#include <stdlib.h>#include <TSQLServer.h>#include <TSQLResult.h>#include <TSQLRow.h>Go to the source code of this file.
Functions | |
| Double_t | BeamEnergyOnline (Int_t) |
| void | tau_mode (int flag=0) |
| Double_t BeamEnergyOnline | ( | Int_t | ) |
Definition at line 236 of file tau_mode.c.
Referenced by tau_mode().
00237 { 00238 Double_t dbe = 0; // initialization 00239 00240 // connect to the BESIII database 00241 TSQLServer *db = TSQLServer::Connect("mysql://bes3db2.ihep.ac.cn", "guest", "guestpass"); 00242 // printf("Server info: %s\n", db->ServerInfo()); 00243 00244 //Int_t runno = 33743; 00245 //read beam energy from the online database 'run' 00246 const char *ins = "select BER_PRB from run.RunParams where run_number = %d"; 00247 char sql[4096]; 00248 sprintf(sql, ins, runno); 00249 TSQLResult *res = db->Query(sql); 00250 if (res->GetRowCount() == 0) { // not found 00251 printf("Cannot find the beam energy of run %d from the database.\n", runno); 00252 delete res; 00253 delete db; 00254 return dbe; 00255 } 00256 TSQLRow *row = res->Next(); 00257 TString sbe = row->GetField(0); // beam energy of electron 00258 dbe = atof(sbe); // convert string to float 00259 // printf("beam energy is : %5.3f\n", dbe); 00260 delete row; 00261 delete res; 00262 delete db; 00263 00264 return dbe; 00265 }
| void tau_mode | ( | int | flag = 0 |
) |
Definition at line 16 of file tau_mode.c.
References BeamEnergyOnline(), cut, exp(), f1, genRecEmupikp::i, ganga-rec::j, phi1, phi2, check_raw_filter::runno, and x.
00017 { 00018 //Reset root 00019 gROOT->Reset(); 00020 00021 //Get the root file and E_cms 00022 TFile *f1 = new TFile("YYYY/m_root_dir/LumTau_XXXX.root"); 00023 TTree *data =event; 00024 00025 if (flag!=0) 00026 { 00027 //Define the canvas 00028 TCanvas *myCanvas = new TCanvas(); 00029 myCanvas->Divide(1,1); 00030 TPad *c1_1 = new TPad("c1_1", "c1_1",0.01,0.01,0.99,0.99); 00031 c1_1->Draw(); 00032 c1_1->cd(); 00033 c1_1->Range(0.425458,-114.842,0.674993,802.951); 00034 c1_1->SetBorderSize(2); 00035 c1_1->SetBottomMargin(0.125129); 00036 c1_1->SetFrameFillColor(0); 00037 } 00038 00039 //Initialize the variables and set the branches' address 00040 Int_t run = 0; 00041 Double_t time = 0.0,dltphi = 0.0,costht1 = 0.0,costht2 = 0.0,e1 = 0.0,e2 = 0.0,etot = 0.0,phi1 = 0.0,phi2 = 0.0; 00042 Int_t nentries = 0; 00043 00044 data->SetBranchAddress("run",&run); 00045 data->SetBranchAddress("time",&time); 00046 data->SetBranchAddress("dltphi",&dltphi); 00047 data->SetBranchAddress("costht1",&costht1); 00048 data->SetBranchAddress("costht2",&costht2); 00049 data->SetBranchAddress("e1",&e1); 00050 data->SetBranchAddress("e2",&e2); 00051 data->SetBranchAddress("etot",&etot); 00052 data->SetBranchAddress("phi1",&phi1); 00053 data->SetBranchAddress("phi2",&phi2); 00054 00055 data->GetEntry(0); 00056 Int_t runno = run; 00057 Double_t E_cms = 2*BeamEnergyOnline(run); 00058 cout << "E_cms = " << E_cms << endl; 00059 00060 nentries = (Int_t)data->GetEntries(); 00061 00062 Double_t timemin = 0.0,timemax = 0.0; 00063 data->GetEntry(0); 00064 timemin = time; 00065 data->GetEntry((nentries - 1)); 00066 timemax = time; 00067 Double_t difft = timemax-timemin; 00068 00069 Double_t dlt = 0.0,mean = 0.0,width = 0.0; 00070 Double_t luminitial = 0.; 00071 Double_t tau = 5000.; 00072 00073 if (difft<300.) 00074 cout << "\nRuntime less than 300 " << endl; 00075 else 00076 { 00077 //Fill the histogram of dltphi distribution 00078 TH1F *dltphi1 = new TH1F("dltphi1","dltphi",150,-30,30); 00079 for (Int_t i = 0;i<nentries;i++) 00080 { 00081 data->GetEntry(i); 00082 bool cut = (e1/E_cms)>0.417&&(e1/E_cms)<0.491&&(e2/E_cms)>0.417&&(e2/E_cms)<0.491 00083 &&fabs(costht1)<0.8&&fabs(costht2)<0.8 00084 &&etot<E_cms+0.5; 00085 if (cut) 00086 { 00087 dltphi1->Fill(dltphi); 00088 } 00089 } 00090 00091 //Fit the Di-photon peak and get the value of dlt 00092 TF1* h1=new TF1("h1","gaus",-6,4); 00093 dltphi1->Fit(h1,"R+"); 00094 dlt = h1->GetParameter(1); 00095 00096 //Fit the Bhabha peak and get the values of mean and width 00097 TF1* h2=new TF1("h2","gaus",4,30); 00098 dltphi1->Fit(h2,"R+"); 00099 mean = h2->GetParameter(1); 00100 Double_t sigma = h2->GetParameter(2); 00101 width = 3*sigma; 00102 00103 if (dlt<-6||dlt>4||mean<4||mean>30||(mean-dlt)-0.5*width<0) 00104 cout << "\nSomething wrong with cut Bhabha entries. " << endl; 00105 else 00106 { 00107 //Get 11 time nodes 00108 Double_t xtime[11],lum[10]; 00109 for(Int_t i=0;i<11;i++) 00110 { 00111 xtime[i]=timemin+(difft/10.)