Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5501..339g&link_type=abstract
High-Energy Detectors in Astronomy. Edited by Holland, Andrew D. Proceedings of the SPIE, Volume 5501, pp. 339-345 (2004).
Astronomy and Astrophysics
Astronomy
Scientific paper
A focal plane array of high-pressure gas scintillation proportional counters (GSPC) for a High Energy X-Ray Observatory (HERO) has been developed at the Marshall Space Flight Center. The array consists of eight GSPCs and is a part of balloon-born payload scheduled to fly in May 2004. These detectors have an active area of ~ 20 cm2 each, and are filled with a high pressure (106 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 telescope"s x-ray optics which have response to 75 keV and a focal spot size of ~ 0.5 mm. The detector"s energy resolution, 5.0% FWHM at 60 keV, is adequate for resolving the broad spectral lines of astrophysical importance and for accurate continuum measurements. Results of the ground detector array testing are presented.
Apple Jeffery
Gubarev Mikhail V.
Ramsey Brian
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