Title:
【発明の名称】磁石組立体
Document Type and Number:
Japanese Patent JP3043478
Kind Code:
B2
Abstract:
An active shield magnet has a plurality of screening coils (a-f') which each have a small number of turns in comparison with the number of turns of the main magnet coil assemblies and which are connected in series in a closed loop to reduce the effect of disturbing influences in a working volume of the magnet.
Inventors:
Leonhard Zertner
Francis Dave Ys
Francis Dave Ys
Application Number:
JP20636791A
Publication Date:
May 22, 2000
Filing Date:
July 22, 1991
Export Citation:
Assignee:
Oxford Magnet Technology Limited
Siemens Aktiengesellschaft
Siemens Aktiengesellschaft
International Classes:
A61B5/055; G01R33/20; G01R33/381; G01R33/421; H01F6/00; H01F7/20; (IPC1-7): H01F7/20; A61B5/055; G01R33/20; H01F6/00
Attorney, Agent or Firm:
Iwao Yamaguchi (1 person outside)