Arbitrary Order Aberrations for Elements Characterized by Measured Fields
AbstractThe precise understanding of the properties of large acceptance devices
like modern nuclear spectrographs often requires the calculation of
high-order aberrations. In many practical cases, it is necessary to treat
all details of the fields of the elements, and instead of utilizing more or
less simple field models, one has to rely on measured data. It is shown how
aberrations of in principle unlimited orders can be obtained from measured
field data; moreover, for the remaining aberrations of yet
higher order, rigorous upper bounds of their influence on the motion can be
found. The methods are used for the analysis and correction of the
high-resolution S800 spectrograph at MSU.
K. Makino, M. Berz,
Proc. SPIE Charged Particle Optics III 3155 (1997) 221-227
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