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 ›› 2019, Vol. 30 ›› Issue (4): 53 doi: 10.1007/s41365-019-0576-4

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS •     Next Articles

Performance of an electron linear accelerator for the first photoneutron source in China

Xuan Li1,2,3 • Jun-Qiang Zhang1,2 • Guo-Qiang Lin1,2 • Wen-Cheng Fang1,2 • Qiang Gu1,2 • Meng Zhang1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, Shanghai 201204, China
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-08-30 Revised:2018-10-25 Accepted:2018-10-31
  • Contact: Meng Zhang E-mail:zhangmeng@sinap.ac.cn
  • Supported by:
    This work was supported by the Youth Innovation Promotion Association CAS (No. 2018300).
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Xuan Li, Jun-Qiang Zhang, Guo-Qiang Lin, Wen-Cheng Fang, Qiang Gu, Meng Zhang. Performance of an electron linear accelerator for the first photoneutron source in China.Nuclear Science and Techniques, 2019, 30(4): 53     doi: 10.1007/s41365-019-0576-4
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Abstract: A compact 15.0-MeV, 1.5-kW electron linear accelerator (LINAC) was successfully constructed to provide an electron beam for the first photoneutron source at the Shanghai Institute of Applied Physics, Shanghai, China. This LINAC consists of five main parts: a thermal cathode grid-controlled electron gun, a pre-buncher, a variable-phase-velocity buncher, a light-speed accelerating structure, and a high-power transportation beamline. A digital feedforward radio frequency compensator is adopted to reduce the energy spread caused by the transient beam loading effect. Furthermore, a real-time electron gun emission feedback algorithm is used to keep the beam stable. After months of efforts, all the beam parameters successfully met the requirements of the facility. In this paper, the beam commissioning process and performance of the LINAC are presented.

Key words: Electron linear accelerator, High-power transportation beamline, Digital feedforward radio frequency compensation, Real-time electron gun emission feedback algorithm, Transmission efficiency