The IceCube-Gen2 Neutrino Observatory will feature an in-ice optical array, a larger in-ice radio detector array, and a surface cosmic-ray air-shower array. The surface array will consist of stations based on the experience from the planned IceTop enhancement, each station having four pairs of scintillator panels, three radio antennas and a central hub hosting electronics for data readout and time digitization. In the currently proposed implementation, a surface station will be located in the proximity of each of the 120 in-ice optical strings. Together with the in-ice optical array, the designed array will help to test hadronic interaction models and will extend IceTop's measurement of the energy spectrum and mass composition beyond 10 PeV. The array will also serve as a background veto for down-going candidate neutrino events. In addition, the surface stations will be fundamental to characterize the atmospheric component of the in-ice spectrum (i.e. atmospheric neutrinos and muons) and may serve as a cross calibration tool for the in-ice radio array. In this presentation the physics motivations for the surface array, and the proposed implementation plan will be reviewed.

IceCube-Gen2 中微子天文台将配备一个冰内光学阵列、一个更大的冰内射电探测器阵列和一个表面宇宙射线空气淋浴阵列。表面阵列将由基于计划中的 IceTop 增强经验的站点组成，每个站点有四对闪烁体面板、三个无线电天线和一个中央集线器，其中包含用于数据读出和时间数字化的电子设备。在当前提议的实施中，地面站将位于 120 个冰内光学串中的每一个附近。与冰内光学阵列一起，设计的阵列将有助于测试强子相互作用模型，并将 IceTop 的能谱和质量成分测量扩展到 10 PeV 以上。该阵列还将作为对下行候选中微子事件的背景否决权。此外，地面站将是表征冰内频谱的大气成分（即大气中微子和μ子）的基础，并可作为冰内无线电阵列的交叉校准工具。在本次演讲中，将回顾表面阵列的物理动机，以及提议的实施计划。