Title:
CONDUCTION COOLING PERMANENT CURRENT SWITCH, MRI DEVICE, NMR DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/034295
Kind Code:
A1
Abstract:
The problem of the present invention is to turn on or off a permanent current switch at high speed with small heat input. A conduction cooling permanent current switch according to the present invention comprises a superconductive wire (1) for a current to flow; a cooling stage (9) for cooling the superconductive wire; and a heater (8) for heating the superconductive wire. The superconductive wire is arranged between respective surfaces formed by the cooling stage and the heater. The core of the superconductive wire is comprised of magnesium diboride (6) and a base material (5) arranged in the outer periphery of the core is comprised of a material having a resistivity of 10 μΩcm or more in 40K.
Inventors:
KODAMA MOTOMUNE (JP)
TANAKA KAZUHIDE (JP)
ICHIKI YOTA (JP)
TANAKA KAZUHIDE (JP)
ICHIKI YOTA (JP)
Application Number:
PCT/JP2013/069090
Publication Date:
March 06, 2014
Filing Date:
July 12, 2013
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
A61B5/055; H01L39/20; G01R33/3815; H01B12/06; H01F6/00
Foreign References:
| JPH01137557U | 1989-09-20 | |||
| JP2007221013A | 2007-08-30 | |||
| JP2006228797A | 2006-08-31 | |||
| JPH08190817A | 1996-07-23 | |||
| JP2005529832A | 2005-10-06 | |||
| JP2003069093A | 2003-03-07 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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