Performance of Trigger counter for WC test Toshiyuki Gogami 3Dec2014.

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Presentation transcript:

Performance of Trigger counter for WC test Toshiyuki Gogami 3Dec2014

Contents Experimental setup Timing resolution

Goal Check performance of trigger counters for WC window test which will be performed in a few weeks.

Experimental setup CH1 CH2 ChannelIDHV [V]Remarks 1H7195 (RD7241)2300Lower 2H7195 (RD7198)2300Upper Unit: mm

ADC vs. TDC (Before and after correction) CH1CH2 CH1CH2 One night data 12/2 – 12/3 (RUN335-run338)

TOF vs. ADC (Before and after correction) CH1CH2 CH1CH2 One night data 12/2 – 12/3 (RUN335-run338)

TOF distribution Before and after correction σ = 430 ± 14 ps for each scintillator One night data 12/2 – 12/3 (RUN335-run338)

Summary Plastic scintillation detectors which will be used as a trigger for WC window test was tested with cosmic experimental room in Kyoto Univ. TOF resolution: ~ 600 ps  Timing resolution: 430 ps

Backu p

Reference Performance of E05 TOF detector 

Pulse height correction CH1 CH2 TOF Weights of chi-square minimized Chi-square vs. Number of iteration TOF before (blue) and after correction

adc_tof2.cc (1) /* "adc_tof2.cc" Toshi Gogami, 13Oct2014 */ void adc_tof2(){ // ====== General conditions ======= gROOT->SetStyle("Plain"); gStyle->SetOptStat(0); //gStyle->SetOptFit(1011); // ====== Open ROOT file ============ //TFile* f1 = new TFile("toftest_ root"); //TFile* f1 = new TFile("run46.dat.root"); //TFile* f1 = new TFile("toftest_run335-run337.root"); TFile* f1 = new TFile("toftest_run335-run338.root"); //TFile* f1 = new TFile(" run7.dat.root "); TTree* t1 = (TTree*)f1->Get("tree"); // ====== Cut conditions ============ /* TCut cut1 = "adc1>500 && adc1< && abs(time1-67.0)<5.0"; TCut cut2 = "adc2>500 && adc2< && abs(time2-74.5)<5.0"; TCut cut3 = "adc3>500 && adc3< && abs(time3-71.0)<5.0"; TCut cut4 = "adc4>500 && adc4< && abs(time4-67.0)<5.0"; */ TCut cut1 = "adc1>1500 && adc1< && abs(time1-64.1)<5.0"; TCut cut2 = "adc2>1200 && adc2< && abs(time2-70.0)<5.0"; TCut cut3 = "abs(ctof)<10.0"; TCut cut4 = ""; // ====== Create histograms ========= //double amin = 0.0, amax = ; double amin = , amax = ; double tmin = , tmax = 100.0; int abin = 100; int tbin = 800; // ~~~ ADC1 vs. TDC1~~~~ TH2F* hist1 = new TH2F("hist1","", abin,amin,amax, tbin,tmin,tmax); t1->Project("hist1","time1:adc1",cut1&&cut2&&cut3&&cut4); //t1->Project("hist1","time1:adc1",cut1&&cut2&&cut3); hist1->GetXaxis()->SetRangeUser(1500.0,3500.); //hist1->GetYaxis()->SetRangeUser(60.0,75.); //hist1->GetYaxis()->SetRangeUser(62.0,72.); //hist1->GetYaxis()->SetRangeUser(60.0,70.); hist1->GetYaxis()->SetRangeUser(61.0,67.); hist1->GetXaxis()->SetTitle("ADC [ch]"); hist1->GetYaxis()->SetTitle("Time [ns]"); // ~~~ ADC2 vs. TDC2~~~~ TH2F* hist2 = (TH2F*)hist1->Clone("hist2"); //hist2->GetYaxis()->SetRangeUser(71.0,78.); //hist2->GetYaxis()->SetRangeUser(65.0,75.0); hist2->GetYaxis()->SetRangeUser(67.0,73.0); t1->Project("hist2","time2:adc2",cut1&&cut2&&cut3&&cut4); // ~~~ ADC1 vs. corrected TDC1~~~~ TH2F* hist1_ = (TH2F*)hist1->Clone("hist1_"); //hist1_->GetYaxis()->SetRangeUser(-5.0,5.0); hist1_->GetYaxis()->SetRangeUser(-3.0,3.0); t1->Project("hist1_","ctime1:adc1",cut1&&cut2&&cut3&&cut4); // ~~~ ADC2 vs. corrected TDC2~~~~ TH2F* hist2_ = (TH2F*)hist2->Clone("hist2_"); //hist2_->GetYaxis()->SetRangeUser(-5.0,5.0); hist2_->GetYaxis()->SetRangeUser(-3.0,3.0); t1->Project("hist2_","ctime2:adc2",cut1&&cut2&&cut3&&cut4); /* // ~~~ ADC3 vs. TDC3~~~~ TH2F* hist3 = (TH2F*)hist1->Clone("hist3"); hist3->GetYaxis()->SetRangeUser(65.0,74.); t1->Project("hist3","time3:adc3",cut1&&cut2&&cut3&&cut4); // ~~~ ADC4 vs. TDC4~~~~ TH2F* hist4 = (TH2F*)hist1->Clone("hist4"); hist4->GetYaxis()->SetRangeUser(62.0,70.); t1->Project("hist4","time4:adc4",cut1&&cut2&&cut3&&cut4); */ // ~~~ Time Of Flight ~~~~ TH1F* h_tof = new TH1F("h_tof","TOF",200,-15.0,15.0); //h_tof->GetYaxis()->SetRangeUser(62.0,70.); t1->Project("h_tof","tof",cut1&&cut2&&cut3&&cut4); h_tof->GetXaxis()->SetTitle("[ns]"); h_tof->GetYaxis()->SetTitle("[Counts / 150 ps]"); h_tof->SetFillColor(9); TH1F* h_tof_ = (TH1F*)h_tof->Clone("h_tof_"); h_tof_->SetTitle("Corrected TOF"); t1->Project("h_tof_","ctof",cut1&&cut2&&cut3&&cut4); double ha,hb; double hmax; ha = h_tof ->GetMaximum(); hb = h_tof_->GetMaximum(); hmax = ha; if(ha<hb) hmax = hb; h_tof ->SetMaximum(hmax*1.10); h_tof_->SetMaximum(hmax*1.10);

