Optimization of the beam quality in ionization injection by a tailoring gas profile

doi:10.1088/1674-1056/ac1b89

中国物理B ›› 2021, Vol. 30 ›› Issue (10): 105201-105201.doi: 10.1088/1674-1056/ac1b89

Optimization of the beam quality in ionization injection by a tailoring gas profile

Ye Cui(崔野)¹, Guo-Bo Zhang(张国博)^1,†, Yan-Yun Ma(马燕云)^2,3,‡, Xiao-Hu Yang(杨晓虎)^1,3, Jia-Yin Mu(牟佳胤)¹, Hai-Bo Yao(姚海波)¹, Ming Zi(资明)¹, Jie Zhou(周洁)⁴, Jing-Qi Yang(杨静琦)⁴, Li-Xiang Hu(胡理想)¹, and Li-Chao Tian(田立朝)¹

1 College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China;
2 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China;
3 Collaborative Innovation Center of IFSA(CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
4 XLAB, The Second Academy of CASIC, Beijing 100854, China

收稿日期:2021-06-03 修回日期:2021-07-27 接受日期:2021-08-07 出版日期:2021-09-17 发布日期:2021-09-17
通讯作者: Guo-Bo Zhang, Yan-Yun Ma E-mail:zgb830@163.com;plasim@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12005297, 11975308, and 11775305), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25050200), the Fund of Science Challenge Project (Grant No. TZ2018001), Natural Science Foundation of Hunan Province, China (Grant No. 2020JJ5651), and the Fund of the State Key Laboratory of Laser Interaction with Matter (Grant No. SKLLIM1908).

Optimization of the beam quality in ionization injection by a tailoring gas profile

1 College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China;
2 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China;
3 Collaborative Innovation Center of IFSA(CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
4 XLAB, The Second Academy of CASIC, Beijing 100854, China

Received:2021-06-03 Revised:2021-07-27 Accepted:2021-08-07 Online:2021-09-17 Published:2021-09-17
Contact: Guo-Bo Zhang, Yan-Yun Ma E-mail:zgb830@163.com;plasim@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12005297, 11975308, and 11775305), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25050200), the Fund of Science Challenge Project (Grant No. TZ2018001), Natural Science Foundation of Hunan Province, China (Grant No. 2020JJ5651), and the Fund of the State Key Laboratory of Laser Interaction with Matter (Grant No. SKLLIM1908).

摘要/Abstract

摘要： A new scheme is proposed to improve the electron beam quality of ionization-induced injection by tailoring gas profile in laser wakefield acceleration. Two-dimensional particle-in-cell simulations show that the ionization-induced injection mainly occurs in high-density stage and automatically truncates in low-density stage due to the decrease of the wakefield potential difference. The beam loading can be compensated by the elongated beam resulting from the density transition stage. The beam quality can be improved by shorter injection distance and beam loading effect. A quasi-monoenergetic electron beam with a central energy of 258 MeV and an energy spread of 5.1% is obtained under certain laser-plasma conditions.

关键词: laser wakefield acceleration, ionization-induced injection, the beam loading effect

Abstract: A new scheme is proposed to improve the electron beam quality of ionization-induced injection by tailoring gas profile in laser wakefield acceleration. Two-dimensional particle-in-cell simulations show that the ionization-induced injection mainly occurs in high-density stage and automatically truncates in low-density stage due to the decrease of the wakefield potential difference. The beam loading can be compensated by the elongated beam resulting from the density transition stage. The beam quality can be improved by shorter injection distance and beam loading effect. A quasi-monoenergetic electron beam with a central energy of 258 MeV and an energy spread of 5.1% is obtained under certain laser-plasma conditions.

Key words: laser wakefield acceleration, ionization-induced injection, the beam loading effect

中图分类号: (Laser-plasma acceleration of electrons and ions)

52.38.Kd

52.65.Rr (Particle-in-cell method) 52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))

Ye Cui(崔野), Guo-Bo Zhang(张国博), Yan-Yun Ma(马燕云), Xiao-Hu Yang(杨晓虎), Jia-Yin Mu(牟佳胤), Hai-Bo Yao(姚海波), Ming Zi(资明), Jie Zhou(周洁), Jing-Qi Yang(杨静琦), Li-Xiang Hu(胡理想), and Li-Chao Tian(田立朝). Optimization of the beam quality in ionization injection by a tailoring gas profile[J]. 中国物理B, 2021, 30(10): 105201-105201.

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Optimization of the beam quality in ionization injection by a tailoring gas profile

Optimization of the beam quality in ionization injection by a tailoring gas profile

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