Title :
A simulation study of beam loading in a cavity
Author :
Wilsen, C.B. ; Luginsland, J.W. ; Lau, Y.Y. ; Antonsen, T.M., Jr. ; Chernin, D.P. ; Tchou, P.M. ; Gilgenbach, R.M. ; Ludeking, L.D.
Author_Institution :
Dept. of Nucl. Eng. & Radiol. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
This paper presents a simulation study of beam loading in a cavity using the two-dimensional particle-in-cell code, MAGIC. We vary the beam voltage, the beam current, the degree of current modulation on the DC beam before the beam enters the cavity, and the degree of charge neutralization on the beam. We deduce the beam-loaded quality factor Q and the beam-loaded resonant frequency from a Lorentzian fit of the numerical data on the gap voltage response as a function of the driving frequency.
Keywords :
Q-factor; cavity resonators; Lorentzian fit; MAGIC simulation; cavity structure; electron beam loading; quality factor; resonant frequency; two-dimensional particle-in-cell code; Educational institutions; Electron beams; Microwave devices; Optical modulation; Particle beams; Q factor; Resonant frequency; Space charge; Time factors; Voltage;
Conference_Titel :
Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International
Print_ISBN :
0-7803-7256-5
DOI :
10.1109/IVELEC.2002.999239
