New injection and acceleration scheme of positrons in the laser-plasma bubble regime

Open Access

New injection and acceleration scheme of positrons in the laser-plasma bubble regime

Z. Y. Xu, C. F. Xiao, H. Y. Lu, R. H. Hu, J. Q. Yu, Z. Gong, Y. R. Shou, J. X. Liu, C. Z. Xie, S. Y. Chen, H. G. Lu, T. Q. Xu, R. X. Li, N. Hafz, S. Li, Z. Najmudin, P. P. Rajeev, D. Neely, and X. Q. Yan

Phys. Rev. Accel. Beams 23, 091301 – Published 1 September 2020

Abstract

A novel approach for positron injection and acceleration in the laser driven plasma wakefield is proposed. One ring-shaped beam and one coaxially propagating Gaussian beam drive wakefields in a preformed plasma volume filled with both electrons and positrons. The laser’s ponderomotive force as well as the charge separation force in the front bucket of the first bubble are utilized to provide the transverse momenta of injected positrons and those positrons can be trapped by the focusing field and then accelerated by the wakefield. Theoretical analysis of the process is presented and verified by particle-in-cell simulations. The simulations show that relatively high-charge, quasimonoenergetic positron beams can be obtained.

Received 8 December 2019
Revised 10 May 2020
Accepted 12 August 2020

DOI:https://doi.org/10.1103/PhysRevAccelBeams.23.091301

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International 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)

Laser driven electron acceleration Laser wakefield acceleration Particle acceleration in plasmas

Accelerators & Beams

Authors & Affiliations

Z. Y. Xu¹, C. F. Xiao¹, H. Y. Lu ^1,2,3,*, R. H. Hu^1,†, J. Q. Yu^1,‡, Z. Gong ¹, Y. R. Shou¹, J. X. Liu¹, C. Z. Xie ¹, S. Y. Chen¹, H. G. Lu¹, T. Q. Xu¹, R. X. Li⁴, N. Hafz ⁵, S. Li⁵, Z. Najmudin⁶, P. P. Rajeev⁷, D. Neely⁷, and X. Q. Yan^1,3

¹Key Laboratory of HEDP of the Ministry of Education, CAPT, and State Key Laboratory of Nuclear Physics and Technology, CAPT, Peking University, Beijing 100871, China
²Center for Advanced Material Diagnostic Technology, College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
³Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
⁴State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
⁵ELI-HU Non-Profit Ltd., Dugonics tr 13, Szeged 6720, Hungary
⁶Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom
⁷Central Laser Facility, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom

^*Corresponding author. luhaiyang@sztu.edu.cn
^†Present address: School of Physics and Technology, Sichuan University. ronghaohu@scu.edu.cn.
^‡Present address: School of physics and Electronics, Hunan University. jinqing.yu@hnu.edu.cn

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Issue

Vol. 23, Iss. 9 — September 2020

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