Simulation Study on Scaler Mode in LHAASO-KM2A
文献类型：会议论文
| 作者 | Huang, Zhicheng1; Huang, Daihui1; Zhou, Xunxiu1; Zhao, Jing2; He, Huihai2; Chen, Songzhan2; Ma, Xinhua2; Liu, Dong3; Axi, Kegu1; Zhao, Bing1 |
| 出版日期 | 2022-03-18 |
| 会议日期 | 2021-07-12 |
| 会议地点 | Virtual, Berlin, Germany |
| 关键词 | Scaler mode Shower mode LHAASO KM2A Monte Carlo simulations Cosmic rays |
| 卷号 | 395 |
| DOI | 10.22323/1.395.0365 |
| 英文摘要 | LHAASO, located at Daocheng in Sichuan province of China with an altitude up to 4410 m above the sea level, takes the function of hybrid technology to detect cosmic rays. As the major array of LHAASO, KM2A is composed of 5195 electromagnetic particle detectors (EDs) and 1188 muon detectors (MDs). In the ground-based experiments, there are two common independent data acquisition systems, corresponding to the scaler and shower operation modes. In order to learn more about the scaler mode in LHAASO-KM2A, we adopt the CORSIKA to study the shower development and employ the G4KM2A (based on Geant4) to simulate the detector responses. For one cluster (composed of 64 EDs) in the array of KM2A-ED, the event rates of showers having a number of fired EDs ≥ 1, 2, 3 and 4 (in a time coincidence of 100 ns) are recorded. The average rates of the four multiplicities are ∼ 88 kHz, ∼ 1.4 kHz, ∼ 210 Hz and ∼ 110 Hz, respectively. For the array of KM2A-MD, there are 16 MDs in one cluster. The average rates with multiplicities ≥ 1 and 2 are ∼ 84 kHz and ∼ 890 Hz, respectively. The corresponding primary energies are also given. According to our simulations, the energy threshold of the scaler mode can be lowered to ∼ 100 GeV. At the same time, the energy threshold of LHAASO-KM2A in shower mode is presented for comparison. The simulation results in this work are beneficial for the online trigger with scaler mode, and also be useful in understanding the experiment results in LHAASO-KM2A. © Copyright owned by the author(s). |
| 产权排序 | 第32完成单位 |
| 资助机构 | National Natural Science Foundation of China[11475141,12047576,U2031101] |
| 会议录 | Proceedings of Science
 |
| 会议录出版者 | Sissa Medialab Srl |
| 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 ; 核科学技术 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/25725]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, 610031, China; 2.Institute of High Energy Physics, CAS, Beijing, 100049, China; 3.Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China; 4.Key Laboratory of Particle Astrophyics, Experimental Physics Division, Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 5.University of Chinese Academy of Sciences, Beijing, 100049, China; 6.TIANFU Cosmic Ray Research Center, Sichuan, Chengdu, China; 7.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2, Dublin, Ireland; 8.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany; 9.State Key Laboratory of Particle Detection and Electronics, China; 10.University of Science and Technology of China, Anhui, Hefei, 230026, China; |
| 推荐引用方式 GB/T 7714 | Huang, Zhicheng,Huang, Daihui,Zhou, Xunxiu,et al. Simulation Study on Scaler Mode in LHAASO-KM2A[C]. 见:. Virtual, Berlin, Germany. 2021-07-12. |
入库方式： OAI收割
来源：云南天文台
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