Magnet assembly for use in NMR apparatus

USRE36782E · kind E · reissue

Assignee

• Oxford Medical Limited · GB

Inventors

• Ian J. Brown · Austin, US
• John M. Bird · Ithaca, US
• Ian Leitch McDougall · North Vancouver, CA
• David L. Black · Kendall, US

Key dates

• Filing date: Jun 26, 1996
• Grant date: Jul 18, 2000
• Expiry date: Jun 26, 2016

Classification

• Technology area (CPC —): General

Abstract

A magnet assembly (1) particularly for use in NMR apparatus comprises a first superconducting coil assembly (A,A'-C,C') for generating a first magnetic field; and a second superconducting coil assembly (D-F) for generating a second magnetic field. The second superconducting coil assembly (D-F) is electrically connected in series with the first superconducting coil assembly (A,A'-C,C'). Each coil assembly (A,A'-C,C'; D-F) generates magnetic fields where corresponding components are of substantially the same order of magnitude whereby a resultant, uniform magnetic field is generated in a working volume (3). The second magnetic field opposes the first magnetic field externally of the magnet assembly (1).