1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
2. Department of Engineering Physics, Tsinghua University, Beijing 100084, China ; Chengdu 610213, China
3. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Beijing 100084, China ; Chengdu 610213, China
4. China Nuclear Power Engineering Co., Ltd., Beijing 100840, China
5. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China