TEST BENCH TO STUDY THERMAL MODES OF PHOTODETECTORS IN AEROSPACE APPLICATIONS

One of the main goal while designing criostatting and thermal control systems of spacecraft is to determine the heat flow from photodetectors. The article describes a thermal vacuum bench for studying the thermal modes of photodetectors. Parameters of the used measuring devices, electrical circuit of connections and vacuum circuit of bench are represented. Thermal vacuum bench allows to experimentally simulate various thermal mode of large-format photodetector of various types for aerospace applications under simulated standard operating conditions of on-board equipment in terms of vac-uum and temperature impacts. Thermal vacuum bench allows to determine temperatures at specified points of the photodetector design in the range from 85 to 350 K, heat loads from the photosensitive element and the case of the photodetector, taking into account the influence design of the optical system, pressure and spectrum of gas masses inside the vacuum chamber of the bench in real time.

Authors: А. N. Sokolov, M. Z. Schedrinsky, K. V. Rybas, M. G. Vorobev, V. A. Sinkova, A. I. Koldyba, L. N. Rozanov, M. P. Larin

Direction: Physics

Keywords: Thermal vacuum bench, thermal modes, photodetector

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