학술논문

Material radiopurity control in the XENONnT experiment
Document Type
article
Author
E. AprileK. AbeF. AgostiniS. Ahmed MaouloudM. AlfonsiL. AlthueserE. AngelinoJ. R. AngevaareV. C. AntochiD. Antón MartinF. ArneodoL. BaudisA. L. BaxterL. BellagambaR. BiondiA. BismarkA. BrownS. BruennerG. BrunoR. BudnikC. CapelliJ. M. R. CardosoD. CichonB. CimminoM. ClarkA. P. ColijnJ. ConradJ. J. Cuenca-GarcíaJ. P. CussonneauV. D’AndreaM. P. DecowskiP. Di GangiS. Di PedeA. Di GiovanniR. Di StefanoS. DiglioA. ElykovS. FarrellA. D. FerellaH. FischerW. FulgioneP. GaemersR. GaiorM. GallowayF. GaoR. Glade-BeuckeL. GrandiJ. GrigatA. HigueraC. HilsK. HiraideL. HoetzschJ. HowlettM. IacovacciY. ItowJ. JakobF. JoergN. KatoP. KavriginS. KazamaM. KobayashiG. KoltmanA. KopecH. LandsmanR. F. LangL. LevinsonI. LiS. LiangS. LindemannM. LindnerK. LiuF. LombardiJ. LongJ. A. M. LopesY. MaC. MacolinoJ. MahlstedtA. MancusoL. ManentiA. ManfrediniF. MarignettiT. Marrodán UndagoitiaK. MartensJ. MasbouD. MassonE. MassonS. MastroianniM. MessinaK. MiuchiK. MizukoshiA. MolinarioS. MoriyamaK. MoråY. MosbacherM. MurraK. NiU. OberlackJ. PalacioR. PeresJ. PienaarM. PierreV. PizzellaG. PlanteJ. QiJ. QinD. Ramírez GarcíaS. ReichardA. RocchettiN. RuppL. SanchezJ. M. F. dos SantosG. SartorelliJ. SchreinerD. SchulteH. Schulze EißingM. SchumannL. Scotto LavinaM. SelviF. SemeriaP. ShaginE. ShockleyM. SilvaH. SimgenA. TakedaP. L. TanA. TerliukC. TherreauD. ThersF. ToschiG. TrincheroC. TunnellF. TönniesK. ValeriusG. VoltaY. WeiC. WeinheimerM. WeissD. WenzJ. WestermannC. WittwegT. WolfZ. XuM. YamashitaL. YangJ. YeL. YuanG. ZavattiniY. ZhangM. ZhongT. ZhuJ. P. ZopounidisXENON CollaborationM. LaubensteinS. Nisi
Source
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-21 (2022)
Subject
Astrophysics
QB460-466
Nuclear and particle physics. Atomic energy. Radioactivity
QC770-798
Language
English
ISSN
1434-6052
64247759
Abstract
Abstract The selection of low-radioactive construction materials is of the utmost importance for rare-event searches and thus critical to the XENONnT experiment. Results of an extensive radioassay program are reported, in which material samples have been screened with gamma-ray spectroscopy, mass spectrometry, and $$^{222}$$ 222 Rn emanation measurements. Furthermore, the cleanliness procedures applied to remove or mitigate surface contamination of detector materials are described. Screening results, used as inputs for a XENONnT Monte Carlo simulation, predict a reduction of materials background ( $$\sim $$ ∼ 17%) with respect to its predecessor XENON1T. Through radon emanation measurements, the expected $$^{222}$$ 222 Rn activity concentration in XENONnT is determined to be 4.2 ( $$^{+0.5}_{-0.7}$$ - 0.7 + 0.5 ) $$\upmu $$ μ Bq/kg, a factor three lower with respect to XENON1T. This radon concentration will be further suppressed by means of the novel radon distillation system.