Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland;
Max-Planck-Institut for Nuclear Physics P.O.Box 103980 69029 Heidelberg Germany;
School of physics and technology Wuhan University Wuhan Hubei 430072 China;
State Key Laboratory of Particle Detection and Electronics China;
University of Science and Technology of China Hefei Anhui 230026 China;
School of Physical Science and Technology Southwest Jiaotong University Chengdu Sichuan 610031 China;
College of Physics Sichuan University Chengdu Sichuan 610065 China;
Key Laboratory of Particle Astrophyics & Experimental Physics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China;
TIANFU Cosmic Ray Research Center Chengdu Sichuan China;
School of Astronomy and Space Science Nanjing University Nanjing Jiangsu 210023 China;
Center for Astrophysics Guangzhou University Guangzhou Guangdong 510006 China;
Key Laboratory of Particle Astrophyics & Experimental Physics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China;
University of Chinese Academy of Sciences Beijing 100049 China;
TIANFU Cosmic Ray Research Center Chengdu Sichuan China;
Key Laboratory of Particle Astrophyics & Experimental Physics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China;
TIANFU Cosmic Ray Research Center Chengdu Sichuan China;
