Electron Rephasing in a Laser-Wakefield Accelerator

E. Guillaume, A. Döpp, C. Thaury, K. Ta Phuoc, A. Lifschitz, G. Grittani, J. P. Goddet, A. Tafzi, S. W. Chou, L. Veisz, V. Malka

研究成果: 雜誌貢獻期刊論文同行評審

47 引文 斯高帕斯(Scopus)

摘要

An important limit for energy gain in laser-plasma wakefield accelerators is the dephasing length, after which the electron beam reaches the decelerating region of the wakefield and starts to decelerate. Here, we propose to manipulate the phase of the electron beam in the wakefield, in order to bring the beam back into the accelerating region, hence increasing the final beam energy. This rephasing is operated by placing an upward density step in the beam path. In a first experiment, we demonstrate the principle of this technique using a large energy spread electron beam. Then, we show that it can be used to increase the energy of monoenergetic electron beams by more than 50%.

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文章編號155002
期刊Physical Review Letters
115
發行號15
DOIs
出版狀態已出版 - 7 10月 2015

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