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AliTPCComparison2.C
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1 
11 #if !defined(__CINT__) || defined(__MAKECINT__)
12 #include<fstream.h>
13 #include<TROOT.h>
14 #include<TCanvas.h>
15 #include<TClassTable.h>
16 #include<TClonesArray.h>
17 #include<TFile.h>
18 #include<TFolder.h>
19 #include<TH1.h>
20 #include<TObject.h>
21 #include<TObjArray.h>
22 #include<TParticle.h>
23 #include<TTree.h>
24 #include <AliMagF.h>
25 #include <AliRun.h>
26 #include <alles.h>
27 #endif
28 
29 /*
30  multievent comparison of reconstructed tracks with "exact tracks"
31  from silulation
32 
33 */
34 
35 
36 struct GoodTrackTPC {
37  Int_t fEventN; //event number
38  Int_t lab;
39  Int_t code;
40  Float_t px,py,pz;
41  Float_t x,y,z;
42 };
43 
44 enum tagprimary {kPrimaryCharged = 0x4000};
45 
46 Int_t good_tracks(GoodTrackTPC *gt, Int_t max, Int_t firstev, Int_t eventn);
47 
48 Int_t FindPrimaries(Int_t nparticles);
49 
50 Int_t AliTPCComparison2(Int_t firstev=0, Int_t eventn=1) {
51 
52  const Int_t MAX = 20000;
53  const Bool_t kOLD = kFALSE; // if tracking was done with a previous version
54  /***********************************************************************/
55 
56  TFile *inkin = TFile::Open("rfio:galice.root");
57 // \file AliTPCComparison2.C
58 // if(gAlice)delete gAlice; COMMENTED BECAUSE OF A BUG (IN COMPILED MODE)
59 
60  gAlice = (AliRun*)inkin->Get("gAlice");
61  cout<<"AliRun object found on file "<<gAlice<<endl;
62  AliKalmanTrack::SetFieldMap(gAlice->Field());
63  inkin->Close();
64  /*
65  delete gAlice; COMMENTED BECAUSE OF A BUG IN COMPILED MODE
66  gAlice = 0;
67  */
68  /***********************************************************************/
69  cerr<<"Doing comparison...\n";
70  Int_t i;
71  gBenchmark->Start("AliTPCComparison2");
72 
73  TFile *cf=0;
74  AliTPCParam *digp=0;
75  if(kOLD){
76  cf=TFile::Open("AliTPCclusters.root");
77  if (!cf->IsOpen()) {cerr<<"Can't open AliTPCclusters.root !\n"; return 1;}
78  digp= (AliTPCParam*)cf->Get("75x40_100x60_150x60");
79  if (!digp) { cerr<<"TPC parameters have not been found !\n"; return 2; }
80  }
81 
82  TObjArray tarray(MAX);
83  AliTPCtrack *iotrack=0;
84  Int_t nentr= 0;
85  Int_t eventptr[1000];
86  TFile *tf=TFile::Open("AliTPCtracks.root");
87  TTree *tracktree=0;
88 
89  eventptr[firstev]=0;
90  eventptr[firstev+1]=0;
91  for (Int_t event=firstev;event<eventn; event++){
92  cout<<"================================================"<<endl;
93  cout<<"Processing event "<<event<<endl;
94  cout<<"================================================"<<endl;
95 
96  char tname[100];
97  if (eventn==-1) {
98  sprintf(tname,"TreeT_TPC");
99  }
100  else {
101  sprintf(tname,"TreeT_TPC_%d",event);
102  }
103 
104  // Load tracks
105  if (!tf->IsOpen()) {cerr<<"Can't open AliTPCtracks.root !\n"; return 3;}
106 
107  tracktree=(TTree*)tf->Get(tname);
108  if (!tracktree) {cerr<<"Can't get a tree with TPC tracks !\n"; return 4;}
109  TBranch *tbranch=tracktree->GetBranch("tracks");
110  Int_t nentr0=(Int_t)tracktree->GetEntries();
111  nentr+=nentr0;
112  for (i=0; i<nentr0; i++) {
113  iotrack=new AliTPCtrack;
114  tbranch->SetAddress(&iotrack);
115  tracktree->GetEvent(i);
116  tarray.AddLast(iotrack);
117  }
118  eventptr[event+1] = nentr; //store end of the event
119  delete tracktree;
120  }
121  tf->Close();
122  if(kOLD)cf->Close();
