Beam-pulsing study for a 100 MeV proton cyclotron

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-08-01 DOI:10.1016/j.nimb.2025.165805

Ji Luyu, An Shizhong, Huang Peng, Zheng Xia, Song Guofang, Xing Jiansheng, Ji Bin, Li Pengzhan, Bao Jie, Cao Lei, Liu Zhenwei, Wei Junyi, Ren Jie, Wang Jincheng, Liu Yingyi

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Abstract

The compact cyclotron CYCIAE-100, developed by the China Institute of Atomic Energy (CIAE), can generate a continuous proton beam with an energy of 100 MeV. To meet the pulsed beam requirements for nuclear data measurements, a beam pulsing system was developed. A chopper was installed in the injection line to convert the continuous beam from the ion source into a pulsed beam with a frequency adjustable from the MHz range to lower frequencies. Two phase selectors were used to limit the beam’s phase width, and a dual extraction method was employed to reduce beam overlaps in the extraction region, thus achieving quasi-single-turn extraction. The design and fabrication of the chopper and phase selectors were completed, and experimental tests were conducted. The experimental results demonstrated that the pulse width was successfully compressed to less than 5 ns, ensuring sufficiently high energy resolution and providing the conditions for nuclear data measurement experiments.

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100兆电子伏质子回旋加速器的束脉冲研究

由中国原子能科学研究院（CIAE）研制的紧凑回旋加速器CYCIAE-100可以产生能量为100兆电子伏特的连续质子束。为满足核数据测量对脉冲光束的要求，研制了一种脉冲光束测量系统。在注入管线中安装了斩波器，将来自离子源的连续光束转换为频率从MHz范围到更低频率可调的脉冲光束。采用两个相位选择器限制光束的相位宽度，采用双重提取方法减少光束在提取区域的重叠，从而实现准单匝提取。完成了斩波器和选相器的设计与制作，并进行了实验测试。实验结果表明，脉冲宽度被成功压缩到小于5 ns，保证了足够高的能量分辨率，为核数据测量实验提供了条件。

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 Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.