Beam optics analysis and preliminary results of 120 keV multi-slit accelerator prototype for neutral beam injector

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-08-13 DOI:10.1016/j.net.2025.103843

Longbin Liu , Yuqian Chen , Yahong Xie , Yongjian Xu , Yuming Gu , Yingcai Wang , Wen Deng , Fang Wang , Jianglong Wei , Chundong Hu

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引用次数: 0

Abstract

The performance of the ion source is critical for neutral beam injection. As a key component of the ion source, the accelerator extracts and accelerates ions from the plasma generator to the target energy. To achieve higher beam energy, a new accelerator with maximum beam energy of 120 keV was designed based on the original 80 keV multi-slit accelerator. The required grid gap modifications were analyzed using beam optics simulations. The accelerator was then integrated with a magnetic bucket plasma generator for performance evaluation. Simulation and test results demonstrate good consistency in evaluating the extraction capability. The optimum perveance of the 120 keV accelerator is approximately 1.66 × 10⁻⁶ A/V^3/2 with a beam divergence angle of 1.15°, and it is expected to be able to extract a hydrogen ion beam of about 69 A at 120 keV. These results provide important benchmarks for ion source parameter matching.

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中性束流注入器120 keV多狭缝加速器样机光束光学分析及初步结果

离子源的性能对中性束注入至关重要。加速器作为离子源的关键部件，将等离子体发生器中的离子提取并加速到目标能量。为了获得更高的束流能量，在原80 keV多缝加速器的基础上设计了最大束流能量为120 keV的新型加速器。利用光束光学模拟分析了所需的栅格间隙修正。然后将加速器与磁桶等离子体发生器集成以进行性能评估。仿真和测试结果表明，对提取能力的评价具有良好的一致性。120 keV加速器的最佳性能约为1.66 × 10−6 A/V3/2，光束发散角为1.15°，预计可以在120 keV下提取约69 A的氢离子束。这些结果为离子源参数匹配提供了重要的基准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development