Title :
Study of Low- Voltage Radial Convergent Sheet Electron Optical System
Author :
Shaomeng Wang ; Yubin Gong ; Zhanliang Wang ; Yanyu Wei ; Zhaoyun Duan ; Jinjun Feng ; Qingxiang Liu
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A new kind of radial convergent sheet beam electron optical system, which can be used in low voltage Ka-band radial electron devices, is studied in this paper, including the beam production, transmission, and focus. A novel radial high perveance electron gun is proposed, and its volt-ampere characteristics are obtained by means of simulation. The focusing system using permanent magnet rings is put forward, by which a radial uniform magnetic field can be obtained. With the electron gun and focusing system, a 1600 V, 8 A, and 0.04-mm thickness radial convergent sheet beam was produced, and the simulation result shown that it can pass through a 16-mm × 0.06 -mm radial channel 100%.
Keywords :
electron guns; electron optics; optical focusing; permanent magnets; travelling wave tubes; current 8 A; focusing system; low voltage Ka-band radial electron devices; low voltage radial TWT; low-voltage radial convergent sheet beam electron optical system; permanent magnet rings; radial high perveance electron gun; radial uniform magnetic field; size 0.04 mm; volt-ampere characteristics; voltage 1600 V; Anodes; Cathodes; Electron beams; Electron optics; Focusing; Permanent magnets; Simulation; Convergent; electron gun; permanent magnet; radial sheet electron beam; radial sheet electron beam.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2328619
