Radio-frequency design and commissioning of a flexible waveguide for high-vacuum S-band applications
作者机构：Key Laboratory of Particle Acceleration Physics and TechnologyInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China
出 版 物：《Radiation Detection Technology and Methods》 (辐射探测技术与方法（英文）)
年 卷 期：2020年第4卷第2期
页 面：250-254页
学科分类：070207[理学-光学] 07[理学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）]
基 金：Funded by Youth Innovation Promotion Association CAS(2020015)
主 题：S-band Flexible waveguide High vacuum Microwave commissioning
摘 要：Purpose Flexible waveguides,which allow for greater deformation as compared to traditional hard waveguides,are highly useful for simplifying waveguide system ***,the peak powers of these waveguides have been limited to several megawatts in non-vacuum ***,a novel flexible waveguide was developed for the S-band(2856 MHz)with the aim of facilitating the interconnection of two hard *** The flexible waveguide was composed of brass,and its surface was plated with oxygen-free high-conductivity copper for brazing with stainless steel flanges in a vacuum *** connecting the stainless steel flanges together,it can be applied to a high-vacuum *** The prototype exhibited good measurement results in low-power microwave tests;the results of a 72-h vacuum leak test showed satisfactory vacuum performance as well,and no obvious surface collapse was ***-power microwave commissioning was conducted between June and July 2019;the waveguide showed a maximum average power of approximately 2.7 *** Unfortunately,the prototype was damaged after reaching that power level,which indicates the need for further optimization of the fabrication *** our experiment,it is clear that the flexible waveguide cannot be used in large accelerators because of its average power limit.
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