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A reflexing electron microwave amplifier for rf particle accelerator applications

Published online by Cambridge University Press:  09 March 2009

M. V. Fazio  and
R. F. Hoeberling
M. V. Fazio
Affiliation:
At-5, MS-H827 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
R. F. Hoeberling
Affiliation:
At-5, MS-H827 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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Abstract

The evolution of rf-accelerator technology toward high-power, high-current, lowemittance beams produces an ever-increasing demand for efficient, very high power microwave power sources. The present klystron technology has performed very well but is not expected to produce reliable gigawatt peak-power units in the 1- to 10-GHz regime. Further major advancements must involve other types of sources. The reflexing-electron class of sources can produce microwave powers at the gigawatt level and has demonstrated operation from 800-MHz to 40-GHz. The pulse length appears to be limited by diode closure, and reflexing-electron devices have been operated in a repetitively pulsed mode. A design is presented for a reflexing electron microwave amplifier that is frequency and phase locked. In this design, the generated microwave power can be efficiently coupled to one or several accelerator loads. Frequency and phase-locking capability may permit parallel-source operation for higher power. The low-frequency (500-MHz to 10-GHz) operation at very high power required by present and proposed microwave particle accelerators makes an amplifier, based on reflexing electron phenomena, a candidate for the development of new accelerator power sources.

Type
Research Article
Information
Laser and Particle Beams , Volume 6 , Issue 3 , August 1988 , pp. 613 - 620
Copyright
Copyright © Cambridge University Press 1988

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