任意截面真空室中的陷阱模
Trapped Modes in the Vacuum Chamber of an Arbitrary Cross Section
摘要：
它已经表明，一个小的不连续性，如一个扩大或圆形波导上的孔可以产生捕获的电磁模式的频率略低于波导截止。由于多个不连续性的捕获模式可以导致高窄带贡献的束室耦合阻抗，特别是当壁电导率足够高时。为了更可靠地估计这些贡献的实际机器，本文的分析理论的捕获模式的发展，为一般情况下的真空室具有任意单连通截面。计算了陷波模引起的谐振频率和耦合阻抗，给出了圆形和矩形截面的简单显式表达式。LHC的估计。
英文摘要：
It has been shown that a small discontinuity such as an enlargement or a hole on circular waveguides can produce trapped electromagnetic modes with frequencies slightly below the waveguide cutoff. The trapped modes due to multiple discontinuities can lead to high narrow-band contributions to the beam-chamber coupling impedance, especially when the wall conductivity is high enough. To make more reliable estimates of these contributions for real machines, an analytical theory of the trapped modes is developed in this paper for a general case of the vacuum chamber with an arbitrary single-connected cross section. The resonant frequencies and coupling impedances due to trapped modes are calculated, and simple explicit expressions are given for circular and rectangular cross sections. The estimates for the LHC are presented.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
