Heat treatment study of Nb/sub 3/Sn strands for the Fermilab´s high field dipole model

Author

Barzi, E. ; Boffo, C. ; Limon, P.J. ; Ozelis, J.P. ; Yamada, R. ; Zlobin, A.V. ; Gregory, E. ; Pyon, T. ; Wake, M.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

Volume

10

Issue

1

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

1000

Lastpage

1003

Abstract

Fermilab is developing high field superconducting dipole magnets based on Nb/sub 3/Sn for a post-LHC very large hadron collider (VLHC). The first prototype is a 1 meter long two-layer shell-type (cos-theta) coil with a nominal field of 11 T. A keystoned Rutherford-type cable made of 28 Nb/sub 3/Sn strands of 1 mm in diameter is used. The development of high J/sub c/ multifilamentary Nb/sub 3/Sn strands with low magnetization is an important step of this program. To achieve this goal, strand R&D is actively pursued by Fermilab and IGC using the internal tin process. Conductor designs, heat treatment studies, and results of measurements, including I/sub c/, n-value, RRR, magnetization, and chemical analyses, are presented.

Keywords

heat treatment; niobium alloys; superconducting magnets; tin alloys; type II superconductors; 1 m; Fermilab´s high field dipole model; Nb/sub 3/Sn; Nb/sub 3/Sn strands; high field superconducting dipole magnets; internal tin process; keystoned Rutherford-type cable; very large hadron collider; Heat treatment; Large Hadron Collider; Magnetization; Multifilamentary superconductors; Niobium; Prototypes; Superconducting cables; Superconducting coils; Superconducting magnets; Tin;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.828400

Filename

828400