Title :
Development of Conduction-Cooled Superconducting Magnet for Baby Imaging
Author :
Wang, Qiuliang ; Wang, Chunzhong ; Wang, Hui ; Wang, Housheng ; Zhang, Hongjie ; Li, Yi ; Li, Lankai ; Ni, Zhipeng ; Huang, Likai ; Ma, Qiyuan ; Gao, Eric ; Wang, Jianghua
fDate :
6/1/2010 12:00:00 AM
Abstract :
A magnet with very high homogeneity for the baby imaging is designed and will be fabricated. The optimal design method of short actively shielded superconducting magnet is presented based on nonlinear least square method. The superconducting magnet is cooled through a pulse tube refrigerator (PTR) with isolated vibration. The available diameter for the superconducting magnet is ?? 500 mm. Diameter Sphere Volume (DSV), homogeneity and center magnetic flux density are ?? 300 mm, 2 ppm and 1.5 Tesla, respectively. In the paper, the Electromagnetic (EM) design, stress analysis, quench protection and cryogenic system for the magnet are presented.
Keywords :
biomedical MRI; biomedical equipment; cryogenics; least squares approximations; paediatrics; superconducting magnets; actively shielded superconducting magnet; baby imaging; center magnetic flux density; conduction cooled superconducting magnet; cryogenic system; diameter sphere volume; electromagnetic design; homogeneity; magnetic flux density 1.5 tesla; nonlinear least squares method; pulse tube refrigerator; quench protection; size 300 mm; size 500 mm; stress analysis; vibration isolation; Baby imaging; MRI; conduction-cooled superconducting magnet;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2040154
