Abstract
Use of a low radioactivity fusion device has been proposed for a near future D-T experiment in an R-tokamak design by the Institute of Plasma Physics, Nagoya University, in order to avoid the difficulties of repair and maintenance by remote handling. The radioactivity in the aluminum alloy design is smaller by a factor of 20–70 than that in the Phase 1 design (an initial design for this project) where a stainless steel vacuum vessel is employed. In this paper the mechanical, thermal and electric properties are compared to those of the stainless steel vacuum vessel. The electromagnetic performances are analyzed, and stress and buckling analysis is performed in both designs. The problems and advantages of the aluminum alloy vacuum vessel are shown in this study. In the results, the aluminum vacuum vessel is feasible as the component for the low radioactivity fusion device.
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