Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project

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Persistent URL	http://purl.org/net/epubs/work/53297
Record Status	Checked
Record Id	53297
Title	Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
Contributors	DJ Dunning (STFC Daresbury Lab. and Cockcroft Inst.) (Pr.Au.), NR Thompson (STFC Daresbury Lab. and Cockcroft Inst.), BWJ McNeil (Strathclyde U.), R Bartolini (Diamond Light Source and John Adams Institute), Z Huang (SLAC), H Geng (SLAC)
Abstract	Optimisation studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility [1] are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarisation, 20 fs pulse widths and good temporal coherence. The design uses an HHG seed source tuneable from 50-100 eV to provide direct FEL seeding in this range, and one or two stage harmonic cascades to reach the higher photon energies. Studies have been carried out to optimise a harmonic cascade FEL operating at 1 keV; topics investigated include modulator configuration, seed power level and effects of the HHG seed structure. FEL simulations using realistic electron beam distributions are presented and tolerance to increased emittance has been considered.
Organisation	ASTeC , ASTeC-MaRS , CI , STFC
Keywords	ASTeC 2010-2011 , Physics , FEL , Diamond Light Source , NLS
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Paper In Conference Proceedings	In 1st International Particle Accelerator Conference (IPAC 10), Kyoto, Japan, 24-28 May 2010, (2010).	http://accelconf.…0/papers/tupe049.pdf	tupe049.pdf	2010