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Proceedings Paper

Independent control of laser wakefield-accelerated electron-beam parameters
Author(s): G. Golovin; Shouyuan Chen; Nathan Powers; Cheng Liu; Sudeep Banerjee; Jun Zhang; Ming Zeng; Zheng-Ming Sheng; D. Umstadter
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Paper Abstract

By employing a pair of partially overlapped supersonic gas jets, we separated injection and acceleration stages of laser wakefield acceleration to produce stable, monoenergetic, and tunable electron beams. The first jet (injector) utilized a He/N2 mixture and resulted in electrons injected into the wake via ionization-assisted injection. These electrons were then accelerated in the second jet (accelerator) using pure He. By changing length and plasma density of the accelerator jet, we were able to tune electron energy in the 50 – 300 MeV range with energy spread of 10-30% and 20 pC charge. Simulations show that the injection region is limited within the overlap of the jets.

Paper Details

Date Published: 14 May 2015
PDF: 7 pages
Proc. SPIE 9514, Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III, 951405 (14 May 2015); doi: 10.1117/12.2182707
Show Author Affiliations
G. Golovin, Univ. of Nebraska-Lincoln (United States)
Shouyuan Chen, Univ. of Nebraska-Lincoln (United States)
Nathan Powers, KLA-Tencor Corp. (United States)
Cheng Liu, Univ. of Nebraska-Lincoln (United States)
Sudeep Banerjee, Univ. of Nebraska-Lincoln (United States)
Jun Zhang, Univ. of Nebraska-Lincoln (United States)
Ming Zeng, Shanghai Jiao Tong Univ. (China)
Zheng-Ming Sheng, Shanghai Jiao Tong Univ. (China)
D. Umstadter, Univ. of Nebraska-Lincoln (United States)


Published in SPIE Proceedings Vol. 9514:
Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III
Kenneth W. D. Ledingham; Eric Esarey; Carl B. Schroeder; Klaus Spohr; Paul McKenna; Florian J. Grüner; Paul R. Bolton, Editor(s)

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