Abstract
The reactor-grade plasma in Japan, which may be represented by JT-60, is discussed by the Institute of Plasma Physics and the Dept. of Electrical Engineering. A reacting-plasma experiment, the so-called R-Project, is also being planned. In designing and installing diagnostic instruments for reactor-grade plasmas, emphasis must be put on reliability so that they may be used as monitors or sensors for feedback control of core plasmas in a violent environment, in addition to physics-oriented diagnostics, where various plasma parameters are to be measured to identify phenomena occurring in plasmas. The diagnostic scheme of JT-60 is discussed, as well as far-infrared diagnostics, recent achievements in diagnostics-oriented research subjects, and diagnostics of fusion products. A schematic diagram of the alpha-particle diagnostic system by the charge-exchange method in the R-tokamak is shown.
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