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//////////////////////////////////////////////////////////////// |
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// |
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// Histogram set for tracker-efficiency study. |
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// |
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// It contains the functions: |
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// |
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// - CreateHistos() |
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// - RetrieveHistos() |
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// - FillHistos(PamLevel2* event) |
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// - Save Histos() |
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// |
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// Usage (example): |
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// [] .L My-histo-set-macro.C+ |
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// [] .L My-selection.C+ |
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// [] .L Loop.C+ |
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// [] Loop("data-dir/","file-list.txt",100000,"+ALL fillTree fillHistos","output-file.root") |
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// |
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//////////////////////////////////////////////////////////////// |
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|
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#if !defined(__CINT__) || defined(__MAKECINT__) |
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|
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#include <TString.h> |
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#include <TH1F.h> |
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#include <TH2F.h> |
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#include <TMath.h> |
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#include <TLine.h> |
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#include <TPolyMarker.h> |
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#include <TSelector.h> |
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#include <TFile.h> |
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|
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#include <stdlib.h> |
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#include <iostream> |
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using namespace std; |
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|
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#include <PamLevel2.h> |
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#include <CaloAxis.h> |
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|
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#endif |
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//====================== |
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// HITOGRAMS declaration |
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//====================== |
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|
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TH2F *hchi2def; |
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TH2F *hchi2rig; |
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TH2F *hdedxtofvsdedxtrk; |
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TH2F *hdedxtrkvsrig ; |
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TH2F *hdedxtofvsrig ; |
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TH2F *hbetavsrig ; |
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TH2F *hdedxtrkvsdef ; |
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TH2F *hbetavsdef ; |
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TH2F *hbetavsdef2 ; |
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|
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TH1F *herrdef; |
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TH1F *herrx[6]; |
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TH1F *herry[6]; |
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|
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TH1F *hdef ; |
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TH1F *hrig1 ; |
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TH1F *hrig2 ; |
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TH1F *hen1 ; |
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TH1F *hen2 ; |
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|
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|
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Int_t tot=0; |
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Int_t sel[]={0,0,0,0,0,0,0,0}; |
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|
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//=============================================================== |
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// Get ToF dE/dx |
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//=============================================================== |
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Float_t GetdEdx( PamTrack *trk ){ |
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Float_t dedx = 0.; |
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Int_t nval=0; |
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Bool_t ISNULL = false; |
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for (Int_t i=0; i<trk->npmtadc; i++){ |
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if(trk->dedx[i] == 0)ISNULL=true; |
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dedx += (trk->dedx).At(i)*(Int_t)(!ISNULL); |
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nval += (Int_t)(!ISNULL); |
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}; |
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// |
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if(nval)dedx=dedx/nval; |
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// cout <<" -- dedx "<<dedx<<endl; |
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return(dedx); |
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} |
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float GetZ(float beta, float dedx){ |
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|
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int nspec=2; |
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float p0[]={0.904,3.373}; |
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float p1[]={0.295,2.756}; |
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float zz[]={1.,4.}; |
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|
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if(beta>1)beta=1; |
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float f0 = p0[0]/beta+p1[0]; |
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float f1 = p0[1]/beta+p1[1]; |
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float z0 = zz[0]; |
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float z1 = zz[1]; |
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float aa = (z0-z1)/(f0-f1); |
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float bb = -aa*f0+z0; |
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if( (bb+aa*dedx)==0 )return 0; |
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return sqrt(bb+aa*dedx); |
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|
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} |
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|
