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The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs
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 Akerib2020_Article_TheLUX-ZEPLINLZRadioactivityAn.pdf | Published version | 1.31 MB | Adobe PDF | View/Open |
| Title: | The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs |
| Authors: | Akerib, DS Akerlof, CW Akimov, DY Alquahtani, A Alsum, SK Anderson, TJ Angelides, N Araujo, HM Arbuckle, A Armstrong, JE Arthurs, M Auyeung, H Aviles, S Bai, X Bailey, AJ Balajthy, J Balashov, S Bang, J Barry, MJ Bauer, D Bauer, P Baxter, A Belle, J Beltrame, P Bensinger, J Benson, T Bernard, EP Bernstein, A Bhatti, A Biekert, A Biesiadzinski, TP Birch, HJ Birrittella, B Boast, KE Bolozdynya, AI Boulton, EM Boxer, B Bramante, R Branson, S Bras, P Breidenbach, M Brew, CAJ Buckley, JH Bugaev, VV Bunker, R Burdin, S Busenitz, JK Cabrita, R Campbell, JS Carels, C Carlsmith, DL Carlson, B Carmona-Benitez, MC Cascella, M Chan, C Cherwinka, JJ Chiller, AA Chiller, C Chott, NI Cole, A Coleman, J Colling, D Conley, RA Cottle, A Coughlen, R Cox, G Craddock, WW Curran, D Currie, A Cutter, JE Da Cunha, JP Dahl, CE Dardin, S Dasu, S Davis, J Davison, TJR De Viveiros, L Decheine, N Dobi, A Dobson, JEY Druszkiewicz, E Dushkin, A Edberg, TK Edwards, WR Edwards, BN Edwards, J Elnimr, MM Emmet, WT Eriksen, SR Faham, CH Fan, A Fayer, S Fiorucci, S Flaecher, H Florang, IMF Ford, P Francis, VB Fraser, ED Froborg, F Fruth, T Gaitskell, RJ Gantos, NJ Garcia, D Gehman, VM Gelfand, R Genovesi, J Gerhard, RM Ghag, C Gibson, E Gilchriese, MGD Gokhale, S Gomber, B Gonda, TG Greenall, A Greenwood, S Gregerson, G Van der Grinten, MGD Gwilliam, CB Hall, CR Hamilton, D Hans, S Hanzel, K Harrington, T Harrison, A Harrison, J Hasselkus, C Haselschwardt, SJ Hemer, D Hertel, SA Heise, J Hillbrand, S Hitchcock, O Hjemfelt, C Hoff, MD Holbrook, B Holtom, E Hor, JY-K Horn, M Huang, DQ Hurteau, TW Ignarra, CM Irving, MN Jacobsen, RG Jahangir, O Jeffery, SN Ji, W Johnson, M Johnson, J Johnson, P Jones, WG Kaboth, AC Kamaha, A Kamdin, K Kasey, V Kazkaz, K Keefner, J Khaitan, D Khaleeq, M Khazov, A Khromov, AV Khurana, I Kim, YD Kim, WT Kocher, CD Kodroff, D Konovalov, AM Korley, L Korolkova, EV Koyuncu, M Kras, J Kraus, H Kravitz, SW Krebs, HJ Kreczko, L Krikler, B Kudryavtsev, VA Kumpan, AV Kyre, S Lambert, AR Landerud, B Larsen, NA Laundrie, A Leason, EA Lee, HS Lee, J Lee, C Lenardo, BG Leonard, DS Leonard, R Lesko, KT Levy, C Li, J Liu, Y Liao, J Liao, F-T Lin, J Lindote, A Linehan, R Lippincott, WH Liu, R Liu, X Loniewski, C Lopes, MI Lopez-Asamar, E Paredes, BL Lorenzon, W Lucero, D Luitz, S Lyle, JM Lynch, C Majewski, PA Makkinje, J Malling, DC Manalaysay, A Manenti, L Mannino, RL Marangou, N Markley, DJ MarrLaundrie, P Martin, TJ Marzioni, MF Maupin, C McConnell, CT McKinsey, DN McLaughlin, J Mei, D-M Meng, Y Miller, EH Minaker, ZJ Mizrachi, E Mock, J Molash, D Monte, A Monzani, ME Morad, JA Morrison, E Mount, BJ Murphy, ASJ Naim, D Naylor, A Nedlik, C Nehrkorn, C Nelson, HN Nesbit, J Neves, F Nikkel, JA Nikoleyczik, JA