Study on Magnets for Beam Transport System of SC200 Superconducting Proton Therapy Facility
Study on Magnets for Beam Transport System of SC200 Superconducting Proton Therapy Facility
复制标题
SC200超导质子治疗装置束流传输系统磁体研究
DOI：
10.1109/tasc.2018.2889253
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发表时间：
2019
影响因子：
1.8
通讯作者：
Junsheng Zhang
中科院分区：
文献类型：
--
作者：
Jinxing Zheng;Haiyang Liu;Yuntao Song;Junsheng Zhang
SC200质子治疗设备由超导回旋加速器、机架治疗室和固定束流室组成。质子束主要通过束流传输装置进行传输，如偶极磁铁、四极磁铁和校正磁铁，它们位于束流传输线上，束流传输线的布局是基于束流光学设计的。一系列的偶极、四极和校正磁体最终使质子束的高质量传输成为可能。双极磁铁主要用于束流偏转，四极磁铁用于束流聚焦，校正磁铁用于束流轨道校正。本文介绍了束流传输线的磁铁设计。此外，本文还介绍了磁体的主要参数和磁分析工作。用霍尔测绘系统和旋转线圈测量系统测量了偶极和四极磁体的磁场。结果表明，测量结果比仿真结果稍差。但两种方法均能满足设计要求，基本趋势相似。
The SC200 proton therapy facility is consisting of a superconducting cyclotron, a gantry treatment room and a fixed beam room. The proton beams are transported mainly with beam transport devices, such as dipole magnets, quadrupole magnets, and corrector magnets which lie on the beam transport line layout of which is based on the beam optics design. A series of dipole, quadrupole, and corrector magnets ultimately make high-quality transmission of proton beams possible. Dipole magnets are mainly for beams deflection, quadrupole magnets are for beam focusing, and corrector magnets for orbit correction of beams. This paper shows the design of such magnets for the beam transport line. Besides, main parameters of magnets are presented and magnetic analysis work is also illustrated in this paper. The magnetic fields of dipole and quadrupole magnets are measured by hall mapping system and rotary coil measuring system. The results show that the measuring results are a little worse than the simulation results. However, both methods can meet the design requirement and the basic trend is similar to each other.