Share Email Print
cover

Proceedings Paper

Performance of a gas scintillation proportional counter array for a high-energy X-ray observatory
Author(s): Mikhail V. Gubarev; Brian Ramsey; Jeffery Apple
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

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.

Paper Details

Date Published: 29 September 2004
PDF: 7 pages
Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); doi: 10.1117/12.552122
Show Author Affiliations
Mikhail V. Gubarev, Univ. Space Research Association/NASA Marshall Space Flight Ctr. (United States)
Brian Ramsey, NASA Marshall Space Flight Ctr. (United States)
Jeffery Apple, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5501:
High-Energy Detectors in Astronomy
Andrew D. Holland, Editor(s)

© SPIE. Terms of Use
Back to Top