@article{d6ea1c2d26dd45558bbd2a20041b6d00,
title = "Measurement of the gamma ray background in the Davis cavern at the Sanford Underground Research Facility",
abstract = "Deep underground environments are ideal for low background searches due to the attenuation of cosmic rays by passage through the earth. However, they are affected by backgrounds from γ-rays emitted by 40K and the 238U and 232Th decay chains in the surrounding rock. The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a liquid xenon TPC located within the Davis campus at the Sanford Underground Research Facility, Lead, South Dakota, at the 4850-foot level. In order to characterise the cavern background, in-situ γ-ray measurements were taken with a sodium iodide detector in various locations and with lead shielding. The integral count rates (0–3300 keV) varied from 596 Hz to 1355 Hz for unshielded measurements, corresponding to a total flux from the cavern walls of 1.9 ± 0.4 γ cm−2s−1. The resulting activity in the walls of the cavern can be characterised as 220 ± 60 Bq/kg of 40K, 29 ± 15 Bq/kg of 238U, and 13 ± 3 Bq/kg of 232Th.",
author = "{(The LUX-ZEPLIN (LZ) Collaboration)} and Akerib, {D. S.} and Akerlof, {C. W.} and Alsum, {S. K.} and N. Angelides and Ara{\'u}jo, {H. M.} and Armstrong, {J. E.} and M. Arthurs and X. Bai and J. Balajthy and S. Balashov and A. Baxter and Bernard, {E. P.} and A. Biekert and Biesiadzinski, {T. P.} and Boast, {K. E.} and B. Boxer and P. Br{\'a}s and Buckley, {J. H.} and Bugaev, {V. V.} and S. Burdin and Busenitz, {J. K.} and C. Carels and Carlsmith, {D. L.} and Carmona-Benitez, {M. C.} and M. Cascella and C. Chan and A. Cole and A. Cottle and Cutter, {J. E.} and Dahl, {C. E.} and {de Viveiros}, L. and Dobson, {J. E.Y.} and E. Druszkiewicz and Edberg, {T. K.} and A. Fan and S. Fiorucci and H. Flaecher and T. Fruth and Gaitskell, {R. J.} and J. Genovesi and C. Ghag and Gilchriese, {M. G.D.} and S. Gokhale and {van der Grinten}, {M. G.D.} and Hall, {C. R.} and S. Hans and J. Harrison and Haselschwardt, {S. J.} and Hertel, {S. A.} and Hor, {J. Y.K.}",
note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",
year = "2020",
month = mar,
doi = "10.1016/j.astropartphys.2019.102391",
language = "English (US)",
volume = "116",
journal = "Astroparticle Physics",
issn = "0927-6505",
publisher = "Elsevier",
}