Preliminary assessment of the ATHENA/WFI non-X-ray background

Marco Barbera, Chris Tenzer, Alejandro Guzman, Sebastian Diebold, Andrea Santangelo, Emanuele Perinati, Marco Barbera

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We present a preliminary assessment of the non-X-ray background for the WFI on board ATHENA conducted at IAAT in the context of the collaborative background and radiation damage working group activities. Our main result is that in the baseline configuration originally assumed for the camera the requirement on the level of non-X-ray background could not be met. In light of the results of Geant4 simulations we propose and discuss a possible optimization of the camera design and pinpoint some open issues to be addressed in the next phase of investigation. One of these concerns the possible contribution to the non-X-ray background from soft protons and ions funneled to the focal plane through the optics. This is not quantified at this stage, here we just briefly report on our ongoing activities aimed at validating the mechanisms of proton scattering at grazing incidence.
Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalExperimental Astronomy
Volume44
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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