xal.tools.beam

Class EnergyFinder

java.lang.Object

xal.tools.beam.EnergyFinder

public class EnergyFinder
extends java.lang.Object

A class to find the energy of the beam, given information about measured phase differences between BPMs We assume the BPMs report phase differences from -180 to 180

Constructor Summary

Constructors

Constructor and Description
EnergyFinder(IProbe probe, double freq) constructor

Method Summary

Modifier and Type	Method and Description
double	findEnergy(double targetPhase) solve the problem, using a simple linear step scheme
double	findEnergy(double targetPhase, double E) solve the problem, using a simple linear step scheme
void	initCalc(double l, double E) initialize problem specific information

Methods inherited from class java.lang.Object

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

Constructor Detail

EnergyFinder

public EnergyFinder(IProbe probe,
                    double freq)

constructor

Parameters:

probe - for the beam

the - BPM frequency (MHz)

Method Detail

initCalc

public void initCalc(double l,
                     double E)

initialize problem specific information

findEnergy

public double findEnergy(double targetPhase,
                         double E)

solve the problem, using a simple linear step scheme

Parameters:

the - phase difference between BPMs in deg

the - starting guess for energy (MeV)

findEnergy

public double findEnergy(double targetPhase)

solve the problem, using a simple linear step scheme

Parameters:

the - phase difference between BPMs in deg