Abstract
This paper reports on the design, fabrication, RF measurement, and high-power test of a prototype accelerator—such as 11.424 GHz with 12 cells—and a traveling wave of two halves. It was found that the unloaded gradient reached 103 MV/m during the high-power test and the measured breakdown rate, after \(3.17\times 10^7\) pulses, was \(1.62\times 10^{-4}\)/pulse/m at 94 MV/m and a 90 ns pulse length. We thus concluded that the high-gradient two-half linear accelerator is cost-effective, especially in high-frequency RF linear acceleration. Finally, we suggest that silver-based alloy brazing can further reduce costs.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Mao-Mao Peng, Jia-Ru Shi, Hao Zha, Xian-Cai Lin, Ze-Ning Liu, Yu-Liang Jiang, Jian Gao, Liu-Yuan Zhou, Fo-Cheng Liu, Xiang-Cong Meng, and Huai-Bi Chen. The first draft of the manuscript was written by Mao-Mao Peng, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work was supported by the National Natural Science Foundation of China (No. 11922504).
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Peng, MM., Shi, JR., Zha, H. et al. Development and high-gradient test of a two-half accelerator structure. NUCL SCI TECH 32, 60 (2021). https://doi.org/10.1007/s41365-021-00895-x
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DOI: https://doi.org/10.1007/s41365-021-00895-x