公开(公告)号：EP0251342A3

公开(公告)日：1988-11-17

申请号：EP87111469

申请日：1984-11-09

申请人： OXFORD MAGNET TECHNOLOGY LIMITED

发明人： Brown, Ian Jesse ,  Bird, John Maurice ,  Black, David ,  McDougall, Ian Leitch

IPC分类号： H01F07/22 ,  G01N24/06

CPC分类号： G01R33/421 ,  G01R33/3815 ,  G01R33/3875 ,  Y10S505/879

摘要： A magnet assembly (1) comprises a first superconducting coil assembly (A,Aʹ-C,Cʹ) 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 concentric and electrically connected in series with the first superconducting coil assembly, wherein the first and second super conducting coil assemblies each generate, in use, magnetic fields whose corresponding components are of substantially the same order of magnitude. The assemblies are arranged such that a resultant uniform magnetic field is generated in a working volume (3), and the second magnetic field opposes the first magnetic field outwardly of the magnet assembly (1). The first and second coil assemblies are also arranged such that they only generate a uniform magnetic field within the working volume (3) when operated together.