Open AccessPRECISION DOUBLET OF MAGNETIC QUADRUPOLE LENSES FOR ION BEAM FORMATION
Author(s) -
A.G. Ponomarev,
В.А. Ребров,
S.V. Kolinko,
V.F. Salivon
Publication year - 2020
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2020-127-045
Subject(s) - quadrupole , multipole expansion , quadrupole magnet , magnetic field , physics , radius , lens (geology) , yoke (aeronautics) , optics , aperture (computer memory) , magnetic lens , beam (structure) , electrostatic lens , computational physics , atomic physics , computer security , quantum mechanics , computer science , flight control surfaces , acoustics , aerodynamics , thermodynamics
The precision doublet of magnetic quadrupole lenses is presented. The doublet yoke and poles made from a single piece of soft magnetic iron. Doublet manufacturing technology provides of alignment of the geometric axes in the lenses with an accuracy of a few microns. The doublet geometry was chosen to obtain the maximum magnetic induction at the poles for a given radius of the lens aperture as a result of numerical simulation. An experimental study of the doublet properties was carried out using a setup for field reconstruction technique for magnetic quadrupole lenses. The relative position of the physical axes of the lenses (the geometrical location of points with zero magnetic induction) and the magnitudes of the parasitic multipole field components were determined.