Status and plans for the instrumentation of the IceCube Surface Array Enhancement
August 15, 2023
The surface array of IceCube, IceTop, operates primarily as a cosmic-ray detector, as well as
a veto for astrophysical neutrino searches for the IceCube in-ice instrumentation. However,
the snow accumulation on top of the IceTop detectors increases the detection threshold and
attenuates the measured IceTop signals. Enhancing IceTop by a hybrid array of scintillation
detectors and radio antennas will lower the energy threshold for air-shower measurements, provide
more efficient veto capabilities, enable more accurate cosmic-ray measurements, and improve
the detector calibration by compensating for snow accumulation. After the initial commissioning
period, a prototype station at the South Pole has been recording air-shower data and has successfully
observed coincident events of both the scintillation detectors and the radio antennas with the IceTop
array. The production and calibration of the detectors for the full planned array has been ongoing.
Additionally, one station each has been installed at the Pierre Auger Observatory and the Telescope
Array for further R&D of these detectors in different environmental conditions. This contribution
will present the status and future plans of the hybrid detector stations for the IceCube Surface Array Enhancement.
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