dna/slowing/plot.C

0001 // *********************************************************************
0002 // To execute this macro under ROOT after your simulation ended,
0003 //   1 - launch ROOT (usually type 'root' at your machine's prompt)
0004 //   2 - type '.X plot.C' at the ROOT session prompt
0005 // *********************************************************************
0006 {
0007   gROOT->Reset();
0008   gStyle->SetPalette(1);
0009   gROOT->SetStyle("Plain");
0010
0011   auto c1 = new TCanvas ("c1","",20,20,800,800);
0012   c1->Divide(1,1);
0013
0014   TFile f("slowing.root");
0015
0016   TH1F* h1 ;
0017   h1 = (TH1F*)f.Get("1");
0018   auto h2 = (TH1F*)f.Get("2");
0019   auto h3 = (TH1F*)f.Get("3");
0020
0021   //goto end;
0022
0023   Int_t nbinsx = h1->GetXaxis()->GetNbins();
0024   //cout << nbinsx << endl;
0025
0026   Double_t y = 0;
0027   Double_t mini = 0;
0028   Double_t maxi = 0;
0029   Double_t largeur = 0;
0030
0031   Double_t sum = 0;
0032
0033   // Division by bin width to get y axis
0034   // in nm/eV
0035   //
0036   // Scaling by 1E9/1.6 to get correct unit
0037   // for Phi/D in (/cm2/eV/Gy)
0038   // when histogram (in nm/eV) is
0039   // multiplied by density(=1g/cm3)/E(eV)
0040
0041   for (Int_t i=1; i<=nbinsx; i++)
0042   {
0043     sum = sum + h1->GetBinContent(i);
0044
0045     mini = h1->GetBinLowEdge(i);
0046     maxi = mini + h1->GetBinWidth(i);
0047     largeur = std::pow(10,maxi)-std::pow(10,mini);
0048     // cout << mini << " " << std::pow(10,mini)<< " " << largeur
0049     // << " " << maxi << " " << std::pow(10,maxi) << endl;
0050     h1->SetBinContent(i,h1->GetBinContent(i)*(1E9/1.6)/largeur);
0051     h2->SetBinContent(i,h2->GetBinContent(i)*(1E9/1.6)/largeur);
0052     h3->SetBinContent(i,h3->GetBinContent(i)*(1E9/1.6)/largeur);
0053   }
0054
0055   gStyle->SetOptStat(000000);
0056
0057   cout << endl;
0058   cout << "--> Integral of Phi (nm/eV) = " << sum << endl;
0059   cout << endl;
0060
0061   c1->cd(1);
0062
0063   TH2F *ht = new TH2F("","",2,1,6,2,1E2,1E8);
0064   ht->Draw();
0065   ht->GetXaxis()->SetTitle("Log(E (eV))");
0066   ht->GetYaxis()->SetTitle("#phi/D (/cm^{2}/eV/Gy)");
0067   ht->GetXaxis()->SetTitleSize(0.03);
0068   ht->GetYaxis()->SetTitleSize(0.03);
0069   ht->GetXaxis()->SetTitleOffset(1.7);
0070   ht->GetYaxis()->SetTitleOffset(1.7);
0071
0072   gPad->SetLogy();
0073   h1->SetLineColor(2);
0074   h1->Draw("HSAME");
0075   h2->SetLineColor(3);
0076   h2->Draw("HSAME");
0077   h3->SetLineColor(4);
0078   h3->Draw("HSAME");
0079   h1->Draw("HSAME");
0080
0081   TLegend *legend=new TLegend(0.6,0.65,0.88,0.85);
0082   legend->AddEntry(h1,"All e-","L");
0083   legend->AddEntry(h2,"Primaries","L");
0084   legend->AddEntry(h3,"Secondaries","L");
0085   legend->Draw();
0086
0087 end:
0088 }