[ Identification | Description | Input parameters | Links ]

# The `Union_init` Component

Initialize component that needs to be place before any Union component

## Identification

- Site:
- Author: Mads Bertelsen
- Origin: ESS DMSC
- Date: 20.08.15

## 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 |

AT ( | , | , |  | ) RELATIVE |  |
ROTATED ( | , | , |  | ) RELATIVE |

## Links

- Source code for `Union_init.comp`.

[ Identification | Description | Input parameters | Links ]