The transparent cathode: rejuvenator of magnetrons and inspiration for new RF sources
The transparent cathode: rejuvenator of magnetrons and inspiration for new RF sources
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DOI：
10.1049/cp.2009.0002
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
E. Schamiloglu;M. Fuks
中科院分区：
文献类型：
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作者：
E. Schamiloglu;M. Fuks
自20世纪70年代以来，相对论磁控管作为一种高功率微波源进行了研究。它是一种简单的无源装置，只需要均匀的磁场。设计一个中心频率从l波段到x波段的相对论磁控管是可能的，并且也有可能在中心频率上提供一些适度的频率敏捷性。最近，新墨西哥大学的研究人员提出，透明阴极可以显著改善磁控管的输出特性。从那时起，一项使用电池内粒子模拟的综合研究已经确定了使用这种阴极的许多好处。本文将回顾使用透明阴极操作相对论性和非相对论性磁控管的显著特征。此外，新墨西哥大学正在进行的由短脉冲正弦-6加速器驱动的A6磁控管实验的进展也将被介绍。本报告将以讨论波纹场磁控管（我们称之为“最简单的Ubitron”）的新变体来结束，它可以产生相干辐射和噪声。其他受益于透明阴极的器件也将被讨论。(5页)
The relativistic magnetron has been studied as a high power microwave source since the 1970's. It is a simple, passive device requiring only a uniform magnetic field. It is possible to design a relativistic magnetron with center frequency from L-band to X-band, and it is possible to provide some modest frequency agility about the center frequency as well. Recently, researchers at the University of New Mexico proposed that a transparent cathode can significantly improve the output characteristics of magnetrons. Since then, a comprehensive study using particle-in-cell simulations has identified the many benefits of using this cathode. This paper will review the salient features of operating relativistic and non-relativistic magnetrons using a transparent cathode. In addition, progress from ongoing experiments at the University of New Mexico on an A6 magnetron driven by a short-pulse Sinus-6 accelerator will be presented. The presentation will conclude with a discussion of novel variants of the rippled-field magnetron (what we call the "Simplest Ubitron") that can produce coherent radiation as well as noise. Other devices benefiting from the transparent cathode will be discussed as well. (5 pages)