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An ECR ion source was designed to meet the special requirements of an associated particle neutron generator. The magnetic field intensities inside the ECR ion source were compared when aluminum, ceramic, and quartz were used as the discharge chamber liners, respectively. The three-electrode extraction system was adjusted according to the ion source size, and the Computer Simulation Technology (CST) Studio Suite was used to simulate the trajectories of the extracted particles. By changing the electrode distance and voltage, a small target with a beam spot radius of 0.88 mm was obtained, and the target radius was within 1 mm when the accelerating electrode voltage was in the range of 13.6–14.5 kV. An extraction system with a bias electrode attached in front of the extraction hole was designed to form an anode spot, which increased the ion beam current density and thus the neutron yield.

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Design of Extraction System of ECR Ion Source for Associated Particle Neutron Generator

  • 会议论文

  • 发表日期：

    2026年

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  • Yingying Cao,
  • Pingwei Sun,
  • Jiang Shangrui,
  • Jiayu Li,
  • Sijia Zhou,
  • Jia Song,
  • Liu Shengduo,
  • Weiyang Zhang,
  • Siqi Liu,
  • Zebin Li,
  • Yuxuan Gu,
  • Yue Sun,
  • Hailong Xu,
  • Shiwei Jing

摘要

An ECR ion source was designed to meet the special requirements of an associated particle neutron generator. The magnetic field intensities inside the ECR ion source were compared when aluminum, ceramic, and quartz were used as the discharge chamber liners, respectively. The three-electrode extraction system was adjusted according to the ion source size, and the Computer Simulation Technology (CST) Studio Suite was used to simulate the trajectories of the extracted particles. By changing the electrode distance and voltage, a small target with a beam spot radius of 0.88 mm was obtained, and the target radius was within 1 mm when the accelerating electrode voltage was in the range of 13.6–14.5 kV. An extraction system with a bias electrode attached in front of the extraction hole was designed to form an anode spot, which increased the ion beam current density and thus the neutron yield.