Transportation and Manipulation of a Laser Plasma Acceleration Beam

Abstract : The ERC Advanced Grant COXINEL aims at demonstrating free electron laser amplification, at a resonant wavelength of 200 nm, based on a laser plasma acceleration source. To achieve the amplification, a 10 m long dedicated transport line was designed to manipulate the beam qualities. It starts with a triplet of permanent magnet with tunable gradient quadrupoles (QUAPEVA) that handles the highly divergent electron beam, a demixing chicane with a slit to reduce the energy spread per slice, and a set of electromagnetic quadrupoles to provide a chromatic focusing in a 2 m long cryogenic undulator. Electrons of energy 176 MeV were successfully transported throughout the line, where the beam positioning and dispersion were controlled efficiently thanks to a specific beam based alignment method, as well as the energy range by varying the slit width. Observations of undulator radiation for different undulator gaps are reported.
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https://hal.archives-ouvertes.fr/hal-01871651
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Submitted on : Tuesday, September 11, 2018 - 10:28:40 AM
Last modification on : Wednesday, October 30, 2019 - 6:43:45 AM

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Amin Ghaith, Thomas André, Igor Andriyash, Serge Bielawski, Frederic Blache, et al.. Transportation and Manipulation of a Laser Plasma Acceleration Beam. 60th ICFA Advanced Beam Dynamics Workshop on Future Light Sources, Mar 2018, Shanghai, China. pp.TUA2WC01, ⟨10.18429/JACoW-FLS2018-TUA2WC01⟩. ⟨hal-01871651⟩

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