Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity

LU Chang-Wang; LIU Jian-Fei; HOU Hong-Tao; MA Zhen-Yu; MAO Dong-Qing; FENG Zi-Qiang; ZHAO Shen-Jie; LUO Chen; ZHAO Yu-Bin; ZHANG Zhi-Gang; ZHENG Xiang; WEI Ye-Long; YU Hai-Bo; LI Zheng; XU Kai

doi:10.1088/1674-1137/36/5/012

Chinese Physics C> 2012, Vol. 36> Issue(5) : 447-451 DOI: 10.1088/1674-1137/36/5/012

Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity

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Abstract：
This paper illustrates the design and simulation of a unique 500 MHz single-cell superconducting radio frequency cavity with a fluted beam pipe and a coaxial-type fundamental power coupler. The simulation results show that the cavity has a high r/Q value, a low peak surface field and a large beam aperture, so it can be a candidate cavity for high current accelerators. With the help of a fluted beam tube, almost all the higher order modes can propagate out of the cavity, especially the first two dipole modes, TE₁₁₁ and TM₁₁₀, and the first higher monopole mode, TM₀₁₁. The external quality factor of the coaxial fundamental power coupler is optimized to 1.2×10⁵, which will be useful when it is applied in the light source storage ring.

References

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LU Chang-Wang, LIU Jian-Fei, HOU Hong-Tao, MA Zhen-Yu, MAO Dong-Qing, FENG Zi-Qiang, ZHAO Shen-Jie, LUO Chen, ZHAO Yu-Bin, ZHANG Zhi-Gang, ZHENG Xiang, WEI Ye-Long, YU Hai-Bo, LI Zheng and XU Kai. Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity[J]. Chinese Physics C, 2012, 36(5): 447-451. doi: 10.1088/1674-1137/36/5/012

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Received: 2011-08-19
Revised: 2011-08-30

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity

Received Date: 2011-08-19

Accepted Date: 2011-08-30

Available Online: 2012-05-05

Abstract: This paper illustrates the design and simulation of a unique 500 MHz single-cell superconducting radio frequency cavity with a fluted beam pipe and a coaxial-type fundamental power coupler. The simulation results show that the cavity has a high r/Q value, a low peak surface field and a large beam aperture, so it can be a candidate cavity for high current accelerators. With the help of a fluted beam tube, almost all the higher order modes can propagate out of the cavity, especially the first two dipole modes, TE₁₁₁ and TM₁₁₀, and the first higher monopole mode, TM₀₁₁. The external quality factor of the coaxial fundamental power coupler is optimized to 1.2×10⁵, which will be useful when it is applied in the light source storage ring.

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Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity

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