Nilima, A O'Dell, J Oh, H O'Neill, FG O'Sullivan, K Olcina, I Olevitch, MA Oliver-Mallory, KC Oxborough, L Pagac, A Pagenkopf, D Pal, S Palladino, KJ Palmaccio, VM Palmer, J Pangilinan, M Parveen, N Patton, SJ Pease, EK Penning, BP Pereira, G Pereira, C Peterson, IB Piepke, A Pierson, S Powell, S Preece, RM Pushkin, K Qie, Y Racine, M Ratcliff, BN Reichenbacher, J Reichhart, L Rhyne, CA Richards, A Riffard, Q Rischbieter, GRC Rodrigues, JP Rose, HJ Rosero, R Rossiter, P Rucinski, R Rutherford, G Saba, JS Sabarots, L Santone, D Sarychev, M Sazzad, ABMR Schnee, RW Schubnell, M Scovell, PR Severson, M Seymour, D Shaw, S Shutt, GW Shutt, TA Silk, JJ Silva, C Skarpaas, K Skulski, W Smith, AR Smith, RJ Smith, RE So, J Solmaz, M Solovov, VN Sorensen, P Sosnovtsev, VV Stancu, I Stark, MR Stephenson, S Stern, N Stevens, A Stiegler, TM Stifter, K Studley, R Sumner, TJ Sundarnath, K Sutcliffe, P Swanson, N Szydagis, M Tan, M Taylor, WC Taylor, R Taylor, DJ Temples, D Tennyson, BP Terman, PA Thomas, KJ Thomson, JA Tiedt, DR Timalsina, M To, WH Tomas, A Tope, TE Tripathi, M Tronstad, DR Tull, CE Turner, W Tvrznikova, L Utes, M Utku, U Uvarov, S Va'vra, J Vacheret, A Vaitkus, A Verbus, JR Vietanen, T Voirin, E Vuosalo, CO Walcott, S Waldron, WL Walker, K Wang, JJ Wang, R Wang, L Wang, W Wang, Y Watson, JR Migneault, J Weatherly, S Webb, RC Wei, W-Z While, M White, RG White, JT White, DT Whitis, TJ Wisniewski, WJ Wilson, K Witherell, MS Wolfs, FLH Wolfs, JD Woodward, D Worm, SD Xiang, X Xiao, Q Xu, J Yeh, M Yin, J Young, I Zhang, C Zarzhitsky, P |
| Item Type: | Journal Article |
| Abstract: | LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above 1.4×10−48cm2 for a WIMP mass of 40GeV/c2 and a 1000days exposure. LZ achieves this sensitivity through a combination of a large 5.6t 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. |
| Issue Date: | 10-Nov-2020 |
| Date of Acceptance: | 29-Aug-2020 |
| URI: | http://hdl.handle.net/10044/1/85718 |
| DOI: | 10.1140/epjc/s10052-020-8420-x |
| ISSN: | 1124-1861 |
| Publisher: | EDP Sciences |
| Start Page: | 1 |
| End Page: | 52 |
| Journal / Book Title: | European Physical Journal C: Particles and Fields |
| Volume: | 80 |
| Issue: | 11 |
| Copyright Statement: | © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
| Sponsor/Funder: | Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) |
| Funder's Grant Number: | ST/M003655/1 ST/P00377X/1 |
| Keywords: | Science & Technology Physical Sciences Physics, Particles & Fields Physics CONSTRUCTION MATERIALS DETECTOR BACKGROUNDS IMPURITIES Science & Technology Physical Sciences Physics, Particles & Fields Physics CONSTRUCTION MATERIALS DETECTOR BACKGROUNDS IMPURITIES physics.ins-det physics.ins-det hep-ex Nuclear & Particles Physics 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics 0206 Quantum Physics |
| Publication Status: | Published |
| Article Number: | ARTN 1044 |
| Online Publication Date: | 2020-11-10 |
| Appears in Collections: | Physics High Energy Physics Faculty of Natural Sciences |
This item is licensed under a Creative Commons License
