摘要
建立了C波段磁绝缘线振荡器开放腔模型，通过监测宽带激励源的响应计算出开放腔的谐振频率和有载品质因数。用时域有限差分法计算了不同的径向位置一个周期内的径向电场随纵向距离的变化。计算表明：0～4．1cm区电场很小但不为零；4．1～11．5cm区域电场呈现驻波特性；在11．5～20cm区域电场分布比较复杂．表现两个性质．一是驻波场过渡到行波场，二是从周期性加载圆柱谐振腔的TM。。模过渡到同轴线的TEM模；在20-36．85cm区域电场每经过1／4周期向右传播1／4波长，表现出行波特性。由此根据该计算结果将开放腔中的场从左到右分成4个区：截止区、驻波区、过渡区和行波区。最后根据定义计算了开放腔的固有品质因数和有载品质因数。
This paper presents an analysis of open cavity of C-band MILO. The eigenfrequency of the open cavity and Q factor of loaded-cavity are calculated by observing the response of the broad-band driver. The numerical method based on the finite difference method in time domain is applied to calculate the radial electric field of the open cavity within one period. The distribution of the field is divided into four regions, the cut-off region, the standing wave region, the transition region, and the travelingwave region. The inherent Q factor and the loaded Q factor are also calculated.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2006年第1期101-104,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
