Title :
High-efficiency relativistic backward wave oscillator: theory and design
Author :
Levush, Baruch ; Antonsen, Thomas M Jr ; Vlasov, Alexander N. ; Nusinovich, Gregory S. ; Miller, Susanne M. ; Carmel, Yuval ; Granatstein, Victor L. ; Destler, William W. ; Bromborsky, Alan ; Schlesiger, Chris ; Abe, David K. ; Ludeking, L.
Author_Institution :
Maryland Univ., College Park, MD, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
Backward wave oscillators (BWOs) driven by high-current relativistic electron beams are capable of producing high-power coherent radiation in the centimeter and millimeter wavelength regions. However, the efficiency of these devices is usually limited to 15-20% when a homogeneous slow-wave structure is used. Utilizing a two-section slow-wave structure, where the spatial period of the second section is larger than that of the first section, a BWO efficiency of greater than 50% was calculated. A conceptual design of a high-efficiency S-band BWO driven by a 500-kV 5-kA electron beam has been developed and analyzed
Keywords :
backward wave oscillators; electron beams; millimetre wave tubes; relativistic electron beam tubes; slow wave structures; 5 kA; 500 kV; centimeter wavelength regions; design; high-current relativistic electron beams; high-efficiency S-band BWO; high-efficiency relativistic backward wave oscillator; high-power coherent radiation; homogeneous slow-wave structure; millimeter wavelength regions; theory; two-section slow-wave structure; Acceleration; Electromagnetic scattering; Electron beams; Laboratories; Magnetic analysis; Magnetic field measurement; Magnetic fields; Millimeter wave technology; Oscillators; Radio frequency;
Journal_Title :
Plasma Science, IEEE Transactions on
