Performance comparison of the two ICRF antennas in EAST  

作　　者：Hua Yang Cong-Feng Wu Sai Dong Yan-Ping Zhao Xin-Jun Zhang Lei Shang 

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

出　　处：《Nuclear Science and Techniques》2016年第2期1-5,共5页核技术（英文）

基　　金：Supported by the National Magnetic Confinement Fusion Science Program of China(No.2015GB101001);the Natural Science Foundation of China(No.11375236)

摘　　要：The experimental advanced superconducting Tokamak has two suits of ion cyclotron radio frequency heating systems, in which the two antennas are of different structures. Their performance is assessed and compared by CST microwave studio. The radiating capacity of antennas and the arcing around them are estimated. The impurity release is analyzed by the radio frequency(RF) potential in the plasma sheath. The simulation results show that the radiating capacity for the folded antenna(I-port) is better than those for the double loops antenna(B-port). However,the folded antenna is worse than the double loops antenna in terms of breakdown. Moreover, the impurity production is relevant to spectrum shaping. The RF potential at(0, π,π, 0) phasing with the peak of spectrum k//= 8.5 m^(-1)is lower than the one with other phases. The impurity is reduced obviously when the folded antenna is powered with(0, π, π, 0) phasing.The experimental advanced superconducting Tokamak has two suits of ion cyclotron radio frequency heating systems, in which the two antennas are of different structures. Their performance is assessed and compared by CST microwave studio. The radiating capacity of antennas and the arcing around them are estimated. The impurity release is analyzed by the radio frequency（RF） potential in the plasma sheath. The simulation results show that the radiating capacity for the folded antenna（I-port） is better than those for the double loops antenna（B-port）. However,the folded antenna is worse than the double loops antenna in terms of breakdown. Moreover, the impurity production is relevant to spectrum shaping. The RF potential at（0, π,π, 0） phasing with the peak of spectrum k//= 8.5 m^（-1）is lower than the one with other phases. The impurity is reduced obviously when the folded antenna is powered with（0, π, π, 0） phasing.

关 键 词：环天线 性能比较 ICRF 超导托卡马克装置 等离子体鞘层 辐射能力 电位分析 微波工作室 

分 类 号：TL631.24[核科学技术—核技术及应用]