Development of Higher Efficiency MW-Power 230-GHz Gyrotron With Nonadiabatic Electron Gun

We study the possibility of implementing a higher efficiency gyrotron intended for plasma heating in advanced nuclear fusion facilities. To increase the efficiency above the standardly attainable value of about 50%, it is proposed to use an electron beam with a high oscillatory energy and a low-velo...

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Bibliographic Details
Published in:IEEE transactions on electron devices 2023-12, Vol.70 (12), p.6558-6562
Main Authors: Glyavin, M. Yu, Goldenberg, A. L., Krupin, D. S., Leshcheva, K. A., Malkin, A. N., Manuilov, V. N., Mocheneva, O. S., Sergeev, A. S., Zotova, I. V., Zheleznov, I. V.
Format: Article
Language:English
Subjects:
Anodes
Cyclotron resonance devices
Earth Observing System
Electric potential
Electron beams
Electron guns
Energy recovery
Energy recovery systems
Gyrotrons
Magnetic fields
megawatt (MW)-level gyrotrons
nonadiabatic (NA) electron-optical systems
Nuclear fusion
Plasma heating
Wave interaction
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Summary:We study the possibility of implementing a higher efficiency gyrotron intended for plasma heating in advanced nuclear fusion facilities. To increase the efficiency above the standardly attainable value of about 50%, it is proposed to use an electron beam with a high oscillatory energy and a low-velocity spread, which can be formed in a nonadiabatic electron-optical system. Based on numerical simulations of electron-wave interaction, we demonstrate that the efficiency of a 230-GHz megawatt (MW)-level gyrotron with a single-stage energy recovery system can exceed 75%.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2023.3323442