[Oral Presentation]Design of a Quasi-Optical Launcher for 263 GHz Low Order Mode gyrotron - Presentation details

Design of a Quasi-Optical Launcher for 263 GHz Low Order Mode gyrotron
ID:80 Submission ID:123 View Protection:ATTENDEE Updated Time:2022-10-15 05:40:17 Hits:299 Oral Presentation

Start Time:2022-11-04 08:30 (Asia/Shanghai)

Duration:20min

Session:[F] High Magnetic Field Engineering and Fusion Technology [OS4] Oral Session 4

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Abstract
In this paper, a Quasi-Optical launcher operating at 263 GHz with low order TE3,2 mode is designed for THz gyrotron at Wuhan National High Magnetic Center (WHMFC). A TE3,2 to TE8,3 mode converter is designed up front, because the lower-order operating TE3,2 mode does not follow the mode selection rules for Denisov-type launchers. The launcher consists of a left-handed (LH) TE3,2 to right-handed (RH) TE8,2 11-fold helically corrugated waveguide mode converter, a TE8,2 to TE8,3 azimuthally symmetric ripple-wall waveguide mode converter and a Denisov-type launcher. A coupled-wave theory MATLAB code for analysis of the electromagnetic fields at the deformed waveguide wall has been developed. The commercial simulation result shows the launcher can generate a Gaussian-like mode with a scalar correlation coefficient of 93.50% and a vector correlation coefficient of 85.65% on the observation surface.
Keywords
Azimuthally symmetric ripple-wall waveguide;Denisov launcher;gyrotrons;Helically corrugated waveguide;mode converter
Speaker
Hanqing Zhou
Huazhong University of Science and Technology

Submission Author
Hanqing Zhou Huazhong University of Science and Technology
Yu Huang Huazhong University of Science and Technology
Xianfei Chen Huazhong University of Science and Technology
Houxiu Xiao Huazhong University of Science and Technology
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