NDLI: RF Priming Experiments on a Relativistic Magnetron

Content Provider	IEEE Xplore Digital Library
Author	White, W.M. Hoff, B.W. Gilgenbach, R.M. Jones, M.C. Neculaes, V.B. Lau, Y.Y. Jordan, N. Pengvanich, P. Edgar, R. Spencer, T.A. Price, D.
Copyright Year	2005
Description	Author affiliation: Dept. of Nucl. Eng. & Radiol. Sci., Michigan Univ., Ann Arbor, MI (White, W.M.; Hoff, B.W.; Gilgenbach, R.M.; Jones, M.C.; Neculaes, V.B.; Lau, Y.Y.; Jordan, N.; Pengvanich, P.; Edgar, R.)
Abstract	Summary form only given. Research is underway to investigate radio frequency (RF) priming of relativistic magnetrons for rapid startup and reduced mode competition. Experiments utilize the MELBA-C to drive the Titan 6-vane relativistic magnetron at parameters: V=-300 kV, I=1-10 kA, e-beam pulselength=0.5 musec, microwave power=100-500 MW, microwave frequency=1-1.3 GHz (with tuning). MELBA-C's ceramic insulator enables base vacuum down to 8.5E-8 torr. The RF priming source is a 230 kW, 3 musec, pulsed magnetron from AFRL operating at 1.27-1.32 GHz. Tuning stubs are utilized in the Titan tube to adjust the frequency of the relativistic magnetron to match that of the priming magnetron. Microwaves are injected into 1 of the 3 open coupling slots in the MELBA-C relativistic magnetron. Time frequency analysis (TFA) of the magnetron's microwave output shows a clear effect of the RF priming on the relativistic magnetron. Frequency locking is observed when the priming RF frequency is sufficiently well matched to that of the relativistic magnetron. When the priming RF frequency is detuned, mode-beating is observed in agreement with the theory. Concurrent with the experiments are simulations utilizing the MAGIC 3D code to investigate the effects of RF priming on the relativistic magnetron.
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	352
Ending Page	352
File Size	953012
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359513
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Cathodes Diodes Microwave oscillators High power microwave generation Microwave generation Pulse generation Space vector pulse width modulation Microwave frequencies Computer simulation
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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