Class SwimZResult

java.lang.Object

cnuphys.swimZ.SwimZResult

public class SwimZResult
extends Object

Holds the result of a swimZ integration

Author:

heddle

Constructor Summary

Constructors

Constructor	Description
SwimZResult(int Q, double p, double zo, double zf, int capacity)	Constructor Create a SwimZResult with the trajectory initialized but empty.

Method Summary

Modifier and Type	Method	Description
protected void	add(SwimZStateVector vector)	Add a state vector into the trajectory
SwimZStateVector	first()	Get the first state vector
double	getBDL(FieldProbe probe)	Get the approximate integral |B x dL|
double[]	getFinalThetaAndPhi()	Get the values of theta and phi from the momentum and the final state vector.
double[]	getFinalThreeMomentum()	Get the final three momentum
GeneratedParticleRecord	getGeneratedParticleRecord()	Obtain a GeneratedParticleRecord for this result
double[]	getInitialThetaAndPhi()	Get the values of theta and phi from the momentum and the initial state vector.
double[]	getInitialThreeMomentum()	Get the initial three momentum
double	getMomentum()	Get the magnitude of the three momentum, which is constant.
double	getPathLength()	Get the approximate path length in cm
int	getQ()	Get the integer charge.
double[]	getThetaAndPhi(SwimZStateVector sv)	Get the values of theta and phi from the momentum and a state vector.
double[]	getThreeMomentum(SwimZStateVector sv)	Get the momentum three-vector for a given statevector, which should be on this result's trajectory.
void	getThreeMomentum(SwimZStateVector sv, double[] p3)	Get the momentum three-vector for a given statevector, which should be on this result's trajectory.
List<SwimZStateVector>	getTrajectory()	Get the trajectory of state vectors
double	getZf()	Get the final z value
double	getZo()	Get the starting z value
SwimZStateVector	last()	Get the final state vector
double	sectorGetBDL(int sector, FieldProbe probe)	Get the approximate integral |B x dL|
double	sectorGetBDLXZPlane(int sector, FieldProbe probe)	Get the approximate integral |B x dL| in the middle plane
int	size()	Get the number of state vectors in the trajectory
SwimTrajectory	toSwimTrajectory()	Create a SwimTrajectory for this result object

Methods inherited from class java.lang.Object

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

Constructor Details

SwimZResult

public SwimZResult(int Q,
 double p,
 double zo,
 double zf,
 int capacity)

Constructor Create a SwimZResult with the trajectory initialized but empty.

Parameters:

Q - the integer charge (-1 for electron)

p - the momentum in Gev/c

zo - the initial z value in cm;

zf - the final z value in cm;

capacity - the initial capacity of the trajectory

Method Details

getMomentum

public double getMomentum()

Get the magnitude of the three momentum, which is constant.

Returns:

the magnitude of the three momentum in GeV/c

getThreeMomentum

public double[] getThreeMomentum(SwimZStateVector sv)

Get the momentum three-vector for a given statevector, which should be on this result's trajectory.

Parameters:

sv - the given state vector

Returns:

the three momentum in x, y, z order in GeV/c

getPathLength

public double getPathLength()

Get the approximate path length in cm

Returns:

the approximate path length in cm

getBDL

public double getBDL(FieldProbe probe)

Get the approximate integral |B x dL|

Parameters:

probe - the probe use to compute this result trajectory

Returns:

the approximate integral |B x dL| in kG*cm

sectorGetBDL

public double sectorGetBDL(int sector,
 FieldProbe probe)

Get the approximate integral |B x dL|

Parameters:

sector - sector 1..6

probe - the probe use to compute this result trajectory

Returns:

the approximate integral |B x dL| in kG*cm

sectorGetBDLXZPlane

public double sectorGetBDLXZPlane(int sector,
 FieldProbe probe)

Get the approximate integral |B x dL| in the middle plane

Parameters:

sector - sector 1..6

probe - the probe use to compute this result trajectory

Returns:

the approximate integral |B x dL| in kG*cm

getThreeMomentum

public void getThreeMomentum(SwimZStateVector sv,
 double[] p3)

Get the momentum three-vector for a given statevector, which should be on this result's trajectory.

Parameters:

sv - the given state vector

getInitialThreeMomentum

public double[] getInitialThreeMomentum()

Get the initial three momentum

Returns:

the initial three momentum

getFinalThreeMomentum

public double[] getFinalThreeMomentum()

Get the final three momentum

Returns:

the final three momentum

getQ

public int getQ()

Get the integer charge. This is not an element of the state vector but is stored here for convenience.

Returns:

the integer charge (e.g., -1 for electron)

getZo

public double getZo()

Get the starting z value

Returns:

the starting z value

getZf

public double getZf()

Get the final z value

Returns:

the final z value

add

protected void add(SwimZStateVector vector)

Add a state vector into the trajectory

Parameters:

vector - the vector to add

getTrajectory

public List<SwimZStateVector> getTrajectory()

Get the trajectory of state vectors

Returns:

the trajectory

first

public SwimZStateVector first()

Get the first state vector

Returns:

the first state vector

size

public int size()

Get the number of state vectors in the trajectory

Returns:

the number of state vectors in the trajectory

last

public SwimZStateVector last()

Get the final state vector

Returns:

the final state vector

getThetaAndPhi

public double[] getThetaAndPhi(SwimZStateVector sv)

Get the values of theta and phi from the momentum and a state vector.

Parameters:

sv - the statevector, presumably on this trajectory

Returns:

theta and phi in an array, in that order, in degrees.

getFinalThetaAndPhi

public double[] getFinalThetaAndPhi()

Get the values of theta and phi from the momentum and the final state vector.

Returns:

theta and phi in an array, in that order, in degrees.

getInitialThetaAndPhi

public double[] getInitialThetaAndPhi()

Get the values of theta and phi from the momentum and the initial state vector.

Returns:

theta and phi in an array, in that order, in degrees.

getGeneratedParticleRecord

public GeneratedParticleRecord getGeneratedParticleRecord()

Obtain a GeneratedParticleRecord for this result

Returns:

a GeneratedParticleRecord for this result

toSwimTrajectory

public SwimTrajectory toSwimTrajectory()

Create a SwimTrajectory for this result object

Returns:

a SwimTrajectory corresponding to this result.