#include <TGraph.h>
#include <TLegend.h>
#include <TLine.h>
+#include <TMath.h>
#include <AliLog.h>
#include <AliESD.h>
return kFALSE;
}
- Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD, AliPWG0Helper::kMB1);
+ Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD->GetTriggerMask(), AliPWG0Helper::kMB1);
if (!eventTriggered)
{
TClonesArray* digits = 0;
treeD->SetBranchAddress("ITSDigitsSPD", &digits);
- if (digits);
+ if (digits)
digits->Clear();
// each value for both layers
}
}
-void AliHighMultiplicitySelector::Ntrigger()
+void AliHighMultiplicitySelector::Ntrigger(Bool_t relative)
{
//
// produces a spectrum created with N triggers
/*
+ gSystem->Load("libANALYSIS");
gSystem->Load("libPWG0base");
.L AliHighMultiplicitySelector.cxx+g
x = new AliHighMultiplicitySelector();
x->ReadHistograms("highmult_hijing100k.root");
x->Ntrigger();
+ gSystem->Load("libPWG0base");
+ .L AliHighMultiplicitySelector.cxx+g
+ x = new AliHighMultiplicitySelector();
+ x->ReadHistograms("highmult_hijing100k.root");
+ x->Ntrigger(kFALSE);
+
*/
// get x-sections
xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex"));
xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex"));
- // 10^28 lum --> 1.2 kHz
- // 10^31 lum --> 1200 kHz
- //Float_t rate = 1200e3;
- Float_t rate = 250e3;
+ // 10^28 lum --> 1.4 kHz
+ // 10^31 lum --> 1400 kHz
+ //Float_t rate = 1400e3;
+ Float_t rate = 1.4e3;
// time in s
- Float_t lengthRun = 1e6;
+ Float_t lengthRun = 1e5;
Int_t colors[] = { 2, 3, 4, 6, 7, 8 };
Int_t markers[] = { 7, 2, 4, 5, 6, 27 };
//Int_t cuts[] = { 0, 164, 178, 190, 204, 216 };
//Int_t nCuts = 4;
//Int_t cuts[] = { 0, 164, 190, 216 };
- Int_t nCuts = 4;
- Int_t cuts[] = { 0, 114, 145, 165 };
+
+ //Int_t nCuts = 4;
+ //Int_t cuts[] = { 0, 114, 145, 165 };
+ //Float_t ratePerTrigger[] = { 60, 13.3, 13.3, 13.3 };
+
+ Int_t nCuts = 3;
+ Int_t cuts[] = { 0, 114, 148 };
+
+ //Int_t nCuts = 3;
+ //Int_t cuts[] = { 0, 126, 162 };
+ //Float_t ratePerTrigger[] = { 60, 20.0, 20.0 };
// desired trigger rate in Hz
- //Float_t ratePerTrigger[] = { 100, 1, 1, 1, 1, 1 };
- Float_t ratePerTrigger[] = { 60, 13.3, 13.3, 13.3 };
+ Float_t ratePerTrigger[] = { 100, 1, 1, 1, 1, 1 };
xSection->SetStats(kFALSE);
xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2");
canvas2->SetTopMargin(0.05);
canvas2->SetRightMargin(0.05);
canvas2->SetLogy();
- xSection->DrawCopy("HIST");
+
+ if (relative)
+ xSection->DrawCopy("HIST");
TLegend* legend2 = new TLegend(0.15, 0.15, 0.6, 0.4);
legend2->SetFillColor(0);
{
Int_t cut = cuts[currentCut];
+ TH1* triggerEff = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff");
+
TH1* proj = GetXSectionCut(xSection, fMvsL, cut);
+ Float_t triggerLimit = 0;
+ for (Int_t bin = 1; bin <= triggerEff->GetNbinsX(); bin++)
+ if (triggerEff->GetBinContent(bin) < 0.5)
+ triggerLimit = triggerEff->GetXaxis()->GetBinCenter(bin);
+
