应用于EAST离子回旋上的共轭-T  

The conjugate-T applied to ion cyclotron wave resonance heating system of EAST

作　　者：程健 刘鲁南 CHENG Jian;LIU Lunan(The 38th Research Institute of China Electronics Technology Group Corporation,Hefei 230088,China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088 [2]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《技术与市场》2025年第4期1-7,共7页Technology and Market

摘　　要：离子回旋波加热作为一种重要的加热手段,已经被应用于全世界主要的托卡马克装置中。实验型先进全超导托卡马克(EAST)装置上的离子回旋波加热同样发挥了重要作用。但在EAST等离子体放电实验中,L-H模转换以及边界局域模(ELM)爆发时,离子回旋天线耦合阻抗的快速变化容易导致传输线和天线的打火,严重制约系统的高功率稳态运行和传输效率。为了提高加热效率并解决天线阻抗震荡给离子回旋系统带来的不良影响,介绍一种阻抗匹配装置,名为“共轭-T”。理论计算表明共轭-T这种匹配结构能容忍一定程度上的负载变化,体现出一定的负载耐受性。最终,在EAST上开展了相关的实验进一步验证了该理论计算的正确性。As an important heating method,ion cyclotron wave resonance heating(ICRH)has been used in the main tokamak devices all around the world.ICRH also plays an important role on EAST.During the L-H mod transition and in the type-I ELMy plasma,the ICRH antenna load is quickly changed with fluctuation of the edge plasma parameters and leads to arcing on the transmission line and antenna,which has severely restricted the steady-state operation and high-power transmission efficiency.This paper mainly introduces a matching device called conjugate-T in order to solve the adverse effects of antenna impedance oscillations and improve heating efficiency.Numerical calculations show that the conjugate-T matching structure can tolerate load changes to a certain extent and reflects a certain load tolerance.Finally,it is found that the experimental data agree with numerical calculations on EAST.

关 键 词：实验型先进全超导托卡马克(EAST) 离子回旋波加热 共轭-T 驻波比(VSWR) 

分 类 号：TL62[核科学技术—核技术及应用]