Tetsuo Takashima

Tetsuo Takashima (高嶋 哲夫 Takashima Tetsuo, born July 7, 1949) is a popular contemporary Japanese author active in a number of genres that include science fiction, mystery fiction, historical fiction, social commentary, and juvenile fiction.

The title of the article was : Drive characteristics of a fast movable limiter in the JT-60 tokamak T.Takashima, M.Ohta, and M.Shimizu Division of Large Tokamak Development, Tokai Establishment, Japan Atomic Energy Research Institute, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan. (received 26 August 1977; in final form, 17 October 1977) A Pair of fast-scting movable limiters are to be installed in the vacuum chamber of the JT-60 tokamak being designed at JAERI.Their purpose is to supperss skin current in the plasma column.They should traval across are vacuum chamnber over a stroke of about 1 m in 0.1 s during the built-up phase of the plasma current. Each movable limiter system consists of the drive system, a vacuum seal, a bearing usable at hgh temperature in a vacuum, and a molybdenum rail limiter head. For the drive a hydraulic mechanism is used with servovalves to control the oil flow. To develop satisfactory movable limiters for JT-60, the full-scale model was constructed and tested. Overall tets with the model showed high reliability, reproducibility, controllability, and safety of the movable limiter. The drive pattern measured is in good agreement with that simulated. The movable limiters should prevent the skin effect of plasma current in the current rising phase and also provide information on particle diffusion during the flat-top phase of plasma current.

...
Wikipedia