[ Identification | Description | Input parameters | Output parameters | Links ]

The Lens_simple Component

Simple refractive x-ray lens

Identification

Description

Models a stack of N refractive lenses, with a radius of curvature, r, at the apex.
The model is a thin-lens approximation where photons are refracted in a the XY plane
at Z=0. Absorption is generally disregarded may be handled through the use of the optional
transmission parameter T, where 0<=T<=1.
Thus, the lens has the focal length of f=R/(2*N*&delta) where the x-ray refractive
index is written: n = 1 - &delta + i &beta.

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
xwidthmWidth of lens aperture.0
yheightmHeight of lens aperture.0
radiusmRadius of lens aperture (overrides xwidth & yheight).1e-3
T Transmission efficiency of the lens.1
r The radius of curvature of the lens.0
N The number of successive lenses in the stack.1
verbose Extra information for debugging.0
fmFocal length - overrides the material_datafile - and diregards chromatic aberration.0
material_datafile File where the material parameters for the lens may be found. Format is similar to what may be found off the NISP website."Be.txt"

Output parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
prms

Links


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated on 2021-08-13 08:57:53