Speaker
Yitong Duan
(Tsinghua University)
Description
VHF CW photocathode electron guns suffer from severe multipactor effects that significantly degrade their operational performance. In this work, the RF cavity geometry was optimized via CST simulations to suppress multipactor, employing a three-phase strategy with fixed key structural parameters. Compared with the SHINE gun baseline, the optimized cavity achieves a much lower multipactor growth rate $\alpha$ while preserving excellent high-performance RF characteristics. This demonstrates that geometry optimization is an effective approach to mitigate multipactor in VHF CW photocathode electron guns.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Accepted. |
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Author
Yitong Duan
(Tsinghua University)
Co-authors
Lianmin Zheng
(Tsinghua University)
Ying-Chao Du
(Tsinghua University)