学　术

　　人力资源部教师发展中心开展“名师讲堂”系列活动，定期邀请国内外知名专家学者、国家级教学名师等作专题报告，旨在加强广大师生的学术思想交流和碰撞，促进青年教师成长，开拓学生视野。

　　“名师讲堂”第32期活动特别邀请IEEE FELLOW Edl Schamiloglu教授主讲，欢迎广大师生参与。具体安排如下：

　　主　题：Recent Advances in High Power Microwave Source Research at the University of New Mexico and other Academic Institutions in the USA

　　主讲人：Prof. Edl Schamiloglu（IEEE Fellow）

　　时　间：5月13日（周五）10:00-12:00

　　地　点：沙河校区科研楼204

　　主持人：段兆云 教授

　　主办单位：人力资源部教师发展中心

　　承办单位：物理电子学院

　　内容简介：

　　The University of New Mexico has had a vigorous program in high power microwave (HPM) sources. We have made significant advances recently in both Cerenkov and crossed-field devices. In Cerenkov devices we have demonstrated a relativistic backward wave oscillator (BWO) that utilizes a novel Bragg reflector instead of a cavity reflector to reflect the backward-propagating wave into a forward wave. In addition to reflecting the backward TM01 wave, the Bragg reflector self-consistently converts it to a forward propagating TE11 wave. Furthermore, this design can lead to either single frequency or dual frequency operation. We have designed a metamaterial slow wave structure (MSWS) that has a dispersion curve that cannot be reproduced using traditional periodic structures. This MSWS generates radiation in S-band in a structure whose dimensions would be cutoff in smooth-walled waveguide. We are planning experiments to validate this structure design and wrestle with the difficult extraction problem. We recently demonstrated in experiment a relativistic magnetron with diffraction output (MDO) operating at over 60% efficiency when driven by a transparent cathode; we have designed an MDO with no physical cathode in the electromagnetic interaction region; we have designed an MDO using a permanent magnet assembly to provide the axial magnetic field; finally, we have a simple compact design of an MDO that, although operates less efficiently than the full size MDO, is significantly smaller and lighter weight. This presentation will review the recent advances at the University of New Mexico in theory, simulation, and experiment, and will also survey recent advances in HPM source research at other Universities in the USA.

　　主讲人介绍：

　　Edl Schamiloglu received his BS and MS from Columbia University in New York City in 1979 and 1981, respectively, and his PhD from Cornell University in 1988. He then joined the University of New Mexico as Assistant Professor where he is currently Distinguished Professor of Electrical and Computer Engineering. He is an IEEE Fellow and a recipient of the 2015 IEEE Nuclear and Plasma Sciences Society's Peter Haas Award. He is a coauthor of High Power Microwaves, 3rd Ed., published by CRC Press in 2016.