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Microwave absorption by lossy ceramic materials

Technical Report ·
OSTI ID:5096044
; ; ;
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 (AlN-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 AlN 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.
Research Organization:
Southeastern Universities Research Association, Inc., Newport News, VA (United States). Continuous Electron Beam Accelerator Facility
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC05-84ER40150
OSTI ID:
5096044
Report Number(s):
DOE/ER/40150-190; CEBAF-PR--92-015; ON: DE92016963
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ACCELERATORS
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
BEAMS
CAVITY RESONATORS
CERAMICS
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ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
LEPTON BEAMS
MICROWAVE RADIATION
NITRIDES
NITROGEN COMPOUNDS
PARTICLE BEAMS
PHYSICAL PROPERTIES
PNICTIDES
RADIATION EFFECTS
RADIATIONS
RESONATORS
SORPTION
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES