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Proceedings Paper

Electron Optical Properties And Electron Trajectories Of The Multipole Magnet For BESSY
Author(s): J. Pfluger; W.-D. Klotz; W. Gudat
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Paper Abstract

For the 0.8 GeV storage ring BESSY in Berlin an insertion device to be used as undulator and wiggler (0 ≤ K ≤ 6) is currently under construction. The pure permanent magnet structure consists of 35 periods with 7 cm period length. The influence of operating this structure with the small emittance optic METRO was studied quantitatively in linear synchrotron theory by modelling the multipole structure by hard edge dipole magnets. Working point, betatron functions etc. were studied as function of the K parameter. It turns out that vertical focussing can be compensated sufficiently well for fields ≤12 kG by detuning the two adjacent quadrupoles. The model calculations were checked by calculating trajectories through the full three dimensional magnetic field by solving the equations of motion. As expected, vertical focussing is overestimated in the hard edge model by about 20 %.

Paper Details

Date Published: 5 May 1986
PDF: 4 pages
Proc. SPIE 0582, Insertion Devices for Synchrotron Sources, (5 May 1986); doi: 10.1117/12.950933
Show Author Affiliations
J. Pfluger, Berliner Elektronenspeicherring-Gesellschaft fur Synchrotronstrahlung (BESSY) (W. Germany)
W.-D. Klotz, Berliner Elektronenspeicherring-Gesellschaft fur Synchrotronstrahlung (BESSY) (W. Germany)
W. Gudat, Institut fur Festkorperforschung der KFA Julich (Germany)

Published in SPIE Proceedings Vol. 0582:
Insertion Devices for Synchrotron Sources
Ingolf E. Lindau; Roman O. Tatchyn, Editor(s)

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