Development of a toroidal soft x-ray imaging system and application for investigating three-dimensional plasma on J-TEXT

Chuanxu ZHAO; Jianchao LI; Xiaoqing ZHANG; Nengchao WANG; Yonghua DING; Zhoujun YANG; Zhonghe JIANG; Wei YAN; Yangbo LI; Feiyue MAO; Zhengkang REN; the J-TEXT Team

doi:10.1088/2058-6272/ad1364

Plasma Science and Technology > 2024 > 26(3): 034014. > DOI: 10.1088/2058-6272/ad1364

Chuanxu ZHAO, Jianchao LI, Xiaoqing ZHANG, Nengchao WANG, Yonghua DING, Zhoujun YANG, Zhonghe JIANG, Wei YAN, Yangbo LI, Feiyue MAO, Zhengkang REN, the J-TEXT Team. Development of a toroidal soft x-ray imaging system and application for investigating three-dimensional plasma on J-TEXT[J]. Plasma Science and Technology, 2024, 26(3): 034014. DOI: 10.1088/2058-6272/ad1364

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Development of a toroidal soft x-ray imaging system and application for investigating three-dimensional plasma on J-TEXT

1.
International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
2.
Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430205, People’s Republic of China
3.
International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China

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Author Bio:
Jianchao LI: lijch@wit.edu.cn

Xiaoqing ZHANG: zhangxiaoqing@hust.edu.cn
Corresponding author:
Jianchao LI, lijch@wit.edu.cn

Xiaoqing ZHANG, zhangxiaoqing@hust.edu.cn
Received Date: June 25, 2023
Revised Date: December 04, 2023
Accepted Date: December 06, 2023
Available Online: March 03, 2024
Published Date: March 06, 2024

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Abstract

Abstract

A toroidal soft x-ray imaging (T-SXRI) system has been developed to investigate three-dimensional (3D) plasma physics on J-TEXT. This T-SXRI system consists of three sets of SXR arrays. Two sets are newly developed and located on the vacuum chamber wall at toroidal positions $\phi$ of $126.4$ ° and $272.6$ °, respectively, while one set was established previously at $\phi = 65.5$ °. Each set of SXR arrays consists of three arrays viewing the plasma poloidally, and hence can be used separately to obtain SXR images via the tomographic method. The sawtooth precursor oscillations are measured by T-SXRI, and the corresponding images of perturbative SXR signals are successfully reconstructed at these three toroidal positions, hence providing measurement of the 3D structure of precursor oscillations. The observed 3D structure is consistent with the helical structure of the m/n = 1/1 mode. The experimental observation confirms that the T-SXRI system is able to observe 3D structures in the J-TEXT plasma.
- SXR imaging,
- J-TEXT tokamak,
- three-dimensional measurement,
- MHD

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References (37)

References

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Development of a toroidal soft x-ray imaging system and application for investigating three-dimensional plasma on J-TEXT