McXtrace - An X-ray ray-trace simulation package

[ Identification | Description | Input parameters | Links ]

The Union_master Component

The Master Union assembles specifications (e.g. processes, materials, geometries).

Identification

• Author: Mads Bertelsen and Erik B Knudsen
• Origin: ESS DMSC & DTU Physics
• Date: 20.08.15

Description

Part of the Union components, a set of components that work together and thus
sperates 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 Union_make_material
3) Geometries are placed using Union_box/cylinder/sphere, assigned a material
4) This master component placed after all of the above

Only in step 4 will any simulation happen, and per default all geometries
defined before this 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
verbal	0/1	Toogles terminal output describing the defined simulation	1
list_verbal	0/1	Toogles information of all internal lists in intersection network	0
finally_verbal	0/1	Toogles information about cleanup performed in finally section	0
allow_inside_start	0/1	Set to 1 if rays are expected to start inside a volume in this master	0
enable_tagging	0/1	Enable tagging of ray history (geometry, scattering process)	0
history_limit	1	Limit the number of unique histories that are saved	300000
enable_conditionals	0/1	Use conditionals with this master	1
inherit_number_of_scattering_events	0/1	Inherit the number of scattering events from last master	0
display_mode	0/1/2	Volume display in mcdisplay: 0 follows --trace, 1 forces lines, 2 polyhedra (only with --trace=2, --trace=1 always gives lines)	0
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.	""

AT (	,	,		) RELATIVE		Generate to clipboard
ROTATED (	,	,		) RELATIVE

Links

• Source code for Union_master.comp.

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[ Identification | Description | Examples | Input parameters | Links ]

Generated on mcxtrace 3.10.2

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Last Modified: Monday, 02-Nov-2026 22:21:08 CET