Yang Z J, Xiao Y, Ma X D, Pan X M, Xiao J S
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Rev Sci Instrum. 2015 Apr;86(4):043501. doi: 10.1063/1.4917271.
To study the anomalous transport, a correlation electron cyclotron emission (CECE) was planned to be developed on J-TEXT for electron temperature fluctuation measurement. The spectral decorrelation method was employed for the CECE system. It was developed based on the previous 16-channel electron cyclotron emission system. They shared the optical transmission line and mixer. The CECE part consists of 4 channels. Two fixed frequency narrow band filters were used for two channels and two yttrium iron garnet (YIG) filters for the other two channels. To meet the measuring requirement, some tests have been taken for the YIG filters. The results show good performance of the filters. Gaussian optics is used to produce a good poloidal resolution. Wavenumbers resolved by the CECE diagnostic are k(θ) ≤ 1.5 rad/cm and k(r) ≤ 12 rad/cm. Some preliminary experiment results are also presented in this paper.
为了研究反常输运，计划在J-TEXT上开发一种相关电子回旋辐射（CECE）用于电子温度涨落测量。CECE系统采用了谱去相关方法。它是在之前的16通道电子回旋辐射系统的基础上开发的。它们共享光传输线和混频器。CECE部分由4个通道组成。两个通道使用了固定频率窄带滤波器，另外两个通道使用了钇铁石榴石（YIG）滤波器。为满足测量要求，对YIG滤波器进行了一些测试。结果表明滤波器性能良好。采用高斯光学来产生良好的极向分辨率。CECE诊断所分辨的波数为k(θ)≤1.5弧度/厘米和k(r)≤12弧度/厘米。本文还给出了一些初步实验结果。
