〇(M2)Kohei Yamamoto^1,2, Kou Takubo¹, Yasuyuki Hirata^1,2, Yuichi Yokoyama^1,2, Susumu Yamamoto^1,2, Takuo Ohkochi³, Toyohiko Kinoshita³, Takeshi Seki⁴, Koki Takanashi⁴, Shik Shin¹, Iwao Matsuda^1,2, Hiroki Wadati^1,2 (1.ISSP, Univ. of Tokyo, 2.Dept. of Phys, Univ. of Tokyo, 3.JASRI, 4.IMR, Tohoku Univ.)