真空电子技术Issue(1)：47-53,7.DOI:10.16540/j.cnki.cn11-2485/tn.2026.01.07
大功率速调管腔体新型加载结构的设计
Design of Novel Loaded Cavity Structures for High-power Klystrons
摘要
Abstract
To address issues in conventional high-power klystron cavity loading structures coated with attenu-ation materials such as FeSiAl,including susceptibility to coating detachment,imprecise tuning of loading effects,and thermal accumulation due to inadequate heat dissipation,two novel resonant cavity loading structures are pro-posed and designed.The first one is a metal ridge and attenuation material interleaved loading structure,which en-hances heat dissipation by concentrically and alternately arranging metal ridges and attenuation materials on the cavity lid.Post-sintering loading adjustment is achieved by tuning the ridge height via turning operations,yielding a Q-factor tuning range of up to 32%and reducing the peak temperature of the attenuation material to 86.27%of that in conventional structures.The second one is an all-metal ridge loading structure,which introduces adjustable-height and variable-number metal ridges between the outer circumference of the cavity lid and the cavity wall.The structure achieves a Q-factor tuning range of up to 64.3%,lowers the peak temperature of the loading structure to 51.44%of the conventional design,fundamentally eliminates the risk of evaporation and detachment of attenuation material coatings,and simplifies the cavity loading process.Electromagnetic and thermal simulations of a 1.3 GHz cylindrical cavity demonstrate that the two new structures effectively reduce the cavity Q-factor to as low as 14.3%and 16.7%of the unloaded cavity,respectively,while exhibiting improved thermal management and flexibly tuna-ble loading performance.The research offers effective technical pathways for enhancing the bandwidth,stability,and reliability of high-power klystrons.关键词
大功率速调管/腔体加载/热仿真Key words
High-power klystron/Cavity loading/Thermal simulation分类
信息技术与安全科学引用本文复制引用
徐世翔,耿志辉,张瑞,张志强,廖云峰..大功率速调管腔体新型加载结构的设计[J].真空电子技术,2026,(1):47-53,7.基金项目
国家自然基金(62271011) （62271011）
工程项目(2009ZYHD0010) （2009ZYHD0010）
国家磁约束聚变发展计划(2018YFE0305100) （2018YFE0305100）
