All-Optical Cascaded Laser Wakefield Accelerator Using Ionization-Induced Injection

J. S. Liu, C. Q. Xia, W. T. Wang, H. Y. Lu, Ch. Wang, A. H. Deng, W. T. Li, H. Zhang, X. Y. Liang, Y. X. Leng, X. M. Lu, C. Wang, J. Z. Wang, K. Nakajima, R. X. Li, and Z. Z. Xu
Phys. Rev. Lett. 107, 035001 – Published 11 July 2011

Abstract

We report on near-GeV electron beam generation from an all-optical cascaded laser wakefield accelerator (LWFA). Electron injection and acceleration are successfully separated and controlled in different LWFA stages by employing two gas cells filled with a He/O2 mixture and pure He gas, respectively. Electrons with a Maxwellian spectrum, generated from the first LWFA assisted by ionization-induced injection, were seeded into the second LWFA with a 3-mm-thick gas cell and accelerated to be a 0.8-GeV quasimonoenergetic electron beam, corresponding to an acceleration gradient of 187GV/m. The demonstrated scheme paves the way towards the multi-GeV laser accelerators.

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  • Received 8 March 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.035001

© 2011 American Physical Society

Authors & Affiliations

J. S. Liu1, C. Q. Xia1, W. T. Wang1, H. Y. Lu1, Ch. Wang1, A. H. Deng1, W. T. Li1, H. Zhang1, X. Y. Liang1, Y. X. Leng1, X. M. Lu1, C. Wang1, J. Z. Wang1, K. Nakajima1,2, R. X. Li1,*, and Z. Z. Xu1,†

  • 1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

  • *ruxinli@mail.shcnc.ac.cn
  • zzxu@mail.shcnc.ac.cn

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Vol. 107, Iss. 3 — 15 July 2011

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