Study of space charge force for a laser-accelerated proton beam

Zhu Jungao; Zhao Yuan; Lai Meifu; Gu Yongli; Xu Shixiang; Zhou Cangtao; Lu Haiyang

doi:10.11884/HPLPB202335.220171

Volume 35 Issue 2

Jan. 2023

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Zhu Jungao, Zhao Yuan, Lai Meifu, et al. Study of space charge force for a laser-accelerated proton beam[J]. High Power Laser and Particle Beams, 2023, 35: 021004. doi: 10.11884/HPLPB202335.220171

Citation:

Zhu Jungao, Zhao Yuan, Lai Meifu, et al. Study of space charge force for a laser-accelerated proton beam[J]. High Power Laser and Particle Beams, 2023, 35: 021004. doi: 10.11884/HPLPB202335.220171

Zhu Jungao, Zhao Yuan, Lai Meifu, et al. Study of space charge force for a laser-accelerated proton beam[J]. High Power Laser and Particle Beams, 2023, 35: 021004. doi: 10.11884/HPLPB202335.220171

Citation:

Zhu Jungao, Zhao Yuan, Lai Meifu, et al. Study of space charge force for a laser-accelerated proton beam[J]. High Power Laser and Particle Beams, 2023, 35: 021004. doi: 10.11884/HPLPB202335.220171

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Study of space charge force for a laser-accelerated proton beam

doi: 10.11884/HPLPB202335.220171

Zhu Jungao^1
,,
Zhao Yuan¹,
Lai Meifu¹,
Gu Yongli¹,
Xu Shixiang^{2
,
,},
Zhou Cangtao^{1
,
,},
Lu Haiyang^{1
,
,}

1.
Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
2.
Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

Funds: Fundamental Research Program of Shenzhen (SZWD2021007, JCYJ20200109105606426), National Natural Science Foundation of China (92050203), Science and Technology on Plasma Physics Laboratory.

More Information

Author Bio:
Zhu Jungao，zhujg@pku.edu.cn
Corresponding author: Xu Shixiang, shxxu@szu.edu.cn; Zhou Cangtao, zcangtao@sztu.edu.cn; Lu Haiyang, luhaiyang@sztu.edu.cn
Received Date: 2022-05-24
Rev Recd Date: 2022-12-03

Available Online: 2022-12-08

Publish Date: 2023-01-14

Abstract

Abstract

Laser accelerators can provide proton beams with unique qualities, such as micron size, picosecond pulse duration and high peak current, and have been demonstrated for various applications and for scientific research purposes. The effect of the space charge force in high peak current beams is strong and raises challenges for application after beam transportation. We performed two-dimensional particle-in-cell simulations and studied the influence of electrons that have velocities close to that of the protons after laser acceleration. We employed ellipsoid models with different charge distributions to estimate the effects of the space charge force. Results demonstrate that space charge will affect beam transmission, and even lead to complete transmission failure if the number of protons per pulse exceeds 10¹⁰. The influence of the space charge force diminishes greatly after 20 ps, which corresponds to approximately 1.2 mm from the target.
- laser acceleration,
- proton beam,
- space charge force,
- high brightness

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References(29)

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