FIELD: physics.
SUBSTANCE: probe installation and method allow to perform interoperational control of matrix photodetectors at liquid nitrogen temperature and various background conditions with counting and exclusion of defective elements based on the quality of the obtained image using an IR lens after performing two-point correction and estimating the volume diffusion length by sensitivity until the matrix pickup in an open type installation using a multi-contact probe head with a fixed arrangement of probes pressing matrix photodetectors to the pedestal located in a heat insulating cup filled with liquid nitrogen to a level not exceeding the top level of the pedestal.
EFFECT: accelerating the process of interoperational control of matrix photodetectors at liquid nitrogen temperature, where the thermal cycle time is mainly limited by the cooling time of the pedestal.
8 cl, 8 dwg
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