Recirculating-Planar-Magnetron Simulations and Experiment

Author

Franzi, M.A. ; Gilgenbach, Ronald M. ; Hoff, Brad W. ; Chalenski, D.A. ; Simon, D. ; Lau, Y.Y. ; Luginsland, John

Author_Institution

Plasma, Pulsed Power, & Microwave Lab., Univ. of Michigan, Ann Arbor, MI, USA

Volume

41

Issue

4

fYear

2013

fDate

Apr-13

Firstpage

639

Lastpage

645

Abstract

Microwave oscillation has been measured for the first time in a 12-cavity axial-magnetic-field recirculating planar magnetron, designed to operate in π mode at 1 GHz. The device operates with a -300-kV pulsed cathode voltage and a 0.2-T axial magnetic field, and oscillates at transverse currents exceeding 1 kA when driven by an electron beam pulselength between 0.5 and 1 μs. Microwave pulses were measured at frequencies between 0.97-1 GHz and achieved several hundred nanoseconds in length. Mode competition was observed between the π and 5 π/6 modes.

Keywords

UHF oscillators; UHF tubes; magnetic field measurement; magnetrons; microwave measurement; microwave oscillators; pulse measurement; π mode; 12-cavity axial-magnetic-field recirculating planar magnetron; 5 π-6 mode; electron beam pulselength; frequency 0.97 GHz to 1 GHz; magnetic flux density 0.2 T; microwave oscillation; microwave pulse measurement; pulsed cathode voltage; time 0.5 mus to 1 mus; transverse current oscillation; voltage -300 kV; Anodes; Cathodes; Cavity resonators; Magnetic resonance; Microwave measurement; Microwave oscillators; Cavity magnetron; high power microwave; recirculating planar magnetron (RPM); vacuum electronics;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2242493

Filename

6472084