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14.48 The Mirror_Parabolic McStas Component
Parabolic mirror.
Identification
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Author: <a href="mailto:desert@drecam.cea.fr">Sylvain Desert</a>
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Origin: <a href="http://www-llb.cea.fr/">LLB</a>
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Date: 2007
Description
Models a parabolic mirror. The reflectivity profile is given by a 2-column reflectivity free text file with format [q(Å-1) R(0-1)].
Example: Mirror_Parabolic(reflect="supermirror_m3.rfl", xwidth = 0.05, xshift=0.05, yheight = 2e-4, focus = 6.6e-4)
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
reflect |
q(Å\(^{-1}\) R(0-1) |
(str) Reflectivity file name. Format |
0 |
|
xwidth |
m |
width of the illuminated parabola |
0.05 |
|
xshift |
m |
distance between the beam centre and the symetric axis of the parabolla |
0.019 |
|
yheight |
m |
height of the mirror |
2e-4 |
|
focus |
m |
focal length |
6.6e-4 |
|
R0 |
1 |
Low-angle reflectivity |
0.99 |
|
Qc |
Å\(^{-1}\) |
Critical scattering vector |
0.0219 |
|
alpha |
Å |
Slope of reflectivity |
6.07 |
|
m |
1 |
m-value of material. Zero means completely absorbing. |
1.0 |
|
W |
Å\(^{-1}\) |
Width of supermirror cut-off |
0.003 |
|
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Links
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Component source code found in file Mirror_Parabolic.comp.
