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Proceedings Paper

Experiments With A 35 GHz Cyclotron Autoresonance Maser (CARM) Amplifier
Author(s): G. Bekefi; A. DiRienzo; C. Leibovitch; B. Danly
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Paper Abstract

Studies of a cyclotron autoresonance maser (CARM) are presented. The measurements are carried out at a frequency of 35 GHz using a mildly relativistic electron beam of 1.5 MeV energy and a 200 A current. The beam is generated by a field emission electron gun followed by an emittance selector that removes the outer, hot electrons. The entire system length (~2.0 meter), including the field emission gun, is immersed in a uniform solenoidal guide field of 7 kG. Perpendicular energy is imparted to the electrons by means of a bifilar helical wiggler having a period of 7 cm and a length of 56 cm. The cyclotron radiation is generated in a 1 meter long wiggler free region. Initial superradiant measurements give a small signal gain of 91 dB/m. Experiments are also underway in which a 35 GHz, 100 kW magnetron is used as the driver for our CARM amplifier.

Paper Details

Date Published: 18 November 1988
PDF: 3 pages
Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1988); doi: 10.1117/12.978523
Show Author Affiliations
G. Bekefi, Massachusetts Institute of Technology (United States)
A. DiRienzo, Massachusetts Institute of Technology (United States)
C. Leibovitch, Massachusetts Institute of Technology (United States)
B. Danly, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 1039:
13th Intl Conf on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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