16 - 21 June 2024
Yokohama, Japan
Conference 13093 > Paper 13093-182
Paper 13093-182

Ray-traced effective area and angular resolution of NewAthena’s optics

On demand | Presented live 17 June 2024

Abstract

The recently reformulated NewAthena’s mirror assembly uses Silicon Pore Optics technology. This paper aims to assess and confirm the latest mirror geometry's ability to meet the mission’s science goals. Ray-tracing simulations of NewAthena’s SPO mirror assembly have been performed using the ray-tracing tool SPORT, and used to evaluate the optics' performance based on effective area and angular resolution. All variants are found to produce an effective area at 1 keV of around 1.24 m², well beyond the scientific requirement of 1.1 m². All variants are shown, when assuming a perfectly shaped and aligned mirror that is perfectly smooth, to have an intrinsic PSF that is an order of magnitude below the scientific requirement. Comparing these intrinsic PSF's, the secondary polynomial performs best at energies below 7.5 keV. Above this energy, the equal polynomial variant performs best. A phenomenon is also shown where shifting destructive interference causes periodic peaks and troughs in the PSF HEW of individual rings of the optics, though this effect is not seen in the PSF HEW of the entire optics.

Presenter

DTU Space (Denmark)
Presenter/Author
DTU Space (Denmark)
Author
DTU Space (Denmark)
Author
DTU Space (Denmark)
Author
Sara Svendsen
DTU Space (Denmark)
Author
Diego Paredes Sanz
DTU Space (Denmark)
Author
DTU Space (Denmark), Copenhagen Atomics A/S (Denmark)
Author
INAF - Osservatorio Astronomico di Brera (Italy)
Author
INAF - Osservatorio Astronomico di Brera (Italy)
Author
Ivo Ferreira
European Space Agency (Netherlands)
Author
European Space Agency (Netherlands)