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1. Erratum to: The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

Author

D. S. Akerib, C. W. Akerlof, D. Yu. Akimov, A. Alquahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, A. Arbuckle, J. E. Armstrong, M. Arthurs, H. Auyeung, S. Aviles, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, J. Bang, M. J. Barry, D. Bauer, P. Bauer, A. Baxter, J. Belle, P. Beltrame, J. Bensinger, T. Benson, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, B. Birrittella, K. E. Boast, A. I. Bolozdynya, E. M. Boulton, B. Boxer, R. Bramante, S. Branson, P. Brás, M. Breidenbach, C. A. J. Brew, J. H. Buckley, V. V. Bugaev, R. Bunker, S. Burdin, J. K. Busenitz, R. Cabrita, J. S. Campbell, C. Carels, D. L. Carlsmith, B. Carlson, M. C. Carmona-Benitez, M. Cascella, C. Chan, J. J. Cherwinka, A. A. Chiller, C. Chiller, N. I. Chott, A. Cole, J. Coleman, D. Colling, R. A. Conley, A. Cottle, R. Coughlen, G. Cox, W. W. Craddock, D. Curran, A. Currie, J. E. Cutter, J. P. da Cunha, C. E. Dahl, S. Dardin, S. Dasu, J. Davis, T. J. R. Davison, L. de Viveiros, N. Decheine, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz, A. Dushkin, T. K. Edberg, W. R. Edwards, B. N. Edwards, J. Edwards, M. M. Elnimr, W. T. Emmet, S. R. Eriksen, C. H. Faham, A. Fan, S. Fayer, S. Fiorucci, H. Flaecher, I. M. Fogarty Florang, P. Ford, V. B. Francis, E. D. Fraser, F. Froborg, T. Fruth, R. J. Gaitskell, N. J. Gantos, D. Garcia, V. M. Gehman, R. Gelfand, J. Genovesi, R. M. Gerhard, C. Ghag, E. Gibson, M. G. D. Gilchriese, S. Gokhale, B. Gomber, T. G. Gonda, A. Greenall, S. Greenwood, G. Gregerson, M. G. D. van der Grinten, C. B. Gwilliam, C. R. Hall, D. Hamilton, S. Hans, K. Hanzel, T. Harrington, A. Harrison, J. Harrison, C. Hasselkus, S. J. Haselschwardt, D. Hemer, S. A. Hertel, J. Heise, S. Hillbrand, O. Hitchcock, C. Hjemfelt, M. D. Hoff, B. Holbrook, E. Holtom, J. Y-K. Hor, M. Horn, D. Q. Huang, T. W. Hurteau, C. M. Ignarra, M. N. Irving, R. G. Jacobsen, O. Jahangir, S. N. Jeffery, W. Ji, M. Johnson, J. Johnson, P. Johnson, W. G. Jones, A. C. Kaboth, A. Kamaha, K. Kamdin, V. Kasey, K. Kazkaz, J. Keefner, D. Khaitan, M. Khaleeq, A. Khazov, A. V. Khromov, I. Khurana, Y. D. Kim, W. T. Kim, C. D. Kocher, D. Kodroff, A. M. Konovalov, L. Korley, E. V. Korolkova, M. Koyuncu, J. Kras, H. Kraus, S. W. Kravitz, H. J. Krebs, L. Kreczko, B. Krikler, V. A. Kudryavtsev, A. V. Kumpan, S. Kyre, A. R. Lambert, B. Landerud, N. A. Larsen, A. Laundrie, E. A. Leason, H. S. Lee, J. Lee, C. Lee, B. G. Lenardo, D. S. Leonard, R. Leonard, K. T. Lesko, C. Levy, J. Li, Y. Liu, J. Liao, F.-T. Liao, J. Lin, A. Lindote, R. Linehan, W. H. Lippincott, R. Liu, X. Liu, C. Loniewski, M. I. Lopes, E. Lopez-Asamar, B. López Paredes, W. Lorenzon, D. Lucero, S. Luitz, J. M. Lyle, C. Lynch, P. A. Majewski, J. Makkinje, D. C. Malling, A. Manalaysay, L. Manenti, R. L. Mannino, N. Marangou, D. J. Markley, P. MarrLaundrie, T. J. Martin, M. F. Marzioni, C. Maupin, C. T. McConnell, D. N. McKinsey, J. McLaughlin, D.-M. Mei, Y. Meng, E. H. Miller, Z. J. Minaker, E. Mizrachi, J. Mock, D. Molash, A. Monte, M. E. Monzani, J. A. Morad, E. Morrison, B. J. Mount, A. St. J. Murphy, D. Naim, A. Naylor, C. Nedlik, C. Nehrkorn, H. N. Nelson, J. Nesbit, F. Neves, J. A. Nikkel, J. A. Nikoleyczik, A. Nilima, J. O’Dell, H. Oh, F. G. O’Neill, K. O’Sullivan, I. Olcina, M. A. Olevitch, K. C. Oliver-Mallory, L. Oxborough, A. Pagac, D. Pagenkopf, S. Pal, K. J. Palladino, V. M. Palmaccio, J. Palmer, M. Pangilinan, N. Parveen, S. J. Patton, E. K. Pease, B. P. Penning, G. Pereira, C. Pereira, I. B. Peterson, A. Piepke, S. Pierson, S. Powell, R. M. Preece, K. Pushkin, Y. Qie, M. Racine, B. N. Ratcliff, J. Reichenbacher, L. Reichhart, C. A. Rhyne, A. Richards, Q. Riffard, G. R. C. Rischbieter, J. P. Rodrigues, H. J. Rose, R. Rosero, P. Rossiter, R. Rucinski, G. Rutherford, J. S. Saba, L. Sabarots, D. Santone, M. Sarychev, A. B. M. R. Sazzad, R. W. Schnee, M. Schubnell, P. R. Scovell, M. Severson, D. Seymour, S. Shaw, G. W. Shutt, T. A. Shutt, J. J. Silk, C. Silva, K. Skarpaas, W. Skulski, A. R. Smith, R. J. Smith, R. E. Smith, J. So, M. Solmaz, V. N. Solovov, P. Sorensen, V. V. Sosnovtsev, I. Stancu, M. R. Stark, S. Stephenson, N. Stern, A. Stevens, T. M. Stiegler, K. Stifter, R. Studley, T. J. Sumner, K. Sundarnath, P. Sutcliffe, N. Swanson, M. Szydagis, M. Tan, W. C. Taylor, R. Taylor, D. J. Taylor, D. Temples, B. P. Tennyson, P. A. Terman, K. J. Thomas, J. A. Thomson, D. R. Tiedt, M. Timalsina, W. H. To, A. Tomás, T. E. Tope, M. Tripathi, D. R. Tronstad, C. E. Tull, W. Turner, L. Tvrznikova, M. Utes, U. Utku, S. Uvarov, J. Va’vra, A. Vacheret, A. Vaitkus, J. R. Verbus, T. Vietanen, E. Voirin, C. O. Vuosalo, S. Walcott, W. L. Waldron, K. Walker, J. J. Wang, R. Wang, L. Wang, W. Wang, Y. Wang, J. R. Watson, J. Migneault, S. Weatherly, R. C. Webb, W.-Z. Wei, M. While, R. G. White, J. T. White, D. T. White, T. J. Whitis, W. J. Wisniewski, K. Wilson, M. S. Witherell, F. L. H. Wolfs, J. D. Wolfs, D. Woodward, S. D. Worm, X. Xiang, Q. Xiao, J. Xu, M. Yeh, J. Yin, I. Young, C. Zhang, and P. Zarzhitsky

