Nb sub(3)Sn conductors for high energy physics and fusion applications

There are two basic approaches to internal-tin Nb sub(3)Sn conductor design. 1) Maintaining individually separated filaments after reaction and 2) allowing groups of filaments to bridge, while, at the same time ensuring that the overall size of the agglomerate is limited in order to control the effe...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2001-03, Vol.11 (1), p.3688-3691
Main Authors: Pyon, Taeyoung, Gregory, E
Format: Article
Language:English
Subjects:
Agglomeration
Categories
Channels
Conductors
Energy use
Filaments
High field magnets
Superconductivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:There are two basic approaches to internal-tin Nb sub(3)Sn conductor design. 1) Maintaining individually separated filaments after reaction and 2) allowing groups of filaments to bridge, while, at the same time ensuring that the overall size of the agglomerate is limited in order to control the effective filament diameter (d sub(eff)) and losses. In this paper we discuss recent developments in both of these conductor types. The strand for the Levitated Dipole Experiment (LDX) is illustrative of type 1, and the most significant development in this area Is a react-and-wind conductor soldered into a copper channel. In category 2, conductors with higher current density capabilities have been made primarily for High Energy Physics applications, although they can also be used in small high field magnets. Many of these conductors have much higher losses than the other type. Some of the factors controlling piece length, critical current density (J sub(c)) and losses are discussed for a series of different designs, filament sizes and compositions
ISSN:1051-8223
DOI:10.1109/77.919865