强激光与粒子束2025，Vol.37Issue(4)：100-105,6.DOI:10.11884/HPLPB202537.240278
高能同步辐射光源用铁氧体高次模阻尼器的研制
Development of ferrite high-order mode damper for High Energy Photon Source
摘要
Abstract
In high-current accelerator beam tubes,the flow of charged particles induces a high-frequency field within the tube,which affects the current and stability of the beam.Additionally,this field leads to extra heat loss during the operation of the superconducting cavity,impacting its operational stability.Therefore,it is necessary to effectively control the high-order mode.This study employs ferrite as an absorbing material to absorb high-order modes.The ferrites were welded to copper substrates through metallization and brazing,and then they were joined with the copper beam tube and cooling system to create a ferrite high-order mode damper.The microwave performance of the ferrite high-order mode damper at various frequencies was simulated using CST software,and compared with the measured results.It is found that the high-order mode can be effectively suppressed in the test frequency band,but there are some differences between the two results in a certain frequency band.Additionally,COMSOL software was utilized to simulate the temperature distribution of the ferrite high-order mode damper during operation,and these simulations were compared with experimental data.The test results for loaded power show that the absorption efficiency reaches 77.4%when the absorbed power is 10.14 kW.Furthermore,results of vacuum leak rates,ultimate vacuum and water-resistant all conform to the design requirements for superconducting high-frequency cavities.关键词
高次模/阻尼器/铁氧体/焊接/吸收效率Key words
high-order mode/damper/ferrite/welding/absorption efficiency分类
能源科技引用本文复制引用
陈欣,李晨,赵伟,向军,李天涛,黄刚,杨洁,刘平,秦臻..高能同步辐射光源用铁氧体高次模阻尼器的研制[J].强激光与粒子束,2025,37(4):100-105,6.基金项目
国家自然科学基金项目(12205280) （12205280）
