Magnetic Field Stability Test of LTS MRI Magnet Excited by Highly Stabilized Power Supply

LHe-free MRI (HTS-MRI) magnets fabricated by REBCO tape or BSCCO tape superconductors are expected due to the high-priced LHe. However, HTS-MRI magnet has some problems: the stability of the magnetic field by use of a power supply in a driving mode, and a screening current, for producing a high stab...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2016-04, Vol.26 (3), p.1-5
Main Authors: Yoshikawa, M., Yonemura, N., Yachida, T., Imura, T., Shirai, Y., Yokoyama, S.
Format: Article
Language:English
Subjects:
Active control
highly-stabilized power supply
LTS-MRI magnet
Magnetic field measurement
magnetic field stability
Magnetic fields
Magnetic flux density
Magnetic resonance imaging
persistent current operation
Persistent currents
Power supplies
Screening
Stability
Stability tests
Superconducting magnets
Superconducting tapes
Superconductivity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:LHe-free MRI (HTS-MRI) magnets fabricated by REBCO tape or BSCCO tape superconductors are expected due to the high-priced LHe. However, HTS-MRI magnet has some problems: the stability of the magnetic field by use of a power supply in a driving mode, and a screening current, for producing a high stability magnet field, both temporally and spatially, necessary for MRI imaging. One solution for these problems is an active magnetic field stability control by use of a power supply instead of the persistent current operation. In this paper, we measured and evaluated the magnetic field stability, using commercial 3T-LTS-MRI magnet in the power supply driving mode with the highly stabilized power supply.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2016.2525958