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1 | /**************************************************************************** | |
2 | * Very important, delicate and rather obscure macro. * | |
3 | * * | |
4 | * Creates list of "trackable" tracks, * | |
5 | * calculates efficiency, resolutions etc. * | |
6 | * The ESD tracks must be in an appropriate state (kITSin or kITSrefit) * | |
7 | * * | |
8 | * Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch * | |
9 | ****************************************************************************/ | |
10 | ||
11 | #if !defined(__CINT__) || defined(__MAKECINT__) | |
12 | #include <TMath.h> | |
13 | #include <TError.h> | |
14 | #include <Riostream.h> | |
15 | #include <TH1F.h> | |
16 | #include <TH2F.h> | |
17 | #include <TTree.h> | |
18 | #include <TParticle.h> | |
19 | #include <TCanvas.h> | |
20 | #include <TLine.h> | |
21 | #include <TText.h> | |
22 | #include <TBenchmark.h> | |
23 | #include <TStyle.h> | |
24 | #include <TFile.h> | |
25 | #include <TROOT.h> | |
26 | ||
27 | #include "AliStack.h" | |
28 | #include "AliHeader.h" | |
29 | #include "AliTrackReference.h" | |
30 | #include "AliRunLoader.h" | |
31 | #include "AliRun.h" | |
32 | #include "AliESDEvent.h" | |
33 | #include "AliESDtrack.h" | |
34 | ||
35 | #include "AliITSRecPoint.h" | |
36 | #include "AliITSLoader.h" | |
37 | #endif | |
38 | ||
39 | Int_t GoodTracksITS(const Char_t *dir="."); | |
40 | ||
41 | extern AliRun *gAlice; | |
42 | extern TBenchmark *gBenchmark; | |
43 | extern TROOT *gROOT; | |
44 | ||
45 | static Int_t allgood=0; | |
46 | static Int_t allselected=0; | |
47 | static Int_t allfound=0; | |
48 | ||
49 | Int_t AliITSComparisonV2 | |
50 | (Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".") { | |
51 | gBenchmark->Start("AliITSComparisonV2"); | |
52 | ||
53 | ::Info("AliITSComparisonV2.C","Doing comparison..."); | |
54 | ||
55 | ||
56 | TH1F *hp=(TH1F*)gROOT->FindObject("hp"); | |
57 | if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.); | |
58 | hp->SetFillColor(4); | |
59 | ||
60 | TH1F *hl=(TH1F*)gROOT->FindObject("hl"); | |
61 | if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20); | |
62 | hl->SetFillColor(4); | |
63 | ||
64 | TH1F *hpt=(TH1F*)gROOT->FindObject("hpt"); | |
65 | if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.); | |
66 | hpt->SetFillColor(2); | |
67 | ||
68 | TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt"); | |
69 | if (!hmpt) | |
70 | hmpt=new TH1F("hmpt","Transverse impact parameter",30,-777,777); | |
71 | hmpt->SetFillColor(6); | |
72 | ||
73 | TH1F *hz=(TH1F*)gROOT->FindObject("hz"); | |
74 | if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777); | |
75 | ||
76 | ||
77 | ||
78 | TH1F *hgood=(TH1F*)gROOT->FindObject("hgood"); | |
79 | if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1); | |
80 | ||
81 | TH1F *hfound=(TH1F*)gROOT->FindObject("hfound"); | |
82 | if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1); | |
83 | ||
84 | TH1F *hfake=(TH1F*)gROOT->FindObject("hfake"); | |
85 | if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1); | |
86 | ||
87 | TH1F *hg=(TH1F*)gROOT->FindObject("hg"); | |
88 | if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1); | |
89 | hg->SetLineColor(4); hg->SetLineWidth(2); | |
90 | ||
91 | TH1F *hf=(TH1F*)gROOT->FindObject("hf"); | |
92 | if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1); | |
93 | hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2); | |
94 | ||
95 | TH1F *he=(TH1F*)gROOT->FindObject("he"); | |
96 | if (!he) | |
97 | he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,200.); | |
98 | ||
99 | TH2F *hep=(TH2F*)gROOT->FindObject("hep"); | |
