论文标题
修订的Zeplin-III暗物质实验的性能参数
Revised performance parameters of the ZEPLIN-III dark matter experiment
论文作者
论文摘要
本说明介绍了适用于Zeplin-III暗物质实验第一科学运行的数据的修订后的检测参数；这些数据集是在2008年获得的，并于2011年重新宣讲。该运行显示了液体XENON的电子后坐力歧视，在10,000以下的10,000低于40 KEV核后坐力能量的水平上，在3.8 kV/cm的电场上；这仍然是迄今为止该媒介报告的最佳歧视。基于近年来发表的相关测量值，对电子和核后坐力的闪烁和电离响应的校准（在此线性映射到CO-57伽马射线相互作用）在此处转换为光学参数，这些光学参数更适合于将数据与ERERGISID液体Xenon响应模型相关联。提供了有关低能量时电子和核后坐力种群拟合的其他信息。本说明的目的是通过在高领域获得的有价值的数据来支持这些模型的进一步开发。
This note presents revised detector parameters applicable to data from the First Science Run of the ZEPLIN-III dark matter experiment; these datasets were acquired in 2008 and reanalised in 2011. This run demonstrated electron recoil discrimination in liquid xenon at the level of 1 part in 10,000 below 40 keV nuclear recoil energy, at an electric field of 3.8 kV/cm; this remains the best discrimination reported for this medium to date. Building on relevant measurements published in recent years, the calibration of the scintillation and ionisation responses for both electron and nuclear recoils, which had been mapped linearly to Co-57 gamma-ray interactions, is converted here into optical parameters which are better suited to relate the data to the emerging liquid xenon response models. Additional information is given on the fitting of the electron and nuclear recoil populations at low energy. The aim of this note is to support the further development of these models with valuable data acquired at high field.
