Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (12): 180 doi: 10.1007/s41365-018-0514-x


Fast-bunching design of compact heavy ion RFQ linac

Ke-Dong Wang 1,2,3 • You-Jin Yuan 1 • Xue-Jun Yin 1,3 • Jian-Cheng Yang 1 • Heng Du 1,3 • Zhong-Shan Li 1,3 • Xiao-Ni Li 1,3 • He Zhao 1,2,3 • Zi-Qiang Dong 1,2,3 • Jie Liu 1,2,3 • Jia-Wen Xia 1,3   

  1. 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
    3 Huizhou Research Center of Ion Science, Huizhou 516003, China
  • Contact: Xue-Jun Yin
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (No. 11375243) and the Guangdong Innovative and Entrepreneurial Research Team Program (No. 2016ZT06G373).

PDF ShareIt Export Citation
Ke-Dong Wang, You-Jin Yuan, Xue-Jun Yin, Jian-Cheng Yang, Heng Du, Zhong-Shan Li, Xiao-Ni Li, He Zhao, Zi-Qiang Dong, Jie Liu, Jia-Wen Xia. Fast-bunching design of compact heavy ion RFQ linac.Nuclear Science and Techniques, 2018, 29(12): 180     doi: 10.1007/s41365-018-0514-x


We propose the construction of a compact linac as the injector of a cancer therapy facility at the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS). Based on a traditional setup, a new compact fast-bunching design is first introduced to optimize the 600 keV/u RFQ with a 0.05 pmA 12C4þ beam. This shortens the RFQ structure length from the standard design value of 272–230 cm while effectively regulating the particle loss and emittance growth. In addition, a detailed error analysis was performed after the optimization process. The error sources cover input beam parameters errors, machining errors and alignment errors. The simulation results show that the beam loss and emittance growth of the RFQ are acceptable and within typical ranges of error.

Key words: Linac, RFQ, Beam dynamics design, Fastbunching