摘要
利用变分法详尽地研究了 X-波段盘荷波导中栏片圆弧对频率和尾场的影响 ,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形下 ,最危险 EH1 6 模的尾场相差超过 1 5% 。
The effects of the round edge beam hole on the frequency and wakefield are studied by 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% error for the most dangerous EH16 mode.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第2期219-222,共4页
High Power Laser and Particle Beams
