• Marchevsky, Maxim
• Myers, Cory S.
• Prestemon, Soren O.
• Taylor, Jordan
• Weiss, Jeremy
• Abraimov, Dmytro
• Francis, Ashleigh
• Dimarco, Joseph
• Dietderich, Daniel R.
• Brouwer, Lucas
• Caspi, Shlomo
• Bogdanof, Timothy J.
• Turqueti, Marcos
• Teyber, Reed
• Ghiorso, William B.
• Arbelaez, Diego
• Gourlay, Stephen A.
• Higley, Hugh C.
• Maruszewski, Maxwell A.
• Wang, Xiaorong

Abstract

<jats:title>Abstract</jats:title><jats:p>Although the high-temperature superconducting (HTS) REBa<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub><jats:italic>x</jats:italic></jats:sub> (REBCO, RE–rare earth elements) material has a strong potential to enable dipole magnetic fields above 20 T in future circular particle colliders, the magnet and conductor technology needs to be developed. As part of an ongoing development to address this need, here we report on our CORC<jats:sup>®</jats:sup> canted cos<jats:italic>θ</jats:italic> magnet called C2 with a target dipole field of 3 T in a 65 mm aperture. The magnet was wound with 70 m of 3.8 mm diameter CORC<jats:sup>®</jats:sup> wire on machined metal mandrels. The wire had 30 commercial REBCO tapes from SuperPower Inc. each 2 mm wide with a 30 <jats:italic>µ</jats:italic>m thick substrate. The magnet generated a peak dipole field of 2.91 T at 6.290 kA, 4.2 K. The magnet could be consistently driven into the flux-flow regime with reproducible voltage rise at an engineering current density between 400–550 A mm<jats:sup>−2</jats:sup>, allowing reliable quench detection and magnet protection. The C2 magnet represents another successful step towards the development of high-field accelerator magnet and CORC<jats:sup>®</jats:sup> conductor technologies. The test results highlighted two development needs: continue improving the performance and flexibility of CORC<jats:sup>®</jats:sup> wires and develop the capability to identify locations of first onset of flux-flow voltage.</jats:p>

Topics

• density
• current density
• wire
• rare earth metal