中文摘要：

EAST全超导托卡马克装置上建立一套极紫外（EUV）光谱诊断系统,用于高温等离子体高电离态杂质线辐射研究。该系统利用1 200 l/mm凹面变线距全息光栅作为分光元件,工作波段50–500,波长分辨率△λ~0.16A（186.6A）,时间分辨为20 ms,空间观测范围为0–450 mm,基本覆盖EAST全超导托卡马克的主等离子体上半空间。在EAST放电期间,利用该系统获得高波长分辨率和时间响应的杂质谱图,通过对等离子体冲氩气,利用已知波长的Ar线,对谱仪进行了初步的原位标定。

英文摘要：

A high resolution EUV spectrometer has been installed on EAST tokamak for plasma diagnostic.The system employs a concave varied line spacing groove holographic grating（1 200 grooves/mm at grating center） as dispersion elements,covering wavelength range of 50–500 A,with resolution of about 0.16A  at 186.6 A,and monitoring up half of EAST plasma（0–450 mm）.The time resolution is 20 ms and the spatial resolution achieves 50 mm.During the discharge with Ar injection,good spectra were obtained.Compared to the discharge without pumping Ar at all,the Ar spectrum was clearly observed.The time behavior of the C IV（312.42 A） intensity was analyzed.