Flux variations of cosmic ray air showers detected by LHAASO-KM2A during a thunderstorm on June 10, 2021
Flux variations of cosmic ray air showers detected by LHAASO-KM2A during a thunderstorm on June 10, 2021
复制标题
2021年6月10日雷暴期间LHAASO-KM2A探测到的宇宙射线空气簇射通量变化
DOI：
10.1088/1674-1137/ac9371
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发表时间：
2022
影响因子：
3.6
通讯作者：
X. Zuo
中科院分区：
文献类型：
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作者：
L. C. F. Aharonian;Q. An;Axikegu;L. Bai;Y. Bai;Y. Bao;D. Bastieri;X. Bi;Y. Bi;J. Cai;Z. Cao;Z. Cao;J. Chang;J. Chang;E. Chen;Liang Chen;Long Chen;M. Chen;M. Chen;S. Chen;S. Z. Chen;T. Chen;Xinfa Chen;Y. Chen;H. L. Cheng;N. Cheng;Y. Cheng;S. Cui;X. Cui;Y. Cui;B. Dai;H. Dai;Z. Dai;Danzengluobu;D. Volpe;K. Duan;J. Fan;Y. Fan;Z. Fan;J. Fang;K. Fang;C. Feng;L. Feng;S. Feng;X. Feng;Y. Feng;B. Gao;C. Gao;L. Gao;Q. Gao;W. Gao;W. Gao;M. Ge;L. Geng;G. Gong;Q. Gou;M. Gu;F. Gu;J. G. Guo;X. Guo;Y. Guo;Y. Guo;Y. Han;H. He;Haoyu He;S. He;X. He;Y. He;M. Heller;Y. Hor;C. Hou;X. Hou;H. Hu;Q. Hu;S. Hu;S. Hu;X. Hu;D. Huang;W. Huang;X. Huang;X. Y. Huang;Y. Huang;Z. Huang;X. Ji;H. Jia;K. Jia;K. Jiang;Z. Jiang;M. Jin;M. Kang;T. Ke;D. Kuleshov;B. Li;Cheng Li;Cong Li;F. Li;H. B. Li;H. C. Li;H. Li;J. Li;Jian Li;Jie Li;K. Li;W. Li;X. Li;Xin Li;Y. Li;Zhe Li;Zhuo Li;E.W.Liang;Y. Liang;S. Lin;B. Liu;C. Liu;D. Liu;H. Liu;H. Liu;J. Liu;J. Liu;J. Liu;J. Liu;M. Liu;R. Liu;S. M. Liu;W. Liu;Y. Liu;Y. Liu;W. Long;R. Lu;Q. Luo;H. Lv;B. Ma;Li Ma;X. Ma;J. Mao;Andleeb Masood;Z. Min;W. Mitthumsiri;Y. Nan;Z. Ou;B. Pang;P. Pattarakijwanich;Z. Pei;M. Qi;Y. Qi;B. Qiao;J. Qin;D. Ruffolo;A. S'aiz;C. Shao;L. Shao;O. Shchegolev;X. Sheng;J. Shi;H. Song;Y. Stenkin;V. Stepanov;Y. Su;Q. Sun;X. Sun;Z. Sun;P. Tam;Z. Tang;W. Tian;B. Wang;C. Wang;H. Wang;H. Wang;J. C. Wang;J. S. Wang;L. Wang;L. Y. Wang;R. Wang;R. Wang;W. Wang;X. Wang;X. Y. Wang;Y. Wang;Y. D. Wang;Y. J. Wang;Y. Wang;Z. H. Wang;Zhen Wang;Z. Wang;D. Wei;J. Wei;Y. Wei;T. Wen;C. Y. Wu;H. Wu;S. Wu;Xin Wu;W. Y.;S. Xi;J. Xia;J. Xia;G. Xiang;D. Xiao;G. Xiao;G. Xin;Y. Xin;Yangang Xing;Z. Xiong;D. Xu;R. Xu;L. Xue;D. Yan;J. Yan;C. Yang;F. Yang;H. W. Yang;J. Yang;L. L. Yang;M. Yang;R. Yang;S. Yang;Y. Yao;Z. Yao;Y. Ye;L. Yin;N. Yin;X. You;Z. You;Y. Yu;Q. Yuan;H. Yue;H. Zeng;T. Zeng;W. Zeng;Z. Zeng;M. Zha;X. Zhai;B. Zhang;F. Zhang;H. Zhang;H. Zhang;J. Zhang;L. X. Zhang;Li Zhang;Lun Zhang;P. Zhang;P. Zhang;R. Zhang;S. B. Zhang;S. Zhang;S. Zhang;X. Zhang;X. Zhang;Y. Zhang;Y. L. Zhang;Yi. Zhang;Yong Zhang;B. Zhao;J. Zhao;L. Zhao;L. Zhao;S. Zhao;F. Zheng;Y. Zheng;B. Zhou;H. Zhou;J. Zhou;P. Zhou;R. Zhou;X. Zhou;C. Zhu;F. Zhu;H. Zhu;K. Zhu;X. Zuo
大型高空空气簇射观测站（LHAASO）拥有三个子阵：KM2A、WCDA 和 WFCTA。通过分析2021年6月10日雷暴期间的KM2A数据，研究了宇宙线空气流星雨的通量变化。满足触发条件的宇宙线空气流星雨事件数量在大气电场中显着增加，最大增幅达到20%。发现触发率的变化（增加或减少）强烈依赖于主天顶角。二次粒子通量显着增加，其趋势与阵雨事件类似。为了更好地理解观察到的行为，使用 CORSIKA 和 G4KM2A（基于 GEANT4 的代码）进行了蒙特卡罗模拟。我们发现实验数据（在饱和负场中）与模拟结果非常吻合，假设观测平面以上大气中存在厚度为 1500 m 的 -700 V/cm 均匀电场。由于大气电场的加速/减速，能量高于探测器阈值的二次粒子数量发生改变，导致阵雨探测率发生变化。
The Large High Altitude Air Shower Observatory (LHAASO) has three sub-arrays, KM2A, WCDA, and WFCTA. The flux variations of cosmic ray air showers were studied by analyzing the KM2A data during a thunderstorm on June 10, 2021. The number of shower events that meet the trigger conditions increases significantly in atmospheric electric fields, with a maximum fractional increase of 20%. The variations in trigger rates (increases or decreases) were found to be strongly dependent on the primary zenith angle. The flux of secondary particles increased significantly, following a trend similar to that of shower events. To better understand the observed behavior, Monte Carlo simulations were performed with CORSIKA and G4KM2A (a code based on GEANT4). We found that the experimental data (in saturated negative fields) were in good agreement with the simulations, assuming the presence of a uniform electric field of -700 V/cm with a thickness of 1500 m in the atmosphere above the observation level. Due to the acceleration/deceleration by the atmospheric electric field, the number of secondary particles with energy above the detector threshold was modified, resulting in the changes in shower detection rate.