The `Pore_c` Component

Single Pore as part of the Silicon Pore Optics (SPO) as envisioned for the ATHENA+ space telescope.

Identification

Site:
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, whereas they are straight sagitally. The primary parameter specifies whether this is a
primary or secondary mirror. If primary they mirror extends backwards.
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.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
radius_m	m	Ring radius of the upper (reflecting) plate of the pore at the optic centre.
Z0	m	Distance between optics centre plane and focal spot (essentially focal length).
xwidth	m	Width of the pore.
yheight	m	Height of the pore.
gap	m	Gap between the plate and the intersection plane with the hyperbolic section. (currently ignored)	0
chamferwidth	m	Width of side walls.	0
length			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).	""
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
primary		If non-zero, the pore is considered a primary reflector, and extends towards negative z. I.e. the entry plane is behind the z=0-plane. If zero, the pore is considered secondary	1
dalpha	deg	Offset to the alpha angle computed from the focal length. Useful for targeting the modified conical geometry (currently ignored).	0
waviness	rad	Waviness of the pore reflecting surface. The slope error is assumed to be uniformly distributed in the interval [-waviness:waviness].	0
longw		If non-zero, waviness is 1D and along the pore axis.	0

AT (	,	,		) RELATIVE
ROTATED (	,	,		) RELATIVE

McXtrace - An X-ray ray-trace simulation package

The Pore_c Component

Identification

Description

Input parameters

Links

The `Pore_c` Component