1. CTBT Beijing National Data Centre and Beijing Radionuclide Laboratory, Beijing 100085, China
2. Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
3. School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
4. Key Laboratory of Particle and Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China