The `ATHENA_1ring` Instrument

Single pore version 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 a single ring 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 porenumber.
At present, the porenumber really means ring number.

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_1ring.instr shellnumber=3

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
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		Actually the ring number.	1
ringfile		File which contains details for the meta shells.	"ref_design_breaks.txt"
geomfile			"ATHENA_rings_1_20.dat"

McXtrace - An X-ray ray-trace simulation package

The ATHENA_1ring Instrument

Identification

Description

Input parameters

Links

The `ATHENA_1ring` Instrument