Class SectorSwimZDerivative

java.lang.Object

cnuphys.swimZ.SwimZDerivative

cnuphys.swimZ.SectorSwimZDerivative

All Implemented Interfaces:

IDerivative

public class SectorSwimZDerivative
extends SwimZDerivative

Field Summary

Fields inherited from class SwimZDerivative

_probe, _q, _qv, B

Constructor Summary

Constructors

Constructor	Description
SectorSwimZDerivative()

Method Summary

Modifier and Type	Method	Description
void	derivative(double z, double[] x, double[] dxdz)	Compute the derivatives given the value of the independent variable and the values of the function.
void	set(int sector, int Q, double p, FieldProbe probe)	Set the parameters
void	setSector(int sector)	Set the sector [1..6]

Methods inherited from class SwimZDerivative

set

Methods inherited from class Object

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

Constructor Details

SectorSwimZDerivative

public SectorSwimZDerivative()

Method Details

setSector

public void setSector(int sector)

Set the sector [1..6]

Parameters:

sector - the sector [1..6]

set

public void set(int sector,
 int Q,
 double p,
 FieldProbe probe)

Set the parameters

Parameters:

Q - -1 for electron, +1 for proton, etc.

p - the magnitude of the momentum in GeV/c.

probe - the magnetic field getter

sect - the sector [1..6]

derivative

public void derivative(double z,
 double[] x,
 double[] dxdz)

Compute the derivatives given the value of the independent variable and the values of the function. Think of the Differential Equation as being dydt = f[y,t].

Specified by:

derivative in interface IDerivative

Overrides:

derivative in class SwimZDerivative

Parameters:

z - the value of the independent variable (the z coordinate) (input).

x - the values of the state vector (x, y, tx, ty, q) at z (input).

dxdz - will be filled with the values of the derivatives at z (output).