Nuclear Engineering and Technology

  • 제56권2호
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  • Pages.546-551
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  • 2024
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Experimental and simulation study on the backstreaming positive ions on the quarter-size negative ion source for CRAFT NNBI test facility

  • Yongjian Xu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Yuwen Yang (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Jianglong Wei (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Ling Yu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Wen Deng (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Rixin Wang (Anhui University) ;
  • Yuming Gu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Chundong Hu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences) ;
  • Yahong Xie (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)
  • 투고 : 2023.07.20
  • 심사 : 2023.10.22
  • 발행 : 2024.02.25
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초록

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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과제정보

The authors are very grateful to the other members of the ASIPP NBI team for their continuous support and excellent work. This work was partly supported by the National Natural Science Foundation of China (Contract No. 11975262), and the Comprehensive Research Facility for Fusion Technology Program of China (Contract No. 2018-000052-73-01-001228).

참고문헌

  1. A. Kojima, et al., Nucl. Fusion 55 (2015), 063006. https://doi:10.1088/0029-5515/55/6/063006. 
  2. D. Wunderlich, et al., Nucl. Fusion 61 (2021), 096023. https://doi:10.1088/1741-4326/ac1758. 
  3. M. Bacal, et al., Plasma Sources Sci. Technol. 29 (2020), 033001. https://doi:10.1088/1361-6595/ab6881. 
  4. V. Toigo, et al., Fusion Eng. Des. 168 (2021), 112622, https://doi.org/10.1016/j.fusengdes.2021.112622. 
  5. L. Schiesko, et al., Nucl. Fusion 51 (2011), 113021. https://doi:10.1088/0029-5515/51/11/113021. 
  6. G. Fubiani, et al., Phys. Rev. ST Accel. Beams 11 (2008), 014202. https://doi:10.1103/PhysRevSTAB.11.014202. 
  7. N. Umeda, et al., Fusion Eng. Des. 84 (2009) 1875. https://doi:10.1016/j.fusengdes.2008.12.018. 
  8. Y.M. Gu, et al., Fusion Eng. Des. 171 (2021), 112600, https://doi.org/10.1016/j.fusengdes.2021.112600. 
  9. Y.H. Xie, et al., Fusion Eng. Des. 167 (2021), 112377, https://doi.org/10.1016/j.fusengdes.2021.112377. 
  10. Y.W. Yang, et al., Nucl. Eng. Technol. 55 (2023). 
  11. J.L. Wei, et al., Phys. Plasmas 30 (2023), 033102, https://doi.org/10.1063/5.0139827.