ip)= iLd;
1328 distPhiCenter(ip)=TMath::Abs(phiconfr-phidet); ip++;
1329 } // end if
1330 } // end if
1331 } // end for iLd
1332 if(ip==0) { cout<< " No detector along phi \n"; getchar();}
1333 ladder=Int_t (listLad(0));
1334 if(ip>1 && (distPhiCenter(0)>distPhiCenter(1))) ladder=Int_t (listLad(1));
1335 return 0;
1336}
1337//______________________________________________________________________
1338void AliITSTrackerV1::KalmanFilter(AliITSTrackV1 *newTrack,TVector &cluster,
1339 Double_t sigma[2]){
1340 //Origin A. Badala' and G.S. Pappalardo:
1341 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1342 // Kalman filter without vertex constraint
1343 ////// Evaluation of the measurement vector ////////////////////////
1344 Double_t m[2];
1345 Double_t rk,phik,zk;
1346 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1347 m[0]=phik; m[1]=zk;
1348 //////////////////////// Evaluation of the error matrix V /////////
1349 Double_t v00=sigma[0];
1350 Double_t v11=sigma[1];
1351 ////////////////////////////////////////////////////////////////////
1352 Double_t cin00,cin10,cin20,cin30,cin40,cin11,cin21,cin31,cin41,cin22,
1353 cin32,cin42,cin33,cin43,cin44;
1354
1355 newTrack->GetCElements(cin00,
1356 cin10,cin11,
1357 cin20,cin21,cin22,
1358 cin30,cin31,cin32,cin33,
1359 cin40,cin41,cin42,cin43,cin44); //get C matrix
1360 Double_t rold00=cin00+v00;
1361 Double_t rold10=cin10;
1362 Double_t rold11=cin11+v11;
1363 ////////////////////// R matrix inversion /////////////////////////
1364 Double_t det=rold00*rold11-rold10*rold10;
1365 Double_t r00=rold11/det;
1366 Double_t r10=-rold10/det;
1367 Double_t r11=rold00/det;
1368 ////////////////////////////////////////////////////////////////////
1369 Double_t k00=cin00*r00+cin10*r10;
1370 Double_t k01=cin00*r10+cin10*r11;
1371 Double_t k10=cin10*r00+cin11*r10;
1372 Double_t k11=cin10*r10+cin11*r11;
1373 Double_t k20=cin20*r00+cin21*r10;
1374 Double_t k21=cin20*r10+cin21*r11;
1375 Double_t k30=cin30*r00+cin31*r10;
1376 Double_t k31=cin30*r10+cin31*r11;
1377 Double_t k40=cin40*r00+cin41*r10;
1378 Double_t k41=cin40*r10+cin41*r11;
1379 Double_t x0,x1,x2,x3,x4;
1380 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1381 Double_t savex0=x0, savex1=x1;
1382 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1);
1383 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1);
1384 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1);
1385 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1);
1386 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1);
1387 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1388 c00=cin00-k00*cin00-k01*cin10;
1389 c10=cin10-k00*cin10-k01*cin11;
1390 c20=cin20-k00*cin20-k01*cin21;
1391 c30=cin30-k00*cin30-k01*cin31;
1392 c40=cin40-k00*cin40-k01*cin41;
