Proceedings PaperImaging at Soft X-ray Wavelengths with High-Gain Microchannel Plate Detector Systems
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Multi-Anode Microchannel Array LMAMA) detector systems with formats of 256 x 1024 pixels and active areas of 6 x 26 mm2 are now under evaluation at visible, ultraviolet and soft x-ray wavelengths. Very-large-format version2s of the MAMA detectors with formats of 2048 x 2048 pixels and active areas of 52 x 52 mm are under development for use in the NASA Goddard Space Flight Center's Space Telescope Imaging Spectrograph (STIS). Open-structure versions of these detectors with CsI photocathodes can provide a high-resolution imaging capability at extreme ultraviolet (EUV) and soft x-ray wavelengths and can deliver a maximum count rate from each array in excess of 106 counts s-I. In addition, these detector systems have the unique capability to determine the arrival time of a detected photon to an accuracy of 100 ns or better. The construction, mode-of-operation and performance characteristics of the MAMA detectors are described and the program for the development of the very-large-format detectors is outlined.