Title :
Experiment for cusptron microwave tube
Author :
Choe, J.Y. ; Boulais, K. ; Uhm, H.S. ; Namkung, W.
Author_Institution :
US Naval Surface Warfare Center, Silver Spring, MD, USA
Abstract :
The cusptron microwave tube is a compact high-power device using the harmonic frequency generating scheme via the negative mass instability with an axis-rotating electron beam. Both the high and low harmonic modes of operation in the oscillator configuration have been successfully demonstrated, and the beam dynamics have been studied to improve beam quality. This device was shown to have superior quality in terms of mode purity and frequency stability. A program is now in preparation for conversion of the cusptron into an amplifier configuration. It is concluded that off-centering due to the unbalanced cusp is very harmful and that the staged field profile featuring a balanced cusp and an adiabatic compression phase is desirable
Keywords :
frequency stability; microwave amplifiers; microwave tubes; adiabatic compression phase; amplifier; axis-rotating electron beam; balanced cusp; beam dynamics; beam quality; cusptron microwave tube; frequency stability; harmonic frequency generating scheme; harmonic modes; mode purity; negative mass instability; Blades; Coupling circuits; Cyclotrons; Electron beams; Magnetic circuits; Magnetic fields; Magnetic separation; Radio frequency; Spectral analysis; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.72994