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|
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//=============================================================== |
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// Create histograms |
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//=============================================================== |
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void CreateHistos( TFile* outf ){ |
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|
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gROOT->cd();//create histos in memory |
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|
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TString hid; |
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TString title; |
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//=========================================== |
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// rigidity binning |
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Int_t nbins = 200; |
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Float_t rmin = .1; |
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Float_t rmax = 1000.; |
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Float_t dr = (log10(rmax)-log10(rmin))/nbins; |
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TArrayD* arr = new TArrayD(nbins+1); |
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arr->AddAt((Double_t)rmin,0); |
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for(Int_t i=1; i<=nbins; i++){ |
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Double_t previous = arr->At(i-1); |
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Double_t value=0; |
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value = (Double_t) pow(10,log10((Float_t)previous)+dr); |
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arr->AddAt(value,i); |
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}; |
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Double_t *rbinpt = arr->GetArray(); |
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//=========================================== |
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|
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hchi2def = new TH2F("hchi2def","(chi**2)**0.25 vs deflection",100,0.,2.5,200,0.,10.); |
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hchi2rig = new TH2F("hchi2rig","#chi^{2} vs R",nbins,rbinpt,1000,0.,500.); |
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hdedxtofvsdedxtrk = new TH2F("hdedxtofvsdedxtrk","dE/dx (ToF-average) vs dE/dx (trk-average)",600,0.,40.,600,0.,40.); |
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hdedxtrkvsrig = new TH2F("hdedxtrkvsrig","dE/dx (Trk-average) vs R",nbins,rbinpt,600,0.,40.); |
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hdedxtofvsrig = new TH2F("hdedxtofvsrig","dE/dx (ToF-average) vs R",nbins,rbinpt,600,0.,40.); |
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hbetavsrig = new TH2F("hbetavsrig","beta vs R",nbins,rbinpt,200,0.4,1.5); |
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hrig1 = new TH1F("hrig1","Rigidity distribution Z=1",nbins,rbinpt); |
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hrig2 = new TH1F("hrig2","Rigidity distribution Z=2",nbins,rbinpt); |
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hen1 = new TH1F("hen1","Kin.Energy per nucleon Z=1",nbins,rbinpt); |
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hen2 = new TH1F("hen2","Kin.Energy per nucleon Z=2",nbins,rbinpt); |
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|
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hdedxtrkvsdef = new TH2F("hdedxtrkvsdef","dE/dx (Trk-average) vs deflection",500,-10.,10.,600,0.,40.); |
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hbetavsdef = new TH2F("hbetavsdef","beta vs deflection",500,-10.,10.,200,0.4,1.5); |
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hbetavsdef2 = new TH2F("hbetavsdef2","beta vs deflection (Z=1)",500,-10.,10.,200,0.4,1.5); |
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hdef = new TH1F("hdef","Deflection distribution",5000,-2.5,2.5); |
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|
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herrdef = new TH1F("herrdef","Deflection error",1000,0.,0.01); |
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|
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for(Int_t ip=0; ip<6; ip++){ |
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hid.Form("herrx%i",ip); |
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title = ""; title.Form("Spatial resolution - plane %i (x)",ip); |
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herrx[ip] = new TH1F(hid.Data(),title.Data(),500,0.,0.005); |
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hid.Form("herry%i",ip); |
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title = ""; title.Form("Spatial resolution - plane %i (y)",ip); |
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herry[ip] = new TH1F(hid.Data(),title.Data(),500,0.,0.005); |
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} |
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|
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} |
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//=============================================================== |
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// Retrieve histograms |
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//=============================================================== |
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void RetrieveHistos(){ |
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|
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TString hid; |
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|
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hchi2def = dynamic_cast<TH2F*>(gDirectory->FindObject("hchi2def")); |
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hchi2rig = dynamic_cast<TH2F*>(gDirectory->FindObject("hchi2rig")); |
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hdedxtofvsdedxtrk = dynamic_cast<TH2F*>(gDirectory->FindObject("hdedxtofvsdedxtrk")); |
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hdedxtrkvsrig = dynamic_cast<TH2F*>(gDirectory->FindObject("hdedxtrkvsrig")); |
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hdedxtofvsrig = dynamic_cast<TH2F*>(gDirectory->FindObject("hdedxtofvsrig")); |
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hbetavsrig = dynamic_cast<TH2F*>(gDirectory->FindObject("hbetavsrig")); |
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hdedxtrkvsdef = dynamic_cast<TH2F*>(gDirectory->FindObject("hdedxtrkvsdef")); |
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hbetavsdef = dynamic_cast<TH2F*>(gDirectory->FindObject("hbetavsdef")); |
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hbetavsdef2 = dynamic_cast<TH2F*>(gDirectory->FindObject("hbetavsdef2")); |
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hdef = dynamic_cast<TH1F*>(gDirectory->FindObject("hdef")); |
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hrig1 = dynamic_cast<TH1F*>(gDirectory->FindObject("hrig1")); |
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hrig2 = dynamic_cast<TH1F*>(gDirectory->FindObject("hrig2")); |
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hen1 = dynamic_cast<TH1F*>(gDirectory->FindObject("hen1")); |
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hen2 = dynamic_cast<TH1F*>(gDirectory->FindObject("hen2")); |
