Fabrication and cold test of prototype of spatially periodic radio frequency quadrupole focusing linac

Fabrication and cold test of prototype of spatially periodic radio frequency quadrupole focusing linac
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空间周期射频四极聚焦直线加速器样机制作及冷态试验

DOI:
10.1007/s41365-020-00835-1
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发表时间:
2021-01
期刊:
NUCL SCI TECH
影响因子:
--
通讯作者:
Hu-Shan Xu
Hu-Shan Xu
中科院分区:
其他
文献类型:
--
作者:
Pei-Yan Yu;Bin Zhang;Feng-Feng Wang;Chen-Xing Li;Guo-Zhen Sun;Zhi-Jun Wang;Lu-Bei Liu;Chen-Zhang Yuan;Yuan He;Hu-Shan Xu

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中国科学院近代物理研究所研制了一台频率为325 MHz的空间周期RF四极聚焦直线加速器原型,有望成为强流直线加速器的前端。它由一系列交替的交叉H型漂移管和RF四极部分组成。由于其特殊的几何形状,腔体的加工是其工程开发和应用的主要障碍。在本文中,我们报告了详细的机械设计,这种结构,并描述了其制造过程,包括加工,装配和检查。场分布的测量通过珠拉技术。结果表明,加速场和聚焦场的场误差都在可接受的范围内。提出并验证了这种新结构的调谐方案。详细介绍了冷态试验过程和结果。该样机的研制为空间周期性射频四极结构的应用提供了有价值的指导。
A 325 MHz aluminum prototype of a spatially periodic RF quadrupole focusing linac was developed at the Institute of Modern Physics, Chinese Academy of Sciences, as a promising candidate for the front end of a high-current linac. It consists of an alternating series of crossbar H-type drift tubes and RF quadrupole sections. Owing to its special geometry, cavity fabrication is a major hurdle for its engineering development and application. In this paper, we report the detailed mechanical design of this structure and describe its fabrication process, including machining, assembly, and inspection. The field distribution was measured by the bead-pull technique. The results show that the field errors of both the accelerating and focusing fields are within an acceptable range. A tuning scheme for this new structure is proposed and verified. The cold test process and results are presented in detail. The development of this prototype provides valuable guidance for the application of the spatially periodic RF quadrupole structure.
DOI: --
发表时间: 2017
期刊: --
影响因子: --
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DOI: 10.1063/1.1701980
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