2014•Unpublished venueOpen access
Recent Progress of the SSC-LINAC RFQ
Ge Liu, Jiaer Chen, Heng Du, Shu Liang Gao, Yuan He, Jiang, Peiyong, Xiaoni Li, Zhongshan Li, Yuanrong Lu, Zhi Wang, Junxia Wu, Jia-Wen Xia, Xueqing Yan, Yaqing Yang, Xuejun Yin, Youjin Yuan, Xiaohu Zhang, Hongwei Zhao, Kun Yan Zhu
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Abstract
The project of SSC-LINAC RFQ has important progresses in the past year. The machine has been moved to the Institute of Modern Physics in the first season of 2013. The cavity measurement including tests of RF performance and field distribution is carried out again in the laboratory. The Q0 is 6440, and the unflatness of the electric field in longitudinal is ±2.5%. The results demonstrated a good agreement with simulation. The RF and beam commissioning of the RFQ has been carried out in the first half of 2014. The duty factor rose from 5% to CW gradually. By now, the cavity has been operated with 35 kW on CW mode. The measurement of the bremsstrahlung spectrum reveals that the 35 kW power is needed to generate the 70 kV inter-vane voltage. The beam transmission efficiency and energy spread has been obtained in beam commissioning by accelerating 16O⁵⁺ and 40Ar⁸⁺ beams. The efficiency of 40Ar⁸⁺ is as high as 94%, and the output energy is 142.78 keV/u. All the processes and results of the experiments will be discussed in details.