학술논문
Material radiopurity control in the XENONnT experiment
Document Type
article
Author
E. Aprile; K. Abe; F. Agostini; S. Ahmed Maouloud; M. Alfonsi; L. Althueser; E. Angelino; J. R. Angevaare; V. C. Antochi; D. Antón Martin; F. Arneodo; L. Baudis; A. L. Baxter; L. Bellagamba; R. Biondi; A. Bismark; A. Brown; S. Bruenner; G. Bruno; R. Budnik; C. Capelli; J. M. R. Cardoso; D. Cichon; B. Cimmino; M. Clark; A. P. Colijn; J. Conrad; J. J. Cuenca-García; J. P. Cussonneau; V. D’Andrea; M. P. Decowski; P. Di Gangi; S. Di Pede; A. Di Giovanni; R. Di Stefano; S. Diglio; A. Elykov; S. Farrell; A. D. Ferella; H. Fischer; W. Fulgione; P. Gaemers; R. Gaior; M. Galloway; F. Gao; R. Glade-Beucke; L. Grandi; J. Grigat; A. Higuera; C. Hils; K. Hiraide; L. Hoetzsch; J. Howlett; M. Iacovacci; Y. Itow; J. Jakob; F. Joerg; N. Kato; P. Kavrigin; S. Kazama; M. Kobayashi; G. Koltman; A. Kopec; H. Landsman; R. F. Lang; L. Levinson; I. Li; S. Liang; S. Lindemann; M. Lindner; K. Liu; F. Lombardi; J. Long; J. A. M. Lopes; Y. Ma; C. Macolino; J. Mahlstedt; A. Mancuso; L. Manenti; A. Manfredini; F. Marignetti; T. Marrodán Undagoitia; K. Martens; J. Masbou; D. Masson; E. Masson; S. Mastroianni; M. Messina; K. Miuchi; K. Mizukoshi; A. Molinario; S. Moriyama; K. Morå; Y. Mosbacher; M. Murra; K. Ni; U. Oberlack; J. Palacio; R. Peres; J. Pienaar; M. Pierre; V. Pizzella; G. Plante; J. Qi; J. Qin; D. Ramírez García; S. Reichard; A. Rocchetti; N. Rupp; L. Sanchez; J. M. F. dos Santos; G. Sartorelli; J. Schreiner; D. Schulte; H. Schulze Eißing; M. Schumann; L. Scotto Lavina; M. Selvi; F. Semeria; P. Shagin; E. Shockley; M. Silva; H. Simgen; A. Takeda; P. L. Tan; A. Terliuk; C. Therreau; D. Thers; F. Toschi; G. Trinchero; C. Tunnell; F. Tönnies; K. Valerius; G. Volta; Y. Wei; C. Weinheimer; M. Weiss; D. Wenz; J. Westermann; C. Wittweg; T. Wolf; Z. Xu; M. Yamashita; L. Yang; J. Ye; L. Yuan; G. Zavattini; Y. Zhang; M. Zhong; T. Zhu; J. P. Zopounidis; XENON Collaboration; M. Laubenstein; S. Nisi
Source
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-21 (2022)
Subject
Language
English
ISSN
1434-6052
64247759
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.