| Paper |
Title |
Page |
| MOPPH025 |
Unaveraged Three-Dimesional Modelling of the FEL
|
47 |
| |
- C. K.W. Nam, P. Aitken, B. W.J. McNeil
USTRAT/SUPA, Glasgow
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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.
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| MOCAU04 |
Retention of Attosecond Pulse Structure in an HHG Seeded FEL Amplifier
|
177 |
| |
- B. W.J. McNeil
USTRAT/SUPA, Glasgow
- D. J. Dunning, N. Thompson
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
- B. Sheehy
Sheehy Scientific Consulting, Wading River, New York
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| |
A model is presented which demonstrates that the attosecond pulse structure of an HHG seed may be retained through to saturation in an FEL amplifier. At wavelengths of ~12nm, a train of attosecond pulses of widths ~300 attoseconds with peak powers in excess of 1GW are predicted from full 3D simulation. Methods for improving these results are discussed.
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