A Feasibility Study of High-Strength Bi-2223 Conductor for High-Field Solenoids.

Autor: Godeke A; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Abraimov DV; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Arroyo E; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Barret N; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Bird MD; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Francis A; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Jaroszynski J; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Kurteva DV; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Markiewicz WD; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Marks EL; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Marshall WS; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., McRae DM; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Noyes PD; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Pereira RC; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Viouchkov YL; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., Walsh RP; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com., White JM; National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
Jazyk: angličtina
Zdroj: Superconductor science & technology [Supercond Sci Technol] 2017 Mar; Vol. 30 (3). Date of Electronic Publication: 2017 Jan 30.
DOI: 10.1088/1361-6668/aa5582
Abstrakt: We performed a feasibility study on a high-strength Bi 2- x Pb x Sr 2 Ca 2 Cu 3 O 10- x (Bi-2223) tape conductor for high-field solenoid applications. The investigated conductor, DI-BSCCO Type HT-XX, is a pre-production version of Type HT-NX, which has recently become available from Sumitomo Electric Industries (SEI). It is based on their DI-BSCCO Type H tape, but laminated with a high-strength Ni-alloy. We used stress-strain characterizations, single- and double-bend tests, easy- and hard-way bent coil-turns at various radii, straight and helical samples in up to 31.2 T background field, and small 20-turn coils in up to 17 T background field to systematically determine the electro-mechanical limits in magnet-relevant conditions. In longitudinal tensile tests at 77 K, we found critical stress- and strain-levels of 516 MPa and 0.57%, respectively. In three decidedly different experiments we detected an amplification of the allowable strain with a combination of pure bending and Lorentz loading to ≥ 0.92% (calculated elastically at the outer tape edge). This significant strain level, and the fact that it is multi-filamentary conductor and available in the reacted and insulated state, makes DI-BSCCO HT-NX highly suitable for very high-field solenoids, for which high current densities and therefore high loads are required to retain manageable magnet dimensions.
Databáze: MEDLINE
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