The `PhononSimple_process` Component

Port of PhononSimple to Union components

Identification

Site:
Author: Anders Komar Ravn, based on template by Mads Bertelsen and Phonon_Simple
Origin: University of Copenhagen
Date: 20.08.15

Description

Port of the PhononSimple component from the McStas library to the Union
components.

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 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.

Name	Unit	Description	Default
packing_factor	1	How dense is the material compared to optimal 0-1	1
unit_cell_volume	AA^3	Unit cell volume	13.8
interact_fraction	1	How large a part of the scattering events should use this process 0-1 (sum of all processes in material = 1)	-1
a	AA	fcc lattice constant	4.95
c	meV*AA	Velocity of sound	10
M	units	Nucleus atomic mass in units	207.2
b	fm	Scattring length	9.4
T	K	Temperature	290
DW	1	Debye-Waller factor	1
longitudinal	0/1	Simulate longitudinal branches	1
transverse	0/1	Simulate transverse branches	1
init	string	Name of Union_init component (typically "init", default)	"init"

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

The PhononSimple_process Component

Identification

Description

Input parameters

Links

The `PhononSimple_process` Component