Off-plane x-ray grating spectrometer camera for IXO

Murray, Neil J.; Holland, Andrew D.; Harriss, Richard D.; Tutt, James H.; Barber, Simeon J.; Pool, Peter; Endicott, James; Burt, David; Walton, Dave; Page, Mat; McEntaffer, Randall L.; Schultz, Ted; Cash, Webster C.; Lillie, Chuck and Casement, Suzanne (2010). Off-plane x-ray grating spectrometer camera for IXO. Proceedings - SPIE the International Society for Optical Engineering, 7742(77420X)



The International X-ray Observatory (IXO) is a merger of the former ESA XEUS and NASA Constellation-X missions, with additional collaboration from JAXA, proposed for launch ~2020. IXO will address the leading astrophysical questions in the ‘hot universe’ through its breakthrough capabilities in X-ray spectroscopy. The mission covers the 0.1 to 40 keV energy range, complementing the capabilities of the next generation observatories, such as ALMA, LSST, JWST and 30 meter ground-based telescopes. An X-ray Grating Spectrometer is baselined to provide science in the energy range 0.3-1.0 keV at a spectral resolution of E/ΔE > 3,000 with an effective area greater than 1,000 cm2. This will require an array of soft X-ray enhanced CCDs operating at a modest frame rate to measure the diffracted light in both position and energy. Here we describe the baseline camera for the off-plane XGS instrument using mature CCD technology.

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