adc_tof2.cc (2) // ~~~ ADC1 vs. TOF~~~~ double tofmin = -10.0, tofmax = 10.0; int tofbin = 100; TH2F* hist5 = new TH2F("hist5","", abin,amin,amax, tofbin,tofmin,tofmax); t1->Project("hist5","tof:adc1",cut1&&cut2&&cut3&&cut4); hist5->GetYaxis()->SetRangeUser(-5.0,5.0); //hist5->GetXaxis()->SetRangeUser(500.0,1500.); hist5->GetXaxis()->SetRangeUser(1500.0,3000.); hist5->GetXaxis()->SetTitle("ADC [ch]"); hist5->GetYaxis()->SetTitle("TOF [ns]"); // ~~~ ADC2 vs. TOF~~~~ TH2F* hist6 = (TH2F*)hist5->Clone("hist6"); t1->Project("hist6","tof:adc2",cut1&&cut2&&cut3&&cut4); // ~~~ ADC1 vs. corrected TOF~~~~ TH2F* hist5_ = (TH2F*)hist5->Clone("hist5_"); t1->Project("hist5_","ctof:adc1",cut1&&cut2&&cut3&&cut4); // ~~~ ADC2 vs. corrected TOF~~~~ TH2F* hist6_ = (TH2F*)hist5->Clone("hist6_"); t1->Project("hist6_","ctof:adc2",cut1&&cut2&&cut3&&cut4); /* // ~~~ ADC3 vs. TOF~~~~ TH2F* hist7 = (TH2F*)hist5->Clone("hist7"); t1->Project("hist7","tof:adc3",cut1&&cut2&&cut3&&cut4); // ~~~ ADC4 vs. TOF~~~~ TH2F* hist8 = (TH2F*)hist5->Clone("hist8"); t1->Project("hist8","tof:adc4",cut1&&cut2&&cut3&&cut4); */ TCanvas* c1 = new TCanvas("c1","c1"); c1->Divide(2,2); //t1->Draw("time1:adc1"); c1->cd(1);hist1->Draw("colz"); c1->cd(2);hist2->Draw("colz"); c1->cd(3);hist1_->Draw("colz"); c1->cd(4);hist2_->Draw("colz"); //c1->cd(3);hist3->Draw("colz"); //c1->cd(4);hist4->Draw("colz"); TCanvas* c2 = new TCanvas("c2","c2"); c2->Divide(1,2); c2->cd(1);h_tof->Draw(); c2->cd(2);h_tof_->Draw(); // ===== Fitting ======= //TF1* func1 = new TF1("func1","gaus",-3.0,3.0); //TF1* func1 = new TF1("func1","[0]*exp(x)",-3.0,3.0); TF1* func1 = new TF1("func1","[0]*exp(-0.5*pow((x-[1])/[2],2.0))",-2.5,2.5); func1->SetParameters(80.0,0.0,0.48); //func1->FixParameter(1,0.); func1->SetNpx(3000); //h_tof->Fit("func1","","", ); //h_tof->Fit("func1","","", ); //h_tof->Fit("func1","","", ); h_tof->Fit("func1","BN","",-0.9,0.9); func1->SetLineColor(2); func1->SetLineWidth(2); //func1->SetLineStyle(7); func1->Draw("same"); double width = 0.0; double widther = 0.0; width = func1->GetParameter(2); width = width*1.0e+3; // ns --> ps widther = func1->GetParError(2); widther = widther*1.0e+3; // ns --> ps cout << " Corrected TOF width (sigma) = " << width << " +/- " << widther << " ps" << endl; cout single counter: " << width/sqrt(2.0) << " +/- " << widther/sqrt(2.0) << " ps" << endl;