Abstract
We are developing imaging and photon counting UV-MCP detectors, which are sensitive in the wavelength range from far ultraviolet to near ultraviolet. A good quantum efficiency, solar blindness and high spatial resolution is the aim of our development. The sealed detector has a Cs-activated photoactive layer of GaN (or similarly advanced photocathode), which is operated in semitransparent mode on (001)-MgF2. The detector comprises a stack of two long-life MCPs and a coplanar cross strip anode with advanced readout electronics. The main challenge is the flawless growth of the GaN photocathode layer as well as the requirements for the sealing of the detector, to prevent a degradation of the photocathode. We present here the detector concept and the experimental setup, examine in detail the status in the production and describe the current status of the readout electronics development.
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This work is funded by the Deutsches Zentrum für Luft- und Raumfahrt (DLR) under grant 50 QT 1501.
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This article belongs to the Topical Collection: UV Surveys, the Needs and the Means. Guest Editors: Ana I. Gómez de Castro, Noah Brosch.
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Conti, L., Barnstedt, J., Hanke, L. et al. MCP detector development for UV space missions. Astrophys Space Sci 363, 63 (2018). https://doi.org/10.1007/s10509-018-3283-4
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DOI: https://doi.org/10.1007/s10509-018-3283-4