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

作　　者：Chun-Hui Miao Ming Liu Chong-Xian Yin Zhen-Tang Zhao 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2017年第12期193-197,共5页核技术（英文）

基　　金：supported by the Youth Innovation Promotion Association CAS(No.2016238)

摘　　要：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.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.

关 键 词：PROTON therapy SCANNING MAGNET HYSTERESIS FEEDFORWARD control 

分 类 号：R197.39[医药卫生—卫生事业管理]