Name

Unit

Description

Default

zwidth

m

Width of each crystal without bending.

NULL

yheight

m

Height of each crystal without bending.

NULL

xthickness

m

Thickness of each crystal without bending.

NULL

radius_x

m

Radius of the circle the monochromator bends on in the plane. Can be negative.

NULL

radius_y

m

Radius of the (very large) circle the monochromator bends on as a side effect of the horizontal bending. The code assumes that it is so small that it does not affect the points of intersection appreciatively of the crystal.

NULL

angle_to_cut_horizontal

degrees

Angle between cut and normal of crystal slab, horizontally

NULL

mosaicity

arcmin

Gaussian mosaicity of the crystal. Always the horizontal mosaicity

NULL

mosaic_anisotropy

1

Anisotropy of the mosaicity, changes vertical mosaicity to be mosaic_anisotropy*mosaicity

NULL

domainthickness

μm

Thickness of the crystal domains.

NULL

temperature

K

Temperature of the monochromator in Kelvin.

NULL

plane_of_reflection

string

The plane of reflection from the material. The list of possible reflections can be seen in the source code. Each plane must be separated by a ";", like "Si400;Si111".

"Si400"

x_pos

vector

x-Position of each crystal

NULL

y_pos

vector

y-Position of each crystal

NULL

z_pos

vector

z-Position of each crystal

NULL

x_rot

vector

Rotation around x-axis for each crystal

NULL

y_rot

vector

Rotation around y-axis for each crystal

NULL

z_rot

vector

Rotation around z-axis for each crystal NOTE: Rotations happen around x, then y, then z.

NULL

n_crystals

1

Number of crystals in your array.

1

optimize

1

Flag to tell if the component should optimize for reflections or not.

0

verbose

1

Verbosity of the monochromator. Used for debugging.

0

n_reflections

1

The maximum number of reflections a neutron can undergo in the crystal array.

100

draw_as_rectangles

1

Draw the monochromators as boxes. DOES NOT WORK WHEN USING _rot parameters.

0