Browsing by Author "A Tomás"
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- Measurement of the Gamma Ray Background in the Davis Cavern at the Sanford Underground Research FacilityPublication . D. S. Akerib; C. W. Akerlof; S. K. Alsum; N. Angelides; H. M. Araújo; J. E. Armstrong; M. Arthurs; X. Bai; J. Balajthy; S. Balashov; A. Baxter; T. K. Edberg; A. Fan; S. Fiorucci; H. Flaecher; T. Fruth; R. J. Gaitskell; J. Genovesi; C. Ghag; M. G. D. Gilchriese; S. Gokhale; M. E. Monzani; M. G. D. van der Grinten; C. R. Hall; S. Hans; J. Harrison; S. J. Haselschwardt; S. A. Hertel; J. Y-K. Hor; M. Horn; D. Q. Huang; C. M. Ignarra; J. A. Morad; O. Jahangir; W. Ji; J. Johnson; A. C. Kaboth; K. Kamdin; D. Khaitan; A. Khazov; W. T. Kim; C. D. Kocher; L. Korley; E. Morrison; E. V. Korolkova; J. Kras; H. Kraus; S. W. Kravitz; L. Kreczko; B. Krikler; V. A. Kudryavtsev; E. A. Leason; J. Lee; D. S. Leonard; B. J. Mount; K. T. Lesko; C. Levy; J. Li; J. Liao; F. -T. Liao; J. Lin; A. Lindote; R. Linehan; W. H. Lippincott; R. Liu; A. St. J. Murphy; X. Liu; C. Loniewski; M. I. Lopes; B. López Paredes; W. Lorenzon; S. Luitz; J. M. Lyle; P. A. Majewski; A. Manalaysay; L. Manenti; D. Naim; R. L. Mannino; N. Marangou; M. F. Marzioni; D. N. McKinsey; J. McLaughlin; Y. Meng; E. H. Miller; A. Naylor; C. Nedlik; C. Nehrkorn; H. N. Nelson; E. P. Bernard; F. Neves; J. Nikoleyczik; A. Nilima; I. Olcina; K. C. Oliver-Mallory; S. Pal; K. J. Palladino; E. K. Pease; B. P. Penning; G. Pereira; A. Biekert; A. Piepke; K. Pushkin; J. Reichenbacher; C. A. Rhyne; Q. Riffard; G. R. C. Rischbieter; J. P. Rodrigues; R. Rosero; P. Rossiter; G. Rutherford; T. P. Biesiadzinski; A. B. M. R. Sazzad; R. W. Schnee; M. Schubnell; P. R. Scovell; D. Seymour; S. Shaw; T. A. Shutt; J. J. Silk; C. Silva; M. Solmaz; K. E. Boast; V. N. Solovov; P. Sorensen; I. Stancu; A. Stevens; T. M. Stiegler; K. Stifter; M. Szydagis; W. C. Taylor; R. Taylor; D. Temples; B. Boxer; P. A. Terman; D. R. Tiedt; M. Timalsina; A Tomás; M. Tripathi; L. Tvrznikova; U. Utku; S. Uvarov; A. Vacheret; J. J. Wang; P. Brás; J. R. Watson; R. C. Webb; R. G. White; T. J. Whitis; F. L. H. Wolfs; D. Woodward; J. Yin; J. H. Buckley; V. V. Bugaev; S. Burdin; J. K. Busenitz; C. Carels; D. L. Carlsmith; M. C. Carmona-Benitez; M. Cascella; C. Chan; A. Cole; A. Cottle; J. E. Cutter; C. E. Dahl; L. de Viveiros; J. E. Y. Dobson; E. DruszkiewiczDeep 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 $\gamma$-rays emitted by $^{40}$K and the $^{238}$U and $^{232}$Th 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 4,850-foot level. In order to characterise the cavern background, in-situ $\gamma$-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 in the cavern of $1.9\pm0.4$~$\gamma~$cm$^{-2}$s$^{-1}$. The resulting activity in the walls of the cavern can be characterised as $220\pm60$~Bq/kg of $^{40}$K, $29\pm15$~Bq/kg of $^{238}$U, and $13\pm3$~Bq/kg of $^{232}$Th.