Meteorological effects on the counting rates with KM2A in scaler mode
文献类型：会议论文
| 作者 | Cao, Zhen35,36,37; Aharonian, F.32,33,34,35; Bai, Y. X.35,37; Bao, Y. W.31; Bastieri, D.30; Bi, X. J.35,36,37; Bi, Y. J.35,37; Bian, W.31; Bukevich, A. V.29; Cai, C. M.28 |
| 出版日期 | 2025-12-30 |
| 会议日期 | 2025-07-15 |
| 会议地点 | Geneva, Switzerland |
| 卷号 | 501 |
| DOI | 10.22323/1.501.0280 |
| 英文摘要 | The Large High Altitude Air Shower Observatory (LHAASO) consists of three sub-arrays: KM2A, WCDA and WFCTA. The KM2A contains 5216 electromagnetic particle detectors (EDs) and 1188 muon detectors (MDs). There are two common independent data acquisition systems, corresponding to the shower and scaler operation modes. In scaler mode, the KM2AED array is divided into 61 clusters. One cluster consists of 64 EDs (8 EDs × 8 EDs). For each cluster, the event rates of showers having a number of fired EDs within a time coincidence of 100 ns (particle multiplicities m) = 1, 2, 3, 4.. are recorded every 0.1 s. The scaler mode began acquiring data on June 21, 2023. In this study, we analyze the scaler mode data to study the meteorological effects on the counting rates with different multiplicities. Over long time periods, the distributions for all Ci (means the counting rate for m = i) are influenced by meteorological parameters, such as the atmospheric pressure (P) and temperature (T). The counting rates decrease with increasing P and T. The correlation coefficients between the counting rates and the meteorological parameters are studied in this work. After correcting for meteorological effects, the counting rates become stable over long time periods, with C1 following a Gaussian distribution and C2, C3 and C4 following Poisson distributions. © Copyright owned by the author(s) |
| 产权排序 | 第27完成单位 |
| 资助机构 | National Natural Science Foundation of China[12375102, U2031101] |
| 会议录 | Proceedings of Science
 |
| 文献子类 | Conference article (CA) - |
| 学科主题 | 物理学 ; 高能物理学 ; 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| 资助项目 | National Natural Science Foundation of China[12375102];National Natural Science Foundation of China[U2031101] |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28942]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.APC, Université Paris Cité, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, 119, Paris, 75205, France; 2.School of Physics, Huazhong University of Science and Technology, Hubei, Wuhan, 430074, China 3.National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China; 4.Moscow Institute of Physics and Technology, Moscow, 141700, Russia; 5.School of Physics and Technology, Nanjing Normal University, Jiangsu, Nanjing, 210023, China; 6.Department of Physics, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; 7.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Guangxi, Nanning, 530004, China; 8.School of Physics, Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, China; 9.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science, Institute of Space Science and Technology, Nanchang University, Jiangxi, Nanchang, 330031, China; 10.College of Physics, Sichuan University, Sichuan, Chengdu, 610065, China; |
| 推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F.,Bai, Y. X.,et al. Meteorological effects on the counting rates with KM2A in scaler mode[C]. 见:. Geneva, Switzerland. 2025-07-15. |
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来源：云南天文台
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