Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity |
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Authors: | 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 |
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Affiliation: | 1,3 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 Shanghai Key Laboratory of Cryogenics & Superconducting RF Technology, Shanghai 201800, China |
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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, TE 111 and TM 110 , and the first higher monopole mode, TM 011 . The external quality factor of the coaxial fundamental power coupler is optimized to 1.2 × 10 5 , which will be useful when it is applied in the light source storage ring. |
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Keywords: | 500 MHz superconducting cavity higher order modes input coupler simulation |
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