Cryogenic radiation effects on electric insulators
Conference
·
OSTI ID:6058207
The radiation allowable at the superconducting magnets of a fusion reactor may be limited by the radiation tolerance of organic and composite electrical insulators. The allowable dose at the magnets will in turn influence the thickness of shielding necessary and therefore the size of the magnets. Epoxy-based, polyamide, and polyimide insulators chosen from superconducting magnet practice were irradiated in liquid helium to a total gamma dose of 20 MGy (2 x 10/sup 9/ rd). Electrical resistivity was measured during and after irradiation and electrical breakdown was measured after irradiation. Mechanical properties measured at 77 K after irradiation included flexure strength, shear strength (of adhesives between copper), and compressive strength.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6058207
- Report Number(s):
- CONF-790125-38
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202* -- Fusion Power Plant Technology-- Magnet Coils & Fields
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EPOXIDES
EQUIPMENT
MAGNETS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202* -- Fusion Power Plant Technology-- Magnet Coils & Fields
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EPOXIDES
EQUIPMENT
MAGNETS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS