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《Nuclear Fusion and Plasma Physics》 2010-01
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Improvement of Gaussian antenna for electron cyclotron emission radiometer on HT-7 tokamak

FEI Qin-shan,LING Bi-li,TI Ang,LIU Yong,XIONG Gang, ZHANG Li-li,LI Er-zhong,GAO Xiang(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031)  
A scheme for redesigning its antenna in Gaussian optics is presented for improving the poloidal spatial resolution of the plasma electron cyclotron emission(ECE) super-heterodyne radiometer diagnostic system on the HT-7 tokamak.It is shown that the Gaussian optic loss of the radiant energy from the plasma ECE is no more than 13% by optimizing the dimensions of the circular pyramidal horn,the focus of the convex lens of the antenna system and their relative positions when the Gaussian bean radius of the emission of the ECE novel second harmonic is only 30mm or so.
【CateGory Index】: TL631.24
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