High-Harmonic Gyrotron Oscillators and Gyro-Klystron Amplifiers

The design and performance of several millimeter-wave harmonic gyrotron concepts are described in which the interaction is between axis-encircling electrons and cylindrical cavity TE/sub n11/ modes. This allows the magnetic field of the gyrotron to be reduced by an order of magnitude. Efficiencies u...

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Bibliographic Details
Main Authors: McDermott, D.B., Furuno, D.S., Luhmann, N.C.
Format: Conference Proceeding
Language:English
Subjects:
Cyclotrons
Electrons
Frequency measurement
Gain measurement
Gyrotrons
Magnetic field measurement
Millimeter wave measurements
Oscillators
Tellurium
Testing
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Description
Summary:The design and performance of several millimeter-wave harmonic gyrotron concepts are described in which the interaction is between axis-encircling electrons and cylindrical cavity TE/sub n11/ modes. This allows the magnetic field of the gyrotron to be reduced by an order of magnitude. Efficiencies up to 15% have been measured for moderate harmonic interactions, multi-kW per levels have been attained at the eleventh harmonic of the cyclotron frequency, 65 GHz waves have been produced, and a sixth-harmonic gyro-klystron amplifier has yielded 23 dB gain. Also, an 18 GHz, 1/2 MW fourth-harmonic gyrotron has been constructed and is being tested.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.1984.1131791