| Paper | Title | Page |
|---|---|---|
| MOPB30 | An Unaveraged Computational Model of a Variably Polarised Undulator FEL | 95 |
|
||
|
An unaveraged 3D model of the FEL has been developed which can model variably polarised undulators. The radiation field polarisation is self-consistently driven by the electron dynamics and is completely variable. This paper describes both physical model and computational code. |
||
| THPB15 | Generation of Variable Polarisation in a Short Wavelength FEL Amplifier | 622 |
|
||
|
So far, short wavelength Free Electron Laser amplifiers have produced linearly polarised radiation. For several important classes of experiment, variable polarisation is required. For example, in the wavelength range from 1.5 to 2.5 nm, light polarisation is important in characterising magnetic materials where measurements depend critically upon the handedness of the polarisation. It is therefore important that the polarisation does not fluctuate between measurements. In this paper, we study possible methods to generate variably polarised light and consider its shot-to-shot stability. |