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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRI - Cosmic Ray Indirect
Study on the muon lateral distribution based on the first stage of LHAASO-KM2A
G. Xin,* Y. Zhang, Y.L. Feng, S. Zhao, Y.Y. Guo, G. Xiao, C. Li, X. Zuo, L.Y. Wang, N. Cheng
*corresponding author
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Pre-published on: 2019 July 22
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The first stage of LHAASO-KM2A has been completed in Sichuan, China. KM2A is composed of electromagnetic particle detectors (ED) and muon detectors (MD), focusing on gamma ray astronomy above 30 TeV and cosmic ray physics in the “knee” region. The ED array in the first stage is installed into two clusters and the distance between the two clusters is around 230 meters. The MDs are distributed in one of the clusters. Each MD is covered with soil of 2.5 meters thick. We analyzed the lateral distribution of muons which are 140-300 meters away from Shower axis, and the primary cosmic ray energy is about 100TeV.
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