doxy: TPC/stressTest/testSparse converted
[u/mrichter/AliRoot.git] / TPC / AliTPCComparison2.C
CommitLineData
a7a1dd76 1/// \file AliTPCComparison.C
2/// \brief Very important, delicate and rather obscure macro
3///
4/// Creates list of "trackable" tracks, sorts tracks for matching with the ITS,
5/// calculates efficiency, resolutions etc.
6///
7/// There is a possibility to run this macro over several events.
8///
9/// \author I.Belikov, CERN, Jouri.Belikov@cern.ch, M.Ivanov, GSI, m.ivanov@gsi.de
6e9ab565 10
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>
6e9ab565 26#include <alles.h>
27#endif
28
29/*
30 multievent comparison of reconstructed tracks with "exact tracks"
31 from silulation
32
33*/
34
35
36struct 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
44enum tagprimary {kPrimaryCharged = 0x4000};
45
46Int_t good_tracks(GoodTrackTPC *gt, Int_t max, Int_t firstev, Int_t eventn);
47
48Int_t FindPrimaries(Int_t nparticles);
49
50Int_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");
3a4edebe 57// \file AliTPCComparison2.C
58// if(gAlice)delete gAlice; COMMENTED BECAUSE OF A BUG (IN COMPILED MODE)
a7a1dd76 59
6e9ab565 60 gAlice = (AliRun*)inkin->Get("gAlice");
61 cout<<"AliRun object found on file "<<gAlice<<endl;
c84a5e9e 62 AliKalmanTrack::SetFieldMap(gAlice->Field());
6e9ab565 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;}
7a09f434 78 digp= (AliTPCParam*)cf->Get("75x40_100x60_150x60");
6e9ab565 79 if (!digp) { cerr<<"TPC parameters have not been found !\n"; return 2; }
80 }
3a4edebe 81
6e9ab565 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;
6e9ab565 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);
6e9ab565 116 tarray.AddLast(iotrack);
117 }
118 eventptr[event+1] = nentr; //store end of the event
6e9ab565 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";
7a09f434 135 //cout<<ngood<<"\r";
6e9ab565 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);
7a09f434 146 printf("Goood %d\n", ngood);
6e9ab565 147 ofstream out("good_tracks_tpc");
6e9ab565 148 if (out) {
149 cout<<"File good_tracks_tpc opened\n";
150 for (Int_t ngd=0; ngd<ngood; ngd++) {
6e9ab565 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;
6e9ab565 154 }
155 } else cerr<<"Can not open file (good_tracks_tpc) !\n";
7a09f434 156 out<<flush;
6e9ab565 157 out.close();
7a09f434 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;
6e9ab565 172 out2.close();
7a09f434 173
6e9ab565 174 }
175 cerr<<"Number of good tracks : "<<ngood<<endl;
7a09f434 176 cout<<"Number of good tracks : "<<ngood<<endl;
6e9ab565 177 if(ngood==0)return 5;
7a09f434 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);
6e9ab565 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;
7a09f434 245 if (!track) continue;
246 // printf("Track =%p\n",track);
6e9ab565 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.);
7a09f434 263 }
264 //else
265 {
6e9ab565 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";
7a09f434 303 if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
6e9ab565 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
380Int_t good_tracks(GoodTrackTPC *gt, Int_t max, Int_t firstev, Int_t eventn) {
3a4edebe 381 /// eventn - number of events in file
6e9ab565 382
7a09f434 383 TFile *file=TFile::Open("galice.root");
6e9ab565 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 }
1c53abe2 390
391 TFile *fdigit = TFile::Open("digits.root");
392 file->cd();
6e9ab565 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");
7a09f434 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
6e9ab565 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 {
7a09f434 469 sprintf(treeName,"TreeD_75x40_100x60_150x60_%d",event);
88cb7938 470 TD=(TTree*)fdigit->Get(treeName); // To be revised according to
471 // NewIO schema M.Kowalski
6e9ab565 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();
1c53abe2 482 digits->ExpandTrackBuffer();
6e9ab565 483 do { //Many thanks to J.Chudoba who noticed this
484 Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
1c53abe2 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;
6e9ab565 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
522 /** select tracks which are "good" enough **/
7a09f434 523 //printf("\t %d \n",np);
6e9ab565 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
7a09f434 540 if(!(p->TestBit(kPrimaryCharged)))continue; // only primaries
541 // printf("1");
6e9ab565 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.;
527abbe9 547 gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
6e9ab565 548 nt++;
549 if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
550 cerr<<np-i<<" \r";
551 }
552
553 /** check if there is also information at the entrance of the TPC **/
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;
7a09f434 574 //printf("1-");
6e9ab565 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 }
7a09f434 584 //printf("\n%d\n",nt);
6e9ab565 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
597Int_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);
1c53abe2 611 Double_t ptot=TMath::Sqrt(part->Px()*part->Px()+part->Py()*part->Py()+part->Pz()*part->Pz());
612 if (ptot<0.01) continue;
6e9ab565 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
1c53abe2 624 //Double_t ptot=TMath::Sqrt(part->Px()*part->Px()+part->Py()*part->Py()+part->Pz()*part->Pz());
6e9ab565 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