Speaker
Dr
MengXu Fan
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Description
The China Spallation Neutron Source upgrade project (CSNS-Ⅱ) uses 24 elliptical cavities in the LINAC section. Each cavity is equipped with a coaxial fundamental power coupler (FPC) featuring a characteristic impedance of 50 Ω and a fixed coupling antenna. The coupler must withstand a minimum peak power of 600 kW with 5% duty factor and an equivalent average power of at least 40 kW. This paper details the multiphysics design, which encompasses electromagnetic optimization, multipacting analysis, and thermal-stress simulations. Additionally, the high-power conditioning results for the first batch of power couplers are presented.
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Author
Dr
MengXu Fan
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Co-authors
Huachang Liu
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Xiaolei Wu
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Ahong Li
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Wenzhong Zhou
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Cong Zhang
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Peihua Qu
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Qiang Chen
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Bo Li
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)
Feisi He
(Institute of High Energy Physics, Chinese Academy of Sciences)
Miaofu Xu
(Institute of High Energy Physics, Chinese Academy of Sciences)
Rui Ge
(Institute of High Energy Physics, Chinese Academy of Sciences)
Sheng Wang
(Spallation Neutron Source Science Center, Institute of High Energy Physics, Chinese Academy of Sciences)