HRRL Pos Test 27Jul2012 Data Ana 3 MeV

2 ways to calculate electron charge

    NE(Int_t ri, Int_t Reprate, Int_t calc_meth){
    printf("%d %d \n",ri, Reprate);
    if(ri==1) TFile *f = new TFile("C:/Users/sadiq/Documents/phd/Runs_Jul_2012/rootfiles/7-27-12/r3735.root");
    else if(ri==2) TFile *f = new TFile("C:/Users/sadiq/Documents/phd/Runs_Jul_2012/rootfiles/7-27-12/r3737.root");
    TTree *ntuple = (TTree*)f->Get("ntuple");
    TH1F *f9=new TH1F("f9","ADC9",4000,0,4000);	 	 
       TCanvas * c2 = new TCanvas("c2", "c2",600 ,500);

c2->cd();

       Long64_t ne;

printf("%d \n", ne); //method 1 is reprate times single pulse charge

Double_t Qp1=0,Qp2=0;

       if(calc_meth == 1){	

//ntuple->Draw("ADC9*(1.22*1e-9)/50>>f9","1"); ntuple->Draw("ADC9>>f9"); //Qp2 = (f9->Integral())*(1.22*1e-9)/50; //charge calculate with method 2. //f9->Fit("gaus"); ADC9_fit_mean = f9->GetMean(1); //ADC9_fit_mean = ADC9->GetMean(1); printf("ADC9_fit_mean = %d \n",ADC9_fit_mean); Qp1 = ADC9_fit_mean*(1.22*1e-9)/50; //Qp: charge per pulse. The calibration: 1.22 (9nV s)/(ADC channel), 50 ohm Terminal. printf("QP1=%g\n\n",Qp1);

       printf("e- charge per pulse with method 1: %g\n",Qp1);

//printf("Reprate: %d\n",Reprate); Qs=Reprate*Qp1; //Qs: Charge per second. //printf("e- charge per second: %g\n",Qs); ne=Qs/Q_e; //Ne: number of electrons per second. }

if(calc_meth == 2){ //ntuple->Draw("ADC9*(1.22*1e-9)/50>>f9","1"); ntuple->Draw("ADC9>>f9"); printf("%bin# Bin Content%d\n"); for(i=1; i<=4000; i++){ //for(i=0; i<=600; i++){ bin_content[i] = f9->GetBinContent(i); //Qp2+=(i*(1.22*1e-9)/50)*bin_content[i]; Qp2+=i*bin_content[i]*(1.22*1e-9)/50; //printf("%d %d %g \n",i,bin_content[i],Qp2); }

//printf("Integral = %d \n",f9->Integral()); //Qp2 = (f9->Integral())*(1.22*1e-9)/50; //charge calculate with method 2. printf("QP2=%g\n\n",Qp2); printf("total e- charge in this run with method 2: %g\n",Qp2); //printf("Reprate: %d\n",Reprate); Qs=Qp2; //Qs: Charge per second. printf("e- charge per second: %g\n",Qs); printf("e- charge: %g\n",Q_e); ne=Qs/Q_e; //Ne: number of electrons per second.

    printf("1. total number of electrons in this run: %g\n",ne);

} printf("2. total number of electrons in this run: %g\n",ne); c2->Close(); f->Close(); return(ne); }

runs

NaI left

NaI right

run in

run out

NaI Left

NaI Right

NaI Left around 511 keV

NaI Right around 511 keV

e- rate (Hz)

e+ rate (Hz)

e+/e+ ratop

3735

3736

1.30499e+013

0.282966

2.16833e-014

1.30499e+013

0.282966

2.16833e-014

100 px

1.30499e+013

0.282966

2.16833e-014

100 px

1.30499e+013

0.282966

2.16833e-014

3737

3736

1.38182e+013

0.284036

2.05553e-014

1.38182e+013

0.284036

2.05553e-014

100 px

1.38182e+013

0.284036

2.05553e-014

100 px

1.38182e+013

0.284036

2.05553e-014