Title :
Computer study of the electron beam emittance in a grid-controlled gun
Author_Institution :
JCS "NIIEFA", St. Petersburg, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
The triode type gun is intended for an rf accelerator with an injection energy of 50 keV. An oxide cathode of 8 mm diameter is used in the source. The cathode current is limited by the space charge and is controlled with the voltage applied to the grid electrode. The grid meshes are 0.6× 0.6 mm in size. The results of the beam self-consistent dynamics simulation are presented. The grid voltage dependence of the emittance has been studied.
Keywords :
electron beams; electron emission; electron guns; electron sources; linear accelerators; triodes; RF accelerator; beam self-consistent dynamics simulation; cathode current; electron beam emission; electron volt energy 50 keV; grid controlled gun; grid electrode; grid mesh; grid voltage dependence; oxide cathode; size 0.6 mm; size 8 mm; space charge; triode type gun; Cathodes; Electric potential; Focusing; Geometry; Lenses; Radio frequency;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2014 Tenth International
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-5770-5
DOI :
10.1109/IVESC.2014.6892109
