McXtrace - An X-ray ray-trace simulation package

[ Identification | Description | Input parameters | Links ]

The ATHENA_1sh_both 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.

Example: ATHENA_1sh_both.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
XWidth	m	The width of the user detector default is that of the ATHENA WFI large area detector	0.13312
YHeight	m	The height of the user detector default is that of the ATHENA WFI large area detector	0.13312
NX		Number of pixels along X in the user detector	1024
NY		Number of pixels along Y in the user detector.	1024
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"
primParab			1
secHyper			1

Links

• Source code for ATHENA_1sh_both.instr.
• The ATHENA web pages @ ESA

---

[ Identification | Description | Input parameters | Links ]

Generated for mcxtrace 3.5.24

---

Last Modified: Sunday, 06-Apr-2025 20:25:04 CEST