+ Printf("Efficiency limit (50%%) is at multiplicity %f", triggerLimit);
+
Double_t total = 0;
if (proj->Integral(1, 1000) > 0)
total = proj->Integral(1, 1000);
if (downScale < 1)
downScale = 1;
Long64_t nTrigger = (Long64_t) (normalRate / downScale * lengthRun);
+ nTrigger = TMath::Nint(((Float_t) nTrigger) / 1000) * 1000;
Printf("Normal rate is %f, downscale: %f, Simulating %lld triggers", normalRate, downScale, nTrigger);
+ if (nTrigger == 0)
+ continue;
+
proj2->FillRandom(proj, nTrigger);
Int_t removed = 0;
Printf("Removed %d events", removed);
- proj2->Scale(1.0 / nTrigger * proj->Integral(1, 1000));
+ if (relative)
+ proj2->Scale(1.0 / nTrigger * proj->Integral(1, 1000));
proj2->SetLineColor(colors[currentCut]);
proj2->SetMarkerStyle(markers[currentCut]);
proj2->SetMarkerColor(colors[currentCut]);
- proj2->DrawCopy("SAME P");
- legend2->AddEntry(proj2, Form("%lld evts, FO > %d chips", nTrigger, cut));
+
+ if (relative || currentCut > 0) {
+ proj2->DrawCopy("SAME P");
+ } else
+ proj2->DrawCopy(" P");
+
+ TString eventStr;
+ if (nTrigger > 1e6)
+ {
+ eventStr.Form("%lld M", nTrigger / 1000 / 1000);
+ }
+ else if (nTrigger > 1e3)
+ {
+ eventStr.Form("%lld K", nTrigger / 1000);
+ }
+ else
+ eventStr.Form("%lld", nTrigger);
+
+ TString triggerStr;
+ if (cut == 0)
+ {
+ triggerStr = "minimum bias";
+ }
+ else
+ triggerStr.Form("FO > %d chips", cut);
+
+ legend2->AddEntry(proj2, Form("%s evts, %s", eventStr.Data(), triggerStr.Data()));
+
+ if (triggerLimit > 1)
+ {
+ TLine* line = new TLine(triggerLimit, proj2->GetMinimum(), triggerLimit, proj2->GetMaximum());
+ line->SetLineColor(colors[currentCut]);
+ line->Draw();
+ }
}
legend2->Draw();
}
}
+void AliHighMultiplicitySelector::Contamination()
+{
+ //
+ //
+
+ /*
+
+ gSystem->Load("libANALYSIS");
+ gSystem->Load("libPWG0base");
+ .L AliHighMultiplicitySelector.cxx+g
+ x = new AliHighMultiplicitySelector();
+ x->ReadHistograms("highmult_hijing100k.root");
+ x->Contamination();
+
+ */
+
+ // get x-sections
+ TFile* file = TFile::Open("crosssectionEx.root");
+ if (!file)
+ return;
+
+ TH1* xSections[2];
+ xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex"));
+ xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex"));
+
+ // rate = L * sigma
+ // sigma ~ 80 mb (Pythia 14 TeV)
+ // 10^28 lum --> 8e2 Hz
+ // 10^31 lum --> 8e5 Hz
+ Double_t rates[] = { 8e2, 8e3, 8e4, 8e5 };
+
+ Int_t nCuts = 4;
+ Int_t cuts[] = { 104, 134, 154, 170 };
+
+ // put to 2 for second layer
+ for (Int_t i=0; i<1; ++i)
+ {
+ if (!xSections[i])
+ continue;
+
+ // relative x-section, once we have a collision
+ xSections[i]->Scale(1.0 / xSections[i]->Integral());
+
+ Int_t max = xSections[i]->GetNbinsX();
+ max = 500;
+
+ Float_t* xSection = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ xSection[mult] = xSections[i]->GetBinContent(mult+1);
+
+ TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2;
