东方超环中的二维软X射线阵列。

2-D soft x-ray arrays in the EAST.

作者信息

Chen Kaiyun, Xu Liqing, Hu Liqun, Duan Yanmin, Li Xueqin, Yuan Yi, Mao Songtao, Sheng Xiuli, Zhao Jinlong

机构信息

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.

Hefei Juneng Electro Physics, Hefei 230031, China.

出版信息

Rev Sci Instrum. 2016 Jun;87(6):063504. doi: 10.1063/1.4953837.

DOI:10.1063/1.4953837

PMID:27370451

Abstract

A high spatial and temporal resolution soft x-ray (SXR) imaging diagnostic has been installed in EAST for the study of magnetohydrodynamics activities and core high-Z impurity transport. Up to 122 lines of sight view the poloidal plasma from three directions (two up-down symmetrical horizontal arrays and one vertical array), which renders the diagnostic able to provide detailed tomographic reconstructions under various conditions. Fourier-Bessel method based on flux coordinates was employed for 2-D SXR tomographic reconstruction. Examples of several events measured by SXR diagnostic in EAST are shown, namely the crash patterns of sawtooth, periodical burst of edge localized modes, and the transport of high-Z intrinsic impurities.

摘要

一台具有高空间和时间分辨率的软X射线（SXR）成像诊断设备已安装在EAST上，用于研究磁流体动力学活动和核心高Z杂质输运。多达122条视线从三个方向（两个上下对称的水平阵列和一个垂直阵列）观察极向等离子体，这使得该诊断设备能够在各种条件下提供详细的断层重建。基于通量坐标的傅里叶-贝塞尔方法用于二维SXR断层重建。展示了EAST中SXR诊断测量的几个事件的示例，即锯齿崩溃模式、边缘局域模的周期性爆发以及高Z本征杂质的输运。