The Development of 170 GHz, 1 MW Gyrotron for Fusion Application

Electronics

Ming Jin¹  Qiao Liu²  Jinjun Feng²  Dongshuo Gao²  Wenteng Hao²  Yichi Zhang²  Xu Zeng²  Ming Bai³ 

[1] College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100129, China;National Key Laboratory of Science and Technology on Vacuum Electronics, Beijing Vacuum Electronics Research Institute, Beijing 100015, China;School of Electronic Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100871, China;

关键词: gyrotron;    170 GHz;    TE_25,10 mode;    fusion;   

DOI  :  10.3390/electronics11081279

来源: DOAJ

【 摘 要 】

This paper presents the overall conceptual design of a 170 GHz, 1 MW gyrotron for plasma heating applications in thermonuclear fusion reactors. The operating mode is carefully selected with consideration of mode competition. The TE_25,10 mode is determined as the operating mode in the present study. A weakly tapered conventional resonator is used for the study of the RF behavior, and multimode calculations are carried out for power and efficiencies. The optimized structure of the beam tunnel can further attenuate low-frequency oscillation. The design studies of a triode-type magnetic injection gun, quasi-optical mode converter, and single-disc sapphire window are also described. In addition, novel cold test methods which can effectively validate assembles are designed. In 2021, a prototype gyrotron was fabricated to validate the electronic–optic system and RF system. The current results obtained support an output power of 210 kW and efficiency of 15.9% through an initial low-power experiment. On the basis of the optimized design, an industrial prototype gyrotron is under fabrication as the heating source for the thermonuclear experimental reactor.

【 授权许可】

Unknown