基于多单元波长位移光学模块的液体闪烁体探测器作为SHIP周围背景标记器原型的性能
Performance of a first multi-cell WOM-based liquid scintillator detector as prototype for the SHiP Surrounding Background Tagger
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中文总结 AI 辅助
介绍SHIP实验中用于包围衰变体积的SBT探测器，其基于液体闪烁体和WOM管。报告了2×2单元原型探测器在CERN PS T9测试束设施中对5GeVμ子的性能研究，包括探测器响应及对最小电离粒子的时空分辨率。
中文摘要 AI 辅助
寻找隐藏粒子（SHiP）实验于2024年获欧洲核子研究组织批准。在质子束卸料设施（BDF）中产生的弱相互作用粒子将在该实验50米长的衰变体积中衰变，这需要被一个密封的否决探测器包围：周围背景标记器（SBT）。其技术依赖于由线性烷基苯和2,5-二苯基恶唑组成的液体闪烁体作为有源探测器材料，以及收集初级闪烁光子的波长位移光学模块（WOM）管。液体闪烁体体积被分割成典型尺寸为120厘米×80厘米×20厘米的大单元，每个单元配备两个WOM。本文报告了一个全尺寸2×2单元原型探测器的性能，该探测器在欧洲核子研究组织PS T9测试束设施中暴露于5GeV的μ子，以研究探测器对穿过多个探测器单元的最小电离粒子的响应及其时间和空间分辨率。
英文摘要
The Search for Hidden Particles (SHiP) Experiment was approved by CERN in 2024. Feebly-interacting particles that are produced in a proton Beam Dump Facility (BDF) will decay in the 50m-long Decay Volume of the experiment, which needs to be enveloped by a hermetic veto detector: The Surrounding Background Tagger (SBT). Its technology relies on liquid scintillator, composed of linear alkylbenzene and 2,5-diphenyloxazole, as active detector material and Wavelength-shifting Optical Module (WOM) tubes collecting the primary scintillation photons. The liquid scintillator volume is segmented in large cells of typically 120cm x 80cm x 20cm that are equipped with two WOMs each. Here, we report on the performance of a full-scale 2x2-cell prototype detector which was exposed to 5GeV muons at the CERN PS T9 test beam facility to study the detector response and its time and spatial resolution for minimum ionising particles crossing multiple detector cells.
