Superconducting magnetic shielding apparatus and method
Abstract
Disclosed are a method and apparatus for providing magnetic shielding around a working volume. The apparatus includes a hollow elongated superconducting shell or cylinder having an elongated low magnetic pinning central portion, and two high magnetic pinning end regions. Transition portions of varying magnetic pinning properties are interposed between the central and end portions. The apparatus further includes a solenoid substantially coextensive with and overlying the superconducting cylinder, so as to be magnetically coupled therewith. The method includes the steps passing a longitudinally directed current through the superconducting cylinder so as to depin magnetic reservoirs trapped in the cylinder. Next, a circumferentially directed current is passed through the cylinder, while a longitudinally directed current is maintained. Depinned magnetic reservoirs are moved to the end portions of the cylinder, where they are trapped. 5 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7240967
- Patent Number(s):
- 4409579
- Application Number:
- PPN: US 6-396556
- Assignee:
- PTO; EDB-94-127065
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 9 Jul 1982
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; MAGNETIC SHIELDING; SHIELDS; DESIGN; ELECTRIC CURRENTS; MAGNETIC FLUX; SUPERCONDUCTORS; CURRENTS; SHIELDING; 665412* - Superconducting Devices- (1992-)
Citation Formats
Clem, J R, and Clem, J R. Superconducting magnetic shielding apparatus and method. United States: N. p., 1983.
Web.
Clem, J R, & Clem, J R. Superconducting magnetic shielding apparatus and method. United States.
Clem, J R, and Clem, J R. Tue .
"Superconducting magnetic shielding apparatus and method". United States.
@article{osti_7240967,
title = {Superconducting magnetic shielding apparatus and method},
author = {Clem, J R and Clem, J R},
abstractNote = {Disclosed are a method and apparatus for providing magnetic shielding around a working volume. The apparatus includes a hollow elongated superconducting shell or cylinder having an elongated low magnetic pinning central portion, and two high magnetic pinning end regions. Transition portions of varying magnetic pinning properties are interposed between the central and end portions. The apparatus further includes a solenoid substantially coextensive with and overlying the superconducting cylinder, so as to be magnetically coupled therewith. The method includes the steps passing a longitudinally directed current through the superconducting cylinder so as to depin magnetic reservoirs trapped in the cylinder. Next, a circumferentially directed current is passed through the cylinder, while a longitudinally directed current is maintained. Depinned magnetic reservoirs are moved to the end portions of the cylinder, where they are trapped. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 11 00:00:00 EDT 1983},
month = {Tue Oct 11 00:00:00 EDT 1983}
}