org.lcsim.recon.tracking.trfxyp

Class ThinXYPlaneMs

java.lang.Object

org.lcsim.recon.tracking.trfbase.Interactor

org.lcsim.recon.tracking.trfxyp.ThinXYPlaneMs

public class ThinXYPlaneMs
extends Interactor

Class for modifying the covariance matrix of a track to account for multiple scattering at a thin XY-plane whose material is represented by the number of radiation lengths.

Version:

1.0

Author:

Norman A. Graf

Field Summary

Fields

Modifier and Type	Field and Description
private double	_radLength
private static int	IDVDU
private static int	IDZDU
private static int	IQP
private static int	IV
private static int	IZ

Constructor Summary

Constructors

Constructor and Description
ThinXYPlaneMs(double radLength) Construct an instance from the number of radiation lengths of the thin xy plane material.

Method Summary

Methods

Modifier and Type	Method and Description
void	interact_dir(ETrack tre, PropDir dir)
void	interact(ETrack tre) Interact the given track in this xy plane, using the thin material approximation for multiple scattering.
Interactor	newCopy() Make a clone of this object.
double	radLength() Return the number of radiation lengths.
static String	staticType() Return a String representation of the class' type name.
String	toString() output stream
String	type() Return a String representation of the class' type name.
static String	typeName() Return a String representation of the class' type name.

Methods inherited from class java.lang.Object

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

Field Detail

IV

private static final int IV

See Also:

Constant Field Values

IZ

private static final int IZ

See Also:

Constant Field Values

IDVDU

private static final int IDVDU

See Also:

Constant Field Values

IDZDU

private static final int IDZDU

See Also:

Constant Field Values

IQP

private static final int IQP

See Also:

Constant Field Values

_radLength

private double _radLength

Constructor Detail

ThinXYPlaneMs

public ThinXYPlaneMs(double radLength)

Construct an instance from the number of radiation lengths of the thin xy plane material. The Interactor is constructed with the appropriate number of radiation lengths.

Parameters:

radLength - The thickness of the material in radiation lengths.

Method Detail

typeName

public static String typeName()

Return a String representation of the class' type name. Included for completeness with the C++ version.

Returns:

A String representation of the class' type name.

staticType

public static String staticType()

Return a String representation of the class' type name. Included for completeness with the C++ version.

Returns:

A String representation of the class' type name.

interact

public void interact(ETrack tre)

Interact the given track in this xy plane, using the thin material approximation for multiple scattering. Note that the track parameters are not modified. Only the covariance matrix is updated to reflect the uncertainty caused by traversing the thin xy plane of material.

Specified by:

interact in class Interactor

Parameters:

tre - The ETrack to scatter.

interact_dir

public void interact_dir(ETrack tre,
                PropDir dir)

radLength

public double radLength()

Return the number of radiation lengths.

Returns:

The thickness of the scattering material in radiation lengths.

newCopy

public Interactor newCopy()

Make a clone of this object.

Specified by:

newCopy in class Interactor

Returns:

A Clone of this instance.

type

public String type()

Return a String representation of the class' type name. Included for completeness with the C++ version.

Returns:

A String representation of the class' type name.

toString

public String toString()

output stream

Overrides:

toString in class Object

Returns:

A String representation of this instance.