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T: Fachverband Teilchenphysik

T 59: Neutrino Astronomy III

T 59.5: Vortrag

Mittwoch, 18. März 2026, 17:15–17:30, KS H C

Adapting the Advanced Northern Tracks Selections Neural Network for the IceCube Upgrade — •Sönke Schwirn, Shuyang Deng, Lasse Düser, Hasti Maghsoudipour, Philipp Soldin, Christopher Wiebusch, and Marco Zimmermann for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen

The IceCube Neutrino Observatory is a neutrino detector located at the South Pole, consisting of over 5000 Digital Optical Modules (DOMs), each containing a single photomultiplier tube (PMT). In winter 2025/26, the IceCube Upgrade was deployed, including around 400 newly developed multi-PMT modules (mDOMs). Each mDOM contains 24 PMTs, providing in-module directionality information and increased effective area. A denser spacing of the modules also enables the detection threshold to be lowered to a few GeV. These new modules require modifications to existing event reconstruction methods. The Advanced Northern Tracks Selection (ANTS), developed for the original single-PMT DOMs, uses a multi-stage neural network approach that utilizes the full event information as measured by the DOMs for event selection and reconstruction of event parameters such as the particle direction and energy. This talk presents modifications of the ANTS network architecture to include the mDOMs of the IceCube Upgrade and discusses reconstruction performance at low energies.

Keywords: IceCube Upgrade; Advanced Northern Tracks Selection; mDOM