The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2003
Filed:
Nov. 08, 2001
Bruker Biospin AG, Faellanden, CH;
Abstract
A magnet arrangement comprising an actively shielded superconducting magnet coil system (M) and a plurality of protective elements (R , . . . , Rl) for protection in case of a quench, wherein the superconducting magnet coil system (M) comprises a radially inner partial coil system (C ) and a radially outer partial coil system (C ) which are electrically connected in series and arranged coaxially with respect to one another and which each produce a magnetic field of opposite direction, wherein the superconducting current path of the magnet coil system (M) is subdivided into several sections (A , . . . , An) each of which is electrically connected in parallel with at least one of the protective elements (R , . . . , Rl), and wherein at least one of these sections (A , . . . , An) comprises windings of the radially inner partial coil system (C ) and also windings of the radially outer partial coil system (C ), is characterized in that at least one additional closed current path (C ) is provided which has a non-vanishing areal winding number and which has a non-zero inductive coupling L with at least one section Ai. This permits—in particular through selection of the dimensions of the additional current path (C )—suppression of an excess stray field of the magnet arrangement in the case of a quench of the magnet coil system (M).