Investigation of electron cyclotron wave absorption and current drive in CFETR hybrid scenario plasmas  

作　　者：王瀚林 王晓洁 张超 汤允迎 刘甫坤 Hanlin WANG;Xiaojie WANG;Chao ZHANG;Yunying TANG;Fukun LIU(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China;University of Science and Technology of China,Hefei 230026,People’s Republic of China)

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [2]University of Science and Technology of China,Hefei 230026,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第9期17-25,共9页等离子体科学和技术（英文版）

基　　金：supported by the National Key R&D Program of China(Nos.2017YFE0300500 and 2017YFE0300503);the Comprehensive Research Facility for Fusion Technology Program of China(No.2018-000052-73-01-001228).

摘　　要：The investigation of electron cyclotron(EC)wave absorption and current drive has been performed for the China Fusion Engineering Test Reactor(CFETR)hybrid scenarios using the TORAY code.To achieve the physics goal of the EC system in CFETR,a total of four wave frequency values and nine locations of launching antennas have been considered,and the injection poloidal and toroidal angles have been scanned systematically.The electron cyclotron current drive(ECCD)efficiency of the 170 GHz EC system is quite low due to the wave-particle interactions being located at the low-field side.To optimize the ECCD efficiency,the wave frequency is increased up to 221–250 GHz,which leads to the power being deposited at the high-field side.The off-axis ECCD efficiency can be significantly enhanced by launching EC waves from the top window and injecting them towards the high-field side.The optimized ECCD efficiency atρ=0.32 and atρ=0.4 is 2.9 and 2.2 times that of 170 GHz,respectively.

关 键 词：current drive ECCD efficiency CFETR 

分 类 号：TL62[核科学技术—核技术及应用] O53[理学—等离子体物理]