The `Test_DiskChoppers2` Instrument

Site: Tests_optics
Author: Peter Willendrup
Origin: DTU
Date: September 2018

Simple test instrument that compares DiskChoppers with a simple, rotating Slit.

Identification

Simple test instrument that compares DiskChoppers with a simple, rotating Slit.
When ABSORBER is set, a slab of B4C is acts as absorbing medium.

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
chopper	int	chopper=0 selects DiskChopper, chopper=1 selects a rotating Slit	0
lambda	AA	Mean wavelength produced from the source	10
dlambda	AA	Halfwidth of wavelenghts produced from the source	9.9
deltay	m	Position of centre of rotation vs. beam in slit case	0.19
dx			0.016
nu	Hz	Chopper frequency	10
phase	deg	Chopper phase	0
ABSORBER	1	Flag to indicate if slab is B4C(=1) or perfect(=0)	0
tz	m	Thickness of B4C slab	0.001