1393 c11=cin11-k10*cin10-k11*cin11;
1394 c21=cin21-k10*cin20-k11*cin21;
1395 c31=cin31-k10*cin30-k11*cin31;
1396 c41=cin41-k10*cin40-k11*cin41;
1397 c22=cin22-k20*cin20-k21*cin21;
1398 c32=cin32-k20*cin30-k21*cin31;
1399 c42=cin42-k20*cin40-k21*cin41;
1400 c33=cin33-k30*cin30-k31*cin31;
1401 c43=cin43-k30*cin40-k31*cin41;
1402 c44=cin44-k40*cin40-k41*cin41;
1403 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1404 newTrack->PutCElements(c00,
1405 c10,c11,
1406 c20,c21,c22,
1407 c30,c31,c32,c33,
1408 c40,c41,c42,c43,c44); // put in track the
1409 // new cov matrix
1410 Double_t vmcold00=v00-c00;
1411 Double_t vmcold10=-c10;
1412 Double_t vmcold11=v11-c11;
1413 ////////////////////// Matrix vmc inversion ///////////////////////
1414 det=vmcold00*vmcold11-vmcold10*vmcold10;
1415 Double_t vmc00=vmcold11/det;
1416 Double_t vmc10=-vmcold10/det;
1417 Double_t vmc11=vmcold00/det;
1418 ////////////////////////////////////////////////////////////////////
1419 Double_t chi2=(m[0]-x0)*( vmc00*(m[0]-x0) + 2.*vmc10*(m[1]-x1) ) +
1420 (m[1]-x1)*vmc11*(m[1]-x1);
04b80329 1421 newTrack->SetChi2(newTrack->GetChi2()+chi2);
b48af428 1422}
1423//----------------------------------------------------------------------
1424//void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1425// TVector &cluster,Double_t sigma[2]){
1426void AliITSTrackerV1::KalmanFilterVert(AliITSTrackV1 *newTrack,
1427 TVector &cluster,Double_t sigma[2]
1428 /*, Double_t chi2pred*/){
1429 //Origin A. Badala' and G.S. Pappalardo:
1430 // e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it
1431 // Kalman filter with vertex constraint
1432 ///////////////////// Evaluation of the measurement vector m ////////
1433 Double_t m[4];
1434 Double_t rk,phik,zk;
1435 rk=cluster(0); phik=cluster(1); zk=cluster(2);
1436 m[0]=phik; m[1]=zk;
1437 Double_t cc=(*newTrack).GetC();
1438 Double_t zv=(*newTrack).GetZv();
1439 Double_t dv=(*newTrack).GetDv();
1440 Double_t cy=cc/2.;
1441 Double_t tgl= (zk-zv)*cy/TMath::ASin(cy*rk);
1442 m[2]=dv; m[3]=tgl;
1443 /////////////////////// Evaluation of the error matrix V //////////
1444 Int_t layer=newTrack->GetLayer();
1445 Double_t v00=sigma[0];
1446 Double_t v11=sigma[1];
1447 Double_t v31=sigma[1]/rk;
1448 Double_t sigmaDv=newTrack->GetsigmaDv();
1449 Double_t v22=sigmaDv*sigmaDv + newTrack->Getd2(layer-1);
1450 Double_t v32=newTrack->Getdtgl(layer-1);
1451 Double_t sigmaZv=newTrack->GetsigmaZv();
1452 Double_t v33=(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+newTrack->Gettgl2(layer-1);
1453 //////////////////////////////////////////////////////////////////
1454 Double_t cin00,cin10,cin11,cin20,cin21,cin22,
1455 cin30,cin31,cin32,cin33,cin40,cin41,cin42,cin43,cin44;
1456 newTrack->GetCElements(cin00,
1457 cin10,cin11,
