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Thermal Analysis of the 4 K Cryostat Within a 1.5 T Conduction-Cooled Superconducting Magnet for Whole-Body MRI Application
- Source :
- IEEE Transactions on Applied Superconductivity; November 2024, Vol. 34 Issue: 8 p1-5, 5p
- Publication Year :
- 2024
-
Abstract
- This paper presented the thermal analysis of the 4 K cryostat of a self-developed 1.5 T conduction-cooled superconducting magnet in order to assess the cooling without liquid helium. Through a two-stage GM cryocooler and some solid thermal links, the NbTi coils achieved 4 K for superconducting state. Whole-body MRI requirements can be satisfied by the superconducting magnet's electromagnetic design, which has a large bore and a homogenous magnetic field. It will take about 278 hours to reach the lowest temperature of 3.73 K through precooling the 4 K cryostat with liquid nitrogen (77 K). Additionally, the FED method was used to evaluate the 4 K cryostat's temperature distribution, and it was determined that the temperature range of 3.99–4.12 K was enough for the magnet to operate safely. The analysis showed that the 1.5 T liquid-helium-free superconducting magnet was feasible and economical, which will be crucial in preserving helium supplies and lowering healthcare expenses.
Details
- Language :
- English
- ISSN :
- 10518223 and 15582515
- Volume :
- 34
- Issue :
- 8
- Database :
- Supplemental Index
- Journal :
- IEEE Transactions on Applied Superconductivity
- Publication Type :
- Periodical
- Accession number :
- ejs66944944
- Full Text :
- https://doi.org/10.1109/TASC.2024.3420212