تقرير
Design of a HOM-Damped 166.6 MHz Compact Quarter-Wave beta=1 Superconducting Cavity for High Energy Photon Source
| العنوان: | Design of a HOM-Damped 166.6 MHz Compact Quarter-Wave beta=1 Superconducting Cavity for High Energy Photon Source |
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| المؤلفون: | Zhang, Xinying, Dai, Jin, Guo, Lin, Huang, Tongming, Li, Zhongquan, Ma, Qiang, Meng, Fanbo, Mi, Zhenghui, Zhang, Pei, Zheng, Hongjuan |
| سنة النشر: | 2021 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Accelerator Physics |
| الوصف: | Superconducting cavities with low RF frequencies and heavy damping of higher order modes (HOM) are desired for the main accelerator of High Energy Photon Source (HEPS), a 6 GeV synchrotron light source promising ultralow emittance currently under construction in Beijing. A compact 166.6 MHz superconducting cavity was proposed adopting a quarter-wave beta=1 geometry. Based on the successful development of a proof-of-principle cavity, a HOM-damped 166.6 MHz compact superconducting cavity was subsequently designed. A ferrite damper was installed on the beam pipe to reduce HOM impedance below the stringent threshold of coupled-bunch instabilities. Being compact, RF field heating on the cavity vacuum seal was carefully examined against quenching the NbTi flange. The cavity was later dressed with a helium vessel and the tuning mechanism was also realized. Excellent RF and mechanical properties were eventually achieved. Finally, the two-cavity string was designed to ensure smooth transitions among components and proper shielding of synchrotron light. This paper presents a complete design of a fully dressed HOM-damped low-frequency beta=1 superconducting cavity for HEPS. Comment: Presented at the 2021 International Conference on Radio Frequency Superconducting Conference (SRF 2021), Jun 28th - Jul 2nd, 2021 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2109.06560 |
| رقم الأكسشن: | edsarx.2109.06560 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |