Package org.jlab.rec.dc.trajectory

Class Vertex

java.lang.Object

org.jlab.rec.dc.trajectory.Vertex

public class Vertex
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static double	SMEARING_FAC

Constructor Summary

Constructors

Constructor	Description
Vertex()

Method Summary

Modifier and Type	Method	Description
void	resetTrackAtRasterRadius(DataEvent event, Track thecand)
double	vertexEstimator(DataEvent event)
double[]	VertexParams(double x, double y, double z, double px, double py, double pz, double Q, double Bfield, double xb, double yb)

Methods inherited from class java.lang.Object

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

Field Details

SMEARING_FAC

public static double SMEARING_FAC

Constructor Details

Vertex

public Vertex()

Method Details

vertexEstimator

public double vertexEstimator(DataEvent event)

Parameters:

event - HipoDataEvent

Returns:

the vertex from MC at the raster radius estimated from MC

resetTrackAtRasterRadius

public void resetTrackAtRasterRadius(DataEvent event,
 Track thecand)

Parameters:

event - HipoDataEvent

thecand - The track candidate

VertexParams

public double[] VertexParams(double x,
 double y,
 double z,
 double px,
 double py,
 double pz,
 double Q,
 double Bfield,
 double xb,
 double yb)

Parameters:

x - track x

y - track y

z - track z

px - track pz

py - track py

pz - track pz

Q - track charge

Bfield - B at track x,y,z

xb - beam axis x

yb - beam axis y

Returns:

vertex reconstructed at the distance of closest approach to the beam axis