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Updated: Sep 28, 2025

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13C-Optimized HTS NMR RF Coil Design at 21.1 T
O Sanati1, A S Edison1, L A Hornak1
1University of Georgia, Athens, GA, 30602, USA.
Abstract:
We present the design of a novel high-temperature superconductor double-sided racetrack resonator for a 13C optimized nuclear magnetic resonance (NMR) transmitter/receiver coil. The coils operate in a 21.1 T magnet and accommodate a 3 mm × 6.2 mm cross-section rectangular sample tube. The design includes the incorporation of revised finger lengths to improve the homogeneity of current density across the fingers, a new laser trimming approach for adjusting the resonance frequency, and improved ability to shift higher-order modes for suitability in 1H/13C NMR probes. Resonator design methodology, simulations and experimental results are presented.
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