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
Generation of 1.5 MW–140 GHz Pulses With the Modular Pre-Prototype Gyrotron for W7-X
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Electron Device Letters"
DOI: 10.1109/led.2021.3073221
Abstract: In anticipation of an Electron Cyclotron Resonance Heating system upgrade for the stellarator Wendelstein 7-X, a 1.5 MW – 140 GHz continuous-wave gyrotron is under development. In order to provide a first experimental verification of… read more here.
Keywords: 140 ghz; prototype gyrotron; pre prototype; gyrotron ... See more keywords
Simulations of Sectioned Cavity for High-Harmonic Gyrotron
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2016.2629029
Abstract: A recently proposed method of decreasing the ohmic losses in long gyrotron cavities is thoroughly studied. Its workability is proved using various simulations. A fourth-cyclotron-harmonic submillimeter-wavelength gyrotron, which utilizes this method, is designed, and its… read more here.
Keywords: sectioned cavity; cavity high; simulations sectioned; harmonic gyrotron ... See more keywords
CW Experiments With the EU 1-MW, 170-GHz Industrial Prototype Gyrotron for ITER at KIT
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2017.2730242
Abstract: The European 1-MW, 170-GHz continuous wave industrial prototype gyrotron for electron cyclotron resonance heating and current drive on international thermonuclear experimental reactor was during 2016 under test at the Karlsruhe Institute of Technology (KIT) test… read more here.
Keywords: 170 ghz; industrial prototype; gyrotron; kit ... See more keywords
Numerical Investigation on Spent Beam Deceleration Schemes for Depressed Collector of a High-Power Gyrotron
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2017.2784185
Abstract: Single-stage depressed collector systems are widely used in high-power gyrotrons in order to increase the overall efficiency. The position where the deceleration of the beam takes place influences the collector efficiency. In this paper, several… read more here.
Keywords: high power; depressed collector; gyrotron; collector ... See more keywords