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Published
2022
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2. The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

Author

D. S. Akerib, C. W. Akerlof, D. Yu. Akimov, A. Alquahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, A. Arbuckle, J. E. Armstrong, M. Arthurs, H. Auyeung, S. Aviles, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, J. Bang, M. J. Barry, D. Bauer, P. Bauer, A. Baxter, J. Belle, P. Beltrame, J. Bensinger, T. Benson, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, B. Birrittella, K. E. Boast, A. I. Bolozdynya, E. M. Boulton, B. Boxer, R. Bramante, S. Branson, P. Brás, M. Breidenbach, C. A. J. Brew, J. H. Buckley, V. V. Bugaev, R. Bunker, S. Burdin, J. K. Busenitz, R. Cabrita, J. S. Campbell, C. Carels, D. L. Carlsmith, B. Carlson, M. C. Carmona-Benitez, M. Cascella, C. Chan, J. J. Cherwinka, A. A. Chiller, C. Chiller, N. I. Chott, A. Cole, J. Coleman, D. Colling, R. A. Conley, A. Cottle, R. Coughlen, G. Cox, W. W. Craddock, D. Curran, A. Currie, J. E. Cutter, J. P. da Cunha, C. E. Dahl, S. Dardin, S. Dasu, J. Davis, T. J. R. Davison, L. de Viveiros, N. Decheine, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz, A. Dushkin, T. K. Edberg, W. R. Edwards, B. N. Edwards, J. Edwards, M. M. Elnimr, W. T. Emmet, S. R. Eriksen, C. H. Faham, A. Fan, S. Fayer, S. Fiorucci, H. Flaecher, I. M. Fogarty Florang, P. Ford, V. B. Francis, E. D. Fraser, F. Froborg, T. Fruth, R. J. Gaitskell, N. J. Gantos, D. Garcia, V. M. Gehman, R. Gelfand, J. Genovesi, R. M. Gerhard, C. Ghag, E. Gibson, M. G. D. Gilchriese, S. Gokhale, B. Gomber, T. G. Gonda, A. Greenall, S. Greenwood, G. Gregerson, M. G. D. van der Grinten, C. B. Gwilliam, C. R. Hall, D. Hamilton, S. Hans, K. Hanzel, T. Harrington, A. Harrison, J. Harrison, C. Hasselkus, S. J. Haselschwardt, D. Hemer, S. A. Hertel, J. Heise, S. Hillbrand, O. Hitchcock, C. Hjemfelt, M. D. Hoff, B. Holbrook, E. Holtom, J. Y-K. Hor, M. Horn, D. Q. Huang, T. W. Hurteau, C. M. Ignarra, M. N. Irving, R. G. Jacobsen, O. Jahangir, S. N. Jeffery, W. Ji, M. Johnson, J. Johnson, P. Johnson, W. G. Jones, A. C. Kaboth, A. Kamaha, K. Kamdin, V. Kasey, K. Kazkaz, J. Keefner, D. Khaitan, M. Khaleeq, A. Khazov, A. V. Khromov, I. Khurana, Y. D. Kim, W. T. Kim, C. D. Kocher, D. Kodroff, A. M. Konovalov, L. Korley, E. V. Korolkova, M. Koyuncu, J. Kras, H. Kraus, S. W. Kravitz, H. J. Krebs, L. Kreczko, B. Krikler, V. A. Kudryavtsev, A. V. Kumpan, S. Kyre, A. R. Lambert, B. Landerud, N. A. Larsen, A. Laundrie, E. A. Leason, H. S. Lee, J. Lee, C. Lee, B. G. Lenardo, D. S. Leonard, R. Leonard, K. T. Lesko, C. Levy, J. Li, Y. Liu, J. Liao, F.-T. Liao, J. Lin, A. Lindote, R. Linehan, W. H. Lippincott, R. Liu, X. Liu, C. Loniewski, M. I. Lopes, E. Lopez-Asamar, B. López Paredes, W. Lorenzon, D. Lucero, S. Luitz, J. M. Lyle, C. Lynch, P. A. Majewski, J. Makkinje, D. C. Malling, A. Manalaysay, L. Manenti, R. L. Mannino, N. Marangou, D. J. Markley, P. MarrLaundrie, T. J. Martin, M. F. Marzioni, C. Maupin, C. T. McConnell, D. N. McKinsey, J. McLaughlin, D.-M. Mei, Y. Meng, E. H. Miller, Z. J. Minaker, E. Mizrachi, J. Mock, D. Molash, A. Monte, M. E. Monzani, J. A. Morad, E. Morrison, B. J. Mount, A. St. J. Murphy, D. Naim, A. Naylor, C. Nedlik, C. Nehrkorn, H. N. Nelson, J. Nesbit, F. Neves, J. A. Nikkel, J. A. Nikoleyczik, A. Nilima, J. O’Dell, H. Oh, F. G. O’Neill, K. O’Sullivan, I. Olcina, M. A. Olevitch, K. C. Oliver-Mallory, L. Oxborough, A. Pagac, D. Pagenkopf, S. Pal, K. J. Palladino, V. M. Palmaccio, J. Palmer, M. Pangilinan, N. Parveen, S. J. Patton, E. K. Pease, B. P. Penning, G. Pereira, C. Pereira, I. B. Peterson, A. Piepke, S. Pierson, S. Powell, R. M. Preece, K. Pushkin, Y. Qie, M. Racine, B. N. Ratcliff, J. Reichenbacher, L. Reichhart, C. A. Rhyne, A. Richards, Q. Riffard, G. R. C. Rischbieter, J. P. Rodrigues, H. J. Rose, R. Rosero, P. Rossiter, R. Rucinski, G. Rutherford, J. S. Saba, L. Sabarots, D. Santone, M. Sarychev, A. B. M. R. Sazzad, R. W. Schnee, M. Schubnell, P. R. Scovell, M. Severson, D. Seymour, S. Shaw, G. W. Shutt, T. A. Shutt, J. J. Silk, C. Silva, K. Skarpaas, W. Skulski, A. R. Smith, R. J. Smith, R. E. Smith, J. So, M. Solmaz, V. N. Solovov, P. Sorensen, V. V. Sosnovtsev, I. Stancu, M. R. Stark, S. Stephenson, N. Stern, A. Stevens, T. M. Stiegler, K. Stifter, R. Studley, T. J. Sumner, K. Sundarnath, P. Sutcliffe, N. Swanson, M. Szydagis, M. Tan, W. C. Taylor, R. Taylor, D. J. Taylor, D. Temples, B. P. Tennyson, P. A. Terman, K. J. Thomas, J. A. Thomson, D. R. Tiedt, M. Timalsina, W. H. To, A. Tomás, T. E. Tope, M. Tripathi, D. R. Tronstad, C. E. Tull, W. Turner, L. Tvrznikova, M. Utes, U. Utku, S. Uvarov, J. Va’vra, A. Vacheret, A. Vaitkus, J. R. Verbus, T. Vietanen, E. Voirin, C. O. Vuosalo, S. Walcott, W. L. Waldron, K. Walker, J. J. Wang, R. Wang, L. Wang, W. Wang, Y. Wang, J. R. Watson, J. Migneault, S. Weatherly, R. C. Webb, W.-Z. Wei, M. While, R. G. White, J. T. White, D. T. White, T. J. Whitis, W. J. Wisniewski, K. Wilson, M. S. Witherell, F. L. H. Wolfs, J. D. Wolfs, D. Woodward, S. D. Worm, X. Xiang, Q. Xiao, J. Xu, M. Yeh, J. Yin, I. Young, C. Zhang, and P. Zarzhitsky