+
+ TGraph* graph = new TGraph;
+
+ for (Int_t currentCut = 0; currentCut<nCuts; ++currentCut)
+ {
+ Int_t cut = cuts[currentCut];
+ Double_t rate = rates[currentCut];
+ //Double_t rate = rates[3];
+
+ // coll. in 100 ns window
+ Double_t windowSize = 100e-9;
+ //Double_t windowSize = 25e-9;
+ Double_t collPerWindow = windowSize * rate;
+ Printf("coll/window = %f", collPerWindow);
+ Double_t windowsPerSecond = 1.0 / windowSize;
+
+ TH1* triggerEffHist = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff");
+ Float_t* triggerEff = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerEff[mult] = triggerEffHist->GetBinContent(mult+1);
+
+ Double_t triggerRate = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerRate += xSection[mult] * triggerEff[mult];
+
+ triggerRate *= TMath::Poisson(1, collPerWindow) * windowsPerSecond;
+
+ Printf("Rate for 1 collision is %f Hz", triggerRate);
+
+ Double_t triggerRate2 = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = mult; mult2 < max; mult2++)
+ if (mult+mult2 < max)
+ triggerRate2 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * triggerEff[mult+mult2];
+
+ triggerRate2 *= TMath::Poisson(2, collPerWindow) * windowsPerSecond;
+
+ Printf("Rate for 2 collisions is %f Hz --> %.1f%%", triggerRate2, triggerRate2 / triggerRate * 100);
+
+ Double_t triggerRate3 = 0;
+
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = mult; mult2 < max-mult; mult2++)
+ for (Int_t mult3 = 0; mult3 < max-mult-mult2; mult3++)
+ //if (mult+mult2+mult3 < max)
+ triggerRate3 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * xSection[mult3] * triggerEff[mult+mult2+mult3];
+
+ triggerRate3 *= TMath::Poisson(3, collPerWindow) * windowsPerSecond;
+ //triggerRate3 *= collPerWindow * collPerWindow * rate;
+
+ Printf("Rate for 3 collisions is %f Hz --> %.1f%%", triggerRate3, triggerRate3 / triggerRate * 100);
+
+ Float_t totalContamination = (triggerRate2 + triggerRate3) / (triggerRate + triggerRate2 + triggerRate3);
+
+ Printf("Total contamination is %.1f%%", totalContamination * 100);
+
+ graph->SetPoint(graph->GetN(), cut, totalContamination);
+
+ continue;
+
+ Double_t triggerRate4 = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = mult; mult2 < max-mult; mult2++)
+ for (Int_t mult3 = 0; mult3 < max-mult-mult2; mult3++)
+ for (Int_t mult4 = 0; mult4 < max-mult-mult2-mult3; mult4++)
+ //if (mult+mult2+mult3+mult4 < max)
+ triggerRate4 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * xSection[mult3] * xSection[mult4] * triggerEff[mult+mult2+mult3+mult4];
+
+ //triggerRate4 *= collPerWindow * collPerWindow * collPerWindow * rate;
+ triggerRate4 *= TMath::Poisson(4, collPerWindow) * windowsPerSecond;
+
+ Printf("Rate for 4 collisions is %f Hz --> %.1f%%", triggerRate4, triggerRate4 / triggerRate * 100);
+
+ // general code for n collisions follows, however much slower...
