An ultrashort pulse ultra-violet radiation undulator source driven by a laser plasma wakefield accelerator

M. P. Anania, E. Brunetti, S. M. Wiggins, D. W. Grant, G. H. Welsh, R. C. Issac, S. Cipiccia, R. P. Shanks, G. G. Manahan, C. Aniculaesei, S. B. van der Geer, M. J. de Loos, M. W. Poole, B. J. A. Shepherd, J. A. Clarke, W. A. Gillespie, A. M. MacLeod, D. A. Jaroszynski

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    Abstract

    Narrow band undulator radiation tuneable over the wavelength range of 150–260 nm has been produced by short electron bunches from a 2 mm long laser plasma wakefield accelerator based on a 20 TW femtosecond laser system. The number of photons measured is up to 9 × 106 per shot for a 100 period undulator, with a mean peak brilliance of 1 × 1018 photons/s/mrad2/mm2/0.1% bandwidth. Simulations estimate that the driving electron bunch r.m.s. duration is as short as 3 fs when the electron beam has energy of 120–130 MeV with the radiation pulse duration in the range of 50–100 fs.
    Original languageEnglish
    Article number264102
    Number of pages5
    JournalApplied Physics Letters
    Volume104
    Issue number26
    DOIs
    Publication statusPublished - 30 Jun 2014

    Keywords

    • Undulator radiation
    • Photons
    • Laser plasma acceleration
    • Electron beams
    • Free electron lasers

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