123 
124  GoodTrackTPC gt[MAX];
125 
126  Int_t ngood=0;
127  ifstream in("good_tracks_tpc");
128  if (in) {
129  cerr<<"Reading good tracks...\n";
130  while (in>>gt[ngood].fEventN>>gt[ngood].lab>>gt[ngood].code>>
131  gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
132  gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
133  ngood++;
134  cerr<<ngood<<"\r";
135  //cout<<ngood<<"\r";
136  if (ngood==MAX) {
137  cerr<<"Too many good tracks !\n";
138  break;
139  }
140  }
141  cout<<endl;
142  if (!in.eof()) cerr<<"Read error (good_tracks_tpc) !\n";
143  } else {
144  cerr<<"Marking good tracks (this will take a while)...\n";
145  ngood=good_tracks(gt,45000,firstev,eventn);
146  printf("Goood %d\n", ngood);
147  ofstream out("good_tracks_tpc");
148  if (out) {
149  cout<<"File good_tracks_tpc opened\n";
150  for (Int_t ngd=0; ngd<ngood; ngd++) {
151  out<<gt[ngd].fEventN<<' '<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
152  gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
153  gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
154  }
155  } else cerr<<"Can not open file (good_tracks_tpc) !\n";
156  out<<flush;
157  out.close();
158 
159  ofstream out2("good_tracks_tpc_par");
160 
161  if (out2) {
162  //cout<<"File good_tracks_tpc opened\n";
163  for (Int_t ngd=0; ngd<ngood; ngd++) {
164  Float_t pt = TMath::Sqrt(gt[ngd].px*gt[ngd].px+gt[ngd].py*gt[ngd].py);
165  Float_t angle = 0;
166  if (TMath::Abs(pt)>0.01) angle = gt[ngd].pz/pt;
167  out2<<gt[ngd].fEventN<<"\t"<<gt[ngd].lab<<"\t"<<gt[ngd].code<<"\t"<<
168  pt<<"\t"<<angle<<"\t"<<endl;
169  }
170  } else cerr<<"Can not open file (good_tracks_tpc) !\n";
171  out2<<flush;
172  out2.close();
173 
174  }
175  cerr<<"Number of good tracks : "<<ngood<<endl;
176  cout<<"Number of good tracks : "<<ngood<<endl;
177  if(ngood==0)return 5;
178  TH1F *hp=new TH1F("hp","PHI resolution",50,-20.,20.); hp->SetFillColor(4);
179  TH1F *hl=new TH1F("hl","LAMBDA resolution",50,-20,20);hl->SetFillColor(4);
180  TH1F *hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
181  hpt->SetFillColor(2);
182  TH1F *hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
183  hmpt->SetFillColor(6);
184 
185  AliTPCtrack *trk=(AliTPCtrack*)tarray.UncheckedAt(0);
186 
187  Double_t pmin=0.1*(100/0.299792458/0.2/trk->GetConvConst());
188  Double_t pmax=6.0+pmin;
189 
190  TH1F *hgood=new TH1F("hgood","Good tracks",30,pmin,pmax);
191  TH1F *hfound=new TH1F("hfound","Found tracks",30,pmin,pmax);
192  TH1F *hfake=new TH1F("hfake","Fake tracks",30,pmin,pmax);
193  TH1F *hg=new TH1F("hg","",30,pmin,pmax); //efficiency for good tracks
194  hg->SetLineColor(4); hg->SetLineWidth(2);
195  TH1F *hf=new TH1F("hf","Efficiency for fake tracks",30,pmin,pmax);
196  hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
197 
198  TH1F *he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
199  TH2F *hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,250.);
200  hep->SetMarkerStyle(8);
201  hep->SetMarkerSize(0.4);
202 
203  Int_t mingood=ngood;
204  Int_t track_notfound[MAX], itrack_notfound=0;
205  Int_t track_fake[MAX], itrack_fake=0;
206  Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;
207  while (ngood--) {
208  Int_t lab=gt[ngood].lab,tlab=-1;
209  Float_t ptg=
210  TMath::Sqrt(gt[ngood].px*gt[ngood].px + gt[ngood].py*gt[ngood].py);
211 
212  if (ptg<pmin) continue; // Should be 1e-33 instead pmin?
