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Article URL : http://stacks.iop.org/0022-3727/10/i=11/a=007
Title      : The design of deflection coils
Authors    : H Ohiwa
Year	   : 1977
Start Page : 1437
Journal    : Journal of Physics D: Applied Physics
Volume     : 10
Issue Num  : 11
ISSN       : 0022-3727
Abstract   : The relation between the deflection aberrations and winding distribution of a scanning system is
briefly reviewed and the importance of the cosine-distributed coil is pointed out. The winding
distribution of the saddle-type deflection coil is completely Fourier-analysed, including the end
effect and formulae are given for calculating the Fourier components of an air-core deflection
field. A new type of corrector coil is proposed to eliminate the end effect. The equations of motion
of Gaussian rays including third-order perturbations are shown. The method developed is applied to
evaluating the aberrations of a Vidicon tube printed scanning coil and to designing a new scanning
system for microfabrication. The Fourier decomposition technique developed reduces the
three-dimensional magnetic field calculation to a two-dimensional one.
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