The `Unittest_SANS_benchmark2` Instrument

Site: Tests_samples
Author: Peter Willendrup
Origin: ESS
Date: April 2023

Test instrument for the SANS_benchmark2 component. No guide / velocity selector.

Identification

Very simple test instrument for the SANS_benchmark2 component from H. Frielinghaus.

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lambda	AA	Mean wavelength of neutrons	6
dlambda	AA	Wavelength spread of neutrons	0.05
r	AA	Radius of scattering hard spheres	150
PHI	1	Particle volume fraction	1e-3
Delta_Rho	cm^-2	Scattering length density	6e10
frac_dir	1	Fraction of statistics for direct beam	0.03
frac_inc	1	Fraction of statistics for incoherent scattering in scattered beam	0.01
modnum	int	Sample "modle number" from SANS_benchmark2	1