100 | if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.); | |
101 | hep->SetMarkerStyle(8); | |
102 | hep->SetMarkerSize(0.4); | |
103 | ||
104 | ||
105 | Char_t fname[100]; | |
106 | sprintf(fname,"%s/GoodTracksITS.root",dir); | |
107 | ||
108 | TFile *refFile=TFile::Open(fname,"old"); | |
109 | if (!refFile || !refFile->IsOpen()) { | |
110 | ::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)..."); | |
111 | if (GoodTracksITS(dir)) { | |
112 | ::Error("AliITSComparisonV2.C","Can't generate the reference file !"); | |
113 | return 1; | |
114 | } | |
115 | } | |
116 | refFile=TFile::Open(fname,"old"); | |
117 | if (!refFile || !refFile->IsOpen()) { | |
118 | ::Error("AliITSComparisonV2.C","Can't open the reference file !"); | |
119 | return 1; | |
120 | } | |
121 | ||
122 | TTree *itsTree=(TTree*)refFile->Get("itsTree"); | |
123 | if (!itsTree) { | |
124 | ::Error("AliITSComparisonV2.C","Can't get the reference tree !"); | |
125 | return 2; | |
126 | } | |
127 | TBranch *branch=itsTree->GetBranch("ITS"); | |
128 | if (!branch) { | |
129 | ::Error("AliITSComparisonV2.C","Can't get the ITS branch !"); | |
130 | return 3; | |
131 | } | |
132 | TClonesArray dummy("AliTrackReference",1000), *refs=&dummy; | |
133 | branch->SetAddress(&refs); | |
134 | ||
135 | ||
136 | sprintf(fname,"%s/AliESDs.root",dir); | |
137 | TFile *ef=TFile::Open(fname); | |
138 | if ((!ef)||(!ef->IsOpen())) { | |
139 | sprintf(fname,"%s/AliESDits.root",dir); | |
140 | ef=TFile::Open(fname); | |
141 | if ((!ef)||(!ef->IsOpen())) { | |
142 | ::Error("AliITSComparisonV2.C","Can't open AliESDits.root !"); | |
143 | return 4; | |
144 | } | |
145 | } | |
146 | AliESDEvent* event = new AliESDEvent(); | |
147 | TTree* esdTree = (TTree*) ef->Get("esdTree"); | |
148 | if (!esdTree) { | |
149 | ::Error("AliITSComparison.C", "no ESD tree found"); | |
150 | return 6; | |
151 | } | |
152 | event->ReadFromTree(esdTree); | |
153 | ||
154 | ||
155 | //******* Loop over events ********* | |
156 | Int_t e=0; | |
157 | while (esdTree->GetEvent(e)) { | |
158 | cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n"; | |
159 | ||
160 | Int_t nentr=event->GetNumberOfTracks(); | |
161 | allfound+=nentr; | |
162 | ||
163 | if (itsTree->GetEvent(e++)==0) { | |
164 | cerr<<"No reconstructable tracks !\n"; | |
165 | continue; | |
166 | } | |
167 | ||
168 | Int_t ngood=refs->GetEntriesFast(); | |
169 | allgood+=ngood; | |
170 | ||
171 | const Int_t MAX=15000; | |
172 | Int_t notf[MAX], nnotf=0; | |
173 | Int_t fake[MAX], nfake=0; | |
174 | Int_t mult[MAX], numb[MAX], nmult=0; | |
175 | Int_t k; | |
176 | for (k=0; k<ngood; k++) { | |
177 | AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(k); | |
178 | Int_t lab=ref->Label(), tlab=-1; | |
179 | Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py()); | |
180 | ||
181 | if (ptg<ptcutl) continue; | |
182 | if (ptg>ptcuth) continue; | |
183 | ||
184 | allselected++; | |
185 | ||
186 | hgood->Fill(ptg); | |
187 | ||
188 | AliESDtrack *esd=0; | |
189 | Int_t cnt=0; | |
190 | for (Int_t i=0; i<nentr; i++) { | |
191 | AliESDtrack *t=event->GetTrack(i); | |
192 | UInt_t status=t->GetStatus(); | |
193 | ||
194 | if ((status&AliESDtrack::kITSrefit)==0) continue; | |
195 | ||
196 | Int_t lbl=t->GetLabel(); | |
197 | if (lab==TMath::Abs(lbl)) { | |
198 | if (cnt==0) {esd=t; tlab=lbl;} | |
199 | cnt++; | |
200 | } | |
201 | } | |
202 | if (cnt==0) { | |
203 | notf[nnotf++]=lab; | |
204 | continue; | |
205 | } else if (cnt>1){ | |
206 | mult[nmult]=lab; | |
207 | numb[nmult]=cnt; nmult++; | |
208 | } | |
209 | ||
210 | if (lab==tlab) hfound->Fill(ptg); | |
211 | else { | |
