Title :
Electron gun for powerful large orbit gyrotron
Author :
Manuilov, V.N. ; Idehara, T. ; Watanabe, O. ; Kamada, M. ; Agusu, La ; Yatsui, K. ; Jiang, Wiehua
Author_Institution :
Res. Center for Dev. of Far-Infrared Region, Fukui Univ., Japan
Abstract :
One of the most important tasks in high power electronics is the development of RF sources in the submillimeter wavelength region. One of the most promising sources is the large orbit gyrotron (LOG). But the efficiency of LOGs is rather small - usually a few percent only. So, to obtain a high enough value of the output power, it is necessary to use a powerful electron beam as the RF radiation energy source. Recently in the Nagaoka Institute of Technology, a Marx generator with accelerating voltage Uo of about 400 kV was developed. The combination of such a power supply with a pulse magnet providing an operating magnetic field of 12 T opens the possibility of a LOG to reach the border of the Terahertz frequency range with output power above 1-2 MW. This paper presents a project designing an electron beam formation system with the mentioned power supply. The operation of a LOG at third to fifth cyclotron harmonics is also discussed.
Keywords :
cyclotron resonance; electron guns; gyrotrons; pulsed power supplies; submillimetre wave tubes; 1 to 2 MW; 12 T; 400 kV; LOG efficiency; Marx generator accelerating voltage; RF radiation energy source; electron beam formation system; gyrotron electron gun; large orbit gyrotron; operating magnetic field; pulse magnet; submm-wave generation; third to fifth cyclotron harmonics; Acceleration; Electron beams; Gyrotrons; Magnetic fields; Power electronics; Power generation; Pulsed power supplies; Radio frequency; Submillimeter wave technology; Voltage;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves, 2004. MSMW 04. The Fifth International Kharkov Symposium on
Print_ISBN :
0-7803-8411-3
DOI :
10.1109/MSMW.2004.1345977