Issue |
EPJ Web Conf.
Volume 280, 2023
RICAP-22, 8th Roma International Conference on Astroparticle Physics
|
|
---|---|---|
Article Number | 04004 | |
Number of page(s) | 4 | |
Section | Cosmic Rays | |
DOI | https://doi.org/10.1051/epjconf/202328004004 | |
Published online | 20 March 2023 |
https://doi.org/10.1051/epjconf/202328004004
New approaches for gamma-hadron separation at the IceCube Neutrino Observatory
Karlsruhe Institute of Technology, Institute for Astroparticle Physics,
Karlsruhe,
76021 Germany
* email: federico.bontempo@kit.edu
** https://icecube.wisc.edu/collaboration/authors/
Published online: 20 March 2023
The IceCube Neutrino Observatory located at the geographic South Pole is composed of two detectors. One is the in-ice optical array, which measures high-energy muons from air showers and charged particles produced by the interaction of high-energy neutrinos in the ice. The other is an array of ice-Cherenkov tanks at the surface, called IceTop, which is used both as veto for the in-ice neutrino measurements and for detecting cosmic-ray air showers. In the next decade, the IceCube-Gen2 extension will increase the surface coverage including surface radio antennas and scintillator panels on the footprint of an extended optical array in the ice. The combination of the current surface and in-ice detectors can be exploited for the study of cosmic rays and the search for PeV gamma rays. The in-ice detector measures the high-energy muonic component of air showers, whereas the signal in IceTop is dominated by the electromagnetic component. The relative size of the muonic and electromagnetic components is different for gamma-and hadron-induced air showers. Thus, the gamma-hadron separation of cosmic rays is attempted using machine learning techniques including deep learning. Here, different approaches are presented. Finally, the prospects for the detection of PeV photons with IceCube-Gen2 will be discussed.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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