213 
214  hgood->Fill(ptg);
215  Int_t ievent = gt[ngood].fEventN;
216 
217  AliTPCtrack *track=0;
218  for (i=eventptr[ievent]; i<eventptr[ievent+1]; i++) {
219 
220  track=(AliTPCtrack*)tarray.UncheckedAt(i);
221  tlab=track->GetLabel();
222  if (lab==TMath::Abs(tlab)) break;
223  }
224  if (i==eventptr[ievent+1]) {
225  track_notfound[itrack_notfound++]=lab;
226  continue;
227  }
228 
229  Int_t micount=0;
230  Int_t mi;
231  AliTPCtrack * mitrack;
232  for (mi=eventptr[ievent]; mi<eventptr[ievent+1]; mi++) {
233 
234  mitrack=(AliTPCtrack*)tarray.UncheckedAt(mi);
235  if (lab==TMath::Abs(mitrack->GetLabel())) micount++;
236  }
237  if (micount>1) {
238  track_multifound[itrack_multifound]=lab;
239  track_multifound_n[itrack_multifound]=micount;
240  itrack_multifound++;
241  }
242 
243  //
244  Double_t xk=gt[ngood].x;
245  if (!track) continue;
246  // printf("Track =%p\n",track);
247  track->PropagateTo(xk);
248 
249  if (lab==tlab) hfound->Fill(ptg);
250  else {
251  track_fake[itrack_fake++]=lab;
252  hfake->Fill(ptg);
253  }
254  Double_t par[5]; track->GetExternalParameters(xk,par);
255  Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
256  if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
257  if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
258  Float_t lam=TMath::ATan(par[3]);
259  Float_t pt_1=TMath::Abs(par[4]);
260 
261  if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
262  hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
263  }
264  //else
265  {
266  Float_t phig=TMath::ATan2(gt[ngood].py,gt[ngood].px);
267  hp->Fill((phi - phig)*1000.);
268 
269  Float_t lamg=TMath::ATan2(gt[ngood].pz,ptg);
270  hl->Fill((lam - lamg)*1000.);
271 
272  hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
273  }
274 
275  Float_t mom=1./(pt_1*TMath::Cos(lam));
276  Float_t dedx=track->GetdEdx();
277  hep->Fill(mom,dedx,1.);
278  if (TMath::Abs(gt[ngood].code)==211)
279  if (mom>0.4 && mom<0.5) {
280  he->Fill(dedx,1.);
281  }
282 
283  }
284 
285  cout<<"\nList of Not found tracks :\n";
286  for ( i = 0; i< itrack_notfound; i++){
287  cout<<track_notfound[i]<<"\t";
288  if ((i%5)==4) cout<<"\n";
289  }
290  cout<<"\nList of fake tracks :\n";
291  for ( i = 0; i< itrack_fake; i++){
292  cout<<track_fake[i]<<"\t";
293  if ((i%5)==4) cout<<"\n";
294  }
295  cout<<"\nList of multiple found tracks :\n";
296  for ( i=0; i<itrack_multifound; i++) {
297  cout<<"id. "<<track_multifound[i]
298  <<" found - "<<track_multifound_n[i]<<"times\n";
299  }
300 
301  Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
302  if (ng!=0) cerr<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
303  if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
304  cout<<"Total number of found tracks ="<<nentr<<endl;
305  cout<<"Total number of \"good\" tracks ="
306  <<mingood<<" (selected for comparison: "<<ng<<')'<<endl<<endl;
307 
308 
309  gStyle->SetOptStat(111110);
310  gStyle->SetOptFit(1);
