|WETEB8||The Fundamental Power Coupler for CEPC Booster Cavity||789|
Funding: Supported by National natural Science Foundation of China ( 11475203)
96 Tesla type 1.3GHz 9-cell superconducting cavities, housed in eight 12m-long cryomodules, will be adopted for CEPC booster. Each cavity equips with one variable coupling, double-window fundamental power coupler (FPC). The FPC will operate at RF power up to 20 kW at quasi-CW mode. A variable coupling from 4·106 to 107 is required to meet different operation modes of Higgs, W and Z. A new coupler that employs a 50 Ω coaxial line with bellow structures, a cylindrical warm window, a coaxial planar cold window and a coupling adjusting actuator has been designed. Then two prototypes have been fabricated and high power tested up to CW 70 kW successfully. In this paper, the design, fabrication and high power test of the prototype FPCs will be presented.
|Slides WETEB8 [9.971 MB]|
|DOI •||reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2019-WETEB8|
|About •||paper received ※ 23 June 2019 paper accepted ※ 30 June 2019 issue date ※ 14 August 2019|
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