* *
* Creates list of "trackable" tracks, *
* calculates efficiency, resolutions etc. *
- * The ESD tracks must be in an appropriate state (kTPCin or kTPCrefit) *
+ * There is a possibility to run this macro over several events. *
* *
* Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
* with several nice improvements by: M.Ivanov, GSI, m.ivanov@gsi.de *
#include <TBenchmark.h>
#include <TStyle.h>
#include <TKey.h>
+ #include <TROOT.h>
#include "AliStack.h"
#include "AliHeader.h"
#include "AliTPCParamSR.h"
#include "AliTPCClustersArray.h"
#include "AliTPCClustersRow.h"
- #include "AliTPCtracker.h"
+ #include "AliTPCcluster.h"
#include "AliTPCLoader.h"
#endif
extern AliRun *gAlice;
extern TBenchmark *gBenchmark;
+extern TROOT *gROOT;
-Int_t AliTPCComparison() {
+Int_t AliTPCComparison(const Char_t *dir=".") {
gBenchmark->Start("AliTPCComparison");
::Info("AliTPCComparison.C","Doing comparison...");
gAlice = 0x0;
}
- AliRunLoader *rl = AliRunLoader::Open("galice.root","COMPARISON");
+ Char_t fname[100];
+ sprintf(fname,"%s/galice.root",dir);
+
+ AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
if (!rl) {
::Fatal("AliTPCComparison.C","Can't start session !");
}
- rl->LoadgAlice();
- if (rl->GetAliRun())
- AliKalmanTrack::SetConvConst(
- 1000/0.299792458/rl->GetAliRun()->Field()->SolenoidField()
- );
- else {
- ::Fatal("AliTPCComparison.C","Can't get AliRun !");
- }
- //rl->UnloadgAlice();
-
-
/* Generate a list of "good" tracks */
const Int_t MAX=20000;
GoodTrackTPC gt[MAX];
Int_t ngood=0;
- ifstream in("good_tracks_tpc");
+ sprintf(fname,"%s/good_tracks_tpc",dir);
+ ifstream in(fname);
if (in) {
::Info("AliTPCComparison.C","Reading good tracks...");
while (in>>gt[ngood].lab>>gt[ngood].code>>
::Info
("AliTPCComparison","Marking good tracks (this will take a while)...");
ngood=good_tracks_tpc(gt,MAX,"COMPARISON");
- ofstream out("good_tracks_tpc");
+ ofstream out(fname);
if (out) {
for (Int_t ngd=0; ngd<ngood; ngd++)
out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
out.close();
}
- Int_t i=0; TObjArray tarray(MAX);
+ AliESD *event=0;
{ /*Load tracks*/
- TFile *ef=TFile::Open("AliESDtpc.root");
+ sprintf(fname,"%s/AliESDs.root",dir);
+ TFile *ef=TFile::Open(fname);
if ((!ef)||(!ef->IsOpen())) {
- ::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
+ sprintf(fname,"%s/AliESDtpc.root",dir);
+ ef=TFile::Open(fname);
+ if ((!ef)||(!ef->IsOpen()))
+ ::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
}
TKey *key=0;
TIter next(ef->GetListOfKeys());
- if ((key=(TKey*)next())!=0) {
- AliESD *event=(AliESD*)key->ReadObj();
- Int_t ntrk=event->GetNumberOfTracks();
- for (Int_t i=0; i<ntrk; i++) {
- AliESDtrack *t=event->GetTrack(i);
- if ((t->GetStatus()&AliESDtrack::kTPCin)==0) continue;
- AliTPCtrack *iotrack=new AliTPCtrack(*t);
- tarray.AddLast(iotrack);
- }
- delete event;
- }
+ if ((key=(TKey*)next())!=0) event=(AliESD*)key->ReadObj();
ef->Close();
}
- Int_t nentr=tarray.GetEntriesFast();
-
- TH1F *hp=new TH1F("hp","PHI resolution",50,-20.,20.); hp->SetFillColor(4);
- TH1F *hl=new TH1F("hl","LAMBDA resolution",50,-20,20);hl->SetFillColor(4);
- TH1F *hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
- hpt->SetFillColor(2);
- TH1F *hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
+ Int_t nentr=event->GetNumberOfTracks();
+
+ TH1F *hp=(TH1F*)gROOT->FindObject("hp");
+ if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
+ hp->SetFillColor(4);
+
+ TH1F *hl=(TH1F*)gROOT->FindObject("hl");
+ if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
+ hl->SetFillColor(4);
+
+ TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
+ if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
+ hpt->SetFillColor(2);
+
+ TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
