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Gas-dynamic density downramp injection in a beam-driven plasma wakefield accelerator

Abstract : We present the experimental demonstration of density downramp injection at a gas-dynamic shock in a beam-driven plasma accelerator. The ultrashort driver electron beam with a peak-current exceeding 10 kA allows operation in the blowout regime and enables injection of electron witness bunches at gentle density ramps, i.e., longer than the plasma wavelength, which nurtures prospects for ultralow bunch emittance. By precision control over the position of injection we show that these bunches can be energy-tuned in acceleration gradients of near 120 GV m−1 .
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https://hal-polytechnique.archives-ouvertes.fr/hal-03466519
Contributor : Sébastien Corde Connect in order to contact the contributor
Submitted on : Sunday, December 5, 2021 - 10:20:50 PM
Last modification on : Tuesday, January 4, 2022 - 6:19:39 AM

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J Couperus Cabadağ, R Pausch, S Schöbel, M Bussmann, Y-Y Chang, et al.. Gas-dynamic density downramp injection in a beam-driven plasma wakefield accelerator. Physical Review Research, American Physical Society, 2021, 3, pp.L042005. ⟨10.1103/physrevresearch.3.l042005⟩. ⟨hal-03466519⟩

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