Beam dynamics optimization design of Rhodotron electron accelerator based on genetic algorithm and sensitivity analysis

Yulun Li; Quantang Zhao; Zhongping Li; Xiaoxiao Yuan; Yang Zong; Jia Li; Shuchun Cao; Yuanming Long; Zimin Zhang

doi:10.1016/j.apradiso.2023.111024

Beam dynamics optimization design of Rhodotron electron accelerator based on genetic algorithm and sensitivity analysis

Appl Radiat Isot. 2023 Nov:201:111024. doi: 10.1016/j.apradiso.2023.111024. Epub 2023 Sep 7.

Authors

Yulun Li¹, Quantang Zhao², Zhongping Li¹, Xiaoxiao Yuan³, Yang Zong³, Jia Li¹, Shuchun Cao¹, Yuanming Long³, Zimin Zhang⁴

Affiliations

¹ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; College of Nuclear Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
² Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; College of Nuclear Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address: zhaoquantang@impcas.ac.cn.
³ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
⁴ Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; College of Nuclear Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address: zzm@impcas.ac.cn.

PMID: 37725889
DOI: 10.1016/j.apradiso.2023.111024

Abstract

The beam dynamics optimization study of Rhodotron electron accelerator for irradiation sterilization is introduced in this paper. The Rhodotron accelerator acceleration principle and the RF field distribution in the coaxial resonant cavity are described in detail. Beam dynamics in the Rhodotron accelerator are analyzed from both transverse and longitudinal directions. Beam dynamics of two kinds of Rhodotron electron accelerators with maximum beam energy of 10 MeV and 40 MeV were optimized based on multi-objective genetic algorithm. The key parameters of Rhodotron accelerators are determined, and the influence of some parameters on the overall acceleration effect is quantitatively analyzed. This paper provides some references for the research, manufacture, installation, and commissioning of this type of accelerator.

Keywords: Beam dynamics; Genetic algorithm; Rhodotron electron accelerator; Sensitivity analysis.