McStas sample component for the NCrystal library for thermal neutron transport (<a href="https://github.com/mctools/ncrystal">www</a>).
Author: NCrystal developers
Origin: NCrystal Developers (European Spallation Source ERIC and DTU Nutech)
Date: 2015
McStas sample component using the NCrystal library for thermal neutron transport in a single bulk material filling a single simple convex volume (box, sphere or cylinder).
The geometrical layout of the volume is determined via the xwidth, yheight, zdepth, and radius parameters, and the material being modelled is determined via an NCrystal configuration string ("cfg-string").
For more information about NCrystal and cfg-strings, refer to the NCrystal wiki. In particular, browse the available datafiles at Data-library and read about the format of the cfg-string expected in the "cfg" parameter at Using-NCrystal.
For more complicated geometries, it might be desirable to use NCrystal via the McStas Union components instead.
Note that the physics backend of this component will be whichever NCrystal installation is available and associated with the "ncrystal-config" command.
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
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|
cfg |
str |
NCrystal material configuration string (details <a href="https://github.com/mctools/ncrystal/wiki/Using-NCrystal">on this page</a>). |
"void" |
|
xwidth |
m |
x-dimension (width) of sample, if box shape is desired |
0 |
|
yheight |
m |
y-dimension (height) of sample, if box or cylinder shape is desired |
0 |
|
zdepth |
m |
z-dimension (depth) of sample, if box shape is desired |
0 |
|
radius |
m |
radius of sample, if sphere or cylinder shape is desired |
0 |
|
absorptionmode |
0|1|2 |
0 : disable absorption. 1 : enable absorption via intensity reduction. 2 : enable absorption by terminating the tracking. |
1 |
|
multscat |
0|1 |
0 : disable multiple scattering. 1 : enable multiple scattering |
1 |
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Component source code found in file NCrystal_sample.comp.
The NCrystal wiki at https://github.com/mctools/ncrystal/wiki.