+ /*
+ const Int_t maxdepth = 4;
+ for (Int_t depth = 1; depth <= maxdepth; depth++) {
+ Double_t triggerRate = 0;
+
+ Int_t m[maxdepth];
+ for (Int_t d=0; d<maxdepth; d++)
+ m[d] = 0;
+
+ while (m[0] < max) {
+ Double_t value = 1;
+ Int_t sum = 0;
+ for (Int_t d=0; d<depth; d++) {
+ value *= xSection[m[d]];
+ sum += m[d];
+ }
+
+ if (sum < max) {
+ value *= triggerEff[sum];
+ triggerRate += value;
+ }
+
+ Int_t increase = depth-1;
+ ++m[increase];
+ while (m[increase] == max && increase > 0) {
+ m[increase] = 0;
+ --increase;
+ ++m[increase];
+ }
+ }
+
+ triggerRate *= rate * TMath::Power(collPerWindow, depth - 1);
+
+ Printf("Rate for %d collisions is %f Hz", depth, triggerRate);
+ }*/
+ }
+
+ new TCanvas; graph->Draw("AP*");
+ }
+}
+
+void AliHighMultiplicitySelector::Contamination2()
+{
+ //
+ // produces a spectrum created with N triggers
+ // number of triggers and thresholds for the moment fixed
+ //
+
+ /*
+
+ gSystem->Load("libANALYSIS");
+ gSystem->Load("libPWG0base");
+ .L AliHighMultiplicitySelector.cxx+g
+ x = new AliHighMultiplicitySelector();
+ x->ReadHistograms("highmult_hijing100k.root");
+ x->Contamination2();
+
+ */
+
+ // get x-sections
+ TFile* file = TFile::Open("crosssectionEx.root");
+ if (!file)
+ return;
+
+ TH1* xSections[2];
+ xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex"));
+ xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex"));
+
+ Int_t nCuts = 4;
+ Int_t cuts[] = { 104, 134, 154, 170 };
+
+ new TCanvas;
+
+ Int_t colors[] = { 2, 3, 4, 6, 7, 8 };
+ Int_t markers[] = { 7, 2, 4, 5, 6, 27 };
+
+ // put to 2 for second layer
+ for (Int_t i=0; i<1; ++i)
+ {
+ if (!xSections[i])
+ continue;
+
+ // relative x-section, once we have a collision
+ xSections[i]->Scale(1.0 / xSections[i]->Integral());
+
+ Int_t max = xSections[i]->GetNbinsX();
+ max = 500;
+
+ Float_t* xSection = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ xSection[mult] = xSections[i]->GetBinContent(mult+1);
+
+ TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2;
+
+ for (Int_t currentCut = 0; currentCut<nCuts; ++currentCut)
+ {
+ TGraph* graph = new TGraph;
+ graph->SetMarkerColor(colors[currentCut]);
+ graph->SetMarkerStyle(markers[currentCut]);
+
+ Int_t cut = cuts[currentCut];
+
+ TH1* triggerEffHist = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff");
+ Float_t* triggerEff = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerEff[mult] = triggerEffHist->GetBinContent(mult+1);
+
+ Double_t triggerRate = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerRate += xSection[mult] * triggerEff[mult];
+
+ Printf("Raw value for 1 collision is %e", triggerRate);
+
+ Double_t triggerRate2 = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = mult; mult2 < max; mult2++)
+ if (mult+mult2 < max)
+ triggerRate2 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * triggerEff[mult+mult2];
+
+ Printf("Raw value for 2 collisions is %e", triggerRate2);
+
+ for (Double_t doubleRate = 0; doubleRate <= 0.3; doubleRate += 0.005)
+ {
+ Float_t totalContamination = (triggerRate2 * doubleRate) / (triggerRate + triggerRate2 * doubleRate);
+
+ //Printf("Total contamination is %.1f%%", totalContamination * 100);
+
