EAST托卡马克早期H模实验边界局域模特征的统计分析  

Statistical analysis on the characteristics of edge-localized mode in initial H-mode experiments on EAST Tokamak

作　　者：刘程鸿 林新 丁楠 丁根凡 段莫疑 杨清泉 钟方川[1] 王福琼 LIU Chenghong;LIN Xin;DING Nan;DING Genfan;DUAN Moyi;YANG Qingquan;ZHONG Fangchuan;WANG Fuqiong(College of Science,Donghua University,Shanghai,China;Institute of Plasma Physics,HFIPS,Chinese Academy of Sciences,Hefei,Anhui,China)

机构地区：[1]东华大学理学院,上海 [2]中科院合肥物质科学研究院等离子体物理研究所,安徽合肥

出　　处：《东华大学学报（自然科学版）》2024年第2期153-159,共7页Journal of Donghua University(Natural Science)

基　　金：国家重点研发计划(2019YFE03030001,2017YFE0301104);国家自然科学基金(12005257)。

摘　　要：为分析EAST托卡马克早期(2010—2014年)高约束运行模式(H模)中边界局域模(ELM)与哪些参数具有强相关性,在验证有效性的基础上,采用主打击点处Dα辐射的相对涨落来定量表征边界局域模幅度,建立EAST托卡马克早期H模下ELM特征数据库。统计分析表明,ELM频率随边界安全因子的增大而减小,2010年type-ⅢELM的频率随总加热功率的增大而增大。这与其他装置或2015年以后EAST装置上得到的结果不一致,部分原因是碳杂质水平的变化。碳杂质水平是影响EAST托卡马克早期H模实验中ELM行为的重要因素之一。To analyze which parameters have strong correlations with the edge-localized mode(ELM)in early EAST Tokamak H-mode discharge,a statistical database of ELM characteristics for the early H-mode experiments(from 2010 to 2014)on EAST Tokamak has been established based on the successful effectiveness verification of utilizing the relative fluctuation of the Dαemission to estimate the amplitude of edge-localized modes quantitatively.Statistical analysis indicates that ELM frequency decreases with the increase of edge safety factor q 95,type-ⅢELM frequency increases with the increase of total heating power in 2010,different from the results on the other Tokamaks or EAST after 2015,partly because the level of carbon impurity changes.The carbon impurity is one of the critical factors affecting the frequency of ELMs in early H-mode experiments on EAST Tokamak.

关 键 词：EAST托卡马克 边界局域模 统计分析 碳杂质 

分 类 号：O534[理学—等离子体物理]