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above $${1.4 \times 10^{-48}}\, {\hbox {cm}}^{2}$$ 1.4 × 10 - 48 cm 2 for a WIMP mass of $${40}\, \hbox {GeV}/{\hbox {c}}^{2}$$ 40 GeV / c 2 and a $${1000}\, \hbox {days}$$ 1000 days exposure. LZ achieves this sensitivity through a combination of a large $${5.6}\, \hbox {t}$$ 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 emanation measurements of major sub-systems, and bespoke detector systems to assay scintillator are presented.

Published
2020
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3. The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

Author

Mikkel B. Johnson, B. Landerud, A. Biekert, B. N. Edwards, K. Hanzel, T. E. Tope, D. Curran, C. Chiller, J. Palmer, R. Leonard, P. Sutcliffe, E. D. Fraser, R. Bunker, J. So, A. A. Chiller, M. R. While, A. Dobi, D. Hamilton, M. G. D. van der Grinten, W. J. Wisniewski, J. Li, A. Fan, J.S. Saba, C. Lynch, Henrique Araujo, S. Luitz, J. Nesbit, M. Horn, C. D. Kocher, Catarina Silva, F. G. O’Neill, J. C. Davis, J. J. Silk, M. C. Carmona-Benitez, Simon Fayer, M. Pangilinan, K. O’Sullivan, D. Lucero, Q. Xiao, D. Hemer, B. Boxer, J. M. Lyle, C. Chan, C. E. Tull, J. Genovesi, A. Vaitkus, M. Arthurs, V. B. Francis, S. Kravitz, X. Liu, H. J. Birch, R. Linehan, S. Walcott, C. H. Faham, T. J. Anderson, A. B.M.R. Sazzad, D. White, A. Kamaha, M. S. Witherell, R. Studley, K. Sundarnath, R. Liu, H. Oh, L. Korley, H. Flaecher, R. Conley, K. Kamdin, P. Beltrame, S. Stephenson, C. Pereira, C. R. Hall, R. Cabrita, B. Holbrook, B. G. Lenardo, P. Majewski, T.M. Stiegler, I. B. Peterson, A. Manalaysay, A. Monte, C. Ghag, H. Kraus, C. Loniewski, J. Makkinje, X. Xiang, Robert A. Taylor, M. N. Irving, S. Uvarov, Michael Schubnell, J. Heise, R. Coughlen, A. Lambert, F. Froborg, L. Oxborough, D.C. Malling, S. Greenwood, J. Yin, S. J. Haselschwardt, H. J. Krebs, W. H. Lippincott, K. J. Palladino, R. E. Smith, V. A. Kudryavtsev, I. Olcina, C. M. Ignarra, A. Harrison, A. J. Bailey, Minfang Yeh, D. Bauer, W. Skulski, J. Keefner, O. Hitchcock, Ben Carlson, E. Leason, Benjamin Krikler, A. Cottle, E. Mizrachi, Michele Cascella, M. Khaleeq, M. Solmaz, T. J. Whitis, J. J. Wang, N. Angelides, S. Gokhale, K. Skarpaas, Daniel McKinsey, S. Dardin, S. Kyre, D. Santone, P. R. Scovell, T. Vietanen, S. Powell, Y. Wang, David Leonard, E. Morrison, N. Swanson, M. Sarychev, M. A. Olevitch, E. K. Pease, M. Elnimr, P. Brás, N.J. Gantos, R. G. Jacobsen, J. Migneault, Yeongduk Kim, W. Turner, S. D. Worm, Seth Hillbrand, T. Fruth, G. Gregerson, Wenzhao Wei, V. Kasey, L. Kreczko, J. R. Watson, A. Bhatti, D. Naim, Ethan Bernard, B. J. Mount, V. N. Solovov, C. Nedlik, K. Wilson, Elena Korolkova, G. R. C. Rischbieter, P. Ford, A. Stevens, D. J. Taylor, H. N. Nelson, F. Neves, S. Aviles, W. T. Emmet, K. Stifter, B. Birrittella, J. T. White, S. J. Patton, D. Molash, M. Severson, T. A. Shutt, A. Richards, D