Speaker
Description
$\qquad$ The $\nu$GeN experiment is designed to study rare processes, including coherent neutrino-nucleus scattering and searches for a neutrino magnetic moment and other unusual phenomena. It is located at the Kalinin Nuclear Power Plant (KNPP) in Udomlya, Russia, with the detector positioned $11.1 - 12.2$ m from the reactor core beneath Unit 3. This unique location provides an antineutrino flux of $(3.6 - 4.4) \times 10^{13} \, \nu / (\text{cm}^{2}\cdot \text{s})$ and shielding equivalent to $\sim 50$ m water, resulting in favorable background conditions.
$\qquad$Accurate assessment of the ambient gamma background is required to ensure stable operation and reliable data interpretation. For this purpose, a 3$-$kg NaI(Tl) scintillation detector with an independent data acquisition system (Caen DT5790) is employed. Preliminary results include estimates of the activity of $^{40}\mathrm{K}$, $^{208}\mathrm{Tl}$, and other isotopes, as well as contributions from several $(n,\gamma)$ reactions.
