Dzhelepov Laboratory of Nuclear Problems

Date and Time: Monday, 13 April 2020, at 3:00 PM

Venue: Online conference in Zoom

Seminar topic: “JUNO/Daya Bay project report and extension proposal for the JUNO project and Daya Bay activity”

Speaker: Maxim Gonchar

Abstract:

Report on the JUNO/Daya Bay Project, Proposal for the JUNO Project Prolongation and Further Daya Bay Support

The objective of this project is precision measurements of neutrino mixing parameters in the experiments with reactor electron antineutrinos, JUNO (mass ordering, $\Delta m_{32}^{}$²) and Daya Bay (θ13,Δm2₃₂). Both experiments are based in China.

The Daya Bay experiment (DAQ began in 2011) was the first experiment to observe non-zero value of the neutrino mixing angle ${\theta }_{13}$. The experiment will stop operation in 2020 and its measurement of ${\theta }_{13}$ will remain the most precise one for decades.

The JUNO experiment, intended to be launched in 2022, has complementary goals: determination of neutrino mass ordering and measurement of the neutrino oscillation parameters $\Delta m_{32}^{}$², $\Delta m_{21}^{}$², ${\theta }_{12}$ with a record precision better than 1% and therefore comparable to the quark sector. JUNO will also collect unprecedented statistics of geoneutrino events and achieve the best sensitivity to the neutrinos from Supernova explosion, diffuse Supernova background and proton decay. The near detector, TAO, will collect exceptional statistics of antineutrino interactions with energy resolution of better than 2% at 1 MeV and provide the most precise measurement of the reactor electron antineutrino spectrum.

The talk will cover the description of the experiments, main results and the work performed by the JINR group. The plans for 2021-2025 will also be discussed.