Wavelength calibration and spectral analysis of vacuum ultraviolet spectroscopy in EAST

作     者：计华健 张洪明 吕波 Cheonho BAE 何梁 林子超 尹相辉 沈永才 戴舒宇 Huajian JI;Hongming ZHANG;Bo LYU;Cheonho BAE;Liang HE;Zichao LIN;Xianghui YIN;Yongcai SHEN;Shuyu DAI

作者机构：Institute of Plasma PhysicsChinese Academy of SciencesHefei 230031People’s Republic of China Science Island BranchGraduate SchoolUniversity of Science and Technology of ChinaHefei 230031People’s Republic of China College of Electrical EngineeringUniversity of South ChinaHengyang 421001People’s Republic of China School of Physics and Materials EngineeringHefei Normal UniversityHefei 230601People’s Republic of China School of PhysicsDalian University of TechnologyDalian 116024People’s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2024年第26卷第8期

页      面：37-43页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：partially supported by National Natural Science Foundation of China(Nos.U23A2077,12175278,12205072) the National Magnetic Confinement Fusion Science Program of China(Nos.2019YFE0304002,2018YFE0303103) the Comprehensive Research Facility for Fusion Technology Program of China(No.2018-000052-73-01-001228) Major Science and Technology Infrastructure Maintenance and Reconstruction Projects of the Chinese Academy of Sciences(2021) the University Synergy Innovation Program of Anhui Province(No.GXXT2021-029) 

主　　题：vacuum ultraviolet spectroscopy wavelength calibration impurity spectra 

摘      要：A vacuum ultraviolet(VUV)spectroscopy with a focal length of 1 m has been engineered specifically for observing edge impurity emissions in Experimental Advanced Superconducting Tokamak(EAST).In this study,wavelength calibration for the VUV spectroscopy is achieved utilizing a zinc *** grating angle and charge-coupled device(CCD)position are carefully calibrated for different wavelength *** wavelength calibration of the VUV spectroscopy is crucial for improving the accuracy of impurity spectral data,and is required to identify more impurity spectral lines for impurity transport *** spectra of EAST plasmas have also been obtained in the wavelength range of 50–300 nm with relatively high spectral *** is found that the impurity emissions in the edge region are still dominated by low-Z impurities,such as carbon,oxygen,and nitrogen,albeit with the application of fulltungsten divertors on the EAST tokamak.