2019•JACOWOpen access
Multi-physics Analysis of a CW Four-rod RFQ
Zhongshan Li, Cong Yan, Heng Du, Yuan He, Long Jing, Qi Yu Kong, Xiaoni Li, Yuanrong Lu, Jun Hu Meng, Guodong Shen, Haoning Wang, Ke Dong Wang, Zhijun Wang, Yuan Wei, Junxia Wu, Jia-Wen Xia, Xie, Hong, Wen Jun Xie, Xiaowei Xu, Xu, Zhe, Jiancheng Yang, Yaqing Yang, Xuejun Yin, Youjin Yuan, Yong Zhang, Kun Yan Zhu
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Abstract
The new injector SSC-LINAC is under design and con-struction to improve the efficiency and intensity of beams for the Separated-Sector Cyclotron (SSC). This will be accomplished with a normal conducting radio-frequency quadrupole (RFQ) accelerator. To match with the SSC, the RFQ must be operated on Continuous Wave (CW) mode with a frequency of 53.667 MHz. A four-rod structure was adopted for small dimensions of the cavity. While, it was a huge challenge on CW mode. A multi-physics theoretical analysis, including RF, thermal, struc-tural and frequency shift coupling analysis, have been completed in response to the security and stable opera-tion of the RFQ. The experimental measurement of fre-quency shift was also completed, which is consistent with the simulation. In this paper, the results of theoretical analysis and experiment are reported in detail.