Gabriele Cosmo
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
{
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gROOT->Reset();
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// Draw histograms fill by Geant4 TestEm5 simulation
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TFile f1("./local.root");
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TH1D* h1 = (TH1D*) f1.Get("h1");
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h1->SetTitle("Energy deposited in 530 um of Si by 1 MeV e-");
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h1->GetXaxis()->SetTitle("Ekine (MeV)");
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h1->GetYaxis()->SetTitle("nb / MeV");
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h1->SetStats(kFALSE); // Eliminate statistics box
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h1->SetLineColor(kBlue);
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h1->Draw("HIST");
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TFile f2("./opt4.root");
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TH1D* h2 = (TH1D*) f2.Get("h1");
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h2->SetStats(kFALSE); // Eliminate statistics box
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h2->SetLineColor(kRed);
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h2->Draw("SAME 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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TMarker *pt;
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Double_t x, y;
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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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for ( int i = 0 ; i < nbdata ; i++ ) {
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in >> x >> y ;
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if (!in.good()) break;
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pt = new TMarker(x,y,32); // 32 for open triangle-down
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pt->SetMarkerColor(kGreen);
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pt->Draw();
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}
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in.close();
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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(h1,"local","l");
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legend->AddEntry(h2,"opt4 ","l");
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legend->AddEntry(pt,"Berger data","P");
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legend->Draw();
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}
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