TY - JOUR
T1 - The cosmic muon-induced background for the LEGEND-1000 alternative site at LNGS
AU - Neuberger, M.
AU - Pertoldi, L.
AU - Schönert, S.
AU - Wiesinger, C.
N1 - Publisher Copyright:
© 2022 Institute of Physics Publishing. All rights reserved.
PY - 2022/2/21
Y1 - 2022/2/21
N2 - The in-situ production of long-lived radio-isotopes by cosmic muon interactions may generate a non-negligible background for rare event searches in the deep subsurface. The delayed decay of 77(m)Ge has been identified as the dominant in-situ cosmogenic contributor for a neutrinoless double-beta decay search with 76Ge. The future ton-scale LEGEND-1000 experiment requires a total background of ≤ 10−5 cts/(keV·kg·yr). Dedicated Monte Carlo studies of the 77(m)Ge background at the alternative LNGS site were performed. The addition of passive neutron moderators, in combination with a delayed coincidence strategy, results in a background contribution of 8.6×10−7 cts/(keV·kg·yr) with an additional dead time of < 9%.
AB - The in-situ production of long-lived radio-isotopes by cosmic muon interactions may generate a non-negligible background for rare event searches in the deep subsurface. The delayed decay of 77(m)Ge has been identified as the dominant in-situ cosmogenic contributor for a neutrinoless double-beta decay search with 76Ge. The future ton-scale LEGEND-1000 experiment requires a total background of ≤ 10−5 cts/(keV·kg·yr). Dedicated Monte Carlo studies of the 77(m)Ge background at the alternative LNGS site were performed. The addition of passive neutron moderators, in combination with a delayed coincidence strategy, results in a background contribution of 8.6×10−7 cts/(keV·kg·yr) with an additional dead time of < 9%.
UR - http://www.scopus.com/inward/record.url?scp=85131857518&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2156/1/012216
DO - 10.1088/1742-6596/2156/1/012216
M3 - Conference article
AN - SCOPUS:85131857518
SN - 1742-6588
VL - 2156
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012216
T2 - 17th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2021
Y2 - 26 August 2021 through 3 September 2021
ER -