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Study of the beam–wave interaction of a 220 GHz coaxial-cavity gyrotron with two electron beams
Aip Advances ( IF 1.6 ) Pub Date : 2020-07-29 , DOI: 10.1063/5.0006889
Shenyong Hou 1
Affiliation  

In this paper, the mode selection, ohmic loss quality factor, mode competition, and beam–wave interaction of a 220 GHz coaxial-cavity gyrotron with two electron beams are studied by using the linear and nonlinear theories of a gyrotron. Research shows that a coaxial-cavity gyrotron with two electron beams has more advantages than a coaxial-cavity gyrotron with one electron beam in mode selection, suppressing mode competition and increasing output power, and the eigenvalue and the ohmic loss quality factor of modes have similar monotonicity in the direction of the gyrotron axis. Results find that (1) the current ratio K of the gyrotron has a greater influence on the beam–wave interaction efficiency of the two electron beams, (2) under B = 8.90 T, I = 136 A, α = 1.40, and K = 0.45, the coaxial-cavity gyrotron with two electron beams can operate steadily in the TE51,32− mode, which has an efficiency of 37.67% and an output power of 4.53 MW at f = 220.04 GHz, and (3) the total ohmic loss power of the gyrotron accounts for 1.3% of the output power.

中文翻译:

220 GHz同轴腔回旋管与两个电子束的束波相互作用研究

在本文中,利用回旋管的线性和非线性理论研究了220 GHz同轴腔回旋管与两个电子束的模式选择,欧姆损耗品质因数,模式竞争以及束波相互作用。研究表明,具有两个电子束的同轴腔旋流器在选择模式方面比具有一个电子束的同轴腔旋流器具有更多的优势,抑制了模式竞争并增加了输出功率,并且模式的本征值和欧姆损耗品质因数相似回旋轴方向的单调性。结果发现:(1)回旋管的电流比K对两个电子束的束波相互作用效率有较大影响,(2)在B = 8.90 T,I = 136 A,α时= 1.40,且K = 0.45,带有两个电子束的同轴腔回旋管可以在TE 51,32-模式下稳定运行,效率为37.67%,在f = 220.04 GHz时输出功率为4.53 MW,并且(3)回旋管的总欧姆损耗功率占输出功率的1.3%。
更新日期:2020-08-01
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