A persistent-mode 0.5 T solid-nitrogen-cooled MgB2 magnet for MRI [0.03%]
一种用于磁共振成像的室温 Persistent 模式0.5T固体氮冷却MgB2超导磁体
Jiayin Ling,John P Voccio,Seungyong Hahn et al.
Jiayin Ling et al.
This paper presents construction details and test results of a persistent-mode 0.5-T MgB2 magnet developed at the Francis Bitter Magnet Lab, MIT. The magnet, of 276-mm inner diameter and 290-mm outer diameter, consisted of a stack of 8 sole...
Conductors for commercial MRI magnets beyond NbTi: requirements and challenges [0.03%]
商用MRI磁体的超导线缆——NbTi之外的选择：要求和挑战
Michael Parizh,Yuri Lvovsky,Michael Sumption
Michael Parizh
Magnetic Resonance Imaging (MRI), a powerful medical diagnostic tool, is the largest commercial application of superconductivity. The superconducting magnet is the largest and most expensive component of an MRI system. The magnet configurat...
Understanding the densification process of Bi2Sr2CaCu2Ox round wires with overpressure processing and its effect on critical current density [0.03%]
过压处理对Bi2Sr2CaCu2Ox圆形导线致密化过程及其对临界电流密度的影响机制研究
M R Matras,J Jiang,D C Larbalestier et al.
M R Matras et al.
Overpressure (OP) processing increases the critical current density (JC ) of Bi2Sr2CaCu2Ox (2212) round wires by shrinking the surrounding Ag matrix around the 2212 filaments, driving them close to full density and greatly increasing the 22...
A Feasibility Study of High-Strength Bi-2223 Conductor for High-Field Solenoids [0.03%]
高场磁体用高温Bi-2223线材可行性研究
A Godeke,D V Abraimov,E Arroyo et al.
A Godeke et al.
We performed a feasibility study on a high-strength Bi2-x Pb x Sr2Ca2Cu3O10-x (Bi-2223) tape conductor for high-field solenoid applications. The investigated conductor, DI-BSCCO Type HT-XX, is a pre-production version of Type HT-NX, which h...
An Analytical Approach towards Passive Ferromagnetic Shimming Design for a High-Resolution NMR Magnet [0.03%]
高性能核磁共振 magnets 被动铁氧体匀场的分析方法研究
Frank X Li,John P Voccio,Min Cheol Ahn et al.
Frank X Li et al.
This paper presents a warm bore ferromagnetic shimming design for a high resolution NMR magnet based on spherical harmonic coefficient reduction techniques. The passive ferromagnetic shimming along with the active shimming is a critically i...
Magnetic field dependent stability and quench behavior and degradation limits in conduction-cooled MgB2 wires and coils [0.03%]
磁体磁场相关的稳定性、失超特性和降解极限研究——以传导冷却的镁硼线圈为例
Liyang Ye,Davide Cruciani,Minfeng Xu et al.
Liyang Ye et al.
Long lengths of metal/MgB2 composite conductors with high critical current density (Jc), fabricated by the power-in-tube (PIT) process, have recently become commercially available. Owing to its electromagnetic performance in the 20 K - 30 K...