Kodroff, J. Lin, Kareem Kazkaz, T. P. Biesiadzinski, David Colling, J. Liao, J. Mock, J. A. Morad, E. Holtom, J. E. Y. Dobson, Bjoern Penning, C. E. Dahl, A. Dushkin, A. Konovalov, D. J. Markley, G. W. Shutt, N. Parveen, M. G. D. Gilchriese, Yanwen Liu, C. Carels, Martin Breidenbach, Kathrin C. Walker, V.V. Sosnovtsev, A. Naylor, K. T. Lesko, N. A. Larsen, C. Lee, A. Pagac, J. J. Cherwinka, N. Decheine, J. Bang, J. A. Nikoleyczik, Patrick Bauer, J.P. Rodrigues, S. Branson, T. J. R. Davison, B. Lopez Paredes, D. Pagenkopf, J. S. Campbell, M. Tan, K. C. Oliver-Mallory, M.J. Barry, J. Belle, D. Yu. Akimov, M. Timalsina, S. Shaw, Alexander Bolozdynya, W. Ji, Sridhara Dasu, D. Q. Huang, J. Edwards, F. L. H. Wolfs, K. E. Boast, J. Busenitz, Ren-Jie Wang, S. Fiorucci, N. Stern, C. Rhyne, V. Bugaev, A. Laundrie, G. Rutherford, G. Pereira, E. H. Miller, W. W. Craddock, S. Alsum, J.P. da Cunha, Richard J. Smith, A. Cole, W. Wang, Julie Harrison, I. Khurana, M. Utes, R. J. Gaitskell, J. Kras, D. Khaitan, R. L. Mannino, J. D. Wolfs, H. Auyeung, L. de Viveiros, E. Voirin, E. M. Boulton, N. I. Chott, I. Stancu, L. Tvrznikova, Richard Rosero, P. MarrLaundrie, D. R. Tronstad, T. Benson, Dongming Mei, T. J. Sumner, O. Jahangir, J. Va’vra, Ross G. White, L. Sabarots, A. Currie, A. R. Smith, W. L. Waldron, J. P. Coleman, E. Lopez-Asamar, Wolfgang Lorenzon, A. Piepke, Carl Gwilliam, S. Hans, T. Harrington, Laura Manenti, A. Greenall, F.-T. Liao, G. Cox, J. R. Bensinger, V. M. Gehman, H. J. Rose, Christopher Brew, X. Bai, P. Sorensen, A. Arbuckle, Y. Qie, R. C. Webb, R.M. Gerhard, T.W. Hurteau, K.J. Thomas, P. Rossiter, C. Hasselkus, W. G. Jones, J. Johnson, R. Gelfand, T. G. Gonda, C. O. Vuosalo, A. St. J. Murphy, Adam Bernstein, Chao Zhang, A. Nilima, R. M. Preece, T. K. Edberg, Q. Riffard, B. P. Tennyson, Yue Meng, C. Maupin, J. E. Cutter, J. Reichenbacher, J.Y-K. Hor, N. Marangou, D. Temples, Eli Gibson, M. Hoff, H. S. Lee, J. H. Buckley, Z. J. Minaker, M.I. Lopes, M. Koyuncu, P. A. Terman, J.R. Verbus, Bhawna Gomber, J. A. Nikkel, A. Alquahtani, I. M. Fogarty Florang, D. Seymour, A. V. Kumpan, Antonin Vacheret, C. Hjemfelt, M.R. Stark, S. Pierson, M. Racine, D. R. Tiedt, D. S. Akerib, A. Khazov, W. C. Taylor, J. Balajthy, A.V. Khromov, A. C. Kaboth, V. M. Palmaccio, Duncan Carlsmith, K. Pushkin, S. A. Hertel, S. N. Jeffery, E. Druszkiewicz, R. W. Schnee, S. Pal, R. Bramante, B. N. Ratcliff, M. E. Monzani, J. O'Dell, P. Zarzhitsky, L. Wang, P. Johnson, Matthew Szydagis, W. H. To, J. E. Armstrong, U. Utku, Mani Tripathi, D. Woodward, D. Garcia, W. R. Edwards, Carl W. Akerlof, Jilei Xu, C. Nehrkorn, Ian S. Young, J. McLaughlin, J. Thomson, S. R. Eriksen, R. Rucinski, T.J. Martin, C. Levy, Sergey Burdin, A. Baxter, A. Lindote, L. Reichhart, Juhyeong Lee, S. Balashov, C. T. McConnell, M. F. Marzioni, A. Tomás, W. T. Kim, S. Weatherly, and Science and Technology Facilities Council (STFC)

