基于折反射光学在实验先进超导托卡马克装置上开展高速广角可见光观测诊断技术的研究。

Development of high-speed and wide-angle visible observation diagnostics on Experimental Advanced Superconducting Tokamak using catadioptric optics.

作者信息

Yang J H, Yang X F, Hu L Q, Zang Q, Han X F, Shao C Q, Sun T F, Chen H, Wang T F, Li F J, Hu A L

机构信息

Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, People's Republic of China.

出版信息

Rev Sci Instrum. 2013 Aug;84(8):085102. doi: 10.1063/1.4817204.

DOI:10.1063/1.4817204

PMID:24007102

Abstract

A new wide-angle endoscope for visible light observation on the Experimental Advanced Superconducting Tokamak (EAST) has been recently developed. The head section of the optical system is based on a mirror reflection design that is similar to the International Thermonuclear Experimental Reactor-like wide-angle observation diagnostic on the Joint European Torus. However, the optical system design has been simplified and improved. As a result, the global transmittance of the system is as high as 79.6% in the wavelength range from 380 to 780 nm, and the spatial resolution is <5 mm for the full depth of field (4000 mm). The optical system also has a large relative aperture (1:2.4) and can be applied in high-speed camera diagnostics. As an important diagnostic tool, the optical system has been installed on the HT-7 (Hefei Tokamak-7) for its final experimental campaign, and the experiments confirmed that it can be applied to the investigation of transient processes in plasma, such as ELMy eruptions in H-mode, on EAST.

摘要

最近开发了一种用于实验先进超导托卡马克（EAST）可见光观测的新型广角内窥镜。光学系统的头部基于一种镜面反射设计，该设计类似于欧洲联合环形装置上的国际热核聚变实验堆式广角观测诊断设备。然而，光学系统设计已得到简化和改进。结果，该系统在380至780纳米波长范围内的整体透过率高达79.6%，对于整个景深（4000毫米），空间分辨率小于5毫米。该光学系统还具有较大的相对孔径（1:2.4），可应用于高速相机诊断。作为一种重要的诊断工具，该光学系统已安装在HT-7（合肥托卡马克-7）上进行其最终实验活动，实验证实它可应用于研究EAST上等离子体的瞬态过程，如H模式下的边缘局域模爆发。