Microwave Power and Phase Measurements on a Recirculating Planar Magnetron

Calibrated microwave power and phase measurements are presented for the first recirculating planar magnetron prototype consisting of two coupled six-cavity 1-GHz planar cavity arrays. The results are presented for a solid cathode and two mode-control cathodes (MCCs) with aluminum or velvet electron...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2015-05, Vol.43 (5), p.1675-1682
Main Authors: Franzi, Matthew A., Greening, Geoffrey B., Jordan, Nicholas M., Gilgenbach, Ronald M., Simon, David H., Lau, Y. Y., Hoff, Brad W., Luginsland, John
Format: Article
Language:English
Subjects:
Aluminum
Cathodes
Cavity magnetron
Electric currents
Electromagnetic heating
Electrons
frequency locking
high-power microwaves (HPMs)
Magnetic fields
Measurement techniques
Microwave measurement
Microwave oscillators
Microwaves
Phase measurement
Prototypes
recirculating planar magnetron (RPM)
vacuum electronics
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Summary:Calibrated microwave power and phase measurements are presented for the first recirculating planar magnetron prototype consisting of two coupled six-cavity 1-GHz planar cavity arrays. The results are presented for a solid cathode and two mode-control cathodes (MCCs) with aluminum or velvet electron emitters. The measurements were conducted using a prototype coaxial microwave power extraction scheme. The experimental operating parameters included: pulsed cathode voltages between -250 and -300 kV, voltage pulselengths of 200-600 μs, axial magnetic fields of 0.1-0.32 T, and entrance currents of 1-10 kA. The results showed improved oscillator frequency locking for the MCCs and increases in power and efficiency using the velvet electron emitter.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2015.2417774