Studies of a pre-bunched backward wave oscillator

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:51777

Alexander, C; Shiffler, D ^[1]

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1. Univ. of New Mexico, Albuquerque, NM (United States). Electrical and Computer Engineering Dept.

One means of enhancing the performance of many electron based, vacuum rf devices is to pre-bunch, or pre-modulate, the electron beam. At the University of New Mexico the authors have begun to study the physics and operation of a pre-bunched backward wave oscillator (BWO). A uniform slow wave structure consisting of a rippled wall waveguide forms the BWO. The slow wave structure is similar to that currently in use in a series of experiments at the Pulsed Power and Plasma Physics Laboratory at the University of New Mexico. Cavities actively driven at the BWO frequency and sub-harmonics of the BWO frequency provide pre-bunching of the electrons. They utilize a single particle model and the particle-in-cell code MAGIC to study operation of both the pre-bunching cavities and the BWO. In particular, they analyze the frequency response, output power and time evolution of the electromagnetic fields. Using these figures of merit, their computations are compared to an existing experiment at the University of New Mexico.

• OSTI ID: 51777
• Report Number(s): CONF-940604--; ISBN 0-7803-2006-9
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BACKWARD WAVE TUBES
BEAM BUNCHING
CAVITY RESONATORS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
M CODES
MATHEMATICAL MODELS
OPERATION
RESEARCH PROGRAMS