Open AccessDual-Mode Reltron
Author(s) -
Shawn Soh,
R. Bruce Miller,
Edl Schamiloglu,
Christos G. Christodoulou
Publication year - 2012
Publication title -
ieee transactions on plasma science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.46
H-Index - 106
eISSN - 1939-9375
pISSN - 0093-3813
DOI - 10.1109/tps.2012.2200507
Subject(s) - engineered materials, dielectrics and plasmas , fields, waves and electromagnetics
We propose exciting two modes concurrently inside a reltron's modulating cavity to increase the microwave power generated. From the harmonic components of the beam, we demonstrate that a multiharmonic beam has a higher peak and steeper gradient compared to a single-harmonic beam. We design a modulating cavity and an extraction cavity that are able to excite the TM010 mode (2.395 GHz) and TM110 (3.579 GHz) modes separately or concurrently. Particle-in-cell simulations show that the total microwave generated for the single TM010 mode is 81 MW (efficiency of 23%) and the single TM110 mode is 40.5 MW (efficiency of 17%). The total microwave power generated by exciting both modes is 128 MW (efficiency of 35%) and is higher than the power generated by individual modes.