IXO/CAT Development


simulated CAT spectrum

Critical Angle Transmission Grating spectrometer development for the International X-Ray Observatory

The International X-ray Observatory (IXO, formerly Constellation-X) is a next-generation astronomical X-ray Observatory, a joint project between NASA, the European Space Agency (ESA), and the Japanese Aerospace Exploration Agency (JAXA). It is foremost a spectroscopic mission, and will be up to 100 times more powerful than currently operating X-ray observatories.

At MIT, the Space Nanotechnology Lab is developing Critical Angle Transmission gratings (CAT). We are currently studying design concepts using the CAT in a transmission grating spectrometer for IXO.

Here we will provide basic information and resources for spectrometer study.

These responses are for exploration of the scientific gains from high resolution using a prototype Critical Angle Transmmission grating spectrometer.

NOTE: None of the area or efficiency files have yet been endorsed by the Project. The models used here are our best current evaluation of component performance criteria.

Bibliography: Scientific White Papers, related memos and publications.

Bibliography: Design and Fabrication papers, related memos, and publications.


2010.01.07: Space Nanotechnology Lab's record aspect ratio for lattice-independent dry etch in silicon crystals for 200 nm-period CAT gratings. 200 nm-period CAT grating

This page was last updated Jan 11, 2010 by David P. Huenemoerder. To comment on it or the material presented here, send email to dph@space.mit.edu.
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