The `Powder_validation` Instrument

Validation of Union powder against standard PowderN component.

Identification

Validation of Union powder against standard PowderN component.

(Test cases in bold)

Test: comp_select=1 Detector: detectors_m4pi_I=67635.2
Test: comp_select=2 Detector: detectors_m4pi_I=67635.2
Test: comp_select=1 Detector: PSDlin_scattering_I=5.79875
Test: comp_select=2 Detector: PSDlin_scattering_I=5.79875
Test: comp_select=1 d_phi=0 Detector: PSD2lin_scattering_I=5
Test: comp_select=2 d_phi=0 Detector: PSD2lin_scattering_I=5
Test: comp_select=1 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: detectors_m4pi_I=3750
Test: comp_select=2 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: detectors_m4pi_I=3750
Test: comp_select=1 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: PSDlin_scattering=2.88
Test: comp_select=2 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: PSDlin_scattering=2.88
Test: comp_select=1 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: Banana_monitor_I=12.5
Test: comp_select=2 div=0.5 dE=1 d_phi=0 sigma_inc=3.4176 sigma_abs=2.9464 Vc=1079.1 material_data_file=Na2Ca3Al2F14.laz Detector: Banana_monitor_I=12.5

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
comp_select	1	1=Union components, 2=PowderN	1
material_data_file	string	Powder sample definition	"Al.laz"
E0	meV	Source mean energy	100
dE	meV	Source energy spread	2
sample_radius	m	Sample radius	0.01
sample_height	m	Sample height	0.01
pack		Sample packing factor	1
sigma_inc	barns	Sample incoherent cross-section	0.0328
sigma_abs	barns	Sample absorption cross-section	0.924
Vc	AA	Sample unit cell volume	66.4
geometry_interact		p_interact for the sample	0.5
incoherent_fraction		Fraction of statistics assigned for incoherent scattering	0.2
div	deg	Source divergence (angular w and h)	1.5
d_phi	deg	Restriction of Debye-Scherrer cones around scattering plane 0=full illumination	30