The `DBD_IBM_Si_analyzer_BC` Instrument

Site: NIST
Author: Marcus H. Mendenhall (marcus.mendenhall@nist.gov)
Origin: NIST
Date: May '17

Mockup of 219/B002 DBD

Identification

This is a preliminary setup of the DBD with the Ge111 Johansson IBM
NIST DBD with IBM and bent crystal BC monochromator

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
a_distance_error	m	Logitudinal offset of source.	0.0
figure_radius_multiplier		Extra multiplicative factor to the crystal curvature.	1.0
lattice_radius_multiplier			1.0
beam_hor	m	Beam width of source.	0.01
beam_vert	m	Unscaled Beam height of source. Will be scaled with take_off angle.	0.00004
tails_integral		Integrated beam power in the source tails.	0.05
tails_width	m	Width of the source tails.	0.002
slit_1_vert	m	Vertical opening of 1st slit.	0.004
slit_1_hor	m	Horizontal opening of 1st slit.	0.01
slit_2_vert	m	Vertical opening of 2nd slit.	0.0002
slit_2_hor	m	Horizontal opening of 2nd slit.	0.02
slit_3_hor	m	Horizontal opening of 3rd slit.	0.02
slit_3_vert	m	Vertical opening of 3rd slit.	0.01
ibm_offset	m	Offset (rotational) of optical arm.	0.00
two_theta_si	deg.	Monochromator crystal scattering angle.	94.963
emin	keV	Lower energy to be simulated.	8.047
emax	keV	i Upper energy to be simulated.	8.0471
take_off	deg	Take off angle of source.	6.0
use_flat_source		Use a soimplified flat source approximation.	0
use_si_crystal		Activate the monochromator crystal.	1
si_hh		1st Miller index (h) of monochromator crystal.	3
si_kk		2nd index (k) of monochromator crystal.	3
si_ll		3rd Miller index (l) of monochromator crystal.	3