Experimental study of core and edge fluctuations by reflectometry on EAST tokamak
文献类型：期刊论文
| 作者 | Zhou, Zhen1,5; Zhang, Tao5 ; Wu, Mingfu4,5; Ye, Kaixuan4,5; Zhong, Fubin4,5; Huang, Jia4,5; Geng, Kangning2,3; Liu, Yukai2,3; Li, Gongshun5; Xiang, Haoming4,5
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| 刊名 | PLASMA SCIENCE & TECHNOLOGY
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| 出版日期 | 2021-07-01 |
| 卷号 | 23 |
| 关键词 | core fluctuation edge fluctuation reflectometry |
| ISSN号 | 1009-0630 |
| DOI | 10.1088/2058-6272/abf4b5 |
| 通讯作者 | Zhang, Tao(zhangt@ipp.ac.cn) |
| 英文摘要 | An eight-channel poloidal correlation reflectometer (PCR) with O-mode polarization has been installed in the EAST tokamak to measure the fluctuations from core to edge. The PCR launches eight different frequency microwaves (20.4, 24.8, 33, 40, 42.4, 48, 52.6, 57.2 GHz) into the plasma from the low field side and two poloidally separated antennae are used to receive the reflected waves. As a result, the diagnostic can measure fluctuations in eight (radial)x two (poloidal) spatial positions. The diagnostic has been applied to study the core and edge pedestal fluctuations during an inter-ELM phase in H-mode plasma. This inter-ELM phase can be divided into two stages. In the first stage, a low frequency (<50 kHz) broadband fluctuation dominates in the pedestal gradient region. In the second stage, this fluctuation is strongly suppressed and quasi-coherent fluctuations (QCFs) appear. The QCF's amplitude increases with the pedestal density gradient, implying density gradient driven instabilities. But the core fluctuations inside the pedestal show no evident changes during the inter-ELM phase. |
| WOS关键词 | MICROWAVE REFLECTOMETRY |
| 资助项目 | National Key R&D Program of China[2017YFE0301205] ; National Natural Science Foundation of China[11875289] ; National Natural Science Foundation of China[11675211] ; National Natural Science Foundation of China[11805136] ; National Natural Science Foundation of China[12075284] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000649637700001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/122194]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Tao |
| 作者单位 | 1.Nanchang Univ, Jiangxi Prov Key Lab Fusion & Informat Control, Inst Fus Energy & Plasma Applicat, Dept Phys, Nanchang 330031, Jiangxi, Peoples R China 2.Shenzhen Univ, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Coll Optoelect Engn, Shenzhen 5180602, Peoples R China 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Zhen,Zhang, Tao,Wu, Mingfu,et al. Experimental study of core and edge fluctuations by reflectometry on EAST tokamak[J]. PLASMA SCIENCE & TECHNOLOGY,2021,23. |
| APA | Zhou, Zhen.,Zhang, Tao.,Wu, Mingfu.,Ye, Kaixuan.,Zhong, Fubin.,...&Liu, Sanqiu.(2021).Experimental study of core and edge fluctuations by reflectometry on EAST tokamak.PLASMA SCIENCE & TECHNOLOGY,23. |
| MLA | Zhou, Zhen,et al."Experimental study of core and edge fluctuations by reflectometry on EAST tokamak".PLASMA SCIENCE & TECHNOLOGY 23(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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