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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。
Beam formation in intense beams is one of the key issues that must be addressed in developing the next generation of high power accelerators. For this reason, the relationship between nonlinear resonance, parametric resonance and beam halo formation of strong beam in periodic focusing structure is studied. The expression of resonance range of nonlinear resonance and parametric resonance in strong beam and its relation with spatial charge The numerical results of the change of the effect and the graph of the curve suggest the limit of the space charge effect caused by the non-linear resonance induced by the halo formation, which provides a theoretical basis for the physical design of the next generation high power accelerator.