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Proceedings Paper

Proton Maser
Author(s): D L Ensley
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Paper Abstract

New calculations confirm the ability of a random apriori initial-phase proton beam to drive a simple, single stage microwave cavity maser or transit-time oscillator (TTO) to saturation conversion efficiencies of = 11%. The required initial TE011 mode field can be provided from beam ramp-up bandwidth or excitation to a low level from an external source. A saturation field of 45 tesla, output power of .2TW (power density 2.2x1013 W cm 2) is calculated using an electron insulation field of 10 tesla and a 3 Mev, 400 Ka/cm2 beam. (Addition of a "catcher" cavity can increase overall efficiency to = 15%.) Results are compared to those for an electron beam of the same energy and geometry, and it is shown that proton beams can potentially provide a three order of magnitude increase in over-all microwave power production density over that obtainable from electron beam TTO's.

Paper Details

Date Published: 9 May 1988
PDF: 8 pages
Proc. SPIE 0873, Microwave and Particle Beam Sources and Propagation, (9 May 1988); doi: 10.1117/12.965088
Show Author Affiliations
D L Ensley, California Applied Physics (United States)

Published in SPIE Proceedings Vol. 0873:
Microwave and Particle Beam Sources and Propagation
Norman Rostoker, Editor(s)

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