Directional Reconstruction of the Directional Beta Source Data for the Eos Experiment

Eos is a twenty-ton detector designed to explore hybrid neutrino detection using water-based liquid scintillator (WbLS) and other novel scintillators. Hybrid detection merges the benefits of Cherenkov light, which provides directional information, with the high light yield of scintillation light, improving detection threshold and position reconstruction. Eos not only aims to demonstrate the viability of hybrid detection but also serves as a testing ground for new technologies. A key goal is to show the detector's ability to reconstruct particle directions using Cherenkov light. To achieve this, a directional beta source has been deployed. The source has self-triggering capabilities and consists of a capsule containing either 90Sr or 106Ru sources, designed to emit a collimated beam of electrons. It is built to produce several Hz of tagged events. In this talk, I will present the direction reconstruction performance of the directional beta source data in Eos.