用于π介子静止衰变中微子源通量归一化的D $_{2}$ O探测器
A D$_{2}$O detector for flux normalization of a pion decay-at-rest neutrino source
摘要：
我们报告的技术设计和预期性能的592公斤重水切伦科夫探测器测量的绝对中微子流的π衰变静止中微子源在Sputter-Neutron源（SNS）在橡树岭国家实验室（ORNL）。该探测器将位于距离SNS目标约20米处，并将在2年内测量中微子通量，其统计不确定性优于5%。这个重水探测器将作为双模块探测器系统的第一个模块，最终在SNS的第一个目标站和计划的第二个目标站测量中微子通量，达到2-3%。该探测器将显著降低SNS中微子截面测量的主要系统不确定性，增加搜索新物理的灵敏度。
英文摘要：
We report on the technical design and expected performance of a 592 kg heavy-water-Cherenkov detector to measure the absolute neutrino flux from the pion-decay-at-rest neutrino source at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The detector will be located roughly 20 m from the SNS target and will measure the neutrino flux with better than 5% statistical uncertainty in 2 years. This heavy-water detector will serve as the first module of a two-module detector system to ultimately measure the neutrino flux to 2-3% at both the First Target Station and the planned Second Target Station of the SNS. This detector will significantly reduce a dominant systematic uncertainty for neutrino cross-section measurements at the SNS, increasing the sensitivity of searches for new physics.
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