The `FZJ_BenchmarkSfin2` Instrument

Site: FZ_Juelich
Author: Henrich Frielinghaus
Origin: FZ Juelich
Date: 2013

Test instrument for the H Frielinghaus SANS_benchmark2 component. The below test uses defaults of the instrument (SANS_benchmark2 modnum=11)

Identification

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lbdmin	AA	Minimum wavelength produced at source	2.00
lbdmax	AA	Maximum wavelength produced at source	8.5
NGbend	m	Bender dimension, horizontal	0.053
NGblen	m	Bender dimension, vertical	0.03
Clen	m	Collimation length	8.0
SampD	m	Sample 'half-dimension' (geometry is actually 2 x value)	0.01
bendL	rad	Bender angle of deflection	5.0
bendR	m	Bender radius of curvature	385.0
bendM	1	Bender 'outer curve mirror m-value'	7.0
bendiM	1	Bender 'inner curve mirror m-value'	7.0
dfltM	1	Bender 'top/bottom mirror m-value'	1.5
vorPl	m	If >0, post-bender Guide-element	0.5
PolLen	m	If >0, length of polariser	0.492
PolTot	m	Total primary optic length	2.30
MDOWN	1	m-value of the Fe/Si-wafer for spin down neutrons	3.6
Min	1	m-value of material for top. horz. mirror of the outer guide	1.5
cnum	1	'Degree of beam-polarisation'. Set to 0.0 for no polarizer as for benchmarking the normal SANS samples, to 2.0 for two cavities, keep default values as much as possible	0.00
ROT	deg	Pre-polariser cavity-rotation angle arounz (only if polarised mode)	0.0
modnum	1	Sample 'mode' (see mcdoc for SANS_benchmark2 component)	11.0
sglscatt	1	Sample control of single/multiple scattering (see mcdoc for SANS_benchmark2 component)	1.0
incs	1	Sample fraction of incoherently scattered neutrons (see mcdoc for SANS_benchmark2 component)	0.0005