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herrdef = dynamic_cast<TH1F*>(gDirectory->FindObject("herrdef")); |
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for(Int_t ip=0; ip<6; ip++){ |
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hid.Form("herrx%i",ip); |
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herrx[ip] = dynamic_cast<TH1F*>(gDirectory->FindObject(hid.Data())); |
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hid.Form("herry%i",ip); |
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herry[ip] = dynamic_cast<TH1F*>(gDirectory->FindObject(hid.Data())); |
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} |
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} |
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//=============================================================== |
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// Fill histograms (called event-by-event) |
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//=============================================================== |
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|
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void FillHistos( PamLevel2* event ){ |
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// ---------------------------------- |
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// retrieve histos |
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// ---------------------------------- |
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RetrieveHistos(); |
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|
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// ---------------------------------- |
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// single-track events |
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// ---------------------------------- |
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float beta = 0; |
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float dedxtof = 0; |
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float dedxtrk = 0; |
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float rigidity = 0; |
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float deflection = 0; |
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float chi2 = 0; |
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float errdef = 0.; |
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float errx[] = {10.,10.,10.,10.,10.,10.}; |
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float erry[] = {10.,10.,10.,10.,10.,10.}; |
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|
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tot++; |
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|
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if( event->GetNTracks()==0 ) return; |
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PamTrack *track = event->GetTrack(0); |
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//------------------------------ |
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// track selection |
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//------------------------------ |
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if( |
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true |
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){ |
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|
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sel[0]++; |
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//------------------- |
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// Calo variables |
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//------------------- |
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|
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|
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//------------------- |
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// ToF variables |
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//------------------- |
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beta = track->beta[12]; |
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// dedxtof = GetdEdx(track); |
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|
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//------------------- |
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// tracker variables |
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//------------------- |
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dedxtrk = track->GetDEDX()/1.3; //<<<ATTENZIONE TEMPORANEO!!!! |
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rigidity = track->GetRigidity(); |
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deflection = track->GetDeflection(); |
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chi2 = track->chi2; |
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errdef = sqrt(track->coval[4][4]); |
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for(Int_t ip=0; ip<6; ip++){ |
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if(track->XGood(ip))errx[ip]=track->resx[ip]; |
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if(track->YGood(ip))erry[ip]=track->resy[ip]; |
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} |
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|
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//------------------- |
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// chi2 selection |
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//------------------- |
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hchi2def->Fill( fabs(deflection), pow((double)chi2,0.25) ); |
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hchi2rig->Fill( rigidity, chi2 ); |
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if(pow((double)chi2,0.25) > (2.5+1.85*fabs(deflection)) )return; |
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sel[1]++; |
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|
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// hdedxtofvsdedxtrk->Fill(dedxtrk,dedxtof); |
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hdedxtrkvsrig->Fill(rigidity,dedxtrk); |
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// hdedxtofvsrig->Fill(rigidity,dedxtof); |
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hbetavsrig->Fill(rigidity,beta); |
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|
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hdedxtrkvsdef->Fill(deflection,dedxtrk); |
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hbetavsdef->Fill(deflection,beta); |
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|
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//------------------------ |
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// rough charge selection |
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//------------------------ |
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if(dedxtrk > (6.+16./(rigidity*rigidity)))return; |
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//-------- |
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// helium |
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//-------- |
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if( dedxtrk > (2.8+3.3/(rigidity*rigidity)) && deflection>0 ){ |
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sel[5]++; |
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hrig2->Fill(rigidity); |
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float m=3.725; |