+ if (!hmpt)
+ hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
hmpt->SetFillColor(6);
- TH1F *hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
- TH1F *hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
- TH1F *hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
- TH1F *hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
+
+
+ TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
+ if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
+
+ TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
+ if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
+
+ TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
+ if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
+
+ TH1F *hg=(TH1F*)gROOT->FindObject("hg");
+ if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
hg->SetLineColor(4); hg->SetLineWidth(2);
- TH1F *hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
+
+ TH1F *hf=(TH1F*)gROOT->FindObject("hf");
+ if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
- TH1F *he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
- TH2F *hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
+ TH1F *he=(TH1F*)gROOT->FindObject("he");
+ if (!he)
+ he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
+
+ TH2F *hep=(TH2F*)gROOT->FindObject("hep");
+ if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
hep->SetMarkerStyle(8);
hep->SetMarkerSize(0.4);
Int_t track_fake[MAX], itrack_fake=0;
Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;
+ Int_t i;
while (ngood--) {
Int_t lab=gt[ngood].lab,tlab=-1;
Float_t ptg=
hgood->Fill(ptg);
- AliTPCtrack *track=0;
+ AliESDtrack *track=0;
for (i=0; i<nentr; i++) {
- track=(AliTPCtrack*)tarray.UncheckedAt(i);
+ track=event->GetTrack(i);
tlab=track->GetLabel();
if (lab==TMath::Abs(tlab)) break;
}
//MI change - addition
Int_t micount=0;
Int_t mi;
- AliTPCtrack * mitrack;
+ AliESDtrack * mitrack;
for (mi=0; mi<nentr; mi++) {
- mitrack=(AliTPCtrack*)tarray.UncheckedAt(mi);
+ mitrack=event->GetTrack(mi);
if (lab==TMath::Abs(mitrack->GetLabel())) micount++;
}
if (micount>1) {
itrack_multifound++;
}
- Double_t xk=gt[ngood].x;
- track->PropagateTo(xk);
-
if (lab==tlab) hfound->Fill(ptg);
else {
track_fake[itrack_fake++]=lab;
hfake->Fill(ptg);
}
- Double_t par[5]; track->GetExternalParameters(xk,par);
- Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
+ Double_t pxpypz[3]; track->GetInnerPxPyPz(pxpypz);
+ Float_t phi=TMath::ATan2(pxpypz[1],pxpypz[0]);
if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
- Float_t lam=TMath::ATan(par[3]);
- Float_t pt_1=TMath::Abs(par[4]);
+ Double_t pt=TMath::Sqrt(pxpypz[0]*pxpypz[0]+pxpypz[1]*pxpypz[1]);
+ Float_t lam=TMath::ATan2(pxpypz[2],pt);
+ Float_t pt_1=1/pt;
if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
}
- Float_t mom=1./(pt_1*TMath::Cos(lam));
- Float_t dedx=track->GetdEdx();
+ Float_t mom=pt/TMath::Cos(lam);
+ Float_t dedx=track->GetTPCsignal();
hep->Fill(mom,dedx,1.);
if (TMath::Abs(gt[ngood].code)==211)
if (mom>0.4 && mom<0.5) {
if (p->Pt()<0.100) continue;
if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
+ Double_t vx=p->Vx(),vy=p->Vy();
+ if (TMath::Sqrt(vx*vx+vy*vy)>3.5) continue;
+
+ /*
Int_t j=p->GetFirstMother();
if (j>=0) {
TParticle *pp = (TParticle*)stack->Particle(j);
cerr<<"Can not get particle "<<j<<endl;
continue;
}
- if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
- /* for cascade hyperons only
+ //if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
+ // for cascade hyperons only
Int_t jj=pp->GetFirstMother();
if (jj>=0) {
TParticle *ppp = (TParticle*)stack->Particle(jj);
if (ppp->GetFirstMother()>=0) continue;//two decays are allowed
}
- */
+
}
+ */
gt[nt].lab=i;
gt[nt].code=p->GetPdgCode();