*i; 00112 } 00113 00114 00115 //Get 10 histograms of dltphi distribution between time nodes 00116 TH1D *hdltphi[10]; 00117 for(Int_t i=0;i<10;i++) 00118 { 00119 hdltphi[i] = new TH1D("","dltphi distribution",50,-50.,50.); 00120 } 00121 TH1 *htime = new TH1D("htime","time", 80, -10., 10.); 00122 00123 for(Int_t i=0;i<10;i++) 00124 { 00125 for(Int_t j=0;j<nentries;j++) 00126 { 00127 data->GetEntry(j); 00128 bool lumcut = (e1/E_cms)>0.417&&(e2/E_cms)>0.417&&fabs(costht1)<0.8&& 00129 fabs(costht2)<0.8&&fabs(dltphi-dlt)>(mean-dlt)-width&& 00130 fabs(dltphi-dlt)<(mean-dlt)+width&&etot<E_cms+0.5; 00131 if(lumcut&&time>xtime[i]&&time<xtime[i+1]) 00132 { 00133 hdltphi[i]->Fill(dltphi); 00134 } 00135 } 00136 } 00137 00138 //Get the average luminosity between time nodes 00139 Int_t nevt[10]; 00140 Double_t x[10]; 00141 for(Int_t i=0;i<10;i++) 00142 { 00143 nevt[i] = hdltphi[i]->GetEntries(); 00144 x[i]=xtime[i+1]-xtime[0]; 00145 lum[i]=nevt[i]; 00146 } 00147 00148 //Set draw options and fit the luminosity curve 00149 TCanvas *c2 = new TCanvas("c2"," ",700,500); 00150 c2->SetFillColor(kWhite); 00151 c2->SetGrid(); 00152 00153 Int_t imin; 00154 for(Int_t i=0;lum[i]<lum[i+1];i++) 00155 { 00156 imin = i+1; 00157 } 00158 Double_t lummax = lum[imin]; 00159 Double_t xmin = x[imin]; 00160 Double_t lumsum; 00161 for(Int_t i=imin;i<10;i++) 00162 { 00163 lumsum += lum[i]; 00164 } 00165 Double_t lumsum2 = lumsum*lumsum; 00166 00167 const Int_t n = 10; 00168 TF1 *g1 = new TF1("g1","[0]*exp(-x/[1])",xmin,10000.); 00169 g1->SetParameters(lummax,1e+4.); 00170 g1->SetLineColor(2); 00171 TGraph* gr = new TGraph(n,x,lum); 00172 gr->SetLineColor(2); 00173 gr->SetLineWidth(2); 00174 gr->SetMarkerColor(4); 00175 gr->SetMarkerStyle(21); 00176 gr->SetTitle("BbLum"); 00177 gr->GetXaxis()->SetTitle("Time"); 00178 gr->GetYaxis()->SetTitle("Luminosity"); 00179 gr->Fit("g1","R"); 00180 gr->Draw("ap"); 00181 00182 //pick the fit result 00183 luminitial = g1->GetParameter(0); 00184 tau = g1->GetParameter(1); 00185 } 00186 } 00187 00188 00189 if (tau>99999.) 00190 { 00191 cout << "\nThe result of fit is terrible. " << endl << endl; 00192 cout << "set the tau value = 99999" << endl; 00193 tau = 99999; 00194 } 00195 00196 if (difft<0.) 00197 { 00198 cout << "\nThe runtime is minus." << endl << endl; 00199 difft = fabs(difft); 00200 } 00201 00202 //Export the fit result 00203 std::ofstream m_outputFile; 00204 m_outputFile.open("YYYY/m_txt_dir/LumTau_XXXX.txt", ios_base::app); 00205 m_outputFile<< runno <<" "<<difft<<" "<<luminitial<<" "<<(luminitial * exp(- 1.0 * difft / (tau)))<<" "<< tau <<endl; 00206 m_outputFile.close(); 00207 00208 if (flag!=0) 00209 { 00210 //Get the value of tau and print it 00211 TString result = Form("tau = %6.2f",tau); 00212 TText* text01 = new TText(0.7,0.8,result); 00213 text01->SetNDC(); 00214 text01->Draw("same"); 00215 c2->Update(); 00216 c2->GetFrame()->SetFillColor(kWhite); 00217 c2->GetFrame()->SetBorderSize(1); 00218 c2->Modified(); 00219 c2->Print("lum_0000XXXX.ps"); 00220 } 00221 00222 if (flag!=0) 00223 { 00224 //Print some parameters 00225 cout << "E_cms = " << E_cms << endl; 00226 cout << "\nruntime = " << difft << endl; 00227 cout << "\ndlt = " << dlt << endl; 00228 cout << "mean = " << mean << endl; 00229 cout << "width = " << width << endl; 00230 cout << "\ntau = " << tau << endl << endl; 00231 } 00232 }
1.4.7