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Development and performance of a 2.9 Tesla dipole magnet using high-temperature superconducting CORC® wires

Journal Article · · Superconductor Science and Technology
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  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab), Applied Superconductivity Center
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); The Ohio State Univ., Columbus, OH (United States)
  5. Advanced Conductor Technologies, Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
Although the high-temperature superconducting (HTS) REBa2Cu3Ox (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® canted cosθ 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® wire on machined metal mandrels. The wire had 30 commercial REBCO tapes from SuperPower Inc. each 2 mm wide with a 30 µm 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-2, allowing reliable quench detection and magnet protection. The C2 magnet represents another successful step towards the development of high-field accelerator magnet and CORC® conductor technologies. The test results highlighted two development needs: continue improving the performance and flexibility of CORC® wires and develop the capability to identify locations of first onset of flux-flow voltage.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)
Grant/Contract Number:
AC02-05CH11231; SC0014009; SC0015775
OSTI ID:
1833988
Alternate ID(s):
OSTI ID: 1734586
OSTI ID: 23135652
Journal Information:
Superconductor Science and Technology, Journal Name: Superconductor Science and Technology Journal Issue: 1 Vol. 34; ISSN 0953-2048
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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