Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 33: Cosmic Rays VI
T 33.1: Talk
Tuesday, March 16, 2021, 16:00–16:15, Th
The hybrid detector stations of the IceCube surface array enhancement — •Thomas Huber for the IceCube collaboration — Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)
The IceCube Collaboration foresees to upgrade IceTop, the present surface array, with scintillation
detectors augmented by radio antennas. As one of several goals the detectors
will be used to measure and mitigate the effects of snow accumulation on the IceTop tanks:
The increasing energy threshold and efficiency loss are nowadays the sources of the largest
systematic uncertainties in shower reconstruction and mass composition analysis. In addition, the
enhancement will provide useful experience for the development of next generation (IceCube-Gen2) neutrino detectors.
A full prototype hybrid station was installed near the center of the IceTop array. The station features custom-designed DAQ electronics and consists of three radio antennas, sensitive in the MHz region and eight scintillation detectors, each having an active area of 1.5 m2 plastic scintillators, coupled via wavelength-shifting fiber and read out by a Silicon Photomultiplier (SiPM).
In this talk the DAQ and detector R&D decisions, the calibration methods and the performance are reviewed and results from more than three years of operation of the hybrid station are shown. Several thousand air-shower events have been measured in coincidence with IceTop. In addition, the future plans for instrumenting the whole IceTop surface with scintillation detectors and radio antennas will be presented.