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Beam Optical Analysis of the 120 keV Slit Accelerator for High-power Ion Source
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Yu-qian CHEN1, 2, Long-bin LIU1, 2, Ya-hong XIE3, *, Li-xin YANG1, 2, Chun-dong HU3
Science Technology and Engineering | 2025, 25(6) : 2364 - 2370
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Science Technology and Engineering | 2025, 25(6): 2364-2370
• Papers·Nuclear Technology •
Beam Optical Analysis of the 120 keV Slit Accelerator for High-power Ion Source
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Yu-qian CHEN1, 2, Long-bin LIU1, 2, Ya-hong XIE3, *, Li-xin YANG1, 2, Chun-dong HU3
Affiliations
  • 1 School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China
  • 2 Jiangxi Engineering Technology Research Center of Nuclear Radiation Detection and Application, Nanchang 330013, China
  • 3 Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
Published: 2025-02-28 doi: 10.12404/j.issn.1671-1815.2402214
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To further meet the plasma heating requirements of EAST (experimental advanced superconducting tokamak) device, NBI (neutral beam injection) system requires higher beam power. Accordingly, the EAST NBI laboratory has developed a 120 keV accelerator for this purpose. The analysis of the whole accelerator needs to be carried out from various perspectives such as beam optics, insulation support, active cooling and materials. Taking into account factors such as plasma parameters, electrostatic lens, voltage resistance between grids, and assembly errors, the numerical simulation program was utilized to beam optics analysis for the slit tetrode ion source accelerator. Beam trajectory, electric field strength distribution, and beam divergence angle were investigated and optimized to preliminarily determine the grid parameters of the new multi-slit accelerator. The accelerator obtains the beam with the minimum divergence angle of 0.6° in the vertical direction with perveance of 1.52 μp, meeting the design criteria for beam current intensity of 60 A and divergence angle below 1° of the ion source.

neutral beam injection  /  accelerator  /  perveance  /  beam divergence angle
Yu-qian CHEN, Long-bin LIU, Ya-hong XIE, Li-xin YANG, Chun-dong HU. Beam Optical Analysis of the 120 keV Slit Accelerator for High-power Ion Source[J]. Science Technology and Engineering, 2025 , 25 (6) : 2364 -2370 . DOI: 10.12404/j.issn.1671-1815.2402214
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Article Info
doi: 10.12404/j.issn.1671-1815.2402214
  • Receive Date：2024-03-28
  • Online Date：2025-07-27
  • Published：2025-02-28
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  • Received：2024-03-28
  • Revised：2024-12-11
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Affiliations
    1 School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China
    2 Jiangxi Engineering Technology Research Center of Nuclear Radiation Detection and Application, Nanchang 330013, China
    3 Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
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表12种不同金属材料的力学参数
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Number of
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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