title: A Feasibility Study of High-Strength Bi-2223 Conductor for High-Field Solenoids.
abstract: We performed a feasibility study on a high-strength Bi2-xPbxSr2Ca2Cu3O10-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.
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: A
authors.initials: A
authors.lastname: Godeke
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: D V
authors.initials: DV
authors.lastname: Abraimov
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: E
authors.initials: E
authors.lastname: Arroyo
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: N
authors.initials: N
authors.lastname: Barret
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: M D
authors.initials: MD
authors.lastname: Bird
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: A
authors.initials: A
authors.lastname: Francis
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: J
authors.initials: J
authors.lastname: Jaroszynski
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: D V
authors.initials: DV
authors.lastname: Kurteva
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: W D
authors.initials: WD
authors.lastname: Markiewicz
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: E L
authors.initials: EL
authors.lastname: Marks
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: W S
authors.initials: WS
authors.lastname: Marshall
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: D M
authors.initials: DM
authors.lastname: McRae
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: P D
authors.initials: PD
authors.lastname: Noyes
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: R C P
authors.initials: RC
authors.lastname: Pereira
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: Y L
authors.initials: YL
authors.lastname: Viouchkov
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: R P
authors.initials: RP
authors.lastname: Walsh
authors.affiliation: National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA, arno.godeke@varian.com.
authors.forename: J M
authors.initials: JM
authors.lastname: White