强激光与粒子束, 2010, 22 (3): 618, 网络出版: 2010-05-28   

新型低阻抗同轴慢波器件模拟研究

Simulative study on new coaxial slow-wave oscillator with low impedance
作者单位
北京应用物理与计算数学研究所,北京 100088
摘要
提出一种新型的低阻抗同轴慢波器件,它利用阳极金属网将二极管区与波束互作用区分开,并在波束互作用区采用内外双盘荷波导慢波结构以提高波束互作用效率。利用全电磁粒子模拟软件进行优化设计,结果表明:在输入电功率100 GW、电流95.4 kA的条件下,同轴慢波器件可在L波段获得23 GW的平均输出功率,功率转换效率达到23%。该器件无需外加磁场,结构简单,小型轻便。同时还对阳极金属网的温升状况进行了简单的估算。
Abstract
A new coaxial slow-wave oscillator with low impedance was designed. Its diode is seperated from the beam-wave interaction section by the metal mesh in the anode. In order to increase its efficiency,the beam-wave interaction section adopts the double slow-wave structure. The oscillator was optimized by 2D fully electromagnetic particle-in-cell(PIC) code. The optimal model gains the averaged output power in a period of 23 GW and a power conversion efficiency of 23% in L band when the input power is 100 GW and the input current is 95.4 kA. The oscillator is compact and lightweight,requiring no external magnetic field. In addition,the temperature rising of the metal mesh in the anode was simply estimated.

孙会芳, 董志伟. 新型低阻抗同轴慢波器件模拟研究[J]. 强激光与粒子束, 2010, 22(3): 618. Sun Huifang, Dong Zhiwei. Simulative study on new coaxial slow-wave oscillator with low impedance[J]. High Power Laser and Particle Beams, 2010, 22(3): 618.

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