Gabriele Cosmo
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
{
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gROOT->Reset();
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// Draw histogram fill by Geant4 TestEm5 simulation
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TFile f("./530um.root");
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TH1D* h1d = (TH1D*) f.Get("1");
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h1d->SetTitle("Energy deposited in 530 um of Si by 1 MeV e-");
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h1d->GetXaxis()->SetTitle("Ekine (MeV)");
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h1d->GetYaxis()->SetTitle("nb / MeV");
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h1d->SetStats(kFALSE); // Eliminate statistics box
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h1d->Draw("HIST");
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/*
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* e- 1 MeV in Silicon 530 um
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* M.J. Berger et al. NIM 69 (p.181) 1969
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* distribution of energy deposition
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* (from 110 keV to 1.03 MeV by bin of 10 keV --> 93 bins)
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*/
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ifstream in;
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in.open("530um.ascii");
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// First indicate number of data
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int nbdata = 0;
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in >> nbdata;
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// Create a new histogram with data.acsii values
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float x_min = 0.110;
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float x_max = 1.030;
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TH1F* h1f = new TH1F("h1f","",nbdata,x_min,x_max);
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Float_t x, y;
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while (1) {
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in >> x >> y ;
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if (!in.good()) break;
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h1f->Fill(x,y);
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}
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in.close();
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// Draw histogram fill by data.acsii values
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h1f->SetLineColor(2);
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h1f->Draw("SAME");
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// Print the histograms legend
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TLegend *legend = new TLegend(0.6,0.6,0.8,0.8);
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legend->AddEntry(h1d,"G4-9.1-ref-08++","l");
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legend->AddEntry(h1f,"Berger data","L");
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legend->Draw();
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}
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