首页|A dual-route optical emission spec-troscopy diagnostic with wide spectral range and high wavelength resolution on HL-2A tokamak

A dual-route optical emission spec-troscopy diagnostic with wide spectral range and high wavelength resolution on HL-2A tokamak

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A dual-route optical emission spectroscopy(D-OES)diagnostic is newly developed to monitor the optical emission from the X-point plasma region on the HL-2A tokamak.This diagnostic is composed of an imaging system,a beam-splitting system for dual-route measurements,fiber bundles,a spectrometer system,and a control and acquisition system.One route is used to obtain wide-spectral-range spectra,and the other route is used to acquire high-wavelength-resolution line shapes.The spectral resolution of the wide-range spectrometers is 0.8 nm with a coverage of 800 nm(@200-1000 nm).The spectral resolution of the high-resolution spectrometer is 0.01 nm with a coverage of 6 nm(@200-660 nm).The spatial resolution of each route of D-OES is about 4 cm with 11 channels.The temporal resolution is 16 ms at maximum in the single-channel mode.Wide-range spectra(containing Balmer series and a Fulcher band)and highly resolved Hα line shapes are obtained by D-OES in the hydrogen glow discharge in the lab.D-OES measurements are carried out in the high-density deuterium experiments of HL-2A.The electron density ne and deuterium temperature TD in the X-point multifaceted asymmetric radiation from the edge(MARFE)region are derived simultaneously by fitting the measured Dα shape.The density ne is observed to increase from～8.7 × 1018 m-3 to～7.8 × 1019 m-3,and the temperature TD drops from～14.4 eV to～2.3 eV after the onset of MARFE in the discharge #38260.

optical emission spectroscopyBalmer seriestokamak

陈越、高继昆、龙婷、聂林、高金明、马尧、黄渊、田文静、刘延民、朱晓东、庄革、钟武律、许敏

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School of Physical Sciences,School of Nuclear Sciences and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China

Southwestern Institute of Physics,Chengdu 610041,People's Republic of China

Tsinghua University,Beijing 100084,People's Republic of China

National MCF Energy Research and Development Program of ChinaNational MCF Energy Research and Development Program of ChinaNational MCF Energy Research and Development Program of China国家自然科学基金国家自然科学基金Sichuan Natural Science FoundationSichuan Natural Science FoundationSichuan Natural Science Foundation

2018YFE03011022022YFE031000042018YFE 030310212375210123052382022NSFSC17912022JDRC00142022TFQCCXTD

2024

10.1088/2058-6272/ad0c95

等离子体科学和技术(英文版)
中国科学院合肥物质科学研究所 中国力学学会

等离子体科学和技术(英文版)

EI
影响因子：0.297
ISSN：1009-0630
年,卷(期)：2024.26(3)
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