#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
/*
+ gSystem->Load("libANALYSIS");
gSystem->Load("libPWG0base");
.L AliHighMultiplicitySelector.cxx+g
x = new AliHighMultiplicitySelector();
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 };
//Float_t ratePerTrigger[] = { 60, 13.3, 13.3, 13.3 };
Int_t nCuts = 3;
- Int_t cuts[] = { 0, 126, 162 };
- Float_t ratePerTrigger[] = { 60, 20.0, 20.0 };
+ 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[] = { 100, 1, 1, 1, 1, 1 };
xSection->SetStats(kFALSE);
xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2");
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;
} else
proj2->DrawCopy(" P");
- legend2->AddEntry(proj2, Form("%lld evts, FO > %d chips", nTrigger, cut));
+ 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);
- TLine* line = new TLine(triggerLimit, proj2->GetMinimum(), triggerLimit, proj2->GetMaximum());
- line->SetLineColor(colors[currentCut]);
- line->Draw();
+ 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()
{
//
- // produces a spectrum created with N triggers
- // number of triggers and thresholds for the moment fixed
//
/*
//Double_t rate = rates[3];
// coll. in 100 ns window
- //Double_t windowSize = 100e-9;
- Double_t windowSize = 25e-9;
+ 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;
Printf("Raw value for 2 collisions is %e", triggerRate2);
- for (Double_t doubleRate = 0; doubleRate <= 0.2; doubleRate += 0.005)
+ for (Double_t doubleRate = 0; doubleRate <= 0.3; doubleRate += 0.005)
{
Float_t totalContamination = (triggerRate2 * doubleRate) / (triggerRate + triggerRate2 * doubleRate);
}
}
+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);
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff