On-orbit performance of the DAMPE BGO calorimeter
July 06, 2021
The DArk Matter Particle Explorer (DAMPE) is the first Chinese cosmic-ray direct detection experiment. It has been operating smoothly on-orbit since its successful launch at the end of
2015. Currently, its sub-detectors and the satellite are in good working order. The DAMPE
payload employs a BGO Calorimeter for energy measurements, trigger and e/p identification.
The calorimeter is constructed of 308 BGO crystals, and PMTs are coupled to the crystals with
optical filters to readout scintillation light. In this work, we present the status and performance of
the calorimeter, including status of detector units, energy measurement, especially in TeV range,
detector endurance, and long term performance in a duration of 65 months.
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