Energy-spread preservation and high efficiency in a plasma-wakefield accelerator

C. A. Lindstrøm; J. M. Garland; S. Schröder; L. Boulton; G. Boyle; J. Chappell; R. D'Arcy; P. Gonzalez; A. Knetsch; V. Libov; G. Loisch; A. Martinez De La Ossa; P. Niknejadi; K. Põder; L. Schaper; B. Schmidt; B. Sheeran; S. Wesch; J. Wood; J. Osterhoff

doi:10.1103/PhysRevLett.126.014801

Energy-spread preservation and high efficiency in a plasma-wakefield accelerator

C. A. Lindstrøm, J. M. Garland, S. Schröder, L. Boulton, G. Boyle, J. Chappell, R. D'Arcy, P. Gonzalez, A. Knetsch, V. Libov, G. Loisch, A. Martinez De La Ossa, P. Niknejadi, K. Põder, L. Schaper, B. Schmidt, B. Sheeran, S. Wesch, J. Wood, J. Osterhoff

Physics

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Abstract

Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising path to realizing compact free-electron lasers and particle colliders. High efficiency and low energy spread can be achieved simultaneously by strong beam loading of plasma wakefields when accelerating bunches with carefully tailored current profiles [M. Tzoufras, Phys. Rev. Lett. 101, 145002 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.145002]. We experimentally demonstrate such optimal beam loading in a nonlinear electron-driven plasma accelerator. Bunches with an initial energy of 1 GeV were accelerated by 45 MeV with an energy-transfer efficiency of (42±4)% at a gradient of 1.3 GV/m while preserving per-mille energy spreads with full charge coupling, demonstrating wakefield flattening at the few-percent level.

Original language	English
Article number	014801
Number of pages	6
Journal	Physical Review Letters
Volume	126
Issue number	1
Early online date	6 Jan 2021
DOIs	https://doi.org/10.1103/PhysRevLett.126.014801
Publication status	Published - 8 Jan 2021

Keywords

plasma wakefields
accelerating gradient
plasma wakefield acceleration

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Lindstrom-etal-PRL-2021-Energy-spread-preservation-and-high-efficiency-in-a -lasma-wakefieldFinal published version, 1.02 MB

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Lindstrøm, C. A., Garland, J. M., Schröder, S., Boulton, L., Boyle, G., Chappell, J., D'Arcy, R., Gonzalez, P., Knetsch, A., Libov, V., Loisch, G., Martinez De La Ossa, A., Niknejadi, P., Põder, K., Schaper, L., Schmidt, B., Sheeran, B., Wesch, S., Wood, J., & Osterhoff, J. (2021). Energy-spread preservation and high efficiency in a plasma-wakefield accelerator. Physical Review Letters, 126(1), [014801]. https://doi.org/10.1103/PhysRevLett.126.014801

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abstract = "Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising path to realizing compact free-electron lasers and particle colliders. High efficiency and low energy spread can be achieved simultaneously by strong beam loading of plasma wakefields when accelerating bunches with carefully tailored current profiles [M. Tzoufras, Phys. Rev. Lett. 101, 145002 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.145002]. We experimentally demonstrate such optimal beam loading in a nonlinear electron-driven plasma accelerator. Bunches with an initial energy of 1 GeV were accelerated by 45 MeV with an energy-transfer efficiency of (42±4)% at a gradient of 1.3 GV/m while preserving per-mille energy spreads with full charge coupling, demonstrating wakefield flattening at the few-percent level.",

keywords = "plasma wakefields, accelerating gradient, plasma wakefield acceleration",

author = "Lindstr{\o}m, {C. A.} and Garland, {J. M.} and S. Schr{\"o}der and L. Boulton and G. Boyle and J. Chappell and R. D'Arcy and P. Gonzalez and A. Knetsch and V. Libov and G. Loisch and {Martinez De La Ossa}, A. and P. Niknejadi and K. P{\~o}der and L. Schaper and B. Schmidt and B. Sheeran and S. Wesch and J. Wood and J. Osterhoff",

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Lindstrøm, CA, Garland, JM, Schröder, S, Boulton, L, Boyle, G, Chappell, J, D'Arcy, R, Gonzalez, P, Knetsch, A, Libov, V, Loisch, G, Martinez De La Ossa, A, Niknejadi, P, Põder, K, Schaper, L, Schmidt, B, Sheeran, B, Wesch, S, Wood, J & Osterhoff, J 2021, 'Energy-spread preservation and high efficiency in a plasma-wakefield accelerator', Physical Review Letters, vol. 126, no. 1, 014801. https://doi.org/10.1103/PhysRevLett.126.014801

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AU - Lindstrøm, C. A.

AU - Garland, J. M.

AU - Schröder, S.

AU - Boulton, L.

AU - Boyle, G.

AU - Chappell, J.

AU - D'Arcy, R.

AU - Gonzalez, P.

AU - Knetsch, A.

AU - Libov, V.

AU - Loisch, G.

AU - Martinez De La Ossa, A.

AU - Niknejadi, P.

AU - Põder, K.

AU - Schaper, L.

AU - Schmidt, B.

AU - Sheeran, B.

AU - Wesch, S.

AU - Wood, J.

AU - Osterhoff, J.

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Energy-spread preservation and high efficiency in a plasma-wakefield accelerator

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