*Nozomi Takahashi¹, Sho Shinozaki², Yuri Shinohara³, Tomonari Inamura⁴, Hiroyuki Kawata⁵ (1. Tokyo Tech., 2. Tokyo Tech., 3. Tokyo Tech., 4. Tokyo Tech., 5. Nippon Steel)

*Yuri Shinohara¹, Yuma Sahashi², Tomonari Inamura³, Yasuaki Tanaka⁴ (1. Tokyo Tech., 2. Tokyo Tech., 3. Tokyo Tech., 4. Nippon Steel)

*Kazuki Tamura¹, Masahide Natori², Nobuo Nakada³ (1. NSK, 2. NSK, 3. Tokyo Tech)

*Junya INOUE^1,2, Shuang Gong³, Meng Zhang¹ (1. Univ. Tokyo, IIS, 2. Univ. Tokyo, Eng., 3. Univ. Tokyo, Eng.)

*Takehiro TAMAOKA¹, Satoshi Okamoto², Yasukazu Murakami¹ (1. Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, 2. The Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University)