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Microwave Absorption by Lossy Ceramic Materials*
Published online by Cambridge University Press: 25 February 2011
Abstract
Microwave energy generated by the electron beam in the superconducting cavities of the Continuous Electron Beam Accelerator Facility (CEBAF) is absorbed by special loads fabricated with a novel lossy ceramic material (AIN-glassy carbon) developed especially for this application. Strict environmental constraints (ultra-high vacuum compatibility, operation at 2 K, brazeability, etc.) are imposed on the materials which can be used. Several other ceramics were sintered with AIN and various minority conductive powders to obtain the desired electrical properties according to the ‘artificial dielectric’ model. Dielectric permittivity data and results of low temperature measurements are reported.
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- Copyright © Materials Research Society 1992
Footnotes
This work was supported by the U.S. Department of Energy under contract DE-AC05-84ER40150
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