Component Manual for the Neutron Ray-Tracing Package McStas, version 3.8.6

12.2  The Union_init McStas Component

Initialize component that needs to be place before any Union component

Identification

Description

Part of the Union components, a set of components that work together and thus sperates geometry and physics within McStas. 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

Links