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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 1: AKPIK I

AKPIK 1.2: Vortrag

Mittwoch, 1. April 2020, 16:45–17:00, H-HS XII

aict-tools -- Event Reconstruction for Imaging Air Cherenkov Telescopes — •Maximilian Nöthe and Lukas Nickel — Exp. Physik 5, TU Dortmund, Otto-Hahn-Str. 4a, 44227 Dortmund

Imaging Air Cherenkov Telescopes (IACTs) cover the highest energy ranges in the electromagnetic spectrum of astronomy. These telescopes record the faint, nano-second scale flashes of Cherenkov radiation emitted by extensive air showers.

All IACTs face the same three reconstruction tasks: for each event, the primary particle's energy, direction and particle type have to be estimated. The particle type classification is necessary, as most extensive air showers are induced by charged cosmic rays.

Most commonly, IACTs record multiple time slices for each pixel in the camera for each shower, which is subsequently reduced to a few parameters describing each event.

The aict-tools use classical machine learning approaches as implemented by scikit-learn to reconstruct the gamma-ray properties from these image parameters.

The package provides executables to train, validate and apply models for all reconstruction tasks mentioned above. Major emphasis has been laid on exact reproducibility of models and results. YAML is used for configuration files and models can be stored in the pickle, PMML and ONNX formats, allowing application of the models in other programming languages than python.