Test Results of CCT1—A 2.4 T Canted-Cosine-Theta Dipole Magnet

Author

Caspi, S. ; Brouwer, L.N. ; Lipton, T. ; Hafalia, A. ; Prestemon, S. ; Dietderich, D.R. ; Felice, H. ; Wang, Xiongfei ; Rochepault, E. ; Godeke, A. ; Gourlay, S. ; Marchevsky, M.

Author_Institution

Lawrence Berkeley Nat. Lab., Berkeley, CA, USA

Volume

25

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

4

Abstract

A two-layer Canted-Cosine-Theta (CCT) superconducting dipole magnet was built and tested. The magnet´s unique mandrel design uses machined channels and spars to guide the windings, intercept Lorentz forces, and circumvent tangential stress accumulation. The CCT magnet design provides a “near-perfect” current density distribution and requires minimal coil prestress. The CCT magnet design, with these inherent features, makes it a desirable option for a high field accelerator magnet. A two layer dipole (CCT1) using NbTi cable and a 50.8-mm clear bore was built and tested generating a 2.4 T dipole field. We report on the winding experience, measured field quality and quench history.

Keywords

current density; niobium compounds; superconducting magnets; 2.4 T canted-cosine-theta dipole magnet; CCT1; Lorentz forces; NbTi; high field accelerator magnet; magnet design; measured field quality; near-perfect current density distribution; quench history; superconducting dipole magnet; tangential stress accumulation; two layer dipole; winding experience; Conductors; Harmonic analysis; Magnetic field measurement; Magnetomechanical effects; Superconducting coils; Superconducting magnets; CCT; Canted-Cosine-Theta; Canted-Cosine-Theta (CCT); dipole; magnet; superconducting;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2014.2369061

Filename

6960088