德克萨斯联合实验托卡马克上高分辨率软X射线成像系统的设计

Design of the high-resolution soft X-ray imaging system on the Joint Texas Experimental Tokamak.

作者信息

Li Jianchao, Ding Yonghua, Zhang Xiaoqing, Xiao Zhengyu, Zhuang Ge

机构信息

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electric and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

出版信息

Rev Sci Instrum. 2014 Nov;85(11):11E414. doi: 10.1063/1.4886432.

DOI:10.1063/1.4886432

PMID:25430321

Abstract

A new soft X-ray diagnostic system has been designed on the Joint Texas Experimental Tokamak (J-TEXT) aiming to observe and survey the magnetohydrodynamic (MHD) activities. The system consists of five cameras located at the same toroidal position. Each camera has 16 photodiode elements. Three imaging cameras view the internal plasma region (r/a < 0.7) with a spatial resolution about 2 cm. By tomographic method, heat transport outside from the 1/1 mode X-point during the sawtooth collapse is found. The other two cameras with a higher spatial resolution 1 cm are designed for monitoring local MHD activities respectively in plasma core and boundary.

摘要

一种新的软X射线诊断系统已在德克萨斯联合实验托卡马克（J-TEXT）上设计完成，旨在观测和研究磁流体动力学（MHD）活动。该系统由位于同一环向位置的五台相机组成。每台相机有16个光电二极管元件。三台成像相机用于观测内部等离子体区域（r/a < 0.7），空间分辨率约为2厘米。通过断层扫描方法，发现了锯齿崩溃期间1/1模X点向外的热传输。另外两台空间分辨率更高（1厘米）的相机分别用于监测等离子体核心和边界处的局部MHD活动。