311 
312  TCanvas *c1=new TCanvas("c1","",0,0,700,850);
313 
314  TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
315  p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
316  hp->SetFillColor(4); hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();
317 
318  TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
319  p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
320  hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();
321 
322  TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
323  p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
324  hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();
325 
326  TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
327  p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
328  hmpt->SetXTitle("(%)"); hmpt->Fit("gaus"); c1->cd();
329 
330  TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
331  p5->SetFillColor(41); p5->SetFrameFillColor(10);
332  hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
333  hg->Divide(hfound,hgood,1,1.,"b");
334  hf->Divide(hfake,hgood,1,1.,"b");
335  hg->SetMaximum(1.4);
336  hg->SetYTitle("Tracking efficiency");
337  hg->SetXTitle("Pt (GeV/c)");
338  hg->Draw();
339 
340  TLine *line1 = new TLine(pmin,1.0,pmax,1.0); line1->SetLineStyle(4);
341  line1->Draw("same");
342  TLine *line2 = new TLine(pmin,0.9,pmax,0.9); line2->SetLineStyle(4);
343  line2->Draw("same");
344 
345  hf->SetFillColor(1);
346  hf->SetFillStyle(3013);
347  hf->SetLineColor(2);
348  hf->SetLineWidth(2);
349  hf->Draw("histsame");
350  TText *text = new TText(0.461176,0.248448,"Fake tracks");
351  text->SetTextSize(0.05);
352  text->Draw();
353  text = new TText(0.453919,1.11408,"Good tracks");
354  text->SetTextSize(0.05);
355  text->Draw();
356 
357 
358 
359  TCanvas *c2=new TCanvas("c2","",320,32,530,590);
360 
361  TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
362  p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
363  he->SetFillColor(2); he->SetFillStyle(3005);
364  he->SetXTitle("Arbitrary Units");
365  he->Fit("gaus"); c2->cd();
366 
367  TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
368  p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
369  hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
370  hep->Draw(); c1->cd();
371 
372  gBenchmark->Stop("AliTPCComparison2");
373  gBenchmark->Show("AliTPCComparison2");
374 
375 
376  return 0;
377 }
378 
379 
380 Int_t good_tracks(GoodTrackTPC *gt, Int_t max, Int_t firstev, Int_t eventn) {
382 
383  TFile *file=TFile::Open("galice.root");
384  if (!file->IsOpen()) {cerr<<"Can't open galice.root !\n"; exit(4);}
385  // delete gAlice; gAlice = 0;
386  if (!(gAlice=(AliRun*)file->Get("gAlice"))) {
387  cerr<<"gAlice have not been found on galice.root !\n";
388  exit(5);
389  }
390 
391  TFile *fdigit = TFile::Open("digits.root");
392  file->cd();
393 
394  AliTPC *TPC=(AliTPC*)gAlice->GetDetector("TPC");
