Component Manual for the Xray-Tracing Package McXtrace, version 3.8.6

10.3  The Union_master McXtrace Component

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

Identification

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

init

string

Name of Union_init component (typically ”init”, default)

”init”

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