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 ›› 2017, Vol. 28 ›› Issue (12): 172 doi: 10.1007/s41365-017-0324-6

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS • Previous Articles     Next Articles

Precise magnetic field control of the scanning magnets for the APTRON beam delivery system

Chun-Hui Miao 1,2 Ming Liu 1  Chong-Xian Yin 1  Zhen-Tang Zhao 1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Zhen-Tang Zhao E-mail:zhaozhentang@sinap.ac.cn
  • Supported by:

    This work was supported by the Youth Innovation Promotion Association CAS (No. 2016238).

Chun-Hui Miao, Ming Liu, Chong-Xian Yin, Zhen-Tang Zhao. Precise magnetic field control of the scanning magnets for the APTRON beam delivery system.Nuclear Science and Techniques, 2017, 28(12): 172     doi: 10.1007/s41365-017-0324-6

Abstract:

A design for precise scanning magnetic field control for the beam delivery system of the Shanghai Advanced Proton Therapy Facility (APTRON) is presented in this paper. With a novel feedforward algorithm to compensate for magnet hysteresis, the scanning magnetic field can be controlled to within a precision of ± 2.5 G. The main advantage of the proposed feedforward algorithm is that the average settling time is shorter compared with that of a conventional feedback algorithm with acceptable tolerance.

Key words: Proton therapy, Scanning magnet, Hysteresis, Feedforward control