High power operation of the university of Maryland coaxial gyroklystron experiment

Journal Article · Mon Jul 12 04:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.58842· OSTI ID:21205352

Lawson, W; Arjona, M; Castle, M; Hogan, B; Granatstein, V; Reiser, M ^[1]

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1. Institute for Plasma Research and Electrical Engineering Department, University of Maryland, College Park, Maryland 20742 (United States)

We report the experimental studies of high power amplification in a coaxial three-cavity X-band gyroklystron. A single-anode magnetron injection gun (MIG) is used to produce a 520 A beam of 470 keV electrons with an average ratio of perpendicular-to-parallel velocity of about one. The voltage flat top is nearly 2 {mu}s. All cavities are designed to operate in the TE{sub 011} coaxial mode near 8.6 GHz. The input cavity is driven by a 150 kW, 3 {mu}s coaxial magnetron through a single slot in the radial wall. Peak powers of 75-85 MW are measured with a conversion efficiency of nearly 32% and a large signal gain of about 30 dB. This performance is in good agreement with simulations and represents approximately a tri-fold increase in the peak power capability of pulsed X-band gyroklystrons. We also report on the design of a three cavity second harmonic gyroklystron which is expected to produce 100 MW at 17.14 GHz. We close with a general discussion of scaling our designs to higher frequencies.

• OSTI ID: 21205352
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 472; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ANODES
BEAM INJECTION
CAVITY RESONATORS
DESIGN
EFFICIENCY
ELECTRON BEAMS
ELECTRON GUNS
ELECTRON SOURCES
ELECTRONS
GAIN
GHZ RANGE
KEV RANGE
KILO AMP BEAM CURRENTS
KLYSTRONS
MAGNETRONS
MEGAWATT POWER RANGE
MICROWAVE AMPLIFIERS
OPERATION
PEAK LOAD