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논문 기본 정보

자료유형
학술저널
저자정보
Xu Yongjian (Institute of Plasma Physics, Hefei Institutes of Physical Science) Yang Yuwen (Institute of Plasma Physics, Hefei Institutes of Physical Science) Wei Jianglong (Institute of Plasma Physics, Hefei Institutes of Physical Science) Yu Ling (Institute of Plasma Physics, Hefei Institutes of Physical Science) Deng Wen (Institute of Plasma Physics, Hefei Institutes of Physical Science) Wang Rixin (Anhui University) Gu Yuming (Institute of Plasma Physics, Hefei Institutes of Physical Science) Hu Chundong (Institute of Plasma Physics, Hefei Institutes of Physical Science) Xie Yahong (Institute of Plasma Physics, Hefei Institutes of Physical Science)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology Vol.56 No.2
발행연도
2024.2
수록면
546 - 551 (6page)
DOI
10.1016/j.net.2023.10.031

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초록· 키워드

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As an effective methods of plasma heating, neutral beam injection (NBI) systems based on negative hydrogen ion sources will be utilized in future magnetic-confinement nuclear fusion experiments. Because of the collisions between the fast negative ions and the neutral background gas, the positive ions are inevitable created in the acceleration region in the negative NBI system. These positive ions are accelerated back into the ion source and become high energy backstreaming ions. In order to explore the characters of backstreaming ions, the track and power deposition of backstreaming H+ beam is estimated using the experimental and simulation methods at NNBI test facility. Results show that the flux of backstreaming positive ions is 1.93 % of that of negative ion extraction from ion source, and the magnet filed in the beam source has an effect on the backstreaming positive ions propagation.

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