Speaker
Yitong Duan
(Tsinghua University)
Description
Multipactor in very-high-frequency (VHF) continuous-wave (CW) electron guns threatens stability, with non-resonant behavior and secondary electron yield (SEY) as key factors. This study clarifies non-resonant multipactor arises from weak local electric fields and disrupted electron-field resonance. It compares SEY models and adjusts the Furman model to match practical conditions. Combined with the optimized cavity, the adjusted SEY model reduced $\alpha$ to near-zero, eliminating multipactor. Particle analysis also showed multipactor concentrates on the anode side. This work provides a comprehensive solution for VHF gun multipactor risks.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Accepted by Submitter. |
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Author
Yitong Duan
(Tsinghua University)
Co-authors
Lianmin Zheng
(Tsinghua University)
Ying-Chao Du
(Tsinghua University)