Title :
Strong pulsed magnetic quadrupole lens
Author :
Chichkine, V. ; Winkler, M. ; Behr, K.-H. ; Geissel, H. ; Kalimov, A. ; Li, G. ; Muenzenberg, G. ; Scheidenberger, C. ; Weick, H. ; Wollnik, H.
Author_Institution :
St. Petersburg State Tech. Univ., Russia
fDate :
3/1/2002 12:00:00 AM
Abstract :
Pulsed magnetic quadrupole lenses have been developed for focusing high energetic heavy ion beams. The quadrupoles were built using iron-free structures. Up to now a magnetic flux density above 14 T has been reached in a quadrupole of 22 mm aperture. The field properties of the quadrupoles are presented. In an experiment with a heavy ion beam the focusing properties were investigated. This development can be used for building a condensor system to increase the collection efficiency of a downstream ion optical devices for nuclear reaction products.
Keywords :
focused ion beam technology; ion optics; magnetic flux; magnetic lenses; particle beam focusing; pulse generators; pulsed power supplies; 14 T; 22 mm; 220 V; 3 kV; collection efficiency; condensor system; downstream ion optical devices; focusing properties; high energetic heavy ion beams; ion beam applications; iron-free structures; magnetic flux density; nuclear reaction products; strong pulsed magnetic quadrupole lens; Apertures; Ion beams; Lenses; Magnetic flux; Magnetic flux density; Saturation magnetization; Steel; Superconducting coils; Superconducting magnets; Superconducting materials;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2002.1018497
