Microwave and electron-beam diagnostics of a rectangular cross section gyrotron

Reginald L. Jaynes; Ronald M. Gilgenbach; Jonathan M. Hochman; J. I. Rintamaki; William E. Cohen; Christopher W. Peters; Yue Ying Lau; Thomas A. Spencer

doi:10.1117/12.284021

3 October 1997 Microwave and electron-beam diagnostics of a rectangular cross section gyrotron

Reginald L. Jaynes, Ronald M. Gilgenbach, Jonathan M. Hochman, J. I. Rintamaki, William E. Cohen, Christopher W. Peters, Yue Ying Lau, Thomas A. Spencer

Author Affiliations +

Proceedings Volume 3158, Intense Microwave Pulses V; (1997) https://doi.org/10.1117/12.284021
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

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Reginald L. Jaynes, Ronald M. Gilgenbach, Jonathan M. Hochman, J. I. Rintamaki, William E. Cohen, Christopher W. Peters, Yue Ying Lau, and Thomas A. Spencer "Microwave and electron-beam diagnostics of a rectangular cross section gyrotron", Proc. SPIE 3158, Intense Microwave Pulses V, (3 October 1997); https://doi.org/10.1117/12.284021

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