A LIMITATION OF HYSTERESIS IN THE CORRECTION OF THE SEXTUPOLE FIELD IN A MAGNETIC QUADRUPOLE LENS

Authors
BREESE MBH SWIETLICKI E PALLON J
Citation
Mbh. Breese et al., A LIMITATION OF HYSTERESIS IN THE CORRECTION OF THE SEXTUPOLE FIELD IN A MAGNETIC QUADRUPOLE LENS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 83(4), 1993, pp. 588-590
Citations number
8
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
83
Issue
4
Year of publication
1993
Pages
588 - 590
Database
ISI
SICI code
0168-583X(1993)83:4<588:ALOHIT>2.0.ZU;2-7
Abstract
Parasitic sextupole fields present in magnetic quadrupole lenses can b e corrected by shunting the current flowing through one or two adjacen t pole piece coils. It is shown here that this procedure can be limite d by hysteresis in the quadrupole lens. This means that the sextupole field strength and also the size of the current shunts required to cor rect it depend on the direction of the current flow in the lens.