Versatile FEM of high efficiency and high spectral purity

Author

Eichenbaum, A.L. ; Abramovich, Amir ; Arbel, M. ; Gilutin, L. ; Gover, A. ; Kleinman, H. ; Pinhasi, Y. ; Volkovich, S. ; Yakover, I.M.

Author_Institution

Fac. of Eng., Tel Aviv Univ., Israel

fYear

1996

Firstpage

180

Lastpage

183

Abstract

At Tel Aviv University we have developed and are performing research on a unique free electron maser (FEM), utilizing a traveling wave prebuncher which can operate at any frequency in the FEM´s frequency band. By e-beam prebunching at or near a desired oscillator eigenfrequency we force the oscillator to operate at that particular eigenfrequency. We can select operation at an eigenfrequency leading to the highest efficiency of operation. The prebunching level and the operating eigenfrequency can be varied. With a high level of prebunching the radiated signal buildup time of the desired frequency is greatly shortened, thus, increasing considerably, the energy conversion efficiency in pulsed operation

Keywords

free electron lasers; masers; millimetre wave amplifiers; millimetre wave lasers; millimetre wave oscillators; travelling wave tubes; FEM; MM-waves; Tel Aviv University; efficiency; electron-beam prebunching; energy conversion efficiency; free electron maser; oscillator eigenfrequency; pulsed operation; radiated signal buildup time; spectral purity; traveling wave prebuncher; Apertures; Couplings; Frequency; Gain; Oscillators; Reflection; Resonance; Undulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Electronics Engineers in Israel, 1996., Nineteenth Convention of

Conference_Location

Jerusalem

Print_ISBN

0-7803-3330-6

Type

conf

DOI

10.1109/EEIS.1996.566924

Filename

566924