1458 cin20,cin21,cin22,
1459 cin30,cin31,cin32,cin33,
1460 cin40,cin41,cin42,cin43,cin44); //get C matrix
1461 Double_t r[4][4];
1462 r[0][0]=cin00+v00;
1463 r[1][0]=cin10;
1464 r[2][0]=cin20;
1465 r[3][0]=cin30;
1466 r[1][1]=cin11+v11;
1467 r[2][1]=cin21;
1468 r[3][1]=cin31+sigma[1]/rk;
1469 r[2][2]=cin22+sigmaDv*sigmaDv+newTrack->Getd2(layer-1);
1470 r[3][2]=cin32+newTrack->Getdtgl(layer-1);
1471 r[3][3]=cin33+(sigma[1]+sigmaZv*sigmaZv)/(rk*rk)+
1472 newTrack->Gettgl2(layer-1);
1473 r[0][1]=r[1][0]; r[0][2]=r[2][0]; r[0][3]=r[3][0];
1474 r[1][2]=r[2][1]; r[1][3]=r[3][1]; r[2][3]=r[3][2];
1475 ///////////////////// Matrix R inversion //////////////////////////
1476 const Int_t kn=4;
1477 Double_t big, hold;
1478 Double_t d=1.;
1479 Int_t ll[kn],mm[kn];
1480 Int_t i,j,k;
1481
1482 for(k=0; k<kn; k++) {
1483 ll[k]=k;
1484 mm[k]=k;
1485 big=r[k][k];
1486 for(j=k; j<kn ; j++) {
1487 for (i=j; i<kn; i++) {
1488 if(TMath::Abs(big) < TMath::Abs(r[i][j]) ) {
1489 big=r[i][j];
1490 ll[k]=i;
1491 mm[k]=j;
1492 } // end if
1493 } // end for i
1494 } // end for j
1495 //
1496 j= ll[k];
1497 if(j > k) {
1498 for(i=0; i<kn; i++) {
1499 hold=-r[k][i];
1500 r[k][i]=r[j][i];
1501 r[j][i]=hold;
1502 } // end for i
1503 }// end if
1504 //
1505 i=mm[k];
1506 if(i > k ) {
1507 for(j=0; j<kn; j++) {
1508 hold=-r[j][k];
1509 r[j][k]=r[j][i];
1510 r[j][i]=hold;
1511 } // end for j
1512 } // end if
1513 //
1514 if(!big) {
1515 d=0.;
1516 cout << "Singular matrix\n";
1517 } // end if
1518 for(i=0; i<kn; i++) {
1519 if(i == k) { continue; }
1520 r[i][k]=r[i][k]/(-big);
1521 } // end for i
1522 //
1523 for(i=0; i<kn; i++) {
1524 hold=r[i][k];
1525 for(j=0; j<kn; j++) {
1526 if(i == k || j == k) continue;
1527 r[i][j]=hold*r[k][j]+r[i][j];
1528 } // end for j
1529 } // end of ri
1530 //
1531 for(j=0; j<kn; j++) {
1532 if(j == k) continue;
1533 r[k][j]=r[k][j]/big;
1534 } // end for j
1535 //
1536 d=d*big;
1537 //
1538 r[k][k]=1./big;
1539 } // end for k
1540 //
1541 for(k=kn-1; k>=0; k--) {
1542 i=ll[k];
1543 if(i > k) {
1544 for (j=0; j<kn; j++) {
1545 hold=r[j][k];
1546 r[j][k]=-r[j][i];
1547 r[j][i]=hold;
1548 } // end for j
1549 } // end if i
1550 j=mm[k];
1551 if(j > k) {
1552 for (i=0; i<kn; i++) {
1553 hold=r[k][i];
1554 r[k][i]=-r[j][i];
1555 r[j][i]=hold;
1556 } // end for i
1557 } // end if
1558 } // end for k
1559 ////////////////////////////////////////////////////////////////////
1560 Double_t k00=cin00*r[0][0]+cin10*r[1][0]+cin20*r[2][0]+cin30*r[3][0];
1561 Double_t k01=cin00*r[1][0]+cin10*r[1][1]+cin20*r[2][1]+cin30*r[3][1];
1562 Double_t k02=cin00*r[2][0]+cin10*r[2][1]+cin20*r[2][2]+cin30*r[3][2];
1563 Double_t k03=cin00*r[3][0]+cin10*r[3][1]+cin20*r[3][2]+cin30*r[3][3];
1564 Double_t k10=cin10*r[0][0]+cin11*r[1][0]+cin21*r[2][0]+cin31*r[3][0];
