checking the EPICS varible in Tree structure.

SCRIPTS/HMS/replay_epics_test.C

+void replay_epics_test(Int_t RunNumber=0, Int_t MaxEvent=0) {
+
+  // Get RunNumber and MaxEvent if not provided.
+  if(RunNumber == 0) {
+    cout << "Enter a Run Number (-1 to exit): ";
+    cin >> RunNumber;
+    if( RunNumber<=0 ) return;
+  }
+  if(MaxEvent == 0) {
+    cout << "\nNumber of Events to analyze: ";
+    cin >> MaxEvent;
+    if(MaxEvent == 0) {
+      cerr << "...Invalid entry\n";
+      exit;
+    }
+  }
+
+  // Create file name patterns.
+  const char* RunFileNamePattern = "raw/hms_all_%05d.dat";
+  const char* ROOTFileNamePattern = "ROOTfiles/epics_variable_replay_%d.root";
+  // Add variables to global list.
+  gHcParms->Define("gen_run_number", "Run Number", RunNumber);
+  gHcParms->AddString("g_ctp_database_filename", "DBASE/standard.database");
+
+  // Load varibles from files to global list.
+  gHcParms->Load(gHcParms->GetString("g_ctp_database_filename"), RunNumber);
+
+  // g_ctp_parm_filename and g_decode_map_filename should now be defined.
+  gHcParms->Load(gHcParms->GetString("g_ctp_kinematics_filename"), RunNumber);
+  gHcParms->Load(gHcParms->GetString("g_ctp_parm_filename"));
+
+  // Load params for HMS trigger configuration
+  gHcParms->Load("PARAM/TRIG/thms.param");
+
+  // Load the Hall C style detector map
+  gHcDetectorMap = new THcDetectorMap();
+  gHcDetectorMap->Load("MAPS/HMS/DETEC/hhodo_htrig.map");
+
+  // debug : testing epics variable in Ttree
+  // gHaEvtHandlers->Add (new THaEpicsEvtHandler("epics","HC EPICS event type 180"));
+  
+  // Set up the equipment to be analyzed.
+  THaApparatus* HMS = new THcHallCSpectrometer("H", "HMS");
+  gHaApps->Add(HMS);
+  // Add hodoscope to HMS apparatus
+  THcHodoscope* hod = new THcHodoscope("hod", "Hodoscope");
+  HMS->AddDetector(hod);
+
+  // Add trigger apparatus
+  THaApparatus* TRG = new THcTrigApp("T", "TRG");
+  gHaApps->Add(TRG);
+  // Add trigger detector to trigger apparatus
+  THcTrigDet* hms = new THcTrigDet("hms", "HMS Trigger Information");
+  TRG->AddDetector(hms);
+
+  // Add EPICS variables
+  //  THaEpics* epics = new THcEpics("T", "Epics");
+  //   gHaApps->AddDetector(epics);
+
+
+  // Set up the analyzer - we use the standard one,
+  // but this could be an experiment-specific one as well.
+  // The Analyzer controls the reading of the data, executes
+  // tests/cuts, loops over Acpparatus's and PhysicsModules,
+  // and executes the output routines.
+  THcAnalyzer* analyzer = new THcAnalyzer;
+
+  // A simple event class to be output to the resulting tree.
+  // Creating your own descendant of THaEvent is one way of
+  // defining and controlling the output.
+  THaEvent* event = new THaEvent;
+
+  // Define the run(s) that we want to analyze.
+  // We just set up one, but this could be many.
+  char RunFileName[100];
+  sprintf(RunFileName, RunFileNamePattern, RunNumber);
+  THaRun* run = new THaRun(RunFileName);
+
+  // Eventually need to learn to skip over, or properly analyze
+  // the pedestal events
+  run->SetEventRange(1, MaxEvent);    // Physics Event number, does not
+                                      // include scaler or control events.
+  run->SetNscan(1);
+  run->SetDataRequired(0x7);
+  run->Print();
+
+  // Define the analysis parameters
+  TString ROOTFileName = Form(ROOTFileNamePattern, RunNumber);
+  analyzer->SetCountMode(2);    // 0 = counter is # of physics triggers
+                                // 1 = counter is # of all decode reads
+                                // 2 = counter is event number
+ analyzer->SetEvent(event);
+ analyzer->SetCrateMapFileName("MAPS/db_cratemap.dat");
+ analyzer->SetOutFile(ROOTFileName.Data());
+ analyzer->SetOdefFile("DEF-files/HMS/HODO/hhodoana.def");
+ analyzer->SetCutFile("DEF-files/HMS/HODO/hhodoana_cuts.def");    // optional
+
+ analyzer->SetOdefFile("DEF-files/HMS/EPICS/epics.def");  // Call EPICS variables  K.Park
+
+ // File to record cuts accounting information
+ //analyzer->SetSummaryFile("summary_example.log");    // optional
+
+  // Start the actual analysis.
+  analyzer->Process(run);
+  // Create report file from template.
+  //analyzer->PrintReport(    // optional
+  //  "TEMPLATES/dcana.template",
+  //  Form("REPORT_OUTPUT/replay_hms_%05d.report", RunNumber)
+  //);
+}