Development of a ferrite-silicon carbide hybrid high-order mode damper for accelerators

Chen Xin; Li Chen; Zhao Wei; Huang Gang; Xiang Jun; Li Tiantao; Yang Jie; Liu Ping; Qin Zhen

doi:10.11884/HPLPB202537.240154

Volume 37 Issue 2

Feb. 2025

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Chen Xin, Li Chen, Zhao Wei, et al. Development of a ferrite-silicon carbide hybrid high-order mode damper for accelerators[J]. High Power Laser and Particle Beams, 2025, 37: 024001. doi: 10.11884/HPLPB202537.240154

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Chen Xin, Li Chen, Zhao Wei, et al. Development of a ferrite-silicon carbide hybrid high-order mode damper for accelerators[J]. High Power Laser and Particle Beams, 2025, 37: 024001. doi: 10.11884/HPLPB202537.240154

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Development of a ferrite-silicon carbide hybrid high-order mode damper for accelerators

doi: 10.11884/HPLPB202537.240154

Institute of Fluid Physics, CAEP, Mianyang 621900, China

Received Date: 2024-05-11
Accepted Date: 2024-11-27
Rev Recd Date: 2024-11-27

Available Online: 2024-12-07

Publish Date: 2025-02-15

Abstract

Abstract

In large current accelerator beam tubes, high-frequency fields are generated when charged particles circulate within the beam pipe. To mitigate the impact on beam current, it is essential to use high-order mode damper to convert the high field energy into heat, which can then be dissipated by a cooling system. This paper presents the research, fabrication, and key performance characteristics of a hybrid high-order mode damper. The absorbing materials utilized in the damper include ferrite and silicon carbide, which can be welded to metal substrates through metallization and welding techniques. Microwave performance simulations and thermal simulations were conducted using CST and COMSOL software, respectively, leading to an optimized damper structure. Test results demonstrate that the absorption efficiency of the hybrid damper aligns closely with the calculated values in the frequency range below 1.7 GHz. However, the simulated absorption efficiency exceeds the measured results significantly above 1.7 GHz. Additionally, the vacuum leak rates, ultimate vacuum, and water resistance meet the design requirements for superconducting high-frequency cavities.
- high-order-mode,
- damper,
- ferrite,
- silicon carbide,
- welding

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References(15)

References

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