Subjects
BACKGROUNDS, Particle physics, Photomultiplier, Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), FOS: Physical sciences, lcsh:Astrophysics, Scintillator, 01 natural sciences, High Energy Physics - Experiment, Physics, Particles & Fields, High Energy Physics - Experiment (hep-ex), WIMP, lcsh:QB460-466, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Gamma spectroscopy, Sensitivity (control systems), 010306 general physics, DETECTOR, physics.ins-det, 0206 Quantum Physics, Engineering (miscellaneous), Physics, Science & Technology, hep-ex, 010308 nuclear & particles physics, Scattering, IMPURITIES, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Physical Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Content (measure theory), lcsh:QC770-798, CONSTRUCTION MATERIALS
Abstract

LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above $1.4 \times 10^{-48}$ cm$^{2}$ for a WIMP mass of 40 GeV/c$^{2}$ and a 1000 d 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 emanation measurements of major sub-systems, and bespoke detector systems to assay scintillator are presented., Comment: 45 pages (79 inc. tables), 7 figures, 9 tables

Published
2020

4. Projected sensitivity of the LUX-ZEPLIN experiment to the 0νββ decay of Xe136

Author

Richard Rosero, D. R. Tronstad, David Leonard, X. Bai, J. Johnson, X. Liu, J. Busenitz, P. Brás, C. Rhyne, A. Cole, R. J. Gaitskell, R. Linehan, Eli Gibson, C. Levy, Sergey Burdin, R. C. Webb, A. Baxter, L. de Viveiros, A. Alqahtani, A. Monte, C. Ghag, N. Angelides, P. Sorensen, S. Gokhale, S. Shaw, Catarina Silva, J. Palmer, B. Lopez Paredes, T. J. Sumner, N. Marangou, A. Manalaysay, K. E. Boast, O. Jahangir, R. W. Schnee, S. Pal, M. E. Monzani, Yue Meng, D. Naim, I. Stancu, J. Liao, J. J. Wang, K. O’Sullivan, V. Bugaev, N. I. Chott, A. Khazov, P. Zarzhitsky, B. J. Mount, T. A. Shutt, Matthew Szydagis, J. Lin, H. N. Nelson, K. C. Oliver-Mallory, Wolfgang Lorenzon, Ross G. White, J.J. Silk, J. R. Bensinger, E. Leason, Benjamin Krikler, M. G. D. Gilchriese, E. Druszkiewicz, Laura Manenti, J. E. Y. Dobson, C. Carels, E. Mizrachi, C. Chan, Henrique Araujo, J. A. Morad, L. Kreczko, J. R. Watson, F.-T. Liao, A. Vaitkus, S. Kravitz, W. C. Taylor, P. Rossiter, H. J. Birch, D. Khaitan, K. Stifter, A. Kamaha, J. Bang, J. A. Nikoleyczik, D. Seymour, W. Turner, U. Utku, E. D. Fraser, Mani Tripathi, K. T. Lesko, C. Nedlik, A. Biekert, J. Balajthy, V. A. Kudryavtsev, S. Fiorucci, A. C. Kaboth, J. McLaughlin, C. M. Ignarra, C. R. Hall, F. L. H. Wolfs, R. Cabrita, Kareem Kazkaz, G. Rutherford, D. R. Tiedt, A. Harrison, M. Horn, J. Li, T. P. Biesiadzinski, C. D. Kocher, M. G. D. van der Grinten, K. J. Palladino, M. F. Marzioni, M. C. Carmona-Benitez, J. Kras, Michele Cascella, Carl W. Akerlof, H. Kraus, C. E. Dahl, T. Fruth, T. J. Anderson, A. Lindote, J. M. Lyle, Jilei Xu, B. Boxer, C. Nehrkorn, A. B.M.R. Sazzad, A. Tomás, E. K. Pease, Juhyeong Lee, Michael Schubnell, D. S. Akerib, L. Korley, K. Kamdin, S. Balashov, Ethan Bernard, P. Majewski, W. H. Lippincott, V. N. Solovov, X. Xiang, Daniel McKinsey, N. Parveen, Minfang Yeh, A. St. J. Murphy, M. Solmaz, Adam Bernstein, Robert A. Taylor, E. Morrison, D. Woodward, A. Naylor, T. J. Whitis, S. J. Haselschwardt, D. Q. Huang, M.I. Lopes, N. Swanson, W. Wang, P. A. Terman, S. R. Eriksen, R. L. Mannino, Antonin Vacheret, M. Arthurs, S. Luitz, G. Pereira, Richard J. Smith, T. K. Edberg, Q. Riffard, D. Temples, K. Pushkin, J. E. Armstrong, J. H. Buckley, J. Genovesi, M. Tan, E. H. Miller, A. Cottle, I. Olcina, A. Bhatti, S. A. Hertel, C. Loniewski, Elena Korolkova, A. Stevens, G. R. C. Rischbieter, F. Neves, Bjoern Penning, M. Timalsina, L. Tvrznikova, Henning Flaecher, S. Alsum, I. Khurana, J. Y.K. Hor, J. E. Cutter, J. Reichenbacher, W. Ji, A. Fan, Duncan Carlsmith, D. Santone, A. Nilima, and R. Liu

