StFmsPi0Filter Class Reference

Inheritance diagram for StFmsPi0Filter:

Public Member Functions
	StFmsPi0Filter ()
int	RejectEG (const StGenParticleMaster &ptl) const
	Rejection inside of EventGenerator (Pythia)
int	RejectGT (const StGenParticleMaster &ptl) const
	Rejection of GEANT Tracking.
int	RejectGE (const StGenParticleMaster &ptl) const
	Rejection at GEANT End, No GEANT output.
void	ChangeConfig (string attr, float val)
Public Member Functions inherited from StMCFilter
	StMCFilter (const char *name)
virtual void	Finish () const
	Finish called at the end of GEANT.
const std::string &	GetName () const
double &	User (int idx)
	Return a reference to one of 10 user words.
double	User (int idx) const
	Returns one of the 10 user words.
virtual void	parseConfig (std::string key, float value)

Additional Inherited Members
Static Public Member Functions inherited from StMCFilter
static StMCFilter *	selected ()
	Returns a pointer to the selected filter.
Static Protected Member Functions inherited from StMCFilter
static int	GetNTotEG ()
	Number of total EG events.
static int	GetNTotGT ()
	Number of total GT events.
static int	GetNTotGE ()
	Number of total GE events.
static int	GetNRejEG ()
	Number of rejected GE events.
static int	GetNRejGT ()
	Number of rejected GT events.
static int	GetNRejGE ()
	Number of rejected GE events.
static void	FINISH ()
	Print of numbers above at the end of STARSIM.
Protected Attributes inherited from StMCFilter
std::string	fName
char	fBeg [1]
int	fCnt [3][2]
double	fUser [20]
char	fEnd [1]
Static Protected Attributes inherited from StMCFilter
static myMap_t *	mgMap =0

Detailed Description

Definition at line 20 of file StFmsPi0Filter.h.

Constructor & Destructor Documentation

StFmsPi0Filter::StFmsPi0Filter

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StMCFilter base class is :

1. A user interface. User must overload functions: a)RejectEG (StGenParticles &) ? called inside Pythia. Interaction point in (0,0,0); EG == EventGenerator b)RejectGT (StGenParticles &) ? called inside Geant before tracking. Interaction point generated by Geant; GT==GeantTracking c)RejectGE (StGenParticles &) ? called inside Geant after tracking; GE==GeantEnd
2. All three methods have exactly the same input arguments;
3. User must provide the unique name of the his filter. Selection of filter is based on this name.
4. Apart of that in this base class all the machinery of connection to Pythia and Geant is hidden
5. At the end Finish() is called. Print statistics. Could be overloaded

An argument of RejectXX(StGenParticles &Ptl) Class StGenParticles is a container class containing StGenParticle objects. Each object represents one particle(track). User methods of StGenParticles class:

1. Ptl.Size() ? number of particles;
2. Ptl(index) ? pointer to particle (StGenParticle*)
3. Ptl.Print() ? print all particles;
4. Ptl.Print(char* tit) ? print container

Class StGenParticle ideologically is based on HEPEVT standard http://cepa.fnal.gov/psm/simulation/mcgen/lund/pythia_manual/pythia6.3/pythia6301/node39.html

Methods:

• int GetStatusCode; /// 1= final particle
• int GetPdgCode; //PDG particle code
• int GetGeaCode(); //Geant particle code
• StGenParticle *GetMother(int i); //mother particle(0=beam,1=target)
• StGenParticle *GetDaughter(int i); //daughter ith particle
• double GetCalcMass (); //calculated mass
• double GetMass(); //mass
• int GetNDaughters
• void Momentum(double p4[4]); //four momentum
• void Vertex(double v[3]) //vertex in cm;
• double Time(); //time in cm
• int IsPrimary(); //Is this particle a primary one?
• int IsFinal () //Is this particle a final one?

Additional methods:

• double R (); //Rxy of vertex
• double Rho (); //Rxyz of vertex
• double P (); /// Full momentum
• double Pt (); //Transverse momentum
• double Energy();
• double Eta (); //Pseudo rapidity
• double Phi ();
• double Theta ();

          Filter kumac commands
  gexec $STAR_LIB/geometry.so
  gexec $STAR_LIB/libpythia_6410t.so
  gexec $STAR_LIB/bpythia.so
  gexec $STAR_LIB/StMCFilter.so
  gfilter filterName
  

  All three methods are called in a proper places. Method which is not overloaded, always returns zero (no rejection)

Definition at line 87 of file StFmsPi0Filter.cxx.

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The documentation for this class was generated from the following files:

• StMCFilter/StFmsPi0Filter.h
• StMCFilter/StFmsPi0Filter.cxx