NEXT双β衰变实验中氡诱导本底的测量
仪器与探测器
2018-10-11 v3 高能物理 - 实验
核实验
摘要
详细讨论了在所谓Run-II期间使用Xe贫化氙的NEXT-White探测器中内部Rn活度的测量，及其对NEXT中双β衰变搜寻的影响。该活度通过Rn及其α发射子体在 fiducial volume 中诱导的α产生率来测量。比活度测得为~mBq/m。还通过对沉积在时间投影室阴极上的Bi子体离子的衰变表征了氡诱导电子。由我们的研究得出结论，氡诱导本底足够低以使得成功的NEXT-100物理计划成为可能，因为无中微子双β衰变样本中的预计速率贡献不应超过0.1~counts/yr。
引用
@article{arxiv.1804.00471,
title = {Measurement of radon-induced backgrounds in the NEXT double beta decay experiment},
author = {NEXT Collaboration and P. Novella and B. Palmeiro and A. Simón and M. Sorel and C. Adams and P. Ferrario and G. Martínez-Lema and F. Monrabal and G. Zuzel and J. J. Gómez-Cadenas and V. Álvarez and L. Arazi and C. D. R Azevedo and K. Bailey and F. Ballester and J. M. Benlloch-Rodríguez and F. I. G. M. Borges and A. Botas and S. Cárcel and J. V. Carrión and S. Cebrián and C. A. N. Conde and J. Díaz and M. Diesburg and J. Escada and R. Esteve and R. Felkai and A. F. M. Fernandes and L. M. P. Fernandes and A. L. Ferreira and E. D. C. Freitas and J. Generowicz and A. Goldschmidt and D. González-Díaz and R. Guenette and R. M. Gutiérrez and K. Hafidi and J. Hauptman and C. A. O. Henriques and A. I. Hernandez and J. A. Hernando Morata and V. Herrero and S. Johnston and B. J. P. Jones and M. Kekic and L. Labarga and A. Laing and P. Lebrun and N. López-March and M. Losada and R. D. P. Mano and J. Martín-Albo and A. Martínez and A. McDonald and C. M. B. Monteiro and F. J. Mora and J. Muñoz Vidal and M. Musti and M. Nebot-Guinot and D. R. Nygren and A. Para and J. Pérez and F. Psihas and M. Querol and J. Renner and J. Repond and S. Riordan and L. Ripoll and J. Rodríguez and L. Rogers and C. Romo-Luque and F. P. Santos and J. M. F. dos Santos and C. Sofka and T. Stiegler and J. F. Toledo and J. Torrent and J. F. C. A. Veloso and R. Webb and J. T. White and N. Yahlali},
journal= {arXiv preprint arXiv:1804.00471},
year = {2018}
}
备注
28 pages, 10 figures, 6 tables. Version accepted for publication in JHEP