Optimisation of An HHG-Seeded Harmonic Cascade FEL Design for the NLS Project

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Optimization studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarization, 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 optimize a harmonic cascade FEL operating at 1 keV; topics investigated include ... continued below

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Dunning, David; /Daresbury; Thompson, Neil; /Daresbury; Bartolini, Riccardo; /Oxford U., JAI et al. June 25, 2012.

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Optimization studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarization, 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 optimize a harmonic cascade FEL operating at 1 keV; topics investigated include modulator configuration, seed power level and ef- fects of the HHG seed structure. FEL simulations using realistic electron beam distributions are presented and tolerance to increased emittance has been considered.

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  • Journal Name: Conf.Proc.C100523:TUPE049,2010; Conference: 1st International Particle Accelerator Conference: IPAC'10, 23-28 May 2010, Kyoto, Japan

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  • Report No.: SLAC-PUB-15113
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1044626
  • Archival Resource Key: ark:/67531/metadc829829

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  • June 25, 2012

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  • May 19, 2016, 9:45 a.m.

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  • June 20, 2016, 7:22 p.m.

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Dunning, David; /Daresbury; Thompson, Neil; /Daresbury; Bartolini, Riccardo; /Oxford U., JAI et al. Optimisation of An HHG-Seeded Harmonic Cascade FEL Design for the NLS Project, article, June 25, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc829829/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.