arXiv:2605.28296cs.LGnucl-ex2026-05

用深度学习区分碳-碳反应事件,准确率达97%。

Machine Learning methods for event classification and vertex reconstruction of the 12C + 12C reaction with the MATE-TPC

论文配图:Machine Learning methods for event classification and vertex reconstruction of the 12C + 12C reaction with the MATE-TPC
图 1 · 摘自论文原文
  • 用ResNet和VGG等模型分析电荷轨迹,自动分类反应事件。
  • 模拟数据分类准确率97%,实验数据达90%,优于传统方法。
  • 可识别误判事件,适合核物理复杂数据处理研究者。

在现代核物理实验中,利用主动靶时间投影室(TPC)研究12C + 12C融合反应时,识别感兴趣事件极具挑战。本文采用机器学习方法分析名为MATE的多功能主动靶时间投影室采集的12C + 12C反应数据。具体应用了残差网络(ResNet-50、ResNet-34、ResNet-18)和视觉几何组(VGG-19)模型,对弹性散射与融合反应事件进行分类,四类模型表现相近,模拟数据准确率约97%,实验数据达90%。此外,这些模型成功识别出传统方法误判的部分事件。同时,针对不同融合反应通道的分类准确率在模拟数据上约为95%。还构建了一个卷积神经网络(CNN)模型用于重建反应顶点,提供了一种新的顶点重构策略。结果表明,机器学习可有效实现多通道反应事件分类与顶点重构,为未来复杂核反应数据分析奠定基础。

原文摘要 · Abstract (English)

In modern nuclear physics experiments, identifying events of interest is challenging for nuclear reaction studies with the active target Time Projection Chamber (TPC). In this work, machine learning techniques are employed to analyze the complex data of the 12C + 12C fusion reaction from a TPC named MATE (multi-purpose active-target time projection chamber for nuclear experiments). Specifically, we successfully applied Residual Neural Network (ResNet-50, ResNet-34 and ResNet-18) and Visual Geometry Group (VGG-19) to classify elastic scattering and fusion reaction events from the 12C + 12C reaction. The classification results of the four models are nearly identical, with accuracies of approximately 97% for the simulated data and 90% for the experimental data. Moreover, these approaches successfully identify some events that are misclassified by traditional methods. These models are also applied to classify events from different fusion reaction channels, with classification accuracies of approximately 95% on simulated data. In addition, a Convolutional Neural Network (CNN) model is developed to reconstruct the reaction vertex, providing an alternative strategy for vertex reconstruction. These results indicate that machine learning techniques can effectively classify reaction events from different channels and reconstruct the reaction vertex, thereby paving the way for future analyses of complex nuclear reaction data.

核物理深度学习事件分类顶点重建

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