XENONnT实验将氡去除至太阳中微子水平
仪器与探测器
2025-04-28 v2 高能物理 - 实验
摘要
XENONnT实验在其5.9吨液氙内部探测器中实现了极低的氡-222活度浓度，达到(0.90 ± 0.01 统计误差 ± 0.07 系统误差) μBq/kg，相当于每吨氙中约430个氡-222原子。这是通过在严格选材后，采用低温精馏进行主动在线除氡实现的。所达到的氡-222活度浓度比目前正在运行的其他用于暗物质搜索的多吨级液氙探测器低五倍。这一突破使得能够以世界领先的灵敏度，探寻粒子物理学标准模型之外的各种稀有事件。超低的氡-222水平已将探测器中氡诱发的本底率降低到首次与太阳中微子诱发的本底相当的水平，后者即将成为液氙基探测器中主要的不可约本底。
引用
@article{arxiv.2502.04209,
title = {Radon Removal in XENONnT down to the Solar Neutrino Level},
author = {E. Aprile and J. Aalbers and K. Abe and S. Ahmed Maouloud and L. Althueser and B. Andrieu and E. Angelino and D. Antón Martin and F. Arneodo and L. Baudis and M. Bazyk and L. Bellagamba and R. Biondi and A. Bismark and K. Boese and A. Brown and G. Bruno and R. Budnik and C. Cai and C. Capelli and J. M. R. Cardoso and A. P. Cimental Chávez and A. P. Colijn and J. Conrad and J. J. Cuenca-García and V. D'Andrea and L. C. Daniel Garcia and M. P. Decowski and A. Deisting and C. Di Donato and P. Di Gangi and S. Diglio and K. Eitel and S. el Morabit and A. Elykov and A. D. Ferella and C. Ferrari and H. Fischer and T. Flehmke and M. Flierman and W. Fulgione and C. Fuselli and P. Gaemers and R. Gaior and M. Galloway and F. Gao and S. Ghosh and R. Giacomobono and R. Glade-Beucke and L. Grandi and J. Grigat and H. Guan and M. Guida and P. Gyorgy and R. Hammann and A. Higuera and C. Hils and L. Hoetzsch and N. F. Hood and M. Iacovacci and Y. Itow and J. Jakob and F. Joerg and Y. Kaminaga and M. Kara and P. Kavrigin and S. Kazama and P. Kharbanda and M. Kobayashi and D. Koke and A. Kopec and H. Landsman and R. F. Lang and L. Levinson and I. Li and S. Li and S. Liang and Z. Liang and Y. -T. Lin and S. Lindemann and M. Lindner and K. Liu and M. Liu and J. Loizeau and F. Lombardi and J. Long and J. A. M. Lopes and T. Luce and Y. Ma and C. Macolino and J. Mahlstedt and A. Mancuso and L. Manenti and F. Marignetti and T. Marrodán Undagoitia and K. Martens and J. Masbou and E. Masson and S. Mastroianni and A. Melchiorre and J. Merz and M. Messina and A. Michael and K. Miuchi and A. Molinario and S. Moriyama and K. Morå and Y. Mosbacher and M. Murra and J. Müller and K. Ni and U. Oberlack and B. Paetsch and Y. Pan and Q. Pellegrini and R. Peres and C. Peters and J. Pienaar and M. Pierre and G. Plante and T. R. Pollmann and L. Principe and J. Qi and J. Qin and D. Ramírez García and M. Rajado and R. Singh and L. Sanchez and J. M. F. dos Santos and I. Sarnoff and G. Sartorelli and J. Schreiner and D. Schulte and P. Schulte and H. Schulze Eißing and M. Schumann and L. Scotto Lavina and M. Selvi and F. Semeria and P. Shagin and S. Shi and J. Shi and M. Silva and H. Simgen and C. Szyszka and A. Takeda and Y. Takeuchi and P. -L. Tan and D. Thers and F. Toschi and G. Trinchero and C. D. Tunnell and F. Tönnies and K. Valerius and S. Vecchi and S. Vetter and F. I. Villazon Solar and G. Volta and C. Weinheimer and M. Weiss and D. Wenz and C. Wittweg and V. H. S. Wu and Y. Xing and D. Xu and Z. Xu and M. Yamashita and L. Yang and J. Ye and L. Yuan and G. Zavattini and M. Zhong},
journal= {arXiv preprint arXiv:2502.04209},
year = {2025}
}