org.lcsim.util.swim

Class HelixYField

java.lang.Object

org.lcsim.util.swim.Helix

org.lcsim.util.swim.HelixYField

All Implemented Interfaces:

Trajectory

public class HelixYField
extends Helix

Helix for swimming in Y B-field.

Author:

Jeremy McCormick

Field Summary

Fields inherited from class org.lcsim.util.swim.Helix

cosLambda, cosPhi, origin, phi, radius, sinLambda, sinPhi, xCenter, yCenter

Constructor Summary

Constructors

Constructor and Description
HelixYField(Hep3Vector org, double r, double p, double lambda)

Method Summary

Methods

Modifier and Type	Method and Description
private CartesianPoint	getLabPoint(CartesianPoint pos)
SpacePoint	getPointAtDistance(double alpha) returns a point on the Helix at a distance alpha from the origin along the trajectory.

Methods inherited from class org.lcsim.util.swim.Helix

getCenterXY, getDistanceToInfiniteCylinder, getDistanceToPoint, getDistanceToPolyhedra, getDistanceToXYPosition, getDistanceToZPlane, getRadius, getSecondDistanceToInfiniteCylinder, getSignedClosestDifferenceToPoint, getTangentAtDistance, getUnitTangentAtLength, getZPeriod, setExtrapToPointPrecision

Methods inherited from class java.lang.Object

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

Constructor Detail

HelixYField

public HelixYField(Hep3Vector org,
           double r,
           double p,
           double lambda)

Method Detail

getPointAtDistance

public SpacePoint getPointAtDistance(double alpha)

Description copied from class: Helix

returns a point on the Helix at a distance alpha from the origin along the trajectory. alpha == 2*PI*radius/cos(lambda) is one rotation in the x-y plane

Specified by:

getPointAtDistance in interface Trajectory

Overrides:

getPointAtDistance in class Helix

getLabPoint

private CartesianPoint getLabPoint(CartesianPoint pos)