Journal ArticleDOI
Nonlinear Simulation of a Cyclotron Autoresonance Maser (CARM) Operating in a Transverse Magnetic Mode
Bing-Fu Liu,Shi-Chang Zhang +1 more
TLDR
In this article, a TM-mode CARM is derived and detailed simulations are presented for the TM1,1-mode autoresonance maser, which can reach high power of megawatts and ultra-high gain of more than 70 dB, as a TE1, 1-mode gyrotron traveling wave tube (gyro-TWT) and TE1-1-maser did in the reported experiments.Abstract:
In the gyrotron operation, the transverse-magnetic (TM) mode is excluded because the TM mode instability vanishes when the vacuum waveguide mode and the beam mode are at grazing incidence. However, situation changes in a cyclotron autoresonance maser (CARM) interaction. In this paper nonlinear formulation of a TM-mode CARM is derived, and detailed simulations are presented for the TM1,1-mode CARM. Simulation results show that a TM1,1-mode CARM can reach high power of megawatts and ultrahigh gain of more than 70 dB, as a TE1,1-mode gyrotron traveling wave tube (gyro-TWT) and TE1,1-mode CARM did in the reported experiments.read more
Citations
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Linear and nonlinear theory of the Doppler-shifted cyclotron resonance maser based on TE and TM waveguide modes
TL;DR: In this article, a comprehensive theory of the cyclotron resonance maser (CRM) interaction in a circular waveguide is presented, and the conditions for maximum temporal and spatial growth rates are shown.
Journal ArticleDOI
Asymmetric linear efficiency and bunching mechanisms of TM modes for electron cyclotron maser
TL;DR: In this article, the authors examined the transverse magnetic (TM) waveguide modes, which have long been considered as the unsuitable ones for the operation of the electron cyclotron maser.
Journal ArticleDOI
Nonlinear oscillations of TM-mode gyrotrons
TL;DR: In this paper, the authors investigated the interaction between relativistic electrons and the waves in cavities with fixed field profiles, including three first-axial modes, TE011, TM011, and TM111, and two zero-axially modes, TM010 and TM110.
Journal ArticleDOI
Possibilities of Increasing the Output Radiation Power of High-Current Relativistic Gyrotrons Using Operating Modes of the TM Type
A. N. Leontyev,E. B. Abubakirov,V. I. Belousov,Yu. M. Guznov,Roman M. Rozental,A. E. Fedotov,V. P. Tarakanov,V. P. Tarakanov +7 more
TL;DR: In this paper, the authors considered the possibility of mastering higher injection currents and increasing the output power of high-current relativistic millimeter-wave gyrotrons using operating modes of the TM type.
Proceedings ArticleDOI
Nonlinear multimode interaction in a higher-order-mode cyclotron autoresonance maser
Bin Chai,Shi-Chang Zhang +1 more
TL;DR: In this article, a sub-terahertz (0.35 THz) CARM operating in a higher-order mode TE 5, 1 was simulated, where nonlinear interaction of the operating mode with its neighboring modes was taken into account.
References
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Journal ArticleDOI
Relativistic gyrotrons and cyclotron autoresonance masers
TL;DR: In this article, it was shown that the eyelotron auto-resonance maser is the most effective free electron laser (Doppertron) at milimetere and submillimetre wavelengths.
Journal ArticleDOI
Theory and experiment of ultrahigh-gain gyrotron traveling wave amplifier
Kwo Ray Chu,Han-Ying Chen,Chien-Lung Hung,Tsun-Hsu Chang,L.R. Barnett,Shih Hung Chen,Tz-Te Yang,D.J. Dialetis +7 more
TL;DR: In this article, the authors classified and characterized oscillations of various origins with detailed theoretical modeling and showed that the interplay between the absolute/convective instabilities, circuit losses, and reflective feedback leads to the concept of ultra high gain scheme which employs distributed wall losses for the suppression of spurious oscillations.
Linear and nonlinear theory of the Doppler-shifted cyclotron resonance maser based on TE and TM waveguide modes
TL;DR: In this article, a comprehensive theory of the cyclotron resonance maser (CRM) interaction in a circular waveguide is presented, and the conditions for maximum temporal and spatial growth rates are shown.
Journal ArticleDOI
Linear and non-linear theory of the Doppler-shifted cyclotron resonance maser based on TE and TM waveguide modes
TL;DR: In this article, a comprehensive theory of the cyclotron resonance maser (CRM) interaction in a circular waveguide is presented, and the conditions for maximum temporal and spatial growth rates are shown.
Journal ArticleDOI
Ultrahigh Gain Gyrotron Traveling Wave Amplifier
Kwo Ray Chu,Hsuan-Chen Chen,C. L. Hung,Tsun-Hsu Chang,L.R. Barnett,Shih Hung Chen,T. T. Yang +6 more
TL;DR: In this article, the authors analyzed the physical origins of spurious oscillations in gyrotron traveling wave amplifiers and provided zero-drive stability at ultra-high gain with a proof-of-principle experiment in the $\mathrm{Ka}$ band.
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