212 | fake[nfake++]=lab; | |
213 | hfake->Fill(ptg); | |
214 | } | |
215 | ||
216 | Double_t alpha=esd->GetAlpha(),xv,par[5]; | |
217 | esd->GetExternalParameters(xv,par); | |
218 | Float_t phi=TMath::ASin(par[2]) + alpha; | |
219 | if (phi<-TMath::Pi()) phi+=2*TMath::Pi(); | |
220 | if (phi>=TMath::Pi()) phi-=2*TMath::Pi(); | |
221 | Float_t lam=TMath::ATan(par[3]); | |
222 | Float_t pt_1=TMath::Abs(par[4]); | |
223 | ||
224 | Float_t phig=TMath::ATan2(ref->Py(),ref->Px()); | |
225 | hp->Fill((phi - phig)*1000.); | |
226 | ||
227 | Float_t lamg=TMath::ATan2(ref->Pz(),ptg); | |
228 | hl->Fill((lam - lamg)*1000.); | |
229 | ||
230 | Float_t d,z; esd->GetImpactParameters(d,z); | |
231 | hmpt->Fill(10000*d); | |
232 | hz->Fill(10000*z); | |
233 | ||
234 | hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.); | |
235 | ||
236 | Float_t mom=1./(pt_1*TMath::Cos(lam)); | |
237 | Float_t dedx=esd->GetITSsignal(); | |
238 | hep->Fill(mom,dedx,1.); | |
239 | ||
240 | Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG ! | |
241 | ||
242 | if (TMath::Abs(pdg)==211) //pions | |
243 | if (mom>0.4 && mom<0.5) he->Fill(dedx,1.); | |
244 | ||
245 | } | |
246 | ||
247 | cout<<"\nList of Not found tracks :\n"; | |
248 | for (k=0; k<nnotf; k++){ | |
249 | cout<<notf[k]<<"\t"; | |
250 | if ((k%9)==8) cout<<"\n"; | |
251 | } | |
252 | cout<<"\n\nList of fake tracks :\n"; | |
253 | for (k=0; k<nfake; k++){ | |
254 | cout<<fake[k]<<"\t"; | |
255 | if ((k%9)==8) cout<<"\n"; | |
256 | } | |
257 | cout<<"\n\nList of multiple found tracks :\n"; | |
258 | for (k=0; k<nmult; k++) { | |
259 | cout<<"id. "<<mult[k] | |
260 | <<" found - "<<numb[k]<<"times\n"; | |
261 | } | |
262 | cout<<endl; | |
263 | ||
264 | cout<<"Number of found tracks : "<<nentr<<endl; | |
265 | cout<<"Number of \"good\" tracks : "<<ngood<<endl; | |
266 | ||
267 | refs->Clear(); | |
268 | } //***** End of the loop over events | |
269 | ||
270 | delete event; | |
271 | delete esdTree; | |
272 | ef->Close(); | |
273 | ||
274 | delete itsTree; | |
275 | refFile->Close(); | |
276 | ||
277 | Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries(); | |
278 | if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n"; | |
279 | cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl; | |
280 | cout<<"Total number of found tracks ="<<allfound<<endl; | |
281 | cout<<"Total number of \"good\" tracks ="<<allgood<<endl; | |
282 | cout<<endl; | |
283 | ||
284 | gStyle->SetOptStat(111110); | |
285 | gStyle->SetOptFit(1); | |
286 | ||
287 | TCanvas *c1=new TCanvas("c1","",0,0,700,850); | |
288 | ||
289 | Int_t minc=33; | |
290 | ||
291 | TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw(); | |
292 | p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10); | |
293 | hp->SetFillColor(4); hp->SetXTitle("(mrad)"); | |
294 | if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd(); | |
295 | ||
296 | TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw(); | |
297 | p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10); | |
298 | hl->SetXTitle("(mrad)"); | |
299 | if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd(); | |
300 | ||
301 | TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw(); | |
302 | p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10); | |
303 | hpt->SetXTitle("(%)"); | |
304 | if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd(); | |
305 | ||
306 | TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw(); | |
307 | p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10); | |
308 | hmpt->SetXTitle("(micron)"); | |
309 | if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus"); | |
310 | hz->Draw("same"); c1->cd(); | |
