论文标题
使用线细胞3-D成像，聚类和电荷匹配的微型液体氩时间投影室中的中微子事件选择
Neutrino Event Selection in the MicroBooNE Liquid Argon Time Projection Chamber using Wire-Cell 3-D Imaging, Clustering, and Charge-Light Matching
论文作者
论文摘要
需要精确有效的事件重建，以实现液体氩时间投影室（LARTPC）的全部科学能力。依赖大量LARTPC的当前和未来中微子实验使人们需要新的想法和重建方法。近年来提出的电线细胞是用于LARTPCS的新型层析成像事件重建方法。电线3D成像方法在电荷，稀疏性，时间和几何信息上大写，以重建在模式识别之前电离电子的拓扑 - 敏锐的3D图像。第二种新颖的方法，即多到多的电荷匹配，然后将TPC电荷活性与检测到的闪烁光信号配对，从而实现了微生物检测器中宇宙射线μ子的强大排斥。闪烁信号的鲁棒处理和重建的3D图像的适当聚类对于此技术至关重要。在本文中，我们描述了这些技术的原理和算法及其在微酮实验中的成功应用。提出了对这些技术性能的定量评估。使用这些技术，通过降低了非光束辅助的宇宙射线哑光，可以实现95％的中微子充电事件的预选预选，并且至少重建了至少70％的完整性和80％的纯度，并且重建了约80％的中微子带电的事件。
An accurate and efficient event reconstruction is required to realize the full scientific capability of liquid argon time projection chambers (LArTPCs). The current and future neutrino experiments that rely on massive LArTPCs create a need for new ideas and reconstruction approaches. Wire-Cell, proposed in recent years, is a novel tomographic event reconstruction method for LArTPCs. The Wire-Cell 3D imaging approach capitalizes on charge, sparsity, time, and geometry information to reconstruct a topology-agnostic 3D image of the ionization electrons prior to pattern recognition. A second novel method, the many-to-many charge-light matching, then pairs the TPC charge activity to the detected scintillation light signal, thus enabling a powerful rejection of cosmic-ray muons in the MicroBooNE detector. A robust processing of the scintillation light signal and an appropriate clustering of the reconstructed 3D image are fundamental to this technique. In this paper, we describe the principles and algorithms of these techniques and their successful application in the MicroBooNE experiment. A quantitative evaluation of the performance of these techniques is presented. Using these techniques, a 95% efficient pre-selection of neutrino charged-current events is achieved with a 30-fold reduction of non-beam-coincident cosmic-ray muons, and about 80\% of the selected neutrino charged-current events are reconstructed with at least 70% completeness and 80% purity.
