[ Identification | Description | Input parameters | Links ]

The `Test_Mono` Instrument

Compares intensities of Monochromator components.

Identification

Site: Tests_optics
Author: A. Vickery, A. Prodi and E. Knudsen
Origin: NBI,Risø DTU Physics
Date: July 2011.

Description

Very simple setup to compare intensities diffracted by Monochromators.
It shows that implementations are equivalent.

The input parameter 'Mono' chooses which model to use:
0: Obsolete Perfect_crystal
1: Bragg_crystal - validated component
2: Bragg_crystal_bent - bent version of the above
3: Bragg_crystal_BC - variant of the above based on Mendenhall et. al., J. Appl. Cryst 2019
4: Bragg_crystal_bent_BC - variant of the above based on Mendenhall et. al., J. Appl. Cryst 2019
5: Bragg_crystal_simple - a simple mono with a static (flat) Darwin width.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
Mono		Which monochromator model to use.	1
lambda	AA	Source wavelength.	1.0
L1	m	Distance from source to monochromator.	10.0
OMM	deg	Rotation angle of monochromator, i.e. angle of incidence.	14.2208
TTM	deg	Scattering angle at which to put the detector.	28.4416
BEND	m	Curvature radius of the monochromator crystal lattice. Only relevant for Mono==2.	1
monsiz	m	Size (h and w) of PSD measuring diffracted beam.	5e-5

The Test_Mono Instrument

Identification

Description

Input parameters

Links

The `Test_Mono` Instrument