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MgB2 Coils for MRI Applications.

Weijun Yao1, Juan Bascuñán1, Seungyong Hahn1

  • 1FBML/MIT, Cambridge, MA 02139 USA.

IEEE Transactions on Applied Superconductivity : a Publication of the IEEE Superconductivity Committee
|July 20, 2019
PubMed
Summary
This summary is machine-generated.

We are developing a low-cost, liquid-helium-free Magnesium Diboride (MgB2) superconducting MRI magnet. Key challenges in conductor performance, joint fabrication, and quench protection for persistent current operation are addressed.

Keywords:
HTS/LTS magnetMgB2 superconductorNMR magnetpersistent mode

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Area of Science:

  • Materials Science
  • Superconductivity
  • Medical Imaging

Background:

  • Conventional MRI magnets rely on liquid helium cooling, increasing operational costs and complexity.
  • Magnesium Diboride (MgB2) offers a promising alternative for higher-temperature superconductivity, potentially enabling liquid-helium-free systems.

Purpose of the Study:

  • To report progress in developing a low-cost, liquid-helium-free MgB2 superconducting MRI magnet.
  • To identify and discuss critical technical challenges for persistent current operation.

Main Methods:

  • Investigating performance consistency of long-length MgB2 conductors.
  • Developing fabrication techniques for superconducting joints and persistent current switches.
  • Analyzing quench detection and protection strategies for operation in a solid nitrogen environment.

Main Results:

  • Progress has been made in addressing the technical hurdles for MgB2 magnet construction.
  • Specific challenges in conductor uniformity, joint integrity, and switch reliability have been identified.
  • Strategies for quench management in a solid nitrogen environment have been explored.

Conclusions:

  • The development of a liquid-helium-free MgB2 MRI magnet is feasible but requires overcoming specific engineering challenges.
  • Further research into conductor technology, joint fabrication, and protection systems is essential for practical implementation.
  • This work paves the way for more accessible and cost-effective MRI technology.