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WG225 |
Undulator Issues for ERLs
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- J. A. Clarke
CCLRC/DL/ASTeC, Daresbury, Warrington, Cheshire
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There are several issues that surround the use of undulators in ERLs that must be considered. In this talk I will discuss the impact of the undulators on the ERL beam and the impact of the ERL beam on the undulators. I will particularly highlight areas that are of low importance on present day storage ring light sources but that become important with the use of ERLs.
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Slides
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WG333 |
High Harmonic Seeding and the 4GLS XUV-FEL
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36 |
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- B. Sheehy
Sheehy Scientific Consulting, Wading River, New York
- J. A. Clarke, D. J. Dunning, N. Thompson
CCLRC/DL/ASTeC, Daresbury, Warrington, Cheshire
- B. W.J. McNeil
USTRAT/SUPA, Glasgow
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The Fourth Generation Light Source (4GLS) project, proposed by the CCLRC in the U. K., will include free electron lasers in the XUV, VUV, and IR. It is proposed that the XUV-FEL, operating between 8100 eV, be seeded by a high harmonic (HH) source, driven by an ultrafast laser system. This offers advantages in longitudinal coherence, synchronization, and the potential for chirped pulse amplification and pulse shaping. In this talk we discuss the issues of HH generation relevant to its use as a seed (energy, spectrum, tunability, synchronization and time structure) and the current planned implementation in the 4GLS XUV-FEL.
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Slides
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