+ graph->SetPoint(graph->GetN(), doubleRate, totalContamination);
+ }
+
+ graph->Draw((currentCut == 0) ? "A*" : "* SAME");
+ graph->GetXaxis()->SetRangeUser(0, 1);
+ }
+ }
+}
+
+void AliHighMultiplicitySelector::Contamination3()
+{
+ //
+ //
+
+ /*
+
+ gSystem->Load("libANALYSIS");
+ gSystem->Load("libPWG0base");
+ .L AliHighMultiplicitySelector.cxx+g
+ x = new AliHighMultiplicitySelector();
+ x->ReadHistograms("highmult_hijing100k.root");
+ x->Contamination3();
+
+ */
+
+ // get x-sections
+ TFile* file = TFile::Open("crosssectionEx.root");
+ if (!file)
+ return;
+
+ TH1* xSections[2];
+ xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex"));
+ xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex"));
+
+ // prob for a collision in a bunch crossing
+ Int_t nRates = 3;
+ Float_t rates[] = {0.07, 0.1, 0.2};
+
+ new TCanvas;
+
+ Int_t colors[] = { 2, 3, 4, 6, 7, 8 };
+ Int_t markers[] = { 7, 2, 4, 5, 6, 27 };
+
+ // put to 2 for second layer
+ for (Int_t i=0; i<1; ++i)
+ {
+ if (!xSections[i])
+ continue;
+
+ // relative x-section, once we have a collision
+ xSections[i]->Scale(1.0 / xSections[i]->Integral());
+
+ Int_t max = xSections[i]->GetNbinsX();
+ max = 500;
+
+ Float_t* xSection = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ xSection[mult] = xSections[i]->GetBinContent(mult+1);
+
+ TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2;
+
+ for (Int_t currentRate = 0; currentRate<nRates; ++currentRate)
+ {
+ TGraph* graph = new TGraph;
+ graph->SetMarkerColor(colors[currentRate]);
+ graph->SetMarkerStyle(markers[currentRate]);
+
+ Float_t rate = rates[currentRate];
+
+ for (Int_t cut = 100; cut <= 201; cut += 10)
+ {
+ Printf("cut at %d", cut);
+
+ TH1* triggerEffHist = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff");
+ Float_t* triggerEff = new Float_t[max];
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerEff[mult] = triggerEffHist->GetBinContent(mult+1);
+
+ Double_t triggerRate = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ triggerRate += xSection[mult] * triggerEff[mult];
+
+ Printf("Raw value for 1 collision is %e", triggerRate);
+
+ Double_t triggerRate2 = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = mult; mult2 < max; mult2++)
+ if (mult+mult2 < max)
+ triggerRate2 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * triggerEff[mult+mult2];
+
+ Printf("Raw value for 2 collisions is %e", triggerRate2);
+
+ Double_t triggerRate3 = 0;
+ for (Int_t mult = 0; mult < max; mult++)
+ for (Int_t mult2 = 0; mult2 < max; mult2++)
+ for (Int_t mult3 = 0; mult3 < max; mult3++)
+ if (mult+mult2+mult3 < max)
+ triggerRate3 += xSection[mult] * xSection[mult2] * xSection[mult3] * triggerEff[mult+mult2+mult3];
+
+ Printf("Raw value for 3 collisions is %e", triggerRate3);
+
+ Double_t singleRate = TMath::Poisson(1, rate);
+ Double_t doubleRate = TMath::Poisson(2, rate);
+ Double_t tripleRate = TMath::Poisson(3, rate);
+
+ Printf("single = %f, double = %f, triple = %f", singleRate, doubleRate, tripleRate);
+
+ Float_t totalContamination = (triggerRate2 * doubleRate + triggerRate3 * tripleRate) / (triggerRate * singleRate + triggerRate2 * doubleRate + triggerRate3 * tripleRate);
+
+ //Printf("Total contamination is %.1f%%", totalContamination * 100);
