Speaker
Description
The Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay (LEGEND) is an experimental program searching for the neutrinoless $\beta \beta$ decay of $^{76}$Ge. The experiment is designed to reach half-life sensitivity of $10^{28}$ years. To achieve such rare event rate requires a number of measures to reduce background due to more common phenomena. A Water-Cherenkov-Veto system acts for LEGEND-200 to actively reduce background. It uses photomultiplier tubes as light sensors in a water-tank covered with a reflective foil to increase the light yield inside the water volume. In this poster we present the working principle and data analysis of the current muon veto and discuss plans for its future improvements for the next experimental phase LEGEND-1000.
This work is supported by the U.S. DOE and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak SRDA; the Swiss SNF; the UK STFC; the Russian RFBR; the Canadian NSERC and CFI; the LNGS, SNOLAB, and SURF facilities.
| Submitted on behalf of a Collaboration? | Yes |
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