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float a=4.; |
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float z=2.; |
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float en=(sqrt( (z*rigidity)*(z*rigidity)+m*m )-m)/a; |
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hen2->Fill(en); |
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} |
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|
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//-------- |
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// Z=1 |
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//-------- |
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if(dedxtrk > (2.8+3.3/(rigidity*rigidity)))return; |
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if(dedxtrk < (0.4+0.35/(rigidity*rigidity)))return; |
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sel[2]++; |
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|
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if(deflection>0){ |
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hrig1->Fill(rigidity); |
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float m=0.938; |
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float a=1.; |
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float z=1.; |
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float en=(sqrt( (z*rigidity)*(z*rigidity)+m*m )-m)/a; |
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hen1->Fill(en); |
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} |
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//------------------------ |
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// 6-planes lever-arm |
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//------------------------ |
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if( !(track->XGood(0) && track->XGood(5)) )return; |
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sel[3]++; |
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|
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for(Int_t ip=0; ip<6; ip++)herrx[ip]->Fill(errx[ip]); |
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for(Int_t ip=0; ip<6; ip++)herry[ip]->Fill(erry[ip]); |
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|
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//--------------------------- |
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// cut on spatial resolution |
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//--------------------------- |
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if( errx[0] > 0.0004 )return; |
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if( errx[5] > 0.0004 )return; |
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sel[4]++; |
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|
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herrdef->Fill(errdef); |
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hbetavsdef2->Fill(deflection,beta); |
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hdef->Fill(deflection); |
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} |
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|
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delete track; |
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|
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|
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} |
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//=============================================================== |
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// Save histograms |
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//=============================================================== |
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void SaveHistos( TFile * outf ){ |
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|
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TString hid; |
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|
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gROOT->cd(); |
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// ---------------------------------- |
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// retrieve histos |
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// ---------------------------------- |
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RetrieveHistos(); |
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|
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// ---------------------------------- |
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// save on file |
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// ---------------------------------- |
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outf->cd(); |
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|
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hchi2def->Write(); |
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hchi2rig->Write(); |
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hdedxtofvsdedxtrk->Write(); |
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hdedxtrkvsrig->Write(); |
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hdedxtofvsrig->Write(); |
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hbetavsrig->Write(); |
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hdedxtrkvsdef->Write(); |
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hbetavsdef->Write(); |
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hbetavsdef2->Write(); |
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hdef->Write(); |
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hrig1->Write(); |
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hrig2->Write(); |
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hen1->Write(); |
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hen2->Write(); |
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herrdef->Write(); |
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for(Int_t ip=0; ip<6; ip++){ |
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herrx[ip]->Write(); |
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herry[ip]->Write(); |
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} |
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|
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cout << "------------------------------------------------------------------" <<endl; |
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cout << "Pre-selected events :"<<tot<<endl; |
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if(!tot)return; |
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cout << "chi2 selection :"<<sel[1]<< " (" << ((float)sel[1]/(float)tot) <<")"<<endl; |
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cout << "Z=2 selection :"<<sel[5]<< " (" << ((float)sel[5]/(float)tot) <<")"<<endl; |
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cout << "Z=1 selection :"<<sel[2]<< " (" << ((float)sel[2]/(float)tot) <<")"<<endl; |
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cout << "(6-plane lever-arm) :"<<sel[3]<< " (" << ((float)sel[3]/(float)tot) <<")"<<endl; |
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cout << "ext.spatial res. on planes 1-6 < 4 micron :"<<sel[4]<< " (" << ((float)sel[4]/(float)tot) <<")"<<endl; |
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cout << "------------------------------------------------------------------" <<endl; |
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|
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} |
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