29 August 1977 High Resolution Imaging X-Ray Detector For Astronomical Measurements
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Proceedings Volume 0106, X-Ray Imaging; (1977) https://doi.org/10.1117/12.955472
Event: 1977 SPIE/SPSE Technical Symposium East, 1977, Reston, United States
Abstract
We describe the X-ray detector which will provide second-of-arc images for the HEAO-B X-ray observatory. The instrument uses microchannel plates as a photocathode surface and imaging photoelectron multiplier, and a crossed wire grid as a two-dimensional position-sensitive detector. Position determination is accomplished by electronic interpolation between the coarse grid wires. The detector provides the arrival time and position of each event which occurs with-in its field of view. We describe our measurements of the spatial resolution (15µm), temporal resolution (7.811s), image distortion (<10µm), uniformity of efficiency (< +10%), dark counting rate (0.2 cts cm-2 s-1), and quantum efficiency (10% at 1.54 key) of this detector. We also give a summary of the procedure which we have found useful during the initial turn-on of microchannel plates.
© (1977) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. P. Henry, J. P. Henry, E. M. Kellogg, E. M. Kellogg, U. G. Briel, U. G. Briel, S. S. Murray, S. S. Murray, L. P. Van Speybroeck, L. P. Van Speybroeck, P. J. Bjorkholm, P. J. Bjorkholm, } "High Resolution Imaging X-Ray Detector For Astronomical Measurements", Proc. SPIE 0106, X-Ray Imaging, (29 August 1977); doi: 10.1117/12.955472; https://doi.org/10.1117/12.955472
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