A 140 GHz Gyro-Amplifier Using a Sever-Less Confocal Waveguide

被引：0
|
作者：
Soane, Alexander V. [1 ]
Guss, William C. [1 ]
Jawla, Sudheer [1 ]
Shapiro, Michael A. [1 ]
Temkin, Richard J. [1 ]
机构：
[1] MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA
来源：
2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2016年
关键词：
Gyrotron; gyro-amplifier; confocal waveguide;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A 140 GHz, 1 kW pulsed gyro-amplifier system is being developed at MIT for enhanced Dynamic Nuclear Polarization for NMR (DNP-NMR). A confocal geometry configuration is being explored as an approach to achieving an overmoded interaction waveguide. This confocal waveguide has been redesigned to operate without severs. A study of electron beam quality over a wide parameter space directed the choice for a new operating point. Mode converters were designed with the goal of improving coupling into the mode of operation within the circuit. This experiment has operated with a peak circuit gain of 23 dB over 1.4 GHz of bandwidth. Current efforts include improving the device gain by reducing input losses and studying the electron gun performance.
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页数：2
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