16 September 1994 Development of a hybrid gas detector/phoswich for hard x-ray astronomy
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Abstract
A hybrid detector is under development for use as a balloon-borne instrument in hard x-ray astronomy. The detector provides broad band coverage by coupling an optical avalanche chamber to a phoswich. The optical avalanche chamber yields superior instrument response at low energies while the scintillator takes over at the higher energies where the gas becomes transparent: at 25 keV, the addition of the gas chamber improves the energy resolution by a factor of 2.5 and the spatial resolution by a factor of 10 as compared to the stand-alone response of the phoswich. A half-scale prototype instrument is being constructed for test purposes and to help resolve a number of design questions involving the coupling of the two components.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marsha M. Pimperl, Marsha M. Pimperl, Brian D. Ramsey, Brian D. Ramsey, Robert A. Austin, Robert A. Austin, Takahisa Minamitani, Takahisa Minamitani, Martin C. Weisskopf, Martin C. Weisskopf, Jonathan E. Grindlay, Jonathan E. Grindlay, Kenneth S. K. Lum, Kenneth S. K. Lum, Raj P. Manandhar, Raj P. Manandhar, } "Development of a hybrid gas detector/phoswich for hard x-ray astronomy", Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); doi: 10.1117/12.186805; https://doi.org/10.1117/12.186805
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