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

30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

## First limits on coherent elastic neutrino nucleus scattering and background decomposition in CONUS

Not scheduled
20m
Virtual Seoul

#### Virtual Seoul

Poster Neutrino interactions

### Speaker

janina Hakenmüller (Max-Planck-Institut für Kernphysik, Heidelberg, Germany)

### Description

The CONUS experiment aims at detecting coherent elastic neutrino nucleus scattering (CE$\nu$NS) at the commercial nuclear power plant in Brokdorf, Germany. A high antineutrino flux is guaranteed at a distance of 17.1m to the reactor core with a maximum thermal power of 3.9GW$_{th}$. The recoils induced by the neutrinos are detected with four low energy threshold point-contact high-purity Germanium spectrometers enclosed in a shell-like shield design. An electron recoil threshold of ≤300eV is achieved.
The poster illustrates the analysis of the data sets collected in 2018 and 2019 to derive the first upper limit on CE$\nu$NS from the CONUS experimental data. This includes a detailed presentation of the relevant background sources, especially reactor-correlated and time-dependent backgrounds. The CONUS shield is capable to reduce the overall background at the shallow depth location of the experiment by more than four orders of magnitude. An outlook on improvements and upgrades towards a CE$\nu$NS detection in future runs is shown.

Collaboration CONUS Collaboration

### Primary author

janina Hakenmüller (Max-Planck-Institut für Kernphysik, Heidelberg, Germany)