400-MHz/60-mm All-REBCO Nuclear Magnetic Resonance Magnet: Magnet Design

We present a design of a 400-MHz/60-mm all-REBCO nuclear magnetic resonance (NMR) magnet (H400) that consists of a stack of 56 double-pancake (DP) coils. With the multiwidth no-insulation technique incorporated, DP coils were wound with REBCO tapes of five different widths, i.e., 4.1, 5.1, 6.1, 7.1,...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2016-06, Vol.26 (4), p.1-4
Main Authors: Kim, Kwang Lok, Yoon, Sangwon, Cheon, Kyekun, Kim, Jaemin, Lee, Hunju, Lee, SangGap, Kim, Dong Lak, Hahn, Seungyong
Format: Article
Language:English
Subjects:
Coils
High-temperature superconductors
Multi-Width
Nickel
NMR
No-Insulation
Nuclear magnetic resonance
REBCO Magnet
Superconducting magnets
Wounds
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Summary:We present a design of a 400-MHz/60-mm all-REBCO nuclear magnetic resonance (NMR) magnet (H400) that consists of a stack of 56 double-pancake (DP) coils. With the multiwidth no-insulation technique incorporated, DP coils were wound with REBCO tapes of five different widths, i.e., 4.1, 5.1, 6.1, 7.1, and 8.1 mm; DP coils placed at and near the magnet midplane were wound with the narrowest (4.1 mm wide) REBCO tapes, whereas those with progressively wider tapes were placed toward the top and bottom of the magnet, where the "perpendicular field B ⊥ " is at its peak within the magnet. The magnet was designed to be operated under a conduction cooling environment at 20 K. Once successfully completed, the magnet will be installed as an NMR user facility in the Korea Basic Science Institute. Basic magnet performances and major technical challenges were discussed.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2015.2509172