Speaker
Yelong Wei
(University of Science and Technology of China)
Description
A 3rd harmonic superconducting (SC) cavity is being developed for lengthening bunch and improving beam lifetime in the Hefei Advanced Light Facility (HALF) storage ring. This SC cavity is excited by an electron beam with 350 mA current, 1 nC charge, and ~6.7 ps length and requires strong damping of higher-order-modes (HOMs) in order to meet beam instability requirements. This paper presents design and vertical test of this passive 3rd harmonic SC cavity in detail. The vertical
test results indicate that the cavity accelerating voltage reaches as high as 1.2 MV with the quality factor better than 3E8 and there is no multipacting or field emission.
Funding Agency
This work is supported by Hefei Advanced Light Facility.
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Author
Yelong Wei
(University of Science and Technology of China)
Co-authors
Feisi He
(Institute of High Energy Physics)
Fengxia Xu
(University of Science and Technology of China)
Guangyao Feng
(University of Science and Technology of China)
Kai Zhang
(University of Science and Technology of China)
Weimin Pan
(Chinese Academy of Sciences)
Zheng Mi
(Chinese Academy of Sciences)
Zhicheng Huang
(University of Science and Technology of China)