The Soft X-ray Imager (SXI) on board the EXIST mission

G. Tagliaferri; S. Basso; P. Conconi; G. Pareschi; A. Bazzano; P. Caraveo; J. E. Grindlay; L. Natalucci; P. Ubertini; M. Uslenghi; G. Villa

doi:10.1117/12.827372

31 August 2009 The soft x-ray imager (SXI) on board the EXIST mission

G. Tagliaferri, S. Basso, P. Conconi, G. Pareschi, A. Bazzano, P. Caraveo, J. E. Grindlay, L. Natalucci, P. Ubertini, M. Uslenghi, G. Villa

Author Affiliations +

Proceedings Volume 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV; 743706 (2009) https://doi.org/10.1117/12.827372
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

The Energetic X-ray Imaging Survey Telescope (EXIST) is a mission that has been studied for the NASA Physics of the Cosmos Program. EXIST will continuously survey the full sky by scanning for 2-years (with 2-3 interruptions per day for GRB follow-up) followed by a 3-years pointing phase. The mission includes three instruments: a High Energy coded mask Telescope; a 1.1m aperture optical-IR Telescope; and a Soft X-ray Imager (SXI), sensitive in the 0.1-10 keV band. SXI is proposed as a contribution of ASI-Italy, fully developed by Italian institutes. The current optical design foresees 26 shells providing an effective area comparable to one XMM-Newton mirror module up to 3 keV and somewhat lower from 3 to 10 keV. The realization of these shells is based on the well-proven Nichel replication-process technology. Here we will present the optical design of the SXI mirror module and describe its characteristics in term of effective area and imaging capability, summarizing also the characteristics of the full SXI telescope.

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G. Tagliaferri, S. Basso, P. Conconi, G. Pareschi, A. Bazzano, P. Caraveo, J. E. Grindlay, L. Natalucci, P. Ubertini, M. Uslenghi, and G. Villa "The soft x-ray imager (SXI) on board the EXIST mission", Proc. SPIE 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV, 743706 (31 August 2009); https://doi.org/10.1117/12.827372

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