CAPSat is the first attempt at performing in-orbit laser annealing to heal damage due to constant space radiation. Laser annealing is a process of exposing the detector to a bright laser for a short period of time, which heals some of the radiation damage, and prolongs the detector’s lifetime in space. CAPSat performs this process in-orbit to repeatedly treat the detectors when they are not actively being used for quantum communication links. Previously, these tests took place in labs after being exposed to radiation at a particle accelerator thereby mimicking the expected radiation and healing in space.^[1][2]

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