Subjects
Physics, 010308 nuclear & particles physics, Active volume, 0103 physical sciences, Analytical chemistry, 010306 general physics, 01 natural sciences, Sensitivity (electronics)
Abstract

Author(s): Akerib, DS; Akerlof, CW; Alqahtani, A; Alsum, SK; Anderson, TJ; Angelides, N; Araujo, HM; Armstrong, JE; Arthurs, M; Bai, X; Balajthy, J; Balashov, S; Bang, J; Baxter, A; Bensinger, J; Bernard, EP; Bernstein, A; Bhatti, A; Biekert, A; Biesiadzinski, TP; Birch, HJ; Boast, KE; Boxer, B; Bras, P; Buckley, JH; Bugaev, VV; Burdin, S; Busenitz, JK; Cabrita, R; Carels, C; Carlsmith, DL; Carmona-Benitez, MC; Cascella, M; Chan, C; Chott, NI; Cole, A; Cottle, A; Cutter, JE; Dahl, CE; De Viveiros, L; Dobson, JEY; Druszkiewicz, E; Edberg, TK; Eriksen, SR; Fan, A; Fiorucci, S; Flaecher, H; Fraser, ED; Fruth, T; Gaitskell, RJ; Genovesi, J; Ghag, C; Gibson, E; Gilchriese, MGD; Gokhale, S; Van Der Grinten, MGD; Hall, CR; Harrison, A; Haselschwardt, SJ; Hertel, SA; Hor, JYK; Horn, M; Huang, DQ; Ignarra, CM; Jahangir, O; Ji, W; Johnson, J; Kaboth, AC; Kamaha, AC; Kamdin, K; Kazkaz, K; Khaitan, D; Khazov, A; Khurana, I; Kocher, CD; Korley, L; Korolkova, EV; Kras, J; Kraus, H; Kravitz, S; Kreczko, L; Krikler, B; Kudryavtsev, VA; Leason, EA; Lee, J | Abstract: The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double β decay search in parallel to the main science goal of discovering dark matter particle interactions. We report the expected LZ sensitivity to Xe136 neutrinoless double β decay, taking advantage of the significant (g600 kg) Xe136 mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of Xe136 is projected to be 1.06×1026 years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with Xe136 at 1.06×1027 years.

Published
2020

5. Simulations of Events for the LUX-ZEPLIN (LZ) Dark Matter Experiment

Author

T. Fruth, D. Seymour, J. Lin, W. Ji, J. McLaughlin, J. Palmer, L. Tvrznikova, M. Tan, P. R. Scovell, J. Genovesi, Ethan Bernard, E. H. Miller, F. L. H. Wolfs, G. Rutherford, V. Bugaev, J. Kras, D. Woodward, B. Lopez Paredes, M. Solmaz, E. Morrison, A. Biekert, I. Stancu, A. Lindote, K. E. Boast, A. Fan, Kareem Kazkaz, Juhyeong Lee, I. Olcina, A. Bhatti, A. Alqahtani, M. G. D. Gilchriese, S. Balashov, D. Santone, C. Carels, A. Piepke, Ross G. White, A. Cottle, M. E. Monzani, F.-T. Liao, T. P. Biesiadzinski, C. Loniewski, J. Y.K. Hor, J. E. Cutter, J. Reichenbacher, M. G. D. van der Grinten, N. I. Chott, P. Zarzhitsky, Matthew Szydagis, C. Levy, Sergey Burdin, K. J. Palladino, P. Rossiter, Elena Korolkova, Laura Manenti, G. R. C. Rischbieter, A. Baxter, D. R. Tiedt, C. E. Dahl, B. Boxer, T. K. Edberg, S. A. Hertel, Q. Riffard, U. Utku, K. C. Oliver-Mallory, R. W. Schnee, S. Pal, G. Pereira, Richard J. Smith, Michele Cascella, David Leonard, E. Druszkiewicz, D. S. Akerib, Mani Tripathi, A. Nilima, Simon Fayer, M. Timalsina, E. K. Pease, D. Temples, K. Pushkin, N. Angelides, P. Majewski, M. C. Carmona-Benitez, T. J. Anderson, N. Marangou, J. Busenitz, W. H. Lippincott, Michael Schubnell, A. B.M.R. Sazzad, C. Rhyne, J. E. Armstrong, V. N. Solovov, A. Manalaysay, A. Khazov, J.J. Silk, A. St. J. Murphy, Adam Bernstein, A. Naylor, D. Naim, S. Shaw, J. Li, S. Luitz, S. Gokhale, A. Cole, R. J. Gaitskell, J. H. Buckley, L. Korley, N. Parveen, K. Kamdin, R. Linehan, Minfang Yeh, W. C. Taylor, D. Q. Huang, B. J. Mount, T. A. Shutt, Catarina Silva, Carl W. Akerlof, Jilei Xu, C. Nehrkorn, H. J. Birch, J. Balajthy, M.I. Lopes, O. Jahangir, A. Monte, Daniel McKinsey, A. C. Kaboth, J. E. Y. Dobson, X. Xiang, A. Richards, C. Ghag, V. A. Kudryavtsev, C. Chan, A. Vaitkus, S. Kravitz, D. Khaitan, J. J. Wang, C. M. Ignarra, P. A. Terman, D. Bauer, M. F. Marzioni, A. Tomás, L. Kreczko, J. R. Watson, A. Harrison, R. L. Mannino, Antonin Vacheret, S. J. Haselschwardt, M. Arthurs, F. Neves, W. Wang, E. D. Fraser, P. Sorensen, E. Leason, T. J. Sumner, P. Brás, Henning Flaecher, Benjamin Krikler, K. T. Lesko, Yue Meng, T. J. Whitis, X. Bai, E. Mizrachi, J. Johnson, S. R. Eriksen, Duncan Carlsmith, Wolfgang Lorenzon, X. Liu, N. Swanson, J. R. Bensinger, Eli Gibson, A. Kamaha, H. N. Nelson, W. Turner, C. Nedlik, Henrique Araujo, C. R. Hall, R. Cabrita, H. Kraus, R. Liu, Richard Rosero, D. R. Tronstad, R. C. Webb, L. de Viveiros, K. Stifter, S. Fiorucci, J. Liao, J. A. Morad, J. Bang, J. A. Nikoleyczik, M. Horn, C. D. Kocher, J. M. Lyle, Robert A. Taylor, S. Alsum, I. Khurana, A. Stevens, and Bjoern Penning

