Electron Cyclotron Emission Imaging on the EAST Tokamak  

作　　者：徐明 徐小圆 闻一之 马锦秀 谢锦林 高炳西 兰涛 刘阿棣 余羿 何迎花 万宝年 胡立群 高翔 

机构地区：[1]CAS Key Laboratory of Plasma Physics, University of Science and Technology of China [2]Institute of Plasma Physics, Chinese Academy of Sciences

出　　处：《Plasma Science and Technology》2011年第2期167-171,共5页等离子体科学和技术（英文版）

基　　金：supported by the National Basic Research Program of China (No. 2008CB717800);National Natural Science Foundation of China (No. 10335060);Grants from the Ministry of Education and the Chinese Academy of Sciences;CAS-JSPS Core University Program in Plasma and Nuclear Fusion;by the PRC-US Fusion Cooperation Program (Plasma Physics, Project A-5)

摘　　要：An upgraded electron cyclotron emission imaging （ECEI） system consisting of new optics lenses with necessary electronics for receiving and processing signals for two dimension （2D） ECEI diagnostics was installed on EAST. Hyperboloid lens were adopted in the new system to optimize the spatial resolutions. The mixers array of sixteen elements measured the plasma electron cyclotron emission at eight frequencies simultaneously, and the profiles of the electron temperature and its fluctuation in an area of 20 cm （vertical） × 6 cm （horizontal） could then be analyzed. Evolution of sawtooth precursor and crash in EAST was observed.An upgraded electron cyclotron emission imaging （ECEI） system consisting of new optics lenses with necessary electronics for receiving and processing signals for two dimension （2D） ECEI diagnostics was installed on EAST. Hyperboloid lens were adopted in the new system to optimize the spatial resolutions. The mixers array of sixteen elements measured the plasma electron cyclotron emission at eight frequencies simultaneously, and the profiles of the electron temperature and its fluctuation in an area of 20 cm （vertical） × 6 cm （horizontal） could then be analyzed. Evolution of sawtooth precursor and crash in EAST was observed.

关 键 词：electron cyclotron emission imaging hyperboloid lens sawtooth precursor evolution EAST tokamak 

分 类 号：TL631.24[核科学技术—核技术及应用]