Space-resolved vacuum-ultraviolet spectroscopy for measuring impurity emission from divertor region of EAST tokamak
文献类型：期刊论文
| 作者 | HE,Liang3,4; SHEN,Yongcai2,5; ZHANG,Hongming4; LYU,Bo3,4; BAE,Cheonho4; JI,Huajian8; LI,Chaoyang1; FU,Jia4; DU,Xuewei7; WANG,Fudi4
|
| 刊名 | Plasma Science and Technology
 |
| 出版日期 | 2022-05-26 |
| 卷号 | 24 |
| ISSN号 | 1009-0630 |
| 关键词 | impurity measurement vacuum-ultraviolet spectrometer EAST divertor |
| DOI | 10.1088/2058-6272/ac5f81 |
| 通讯作者 | ZHANG,Hongming() |
| 英文摘要 | Abstract The measurement of impurity distribution in the divertor region of tokamaks is key to studying edge impurity transport. Therefore, a space-resolved vacuum-ultraviolet (VUV) spectrometer is designed to measure impurity emission in the divertor region on EAST. For good spectral resolution, an eagle-type VUV spectrometer with 1 m long focal length with spherical holograph grating is used in the system. For light collection, a collimating mirror is installed between the EAST plasma and the VUV spectrometer to extend the observing range to cover the upper divertor region. Two types of detectors, i.e. a back-illuminated charge-coupled device detector and a photomultiplier-tube detector, are adopted for the spectral measurement and high-frequency intensity measurement for feedback control, respectively. The angle between the entrance and exit optical axis is fixed at 15°. The detector can be moved along the exit axis to maintain a good focusing position when the wavelength is scanned by rotating the grating. The profile of impurity emissions is projected through the space-resolved slit, which is set horizontally. The spectrometer is equipped with two gratings with 2400 grooves/mm and 2160 grooves/mm, respectively. The overall aberration of the system is reduced by accurate detector positioning. As a result, the total spectral broadening can be reduced to about 0.013 nm. The simulated performance of the system is found to satisfy the requirement of measurement of impurity emissions from the divertor area of the EAST tokamak. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:PST_24_6_064003 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/129643]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | ZHANG,Hongming |
| 作者单位 | 1.Anhui Spectreation Instrument Co. Ltd, Hefei 230088, People’s Republic of China 2.School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, People’s Republic of China 3.University of Science and Technology of China, Hefei 230026, People’s Republic of China 4.Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 5.Institute of Energy, Comprehensive National Science Center, Hefei 230026, People’s Republic of China 6.School of Physics, Dalian University of Technology, Dalian 116024, People’s Republic of China 7.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People’s Republic of China 8.School of Electrical Engineering, University of South of China, Hengyang 420001, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | HE,Liang,SHEN,Yongcai,ZHANG,Hongming,et al. Space-resolved vacuum-ultraviolet spectroscopy for measuring impurity emission from divertor region of EAST tokamak[J]. Plasma Science and Technology,2022,24. |
| APA | HE,Liang.,SHEN,Yongcai.,ZHANG,Hongming.,LYU,Bo.,BAE,Cheonho.,...&DAI,Shuyu.(2022).Space-resolved vacuum-ultraviolet spectroscopy for measuring impurity emission from divertor region of EAST tokamak.Plasma Science and Technology,24. |
| MLA | HE,Liang,et al."Space-resolved vacuum-ultraviolet spectroscopy for measuring impurity emission from divertor region of EAST tokamak".Plasma Science and 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。