Inward particle transport driven by biased endplate in a cylindrical magnetized plasma

Yue GE; Tianchao XU; Chijie XIAO; Zhibin GUO; Xiaogang WANG; Renchuan HE; Xiaoyi YANG; Zuyu ZHANG; Ruixin YUAN

doi:10.1088/2058-6272/ad1676

Plasma Science and Technology > 2024 > 26(3): 034017. > DOI: 10.1088/2058-6272/ad1676

Yue GE, Tianchao XU, Chijie XIAO, Zhibin GUO, Xiaogang WANG, Renchuan HE, Xiaoyi YANG, Zuyu ZHANG, Ruixin YUAN. Inward particle transport driven by biased endplate in a cylindrical magnetized plasma[J]. Plasma Science and Technology, 2024, 26(3): 034017. DOI: 10.1088/2058-6272/ad1676

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Inward particle transport driven by biased endplate in a cylindrical magnetized plasma

1.
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People’s Republic of China
2.
Department of Physics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China

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Author Bio:
Tianchao XU: xutianchao90@126.com

Chijie XIAO: cjxiao@pku.edu.cn
Corresponding author:
Tianchao XU, xutianchao90@126.com

Chijie XIAO, cjxiao@pku.edu.cn
Received Date: July 05, 2023
Revised Date: December 14, 2023
Accepted Date: December 16, 2023
Available Online: March 17, 2024
Published Date: February 22, 2024

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Abstract

Abstract

The inward particle transport is associated with the formation of peaked density profiles, which contributes to improve the fusion rate and the realization of steady-state discharge. The active control of inward particle transport is considered as one of the most critical issues of magnetic confinement fusion. Recently, it is realized preliminarily by adding a biased endplate in the Peking University Plasma Test (PPT) device. The results reveal that the inward particle flux increases with the bias voltage of the endplate. It is also found that the profile of radial electric field ( ${\mathit{E}}_{r}$ ) shear is flattened by the increased bias voltage. Radial velocity fluctuations affect the inward particle more than density fluctuations, and the frequency of the dominant mode driving inward particle flux increases with the biased voltage applied to the endplate. The experimental results in the PPT device provide a method to actively control the inward particle flux using a biased endplate and enrich the understanding of the relationship between ${\boldsymbol{E}}_r\times{{\boldsymbol{B}}}$ shear and turbulence transport.
- inward particle transport,
- biased endplate,
- turbulent transport.

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References (23)

References

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Inward particle transport driven by biased endplate in a cylindrical magnetized plasma