Title :
Axially non-uniform beam-tunnel geometries preserving the cross-section of a sheet beam
Author :
Loukopoulos, K.D. ; Vomvoridis, J.L.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
fDate :
27 Sept.-1 Oct. 2004
Abstract :
In this work, we study in a system with weak axial non-uniformity, the required shape of the beam-tunnel boundary, so that the cross-section of a non-axisymmetric electron beam is preserved, in spite of the E×B drift. For a beam with elliptic cross section (including the limit of a sheet beam), the Poisson equation has been solved to first order in the non-uniformity, thus defining the suitable shape of the beam tunnel boundary.
Keywords :
Poisson equation; electric fields; electron beams; magnetic fields; Poisson equation; beam tunnel boundary; electric fields; elliptic cross section; magnetic fields; nonaxisymmetric electron beam; nonuniform beam tunnel geometry; sheet beam; Boundary conditions; Coils; Computational geometry; Electron beams; Electrostatics; Gyrotrons; Laplace equations; Magnetostatics; Poisson equations; Shape;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422261
