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12.7 The Mirror_toroid_pothole McXtrace Component
Toroidal shape mirror (in XZ)
Identification
-
Author: Erik B Knudsen
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Origin: DTU Physics
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Date: Jul 2016
Description
This is an implementation of a toroidal mirror which may be curved in two dimensions. To avoid solving quartic equations, the intersection is computed as a combination of two intersections. First, the ray is intersected with a cylinder to catch (almost) the small radius curvature. Secondly, the ray is the intersected with an ellipsoid, with the curvatures matching that of the torus.
The first incarnation (Mirror_toroid.comp) the mirror curves outwards (a bump), but this incarnation (Mirror_toroid_pothole) curves inwards (a pothole).
Example: Mirror_toroid_pothole( radius=0.1, radius_o=1000, xwidth=5e-2, zdepth=2e-1,R0=1, coating=””)
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
zdepth |
m |
Length of mirror. |
0.1 |
|
xwidth |
m |
Width of mirror. |
0.01 |
|
radius |
m |
Curvature radius |
|
|
radius_o |
m |
Curvature radius, outwards |
|
|
R0 |
1 |
Reflectivity of mirror. |
0 |
|
coating |
str |
Datafile containing either mirror material constants or reflectivity numbers. |
”” |
|
|
|||
|
|
|||
|
|
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Links
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Component source code found in file Mirror_toroid_pothole.comp.
