Magnetic, Mechanical and Thermal Modeling of Superconducting, Whole-Body, Actively Shielded, 3 T MRI Magnets Wound Using MgB2 Strands for Liquid Cryogen Free Operation
- The Ohio State Univ., Columbus, OH (United States)
- General Electric Global Research, Niskayuna, NY (United States)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Hyper Tech Research, Inc., Columbus, OH (United States)
Here we present magnetic, mechanical and thermal modeling results for a 3 Tesla actively shielded whole body MRI (Magnetic Resonance Imaging) magnet consisting of coils with a square cross section of their windings. The magnet design was a segmented coil type optimized to minimize conductor length while hitting the standard field quality and DSV (Diameter of Spherical Volume) specifications as well as a standard, compact size 3 T system. It had an overall magnet length and conductor length which can lead to conduction cooled designs comparable to NbTi helium bath cooled 3 T MRI magnets. The design had a magnetic field homogeneity better than 10 ppm (part-per-million) within a DSV (Diameter of Spherical Volume) of 48 cm and the total magnet winding length of 1.37 m. A new class of MgB2 strand especially designed for MRI applications was considered as a possible candidate for winding such magnets. This work represents the first magnetic, mechanical and thermal design for a whole-body 3 T MgB2 short (1.37 m length) MRI magnet based on the performance parameters of existing MgB2 wire. 3 Tesla MRI magnet can operate at 20 K at 67% of its critical current.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Institute of Biomedical Imaging and Bioengineering; National Institutes of Health (NIH)
- Grant/Contract Number:
- AC02-07CH11359; R01EB018363
- OSTI ID:
- 1872455
- Report Number(s):
- FERMILAB-PUB-22-257-TD; oai:inspirehep.net:2064668; TRN: US2306896
- Journal Information:
- IEEE Transactions on Applied Superconductivity, Vol. 32, Issue 4; ISSN 1051-8223
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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