311 | ||
312 | ||
313 | TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd(); | |
314 | p5->SetFillColor(41); p5->SetFrameFillColor(10); | |
315 | hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2(); | |
316 | hg->Divide(hfound,hgood,1,1.,"b"); | |
317 | hf->Divide(hfake,hgood,1,1.,"b"); | |
318 | hg->SetMaximum(1.4); | |
319 | hg->SetYTitle("Tracking efficiency"); | |
320 | hg->SetXTitle("Pt (GeV/c)"); | |
321 | hg->Draw(); | |
322 | ||
323 | TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4); | |
324 | line1->Draw("same"); | |
325 | TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4); | |
326 | line2->Draw("same"); | |
327 | ||
328 | hf->SetFillColor(1); | |
329 | hf->SetFillStyle(3013); | |
330 | hf->SetLineColor(2); | |
331 | hf->SetLineWidth(2); | |
332 | hf->Draw("histsame"); | |
333 | TText *text = new TText(0.461176,0.248448,"Fake tracks"); | |
334 | text->SetTextSize(0.05); | |
335 | text->Draw(); | |
336 | text = new TText(0.453919,1.11408,"Good tracks"); | |
337 | text->SetTextSize(0.05); | |
338 | text->Draw(); | |
339 | ||
340 | TCanvas *c2=new TCanvas("c2","",320,32,530,590); | |
341 | TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw(); | |
342 | p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10); | |
343 | he->SetFillColor(2); he->SetFillStyle(3005); | |
344 | he->SetXTitle("Arbitrary Units"); | |
345 | if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd(); | |
346 | ||
347 | TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw(); | |
348 | p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10); | |
349 | hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)"); | |
350 | hep->Draw(); c1->cd(); | |
351 | ||
352 | TFile fc("AliITSComparisonV2.root","RECREATE"); | |
353 | c1->Write(); | |
354 | c2->Write(); | |
355 | fc.Close(); | |
356 | ||
357 | gBenchmark->Stop("AliITSComparisonV2"); | |
358 | gBenchmark->Show("AliITSComparisonV2"); | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | ||
364 | ||
365 | Int_t GoodTracksITS(const Char_t *dir) { | |
366 | if (gAlice) { | |
367 | delete AliRunLoader::Instance(); | |
368 | delete gAlice;//if everything was OK here it is already NULL | |
369 | gAlice = 0x0; | |
370 | } | |
371 | ||
372 | Char_t fname[100]; | |
373 | sprintf(fname,"%s/galice.root",dir); | |
374 | ||
375 | AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON"); | |
376 | if (!rl) { | |
377 | ::Error("GoodTracksITS","Can't start session !"); | |
378 | return 1; | |
379 | } | |
380 | ||
381 | rl->LoadgAlice(); | |
382 | rl->LoadHeader(); | |
383 | rl->LoadKinematics(); | |
384 | ||
385 | AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader"); | |
386 | if (itsl == 0x0) { | |
387 | ::Error("GoodTracksITS","Can not find the ITSLoader"); | |
388 | delete rl; | |
389 | return 4; | |
390 | } | |
391 | itsl->LoadRecPoints(); | |
392 | ||
393 | ||
394 | Int_t nev=rl->GetNumberOfEvents(); | |
395 | ::Info("GoodTracksITS","Number of events : %d\n",nev); | |
396 | ||
397 | sprintf(fname,"%s/GoodTracksTPC.root",dir); | |
398 | TFile *tpcFile=TFile::Open(fname); | |
399 | if ((!tpcFile)||(!tpcFile->IsOpen())) { | |
400 | ::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !"); | |
401 | delete rl; | |
402 | return 5; | |
403 | } | |
404 | TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum; | |
405 | TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree"); | |
406 | if (!tpcTree) { | |
407 | ::Error("GoodTracksITS","Can't get the TPC reference tree !"); | |
408 | delete rl; | |
409 | return 6; | |
410 | } | |
411 | TBranch *tpcBranch=tpcTree->GetBranch("TPC"); | |
412 | if (!tpcBranch) { | |
