Predicting relative energy spread in two-bunch plasma wakefield acceleration

Wang Xiaoning; Gao Jie; An Weiming; Wang Jia; Li Dazhang; Zeng Ming; Lu Wei

doi:10.11884/HPLPB202234.210425

Volume 34 Issue 4

Mar. 2022

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Article Navigation > High Power Laser and Particle Beams > 2022 > 34(4): 049002

Wang Xiaoning, Gao Jie, An Weiming, et al. Predicting relative energy spread in two-bunch plasma wakefield acceleration[J]. High Power Laser and Particle Beams, 2022, 34: 049002. doi: 10.11884/HPLPB202234.210425

Citation:

Wang Xiaoning, Gao Jie, An Weiming, et al. Predicting relative energy spread in two-bunch plasma wakefield acceleration[J]. High Power Laser and Particle Beams, 2022, 34: 049002. doi: 10.11884/HPLPB202234.210425

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Predicting relative energy spread in two-bunch plasma wakefield acceleration

doi: 10.11884/HPLPB202234.210425

Wang Xiaoning^{1, 2
,},
Gao Jie^{1, 2},
An Weiming^{3
,
,},
Wang Jia^{1, 2},
Li Dazhang^{1, 2
,
,},
Zeng Ming^{1, 2},
Lu Wei⁴

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Department of Astronomy, Beijing Normal University, Beijing 100875, China
4.
Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Received Date: 2021-10-10
Accepted Date: 2022-01-06
Rev Recd Date: 2021-12-23

Available Online: 2022-01-27

Publish Date: 2022-03-19

Abstract

Abstract

We present a formula to directly obtain the final relative energy spread of a trailing beam at the maximal acceleration distance. The formula works for electron beams in a two-bunch plasma wakefield acceleration stage in the so-called nonlinear bubble regime. It only requires the longitudinal profile of the trailing beam and the longitudinal wakefield within the trailing beam at the beginning of an acceleration. This formula not only works well for drive beams and trailing beams with the same initial energies, but is also available for those beams with different initial energies. We find that the relative energy spread of the trailing beam obtained from the formula is determined by the ratio of the trailing beam’s initial energy to the drive beam’s initial energy rather than the specific value of their initial energies. We perform several computational simulations using the quasi-static particle-in-cell code QuickPIC, and the results agree well with that calculated from the formula.
- plasma wakefield acceleration,
- electron acceleration,
- two-bunch,
- relative energy spread,
- particle-in-cell simulation

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References(20)

References

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