Superconducting magnet coil for very high field having an HTS coil section and method for production thereof

US6600398B2 · kind B2 · utility

Assignee

• Bruker Biospin GmbH · DE

Inventors

• Gerhard Roth · Rheinstetten, DE
• Arne Kasten · Karlsruhe, DE

Key dates

• Filing date: May 17, 2002
• Grant date: Jul 29, 2003
• Expiry date: May 17, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49014
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A superconducting very high field magnet coil with several solenoidal multi-layer coil sections which are wound in layers onto a hollow cylindrical support body (3) about a common central axis a, and which are electrically connected in series to carry a current in excess of 100 A is characterized in that the radially innermost coil section (1) comprises superconducting wire (2) which contains oxidic, high temperature superconductor (HTS) material, wherein the layers of the radially innermost coil section (1) are helically wound such that there is a free axial space between the walls, which is then sealed. The corresponding production method comprises the steps of helically winding a layer of superconducting HTS wire together with a filler wire onto the support body; removing the filler wire from the support body; repeating steps (a) and (b) until a desired number of layers of the coil section is obtained; thermally treating the winding packet for reacting the HTS material under a gaseous atmosphere containing O2 with optimized annealing parameters; and sealing the hollow spaces of the coil section. This permits production of an NMR-capable solenoid coil having only a few supercondu…