110 lines
3.0 KiB
C++
110 lines
3.0 KiB
C++
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{
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TFile * f1 = new TFile("PIDFile.root");
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TH2F * hPID = (TH2F*) f1->Get("ipid");
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gStyle->SetOptStat(""); /// no state
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gStyle->SetOptTitle(0); /// no title
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TCanvas * ccc = new TCanvas("ccc", "ccc", 1000, 1000);
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const int nBinX = hPID->GetNbinsX();
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const int nBinY = hPID->GetNbinsY();
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const double xBinWidth = hPID->GetXaxis()->GetBinWidth(1);
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const double yBinWidth = hPID->GetYaxis()->GetBinWidth(1);
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double skewPar[6] = {10.9179,
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0.00416034,
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-233.306,
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3607.16,
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1538.37,
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0.000430609};
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const double c = 299.792458; /// mm/ns
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const double FL = 56423 ; /// mm
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const double Brho = 9.04; /// T.mm
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const double ma = 931.5;
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const double beta0 = Brho * c / TMath::Sqrt( 9*ma*ma + Brho*Brho*c*c); // for AoQ = 3
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const double tofOffset = 504.69; /// ns
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TH2F * hPID2 = new TH2F("hPID2", "PID; ToF; dE", 500, -280, -210, 500, 0, 5500);
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TH2F * hZAoQ = new TH2F("hZAoQ", "PID; A/Q; Z", 400, 2.0, 4.0, 400, 1, 17);
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TH1F * hZ = new TH1F("hZ", "Z; Z; count", 500, 1, 17);
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for( int i = 1; i < nBinX ; i++){
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for( int j = 1; j < nBinY ; j++){
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double xpos = hPID->GetXaxis()->GetBinCenter(i) + (gRandom->Rndm()-0.5) * xBinWidth;
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double ypos = hPID->GetYaxis()->GetBinCenter(j) + (gRandom->Rndm()-0.5) * yBinWidth;
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double zpos = hPID->GetBinContent(i,j);
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///===== Skew correction
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double ToF = xpos - (skewPar[0] * exp( - skewPar[1] * ypos ) + skewPar[2] - skewPar[5] * (skewPar[3] - ypos) * exp( - pow( (skewPar[3]-ypos)/skewPar[4],2) ) ) - 234 + 12;
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hPID2->Fill( ToF, ypos, zpos);
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double beta = FL/c/(ToF + tofOffset);
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double gamma = 1./TMath::Sqrt(1.-beta*beta);
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double Z = sqrt((ypos + 11.9473) / 23.097) * TMath::Power(beta / beta0, 1.3) ;
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double AoQ = c * Brho / gamma/ beta / ma;
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Z = -0.732942 + 1.47488 * Z - 0.100088 * Z*Z + 0.009867 * Z*Z*Z - 0.000476 * Z*Z*Z*Z + 8.90519e-6 * Z*Z*Z*Z*Z;
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hZAoQ->Fill(AoQ, Z, zpos);
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hZ->Fill(Z, zpos);
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}
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}
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double gamma = 4.0;
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int start = 0;
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int color = kColorPrintableOnGrey;
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gStyle->SetPalette(color);TColor::InvertPalette();
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double zMax = hZAoQ->GetMaximum();
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const int nCon = 200; /// number of contours
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double contours[nCon];
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for( int i = 0; i < nCon; i++){
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double xpos = i*1.0/nCon;
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double ypos = TMath::Power(xpos, gamma) *0.95;
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contours[i] = start + ypos*(zMax - start);
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}
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///ccc->Divide(2,1);
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ccc->cd(1); ///ccc->cd(1)->SetLogz();
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hZAoQ->SetContour(nCon, contours);
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hZAoQ->Draw("col");
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TEllipse * si42 = new TEllipse(3.01, 14, 0.05, 0.55);
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si42->SetFillStyle(0);
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si42->SetLineColor(2);
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si42->SetLineWidth(3);
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si42->Draw("same");
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TLatex text;
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text.SetTextColor(2);
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text.SetTextSize(0.05);
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text.DrawLatex(3.05, 14.2, "^{42}Si");
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//ccc->cd(2);
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//hZ->Draw("hist");
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ccc->SaveAs(Form("iPID_%3.1f_%d_%d.pdf", gamma, start, color));
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}
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