1565 Double_t k11=cin10*r[1][0]+cin11*r[1][1]+cin21*r[2][1]+cin31*r[3][1];
1566 Double_t k12=cin10*r[2][0]+cin11*r[2][1]+cin21*r[2][2]+cin31*r[3][2];
1567 Double_t k13=cin10*r[3][0]+cin11*r[3][1]+cin21*r[3][2]+cin31*r[3][3];
1568 Double_t k20=cin20*r[0][0]+cin21*r[1][0]+cin22*r[2][0]+cin32*r[3][0];
1569 Double_t k21=cin20*r[1][0]+cin21*r[1][1]+cin22*r[2][1]+cin32*r[3][1];
1570 Double_t k22=cin20*r[2][0]+cin21*r[2][1]+cin22*r[2][2]+cin32*r[3][2];
1571 Double_t k23=cin20*r[3][0]+cin21*r[3][1]+cin22*r[3][2]+cin32*r[3][3];
1572 Double_t k30=cin30*r[0][0]+cin31*r[1][0]+cin32*r[2][0]+cin33*r[3][0];
1573 Double_t k31=cin30*r[1][0]+cin31*r[1][1]+cin32*r[2][1]+cin33*r[3][1];
1574 Double_t k32=cin30*r[2][0]+cin31*r[2][1]+cin32*r[2][2]+cin33*r[3][2];
1575 Double_t k33=cin30*r[3][0]+cin31*r[3][1]+cin32*r[3][2]+cin33*r[3][3];
1576 Double_t k40=cin40*r[0][0]+cin41*r[1][0]+cin42*r[2][0]+cin43*r[3][0];
1577 Double_t k41=cin40*r[1][0]+cin41*r[1][1]+cin42*r[2][1]+cin43*r[3][1];
1578 Double_t k42=cin40*r[2][0]+cin41*r[2][1]+cin42*r[2][2]+cin43*r[3][2];
1579 Double_t k43=cin40*r[3][0]+cin41*r[3][1]+cin42*r[3][2]+cin43*r[3][3];
1580
1581 Double_t x0,x1,x2,x3,x4;
1582 newTrack->GetXElements(x0,x1,x2,x3,x4); // get the state vector
1583 Double_t savex0=x0, savex1=x1, savex2=x2, savex3=x3;
1584 x0+=k00*(m[0]-savex0)+k01*(m[1]-savex1)+k02*(m[2]-savex2)+
1585 k03*(m[3]-savex3);
1586 x1+=k10*(m[0]-savex0)+k11*(m[1]-savex1)+k12*(m[2]-savex2)+
1587 k13*(m[3]-savex3);
1588 x2+=k20*(m[0]-savex0)+k21*(m[1]-savex1)+k22*(m[2]-savex2)+
1589 k23*(m[3]-savex3);
1590 x3+=k30*(m[0]-savex0)+k31*(m[1]-savex1)+k32*(m[2]-savex2)+
1591 k33*(m[3]-savex3);
1592 x4+=k40*(m[0]-savex0)+k41*(m[1]-savex1)+k42*(m[2]-savex2)+
1593 k43*(m[3]-savex3);
1594 Double_t c00,c10,c20,c30,c40,c11,c21,c31,c41,c22,c32,c42,c33,c43,c44;
1595 c00=cin00-k00*cin00-k01*cin10-k02*cin20-k03*cin30;
1596 c10=cin10-k00*cin10-k01*cin11-k02*cin21-k03*cin31;
1597 c20=cin20-k00*cin20-k01*cin21-k02*cin22-k03*cin32;
1598 c30=cin30-k00*cin30-k01*cin31-k02*cin32-k03*cin33;
1599 c40=cin40-k00*cin40-k01*cin41-k02*cin42-k03*cin43;
1600 c11=cin11-k10*cin10-k11*cin11-k12*cin21-k13*cin31;
1601 c21=cin21-k10*cin20-k11*cin21-k12*cin22-k13*cin32;
1602 c31=cin31-k10*cin30-k11*cin31-k12*cin32-k13*cin33;
1603 c41=cin41-k10*cin40-k11*cin41-k12*cin42-k13*cin43;
1604 c22=cin22-k20*cin20-k21*cin21-k22*cin22-k23*cin32;
1605 c32=cin32-k20*cin30-k21*cin31-k22*cin32-k23*cin33;
1606 c42=cin42-k20*cin40-k21*cin41-k22*cin42-k23*cin43;
1607 c33=cin33-k30*cin30-k31*cin31-k32*cin32-k33*cin33;
1608 c43=cin43-k30*cin40-k31*cin41-k32*cin42-k33*cin43;
1609 c44=cin44-k40*cin40-k41*cin41-k42*cin42-k43*cin43;
1610
1611 newTrack->PutXElements(x0,x1,x2,x3,x4); // put the new state vector
1612 newTrack->PutCElements(c00,
1613 c10,c11,
1614 c20,c21,c22,