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, hep-ex, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Dark matter, FOS: Physical sciences, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, Sensitivity (control systems), Projection (set theory), physics.ins-det, 010303 astronomy & astrophysics, Event (particle physics), Background radiation
Abstract

The LUX-ZEPLIN dark matter search aims to achieve a sensitivity to the WIMP-nucleon spin-independent cross-section down to (1--2)$\times10^{-12}$\,pb at a WIMP mass of 40 GeV/$c^2$. This paper describes the simulations framework that, along with radioactivity measurements, was used to support this projection, and also to provide mock data for validating reconstruction and analysis software. Of particular note are the event generators, which allow us to model the background radiation, and the detector response physics used in the production of raw signals, which can be converted into digitized waveforms similar to data from the operational detector. Inclusion of the detector response allows us to process simulated data using the same analysis routines as developed to process the experimental data., Comment: 24 pages, 19 figures; Corresponding Authors: A. Cottle, V. Kudryavtsev, D. Woodward

Published
2020
Full Text
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6. The LUX-ZEPLIN (LZ) Experiment

Author

P. Sorensen, J. C. Davis, J. J. Silk, M. C. Carmona-Benitez, E. Holtom, T. J. Anderson, A. B.M.R. Sazzad, V.V. Sosnovtsev, J. J. Cherwinka, V. B. Francis, A. Naylor, L. Korley, K. Kamdin, W. Craddock, P. Beltrame, X. Xiang, A. Manalaysay, P. R. Scovell, D. Q. Huang, Ethan Bernard, B. P. Tennyson, Yue Meng, I. B. Peterson, A. Cottle, A. Biekert, A. Kamaha, M. S. Witherell, R. Studley, M. E. Monzani, J. S. Campbell, Alexander Bolozdynya, C. Chiller, M. G. D. van der Grinten, Matthew Szydagis, C. O. Vuosalo, M. Tan, E. H. Miller, V. Bugaev, B. Boxer, R. Coughlen, J. Liao, I. Stancu, L. de Viveiros, P. MarrLaundrie, A. Lambert, L. Kreczko, J. R. Watson, Michael Schubnell, A. Piepke, S. Greenwood, J. P. Coleman, A. Geffre, D. Bauer, G. W. Shutt, W. H. Lippincott, Y. Qie, Dongming Mei, L. Sabarots, S. Hans, Bhawna Gomber, W. Skulski, J. A. Nikkel, S. A. Hertel, A. Arbuckle, F.-T. Liao, S. R. Eriksen, Daniel McKinsey, E. Druszkiewicz, Jilei Xu, P. Sutcliffe, H. J. Rose, C. Nehrkorn, K. T. Lesko, N. A. Larsen, C. Lee, B. Landerud, Martin Breidenbach, D. Molash, Candace Lynch, W. G. Jones, M. A. Olevitch, Ian S. Young, M. Sarychev, B. N. Edwards, A. Pagac, L. Tvrznikova, P. Ford, S. Luitz, T. J. R. Davison, D. Pagenkopf, P. Majewski, G. Gregerson, Chao Zhang, Mary Severson, A. Currie, Ross G. White, Carl Gwilliam, S. J. Patton, A. J. Bailey, David Colling, Minfang Yeh, K. Wilson, P. Rossiter, S. Alsum, G. Pereira, V. M. Gehman, A. Dushkin, I. Khurana, Richard J. Smith, Benjamin Krikler, N. Marangou, John Heise, C. Loniewski, J. Bang, J. A. Nikoleyczik, J. Belle, D. Yu. Akimov, E. Mizrachi, C. Levy, M. R. While, A. Dobi, H. N. Nelson, X. Bai, J. Johnson, J. O'Dell, W. T. Kim, S. Weatherly, L. Wang, P. Johnson, Elena Korolkova, S. Pierson, W. T. Emmet, K. Stifter, B. Birrittella, T. Tope, A. Richards, Yufeng Wang, Ren-Jie Wang, J. Genovesi, C. Maupin, Kathrin C. Walker, G. R. C. Rischbieter, Eli Gibson, Yeongduk Kim, W. Turner, S. D. Worm, E. M. Boulton, G. Rutherford, S. Kyre, J. Mock, Seth Hillbrand, D. White, Q. Xiao, Sridhara Dasu, R. Leonard, J. Y.K. Hor, B. Holbrook, C. Nedlik, S. Fiorucci, J. Keefner, J. Kras, J. Yin, F. Froborg, F. Neves, D. Khaitan, S. J. Haselschwardt, L. Oxborough, D.S. Hamilton, O. Hitchcock, J.P. da Cunha, J.S. Saba, Henrique Araujo, I. Olcina, David Leonard, A. Bhatti, U. Utku, W. J. Wisniewski, S. Powell, M. Pangilinan, F.L.H. Wolfs, J. Barthel, D. Naim, D. Hemer, M. Timalsina, B. J. Mount, T. A. Shutt, S. Shaw, J. A. Morad, N. Swanson, J.P. Rodrigues, J. Nesbit, W.L. Waldron, J. E. Y. Dobson, J. Busenitz, C. R. Hall, N. Stern, C. Rhyne, A. Cole, R. J. Gaitskell, T. K. Edberg, Q. Riffard, O. Jahangir, B. G. Lenardo, D. Temples, C. Chan, C. E. Tull, A. Vaitkus, D. Garcia, S. Kravitz, T. G. Gonda, M. Elnimr, K. Pushkin, M. Horn, Kareem