论文标题
Legend-200实验的低背景笔结构组件的光学特性
Optical properties of low background PEN structural components for the LEGEND-200 experiment
论文作者
论文摘要
在低背景物理实验中，聚乙烯萘盐（PEN）塑料闪烁体已被确定为潜在的自veto veto veto结构材料。使用注入压缩成型技术从笔中生产了闪烁的组件。这些低背钢笔组件将用作活跃的持有者，以将锗探测器安装在\ legend-$ 200 $中微子双β衰减实验中。在本文中，我们介绍了这些笔组件的光学特性的测量。因此，报道了发射光谱，时间常数，衰减和散装吸收长度以及光输出和光产率。另外，已经表征了这些笔组件的表面，并提出了表面粗糙度的估计。此外，已经测量并报告了最终\ legend $ 200 $检测器持有人的光输出。这些测量值用于估计这些持有人的自我veto效率。
Polyethylene Naphthalate (PEN) plastic scintillator has been identified as potential self-vetoing structural material in low-background physics experiments. Scintillating components have been produced radio-pure from PEN using injection compression molding technology. These low-background PEN components will be used as active holders to mount the Germanium detectors in the \legend-$200$ neutrinoless double beta decay experiment. In this paper we present the measurement of the optical properties of these PEN components. Thus, the emission spectrum, time constant, attenuation and bulk absorption length as well as light output and light yield are reported. In addition, the surface of these PEN components has been characterized and an estimation of the surface roughness is presented. Moreover, the light output of the final \legend-$200$ detector holders has been measured and is reported. These measurements were used to estimate the self-vetoing efficiency of these holders.
