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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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Hydrogen Cooling Options for MgB2-based Superconducting Systems.

W Stautner1, M Xu1, S Mine1

  • 1Electromagnetics & Superconductivity Lab, GE Global Research, Niskayuna, NY 12309, USA.

AIP Conference Proceedings
|April 21, 2022
PubMed
Summary
This summary is machine-generated.

Hydrogen cooling offers a cost-effective alternative to liquid helium for superconducting magnets like MgB2. This study explores multi-coolant systems and automotive-inspired designs for safer, efficient MRI scanners.

Keywords:
Hydrogen coolingMRIhydrogen safetyhydrogen storagepulsating heat pipesthermosiphon

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Area of Science:

  • Cryogenics
  • Superconducting Magnets
  • Medical Imaging Technology

Background:

  • Magnesium diboride (MgB2) enables low-cost superconducting magnets, shifting focus to efficient cooling methods.
  • Hydrogen is a highly efficient cryogenic coolant, suitable for superconducting magnet applications.
  • Current cooling methods for MgB2 magnets require optimization for reliability and safety.

Purpose of the Study:

  • To propose novel multi-coolant systems for MRI scanners utilizing both helium and hydrogen.
  • To present a design for whole-body MRI scanners integrating hydrogen automotive technology.
  • To evaluate the feasibility of replacing helium with hydrogen as a cost-efficient and safe coolant.

Main Methods:

  • Development of three distinct multi-coolant system designs for MRI scanners.
  • Adaptation of hydrogen automotive industry technologies for cryogenic cooling applications.
  • Analysis of quench propagation in MgB2 magnet windings under different cooling scenarios.

Main Results:

  • Proposed multi-coolant options provide a framework for integrating helium and hydrogen cooling.
  • A design leveraging hydrogen automotive technology is presented for whole-body MRI scanners.
  • The study supports the trend of substituting helium with hydrogen for cost and safety benefits.

Conclusions:

  • Hydrogen cooling presents a viable and economical alternative to liquid helium for superconducting magnets in MRI.
  • Integrating automotive hydrogen technology offers a pathway to safer and more efficient MRI cooling systems.
  • Further research into multi-coolant strategies and hydrogen safety is warranted for widespread adoption.