Split-type magnetic field generator with wide homogeneous region

Authors
Shirai, T
Citation
T. Shirai, Split-type magnetic field generator with wide homogeneous region, IEEE MAGNET, 37(3), 2001, pp. 1091-1094
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
37
Issue
3
Year of publication
2001
Pages
1091 - 1094
Database
ISI
SICI code
0018-9464(200105)37:3<1091:SMFGWW>2.0.ZU;2-M
Abstract
This paper discusses the homogeneity of a magnetic field generator for meas urement of nuclear magnetic resonance (NMR). It shows that inhomogeneity is caused by an excess number of turns and a discrepancy from the design dime nsions. A control circuit consisting of a pair of shim coils and a few Hall elements can improve the homogeneity. With it, a homogeneity of the magnet ic field in the split coil of better than +/-0.05% over 50 mm was obtained.