Theoretical and Numerical Investigation of a Four-cavity TE021-Mode Gyroklystron

Wang, Jianxun; Luo, Yong; Xu, Yong; Li, Hongfu

doi:10.1007/s10762-008-9415-0

Cited by 9 publications

(5 citation statements)

References 10 publications

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“…Ignoring the non-resonant part p = iu t e −iθ , Ω 0 = eB 0 /m e the normalised motion equation is given by [9]…”

Section: Interaction Circuit Designmentioning

confidence: 99%

“…γ i and γ f are the initial and final relativity factors and α 0 is the electron beam pitch factor. Based on (8) and (9), a non-linear code was developed in MATLAB to calculate the gain of the beam-wave interaction process and the efficiency. The efficiency and electron distribution were obtained for each cavity respectively, as shown in Figs.…”

Section: Interaction Circuit Designmentioning

confidence: 99%

“…In subsequent years, gyroklystrons have also been used for remote communication and material processing [9,10]. These high-power millimetre wave amplifiers also attract interest for accelerator applications [11].…”

Section: Introductionmentioning

confidence: 99%

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Design of a Ka‐band MW‐level high efficiency gyroklystron for accelerators

Wang

Dong

et al. 2018

IET Microwaves, Antennas & Propagation

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Design of a three-cavity Ka-band MW-level gyroklystron operated at the fundamental TE02 mode is presented in this paper. The initial design of the magnetron injection gun (MIG) and interaction circuit has been completed by using the PIC (Particle in cell) code MAGIC. The PIC simulation shows this gyroklystron can deliver an output power of more than 1.5 MW with a gain of > 35 dB at 36 GHz. The achieved efficiency exceeds 40 % when driven by a 95 kV, 45 A beam. The optimized MIG has a transverse velocity spread of less than 2.5% when the velocity ratio is around 1.3.

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“…Ignoring the non-resonant part p = iu t e −iθ , Ω 0 = eB 0 /m e the normalised motion equation is given by [9]…”

Section: Interaction Circuit Designmentioning

confidence: 99%

Section: Interaction Circuit Designmentioning

confidence: 99%

See 1 more Smart Citation

Design of a Ka‐band MW‐level high efficiency gyroklystron for accelerators

Wang

Dong

et al. 2018

IET Microwaves, Antennas & Propagation

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“…Recently there has been significant progress (Pierantoni et al , 2008; Ahmed et al , 2010; Wang et al , 2008; Valsov and Antonsen, 2001; Luo et al , 2005; Singh et al , 2010; Liu and Li, 2011) in numerical simulations of the interaction between particles and fields. There are several types of code program in which the fields are calculated by using the finite difference time domain (FDTD) scheme, and the particles are described by the particle‐in‐cell (PIC) scheme.…”

Section: Introductionmentioning

confidence: 99%

Simulation on the interaction between particles and fields for gyroklystron amplifier

Guo

Shen

et al. 2012

COMPEL

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PurposeThe purpose of this paper is to formulate and simulate the interaction between particles and fields for gyroklystron amplifier rapidly and effectively.Design/methodology/approachFrom Maxwell's equations, transient electromagnetic field equations and particle motion equations, as the subject of a self‐consistent field theory, are obtained by semi‐analytical and semi‐numerical method. A numerical calculation model on the interaction between particles and fields is proposed and illustrated in detail. Based on above‐mentioned field theory, calculation model and the Runge‐Kutta method, a program to simulate the interaction between particles and fields is designed and its software implementation is achieved using Fortran language. To testify the correctness of the calculation model, a millimeter wave gyroklystron amplifier is simulated by the program, and some numerical results are presented and analyzed. Meanwhile, a contrast among the simulated frequency characteristic, the FDTD‐PIC results and the experiments is made. The computing resources needed by the program are compared with that needed by the FDTD‐PIC method.FindingsThe calculation results show that the model and the program take less CPU time and fewer computing resources than FDTD‐PIC simulation. Moreover, simulated results are in accord with the FDTD‐PIC results and the experiments.Originality/valueA calculation model on the interaction between particles and fields is proposed and achieved in this paper. A program is designed and proved to be a fast and effective calculation tool for solving the simulation of the interaction. In addition, a detailed speed spread model of particles is studied. The calculation model considering speed spread, the program and the simulated results constitute the main contribution of this paper.

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“…To demonstrate the mathematical models for the design and analysis of gyroklystron using self-consistent as well as linear and nonlinear approaches; a number of literature have been published [10][11][12][13][14]. These approaches have also been adopted for the optimization of device efficiency and RF output power.…”

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confidence: 99%