JPS6450482A - Magnetic shielding device - Google Patents
Magnetic shielding deviceInfo
- Publication number
- JPS6450482A JPS6450482A JP62206299A JP20629987A JPS6450482A JP S6450482 A JPS6450482 A JP S6450482A JP 62206299 A JP62206299 A JP 62206299A JP 20629987 A JP20629987 A JP 20629987A JP S6450482 A JPS6450482 A JP S6450482A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- magnetic flux
- trap
- reduced
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
PURPOSE:To reduce a magnetic field in a shielding structure by electrically moving and removing a trap magnetic flux pin-anchored by the use of a superconductor. CONSTITUTION:A superconducting shield 2 formed of a superconductor is introduced into a ferromagnetic shield 1 formed of a ferromagnetic material, and the whole temperature of the shield 2 is raised to a superconduction transition temperature(Tc) or more. Then, when the temperature of the shield 2 is reduced to the Tc or less, a magnetic flux of a low magnetic field obtained by the shield 1 is pin-anchored as a trap magnetic flux by the use of the shield 2. Then, when a current flows from a drive power source 3 to the shield 2, a force perpendicular to the current direction is added to the trap magnetic flux, which is moved. Then, only the end is raised to the Tc or more to erase the trap magnetic flux, and when it is the reduced to the Tc or less, the trap magnetic flus of the shield 2 can be excluded. Thus, the interior of a shielding structure can be reduced to a low magnetic field.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206299A JPS6450482A (en) | 1987-08-21 | 1987-08-21 | Magnetic shielding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206299A JPS6450482A (en) | 1987-08-21 | 1987-08-21 | Magnetic shielding device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6450482A true JPS6450482A (en) | 1989-02-27 |
Family
ID=16521001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62206299A Pending JPS6450482A (en) | 1987-08-21 | 1987-08-21 | Magnetic shielding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6450482A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0368199A (en) * | 1989-08-07 | 1991-03-25 | Dowa Mining Co Ltd | Superconductive magnetic shield material |
JPH04262802A (en) * | 1991-02-18 | 1992-09-18 | Kajima Corp | Manufacture of steel work material with sleeve and device therefor |
-
1987
- 1987-08-21 JP JP62206299A patent/JPS6450482A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0368199A (en) * | 1989-08-07 | 1991-03-25 | Dowa Mining Co Ltd | Superconductive magnetic shield material |
JPH04262802A (en) * | 1991-02-18 | 1992-09-18 | Kajima Corp | Manufacture of steel work material with sleeve and device therefor |
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