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Performance of Gas Scintillation Proportional Counter Array for High-Energy X-Ray ObservatoryA focal plane array of high-pressure gas scintillation proportional counters (GSPC) for a High Energy X-Ray Observatory (HERO) is developed at the Marshall Space Flight Center. The array is consisted from eight GSPCs and is a part of balloon born payload scheduled to flight in May 2004. These detectors have an active area of approximately 20 square centimeters, and are filled with a high pressure (10(exp 6) Pa) xenon-helium mixture. Imaging is via crossed-grid position-sensitive phototubes sensitive in the UV region. The performance of the GSPC is well matched to that of the telescopes x-ray optics which have response to 75 keV and a focal spot size of approximately 500 microns. The detector's energy resolution, 4% FWHM at 60 keV, is adequate for resolving the broad spectral lines of astrophysical importance and for accurate continuum measurements. Results of the on-earth detector calibration will be presented and in-flight detector performance will be provided, as available.
Document ID
20040082316
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Gubarev, Mikhail
Ramsey, Brian
Apple, Jeffery
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Astronomy
Meeting Information
Meeting: SPIE Astronomical Telescope and Instrumentation
Location: Glasgow, Scotland
Country: United Kingdom
Start Date: June 21, 2004
End Date: June 25, 2004
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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