&aperture_data STRING input = NULL; long periodic = 1; long disable = 0; &end
input
-- Name of SDDS file supplying the aperture data. The following columns are
all required, in double or float type, with units of m
(meters).
s
-- Distance along the central trajectory.
xHalfAperture
-- Half aperture in the horizontal.
yHalfAperture
-- Half aperture in the vertical.
xCenter
-- Center of the aperture in the horizontal.
yCenter
-- Center of the aperture in the vertical.
periodic
-- If non-zero, the aperture is a periodic function of s
, with period equal
to the range of the data.
disable
-- If non-zero, the command is ignored.