395  Int_t ver = TPC->IsVersion();
396  cerr<<"TPC version "<<ver<<" has been found !\n";
397 
398  AliTPCParam *digp=(AliTPCParam*)file->Get("75x40_100x60");
399  if(digp){
400  cerr<<"2 pad-lenght geom hits with 3 pad-length geom digits...\n";
401  delete digp;
402  digp = new AliTPCParamSR();
403  }
404  else
405  {
406  digp =(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
407  }
408 
409  if (!digp) { cerr<<"TPC parameters have not been found !\n"; exit(6); }
410  TPC->SetParam(digp);
411 
412  Int_t nrow_up=digp->GetNRowUp();
413  Int_t nrows=digp->GetNRowLow()+nrow_up;
414  Int_t zero=digp->GetZeroSup();
415  Int_t gap=Int_t(0.125*nrows), shift=Int_t(0.5*gap);
416  Int_t good_number=Int_t(0.4*nrows);
417 
418  Int_t nt=0; //reset counter
419  char treeName[100]; //declare event identifier
420 
421  for (Int_t event=firstev;event<eventn;event++){
422  Int_t np=gAlice->GetEvent(event);
423  Int_t nopr = FindPrimaries(np);
424  cout<<"function good_tracks -- event "<<event<<", Charged primaries:"<<nopr<<"\n";
425 
426  Int_t *good=new Int_t[np];
427  for (Int_t ii=0; ii<np; ii++) good[ii]=0;
428 
429 
430  Int_t sectors_by_rows=0;
431  TTree *TD=0;
432  AliSimDigits da, *digits=&da;
433  Int_t *count=0;
434  switch (ver) {
435  case 1:
436  {
437  TFile *cf=TFile::Open("AliTPCclusters.root");
438  if (!cf->IsOpen()){cerr<<"Can't open AliTPCclusters.root !\n";exit(5);}
439  AliTPCClustersArray *ca=new AliTPCClustersArray;
440  ca->Setup(digp);
441  ca->SetClusterType("AliTPCcluster");
442  ca->ConnectTree("TreeC_TPC_0");
443  Int_t nrows=Int_t(ca->GetTree()->GetEntries());
444  for (Int_t n=0; n<nrows; n++) {
445  AliSegmentID *s=ca->LoadEntry(n);
446  Int_t sec,row;
447  digp->AdjustSectorRow(s->GetID(),sec,row);
448  AliTPCClustersRow &clrow = *ca->GetRow(sec,row);
449  Int_t ncl=clrow.GetArray()->GetEntriesFast();
450  while (ncl--) {
451  AliTPCcluster *c=(AliTPCcluster*)clrow[ncl];
452  Int_t lab=c->GetLabel(0);
453  if (lab<0) continue; //noise cluster
454  lab=TMath::Abs(lab);
455  if (sec>=digp->GetNInnerSector())
456  if (row==nrow_up-1 ) good[lab]|=0x1000;
457  if (sec>=digp->GetNInnerSector())
458  if (row==nrow_up-1-gap) good[lab]|=0x800;
459  good[lab]++;
460  }
461  ca->ClearRow(sec,row);
462  }
463  delete ca;
464  cf->Close();
465  }
466  break;
467  case 2:
468  {
469  sprintf(treeName,"TreeD_75x40_100x60_150x60_%d",event);
470  TD=(TTree*)fdigit->Get(treeName); // To be revised according to
471  // NewIO schema M.Kowalski
472  TD->GetBranch("Segment")->SetAddress(&digits);
473  count = new Int_t[np];
474  Int_t i;
475  for (i=0; i<np; i++) count[i]=0;
476  sectors_by_rows=(Int_t)TD->GetEntries();
477  for (i=0; i<sectors_by_rows; i++) {
478  if (!TD->GetEvent(i)) continue;
479  Int_t sec,row;
480  digp->AdjustSectorRow(digits->GetID(),sec,row);
481  digits->First();
482  digits->ExpandTrackBuffer();
483  do { //Many thanks to J.Chudoba who noticed this
484  Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
