The IceAct Cherenkov telescopes at the IceCube Neutrino Observatory

Since 2019 two Imaging Air Cherenkov Telescopes, called IceAct, measure the electro-magnetic component of air showers in the atmosphere above the IceCube Neutrino Observatory. This adds to the existing detectors IceTop and IceCube which are measuring the footprint of cosmic ray induced air showers on the surface and the high energy muonic component at a depth of more than 1.5km. The three independent measurements of the air shower parameters allow for event-by-event measurement of the cosmic ray composition and crosschecks between the detectors.

The IceAct telescopes are designed to be robust the harsh Antarctic conditions. One IceAct camera consists of 61 SiPM pixels in a hexagonal grid. Each pixel has a field of view of 1.5 degree resulting in an approximately 12 degree field of view per camera. A single tubus has a diameter of 50 cm. Machine learning algorithms are used to determine the air shower properties and perform a composition analysis. We present the quality parameters for our data selection and the status of this analysis.