XENON100实验中电磁本底的研究
天体物理仪器与方法
2015-03-17 v3 宇宙学与河外天体物理
摘要
位于格兰萨索国家实验室的XENON100实验旨在通过弱相互作用大质量粒子与氙原子核的弹性散射直接探测暗物质。我们全面研究了来自探测器和屏蔽材料内部放射性衰变以及本征污染所预期的电子反冲本底。基于使用详细几何结构的GEANT4蒙特卡罗模拟以及所有探测器组件的实测放射性，我们预测在WIMP搜索能量范围（0-100 keV）内，30公斤有效质量中的电子反冲本底小于10e-2事件/(公斤·天·千电子伏)，与实验设计目标一致。预测的本底谱与2009年秋季探测器调试期间获取的数据非常吻合。
引用
@article{arxiv.1101.3866,
title = {Study of the electromagnetic background in the XENON100 experiment},
author = {XENON100 Collaboration and E. Aprile and K. Arisaka and F. Arneodo and A. Askin and L. Baudis and A. Behrens and K. Bokeloh and E. Brown and J. M. R. Cardoso and B. Choi and D. Cline and S. Fattori and A. D. Ferella and K. -L. Giboni and A. Kish and C. W. Lam and J. Lamblin and R. F. Lang and K. E. Lim and Q. Lin and S. Lindemann and M. Lindner and J. A. M. Lopes and K. Lung and T. Marrodan Undagoitia and Y. Mei and A. J. Melgarejo Fernandez and K. Ni and U. Oberlack and S. E. A. Orrigo and E. Pantic and G. Plante and A. C. C. Ribeiro and R. Santorelli and J. M. F. dos Santos and M. Schumann and P. Shagin and H. Simgen and A. Teymourian and D. Thers and E. Tziaferi and H. Wang and M. Weber and C. Weinheimer},
journal= {arXiv preprint arXiv:1101.3866},
year = {2015}
}
备注
10 pages, 12 figures The updated version of the paper takes into account the new measurement of $^{136}$Xe 2$\nu$ $\beta\beta$ decay by EXO-200, with a half-life of (2.11$\pm0.04\pm$0.021)$\times10^{21}$ years