+
+ graph->SetPoint(graph->GetN(), cut, totalContamination);
+ }
+
+ graph->Draw((currentRate == 0) ? "A*" : "* SAME");
+ graph->GetXaxis()->SetTitle("layer 1 threshold");
+ graph->GetYaxis()->SetTitle("contamination");
+ graph->GetYaxis()->SetRangeUser(0, 1);
+ }
+ }
+}
+
void AliHighMultiplicitySelector::DrawHistograms()
{
// draws the histograms
x->ReadHistograms("highmult_central.root");
x->DrawHistograms();
+ gSystem->Load("libANALYSIS");
gSystem->Load("libPWG0base");
.L AliHighMultiplicitySelector.cxx+
x = new AliHighMultiplicitySelector();
canvas->SaveAs("L1NoCurve.gif");
canvas->SaveAs("L1NoCurve.eps");
+ TLine* line = new TLine(fMvsL1->GetXaxis()->GetXmin(), 150, fMvsL1->GetXaxis()->GetXmax(), 150);
+ line->SetLineWidth(2);
+ line->SetLineColor(kRed);
+ line->Draw();
+
+ canvas->SaveAs("L1NoCurveCut.gif");
+ canvas->SaveAs("L1NoCurveCut.eps");
+
+ return;
+
// draw corresponding theoretical curve
TF1* func = new TF1("func", "[0]*(1-(1-1/[0])**x)", 1, 1000);
func->SetParameter(0, 400-5*2);
// N, normalised to 1 for N=0)
/*
+ gSystem->Load("libANALYSIS");
gSystem->Load("libPWG0base");
.L AliHighMultiplicitySelector.cxx+
x = new AliHighMultiplicitySelector();
Double_t integral = proj->Integral();
- Printf("Cut at %d, intregral is %e", threshold, integral);
+ Printf("Cut at %d, integral is %e", threshold, integral);
result->SetPoint(result->GetN(), threshold, integral);
}
return result;
}
+
+void AliHighMultiplicitySelector::MBComparison()
+{
+ //
+ // finds the threshold from which onwards the number of found events above N times the mean
+ // is higher using a high mult. trigger than just triggering with MB
+ //
+
+ /*
+
+ gSystem->Load("libANALYSIS");
+ gSystem->Load("libPWG0base");
+ .L AliHighMultiplicitySelector.cxx+g
+ x = new AliHighMultiplicitySelector();
+ x->ReadHistograms("highmult_hijing100k.root");
+ x->MBComparison();
+
+ */
+
+ // get x-sections
+ TFile* file = TFile::Open("crosssectionEx.root");
+ if (!file)
+ return;
+
+ TH1* xSections[2];
+ xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex"));
+ xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex"));
+
+ // rate = L * sigma
+ // sigma ~ 80 mb (Pythia 14 TeV)
+ // 10^28 lum --> 8e2 Hz
+ // 10^31 lum --> 8e5 Hz
+ Int_t nRates = 4;
+ Double_t rates[] = { 8e2, 8e3, 8e4, 8e5 };
+
+ // threshold in number of fired chips for corresponding rate
+ //Int_t cuts[] = { 104, 134, 154, 170 }; // values for 20 Hz
+ Int_t cuts[] = { 82, 124, 147, 164 }; // values for 50 Hz
+
+ // bandwidth, fractions (for MB, high mult.)
+ Float_t bandwidth = 1e3;
+ Float_t fractionMB = 0.5;
+ Float_t fractionHM = 0.05;
+
+ // different limits to define "interesting events"
+ Int_t nLimits = 9;
+ Int_t limits[] = { 0, 1, 2, 4, 6, 7, 8, 9, 10 };
+
+ // put to 2 for second layer
+ for (Int_t i=0; i<1; ++i)
+ {
+ if (!xSections[i])
+ continue;
+
+ TH1* xSection = xSections[i];
+ TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2;
+
+ // relative x-section, once we have a collision
+ xSection->Scale(1.0 / xSection->Integral());
+
+ xSection->SetStats(kFALSE);
+ xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2");
+ xSection->GetXaxis()->SetTitle(Form("true multiplicity in |#eta| < %.1f", (i == 0) ? 2.0 : 1.5));
