Institution: | 1.College of Physics, Hebei Normal University, 050024, Shijiazhuang, Hebei, China ;2.School of Management Science and Engineering, Hebei University of Economics and Business, 050061, Shijiazhuang, Hebei, China ;3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China ;4.TIANFU Cosmic Ray Research Center, 610000, Chengdu, Sichuan, China ;5.Institute for Nuclear Research of the Russian Academy of Sciences, 117312, Moscow, Russia ;6.Science School, Tibet University, 850000, Lhasa, Tibet, China ;7.Key Laboratory of Comic Rays, Ministry of Education, Tibet University, 850000, Lhasa, Tibet, China ; |