周期性聚焦结构中强流束的共振与束晕形成  

Resonances and Halo Formation of Space Charge Dominated Beams in Periodic Focusing Channels

作　　者：陈银宝[1] 黄志斌[1] 

机构地区：[1]中国原子能科学研究院,北京275信箱17分箱102413

出　　处：《核科学与工程》2000年第1期70-77,共8页Nuclear Science and Engineering

基　　金：国家自然科学基金;核工业基金! (19775 0 6 9;H7196D0 12 1)

摘　　要：强流束中的束晕形成是研制下一代高功率加速器必须解决的关键问题之一。为此研究了周期性聚焦结构中强流束的非线性共振、参数共振与束晕形成的关系 ,给出强流束中非线性共振、参数共振的共振范围表达式及其随束流空间电荷效应变化的数值结果和图表曲线 ,提出由非线性共振而激发的束晕形成的空间电荷效应极限 ,为下一代高功率加速器的物理设计提供理论依据。The relationship between the nonlinear resonance and halo formation induced by space charge has been studied by means of the particle core model. Using the Poincare surface of section technique, an analysis of a particle motion in the phase plane has been presented. The range of the nonlinear resonance versus space charge effects, and the space charge thresholds of halo formation excited by nonlinear resonance are derived. Some numerical results are also given.

关 键 词：周期性聚焦结构 强流束 束晕形成 加速器 

分 类 号：TL501[核科学技术—核技术及应用]