紧凑型回旋加速器主磁铁设计-电机与电器专业论文.docxVIP

I I 摘 要 紧凑型回旋加速器由于具有体积小、经济的特点，不仅是核物理、原子物理和固 态物理等基础研究的重要工具，而且在同位素生产、PET 诊断、质子治疗和工业辐照 等应用领域获得了广泛的使用。 主磁铁是紧凑型回旋加速器中两个最重要的部件之一，由它产生的磁场必须满足 粒子加速的等时性和横向聚焦。另外，主磁铁必须与回旋加速器的其他子系统相互配 合，实现回旋加速器整机性能的优化。 本文以紧凑型回旋加速器虚拟样机主磁铁的设计主线，介绍了回旋加速器主磁铁 的初步设计，基于 ANSYS 的回旋加速器主磁铁磁场数值计算方法，以及回旋加速器 主磁铁的优化设计。 本文通过对中国原子能科学研究院串列升级工程主体 100MeV 紧凑型强流质子回 旋加速器（CYCIAE100）主磁铁的三维磁场计算和束流动力学分析，验证了主磁铁设 计的合理性；以 CYCIAE100 中心区试验台架 10MeV 紧凑型回旋加速器的主磁铁为原 型，通过镶条的垫补得到了等时场。 关键词：紧凑型回旋加速器 磁铁设计，ANSYS II II Abstract As an economical and flexible tool, the compact cyclotron is not only widely used in fundamental science such as nuclear and solid-state physics research, but also widely employed in PET system, proton therapy, isotopes production. The main magnet is one of the most important components in compact cyclotrons. The magnetic filed must satisfy the isochronous condition and transversal focusing during the acceleration of beam particles. Besides, the main magnet should cooperate with other components for the global optimization. The thesis introduces the preliminary design method of the main magnet, presents the numerical calculation method based on ANSYS software. The optimization process of the main magnet is also studied. By employing the three dimensional simulation and beam dynamics analysis on the main magnet of CYCIAE100, the design proposal is validated. Also, this thesis introduces the magnet shimming process on the 10 MeV compact cyclotron in CIAE. Keywords: Compact Cyclotron Magnet Design ANSYS PAGE PAGE IV 目 录 HYPERLINK \l _bookmark0 摘要 I HYPERLINK \l _bookmark1 ABSTRACTII HYPERLINK \l _bookmark2 1 绪论 HYPERLINK \l _bookmark3 1.1 研究背景(1) HYPERLINK \l _bookmark4 1.2 回旋加速器主磁铁设计方面的进展(3) HYPERLINK \l _bookmark5 1.3 主要内容和章节安排(4) HYPERLINK \l _bookmark6 2 回旋加速器束流动力学理论基础 HYPERLINK \l _bookmark7 2.1 平衡轨道的概念(5) HYPERLINK \l _bookmark8 2.2 平衡轨道的计算(6) HYPERLINK \l _bookmark9 2.3 滑相和等时性场的计算(8) HYPERLINK \l _bookmark10 2.4 横向自由振荡频率的计算(10) HYPERLINK \l _bookmark11 2.5 CYCCAE2000 介绍 (11) HYPERLINK \l _bo