Title :
Simulations of magnetic priming in a relativistic magnetron
Author :
Jones, Michael C. ; Neculaes, V. Bogdan ; White, William M. ; Lau, Y.Y. ; Gilgenbach, Ronald M. ; Luginsland, John W. ; Pengvanich, P. ; Jordan, N.M. ; Hidaka, Y. ; Bosman, Herman L.
Author_Institution :
Dept. of Nucl. Eng. & Radiol. Sci., Univ. of Michigan, Ann Arbor, MI, USA
fDate :
5/1/2005 12:00:00 AM
Abstract :
Two-dimensional simulations have been performed on a six-vane relativistic magnetron with uniform axial magnetic fields versus azimuthally varying axial magnetic fields, defined as magnetic priming. Electron phase-space plots show rapid growth of the π-mode when the axial magnetic field has three-azimuthal perturbations: it takes 36 ns for the π-mode to dominate in the uniform magnetic field case versus only 13 ns for the π-mode to dominate in the case with magnetic priming imposed. RF electric field plots versus time show the suppression of the 2π/3-mode when magnetic priming is imposed.
Keywords :
magnetic fields; magnetrons; relativistic electron beam tubes; 2D simulations; azimuthally varying axial magnetic fields; electron phase-space; high-power microwaves; magnetic priming; relativistic magnetron; uniform axial magnetic fields; Computational modeling; EMP radiation effects; Electrons; Magnetic fields; Magnetic noise; Microwave ovens; Radio frequency; Solid modeling; Stability; Student members; High-power microwaves; magnetic priming; magnetron;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2005.845856
