文档介绍：华中科技大学
硕士学位论文
回旋加速器虚拟样机轴向注入系统设计研究
姓名:曹南山
申请学位级别:硕士
专业:电工理论与新技术
指导教师:樊明武
20060429
摘要
回旋加速器广泛应用于国防基础科学研究、同位素生产以及医疗诊断、治疗
等应用领域。本文以 100MeV 强流回旋加速器注入系统的设计为目标,对束流在
注入系统中的传输以及对偏转板的设计方法进行探讨研究。主要分为轴向注入系
统直线输运段的设计,空间电荷效应的探讨以及偏转板的设计这三大部分。
轴向注入系统直线输运段的设计,主要对光路进行匹配,进行整体设计以及
各个元件设计。在计算机上仿真束流传输的过程,观察束流在传输过程中的变化,
并不断对光路设计进行优化,使得束流在传输过程中的粒子损失尽可能小。
对空间电荷效应的探讨主要是针对在注入部分粒子损失比较严重这一问题,
对空间电荷效应对束流的影响进行探讨,从理论上以及仿真结果上分析空间电荷
效应对束流的影响程度,并进一步研究如何减小强流下空间电荷效应所带来的粒
子损失。用 Transport 程序对束流传输过程进行仿真,以此来检验束流损失,并
在此基础上修正注入系统的设计。
偏转板的设计主要在于数值算法的生成以及 c++程序的编译,并针对
100MeV 强流回旋加速器的注入点位置的需要,对偏转板的电压进行优化。
Transport 程序仿真结果表明,修正后的注入系统设计,基本上能达到控制束
流包络的目的,减小了粒子的损失。

关键词:回旋加速器,轴向注入系统,束流,空间电荷效应

I
Abstract
Cyclotrons are widely used in fundamental researches in national defense,
isotopes production, medical diagnosis and therapy. The research theme of this
dissertation is about the axial injection design of 100MeV intense beam H- Cyclotron.
The research includes parts: the design of the beeline of the axial injection design of
100MeV intense Cyclotron, the discussion of the influence of the space charge and
the design of the deflexion.
The design of the beeline of the axial injection design of 100MeV intense
Cyclotron is mostly about the optics matching, the whole design of the beeline and the
design of the element. To observe the movement of the beam, we simulate the
transfers of the beam puter by TRANSPORT emulator, and optimized the
design of beeline to reduce the losing of particle.
The research of the space charge is focused on the influence of the space charge
to the transfers of the beam, mostly including the theory research and the simulation
by TRANSPORT emulator. To reduce the particle losing brought by the influence of
the space charge, we have optimized the design of beam line. The result of the
simulation indicates that the amendatory design of the beam line does positive effect
to the reduce