Neutron triple-axis spectrometers in the research reactor JRR-3

研究用原子炉JRR-3に設置された中性子三軸分光器

脇本 秀一  ; 金子 耕士   ; 久保田 正人 ; 長壁 豊隆  ; 下条 豊; 武田 全康  ; 山内 宏樹   

Wakimoto, Shuichi; Kaneko, Koji; Kubota, Masato; Osakabe, Toyotaka; Shimojo, Yutaka; Takeda, Masayasu; Yamauchi, Hiroki

In the research reactor JRR-3, three triple-axis spectrometers, TAS-1, TAS-2 and LTAS, are installed and operated by JAEA. These are dedicated for measurements of structure factors in an arbitral momentum-energy space for various materials. Each instrument has an characteristics: TAS-1 equips polarized neutron option, TAS-2 is dedicated for extreme sample environments such as high field and pressure, LTAS has fine energy resolution by using cold neutrons. We will review current status and future upgrades of these instruments.