| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Beam Line Design of Compact Laser Plasma Accelerator |
| Jun-Gao Zhu1, Kun Zhu1**, Li Tao1, Yi-Xing Geng1, Chen Lin1, Wen-Jun Ma1, Hai-Yang Lu1**, Yan-Ying Zhao1, Yuan-Rong Lu1, Jia-Er Chen1, Xue-Qing Yan1,2** |
1State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871
2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006
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| Cite this article: |
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Jun-Gao Zhu, Kun Zhu, Li Tao et al 2017 Chin. Phys. Lett. 34 054101 |
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Abstract A compact laser plasma accelerator that is a novel accelerator based on the interaction of ultra-intense laser and plasmas is being built now at Peking University. According to the results of experiments and numerical simulations, a beam line combining the advantages of quadrupole and analyzing magnets is designed to deliver proton beams with energy ranging from 1 to 44 MeV, energy spread within $\pm$5% and $10^{6-8}$ protons per pulse. It turns out that the existence of space charge force of protons can be ignored for the increase of transverse and longitudinal envelopes even in the case of 10$^{9}$ protons in one pulse. To cope with the challenge to obtain a uniform distribution of protons at the final experiment target in laser acceleration, we manipulate the envelope beam waist in the $Y$ direction to a proper position and obtain a relatively good distribution uniformity of protons with an energy spread of 0–$\pm$5%.
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Received: 09 February 2017
Published: 29 April 2017
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| PACS: |
41.75.Jv
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(Laser-driven acceleration?)
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41.85.Lc
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(Particle beam focusing and bending magnets, wiggler magnets, and quadrupoles)
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87.56.bd
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(Accelerators)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 11575011, and the National Grand Instrument Project under Grant No 2012YQ030142. |
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