JSFMergeEvent

class JSFMergeEvent : public JSFModule

    public:

                      JSFMergeEvent(const Char_t* name = "JSFMergeEvent", const Char_t* title = "Read/Write Background data", const Char_t* opt)
                      JSFMergeEvent(const JSFMergeEvent&)
              virtual ~JSFMergeEvent()
       virtual Bool_t BeginRun(Int_t nrun = 0)
       static TClass* Class()
       virtual Bool_t EndRun()
              Char_t* GetDataFileName()
       virtual Bool_t Initialize()
      virtual TClass* IsA() const
                 void PrintRandomSeed()
       virtual Bool_t Process(Int_t ev = 1)
                 void ReadRandomSeed(const Char_t* filename)
                 void SetDataFileName(Char_t* name)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
                 void WriteRandomSeed(const Char_t* filename)

Data Members

    protected:

      PythiaGenerator* fPythiaGenerator    ! Pointer to input data
          JSFQuickSim* fJSFQuickSim        ! Pointer to input data.
                Char_t fDataFileName[256]  ! File name of inpufile;
               Float_t fLumPerTrain        Luminosity per train ( 1/nb )
               Float_t fNumAverage         Averaged number of background event.
                 Int_t fNumEvent           Total number of event in the file.
                 Int_t fRandomSeed         Seed of random number.

Class Description

 JSFMergeEvent

 Merge background event data to signal event.
 Purpose of this class is to merge events which are prepared in a root file
 by another run.  This can be used, for eacmple, to overly two-photon
 background events on another signal events.  Current version is designed so as
 to merge background events generated by PythiaGenerator class and JSFQuickSim class.
 When this object is included, event data of PythiaGenerator  and JSFQuickSim
 from a background data file are merged.


(Parameters)
 Environment parameters and its default values are as follows.

 # A name of Background data file.
  JSFMergeEvent.DataFile     simdst.dat
 #
 # Luminosity per bunch train in unit of  1/nb (nano barn invers).
 # Default value of 0.06 corresponds to collider luminosity
 # of 9x10^{33} / cm^2 sec operated at RF pulse frequency of 150 Hz.
  JSFMergeEvent.LumPerTrain  0.06
 #
 # Seed of random number.  Since This class uses gRandom variable, it random
 # seed will be mixed up, if gRandom is used another place.
  JSFMergeEvent.RandomSeed   1990729
 #

 In JSFMergeEvent::Process(), the number background events are generated
 according to the poisson distribution.  That number of events are picked up
 from the DataFile and their event data are appended into current event record.

$Id: JSFMergeEvent.cxx,v 1.4 2001/11/06 07:36:08 miyamoto Exp $

 JSFMergeEvent constructor.

 Here we open a file and set branch from where merged event is read in.

Inline Functions

              Char_t* GetDataFileName()
                 void SetDataFileName(Char_t* name)
              TClass* Class()
              TClass* IsA() const
                 void ShowMembers(TMemberInspector& insp, char* parent)
                 void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
        JSFMergeEvent JSFMergeEvent(const JSFMergeEvent&)