Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)
Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)
复制标题
低本底聚萘二甲酸乙二醇酯闪烁结构部件的生产和验证
DOI：
10.1088/1748-0221/17/01/p01010
复制
发表时间：
2022
影响因子：
1.3
通讯作者：
Majorovits, B.
中科院分区：
文献类型：
--
作者：
Efremenko, Y.;Febbraro, M.;Fischer, F.;Guitart Corominas, M.;Gusev, K.;Hackett, B.;Hayward, C.;Hodák, R.;Krause, P.;Majorovits, B.
聚萘二甲酸乙二醇酯(PEN)是一种工业聚合物塑料，是一种低本底、透明、闪烁、波长移动的结构材料。PEN在蓝色区域闪烁，在室温和低温下都具有优异的机械性能。因此，在研究无中微子双β衰变或暗物质反冲等罕见事件的实验中，它是活性结构组件的理想候选者。这种光学活性结构提高了背景事件的识别和拒绝效率，从而提高了实验的灵敏度。本文报道了放射性照相和透明笔板的生产，这些结构可用于安装在低温液体(LAr，LN)中工作的Ge探测器。因此，在Legend-200实验中，作为第一个应用，笔架将被用于安装Ge探测器。报道了从原料清洗到PEN活性成分在最终操作条件下测试的全过程。
Poly Ethylene Naphthalate (PEN) is an industrial polymer plastic which is investigated as a low background, transparent, scintillating and wavelength shifting structural material. PEN scintillates in the blue region and has excellent mechanical properties both at room and cryogenic temperatures. Thus, it is an ideal candidate for active structural components in experiments for the search of rare events like neutrinoless double-beta decay or dark matter recoils. Such optically active structures improve the identification and rejection efficiency of backgrounds events, like this improving the sensitivity of experiments. This paper reports on the production of radiopure and transparent PEN plates These structures can be used to mount germanium detectors operating in cryogenic liquids (LAr, LN). Thus, as first application PEN holders will be used to mount the Ge detectors in the Legend-200 experiment. The whole process from cleaning the raw material to testing the PEN active components under final operational conditions is reported.