A base class for describing clusters of EEMC towers. More...

#include <StEEmcCluster.h>

Inheritance diagram for StEEmcCluster:

Public Member Functions
	StEEmcCluster (const StEEmcCluster &other)

virtual	~StEEmcCluster ()

void	add (const StEEmcTower &t, Float_t weight=1.0)

Float_t	energy () const
	Get energy of this cluster.

Float_t	seedEnergy () const
	Get the energy of the seed tower.

TVector3	momentum () const

TVector3	position () const

Int_t	numberOfTowers () const
	Get the number of towers in cluster.

StEEmcTower &	tower (Int_t t)
	Get the specified tower within the cluster.

const StEEmcTower &	tower (Int_t t) const

Float_t	sigmaE () const

Float_t	weight (Int_t t) const
	Get the weight associated with tower.

StEEmcTowerVec_t &	towers ()
	Get the vector of towers in this cluster.

const StEEmcTowerVec_t &	towers () const

void	momentum (const TVector3 &p)

StEmcCluster *	stemc ()

void	stemc (StEmcCluster *c)
	Pointer to StEmcCluster for embedding.

Bool_t	operator== (const StEEmcCluster &other) const

void	print () const
	Prints cluster data.

void	printLine (Bool_t Endl=false) const

Bool_t	isNeighbor (const StEEmcTower &tower) const
	Returns true if tower is adjacent to any tower in the cluster.

Float_t	fracEtabin () const
	Returns the fractional mean etabin.

Float_t	fracPhibin () const
	Returns the fractional mean phibin.

Float_t	sigmaEtabin () const
	Returns the sigma (sqrt variance) in units of etabins.

Float_t	sigmaPhibin () const

Bool_t	hasTower (const StEEmcTower &tower) const
	Returns true if the specified tower is in the cluster.

Bool_t	operator< (const StEEmcCluster &other) const

Bool_t	operator> (const StEEmcCluster &other) const

Int_t	numberOfEtabins () const

Int_t	numberOfPhibins () const

void	add (StEEmcTower, Float_t weight=1.0)

Float_t	energy ()
	Get energy of this cluster.

Float_t	seedEnergy ()
	Get the energy of the seed tower.

TVector3	momentum ()
	Get the momentum of this cluster.

Int_t	numberOfTowers ()
	Get the number of towers in cluster.

StEEmcTower	tower (Int_t t)
	Get the specified tower.

StEEmcTower	tower (Int_t t) const

Float_t	weight (Int_t t)
	Get the weight associated with tower.

StEEmcTowerVec_t	towers ()
	Get the vector of towers in this cluster.

void	momentum (TVector3 p)
	Set the momentum of this cluster.

StEmcCluster *	stemc ()

void	stemc (StEmcCluster *c)

Int_t	key ()

void	key (Int_t k)

Bool_t	operator== (const StEEmcCluster &other) const

void	print ()

Public Member Functions inherited from StEEmcBaseCluster
Int_t	key () const

void	key (Int_t k)

Bool_t	split () const

void	split (Bool_t s)

void	addMatch (Int_t key, Int_t layer)

Int_t	numberOfMatchingClusters (Int_t layer) const

Int_t	getMatch (Int_t ith, Int_t layer) const

Float_t	energy () const

void	energy (Float_t e)

Int_t	numberOfElements () const

Protected Member Functions
	ClassDef (StEEmcCluster, 1)

	ClassDef (StEEmcCluster, 1)

Protected Member Functions inherited from StEEmcBaseCluster
	ClassDef (StEEmcBaseCluster, 1)

Protected Attributes
StEEmcTowerVec_t	mTowers
	Vector of towers.

std::vector< Float_t >	mWeights
	Vector of tower weights.

TVector3	mMomentum
	Momentum.

TVector3	mPosition

StEmcCluster *	mEmcCluster
	Pointer to EMC cluster.

Float_t	mfEtabin

Float_t	mfPhibin

Float_t	mSumEta2W

Float_t	mSumEtaW

Float_t	mSumPhi2W

Float_t	mSumPhiW

Int_t	mKey

Float_t	mEnergy
	Energy.

Protected Attributes inherited from StEEmcBaseCluster
Int_t	mKey

Bool_t	mSplit

std::vector< std::vector< Int_t > >	mMatched

Float_t	mEnergy

Int_t	mNumberOfElements

Detailed Description

A base class for describing clusters of EEMC towers.

This class is designed to represent EEMC tower clusters. By "tower cluster" I mean a cluster of StEEmcTower objects, which can in principle be clusters of tower, preshower or postshower elements.

Author: Jason C. Webb

Date:: 2010/08/26 22:49:25

Revision:: 1.8

Conventions

By convention, we assume that the first tower added to the cluster is the "seed" tower.

Each cluster should be assigned its own unique "key" by the maker which produces it.

This class makes no assumtion about the size and/or shape of the cluster.

Author: Jason C. Webb Jason.nosp@m..Web.nosp@m.b@Val.nosp@m.po.e.nosp@m.du

Class which represents a tower, preshower or postshwoer cluster. This class derives from StEEmcBaseCluster, which allows matching of clusters between layers by storing a unique cluster ID.

