【作者】 石中兵； 蒋敏； 钟武律； 杨曾辰； 张博宇； 施培万； 陈伟； 刘泽田； 傅炳忠； 刘仪； 丁玄同； 杨青巍；

【Author】 SHI Zhong-bing;JIANG Min;ZHONG Wu-lu;YANG Zeng-cheng;ZHANG Bo-yu;SHI Pei-wan;CHEN Wei;LIU Ze-tian;FU Bin-zhong;LIU Yi;DING Xuan-tong;YANG Qing-wei;Southwestern Institute of Physics;Xihua University;

【机构】 核工业西南物理研究院； 西华大学；

【摘要】 本文介绍了为HL-2A装置研制的192道(极向24道,径向8道)电子回旋辐射成像(ECEI)系统和64道(极向8道,径向4道,环向2道)微波反射成像(MIR)系统,分别用于测量2维/3维等离子体电子温度和电子密度扰动演化图像。其中,ECEI系统由准光学系统、24道前端天线混频阵列和24道后端电子学组成,工作频率为60~135 GHz,径向空间分辨为1 cm,极向空间分辨为2 cm;MIR系统由准光学系统、四频率微波发射机和16道接收机组成,工作频率为32~38 GHz,极向空间分辨为2 cm,径向空间分辨为1~2 cm。这两套系统目前都已完成实验室的调试与标定,标定结果与模拟结果基本一致。利用发展的ECEI系统在HL-2A装置上首次直接观察到锯齿、撕裂模的空间结构及变化过程。更多还原

【Abstract】 Electron cyclotron emission imaging(ECEI) and microwave imaging reflectometry(MIR)systems have been developed on the HL-2A tokamak to visualize the two-dimensional density and temperature fluctuations.The ECEI system is comprised of a quasi-optical system,a front-end 24 channel heterodyne imaging array with a tunable RF from 60 to 110 GHz,and a set of back-end ECEI electronics that together generate 24(poloidal)×8(radial) = 192 channel images of the 2D temperature fluctuations.The MIR system is comprised of a quasi-optical system,a four frequency microwave source and receiver system that generate 8(poloidal)×4(radial) ×2(toroidal) = 64 channel images of density fluctuations.Both systems will separately utilize the same port window with a height of 600 mm and width of 100 mm,located 662 mm from the plasma center.Simulations and laboratory calibrations of both optical systems have been conducted.Characteristics of both systems are presented.Preliminary experimental results with ECEI on HL-2A are obtained.The spatial structure evolutions of sawooth activities and tearing mode have been observed.更多还原