Nuclear Engineering and Technology

  • 제55권9호
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  • Pages.3126-3132
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  • 2023
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Research of aluminum nitride water load for the 4.6 GHz 500 kW LHCD system of the CFETR

  • Dingzhen Li (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Liyuan Zhang (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Lianmin Zhao (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Fukun Liu (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Min Cheng (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Huaichuan Hu (Institute of Plasma Physics, Chinese Academy of Sciences) ;
  • Taian Zhou (Institute of Plasma Physics, Chinese Academy of Sciences)
  • 투고 : 2023.02.23
  • 심사 : 2023.05.25
  • 발행 : 2023.09.25
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초록

To meet the increasing heating needs of the China Fusion Experimental Tokamak Reactor (CFETR), the output power in each Lower Hybrid Current Drive (LHCD) transmission line should be increased from 250 kW to 500 kW. Therefore, a new high-power water load must be developed for the 4.6 GHz 500 kW LHCD system. This paper aims to report the most recent research progress of the water load: aluminum nitride (AlN) ceramic is used as the media material to isolate the water and vacuum, and the radio frequency (RF) simulation results show that the return loss of the water load is less than -25dB at 4.6 GHz over a wide temperature range. Under 500 kW continuous wave (CW) operation, the maximum temperatures of the ceramic and water are separately 67 ℃ and 62 ℃, resulting in thermal deformation of the ceramic of approximately 0.003 mm. Moreover, the AlN water load was tested on the 4.6 GHz 250 kW high-power test bench and found to work well with low reflected power.

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과제정보

This work was supported by Comprehensive Research Facility for Fusion Technology Program of China under Contract No. 2018-000052-73-01-001228.

참고문헌

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