Experimental and theoretical investigations on coaxial gyrotron with two electron beams

Diwei Liu ^{1*, 2}, Yang Yan ^{1, 2}, Sheng Yu ^{1, 2}, Wenjie Fu ^{1, 2}, and Shenggang Liu ^{1, 2
1} Terahertz Science and Technology Center, School of Physical Electronics,University of Electronic Science and Technology of China, Chengdu, Sichuan, China, 610054
² Cooperative Innovation Center of Terahertz Science, Chengdu, Sichuan, 610054, China
^*1 Email: dwliu@uestc.edu.cn

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Abstract: The coaxial gyrotron with two electron beams is investigated in this paper. The results of the linear and nonlinear theory calculation show that CGTB has some distinguished advantages, such as improved mode competition and enhanced output power, so CGTB may be capable of providing 2-4 MW continuous-wave output power at 170 GHz to meet the demand of ITER Program. The results of the numerical calculation and PIC simulation show that CGTB can operate at two different frequencies simultaneously. In addition, the power of the high harmonic can be enhanced due to the nonlinear coupling between two electron beams. The prototype of CGTB is fabricated and the verification experiment is being conducted in progress.

Keywords: Terahertz, Coaxial gyrotron with two electron beams, Dual-frequency operation.

Received: 2015-6-15

Published: 2015-6-30

Cite this article:
Diwei Liu, Yang Yan, Sheng Yu, Wenjie Fu, and Shenggang Liu. Experimental and theoretical investigations on coaxial gyrotron with two electron beams[J]. International Journal of Terahertz Science and Technology, 2015, Vol.8, No.2: 50-57.  DOI:10.11906/TST.050-057.2015.06.06

URL: http://www.tstnetwork.org/10.11906/TST.050-057.2015.06.06