Thumbnail
Access Restriction
Open

Author Crow, J. T.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ MAGNETIC FIELD CONFIGURATIONS ♦ ANALYTICAL SOLUTION ♦ MULTIPOLES ♦ SOLENOIDS ♦ MAGNETIC SHIELDING ♦ SERIES EXPANSION ♦ SPACE DEPENDENCE ♦ TWO-DIMENSIONAL CALCULATIONS
Abstract Symmetries in basic equations for dipole fields of line currents allow the use of a relatively small number of conductors to produce highly uniform transverse (dipole) magnetic fields over a large fraction of the interior of the cylinder on which the wires are located. For example, a simple 12-wire array has better than 1 ppm field uniformity for radii up to 1/3 of the cylinder radius, and better than 0.1{percent} uniformity over more than 1/3 of the cylinder area, and a 50-wire array would have approximately 0.001 ppm uniformity over half the cylinder area if sufficient construction accuracy could be maintained. The configurations are simply transformed to quadrupoles, sextupoles, and higher multipoles that have highly uniform appropriate radial field derivatives. Shielded systems are also described. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Department Sandia National Laboratory
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 67
Issue Number 3
Organization Sandia National Laboratory


Open content in new tab

   Open content in new tab