CUORE-0 实验的初步性能
仪器与探测器
2014-08-04 v2 高能物理 - 实验
核实验
摘要
CUORE-0 是一种低温探测器，利用二氧化碲（TeO_2）测热计阵列来搜寻 ^{130}Te 的无中微子双贝塔衰变。我们展示了首次数据分析结果，总 TeO_2 曝光量为 7.1 kg y，重点在于本底测量和能量分辨率。在无中微子双贝塔衰变感兴趣区域（2.47 至 2.57 MeV）以及以 {\alpha} 本底为主的区域（2.70 至 3.90 MeV）测得的本底率分别为 0.071 \pm 0.011 和 0.019 \pm 0.002 counts/keV/kg/y。后一结果代表相较于前身实验 Cuoricino 提升了 6 倍。这些结果验证了我们对 CUORE-0 本底源的理解，这是外推至完整 CUORE 探测器的基础。在感兴趣区域获得的能量分辨率（半高全宽）为 5.7 keV。基于感兴趣区域测得的本底率和能量分辨率，预计 CUORE-0 在一年运行时间内的半衰期灵敏度将超过 Cuoricino 观测到的下限。
引用
@article{arxiv.1402.0922,
title = {Initial performance of the CUORE-0 experiment},
author = {CUORE Collaboration and D. R. Artusa and F. T. Avignone and O. Azzolini and M. Balata and T. I. Banks and G. Bari and J. Beeman and F. Bellini and A. Bersani and M. Biassoni and C. Brofferio and C. Bucci and X. Z. Cai and L. Canonica and X. G. Cao and S. Capelli and L. Carbone and L. Cardani and M. Carrettoni and N. Casali and D. Chiesa and N. Chott and M. Clemenza and C. Cosmelli and O. Cremonesi and R. J. Creswick and I. Dafinei and A. Dally and V. Datskov and M. M. Deninno and S. Di Domizio and M. L. di Vacri and L. Ejzak and D. Q. Fang and H. A. Farach and M. Faverzani and G. Fernandes and E. Ferri and F. Ferroni and E. Fiorini and S. J. Freedman and B. K. Fujikawa and A. Giachero and L. Gironi and A. Giuliani and J. Goett and P. Gorla and C. Gotti and T. D. Gutierrez and E. E. Haller and K. Han and K. M. Heeger and R. Hennings-Yeomans and H. Z. Huang and R. Kadel and K. Kazkaz and G. Keppel and Yu. G. Kolomensky and Y. L. Li and K. E. Lim and X. Liu and Y. G. Ma and C. Maiano and M. Maino and M. Martinez and R. H. Maruyama and Y. Mei and N. Moggi and S. Morganti and S. Nisi and C. Nones and E. B. Norman and A. Nucciotti and T. O'Donnell and F. Orio and D. Orlandi and J. L. Ouellet and M. Pallavicini and V. Palmieri and L. Pattavina and M. Pavan and M. Pedretti and G. Pessina and V. Pettinacci and G. Piperno and S. Pirro and E. Previtali and C. Rosenfeld and C. Rusconi and E. Sala and S. Sangiorgio and N. D. Scielzo and M. Sisti and A. R. Smith and L. Taffarello and M. Tenconi and F. Terranova and W. D. Tian and C. Tomei and S. Trentalange and G. Ventura and M. Vignati and B. S. Wang and H. W. Wang and L. Wielgus and J. Wilson and L. A. Winslow and T. Wise and L. Zanotti and C. Zarra and B. X. Zhu and S. Zucchelli},
journal= {arXiv preprint arXiv:1402.0922},
year = {2014}
}
备注
8 pages, 5 figures, version 2 as published in Eur. Phys. J. C