1615 c30,c31,c32,c33,
1616 c40,c41,c42,c43,c44); // put in track the
1617 // new cov matrix
1618 Double_t vmc[4][4];
1619 vmc[0][0]=v00-c00; vmc[1][0]=-c10; vmc[2][0]=-c20; vmc[3][0]=-c30;
1620 vmc[1][1]=v11-c11; vmc[2][1]=-c21; vmc[3][1]=v31-c31;
1621 vmc[2][2]=v22-c22; vmc[3][2]=v32-c32;
1622 vmc[3][3]=v33-c33;
1623 vmc[0][1]=vmc[1][0]; vmc[0][2]=vmc[2][0]; vmc[0][3]=vmc[3][0];
1624 vmc[1][2]=vmc[2][1]; vmc[1][3]=vmc[3][1];
1625 vmc[2][3]=vmc[3][2];
1626 /////////////////////// vmc matrix inversion ///////////////////////
1627 d=1.;
1628 for(k=0; k<kn; k++) {
1629 ll[k]=k;
1630 mm[k]=k;
1631 big=vmc[k][k];
1632 for(j=k; j<kn ; j++) {
1633 for (i=j; i<kn; i++) {
1634 if(TMath::Abs(big) < TMath::Abs(vmc[i][j]) ) {
1635 big=vmc[i][j];
1636 ll[k]=i;
1637 mm[k]=j;
1638 } // end if
1639 } // end for i
1640 } // end for j
1641 //
1642 j= ll[k];
1643 if(j > k) {
1644 for(i=0; i<kn; i++) {
1645 hold=-vmc[k][i];
1646 vmc[k][i]=vmc[j][i];
1647 vmc[j][i]=hold;
1648 } // end for i
1649 } // end if
1650 //
1651 i=mm[k];
1652 if(i > k ) {
1653 for(j=0; j<kn; j++) {
1654 hold=-vmc[j][k];
1655 vmc[j][k]=vmc[j][i];
1656 vmc[j][i]=hold;
1657 } // end for j
1658 } // end if
1659 //
1660 if(!big) {
1661 d=0.;
1662 cout << "Singular matrix\n";
1663 } // end if
1664 for(i=0; i<kn; i++) {
1665 if(i == k) continue;
1666 vmc[i][k]=vmc[i][k]/(-big);
1667 } // end for i
1668 //
1669 for(i=0; i<kn; i++) {
1670 hold=vmc[i][k];
1671 for(j=0; j<kn; j++) {
1672 if(i == k || j == k) continue;
1673 vmc[i][j]=hold*vmc[k][j]+vmc[i][j];
1674 } // end for j
1675 } // end for i
1676 //
1677 for(j=0; j<kn; j++) {
1678 if(j == k) continue;
1679 vmc[k][j]=vmc[k][j]/big;
1680 } // end for j
1681 //
1682 d=d*big;
1683 //
1684 vmc[k][k]=1./big;
1685 } // end for k
1686 //
1687 for(k=kn-1; k>=0; k--) {
1688 i=ll[k];
1689 if(i > k) {
1690 for (j=0; j<kn; j++) {
1691 hold=vmc[j][k];
1692 vmc[j][k]=-vmc[j][i];
1693 vmc[j][i]=hold;
1694 } // end for j
1695 } // end if i>k
1696 j=mm[k];
1697 if(j > k) {
1698 for (i=0; i<kn; i++) {
1699 hold=vmc[k][i];
1700 vmc[k][i]=-vmc[j][i];
1701 vmc[j][i]=hold;
1702 } // end for i
1703 } // end if j>k
1704 } // end for k
1705 ////////////////////////////////////////////////////////////////////
1706 Double_t chi2=(m[0]-x0)*( vmc[0][0]*(m[0]-x0) + 2.*vmc[1][0]*(m[1]-x1) +
1707 2.*vmc[2][0]*(m[2]-x2)+ 2.*vmc[3][0]*(m[3]-x3) )+
1708 (m[1]-x1)* ( vmc[1][1]*(m[1]-x1) + 2.*vmc[2][1]*(m[2]-x2)+
1709 2.*vmc[3][1]*(m[3]-x3) ) +
1710 (m[2]-x2)* ( vmc[2][2]*(m[2]-x2)+ 2.*vmc[3][2]*(m[3]-x3) ) +
1711 (m[3]-x3)*vmc[3][3]*(m[3]-x3);
1712 //cout<<" chi2 kalman = "<<chi2<<"\n"; getchar();
1713 newTrack->SetChi2(newTrack->GetChi2()+chi2);
1714 // newTrack->SetChi2(newTrack->GetChi2()+chi2pred);
1715}
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