Application of a newly developed radial directional electron probe to the edge unidirectional electron current measurement in EAST
文献类型：期刊论文
| 作者 | Liu, S. C.4; Liang, Y.2,4; Yan, N.4 ; Liao, L.3,4; Wei, W. Y.3,4; Meng, L. Y.3,4; Chen, L.4; Xu, S.2; Zhao, N.1; Chen, R.4
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| 刊名 | NUCLEAR MATERIALS AND ENERGY
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| 出版日期 | 2021-12-01 |
| 卷号 | 29 |
| 关键词 | Unidirectional electron SOL current Directional electron probe Lower hybrid wave Tokamak Plasma |
| DOI | 10.1016/j.nme.2021.101080 |
| 通讯作者 | Liu, S. C.(shaocheng.liu@ipp.ac.cn) ; Yan, N.(yanning@ipp.ac.cn) |
| 英文摘要 | A newly developed radial directional electron probe (DEP) has been applied to the unidirectional electron current measurement on EAST tokamak. The DEP consists of two radial arrays of channels which have opposite directions and align along the local magnetic field line. Each radial array has 6 holes with a radial interval of 5 mm. Every channel has a hole with 0.5 mm radial width, 3 mm depth and 15 degrees poloidal opening angle. The graphite collector embedded inside the hole is biased to positive potential to repel low energy ions, and high energy ions are blocked by the hole surface because their Larmor radii are larger than the radial width of hole. In consequence, the ion current collected by the DEP collector can be ignored in contrast with the electron current, as demonstrated by the I -V characteristics in a DEP commissioning experiment. The difference of collected current between two opposite channels signifies the unidirectional electron current in the flux tube. In a lower hybrid wave (LHW) modulation experiment, the amplitude and radial structure of unidirectional electron current induced by LHW is measured directly by this radial DEP array, and the LHW filament current covers over 20 mm radial region with a maximum of 20 A/cm(2). |
| WOS关键词 | PFIRSCH-SCHLUTER ; MACH PROBE ; PLASMA ; FIELD ; FLOW ; TEMPERATURE ; TOKAMAK |
| 资助项目 | National Natural Science Foundation of China[11875294] ; National Natural Science Foundation of China[11875292] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[119 75271] ; National MCF Energy RD Program[2017YFE0301100] ; National MCF Energy RD Program[2019YFE03040000] ; National MCF Energy RD Program[2019YFE03030000] ; National MCF Energy RD Program[2017YFE0301300] ; Users with Excellence Program of Hefei Science Center, CAS[2021HSC-UE014] |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000711373000001 |
| 资助机构 | National Natural Science Foundation of China ; National MCF Energy RD Program ; Users with Excellence Program of Hefei Science Center, CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/125816]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, S. C.; Yan, N. |
| 作者单位 | 1.Southwest Univ Sci & Technol, Sch Sci, Mianyang 621010, Sichuan, Peoples R China 2.Forschungszentrum Julich, Trilateral Euregio Cluster TEC, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, S. C.,Liang, Y.,Yan, N.,et al. Application of a newly developed radial directional electron probe to the edge unidirectional electron current measurement in EAST[J]. NUCLEAR MATERIALS AND ENERGY,2021,29. |
| APA | Liu, S. C..,Liang, Y..,Yan, N..,Liao, L..,Wei, W. Y..,...&Gao, X..(2021).Application of a newly developed radial directional electron probe to the edge unidirectional electron current measurement in EAST.NUCLEAR MATERIALS AND ENERGY,29. |
| MLA | Liu, S. C.,et al."Application of a newly developed radial directional electron probe to the edge unidirectional electron current measurement in EAST".NUCLEAR MATERIALS AND ENERGY 29(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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