标题： 加速器磁铁中的涡流 显示英文标题

标题： Eddy currents in accelerator magnets

摘要： 本文涵盖了加速器磁铁中的主要涡流效应——场修改（时间延迟和场质量）和电阻功率损耗。 在第一部分中，从麦克斯韦方程出发，给出了对这些过程的基本理解，并通过简单几何结构和时间行为的示例进行解释。 推导出了用于估算这些效应大小的有用公式。 在第二部分中，将实际磁铁中的效应与数值结果和测量结果进行比较进行了分析和描述。 最后，基于前部分内容，给出了如何最小化涡流效应的设计建议。 显示英文摘要

摘要： This paper covers the main eddy current effects in accelerator magnets - field modification (time delay and field quality) and resistive power losses. In the first part, starting from the Maxwell equations, a basic understanding of the processes is given and explained with examples of simple geometry and time behaviour. Useful formulas are derived for an analytic estimate of the size of the effects. In the second part the effects in real magnets are analysed and described in comparison with numerical and measured results. Finally, based on the previous parts, design recommendations are given regarding how to minimize eddy current effects.