缪子对撞机直线冷却通道中的RF腔设计与束流负载效应
RF cavity design and beam loading effects in the rectilinear cooling channel for a muon collider
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中文总结 AI 辅助
本文针对缪子对撞机直线冷却通道的束流负载问题，开展带束窗铜腔的RF设计与效应分析，提出考虑束流横向分布的新型数值补偿方法，为实现高亮度缪子对撞机提供关键技术支撑。
中文摘要 AI 辅助
高梯度常温RF腔是缪子对撞机直线冷却通道的关键部件，提供维持快速六维电离冷却所需的加速场，而该冷却对实现高亮度至关重要。为达成此目标，缪子对撞机每束团需要约10^12个缪子。在如此高的束流强度下，由束团驱动的尾场引发的束流负载会显著降低腔的加速梯度并损害束流稳定性。本文聚焦于满足缪子直线冷却通道束流动力学要求的、带有束窗的铜腔的RF概念设计及束流诱导效应分析。我们首先开展腔的设计与优化，评估其RF性能及功率需求；随后分析腔的尾场与束流负载效应，提出一种考虑束流横向分布的新型数值补偿方法。
英文摘要
High-gradient normal-conducting RF cavities are crucial components of the rectilinear cooling channel in a muon collider, providing the accelerating field necessary to sustain the rapid six-dimensional ionization cooling essential to achieve high luminosity. To reach this goal, a muon collider requires approximately $10^{12}$ muons per bunch. At such high beam intensities, beam loading induced by bunch-driven wakefields can significantly reduce the cavity accelerating gradient and compromise beam stability. This paper focuses on the conceptual RF design and beam-induced effect analysis of copper cavities with so-called beam windows developed to meet the beam dynamics requirements of the rectilinear muon cooling channel. We first present the design and optimization of the cavities, evaluating their RF performance and power requirements. Thereafter, we analyze cavity wakefields and beam loading effects, proposing a new numerical method for their compensation, which takes the transverse distribution of the beam into account.
