Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Zeff measurement based on bremsstrahlung continuum in HL-2A tokamak

DOI PDF 被引用文献3件 参考文献9件
  • Hangyu Zhou
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Zhengying Cui
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Shigeru Morita
    National Institute for Fusion Science 2 , Toki, Gifu 509-5292, Japan
  • Bingzhong Fu
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Motoshi Goto
    National Institute for Fusion Science 2 , Toki, Gifu 509-5292, Japan
  • Ping Sun
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Chunfeng Dong
    National Institute for Fusion Science 2 , Toki, Gifu 509-5292, Japan
  • Yadong Gao
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Yuan Xu
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Ping Lu
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Qingwei Yang
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China
  • Xuru Duan
    Southwestern Institute of Physics 1 , P.O. Box 432, Chengdu 610041, China

抄録

<jats:p>A grazing-incidence flat-field extreme ultraviolet (EUV) spectrometer has been newly developed in HL-2A tokamak. Typical spectral lines are observed from intrinsic impurities of carbon, oxygen, iron, and extrinsic impurity of helium in the wavelength range of 20 Å–500 Å. Bremsstrahlung continuum is measured at different electron densities of HL-2A discharges to calibrate absolute sensitivity of the EUV spectrometer system and to measure effective ionic charge, Zeff. The sensitivity of a vacuum ultraviolet (VUV) spectrometer system is also absolutely calibrated in overlapped wavelength range of 300 Å–500 Å by comparing the intensity between VUV and EUV line emissions.</jats:p>

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