The XXX International Conference on Neutrino Physics and Astrophysics (Neutrino 2022)

Antineutrino sensitivity at THEIA

Not scheduled

5m

Virtual Seoul

Poster Geo neutrinos Poster

Speakers

Dr Zara Bagdasarian (University of California, Berkeley; Lawrence Berkeley National Laboratory) Dr Stephane Zsoldos (University of California, Berkeley; Lawrence Berkeley National Laboratory)

Description

This poster will present the sensitivity towards the detection of low-energy antineutrinos of the Theia detector. For the purposes of this study, we consider one of the possible proposed designs, a 25-ktonne Theia-25 detector filled with a water-based liquid scintillator (WbLS) placed at Sanford Underground Research Facility (SURF). Currently, only two detectors in the world have measured geoneutrinos, antineutrinos originating from the radioactive decays of long-lived isotopes naturally present in the crust and mantle. Due to variations of the crust thickness, the geoneutrino flux measurements at different geographical locations can help separate a much less position-dependent mantle contribution. We demonstrate Theia’s sensitivity to measure the antineutrino fluxes via Inverse-Beta Decay (IBD) interactions with unprecedented precisions for geo- and reactor neutrinos, respectively, in only one year. We also demonstrate the sensitivity towards the Th/U ratio in geoneutrino flux.

Presentation materials

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