Simulation study on cosmic ray shower rate variations with LHAASO-KM2A during thunderstorms
文献类型：会议论文
| 作者 | Yang, Ci35; Zhou, Xunxiu35; Chen, Xuejian35; Huang, Daihui35; Cao, Zhen32,33,34; Aharonian, F.30,31; An, Q.28,29; Axikegu27; Bai, Y. X.32,34; Bao, Y. W.26 |
| 出版日期 | 2024-09-27 |
| 会议日期 | 2023-07-26 |
| 会议地点 | Nagoya, Japan |
| 卷号 | 444 |
| DOI | 10.22323/1.444.0190 |
| 英文摘要 | The Large High Altitude Air Shower Observatory (LHAASO) has three sub-arrays, KM2A, WCDA, and WFCTA. As the major array of LHAASO, KM2A has been operating stably in shower mode. To study the near-earth atmospheric electric field (AEF) effect on the trigger event rate during thunderstorms, Monte Carlo simulations are performed with CORSIKA and G4KM2A. According to the simulations, the shower rate variations are found to be strongly dependent on the strength and polarity of the AEF. The shower rates increase with the field intensity. In positive AEF (defined as the direction pointing towards the ground), the increased amplitude is less than that in negative AEF. With the same field strength 1000 V/cm, the value exceeds 12% in a negative field, and merely is up to 6% in the positive one. The dependence of the trigger rate variation on the thickness of the AEF layer is also simulated. The shower event rate increases dramatically at small thickness, and then the trend of variation slows down with the AEF layer thickness. This indicates that the AEF with larger layer thickness has more deflection effects on the development of an extensive air shower. The shower rate variations are also found to be dependent on the primary zenith angle. Our simulation results could be useful in understanding the variation of trigger rate detected by LHAASO-KM2A during thunderstorms. © Copyright owned by the author(s) under the terms of the Creative Commons. |
| 产权排序 | 第27完成单位 |
| 资助机构 | National Natural Science Foundation of China[U2031101] ; National Key Research and Development Program of China[2018YFA0404201] |
| 会议录 | Proceedings of Science
 |
| 文献子类 | Conference article (CA) |
| 学科主题 | 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[U2031101];National Key Research and Development Program of China[2018YFA0404201] |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27925]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519000, China; 2.National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China 3.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; 4.Moscow Institute of Physics and Technology, Moscow, 141700, Russia; 5.Department of Physics, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; 6.School of Physical Science and Technology, Guangxi University, Guangxi, Nanning, 530004, China; 7.School of Physics, Peking University, Beijing, 100871, China; 8.Institute for Nuclear Research of Russian Academy of Sciences, Moscow, 117312, Russia; 9.College of Physics, Sichuan University, Sichuan, Chengdu, 610065, China; 10.Yunnan Observatories, Chinese Academy of Sciences, Yunnan, Kunming, 650216, China; |
| 推荐引用方式 GB/T 7714 | Yang, Ci,Zhou, Xunxiu,Chen, Xuejian,et al. Simulation study on cosmic ray shower rate variations with LHAASO-KM2A during thunderstorms[C]. 见:. Nagoya, Japan. 2023-07-26. |
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来源：云南天文台
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