1. Pohang Accelerator Laboratory, Pohang, Republic of Korea
2. Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
3. Department of Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea
4. Department of Electrical Engineering, Kangwon National University, Chuncheon, Republic of Korea
5. Department of Electrical Engineering, Korea National University of Transportation, Chungju, Republic of Korea