A modular liquid argon (LAr) Time Projection Chamber (TPC) with pixelated charge readout is considered as a part of the near-detector for the Deep Underground Neutrino Experiment (DUNE) [1]. Such a TPC is being developed by the ArgonCube collaboration [2]. To provide a trigger for the data acquisition (DAQ) of a neutrino event the LAr scintillation light detection is proposed. The light is a vacuum ultraviolet (UV) with 128 nm wavelength, thus, it is a challenge to register it. The main requirements imposed on the light detection system are a good performance at cryogenic temperatures, non-conductive materials, compact dimensions, and a detection efficiency at a level of percent. A Light Collection Module (LCM) as a candidate for the system has been developed at Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The LCM is based on the wavelength-shifting (WLS) fibers that are coated with Tetraphenyl Butadiene (TPB) and read out by silico...

中文翻译：

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液态氩时间投影室（LArTPC）的光收集模块的开发

带有像素化电荷读数的模块化液态氩（LAr）时间投影室（TPC）被认为是深地下中微子实验（DUNE）[1]的近探测器的一部分。这样的TPC由ArgonCube合作开发[2]。为了为中微子事件的数据采集（DAQ）提供触发条件，提出了LAr闪烁光检测技术。该光是波长为128 nm的真空紫外线（UV），因此，对其进行配准是一个挑战。对光检测系统的主要要求是在低温温度下具有良好的性能，非导电材料，紧凑的尺寸以及百分之一水平的检测效率。俄罗斯杜布纳联合核研究所（JINR）已开发出一种光收集模块（LCM）作为该系统的候选产品。