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Xiao G, Yin J, Chen C, Feng B, Zhong W, Zhang Y, Li B, Wang T, Xiao W, Xu M, Duan X. Flow visualization and density measurement of the supersonic molecular beam for fusion plasma fueling. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:043539. [PMID: 34243464 DOI: 10.1063/5.0039181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/31/2021] [Indexed: 06/13/2023]
Abstract
The supersonic molecular beam injection (SMBI) technique is widely used in magnetic fusion devices for plasma fueling and active control of particles. The beam flow formed by the SMBI system is directly visualized by a newly established schlieren diagnostic system on the SMBI testing platform. This schlieren system could provide a 2D density distribution of the beam with the sub-mm spatial resolution by detecting the change in the refractive index of the medium caused by the SMBI in the low-pressure vacuum chamber. The structure and the divergence angle of the supersonic molecular beam for fusion plasma fueling are first measured. Additionally, the density profile of the supersonic molecular beam is reconstructed from the measured light intensity by the schlieren system. The experimental comparison between the standard nozzle and the optimized nozzle of the SMBI system shows the great potential of the diagnostic system in optimizing the beam characteristics.
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Affiliation(s)
- Guoliang Xiao
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Jiao Yin
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Chengyuan Chen
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Beibin Feng
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Wulyu Zhong
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Yipo Zhang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Bingli Li
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Tianbo Wang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Weiwen Xiao
- Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Min Xu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Xuru Duan
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
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Yuan X, Li J, Wu J, Li J, Chen Y, Zhuang H, Zhou Y, Zheng XW, Hu J. Development and implementation of Supersonic Molecular Beam Injection for EAST tokamak. FUSION ENGINEERING AND DESIGN 2018. [DOI: 10.1016/j.fusengdes.2018.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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