35-GHz 25-kW CW low-voltage third-harmonic gyrotron

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/27.532944· OSTI ID:377819

McDermott, D B; Balkcum, A J; Luhmann, Jr, N C ^[1]

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1. Univ. of California, Davis, CA (United States). Dept. of Applied Science

A 50-kV third-harmonic gyrotron is shown to be capable of high efficiency. Operation at the third harmonic allows the required magnetic field for 35 GHz generation to be supplied by a 4.5-kG permanent magnet. Two gyrotrons employing sliced circuits for mode control have been evaluated with a large-signal nonself-consistent particle-tracing simulation code and found to be capable of producing 25 kW continuously. The preliminary design of a third-harmonic TE{sub 41} gyrotron utilizing a magnetron injection electron gun is predicted to yield a device efficiency of 17%, which can potentially be increased to 46% with an ideal single-stage depressed collector, while an axis-encircling electron beam from a Cusp electron gun is predicted to drive a third-harmonic TE{sub 31} gyrotron with a device efficiency of 23%, which can theoretically be increased to 45% through the use of an ideal depressed collector.

• OSTI ID: 377819
• Journal Information: IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 3 Vol. 24; ISSN ITPSBD; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DESIGN
ELECTRIC POTENTIAL
HARMONICS
MICROWAVE AMPLIFIERS
MODE CONVERSION
OSCILLATION MODES
PERFORMANCE
USES