McNeil, B. W.J.

Paper	Title	Page
MOPPH008	Unaveraged Three-Dimensional Modelling of the FEL
	P. Aitken, B. W.J. McNeil, C. K.W. Nam USTRAT/SUPA, Glasgow
	A new three-dimensional model of the FEL is presented. A system of scaled, coupled Lorentz-Maxwell equations are derived in the paraxial limit. A minimal number of limiting assumptions are made and the equations are not averaged in the longitudinal direction of common radiation/electron beam propagation, allowing the effects of coherent spontaneous emission and non-localised electron propagation to be modelled. The equations are solved numerically using a parallel Fourier split-step method.
MOPPH069	3D Modelling of the ERLP IR-FEL	167
	J. A. Clarke, N. Thompson, D. J. Dunning STFC/DL/ASTeC, Daresbury, Warrington, Cheshire B. W.J. McNeil USTRAT/SUPA, Glasgow
	An Energy Recovery Linac Prototype (ERLP) facility is currently being commissioned at Daresbury Laboratory; it serves as a testbed for technologies to be used in the proposed 4th Generation Light Source (4GLS) facility. As part of the ERLP facility, an infra-red oscillator FEL is due to be commissioned early in 2008. In this paper we present full three dimensional, time-dependent modelling of the ERLP IR-FEL using Genesis 1.3 in combination with a paraxial optical propagation code (OPC). We also discuss how this work will be used to inform commissioning of the FEL.
MOCAU01	Short Wavelength Regenerative Amplifier FELs	182
	D. J. Dunning, N. Thompson STFC/DL/ASTeC, Daresbury, Warrington, Cheshire B. W.J. McNeil USTRAT/SUPA, Glasgow
	In this paper we discuss the possibility of extending the operating wavelength range of tunable Regenerative Amplifier FELs to shorter wavelengths than current design proposals, notably into the XUV regions of the spectrum and beyond where the reflectivity of broadband optics is very low. Simulation studies are presented which demonstrate the development of good temporal coherence in generic systems with a broadband radiation feedback of less than one part in ten thousand.
	Slides
FRAAU05	4GLS: a Facility for the Generation of High Brightness, Variably Synchronised Sources from THz into the XUV
	J. A. Clarke, D. J. Dunning, N. Thompson STFC/DL/ASTeC, Daresbury, Warrington, Cheshire B. Sheehy Sheehy Scientific Consulting, Wading River, New York B. W.J. McNeil USTRAT/SUPA, Glasgow
	The proposed 4th Generation Light Source (4GLS) at the UK’s Daresbury Laboratory is now in its Technical Design phase. The facility will employ three FELs along with conventional lasers and spontaneous synchrotron radiation sources to provide users with a uniquely flexible range of pump-probe options from THz into the XUV regions of the spectrum. A summary of the current design and operating parameters with particular emphasis on the FEL systems are presented.
	Slides