盘荷波导栏片圆弧对频率和尾场的影响

 利用变分法详尽地研究了X-波段盘荷波导中栏片圆弧对纵向模和横向模的影响，比较了不同栏片形状下加速模和横向模的频率与尾场。研究表明栏片形状对频率的影响较小，但对尾场的影响较大。在圆弧栏片和直边栏片两种情况下，最危险的EH₁₆模的尾场相差超过15%，因此栏片圆弧的作用是不能忽略的。

Study of the round edge disk hole's effects on the frequency and wakefield in disc structure

The effects of the round edge beam hole on the frequency and wake field are studied using variational method, which allows for rounded iris disk hole without any approximation in shape treatment. The frequencies and wakefields of accelerating mode and dipole mode are studied for different edge radius cases, including the flat edge shape that is often used to approximately represent the actual structure geometry. The edge hole shape has weak effect on the frequency, but strong effect on the wakefield. The study shows that the amounts of wakefields are not precise enough with the assumption of the flat edge beam hole as of round edge. The shape assumption brings loss factor 15% err for the most dangerous EH 16 mode.