Wide field imager instrument for the Advanced Telescope for High Energy Astrophysics

Meidinger N, Nandra K, Plattner M, Porro M, Rau A, Santangelo A, Tenzer C, Wilms J (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Journal of Astronomical Telescopes, Instruments, and Systems Society of Photo-optical Instrumentation Engineers (SPIE)

Publisher: SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS

Book Volume: 1

Article Number: ARTN 014006

Journal Issue: 1

DOI: 10.1117/1.JATIS.1.1.014006

Abstract

The Advanced Telescope for High Energy Astrophysics (Athena) has been selected for ESA's L2 mission, scheduled for launch in 2028. It will provide the necessary capabilities to achieve the ambitious goals of the science theme "The Hot and Energetic Universe." Athena's x-ray mirrors will be based on silicon pore optics technology with a 12-m focal length. Two complementary focal plane camera systems are foreseen, which can be moved interchangeably to the focus of the mirror system: the actively shielded micro-calorimeter spectrometer X-IFU and the wide field imager (WFI). The WFI camera will provide an unprecedented survey power through its large field of view of 40 arc min with a high count-rate capability (similar to 1 Crab). It permits a state-of-the-art energy resolution in the energy band of 0.1 to 15 keV during the entire mission lifetime (e.g., full width at half maximum <= 150 eV at 6 keV). This performance is accomplished by a set of depleted P-channel field effect transistor (DEPFET) active pixel sensor matrices with a pixel size well suited to the angular resolution of 5 arc sec (on-axis) of the mirror system. Each DEPFET pixel is a combined detector-amplifier structure with a MOSFET integrated onto a fully depleted 450-mu m-thick silicon bulk. This manuscript will summarize the current instrument concept and design, the status of the technology development, and the envisaged baseline performance. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Authors with CRIS profile

Jörn Wilms Professur für Astronomie und Astrophysik

Involved external institutions

Eberhard Karls Universität Tübingen DE Germany (DE) Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics DE Germany (DE)

How to cite

APA:

Meidinger, N., Nandra, K., Plattner, M., Porro, M., Rau, A., Santangelo, A.,... Wilms, J. (2015). Wide field imager instrument for the Advanced Telescope for High Energy Astrophysics. Journal of Astronomical Telescopes, Instruments, and Systems, 1(1). https://doi.org/10.1117/1.JATIS.1.1.014006

MLA:

Meidinger, Norbert, et al. "Wide field imager instrument for the Advanced Telescope for High Energy Astrophysics." Journal of Astronomical Telescopes, Instruments, and Systems 1.1 (2015).

BibTeX: Download