MgB2/Cu Racetrack Coil: Winding and Transport Testing

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dc.creatorSumption, M. D.
dc.creatorBhatia, M.
dc.creatorRindfleisch, M.
dc.creatorPhillips, J.
dc.creatorTomsic, M.
dc.creatorCollings, E. W.
dc.date2004-10-18
dc.date.accessioned2026-07-07T03:01:32Z
dc.date.available2026-07-07T03:01:32Z
dc.descriptionA racetrack coil using MgB2/Cu strand has been fabricated and tested for transport current density at 4.2 K in self field. The monofilamentary strand was 1.0 mm OD and insulated with S-glass braid. Eighty turns of strand (42 m) were wound onto a stainless steel former with outer dimensions 25 cm x 10 cm x 0.86 cm. The resulting racetrack coil was heat treated at 675C for 30 minutes in flowing Ar. The strand, with a superconducting fraction of 26%, occupied 49% of the total coil pack cross sectional area. The coil Ic at 4.2 K and self field was 120 A (using a 1 microvolt/cm criterion). This led to a Jc,sc (across the whole coil) of 6.12 x 10^4 A/cm2, a Je in the wire of 1.59 x 10^4 A/cm2, and an overall winding Je of 7.9 x 10^3 A/cm2 at 4.2 K in self field. The n-values ranged from 17 to 56.
dc.description20 pages, Five Figs, 2 tables
dc.identifierhttps://arxiv.org/abs/cond-mat/0410450
dc.identifierhttp://arxiv.org/abs/cond-mat/0410450
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25087
dc.subjectSuperconductivity
dc.titleMgB2/Cu Racetrack Coil: Winding and Transport Testing
dc.typetext

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