413 | ::Error("GoodTracksITS","Can't get the TPC reference branch !"); | |
414 | delete rl; | |
415 | return 7; | |
416 | } | |
417 | tpcBranch->SetAddress(&tpcRefs); | |
418 | ||
419 | sprintf(fname,"%s/GoodTracksITS.root",dir); | |
420 | TFile *itsFile=TFile::Open(fname,"recreate"); | |
421 | TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2; | |
422 | TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks"); | |
423 | itsTree.Branch("ITS",&itsRefs); | |
424 | ||
425 | //******** Loop over generated events | |
426 | for (Int_t e=0; e<nev; e++) { | |
427 | Int_t k; | |
428 | ||
429 | rl->GetEvent(e); itsFile->cd(); | |
430 | ||
431 | Int_t np = rl->GetHeader()->GetNtrack(); | |
432 | cout<<"Event "<<e<<" Number of particles: "<<np<<endl; | |
433 | ||
434 | //******** Fill the "good" masks | |
435 | Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0; | |
436 | ||
437 | TTree *cTree=itsl->TreeR(); | |
438 | if (!cTree) { | |
439 | ::Error("GoodTracksITS","Can't get the cluster tree !"); | |
440 | delete rl; | |
441 | return 8; | |
442 | } | |
443 | TBranch *branch=cTree->GetBranch("ITSRecPoints"); | |
444 | if (!branch) { | |
445 | ::Error("GoodTracksITS","Can't get the clusters branch !"); | |
446 | delete rl; | |
447 | return 9; | |
448 | } | |
449 | TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy; | |
450 | branch->SetAddress(&clusters); | |
451 | ||
452 | Int_t entr=(Int_t)cTree->GetEntries(); | |
453 | for (k=0; k<entr; k++) { | |
454 | cTree->GetEvent(k); | |
455 | Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue; | |
456 | while (ncl--) { | |
457 | AliITSRecPoint *pnt=(AliITSRecPoint*)clusters->UncheckedAt(ncl); | |
458 | ||
459 | Int_t lay=pnt->GetLayer(); | |
460 | if (lay<0 || lay>5) { | |
461 | ::Error("GoodTracksITS","Wrong layer !"); | |
462 | delete rl; | |
463 | return 10; | |
464 | } | |
465 | ||
466 | Int_t l0=pnt->GetLabel(0); | |
467 | if (l0>=np) { | |
468 | // cerr<<"Wrong label: "<<l0<<endl; | |
469 | continue; | |
470 | } | |
471 | Int_t l1=pnt->GetLabel(1); | |
472 | if (l1>=np) { | |
473 | // cerr<<"Wrong label: "<<l1<<endl; | |
474 | continue; | |
475 | } | |
476 | Int_t l2=pnt->GetLabel(2); | |
477 | if (l2>=np) { | |
478 | // cerr<<"Wrong label: "<<l2<<endl; | |
479 | continue; | |
480 | } | |
481 | Int_t mask=1<<lay; | |
482 | if (l0>=0) good[l0]|=mask; | |
483 | if (l1>=0) good[l1]|=mask; | |
484 | if (l2>=0) good[l2]|=mask; | |
485 | } | |
486 | clusters->Clear(); | |
487 | } | |
488 | ||
489 | ||
490 | //****** select tracks which are "good" enough | |
491 | AliStack* stack = rl->Stack(); | |
492 | ||
493 | tpcTree->GetEvent(e); | |
494 | Int_t nk=tpcRefs->GetEntriesFast(); | |
495 | Int_t nt=0; | |
496 | for (k=0; k<nk; k++) { | |
497 | AliTrackReference *tpcRef=(AliTrackReference *)tpcRefs->UncheckedAt(k); | |
498 | Int_t lab=tpcRef->Label(); | |
499 | if (good[lab] != 0x3F) continue; | |
500 | TParticle *p = (TParticle*)stack->Particle(lab); | |
501 | if (p == 0x0) { | |
502 | cerr<<"Can not get particle "<<lab<<endl; | |
503 | continue; | |
504 | } | |
505 | ||
506 | AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference(*tpcRef); | |
507 | ref->SetMomentum(p->Px(),p->Py(),p->Pz()); | |
508 | ref->SetPosition(p->Vx(),p->Vy(),p->Vz()); | |
509 | nt++; | |
510 | } | |
511 | tpcRefs->Clear(); | |
512 | ||
513 | itsTree.Fill(); | |
514 | itsRefs->Clear(); | |
515 | ||
516 | delete[] good; | |
517 | ||
518 | } //*** end of the loop over generated events | |
519 | ||
520 | itsTree.Write(); | |
521 | itsFile->Close(); | |
522 | ||
523 | delete tpcTree; | |
524 | tpcFile->Close(); | |
525 | ||
526 | delete rl; | |
527 | return 0; | |
528 | } | |
529 | ||
530 |