+ xSection->GetXaxis()->SetRangeUser(0, (i == 0) ? 450 : 350);
+ xSection->GetYaxis()->SetTitleOffset(1.2);
+
+ TCanvas* canvas = new TCanvas("MBComparison", "MBComparison", 1000, 800);
+ canvas->Divide(3, 3);
+
+ for (Int_t currentLimit = 0; currentLimit<nLimits; currentLimit++)
+ {
+ // limit is N times the mean
+ Int_t limit = (Int_t) (xSection->GetMean() * limits[currentLimit]);
+ if (limit < 1)
+ limit = 1;
+
+ TGraph* graphMB = new TGraph;
+ graphMB->SetTitle(Form("Events with %d times above <n> (i.e. n >= %d)", limits[currentLimit], limit));
+ graphMB->SetMarkerStyle(20);
+
+ TGraph* graphBoth = new TGraph;
+ graphBoth->SetMarkerStyle(21);
+
+ Float_t min = bandwidth;
+ Float_t max = 0;
+
+ for (Int_t current = 0; current<nRates; ++current)
+ {
+ Float_t rate = rates[current];
+ Int_t cut = cuts[current];
+
+ TH1* triggerEff = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff");
+ TH1* proj = GetXSectionCut(xSection, fMvsL, cut);
+
+ Float_t downScaleMB1 = rate / bandwidth;
+ if (downScaleMB1 < 1)
+ downScaleMB1 = 1;
+
+ Float_t downScaleMB2 = rate / (bandwidth * fractionMB);
+ if (downScaleMB2 < 1)
+ downScaleMB2 = 1;
+
+ Float_t downScaleHM = rate * proj->Integral(1, xSection->GetNbinsX()) / (bandwidth * fractionHM);
+ if (downScaleHM < 1)
+ downScaleHM = 1;
+
+ Float_t rateMB1 = rate / downScaleMB1 * xSection->Integral(limit, xSection->GetNbinsX());
+ Float_t rateMB2 = rate / downScaleMB2 * xSection->Integral(limit, xSection->GetNbinsX());
+ Float_t rateHM = rate / downScaleHM * proj->Integral(limit, xSection->GetNbinsX());
+ Float_t combinedRate = rateMB2 + rateHM;
+
+ graphMB->SetPoint(graphMB->GetN(), rate, rateMB1);
+ graphBoth->SetPoint(graphBoth->GetN(), rate, combinedRate);
+
+ min = TMath::Min(min, TMath::Min(rateMB1, combinedRate));
+ max = TMath::Max(min, TMath::Max(rateMB1, combinedRate));
+
+ Printf("The rates for events with %d times above <n> (i.e. n >= %d) at a rate of %.2e Hz is:", limits[currentLimit], limit, rate);
+ Printf(" %.2e Hz in MB-only mode", rateMB1);
+ Printf(" %.2e Hz = %.2e Hz + %.2e Hz in MB + high mult. mode", combinedRate, rateMB2, rateHM);
+
+ Printf(" The downscale factors are: %.2f %.2f %.2f", downScaleMB1, downScaleMB2, downScaleHM);
+
+ Int_t triggerLimit = 0;
+ for (Int_t bin = 1; bin <= triggerEff->GetNbinsX(); bin++)
+ if (triggerEff->GetBinContent(bin) < 0.5)
+ triggerLimit = (Int_t) triggerEff->GetXaxis()->GetBinCenter(bin);
+
+ Printf(" Efficiency limit (50%%) is at multiplicity %d", triggerLimit);
+ Float_t fractionGood = proj->Integral(triggerLimit, proj->GetNbinsX()) / proj->Integral();
+ Printf(" %.2f %% of the events are above the trigger limit", fractionGood * 100);
+
+ if (triggerLimit > limit)
+ Printf(" WARNING: interesting events also counted inside the trigger limit");
+
+ Printf("");
+ }
+
+ canvas->cd(currentLimit+1)->SetLogx();
+ canvas->cd(currentLimit+1)->SetLogy();
+
+ graphMB->Draw("AP");
+ graphBoth->Draw("P SAME");
+
+ graphMB->GetYaxis()->SetRangeUser(0.5 * min, 2 * max);
+ graphMB->GetXaxis()->SetTitle("Raw rate in Hz");
+ graphMB->GetYaxis()->SetTitle("Event rate in Hz");
+ }
+ }
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff