Title:
SUPERCONDUCTOR ELECTROMAGNET AND MAGNETIC RESONANCE IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/150951
Kind Code:
A1
Abstract:
To minimize, with a simple configuration, electromagnetic force which arises from an eddy current in a radiation shield when a superconductor electromagnet is quenched, one or more conductor rings (5) are bonded to a radiation shield (4) upon approximately the same axis as a superconductor coil. A region whereupon the conductor rings (5) are bonded is a region in which the direction of a component of a magnetic field in a radial direction when the superconductor coil is quenched is the opposite of a region in which the superconductor rings are not bonded. It is thus possible to eliminate electromagnetic force arising from an eddy current in the radiation shield when the superconductor electromagnet is quenched with electromagnetic force arising in the conductor rings.
Inventors:
OKUBO SHIGEHARU (JP)
MURATA YUKIHIRO (JP)
MURATA YUKIHIRO (JP)
Application Number:
PCT/JP2013/059242
Publication Date:
October 10, 2013
Filing Date:
March 28, 2013
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
International Classes:
H01F6/00; A61B5/055
Foreign References:
| JP2007061528A | 2007-03-15 | |||
| JP2008218809A | 2008-09-18 | |||
| JPH0745423A | 1995-02-14 | |||
| JPH01109708A | 1989-04-26 |
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