Superconducting magnet coil system with quench protection for the prevention of excessive localized currents

US8467841B2 · kind B2 · utility

Assignee

• Bruker Biospin GmbH · DE

Inventors

• Wolfgang Frantz · Karlsruhe, DE
• Gerald Neuberth · Bruchsal, DE
• Gerhard Roth · Rheinstetten, DE

Key dates

• Filing date: Sep 1, 2010
• Grant date: Jun 18, 2013
• Expiry date: Nov 26, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/288
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A superconducting high-field magnet coil system comprising several radially nested main coil sections (1, 2, 3, 4, 5) which are connected to each other in series in such a fashion that currents of the same direction flow through them during operation, wherein a first main coil section (EHS) is disposed radially further inward than a second main coil section (ZHS) and at least one intermediate main coil section (ZW) is disposed radially between the first and the second main coil section (EHS, ZHS), and with a superconducting switch (11) via which all main coil sections (1, 2, 3, 4, 5) can be superconductingly short-circuited in series, is characterized in that the first main coil section (EHS) and the second main coil section (ZHS) are directly successively series-connected and the first main coil section (EHS) and the second main coil section (ZHS) are bridged by a common quench protection element, which does not bridge the at least one intermediate main coil section (ZW). The magnet coil system realizes quench protection for selectively preventing excess currents in magnet coil areas in which the excessive mechanical force load associated with an excess current would damage the su…