A 0.4-THz Second Harmonic Gyrotron with Quasi-Optical Confocal Cavity
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Infrared, Millimeter, and Terahertz Waves"
DOI: 10.1007/s10762-017-0432-8
Abstract: Mode density is very relevant for harmonic gyrotron cavity. Theoretical investigations suggest that quasi-optical confocal waveguide performs low mode density and good mode-selective character. By selecting the appropriate mode and optimizing the cavity parameters, the… read more here.
Keywords: quasi optical; mode; harmonic gyrotron; gyrotron ... See more keywords
Design of the all solid high-voltage power supply for a gyrotron body
Sign Up to like & getrecommendations! Published in 2017 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2017.01.035
Abstract: Abstract Gyrotron plays an important role in the research of electron cyclotron resonance heating (ECRH) on Tokomak. The high-frequency switched power supply technology and pulse step modulation (PSM) technology are used in the development of… read more here.
Keywords: voltage; solid high; power; gyrotron ... See more keywords
Development of 170 GHz, 1 MW gyrotron with high-order TE31,11 mode oscillation for ITER EC system
Sign Up to like & getrecommendations! Published in 2018 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2017.12.042
Abstract: Abstract A TE31,11 mode gyrotron has being developed to improve the output power for the ITER electron cyclotron (EC) system. Strong mode competition having counter-rotating modes in both the high and/or low field sides is,… read more here.
Keywords: mode; gyrotron; te31 mode; high order ... See more keywords
Magnetic field profile analysis for gyrotron experimental investigation
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Plasmas"
DOI: 10.1063/1.4977460
Abstract: The external applied magnetic field plays a main role on the gyrotron operation. Even if the gyrotron design is optimized for the nominal magnetic profile, it is possible the performance to be better for an… read more here.
Keywords: gyrotron; magnetic field; profile; experimental investigation ... See more keywords
Multimode time-dependent gyrotron equations for different time scales
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Plasmas"
DOI: 10.1063/1.5000388
Abstract: Development of gyrotrons requires careful understanding of different regimes of gyrotron oscillations. For a long time, the gyrotron theory was developed assuming that the transit time of electrons through the interaction space is much shorter… read more here.
Keywords: multimode time; gyrotron equations; dependent gyrotron; time ... See more keywords
Electron-optical system for a high-current Ka-band relativistic gyrotron
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5085483
Abstract: An electron-optical system for a high-current relativistic Ka-band gyrotron was developed and experimentally tested. The system consists of a coaxial magnetically insulated diode forming a rectilinear hollow beam and an additional short coil (kicker) pumping… read more here.
Keywords: electron optical; system; gyrotron; optical system ... See more keywords
Starting behaviors of the TM-mode gyrotrons
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Plasmas"
DOI: 10.1063/1.5134725
Abstract: This work shows the derivations and calculations of the starting behaviors using the Laplace method and the numerical method. Calculated results based on these two methods agree well when dealing with a uniform structure, while… read more here.
Keywords: numerical method; gyrotron; starting behaviors; mode gyrotrons ... See more keywords
Intrinsic resonance in gyrotron using non-resonant RF structure
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Plasmas"
DOI: 10.1063/5.0187628
Abstract: Gyromonotrons are typically believed to rely on the convective interaction between the co-propagating beam and wave, with the extended energy-exchanging process stemming from the external feedback. However, numerous studies focusing on both transverse electric (TE)… read more here.
Keywords: intrinsic resonance; gyrotron; beam; gyrotron using ... See more keywords
A model of electron beam neutralization for gyrotron simulations
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Plasmas"
DOI: 10.1063/5.0202187
Abstract: A numerical model is presented to describe the electron beam neutralization during long-pulse and continuous-wave operation in gyrotrons. This model has been implemented in the electrostatic, self-consistent electron optics code Ariadne. Using this model, the… read more here.
Keywords: electron beam; beam; gyrotron; beam neutralization ... See more keywords
Microwave discharge supported by pulsed gyrotron radiation in powder mixtures of silver and aluminum oxide particles
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Plasmas"
DOI: 10.1063/5.0255090
Abstract: Microwave subthreshold discharge in argon supported by pulsed (6 ms) microwave radiation from a gyrotron (frequency 75 GHz, power density 10 kW/cm2) on the surface of a dielectric quartz substrate with a powder mixture of silver and alumina… read more here.
Keywords: gyrotron; radiation; discharge; powder ... See more keywords
Parametric decay of a gyrotron beam due to a rotating magnetic island in ASDEX Upgrade
Sign Up to like & getrecommendations! Published in 2024 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ad9847
Abstract: We investigate parametric decay instabilities (PDIs) of electron cyclotron waves due to a rotating neoclassical tearing mode (NTM) in ASDEX Upgrade. Strong scattering characteristic of PDIs is observed in a discharge where a (2,1) NTM… read more here.
Keywords: gyrotron; due rotating; parametric decay; magnetic island ... See more keywords