維持管理（モニタリング）

[I-99] Performance test at low temperature of the Expansion Gap Observation System

〇Sunao Iwabuchi¹, Yasunori Miyamori², Tomohisa Takehara¹, Takehiko Saito², Yoichi Hinata³, Toshiyuki Oshima² (1.Koken Engineering, 2.KITAMI Institute of Technology, 3.Nihon Kasetsu)

Keywords:expansion gap, observation system, low-temperature experiment, temperature difference