Date: Feb. 2017
Version: 1.1
Release: McXtrace 1.2
Origin: DTU Physics, DTU Space
Single Pore as part of the Silicon Pore Optics (SPO) as envisioned for the ATHENA+ space telescope.
Identification
Author: Erik B Knudsen and Desiree D. M. Ferreira
Origin: DTU Physics, DTU Space
Date: Feb. 2016
Description
A single pore is simulated, which may have thick walls. The top and bottom are curved cylindrically
azimuthally, and according to the Wolter I optic lengthwise (sagitally). A parameter specifies
whether this is hyperbolic or parabolic.
The azimuthal curvature is defined by the parameter radius. This refers to the center of the pore. I.e the top
and bottom plates have radius of curvature and respectively.
To intersect the Wolter I plates we take advatage of the azimuthal symmetry and only consider the radial component
of the photon's wavevector.
Example: MM_p( pore_th=0, ring_nr=1, Z0=12, pore_width=0.83e-3 , pore_height=0.605e-3, mirror_reflec="mirror_coating_unity.txt", R_d=0, size_file="ref_design_breaks.txt")
Input parameters
Parameters in boldface are required;
the others are optional.
Name
Unit
Description
Default
pore_th
m
Thickness of the pore walls (plates)
ring_nr
1
Ring number; selects the data block read from size_file
Z0
m
Distance between optics centre plane and focal spot (essentially focal length).
pore_height
m
Height of the pore.
pore_width
m
Width of a single pore
chamfer_width
m
Width of side walls.
0
gap
m
Gap between the plate and the intersection plane with the hyperbolic section.
0
zdepth
m
Currently not used by the component
0
mirror_reflec
Data file containing reflectivities of the reflector surface (TOP).
""
bottom_reflec
Data file containing reflectivities of the bottom surface (BOTTOM).
""
side_reflec
Data file containing reflectivities of the side walls (LEFT and RIGHT).
""
size_file
str
Table file with the per-ring geometry, read with block number ring_nr
""
non_specular_file
str
Data file describing non-specular reflectivity
""
R_d
Default reflectivity value to use if no reflectivity file is given. Useful f.i. is one surface is reflecting and the others absorbing.
1
waviness
rad
Waviness of the reflecting surface. The slope error is assumed to be uniformly distributed in the interval [-waviness:waviness].
0
longw
1
If non-zero, waviness is 1D and along the pore axis.