Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST
文献类型：期刊论文
| 作者 | Wu, Donggui3,4; Hu, Guanghai4 ; Zoletnik, S.2; Xu, Guosheng4; Ding, Siye4; Liu, Jianbin4; Shao, Linming4; Wang, Yifeng4; Chen, Ran4; Yan, Ning4
|
| 刊名 | PLASMA SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 24 |
| 关键词 | Li-BES new filter density fluctuation 2D turbulence |
| ISSN号 | 1009-0630 |
| DOI | 10.1088/2058-6272/ac4d1e |
| 通讯作者 | Hu, Guanghai(ghhu@ipp.ac.cn) ; Wang, Liang(lwang@ipp.ac.cn) |
| 英文摘要 | Accurate and stable measurements of edge density fluctuation with high spatio-temporal resolution have been achieved by the lithium beam emission spectroscopy (Li-BES) diagnostic on experimental and advanced superconducting tokamak (EAST). The new narrower band interference filter exhibits good ability to suppress background emission signal even under strong lithium coating of the tokamak. The raw data measured by channels at different spatial locations in avalanche photo diode camera with high chopping frequency show good consistency. Based on the detected experimental data, detailed information of density profile and fluctuation structures is obtained. A clear edge coherent mode in the auto-power spectrum is observed in pedestal region, which is regarded as the dominant factor for the strong pedestal density fluctuation amplitude. The cross-power spectrum analysis further excludes the additional effects of common-mode noises and non-local perturbation, demonstrating that the detected fluctuation is only caused by local density fluctuation. The normalized radial and poloidal wave-number spectra can specify the quantitative changes of radial wavenumber (k (r)) and poloidal wavenumber (k (theta)) during the pedestal density fluctuation phase. This new Li-BES system, which can provide more accurate experimental data, allows further studies of edge density fluctuation and complex transport process on EAST. |
| WOS关键词 | TURBULENCE ; TRANSPORT ; PROFILE |
| 资助项目 | National Key R&D Program of China[2017YFA0301300] ; National Key R&D Program of China[2019YFE03030000] ; National Natural Science Foundation of China[11805238] ; National Natural Science Foundation of China[11775264] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; Anhui Provincial Natural Science Foundation[2008085QA38] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT-2020-004] ; EAST team |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000783687000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Institute of Energy, Hefei Comprehensive National Science Center ; EAST team |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128549]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Hu, Guanghai; Wang, Liang |
| 作者单位 | 1.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China 2.Ctr Energy Res, H-1121 Budapest, Hungary 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Donggui,Hu, Guanghai,Zoletnik, S.,et al. Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24. |
| APA | Wu, Donggui.,Hu, Guanghai.,Zoletnik, S..,Xu, Guosheng.,Ding, Siye.,...&Wang, Liang.(2022).Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST.PLASMA SCIENCE & TECHNOLOGY,24. |
| MLA | Wu, Donggui,et al."Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST".PLASMA SCIENCE & TECHNOLOGY 24(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。