Mirror module design of x-ray telescopes of eXTP mission

Date Issued
2019
Author(s)
•
•
•
•
•
•
Wang, J.
•
Yang, Y.
•
Xu, Y.
•
Chen, Y.
•
Sheng, L.
•
Yan, Y.
•
Qiang, P.
•
Zhao, B.
DOI
Abstract
The eXTP (enhanced X-Ray Timing and Polarimetry) mission is a Chinese science space mission developed in collaboration with many international countries. Devoted to observations in the X-ray band, with imaging, spectroscopic, timing and polarimetry capabilities, is now entering phase B. The payload includes 9 Spectroscopic Focusing Array (SFA) and 4 Polarimetry Focusing Array (PFA) telescopes. The SFA telescopes, equipped with SDDs, have a spatial resolution of 1 arcmin, while the PFA telescopes, equipped with imaging gas pixel photoelectric polarimeters, have a spatial resolution of 30 arcsec. Both optics work in the 0.5-10 keV range with a focal length of 5.25 m and a field of view of 12 arcmin. The technology used for the optics production is Nickel electroforming from super-polished mandrels, like many previous successful X-ray missions. The reflecting coating is a double layer Au+C, which ensures optimal response at high and low energies. The PFA and SFA have the same optical design, in order to minimize the number of mandrels to be produced. In this paper, we present the optical design of these telescopes assisted with raytracing and a preliminary concept for the mechanical design supported by FEM simulation.
Coverage
Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX
All editors
O'Dell, Stephen L.; Pareschi, Giovanni
Series
Volume
11119
Start page
1111904
Conferenece
Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX
Conferenece place
San Diego, California, United States
Conferenece date
11-15 August, 2019
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2019SPIE11119E..04B
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

1111904.pdf

Description
Pdf editoriale
Size

1.62 MB

Format

Adobe PDF

Checksum (MD5)

2fd108d928b757a797a1d8dd474afcb6