Fabrication and Test of C3a: A Six-Layer Subscale Canted $\cos \theta$ Dipole Magnet Using High-Temperature Superconducting corc Wires

Abraimov, Dmytro; Arbelaez, Diego; Brouwer, Lucas; Feng, Helen; Ferracin, Paolo; Ghiorso, William B.; Higley, Hugh C.; Juchno, Mariusz; Lin, Andy; Lipton, Thomas; Luo, Linqing; Marchevsky, Maxim; Pong, Ian; Prestemon, Soren O.; Radcliff, Kyle; Fernández, José Luis Rudeiros; Saravanan, Anjana; Shen, Tengming; Teyber, Reed; Turqueti, Marcos; van der Laan, Danko; Wang, Xiaorong; Weiss, Jeremy D.; Wu, Yuxin

doi:10.1109/tasc.2025.3565222

Fabrication and Test of C3a: A Six-Layer Subscale Canted $$\cos \theta$$ Dipole Magnet Using High-Temperature Superconducting corc Wires

Journal Article · Mon Apr 28 00:00:00 EDT 2025 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/tasc.2025.3565222· OSTI ID:2568062

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Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Advanced Conductor Technologies LLC, Boulder, CO (United States)

REBCO coated conductors have a strong potential for high-field magnet applications. The REBCO technology, however, is still in its infancy for accelerator magnet applications. As part of the U.S. Magnet Development Program (MDP), we developed a six-layer canted cos θ dipole magnet, C3a, using CORC® wires developed by Advanced Conductor Technologies LLC. All the layers were wound using a semi-automated winding machine. Three layers of the magnet used CORC® wires containing the SuperPower “AP” REBCO tapes and the remaining layers used the wires containing the “HM” tapes. At 77 K, both kinds of CORC® wires showed 5% to 10% degradation, after bending to a minimum bend radius of 30 or 35 mm, with respect to the self-field critical current measured before winding. At 4.2 K, the magnet reached 9.5 kA at a ramp rate of 9 A s^-1 and generated a dipole field of 1.4 T. Further, the critical current of one layer degraded by 4% after a current transient up to 10.5 kA ramped in an averaged rate of 175 kA s^-1 or 20 T s^-1. We confirmed the HM CORC® wire can carry a higher current than the AP CORC® wire at 4.2 K. The test results of the C3a magnet showed that the fabrication and assembly procedure can be used for the upcoming full-scale C3 magnet.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2568062

Journal Information:: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 6 Vol. 35; ISSN 1051-8223; ISSN 2378-7074; ISSN 1558-2515

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
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Coils
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Current measurement
Dipole magnet
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REBCO
Superconducting magnets
Superconductivity
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Fabrication and Test of C3a: A Six-Layer Subscale Canted $$\cos \theta$$ Dipole Magnet Using High-Temperature Superconducting corc Wires

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