To build a cluster, one uses something like the following recipe

*
* StEEmcClusterVec_t list_of_clusters;
* StEEmcCluster cluster;
*
* // Get the seed tower from StEEmcA2EMaker 0=tower 1=pre1 2=pre2 3=post
* Int_t layer = 0;
* StEEmcTower tower = mEEanalysis -> tower( index_of_seed_tower, layer );
*
* // Loop over neighboring towers and add them to the cluster if they exceed
* // a specified threshold
* for ( Int_t i=0;i<tower.numberOfNeighbors();i++ )
* {
*    StEEmcTower neighbor=tower.neighbor(i);
*    if ( tower.energy() > threshold_to_add_tower )
*    {
*       cluster.add(neighbor);
*    }
* }
*
* // Add our cluster to the list of clusters
* list_of_clusters.push_back( cluster );
*
* 

Definition at line 50 of file StEEmcCluster.h.

Constructor & Destructor Documentation

StEEmcCluster::~StEEmcCluster ( )

virtual

If we have created an StEmcCluster, delete it

Definition at line 79 of file StEEmcCluster.cxx.

References mTowers, and mWeights.

Member Function Documentation

void StEEmcCluster::add	(	StEEmcTower	tower,
		Float_t	weight = `1.0`
	)

add a tower to this cluster. The code assumes that the first tower added is the seed tower, and hence is the most energetic.

Definition at line 19 of file StEEmcCluster.cxx.

References StEEmcElement::energy(), energy(), mEnergy, mTowers, and mWeights.

void StEEmcCluster::add	(	const StEEmcTower &	t,
		Float_t	weight = `1.0`
	)

add a tower to this cluster. The code assumes that the first tower added is the seed tower, and hence is the most energetic.

Definition at line 87 of file StEEmcCluster.cxx.

References StEEmcElement::energy(), energy(), StEEmcTower::etabin(), EEmcGeomSimple::getTowerCenter(), mEnergy, mfEtabin, mfPhibin, mMomentum, mTowers, mWeights, StEEmcTower::phibin(), print(), StEEmcTower::sector(), StEEmcTower::subsector(), and weight().

Referenced by StEEmcClusterMaker::buildTowerClusters(), and StEEmcPi0Analysis::Make().

TVector3 StEEmcCluster::momentum ( ) const

inline

Get the momentum of this cluster. The internally calculated momentum assumes z=0.

Definition at line 69 of file StEEmcCluster.h.

References mMomentum.

Referenced by StMyClusterMaker::buildSmdClusters(), StEEmc2x2ClusterMaker::buildSmdClusters(), StEEmcClusterMaker::buildTowerClusters(), StEEmcClusterMaker::fillStEvent(), StMyPointMaker::Make(), and stemc().

void StEEmcCluster::momentum ( const TVector3 & p )

inline

Set the momentum of this cluster. This overrides the momentum computed internally as towers are added to the cluster. If the momentum is changed before all towers are added, the position() of the cluster will become unreliable.

Definition at line 96 of file StEEmcCluster.h.

References mMomentum.

Bool_t StEEmcCluster::operator== ( const StEEmcCluster & other ) const

inline

Tests whether the cluster has the same seed tower as another cluster. If so, these clusters are considered equal

Definition at line 108 of file StEEmcCluster.h.

References StEEmcTower::index(), and tower().

TVector3 StEEmcCluster::position ( ) const

inline

Get the position of this cluster on the endcap. But see note for StEEmcCluster::momentum( TVector3 p ).

Definition at line 73 of file StEEmcCluster.h.

Float_t StEEmcCluster::sigmaE ( ) const

Returns the std. deviation in the energy of the towers which make up the cluster.

Definition at line 213 of file StEEmcCluster.cxx.

References StEEmcElement::energy(), mTowers, and mWeights.

StEmcCluster* StEEmcCluster::stemc ( )

Create and return an StEmcCluster using this cluster's hits, energy, etc... The StEmcCluster will be deleted when this cluster's destructor is called.

StEmcCluster * StEEmcCluster::stemc ( )

Create and return an StEmcCluster using this cluster's hits, energy, etc... The StEmcCluster will be deleted when this cluster's destructor is called.

Definition at line 138 of file StEEmcCluster.cxx.

References energy(), mEmcCluster, momentum(), mTowers, and numberOfTowers().

Referenced by StEEmcClusterMaker::fillStEvent().

Member Data Documentation

Float_t StEEmcCluster::mfEtabin

protected

Fractional mean etabin * energy

Definition at line 149 of file StEEmcCluster.h.

Referenced by add(), and fracEtabin().

Float_t StEEmcCluster::mfPhibin

protected

Fractional mean phibin * energy

Definition at line 150 of file StEEmcCluster.h.

Referenced by add(), and fracPhibin().

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

StEEmcPool/StEEmcClusterMaker/StEEmcCluster.h
StEEmcPool/StMaxStripPi0/StEEmcCluster.h
StEEmcPool/StEEmcClusterMaker/StEEmcCluster.cxx
StEEmcPool/StMaxStripPi0/StEEmcCluster.cxx

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Conventions

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation