An X-ray compound refractive lens (CRL) with a parabolic cylinder profile focusing in 1D, i.e. onto a line
The lens is invariant along the x-axis and has a parabolic profile along the y-axis defined as z/c = y^2/b^2.
Thus, i.e. it focuses onto a line along the x-axis.
N>1 means that a stack of lenses is to be simulated. Each lens consists of a pair of two opposing parabolic surfaces
with a distance d between them. The reference point of the component is at the bottom of the first parabolic
Parameters in boldface are required;
the others are optional.
Radius of curvature (circular approximation at the tip of the profile).
The CRL's aperture along Y.
The width of the CRL in the invariant direction x.
Distance between two surfaces of the lens along the propagation axis.