基于实验测量的 MAJORANA DEMONSTRATOR 背景投影：蒙特卡罗不确定性传播
核实验
2026-02-20 v1 仪器与探测器
摘要
背景指数是用于投影和计算中微子中和双β衰变（）实验半衰期灵敏度的重要参数。本文提出一种新型分析框架，通过具体活度、质量和实验组件的模拟效率作为分布来计算背景指数。该贝叶斯框架包含一种统一方法，将实验测量得到的具体活度进行合并。采用蒙特卡罗不确定性传播方法，从具体活度、质量和效率分布构建背景指数分布。本分析方法应用于 MAJORANA DEMONSTRATOR，该装置部署了富含 Ge 的高纯度锗探测器阵列，以搜索 。该框架从 DEMONSTRATOR 组件中 Th 和 U 的具体活度投影出均值背景指数为 cts/(keV kg yr)。
关键词
引用
@article{arxiv.2408.06786,
title = {An assay-based background projection for the MAJORANA DEMONSTRATOR using Monte Carlo Uncertainty Propagation},
author = {I. J. Arnquist and F. T. Avignone and A. S. Barabash and C. J. Barton and K. H. Bhimani and E. Blalock and B. Bos and M. Busch and T. S. Caldwell and Y. -D. Chan and C. D. Christofferson and P. -H. Chu and M. L. Clark and C. Cuesta and J. A. Detwiler and Yu. Efremenko and H. Ejiri and S. R. Elliott and N. Fuad and G. K. Giovanetti and M. P. Green and J. Gruszko and I. S. Guinn and V. E. Guiseppe and C. R. Haufe and R. Henning and D. Hervas Aguilar and E. W. Hoppe and A. Hostiuc and M. F. Kidd and I. Kim and R. T. Kouzes and T. E. Lannen and A. Li and J. M. López-Castaño and R. D. Martin and R. Massarczyk and S. J. Meijer and T. K. Oli and L. S. Paudel and W. Pettus and A. W. P. Poon and D. C. Radford and A. L. Reine and K. Rielage and N. W. Ruof and D. C. Schaper and S. J. Schleich and D. Tedeschi and R. L. Varner and S. Vasilyev and S. L. Watkins and J. F. Wilkerson and C. Wiseman and W. Xu and C. -H. Yu},
journal= {arXiv preprint arXiv:2408.06786},
year = {2026}
}
备注
9 pages, 3 figures