org.lcsim.recon.tracking.trfxyp

Class PropXYXYBX

java.lang.Object

org.lcsim.recon.tracking.trfbase.Propagator

org.lcsim.recon.tracking.trfbase.PropDirected

org.lcsim.recon.tracking.trfxyp.PropXYXYBX

public class PropXYXYBX
extends PropDirected

Propagates tracks from one XYPlane to another in a constant field. Magnetic field is in x^ direction

Propagation will fail if either the origin or destination is not an XYPlane.

Version:

1.0

Author:

Norman A. Graf

Field Summary

Fields

Modifier and Type	Field and Description
private double	_bfac
private boolean	debug
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
PropXYXYBX(double bfield) Construct an instance from a constant solenoidal magnetic field in Tesla.

Method Summary

Methods

Modifier and Type	Method and Description
double	bField() Return the strength of the magnetic field in Tesla.
private double	direction(int flag_forward, double w, double r_sinalf, double r_cosalf, double b1, double u_n, double u, int sign_du, double sinphi, double cosphi)
Propagator	newPropagator() Clone an instance.
private double	next1(double phi, double amp, double w)
private double	nextMax(double phi)
private double	nextMin(double phi)
private double	nextZero(double phi)
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.
PropStat	vecDirProp(VTrack trv, Surface srf, PropDir dir) Propagate a track without error in the specified direction.
PropStat	vecDirProp(VTrack trv, Surface srf, PropDir dir, TrackDerivative deriv) Propagate a track without error in the specified direction and return the derivative matrix in deriv.
(package private) PropStat	vecPropagateXYXYBX(double B, VTrack trv, Surface srf, PropDir dir, TrackDerivative deriv)

Methods inherited from class org.lcsim.recon.tracking.trfbase.PropDirected

direction, direction, errProp, vecProp

Methods inherited from class org.lcsim.recon.tracking.trfbase.Propagator

errDirProp, errDirProp, errProp, reduce, reduceDirection, vecProp

Methods inherited from class java.lang.Object

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

Field Detail

_bfac

private double _bfac

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

debug

private boolean debug

Constructor Detail

PropXYXYBX

public PropXYXYBX(double bfield)

Construct an instance from a constant solenoidal magnetic field in Tesla.

Parameters:

bfield - The magnetic field strength in Tesla.

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.

newPropagator

public Propagator newPropagator()

Clone an instance.

Specified by:

newPropagator in class Propagator

Returns:

A Clone of this instance.

vecDirProp

public PropStat vecDirProp(VTrack trv,
                  Surface srf,
                  PropDir dir,
                  TrackDerivative deriv)

Propagate a track without error in the specified direction and return the derivative matrix in deriv.

Specified by:

vecDirProp in class Propagator

Parameters:

trv - The VTrack to propagate.

srf - The Surface to which to propagate.

dir - The direction in which to propagate.

deriv - The track derivatives to update at the surface srf.

Returns:

The propagation status.

vecDirProp

public PropStat vecDirProp(VTrack trv,
                  Surface srf,
                  PropDir dir)

Propagate a track without error in the specified direction.

Overrides:

vecDirProp in class Propagator

Parameters:

trv - The VTrack to propagate.

srf - The Surface to which to propagate.

dir - The direction in which to propagate.

Returns:

The propagation status.

bField

public double bField()

Return the strength of the magnetic field in Tesla.

Returns:

The strength of the magnetic field in Tesla.

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.

direction

private double direction(int flag_forward,
               double w,
               double r_sinalf,
               double r_cosalf,
               double b1,
               double u_n,
               double u,
               int sign_du,
               double sinphi,
               double cosphi)

nextMin

private double nextMin(double phi)

nextMax

private double nextMax(double phi)

nextZero

private double nextZero(double phi)

next1

private double next1(double phi,
           double amp,
           double w)

vecPropagateXYXYBX

PropStat vecPropagateXYXYBX(double B,
                          VTrack trv,
                          Surface srf,
                          PropDir dir,
                          TrackDerivative deriv)