强激光与粒子束2012，Vol.24Issue(9)：2193-2197,5.DOI:10.3788/HPLPB20122409.2193
正电子发射成像回旋加速器磁铁设计与测试
Magnet design and test of positron emission tomography cyclotron
魏涛 1杨国君 1何小中 1庞健 1赵良超 1张开志1
作者信息
- 1. 中国工程物理研究院流体物理研究所,四川绵阳621900
- 折叠
摘要
Abstract
An 11 MeV H- compact cyclotron used for medical radioactive isotope production is under construction in Institute of Fluid Physics, CAEP. The cyclotron magnet adopts the design of small valley gaps and coulee structure which can provide high average magnetic field and strong focus ability. To achieve 5×10-4 measuring accuracy, a magnetic field mapping system has been developed. After iterative correction using field measurement data, the total phase excursion of the cyclotron is within 19° and the first harmonic is less than 10-3 T, which are all acceptable. Furthermore, the beam testing declares the successful construction of the cyclotron magnet. Besides, some magnetic field influence factors were discussed, including the magnetic field distortion and measurement error.关键词
磁铁/磁场/等时性/聚焦/一次谐波Key words
magnet/ magnetic field/ isochronism/ focus/ first harmonic分类
信息技术与安全科学引用本文复制引用
魏涛,杨国君,何小中,庞健,赵良超,张开志..正电子发射成像回旋加速器磁铁设计与测试[J].强激光与粒子束,2012,24(9):2193-2197,5.
