Speaker
Dr
MengXu Fan
(Institute of High Energy Physics, China Spallation Neutron Source)
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 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 conditionning results for the first batch of power couplers are presented.
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Author
Dr
MengXu Fan
(Institute of High Energy Physics, China Spallation Neutron Source)
Co-authors
Huachang Liu
(Institute of High Energy Physics)
Xiaolei Wu
(Institute of High Energy Physics)
Ahong Li
(Institute of High Energy Physics)
Wenzhong Zhou
(Institute of High Energy Physics)
Cong Zhang
(Institute of High Energy Physics)
Peihua Qu
(Institute of High Energy Physics)
Qiang Chen
(Institute of High Energy Physics)
Bo Li
(Institute of High Energy Physics)