Superconducting magnetic shielding apparatus and method
Abstract
Disclosed is 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.
- Inventors:
-
- Ames, IA
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 864733
- Patent Number(s):
- 4409579
- Assignee:
- Clem, John R. (Ames, IA);Clem, John R. (Ames, IA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- superconducting; magnetic; shielding; apparatus; method; disclosed; providing; volume; hollow; elongated; shell; cylinder; pinning; central; portion; regions; transition; portions; varying; properties; interposed; solenoid; substantially; coextensive; overlying; magnetically; coupled; therewith; steps; passing; longitudinally; directed; current; depin; reservoirs; trapped; circumferentially; passed; maintained; depinned; moved; hollow elongated; superconducting magnet; central portion; superconducting magnetic; magnetically coupled; providing magnetic; shielding apparatus; magnetic shielding; transition portion; magnetic shield; coupled therewith; /335/174/505/
Citation Formats
Clem, John R, and Clem, John R. Superconducting magnetic shielding apparatus and method. United States: N. p., 1983.
Web.
Clem, John R, & Clem, John R. Superconducting magnetic shielding apparatus and method. United States.
Clem, John R, and Clem, John R. Sat .
"Superconducting magnetic shielding apparatus and method". United States. https://www.osti.gov/servlets/purl/864733.
@article{osti_864733,
title = {Superconducting magnetic shielding apparatus and method},
author = {Clem, John R and Clem, John R},
abstractNote = {Disclosed is 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}