High-efficiency detector array concept for x-ray astronomy based on CCDs

Christian M. Castelli; Mark R. Sims; Alan A. Wells

doi:10.1117/12.256039

31 October 1996 High-efficiency detector array concept for x-ray astronomy based on CCDs

Christian M. Castelli, Mark R. Sims, Alan A. Wells

Proceedings Volume 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII; (1996) https://doi.org/10.1117/12.256039
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The detection efficiency of charge coupled devices (CCDs) in the x-ray band is dependent on the thickness of the active depletion layer in the silicon. This is typically under 35 micrometer and limited by the purity of available epitaxial substrates. For x-ray imaging, this results in a reduced CCD detection efficiency above 8 keV. In this paper, we show that by using a novel illumination geometry, CCDs can detect high energy (up to 100 keV) x rays with reasonable efficiency and good energy resolution. A novel 2-D imaging had x-ray detector based on this geometry is discussed.

Citation Download Citation

Christian M. Castelli, Mark R. Sims, and Alan A. Wells "High-efficiency detector array concept for x-ray astronomy based on CCDs", Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); https://doi.org/10.1117/12.256039

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