1. Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
2. Key Laboratory of Applied Superconductivity Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
3. Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
4. State Grid Zhejiang Electric Power Co. Ltd., Hangzhou, China