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"The Reflection Grating Spectrometer on Constellation-X"The Constellation-X Reflection Grating Spectrometer (RGS) is designed to provide high-throughput, high-resolution spectra in the long wavelength band of 6 to 50 angstrom. In the nominal design an array of reflection gratings is mounted at the exit of the Spectroscopy X-ray Telescope (SXT) mirror module. The gratings intercept and disperse light to a designated array of CCD detectors. To achieve the throughput (A_eff > 1000 cm2 below 0.6 keV) and resolution (R > 300 below 0.6 keV) requirements for the instrument we are investigating two possible grating designs. The first design uses in-plane gratings in a classical configuration that is very similar to the XMM-Newton RGS. The second design uses off-plane gratings in a conical configuration. The off-plane design has the advantage of providing higher reflectivity and potentially, a higher spectral resolution than the in-plane configuration. In our presentation we will describe the performance requirements and the current status of the technology development.
Document ID
20060027783
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Cottam, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Optics
Meeting Information
Meeting: SPIE Conference
Location: Orlando, FL
Country: United States
Start Date: May 27, 2006
End Date: May 30, 2006
Sponsors: International Society for Optical Engineering
Funding Number(s)
WBS: WBS 492-01-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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