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Proceedings Paper

Microwave and electron-beam diagnostics of a rectangular cross section gyrotron
Author(s): Reginald L. Jaynes; Ronald M. Gilgenbach; Jonathan M. Hochman; J. I. Rintamaki; William E. Cohen; Christopher W. Peters; Yue Ying Lau; Thomas A. Spencer
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Paper Abstract

Diagnostic experiments and operation of multi-megawatt gyrotrons utilizing rectangular cross-section resonant cavities are currently under investigation. The goal of the experiments is to achieve gyrotron generation of high power- long pulse microwaves. A rectangular cross-section resonant cavity has the advantage that it is a linearly polarized source of microwaves. The output microwaves have a high degree of polarization control by changing the magnetic field in the interaction region. Diagnostics include cold tests of the microwave cavity, heterodyne mixer measurements of operating frequencies, and beam alpha (Vperp/Vparallel)/spatial distribution measurements using glass witness plates. Operation at microwave powers greater than 10 MW and high polarization power ratios (vertical/horizontal) greater than 100 have been observed in experiments. The electron beam was produced by MELBA (Michigan electron long beam accelerator) with the following parameters: -0.8 MV, 1 - 10 kA diode current, 0.5 - 1.0 microsecond pulse length.

Paper Details

Date Published: 3 October 1997
PDF: 8 pages
Proc. SPIE 3158, Intense Microwave Pulses V, (3 October 1997); doi: 10.1117/12.284021
Show Author Affiliations
Reginald L. Jaynes, Univ. of Michigan (United States)
Ronald M. Gilgenbach, Univ. of Michigan (United States)
Jonathan M. Hochman, Univ. of Michigan (United States)
J. I. Rintamaki, Univ. of Michigan (United States)
William E. Cohen, Univ. of Michigan (United States)
Christopher W. Peters, Univ. of Michigan (United States)
Yue Ying Lau, Univ. of Michigan (United States)
Thomas A. Spencer, Air Force Phillips Lab. (United States)


Published in SPIE Proceedings Vol. 3158:
Intense Microwave Pulses V
Howard E. Brandt, Editor(s)

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