Second-order theory of helical hexapole lens of infinite length

dc.creator	Toprek, Dragan
dc.date.accessioned	2018-03-01T20:07:11Z
dc.date.available	2018-03-01T20:07:11Z
dc.date.issued	2007
dc.identifier.issn	0168-583X
dc.identifier.uri	https://vinar.vin.bg.ac.rs/handle/123456789/3230
dc.description.abstract	Expressions which can be used to calculate the focusing coefficients applicable to the interior regions (no fringe fields) of magnetic helical hexapole lenses of infinite length have been derived through second-order. It is shown that the helical hexapole has better focusing properties than the non-helical case. Expressions for the aberration coefficients are derived and, for appropriate value of the twisted angle, the helical hexapole reduces aberrations compared to the non-helical case. The numerical examples of a magnetic helical hexapoles in the case of a 25 MeV proton and 250 GeV electron beams are performed. (c) 2007 Elsevier B.V. All rights reserved.	en
dc.rights	restrictedAccess	en
dc.source	Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms	en
dc.subject	helical hexapole	en
dc.subject	aberration	en
dc.subject	beam optics	en
dc.title	Second-order theory of helical hexapole lens of infinite length	en
dc.type	article	en
dcterms.abstract	Топрек Драган;
dc.citation.volume	263
dc.citation.issue	2
dc.citation.spage	483
dc.citation.epage	487
dc.identifier.wos	000250661100024
dc.identifier.doi	10.1016/j.nimb.2007.06.016
dc.citation.rank	M21
dc.identifier.scopus	2-s2.0-34848845215

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