• Open Access

Compact beam transport system for free-electron lasers driven by a laser plasma accelerator

Tao Liu, Tong Zhang, Dong Wang, and Zhirong Huang
Phys. Rev. Accel. Beams 20, 020701 – Published 1 February 2017

Abstract

Utilizing laser-driven plasma accelerators (LPAs) as a high-quality electron beam source is a promising approach to significantly downsize the x-ray free-electron laser (XFEL) facility. A multi-GeV LPA beam can be generated in several-centimeter acceleration distance, with a high peak current and a low transverse emittance, which will considerably benefit a compact FEL design. However, the large initial angular divergence and energy spread make it challenging to transport the beam and realize FEL radiation. In this paper, a novel design of beam transport system is proposed to maintain the superior features of the LPA beam and a transverse gradient undulator (TGU) is also adopted as an effective energy spread compensator to generate high-brilliance FEL radiation. Theoretical analysis and numerical simulations are presented based on a demonstration experiment with an electron energy of 380 MeV and a radiation wavelength of 30 nm.

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  • Received 1 September 2016

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.020701

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

Tao Liu1,2,3, Tong Zhang1, Dong Wang1, and Zhirong Huang3

  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

Article Text

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Issue

Vol. 20, Iss. 2 — February 2017

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