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The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

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Title
The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs
Author(s)
Akerib, D. S.; Akerlof, C. W.; Akimov, D. Yu.; Alquahtani, A.; Alsum, S. K.; Anderson, T. J.; Angelides, N.; Araujo, H. M.; Arbuckle, A.; Armstrong, J. E.; Arthurs, M.; Auyeung, H.; Aviles, S.; Bai, X.; Bailey, A. J.; Balajthy, J.; Balashov, S.; Bang, J.; Barry, M. J.; Bauer, D.; Bauer, P.; Baxter, A.; Belle, J.; Beltrame, P.; Bensinger, J.; Benson, T.; Bernard, E. P.; Bernstein, A.; Bhatti, A.; Biekert, A.; Biesiadzinski, T. P.; Birch, H. J.; Birrittella, B.; Boast, K. E.; Bolozdynya, A. I.; Boulton, E. M.; Boxer, B.; Bramante, R.; Branson, S.; Bras, P.; Breidenbach, M.; Brew, C. A. J.; Buckley, J. H.; Bugaev, V. V.; Bunker, R.; Burdin, S.; Busenitz, J. K.; Cabrita, R.; Campbell, J. S.; Carels, C.; Carlsmith, D. L.; Carlson, B.; Carmona-Benitez, M. C.; Cascella, M.; Chan, C.; Cherwinka, J. J.; Chiller, A. A.; Chiller, C.; Chott, N. I.; Cole, A.; Coleman, J.; Colling, D.; Conley, R. A.; Cottle, A.; Coughlen, R.; Cox, G.; Craddock, W. W.; Curran, D.; Currie, A.; Cutter, J. E.; Da Cunha, J. P.; Dahl, C. E.; Dardin, S.; Dasu, S.; Davis, J.; Davison, T. J. R.; de Viveiros, L.; Decheine, N.; Dobi, A.; Dobson, J. E. Y.; Druszkiewicz, E.; Dushkin, A.; Edberg, T. K.; Edwards, W. R.; Edwards, B. N.; Edwards, J.; Elnimr, M. M.; Emmet, W. T.; Eriksen, S. R.; Faham, C. H.; Fan, A.; Fayer, S.; Fiorucci, S.; Flaecher, H.; Florang, I. M. Fogarty; Ford, P.; Francis, V. B.; Fraser, E. D.; Froborg, F.; Fruth, T.; Gaitskell, R. J.; Gantos, N. J.; Garcia, D.; Gehman, V. M.; Gelfand, R.; Genovesi, J.; Gerhard, R. M.; Ghag, C.; Gibson, E.; Gilchriese, M. G. D.; Gokhale, S.; Gomber, B.; Gonda, T. G.; Greenall, A.; Greenwood, S.; Gregerson, G.; van der Grinten, M. G. D.; Gwilliam, C. B.; Hall, C. R.; Hamilton, D.; Hans, S.; Hanzel, K.; Harrington, T.; Harrison, A.; Harrison, J.; Hasselkus, C.; Haselschwardt, S. J.; Hemer, D.; Hertel, S. A.; Heise, J.; Hillbrand, S.; Hitchcock, O.; Hjemfelt, C.; Hoff, M. D.; Holbrook, B.; Holtom, E.; Hor, J. Y-K.; Horn, M.; Huang, D. Q.; Hurteau, T. W.; Ignarra, C. M.; Irving, M. N.; Jacobsen, R. G.; Jahangir, O.; Jeffery, S. N.; Ji, W.; Johnson, M.; Johnson, J.; Johnson, P.; Jones, W. G.; Kaboth, A. C.; Kamaha, A.; Kamdin, K.; Kasey, V.; Kazkaz, K.; Keefner, J.; Khaitan, D.; Khaleeq, M.; Khazov, A.; Khromov, A. V.; Khurana, I.; Yeongduk Kim; W. T. Kim; Kocher, C. D.; Kodroff, D.; Konovalov, A. M.; Korley, L.; Korolkova, E. V.; Koyuncu, M.; Kras, J.; Kraus, H.; Kravitz, S. W.; Krebs, H. J.; Kreczko, L.; Krikler, B.; Kudryavtsev, V. A.; Kumpan, A. V.; Kyre, S.; Lambert, A. R.; Landerud, B.; Larsen, N. A.; Laundrie, A.; Leason, E. A.; Hyun Su Lee; Jaison Lee; Lee, C.; Lenardo, B. G.; Leonard Douglas; Leonard, R.; Lesko, K. T.; Levy, C.; Jin Li; Liu, Y.; Liao, J.; Liao, F. -T.; Lin, J.; Lindote, A.; Linehan, R.; Lippincott, W. H.; Liu, R.; Liu, X.; Loniewski, C.; Lopes, M. I.; Lopez-Asamar, E.; Paredes, B. Lopez; Lorenzon, W.; Lucero, D.; Luitz, S.; Lyle, J. M.; Lynch, C.; Majewski, P. A.; Makkinje, J.; Malling, D. C.; Manalaysay, A.; Manenti, L.; Mannino, R. L.; Marangou, N.; Markley, D. J.; MarrLaundrie, P.; Martin, T. J.; Marzioni, M. F.; Maupin, C.; McConnell, C. T.; McKinsey, D. N.; McLaughlin, J.; Mei, D. -M.; Meng, Y.; Miller, E. H.; Minaker, Z. J.; Mizrachi, E.; Mock, J.; Molash, D.; Monte, A.; Monzani, M. E.; Morad, J. A.; Morrison, E.; Mount, B. J.; Murphy, A. St. J.; Naim, D.; Naylor, A.; Nedlik, C.; Nehrkorn, C.; Nelson, H. N.; Nesbit, J.; Neves, F.; Nikkel, J. A.; Nikoleyczik, J. A.; Nilima, A.; O'Dell, J.; Oh, H.; O'Neill, F. G.; O'Sullivan, K.; Olcina, I.; Olevitch, M. A.; Oliver-Mallory, K. C.; Oxborough, L.; Pagac, A.; Pagenkopf, D.; Pal, S.; Palladino, K. J.; Palmaccio, V. M.; Palmer, J.; Pangilinan, M.; Parveen, N.; Patton, S. J.; Pease, E. K.; Penning, B. P.; Pereira, G.; Pereira, C.; Peterson, I. B.; Piepke, A.; Pierson, S.; Powell, S.; Preece, R. M.; Pushkin, K.; Qie, Y.; Racine, M.; Ratcliff, B. N.; Reichenbacher, J.; Reichhart, L.; Rhyne, C. A.; Richards, A.; Riffard, Q.; Rischbieter, G. R. C.; Rodrigues, J. P.; Rose, H. J.; Rosero, R.; Rossiter, P.; Rucinski, R.; Rutherford, G.; Saba, J. S.; Sabarots, L.; Santone, D.; Sarychev, M.; Sazzad, A. B. M. R.; Schnee, R. W.; Schubnell, M.; Scovell, P. R.; Severson, M.; Seymour, D.; Shaw, S.; Shutt, G. W.; Shutt, T. A.; Silk, J. J.; Silva, C.; Skarpaas, K.; Skulski, W.; Smith, A. R.; Smith, R. J.; Smith, R. E.; So, J.; Solmaz, M.; Solovov, V. N.; Sorensen, P.; Sosnovtsev, V. V.; Stancu, I.; Stark, M. R.; Stephenson, S.; Stern, N.; Stevens, A.; Stiegler, T. M.; Stifter, K.; Studley, R.; Sumner, T. J.; Sundarnath, K.; Sutcliffe, P.; Swanson, N.; Szydagis, M.; Tan, M.; Taylor, W. C.; Taylor, R.; Taylor, D. J.; Temples, D.; Tennyson, B. P.; Terman, P. A.; Thomas, K. J.; Thomson, J. A.; Tiedt, D. R.; Timalsina, M.; To, W. H.; Tomas, A.; Tope, T. E.; Tripathi, M.; Tronstad, D. R.; Tull, C. E.; Turner, W.; Tvrznikova, L.; Utes, M.; Utku, U.; Uvarov, S.; Va'vra, J.; Vacheret, A.; Vaitkus, A.; Verbus, J. R.; Vietanen, T.; Voirin, E.; Vuosalo, C. O.; Walcott, S.; Waldron, W. L.; Walker, K.; Wang, J. J.; Wang, R.; Wang, L.; Wang, W.; Wang, Y.; Watson, J. R.; Migneault, J.; Weatherly, S.; Webb, R. C.; Wei, W. -Z.; While, M.; White, R. G.; White, J. T.; White, D. T.; Whitis, T. J.; Wisniewski, W. J.; Wilson, K.; Witherell, M. S.; Wolfs, F. L. H.; Wolfs, J. D.; Woodward, D.; Worm, S. D.; Xiang, X.; Xiao, Q.; Xu, J.; Yeh, M.; Yin, J.; Young, I.; Zhang, C.; Zarzhitsky, P.
Publication Date
2020-11
Journal
EUROPEAN PHYSICAL JOURNAL C, v.80, no.11
Publisher
SPRINGER
Abstract
LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMPnucleon scattering sensitivity above 1.4 x 10(-48) cm(2) for a WIMP mass of 40 GeV/c(2) and a 1000 days exposure. LZ achieves this sensitivity through a combination of a large 5.6 t fiducial volume, active inner and outer veto systems, and radio-pure construction using materials with inherently low radioactivity content. The LZ collaboration performed an extensive radioassay campaign over a period of six years to inform material selection for construction and provide an input to the experimental background model against which any possible signal excess may be evaluated. The campaign and its results are described in this paper. We present assays of dust and radon daughters depositing on the surface of components as well as cleanliness controls necessary to maintain background expectations through detector construction and assembly. Finally, examples from the campaign to highlight fixed contaminant radioassays for the LZ photomultiplier tubes, quality control and quality assurance procedures through fabrication, radon emanationmeasurements ofmajor sub-systems, and bespoke detector systems to assay scintillator are presented.
URI
https://pr.ibs.re.kr/handle/8788114/12976
DOI
10.1140/epjc/s10052-020-8420-x
ISSN
1434-6044
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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