485  // Short_t dig = digits->GetDigit(it,ip);
486  Short_t dig = digits->CurrentDigit();
487 
488  Int_t idx0=digits->GetTrackIDFast(it,ip,0)-2;
489  Int_t idx1=digits->GetTrackIDFast(it,ip,1)-2;
490  Int_t idx2=digits->GetTrackIDFast(it,ip,2)-2;
491  if (idx0>=0 && dig>=zero && idx0<np ) count[idx0]+=1; //background events - higher track ID's
492  if (idx1>=0 && dig>=zero && idx1<np ) count[idx1]+=1;
493  if (idx2>=0 && dig>=zero && idx2<np ) count[idx2]+=1;
494  } while (digits->Next());
495  for (Int_t j=0; j<np; j++) {
496  if (count[j]>1) {
497  if (sec>=digp->GetNInnerSector())
498  if (row==nrow_up-1 ) good[j]|=0x4000;
499  if (sec>=digp->GetNInnerSector())
500  if (row==nrow_up-1-gap) good[j]|=0x1000;
501 
502  if (sec>=digp->GetNInnerSector())
503  if (row==nrow_up-1-shift) good[j]|=0x2000;
504  if (sec>=digp->GetNInnerSector())
505  if (row==nrow_up-1-gap-shift) good[j]|=0x800;
506  good[j]++;
507  }
508  count[j]=0;
509  }
510 
511  }
512  delete[] count;
513  delete TD; //Thanks to Mariana Bondila
514  }
515  break;
516  default:
517  cerr<<"Invalid TPC version !\n";
518  file->Close();
519  exit(7);
520  }
521 
523  //printf("\t %d \n",np);
524  for (Int_t i=0; i<np; i++) {
525  if ((good[i]&0x5000) != 0x5000)
526  if ((good[i]&0x2800) != 0x2800) continue;
527  if ((good[i]&0x7FF ) < good_number) continue;
528 
529  TParticle *p = (TParticle*)gAlice->Particle(i);
530 
531  if (p->Pt()<0.100) continue;
532  if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
533  // THIS IS GOOD IF YOU WANT SECONDARIES
534  Int_t j=p->GetFirstMother();
535  if (j>=0) {
536  TParticle *pp = (TParticle*)gAlice->Particle(j);
537  //if (!(pp->TestBit(kPrimaryCharged))) continue; //only one decay is allowed
538  }
539 
540  if(!(p->TestBit(kPrimaryCharged)))continue; // only primaries
541  // printf("1");
542 
543  gt[nt].fEventN=event;
544  gt[nt].lab=i;
545  gt[nt].code=p->GetPdgCode();
546  gt[nt].px=0.; gt[nt].py=0.; gt[nt].pz=0.;
547  gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
548  nt++;
549  if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
550  cerr<<np-i<<" \r";
551  }
552 
554  TTree *TH=gAlice->TreeH(); np=(Int_t)TH->GetEntries();
555  cout<<endl;
556  for (Int_t i=0; i<np; i++) {
557  TPC->ResetHits();
558  TH->GetEvent(i);
559  AliTPChit *phit = (AliTPChit*)TPC->FirstHit(-1);
560  for ( ; phit; phit=(AliTPChit*)TPC->NextHit() ) {
561  if (phit->fQ !=0. ) continue;
562 
563  Double_t px=phit->X(), py=phit->Y(), pz=phit->Z();
564 
565  if ((phit=(AliTPChit*)TPC->NextHit())==0) break;
566  if (phit->fQ != 0.) continue;
567 
568  Double_t x=phit->X(), y=phit->Y(), z=phit->Z();
569  if (TMath::Sqrt(x*x+y*y)>90.) continue;
570 
571  Int_t j, lab=phit->Track();
572  for (j=0; j<nt; j++) {if (gt[j].fEventN==event && gt[j].lab==lab) break;}
573  if (j==nt) continue;
574  //printf("1-");
575  // (px,py,pz) - in global coordinate system, (x,y,z) - in local !
