期刊
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
卷 34, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6668/abc2a5
关键词
REBCO; dipole accelerator magnet; CORC®
资金
- U.S. Magnet Development Program through Director, Office of Science, Office of High Energy Physics
- Office of Fusion Energy Sciences of the US Department of Energy [DEAC02-05CH11231]
- US Department of Energy [DE-SC0014009, DE-SC0015775]
- DOE Office of Science Graduate Student Research Program, Advanced Technology Research and Development in High Energy Physics
- U.S. Department of Energy (DOE) [DE-SC0014009, DE-SC0015775] Funding Source: U.S. Department of Energy (DOE)
Although high-temperature superconducting material has the potential for high magnetic field applications in future particle colliders, further development in magnet and conductor technology is needed. The study presented the successful development of a C2 magnet using CORC(R) wire, showing high dipole field capabilities and reliable performance. Test results highlighted the need for improving the performance of CORC(R) wires and developing early detection capabilities for flux-flow voltage onset locations.
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(R) canted cos 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(R) wire on machined metal mandrels. The wire had 30 commercial REBCO tapes from SuperPower Inc. each 2 mm wide with a 30 mu 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(-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(R) conductor technologies. The test results highlighted two development needs: continue improving the performance and flexibility of CORC(R) wires and develop the capability to identify locations of first onset of flux-flow voltage.
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