Title :
Design of a sheet-beam electron gun for a Ka-band microfabricated traveling-wave tube
Author :
Shaomeng Wang ; Chen Zhao ; Aditya, Sheel
Author_Institution :
Satellite Res. Center, Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A novel design of a sheet beam electron gun, suitable for a Ka-band microfabricated traveling-wave tube (TWT), is described in this paper. Simulations take into account emission from a CNT field-emitter array (FEA) and the formation of the sheet beam. The rectangular FEA cathode of 2250×300 μm2 area produces a 10 mA sheet electron beam which is compressed into a 350×150 μm2 area. The configuration of the focusing electrodes and the anode is suitable for microfabrication. For an anode voltage of 3.7 KV, the presented simulation results show a uniform beam at the anode output.
Keywords :
anodes; cathodes; electron beams; electron guns; field emitter arrays; microfabrication; travelling wave tubes; CNT field-emitter array; Ka-band microfabricated traveling-wave tube; anode; current 10 mA; electron beam; focusing electrodes; microfabrication; rectangular FEA cathode; sheet-beam electron gun; voltage 3.7 kV; Anodes; Cathodes; Electron tubes; RNA; electron gun; micro-fabrication; sheet electron beam; travelling-wave tube;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223757
