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Updated: Sep 26, 2025
10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
11.5K
Application of Counter-wound Multi-arm Spirals in HTS Resonator Design
Taylor L Johnston1, Arthur S Edison2, Vijaykumar Ramaswamy3
1National High Magnetic Laboratory, Tallahassee, FL 32310, USA and also with the Department of Chemistry and Biochemistry, Florida State University.
IEEE Transactions on Applied Superconductivity : a Publication of the IEEE Superconductivity Committee
|April 22, 2022
Summary
High temperature superconducting (HTS) resonators enhance nuclear magnetic resonance (NMR) sensitivity. Novel multi-arm spiral HTS resonators show potential for stronger excitation fields, particularly for carbon-13 (13C) NMR applications.
Area of Science:
- Magnetic Resonance Spectroscopy
- Superconducting Materials Science
Background:
- High temperature superconducting (HTS) resonators significantly improve nuclear magnetic resonance (NMR) probe sensitivity.
- Traditional HTS resonator designs struggle to generate the strong excitation fields needed for nuclei like carbon-13 (13C).
Purpose of the Study:
- To investigate double-sided, counter-wound multi-arm spiral HTS resonators.
- To enhance the excitation field strength for 13C nuclei in NMR.
Main Methods:
- Computational simulations comparing multi-arm spiral HTS resonators with traditional spiral designs.
- Preliminary experimental testing of a two-arm multi-arm spiral HTS resonator.
Main Results:
- Simulations indicate a more uniform current distribution in multi-arm spiral HTS resonators compared to similar spiral designs.
- Preliminary tests suggest a potential for stronger excitation fields from the multi-arm spiral resonator.
Conclusions:
- Multi-arm spiral HTS resonators offer a promising design for improving excitation field strength in NMR.
- This advancement could benefit NMR applications requiring strong fields, such as 13C spectroscopy.
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