org.lcsim.emcluster
Class EMCluster

java.lang.Object
  hep.lcd.recon.cluster.util.AbstractCluster
      org.lcsim.emcluster.EMCluster

All Implemented Interfaces:

hep.lcd.event.Cluster, java.io.Serializable

public class EMCluster

extends hep.lcd.recon.cluster.util.AbstractCluster

A class encapsulating the behavior of an electromagnetic cluster.

Author:

Norman A. Graf

See Also:

Serialized Form

Field Summary

Fields inherited from class hep.lcd.recon.cluster.util.AbstractCluster

hits

Constructor Summary

EMCluster(hep.lcd.geometry.CalorimeterCell cell, Lorentz4Vector vec, java.util.Vector members, int layers, double samplingFraction)
Fully qualified constructor

Method Summary

void	calculateVec() Calculate the cluster four-momentum.
java.util.Vector	cells() The constituent cells
double[]	centroid() The unweighted spatial centroid (x,y,z) of the cluster line fit
double	chisq()
double	clusterEnergy() The cluster energy corrected for sampling fractions
double[]	directionCosines() The direction cosines of the cluster line fit
double	highestCellEnergy() The energy of the highest energy cell in this cluster
hep.lcd.event.CalorimeterHit	hottestCell() The CalorimeterHit in this cluster with the highest energy
boolean	isEndCap() Returns topological position of cluster.
boolean	isNorth() Returns topological position of cluster.
double[]	layerEnergies() The cluster layer energies
double	layerEnergy(int layer) The cluster energy deposited in a specific layer
double	layerWidth(int layer) The cluster width (energy second moment) deposited in a specific layer
void	setChisq(double chisq)
java.lang.String	toString() Output stream
Lorentz4Vector	vector() The cluster four-momentum
double	width() The cluster width (energy second moment).

Methods inherited from class hep.lcd.recon.cluster.util.AbstractCluster

addHit, calculateDerivedQuantities, calculateEnergyTensor, getAverageLayerEnergy, getAverageLayerHits, getCE, getCenterofEnergy, getCERadius, getClusterEnergy, getClusterStartDepth, getContributedEnergy, getEEM, getEHAD, getEigenvectors, getEnergy, getEnergyPhi, getEnergyRadius, getEnergyTheta, getHits, getInnerMostHitLayer, getMCParticles, getNE, getNHits, getNormalizedEigenvalues, getOuterMostHitLayer, getPrincipalAxes, getRMSPhi, getRMSRadius, getRMSTheta, getScaledContributedEnergy, setNoTrace, setTrace

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

EMCluster

public EMCluster(hep.lcd.geometry.CalorimeterCell cell,
                 Lorentz4Vector vec,
                 java.util.Vector members,
                 int layers,
                 double samplingFraction)

Fully qualified constructor

Parameters:

cell - The CalorimeterCell used for indexing

vec - The Lorentz four-vector

members - A Vector of CalorimeterHits

layers - The number of layers in the EM Calorimeter

samplingFraction - The conversion from measured to deposited energy

Method Detail

calculateVec

public void calculateVec()

Calculate the cluster four-momentum. The Lorentz four-vector is derived from the cluster cells.

width

public double width()

The cluster width (energy second moment).

Returns:

The cluster width

vector

public Lorentz4Vector vector()

The cluster four-momentum

Returns:

The Lorentz four-vector

cells

public java.util.Vector cells()

The constituent cells

Returns:

Vector of the CalorimeterHits constituting the cluster.

layerEnergy

public double layerEnergy(int layer)

The cluster energy deposited in a specific layer

Returns:

The cluster energy in layer layer

layerEnergies

public double[] layerEnergies()

The cluster layer energies

Returns:

The array of cluster energies in each layer.

clusterEnergy

public double clusterEnergy()

The cluster energy corrected for sampling fractions

Returns:

The cluster energy

highestCellEnergy

public double highestCellEnergy()

The energy of the highest energy cell in this cluster

Returns:

The energy of the highest energy cell in this cluster corrected by the sampling fraction.

hottestCell

public hep.lcd.event.CalorimeterHit hottestCell()

The CalorimeterHit in this cluster with the highest energy

Returns:

The CalorimeterHit in this cluster with the highest energy

layerWidth

public double layerWidth(int layer)

The cluster width (energy second moment) deposited in a specific layer

Returns:

The cluster width in layer layer

centroid

public double[] centroid()

The unweighted spatial centroid (x,y,z) of the cluster line fit

Returns:

The unweighted spatial centroid (x,y,z) of the cluster

directionCosines

public double[] directionCosines()

The direction cosines of the cluster line fit

Returns:

The direction cosines of the cluster

isEndCap

public boolean isEndCap()

Returns topological position of cluster.

Returns:

true if in EndCap

isNorth

public boolean isNorth()

Returns topological position of cluster.

Returns:

true if in "North" EndCap

setChisq

public void setChisq(double chisq)

chisq

public double chisq()

toString

public java.lang.String toString()

Output stream

Returns:

String representation of the cluster