HT-7托卡马克装置上微波辐射测量研究

Study on Electron Temperature Measured by Microwave Emission in HT-7 Tokamak

15道组成的电子回旋辐射温度测量系统,已安装在HT 7装置上,可以测量98GHz^124GHz来自于HT 7托卡马克等离子体的电子回旋辐射波的强度,从而获得电子温度。和其他电子温度诊断,如软x射线能谱记数,汤姆逊散射诊断以及边界静电探针相比,具有较好的时间分辨并可以给出电子温度分布。实验结果显示,在欧姆放电条件下,可以给出电子温度的时间演变,并在大于1. 8T的纵场条件下,给出等离子体电子温度的分布。

A set of electron cyclotron emission （ECE） system has been installed on HT-7 tokamak , which consists of 15 channels. Compared to soft x pulse height analyzer, Thomson scattering, and Langmuir probe, ECE system can provide electron temperature with high temporal resolution and electron temperature distribution profiles. The experimental results show this system can provide electron temperature time evolution and electron temperature distribution profile with central toroildal magnetic field great than 1. 8 Tesla.