Paper 13093-29
Paper 13093-29
Low temperature proton irradiation with DEPFETs for Athena’s Wide Field Imager
17 June 2024 • 14:10 - 14:25 Japan Standard Time | Room G414/415, North - 4F
Abstract
The Wide Field Imager (WFI), one of two instruments on ESA's next large X-ray mission
Athena, is designed for imaging spectroscopy of X-rays in the range of 0.2 keV to 15 keV. The focal plane consists of back-illuminated DEPFET sensors with high radiation tolerance. The main mechanism of degradation will be the increase of dark current due to displacement damage caused primarily by high energy protons. We investigate the effect of 62.4 MeV protons on the detector when irradiated at the operating temperature of 213 K. A total dose equivalent to 3.4 ∙ 109 10-MeV protons/cm2 was applied. Annealing effects at different temperatures were examined.
Presenter
Valentin Emberger
Max-Planck-Institut für extraterrestrische Physik (Germany)
Valentin Emberger graduated in physics at the Humboldt-University of Berlin in 2011 about III-V semiconductor heterostructures. His professional experience includes a research stay at the University of Basel, Switzerland dealing with thin-film deposition and a short-term position for science communication and outreach at DESY. Since 2012 he is working at the Max-Planck-Institute for extraterrestrial physics on the development, test and qualification of spectroscopic single photon X-ray detectors for space telescopes, i.e. eROSITA and ATHENA.