Space-Resolved VUV and EUV Spectrometers in HL-2A

CUI Zhengying (崔正英); ZHOU Hangyu (周航宇); S. MORITA; FU Bingzhong (傅炳忠); XU Yuan (徐媛); DONG Chunfeng (董春凤); YANG Qingwei (杨青巍)

doi:10.1088/1009-0630/15/2/06

Plasma Science and Technology > 2013 > 15(2): 110-114. > DOI: 10.1088/1009-0630/15/2/06

CUI Zhengying (崔正英), ZHOU Hangyu (周航宇), S. MORITA, FU Bingzhong (傅炳忠), XU Yuan (徐媛), DONG Chunfeng (董春凤), YANG Qingwei (杨青巍). Space-Resolved VUV and EUV Spectrometers in HL-2A[J]. Plasma Science and Technology, 2013, 15(2): 110-114. DOI: 10.1088/1009-0630/15/2/06

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Space-Resolved VUV and EUV Spectrometers in HL-2A

1 Southwestern Institute of Physics, Chengdu 610041, China 2 National Institute for Fusion Science, Toki 509-5292, Gifu, Japan

Funds: partially supported by National Natural Science Foundation of China (Nos. 10975048 and 11175061), and by the JSPS-NRF-NSFC A3 Foresight Program in the Field of Plasma Physics (No. 11261140328)

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Received Date: January 06, 2012

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Abstract

Abstract

A normal incidence vacuum ultraviolet (VUV) and a grazing incidence extreme ultraviolet (EUV) spectrometers have been developed for the edge and core impurity measure- ments in HL-2A tokamak. The VUV and the EUV spectrometers cover wavelength ranges of 300»3200 Å and 50~500 Å, respectively. A spatial resolution of 2 mm has been achieved for the VUV spectrometer when a space-resolved slit 50 ¹m in width is used. The space-resolved slit is placed between the entrance slit and the grating of the spectrometer. The spectral resolutions of 0.15 Å for the VUV spectrometer in the wavelength coverage of the concave 1200 grooves/mm grating and of 0.22Å for the EUV spectrometer at λ=200Å with a flat-field laminar-type holo- graphic grating are obtained. The sensitivity of the VUV spectrometer was calibrated in situ with the plasma bremsstrahlung radiation. The experimental results from both spectrometers are presented, especially the line intensity radial profiles measured by the VUV spectrometer.
- VUV spectra,
- EUV spectra,
- spectrometer,
- spatial resolution

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