10.16  The KN_xrl_process McXtrace Component

A component implementing the Klein-Nishina cross section as a Union physics process

Identification

• Author: Mads Bertelsen and Erik B Knudsen

• Origin: ESS DMSC & DTU Physics & United Neux

• Date: 20.08.15

Description

This Union_process is based on the Incoherent.comp component originally written by Kim Lefmann and Kristian Nielsen

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 like this one 2) These are gathered into material definitions using Union_make_material 3) Geometries are placed using Union_box / Union_cylinder, 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.

Links

• Component source code found in file KN_xrl_process.comp.

• The test/example instrument Test_Phonon.instr.