论文标题
羊驼实验：南部天空中第一个子PEV伽马射线观察的项目
The ALPACA experiment: The project of the first sub-PeV gamma-ray observation in the southern sky
论文作者
论文摘要
羊驼实验是一个旨在在南半球首次观察子-PEV伽玛射线的项目。羊驼的主要目的是通过观察PEV宇宙射线与星际介质之间的相互作用中产生的子PEV pion-decay-decay-decay-decay-decay-decay-decay-decay伽玛射线来鉴定pevatron，即银河PEV宇宙射线的加速器。这个新的空气淋浴实验位于玻利维亚山山山中部海拔4,740 m的高度。空气淋浴阵列由401个闪烁柜台组成，覆盖83,000 m $ $^2 $表面积。此外，安装了一个面积为3,700 m $^2 $面积的水 - 切伦科夫型元型探测器阵列，以区分背景宇宙射线的伽玛射线。原型阵列Alpaquita将在2022年开始数据，并将在2024年扩展到羊驼。我们报告了羊驼的一般介绍，项目的进度以及对Sub-Pev Gamma射线的敏感性。
The ALPACA experiment is a project aiming to observe sub-PeV gamma rays for the first time in the southern hemisphere. The main goal of ALPACA is to identify PeVatrons, the accelerators of Galactic PeV cosmic rays, by observing sub-PeV pion-decay gamma rays generated in interactions between PeV cosmic rays and the interstellar medium. This new air shower experiment is located at an altitude of 4,740 m above sea level in the middle of Mt. Chakartaya in Bolivia. The air shower array consists of 401 scintillation counters covering an 83,000 m$^2$ surface area. In addition, a water-Cherenkov-type muon detector array with an area of 3,700 m$^2$ is installed to discriminate gamma rays from background cosmic rays. The prototype array ALPAQUITA will start data taking in 2022 and will extend to ALPACA in 2024. We report on a general introduction to ALPACA, the progress of the project, and the sensitivity to sub-PeV gamma rays.
