Development of high-speed vacuum ultraviolet spectroscopy using a modified Seya-Namioka monochromator and channel electron multiplier detector in the HL-2A tokamak

Autor:	Zheng Dianlin, Chunfeng Dong, Zhengying Cui, Kai Zhang, Ping Lu, Z. T. Liu, Zhongbing Shi, Qingwei Yang, Ping Sun, Bingzhong Fu
Rok vydání:	2018
Předmět:	Tokamak Materials science Argon Spectrometer business.industry Detector chemistry.chemical_element Plasma 01 natural sciences Cathode 010305 fluids & plasmas law.invention Optics chemistry law 0103 physical sciences 010306 general physics business Instrumentation Helium Monochromator
Zdroj:	Review of Scientific Instruments. 89:10D134
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.5037504
Popis:	A high-speed vacuum ultraviolet monochromator is developed for the HL-2A tokamak through the introduction of a novel channel electron multiplier in a modified Seya-Namioka spectrometer. A good signal to noise ratio of above 2000 is attained in the development phase of the system with typical operating parameters for observing routine HL-2A plasmas. The wavelength calibration is performed using characteristic line emissions from a hollow cathode light source with helium and argon discharges. The first measurement result of the monochromator at a sample rate of 60 kHz is presented in comparison with the visible Dα signals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cb59d1bc96003c8e68712e3f0a82bc5 https://doi.org/10.1063/1.5037504 Zobrazit plný text záznamu