August 28, 2023 to September 1, 2023
University of Vienna
Europe/Vienna timezone

Neutron Veto Instrumentation for LEGEND-1000

Aug 30, 2023, 3:30 PM
University of Vienna

University of Vienna

Universitätsring 1 A-1010 Vienna, Austria
Poster Neutrino physics and astrophysics Poster session


Michele Morella (Gran Sasso Science Institute)


LEGEND-1000 is a next-generation ton-scale experiment searching for neutrinoless double beta decay of $^{76}$Ge using p-type, high-purity germanium detectors. The experiment is planned for 1000 kg of Ge detectors enriched to more than 90$\%$ in $^{76}$Ge.

The experiment is going to be installed in an underground laboratory (SNOLAB at 6000 mwe or LNGS at 3800 mwe) to reduce direct and induced backgrounds from cosmic rays.
While standard analysis techniques are very effective in removing prompt backgrounds, muon-induced events, associated with the production of long-lived isotopes in Ge detectors, require the application of delayed coincidence cuts between muon veto, liquid argon veto, and the Ge detectors.

We present selected details of the new active veto for LEGEND-1000 at LNGS. The goal is to increase the instrumented liquid argon volume in order to enhance the delayed coincidence cut efficiency.
We will also discuss various readout options considered and related preliminary simulation results.

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

Primary author

Michele Morella (Gran Sasso Science Institute)


CJ Barton (RomaTre University and INFN RomaTre) Carla Cattadori (Milano Bicocca University and INFN Milano Bicocca) Carla Macolino (L'Aquila University and INFN LNGS) Christoph Wiesinger (Technische Universitat Munchen) Francesco Salamida (L'Aquila University and INFN RomaTre) Giuseppe Salamanna (RomaTre University and INFN RomaTre) Igor Abritta (RomaTre University and INFN RomaTre) Luigi Pertoldi (Technische Universitat München and INFN Padova) Moritz Neuberger (Technische Universitat München) Natalia Di Marco (Gran Sasso Science Institute) Riccardo Brugnera (Padova University and INFN Padova) Sincler Meireles (L'Aquila University and INFN LNGS) Sofia Calgaro (Padova University and INFN Padova) Stefan Schönert (Technische Universitat München) Valentina Biancacci (Gran Sasso Science Institute and INFN LNGS) Valerio D'Andrea (INFN RomaTre)

Presentation materials