The `FZJ_KWS2_Lens` Instrument

Site: FZ_Juelich
Author: Henrich Frielinghaus
Origin: FZ Juelich
Date: June 2010

FZ Juelich KWS2 SANS, serving as test instrument for the Lens_simple component.

Identification

This instrument is a test instrument for the Lens_simple component.

Notice effect of gravitation on the final beam.

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lambda	AA	Mean wavelength of neutrons	20.15
dlambda	AA	Wavelength spread of neutrons (fwhm)	2.015
FLUX	1	Source flux normalization constant	1e8
NGblen	1	Defining source radius (is \sqrt(2)*NGblen)	0.03
Cblen	m	Dimension of rectangular guide	0.005
Clen	m	Distance source-guide	20.0
Dlen	m	Placement of final detector	20.0
Rlense	m	Radius of lens	0.025