576  gt[j].px=px; gt[j].py=py; gt[j].pz=pz;
577  Float_t cs,sn; digp->AdjustCosSin(phit->fSector,cs,sn);
578  gt[j].x = x*cs + y*sn;
579  gt[j].y =-x*sn + y*cs;
580  gt[j].z = z;
581  }
582  cerr<<np-i<<" \r";
583  }
584  //printf("\n%d\n",nt);
585  cout<<endl;
586  delete[] good;
587  } // /// loop on events
588  delete gAlice; gAlice=0;
589 
590  file->Close();
591  gBenchmark->Stop("AliTPCComparison2");
592  gBenchmark->Show("AliTPCComparison2");
593  return nt;
594 
595 }
596 
597 Int_t FindPrimaries(Int_t nparticles){
598 
599  // cuts:
600  Double_t vertcut = 0.001;
601  Double_t decacut = 3.;
602  Double_t timecut = 0.;
603  Int_t nprch1=0;
604  TParticle * part = gAlice->Particle(0);
605  Double_t xori = part->Vx();
606  Double_t yori = part->Vy();
607  Double_t zori = part->Vz();
608  for(Int_t iprim = 0; iprim<nparticles; iprim++){ //loop on tracks
609 
610  part = gAlice->Particle(iprim);
611  Double_t ptot=TMath::Sqrt(part->Px()*part->Px()+part->Py()*part->Py()+part->Pz()*part->Pz());
612  if (ptot<0.01) continue;
613  char *xxx=strstr(part->GetName(),"XXX");
614  if(xxx)continue;
615 
616  TParticlePDG *ppdg = part->GetPDG();
617  if(TMath::Abs(ppdg->Charge())!=3)continue; // only charged (no quarks)
618 
619  Double_t dist=TMath::Sqrt((part->Vx()-xori)*(part->Vx()-xori)+(part->Vy()-yori)*(part->Vy()-yori)+(part->Vz()-zori)*(part->Vz()-zori));
620  if(dist>vertcut)continue; // cut on the vertex
621 
622  if(part->T()>timecut)continue;
623 
624  //Double_t ptot=TMath::Sqrt(part->Px()*part->Px()+part->Py()*part->Py()+part->Pz()*part->Pz());
625  if(ptot==(TMath::Abs(part->Pz())))continue; // no beam particles
626 
627  Bool_t prmch = kTRUE; // candidate primary track
628  Int_t fidau=part->GetFirstDaughter(); // cut on daughters
629  Int_t lasdau=0;
630  Int_t ndau=0;
631  if(fidau>=0){
632  lasdau=part->GetLastDaughter();
633  ndau=lasdau-fidau+1;
634  }
635  if(ndau>0){
636  for(Int_t j=fidau;j<=lasdau;j++){
637  TParticle *dau=gAlice->Particle(j);
638  Double_t distd=TMath::Sqrt((dau->Vx()-xori)*(dau->Vx()-xori)+(dau->Vy()-yori)*(dau->Vy()-yori)+(dau->Vz()-zori)*(dau->Vz()-zori));
639  if(distd<decacut)prmch=kFALSE; // eliminate if the decay is near the vertex
640  }
641  }
642 
643  if(prmch){
644  nprch1++;
645  part->SetBit(kPrimaryCharged);
646  }
647  }
648 
649  return nprch1;
650 }
651 
Int_t GetZeroSup() const
Definition: AliTPCParam.h:357
printf("Chi2/npoints = %f\n", TMath::Sqrt(chi2/npoints))
AliSegmentID object.
Definition: AliSegmentID.h:15
TStyle * gStyle
Int_t CurrentDigit()
Definition: AliDigits.h:42
Manager and of geomety classes for set: TPC.
Definition: AliTPCParamSR.h:15
#define TObjArray
Int_t CurrentRow()
Definition: AliDigits.h:40
Int_t FindPrimaries(Int_t nparticles)
Manager and of geomety classes for set: TPC.
Definition: AliTPCParam.h:18
TBenchmark * gBenchmark
Int_t AliTPCComparison2(Int_t firstev=0, Int_t eventn=1)
AliTPCfastTrack * track
virtual Bool_t Next()
Definition: AliDigits.cxx:280
virtual Bool_t First()
Definition: AliDigits.cxx:271
Time Projection Chamber AliTPCClusterRow objects.
Int_t GetNRowUp() const
virtual void ExpandTrackBuffer()
Int_t GetID()
Definition: AliSegmentID.h:19
AliRun * gAlice
Int_t GetTrackIDFast(Int_t row, Int_t column, Int_t level)
Definition: AliSimDigits.h:61
TClonesArray * GetArray()
Definition: AliClusters.h:28
Bool_t AdjustSectorRow(Int_t index, Int_t &sector, Int_t &row) const
Int_t good_tracks(GoodTrackTPC *gt, Int_t max, Int_t firstev, Int_t eventn)
tagprimary
Int_t CurrentColumn()
Definition: AliDigits.h:41
void AdjustCosSin(Int_t isec, Float_t &cos, Float_t &sin) const
Definition: AliTPCParam.h:571
Int_t GetNInnerSector() const
Definition: AliTPCParam.h:257
Int_t GetNRowLow() const