The `ATHENA_1shell` Instrument

Single shell model of the ATHENA SPO-optic in use as telescope.

Identification

Site: AstroX_ESA
Author: Erik B Knudsen & Desiree D. M. Ferreira (email)
Origin: DTU Physics/DTU Space
Date: 12/12/2016

Description

A model of the ATHENA-telescope using just a single shell as optical element.
That means to make use of this instrument
it is necessary to run a series of simulation while varying the input parameter shellnumber.

The model needs as input a file geomfile, which contains (in ascii) tabled details about the geometry of the shells.
The data in the geomfile is assumed to be in the format:
#row  L/m  rad_h/m  rad_m/m  rad_p/m  width/m
...
row: running index for the rows/rings
L: The length of the plates for this ring
rad_h: The radius at the "hyperbolic" end of the optic. At the detector end.
rad_m: The radius at the midpoint of the optic. This is the reference.
rad_p: The radius at the "parabolic" and of the optic. At the source end.
width: pore width ?

Example: ATHENA_1shell.instr shellnumber=1

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
FL	m	The focal length of the optical system	12
optics_dist	m	The distance between souce and optic. In space this would be quite large :-).	10
SRC_POS_X	m	Displacement of source along X	0
SRC_POS_Y	m	Displacement of source along Y	0
offaxis_angle	arcmin	Angle of collimated light from source	0
drx			0
dry			0
drz			0
reflectivity		Data file containing reflectivities (such as from IMD)	"mirror_coating_unity.txt"
E0	keV	Central energy of X-rays	5
dE	keV	Half spread of energy spectrum to be emitted from source	0.001
shellnumber		The row number for the miror module. This defines the shell.	1
geomfile		File which contains the geometry of the pores (i.e. radii,lengths)	"ATHENA_rings_1_20.dat"

McXtrace - An X-ray ray-trace simulation package

The ATHENA_1shell Instrument

Identification

Description

Input parameters

Links

The `ATHENA_1shell` Instrument