Package xal.model.elem

Class Marker

java.lang.Object

xal.model.elem.Element

xal.model.elem.ThinElement

xal.model.elem.Marker

All Implemented Interfaces:

IComponent, IElement

public class Marker
extends ThinElement

This class is used as a location marker in the modeling lattice. Is has no length and no effect on the dynamics of any probe.

Author:

Christopher Allen

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE	type string identifier for all Marker objects

Fields inherited from class xal.model.elem.Element

dblNodeLen, dblNodePos

Fields inherited from interface xal.model.IElement

LIGHT_SPEED, PERMEABILITY, PERMITTIVITY, UNIT_CHARGE

Constructor Summary

Constructors

Constructor	Description
Marker()	JavaBean constructor - creates a new uninitialized instance of Marker BE CAREFUL
Marker(String strId)	Creates a new instance of Marker

Method Summary

Modifier and Type	Method	Description
double	elapsedTime(IProbe probe)	Returns the time taken for the probe to propagate through element.
double	energyGain(IProbe probe)	Returns energy gain which is zero.
protected PhaseMap	transferMap(IProbe probe)	Returns the transfer map of this element which is the identity.

Methods inherited from class xal.model.elem.ThinElement

applyErrors, elapsedTime, energyGain, getLength, longitudinalPhaseAdvance, longitudinalPhaseAdvance, transferMap

Methods inherited from class xal.model.elem.Element

addCloseElements, backPropagate, backPropagate, compDriftingTime, compProbeLocation, getAlignX, getAlignY, getAlignZ, getCloseElements, getHardwareNodeId, getId, getLatticePosition, getNodeLen, getNodePos, getParent, getPhiX, getPhiY, getPhiZ, getPosition, getType, getUID, initializeFrom, print, propagate, propagate, setAlign, setAlignX, setAlignY, setAlignZ, setHardwareNodeId, setId, setParent, setPhiX, setPhiY, setPhiZ, setPosition, toString

Methods inherited from class java.lang.Object

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

Field Details

TYPE

public static final String TYPE

type string identifier for all Marker objects

See Also:

• Constant Field Values

Constructor Details

Marker

public Marker(String strId)

Creates a new instance of Marker

Parameters:

strId - identifier of this object

Marker

public Marker()

JavaBean constructor - creates a new uninitialized instance of Marker BE CAREFUL

Method Details

elapsedTime

public double elapsedTime(IProbe probe)

Returns the time taken for the probe to propagate through element.

Specified by:

elapsedTime in class ThinElement

Parameters:

probe - propagating probe

Returns:

the value zero

energyGain

public double energyGain(IProbe probe)

Returns energy gain which is zero.

Specified by:

energyGain in class ThinElement

Parameters:

probe - dummy argument

Returns:

returns zero

transferMap

protected PhaseMap transferMap(IProbe probe)
                        throws PropagationException

Returns the transfer map of this element which is the identity.

Specified by:

transferMap in class ThinElement

Parameters:

probe - dummy argument

Returns:

the identity phase map

Throws:

PropagationException - this should not occur