Kazkaz, H. Kraus, J. Li, C. H. Faham, T.M. Stiegler, A. Monte, C. D. Kocher, T. P. Biesiadzinski, C. Ghag, J. E. Armstrong, H. S. Lee, W. R. Edwards, K. J. Palladino, T. Benson, J. H. Buckley, Z. J. Minaker, Carl W. Akerlof, R. Bunker, M. Solmaz, M. Koyuncu, J.R. Verbus, J. M. Lyle, C. E. Dahl, E. Morrison, J. E. Cutter, J. Reichenbacher, H.J. Krebs, J. So, S. Branson, Peter Bauer, H. Auyeung, D. Seymour, Michele Cascella, A. A. Chiller, Mani Tripathi, Richard Rosero, D. R. Tronstad, R. Liu, M. Khaleeq, N. Decheine, M. N. Irving, Yunpeng Liu, S. Uvarov, J. McLaughlin, A. R. Smith, S. Dardin, J. Thomson, K. Sundarnath, Robert A. Taylor, Ben Carlson, T. Harrington, C. T. McConnell, E. K. Pease, A. Greenall, T. J. Whitis, M. F. Marzioni, C. Silva, V. Kasey, D. Rynders, R. C. Webb, J. Palmer, P. Brás, V. N. Solovov, T.J. Martin, R. Conley, P. A. Terman, A. Tomás, B. Lopez Paredes, K. E. Boast, J. T. White, D. Markley, A. Konovalov, A. Lindote, A. Alquahtani, L. Reichhart, D.C. Malling, K. C. Oliver-Mallory, E. Leason, Juhyeong Lee, D. Curran, Henning Flaecher, S. Balashov, A.V. Khromov, B. N. Ratcliff, J. Migneault, A. V. Kumpan, Simon Fayer, Antonin Vacheret, C. Hjemfelt, R. Linehan, M. Arthurs, S. Stephenson, V. M. Palmaccio, N. I. Chott, M.R. Stark, Duncan Carlsmith, Wenzhao Wei, M. Utes, Laura Manenti, A. Stevens, D. J. Taylor, R. E. Smith, V. A. Kudryavtsev, S. Walcott, C. M. Ignarra, N.J. Gantos, R. G. Jacobsen, M. Racine, A. Fan, Bjoern Penning, J. Va’vra, A. Harrison, H. Oh, J. Makkinje, W. Ji, R. Rucinski, Sergey Burdin, A. Baxter, D. Santone, E. Voirin, R.M. Gerhard, T.W. Hurteau, K.J. Thomas, X. Liu, R. Gelfand, T. Vietanen, A. Nilima, R. M. Preece, A. Laundrie, Mikkel B. Johnson, K. Hanzel, F. G. O'Neill, A. Khazov, W. C. Taylor, J. Balajthy, M.J. Barry, K. O’Sullivan, D. Lucero, A. C. Kaboth, R. L. Mannino, J. D. Wolfs, J. Lin, C. Pereira, N. Angelides, S. Gokhale, A. St. J. Murphy, Adam Bernstein, M. Hoff, M.I. Lopes, M. G. D. Gilchriese, C. Carels, I. M. Fogarty Florang, J. Edwards, S. N. Jeffery, R. W. Schnee, S. Pal, R. Bramante, T. Fruth, T. J. Sumner, W. H. To, Wolfgang Lorenzon, J. R. Bensinger, J. J. Wang, D. Woodward, C. Hasselkus, K. Skarpaas, D. R. Tiedt, D. S. Akerib, and Science and Technology Facilities Council (STFC)

Subjects
Nuclear and High Energy Physics, Technology, Physics - Instrumentation and Detectors, 0299 Other Physical Sciences, Dark matter, FOS: Physical sciences, chemistry.chemical_element, Scintillator, 01 natural sciences, 7. Clean energy, Physics, Particles & Fields, High Energy Physics - Experiment, Nuclear physics, LEAD, High Energy Physics - Experiment (hep-ex), XENON, Low energy, Xenon, WIMP, 0103 physical sciences, 0201 Astronomical and Space Sciences, 010306 general physics, Nuclear Science & Technology, Underground, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Instruments & Instrumentation, physics.ins-det, Physics, Dark matter detector, Time projection chamber, Science & Technology, 010308 nuclear & particles physics, hep-ex, Detector, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Neutron capture, Physics, Nuclear, chemistry, Physical Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Liquid xenon, EMISSION, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract

We describe the design and assembly of the LUX-ZEPLIN experiment, a direct detection search for cosmic WIMP dark matter particles. The centerpiece of the experiment is a large liquid xenon time projection chamber sensitive to low energy nuclear recoils. Rejection of backgrounds is enhanced by a Xe skin veto detector and by a liquid scintillator Outer Detector loaded with gadolinium for efficient neutron capture and tagging. LZ is located in the Davis Cavern at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. We describe the major subsystems of the experiment and its key design features and requirements. info:eu-repo/semantics/publishedVersion

Published
2019

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