15-19 April 2018
Paradise Point Resort & Spa
America/Los_Angeles timezone

2.7 Simultaneous measurement of CVI, NeX and LiIII charge exchange lines on EAST

16 Apr 2018, 10:45
2h 15m
Paradise Point Resort & Spa

Paradise Point Resort & Spa

1404 Vacation Rd, San Diego, CA 92109

Speakers

Yingying Li (Institute of Plasma Physics, Chinese Academy of Sciences) Yixuan Zhou (School of Nuclear Science and Technology, University of Science and Technology of China) Di Jiang (Institute of Plasma Physics, Chinese Academy of Sciences) Wei Tao (School of Nuclear Science and Technology, University of Science and Technology of China) Ze Chen (School of Nuclear Science and Technology, University of Science and Technology of China) Jia Fu (Institute of Plasma Physics, Chinese Academy of Sciences) Bo Lyu (Institute of Plasma Physics, Chinese Academy of Sciences) Yuejiang Shi (Department of Nuclear Engineering, Seoul National University) Minyou Ye (School of Nuclear Science and Technology, University of Science and Technology of China) Baonian Wan (Institute of Plasma Physics, Chinese Academy of Sciences)

Description

Charge exchange spectra from the interaction of fully ionized Carbon impurity ions and injected neutral beam on EAST have been utilized to provide the plasma ion temperature and rotation velocity since the cCXRS was installed on EAST at 2014. However, the concentration of carbon became especially low on EAST with the tungsten divertor in the latest experimental campaign, it is necessary to investigate the CX lines from the other impurity ions. The cCXRS system was enhanced recently to extend its wavelength coverage and preserve the spatial channels at the same time. A pixel, back-illuminated frame-transfer CCD camera with on-chip multiplication gain was used. The bandpass filter centered on 529.1nm was removed and one entrance slit was used to enable a wide spectral band at one acquisition, and the emission lines of CVI at 529.1 nm, of NeX at 524.9 nm, and of LiIII at 516.7 nm could be observed simultaneously. The system contains 29 channels, and one channel is used for the real-time wavelength calibration. The simultaneous measurement of CVI, NeX, and LiIII lines was performed by puffing neon gas and dropping lithium power at the same time during the 2016 EAST experimental campaign. In the paper, the experimental hardware is described and preliminary measurements will be shown.

Primary author

Yingying Li (Institute of Plasma Physics, Chinese Academy of Sciences)

Co-authors

Yixuan Zhou (School of Nuclear Science and Technology, University of Science and Technology of China) Di Jiang (Institute of Plasma Physics, Chinese Academy of Sciences) Wei Tao (School of Nuclear Science and Technology, University of Science and Technology of China) Ze Chen (School of Nuclear Science and Technology, University of Science and Technology of China) Jia Fu (Institute of Plasma Physics, Chinese Academy of Sciences) Bo Lyu (Institute of Plasma Physics, Chinese Academy of Sciences) Yuejiang Shi (Department of Nuclear Engineering, Seoul National University) Minyou Ye (School of Nuclear Science and Technology, University of Science and Technology of China) Baonian Wan (Institute of Plasma Physics, Chinese Academy of Sciences)

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