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A 1.3-GHz LTS/HTS NMR Magnet-A Progress Report
Juan Bascuñán1, Seungyong Hahn, Dong Keun Park
1MIT FBML, Cambridge, MA 02139 USA.
IEEE Transactions on Applied Superconductivity : a Publication of the IEEE Superconductivity Committee
|November 15, 2011
Summary
This study details a 600 MHz high-temperature superconducting (HTS) insert (H600) for high-field magnets. The H600 will enable operation at 1.1 GHz and ultimately 1.3 GHz in advanced magnetic resonance imaging (MRI) systems.
Area of Science:
- High-field magnet technology
- Superconducting magnet development
- Magnetic Resonance Imaging (MRI)
Background:
- Development of high-frequency magnets is crucial for advanced MRI.
- Previous phases focused on building high-resolution LTS/HTS magnets.
- The H600 insert is a key component for achieving higher frequencies.
Purpose of the Study:
- To present the design and construction details of a 600 MHz HTS insert (H600).
- To outline the integration of the H600 with existing LTS magnets for higher operating frequencies.
- To detail the materials, winding, and mechanical support for the HTS insert.
Main Methods:
- Fabrication of a 600 MHz HTS insert (H600) using double pancake (DP) windings.
- Utilizing BSCCO-2223 tape and YBCO coated conductor for HTS coils.
- Integration of the HTS insert with a 500 MHz LTS magnet for initial testing and a 700 MHz LTS magnet for final configuration.
Main Results:
- The H600 insert comprises two concentric stacks of DPs wound with BSCCO-2223 and YBCO.
- Successful integration with a 500 MHz LTS magnet to achieve 1.1 GHz operation.
- Test results for individual DPs in liquid nitrogen (LN2) are presented.
Conclusions:
- The H600 HTS insert is a viable component for achieving ultra-high frequencies in MRI magnets.
- The successful construction and testing pave the way for a 1.3 GHz LTS/HTS magnet.
- This advancement contributes to the development of next-generation high-resolution imaging systems.
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