Higher-order mode analysis for SOLEIL-type superconducting cavity
SOLEIL型超导腔的高次模分析研究作者机构：National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China
出 版 物：《中国科学技术大学学报》 (Journal of University of Science and Technology of China)
年 卷 期：2024年第54卷第7期
页 面：0706-1-0706-11页
核心收录：
学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术]
基 金：supported by the Fundamental Research Funds for the Central Universities(WK2310000098)
主 题：高次模耦合器 超导腔 高频系统 二次电子倍增 热仿真
摘 要：A 499.8 MHz SOLEIL-type superconducting cavity was simulated and designed for the first time in this paper. The higher-order mode (HOM) properties of the cavity were investigated. Two kinds of coaxial HOM couplers were designed. Using 4 L-type and 4 T-type HOM couplers, the longitudinal impedance was suppressed to 3 kΩ, and the transverse impedance below 30 kΩ/m. The HOM damping requirements of Hefei Advanced Light Facility (HALF) were satisfied. This paper conducts an in-depth study on the radio frequency (RF) design, multipacting optimization, and thermal analysis of these coaxial couplers. Simulation results indicated that under operating acceleration voltage, the optimized couplers does not exhibit multiplicating or thermal breakdown phenomena. The cavity has the potential to reach a higher acceleration gradient.
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