Versatile e-beam prebuncher for FEMs and other high power beam devices

A. L. Eichenbaum, H. Kleinman, M. Arbel, A. Gover

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Beam bunching is employed in microwave tubes, FEMs and in other devices. We shall characterize and point out the advantages of using a traveling wave type prebuncher in a table-top compact FEM, which operates successfully at Tel-Aviv University in C-band and for FEMs operating anywhere in the microwave or mm wave range. Our prebuncher utilizes the e-gun and the first 2 "amplifier" sections of a 3-section Traveling Wave Tube (TWT). The 3rd "output" section was severed; an adopting flange was added to permit mounting and alignment of the prebuncher with the FEM resonator. We shall characterize the density modulation of the e-beam exiting from the prebuncher as a function of the RF power input to the prebuncher and as a function of operating frequency. This characterization is made possible by scaling from data of small signal gain, saturation gain, power output vs. power input which was measured on the 3 section TWT for a large frequency range. From this measured data, from the knowledge of the prebuncher operating parameters and from existing information regarding the behavior of TWT bunched beams in the saturation region a good estimate of density modulation vs. Input power and frequency is obtained for our prebuncher.

Original languageEnglish
Title of host publicationBEAMS 1998 - Proceedings of the 12th International Conference on High-Power Particle Beams
EditorsJoseph Shiloh, Meir Markovitis
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages728-731
Number of pages4
ISBN (Electronic)0780342879, 9780780342873
DOIs
StatePublished - 1998
Event12th International Conference on High-Power Particle Beams, BEAMS 1998 - Haifa, Israel
Duration: 12 Jun 1998 → …

Publication series

NameBEAMS 1998 - Proceedings of the 12th International Conference on High-Power Particle Beams
Volume2

Conference

Conference12th International Conference on High-Power Particle Beams, BEAMS 1998
Country/TerritoryIsrael
CityHaifa
Period12/06/98 → …

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