Research PaperNo Access

Simulation verification of longitudinal acceptance measurement for low-energy superconducting linacs

Tingyue Li

https://orcid.org/0009-0006-2001-8752

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

E-mail Address: litingyue@impcas.ac.cn

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Shuhui Liu

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

E-mail Address: liush@impcas.ac.cn

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Zhijun Wang

https://orcid.org/0000-0002-6899-6575

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

E-mail Address: wangzj@impcas.ac.cn

Corresponding author.

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Zhongyi Li

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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Chao Jin

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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Yu Du

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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Man Yi

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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Tielong Wang

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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, and

Yimeng Chu

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China

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https://doi.org/10.1142/S0217751X24501033Cited by:0 (Source: Crossref)

Abstract

Controlling longitudinal beam loss is crucial for ensuring the stable operation of superconducting linacs. Measuring and optimizing longitudinal acceptance are effective methods to reduce longitudinal beam loss. The SNS has reported research results on measuring longitudinal acceptance in a high-energy accelerator. Compared to high-energy accelerators, low-energy accelerators exhibit stronger space charge effects and nonlinearities, larger beam sizes, and more significant impacts from errors. Therefore, the measurement and optimization of longitudinal acceptance are more essential for beam loss control in low-energy superconducting linacs. This paper systematically investigates the measurement of longitudinal acceptance in low-energy superconducting linacs and validates the longitudinal acceptance measurement based on phase and energy acceptance scans through numerical simulation on the CAFe superconducting linac. Additionally, the impact of errors under actual operating conditions on the longitudinal acceptance is comprehensively analyzed. The research results indicate that conducting experiments to measure the longitudinal acceptance of a low-energy superconducting linac is highly feasible.

Keywords:

PACS: 29.17.+w, 29.27.−a, 41.75.−I

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