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10.11 The Union_make_material McXtrace Component
Component that takes a number of Union processes and constructs a Union material
Identification
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Author: Mads Bertelsen and Erik B Knudsen
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Origin: ESS DMSC & DTU Physics
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Date: 20.08.15
Description
Part of the Union components, a set of components that work together and thus separates geometry and physics within McXtrace. The use of this component requires other components to be used.
1) One specifies a number of processes using process components 2) These are gathered into material definitions using this component 3) Geometries are placed using Union_box/cylinder/sphere, assigned a material 4) A Union_master component placed after all of the above
Only in step 4 will any simulation happen, and per default all geometries defined before the master, but after the previous will be simulated here.
There is a dedicated manual available for the Union_components
Algorithm: Described elsewhere
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
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process_string |
string |
Comma seperated names of physical processes |
”NULL” |
|
my_absorption |
1/m |
Inverse penetration depth from absorption at standard energy |
|
|
absorber |
0/1 |
Control parameter, if set to 1 the material will have no scattering processes |
0 |
|
material_string |
string |
List of elements present in the material. Triggers a search for materials constants files. |
”NULL” |
|
init |
string |
Deprecated and unused. Accepted so that instruments written for McStas/McXtrace 3.8.7 and earlier, which name the Union_init component here, still compile. |
”” |
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Links
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Component source code found in file Union_make_material.comp.
