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6.2 The Mirror_parabolic McXtrace Component
Idealized parabolic mirror (in XZ)
Identification
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Author: Erik Knudsen
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Origin: Risoe
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Date: Feb 11, 2010
Description
Takes a reflectivity as input and reflects rays in a ideal geometry parabolic mirror. The mirror is positioned in the zx-plane curving towards positive y. I.e. the focal point is (0,0,f(a,b)) The geometry of the paraboloid is governed by the equation: y = xˆ2 / aˆ2 + zˆ2 / bˆ2 Hence, the focal length for the ’x’ curve is f=aˆ2 / 4, and analogous for z.
Example: Mirror_parabolic(R0=1, a=1, b=0, xwidth=0.02, yheight=0, zdepth=0.05)
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
R0 |
1 |
Reflectivity of mirror. |
1 |
|
a |
sqrt(m) |
Transverse curvature scale, if zero - the mirror is flat along x. |
1 |
|
b |
sqrt(m) |
Longitudinal curvature scale, if zero, flat along z. |
1 |
|
xwidth |
m |
Width of mirror. |
0.1 |
|
zdepth |
m |
Length of mirror. |
0.1 |
|
yheight |
m |
Thickness of mirror. If 0 (the default) the mirror is mathemticlly thin. Only has an effect for hitting the mirror from the side. |
0 |
|
focusx |
m |
Transverse focal length along X. Sets a. |
0 |
|
focusz |
m |
Longitudinal focal length along Z. Sets b. |
0 |
|
radius |
m |
Focal length. Sets focusx and focusz. |
0 |
|
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Links
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Component source code found in file Mirror_parabolic.comp.
Mirror with a parabolic curvature profile.
This component is scheduled to be merged with Mirror_elliptic
