Paper |
Title |
Page |
MOPC034 |
Collective Effects in a Short-Pulse FEL Driver
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145 |
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- P. H. Williams, H. L. Owen
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
- G. Bassi
Cockcroft Institute, Warrington, Cheshire
- S. Thorin
MAX-lab, Lund
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There is much interest in the provision of coherent, tunable VUV and soft X-ray pulses of duration less than 10fs. A 1.3 GHz linac driver concept has been developed, and in this paper we address collective effects in the short electron bunches using start-to-end modelling. In particular, we examine the limitations from coherent radiation and induced microbunching, and their impact on the design of the accelerator system.
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MOPC035 |
PULSE - A High-Repetition-Rate Linac Driver for X-ray FELs
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148 |
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- P. H. Williams, B. L. Militsyn, H. L. Owen, M. W. Poole, N. Thompson
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
- B. W.J. McNeil
USTRAT/SUPA, Glasgow
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We describe a staged concept for a linac-based free-electron laser providing coherent tunable VUV and soft X-ray output with pulse lengths less than 10 fs. Use of recent developments in high brightness injectors and 1.3 GHz cryomodules gives stable, reliable output with very good electron beam quality and flexible pulse pattern. Options for achieving repetition rates up to 1 MHz are examined. We also consider the development and demonstration of novel FEL concepts that access photon pulses in the attosecond regime. The combination of these parameters would open up new areas in femtosecond and attosecond science.
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