Irradiation imposed degradation of the mechanical and electrical properties of electrical insulation for future accelerator magnets

Journal Article · Mon Jan 27 04:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4860620· OSTI ID:22264038

Polinski, J.; Chorowski, M.; Bogdan, P.; Strychalski, M. ^[1]; Rijk, G. de ^[2]

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1. Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw (Poland)
2. European Organization for Nuclear Research CERN, 1211 Geneva (Switzerland)

Future accelerators will make extensive use of superconductors made of Nb{sub 3}Sn, which allows higher magnetic fields than NbTi. However, the wind-and-react technology of Nb{sub 3}Sn superconducting magnet production makes polyimide Kapton® non applicable for the coils' electrical insulation. A Nb{sub 3}Sn technology compatible insulation material should be characterized by high radiation resistivity, good thermal conductivity, and excellent mechanical properties. Candidate materials for the electrical insulation of future accelerator's magnet coils have to be radiation certified with respect to potential degradation of their electrical, thermal, and mechanical properties. This contribution presents procedures and results of tests of the electrical and mechanical properties of DGEBA epoxy + D400 hardener, which is one of the candidates for the electrical insulation of future magnets. Two test sample types have been used to determine the material degradation due to irradiation: a untreated one (unirradiated) and irradiated at 77 K with 11 kGy/min intense, 4MeV energy electrons beam to a total dose of 50 MGy.

• OSTI ID: 22264038
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1574; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCELERATORS
ELECTRICAL INSULATION
ELECTRICAL PROPERTIES
ELECTRON BEAMS
IRRADIATION
MAGNET COILS
MAGNETIC FIELDS
MECHANICAL PROPERTIES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTORS
THERMAL CONDUCTIVITY