16 - 21 June 2024
Yokohama, Japan
Conference 13093 > Paper 13093-30
Paper 13093-30

Spectroscopic performance of detectors for Athena’s WFI: measurements and simulation

17 June 2024 • 14:25 - 14:40 Japan Standard Time | Room G414/415, North - 4F

Abstract

The depleted p-channel field effect transistor is the chosen sensor type for the Wide Field Imager of the Athena mission. It will be used in two types of cameras. One will enable observations of a field of view of 40′ × 40′ by using an array of four 512 × 512 pixel sensors in a 2 × 2 configuration. A second, small one is designed to investigate bright, point-like sources with a time resolution of up to 40 μs. Sensors of final size, layout, and technology were fabricated, assembled and characterised. Also, first results from the flight production are available and confirm the excellent performance. In order to be able to estimate the future performance of degraded detectors, a simulation was developed that takes into account the non-analytical threshold effects on the basis of measurement results. We present the measurement analysis and the comparison of simulated and measured values as well as first attempts to use the Monte Carlo simulation to predict performance results based on noise measurements.

Presenter

Johannes Müller-Seidlitz
Max-Planck-Institut für extraterrestrische Physik (Germany)
Presenter/Author
Johannes Müller-Seidlitz
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Robert Andritschke
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Valentin Emberger
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Michael Bonholzer
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Halbleiterlabor der Max-Planck-Gesellschaft (Germany)
Author
Astrid Mayr
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Anna-Katharina Schweingruber
Max-Planck-Institut für extraterrestrische Physik (Germany)
Author
Wolfgang Treberspurg
University of Applied Sciences Wiener Neustadt (Austria)