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, M Laubenstein, S Nisi
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 <mml:math xmlns:mml="https://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/> <mml:mn>222</mml:mn></mml:msup> </mml:math> Rn emanation measurements. Furthermore, the cleanliness procedures applied to remove or mitigate surface contamination of detector materials are described...
2022: European Physical Journal. C, Particles and Fields