Activities in high field laboratory for superconducting materials at Sendai

Since High Field Laboratory for Superconducting Materials HFLSM was establi shed at Tohoku University in 1981, hybrid magnets such as a 31 T-HM (31.1 T , 32 mm room temperature RT bore) and a 28 T-HM (28.1 T, 52 mm RT Bore) hav e been developed and utilized for shared use in Japan. HFLSM plays a drivin g role of basic and applied superconducting research using high magnetic fi elds in Japan. The Tohoku hybrid magnets are being operated so frequently f or 18 weeks a year, and have proved powerful in advanced research studies o f high-T-c high field oxide superconductors, conventional high field superc onductors and high field superconducting magnet technologies. Magnetism, op tical properties and other high field physical properties are also being in vestigated in fields up to 30 T. Further, HFLSM succeeded in realizing the world's first practical cryogenfree superconducting magnet CSM. Recently, a CSM achieved 15.1 T in a 52 mm RT bore. A CSM is conveniently utilized for research in chemistry, biology and crystal growth in high fields.