Title:
SUPERCONDUCTING MAGNET DEVICE, SUPERCONDUCTING COIL PROTECTION METHOD, AND MAGNETIC RESONANCE IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/145933
Kind Code:
A1
Abstract:
A superconducting magnet device is characterized by comprising forcible quench coils (30A to 40B) that cause AC loss in superconducting coils (10A to 20B) and a switching element (52) that is a switching means for controlling the actuation of the forcible quench coils, wherein the forcible quench coils (30A to 40B) are each disposed corresponding to each of the superconducting coils (10A to 20B). The superconducting magnet device is further characterized in that the turn-on voltage of the switching element (52) is higher than the voltage applied across both ends of the superconducting coil group (10A to 20B) while the superconducting magnet device is performing a rated operation.
Inventors:
MURATA YUKIHIRO (JP)
Application Number:
PCT/JP2013/053905
Publication Date:
October 03, 2013
Filing Date:
February 18, 2013
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
International Classes:
A61B5/055; G01R33/3815; H01F6/02; H01L39/04
Foreign References:
| JP2005353777A | 2005-12-22 | |||
| JP2009039183A | 2009-02-26 | |||
| JPH11102808A | 1999-04-13 | |||
| JP2007234689A | 2007-09-13 | |||
| JP2002076454A | 2002-03-15 | |||
| JPS644085A | 1989-01-09 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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