1. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
2. SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
3. Nuclear Professional School, School of Engineering, The University of Tokyo, 2-22 Shirakata-shirane, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan
4. Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 4-7-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
5. Instruments Center for Physical Science, University of Science and Technology of China, Hefei, Anhui 230026, China