@misc{oai:repo.qst.go.jp:00080838,
 author = {Yamamoto, Satoshi and Itashiki, Yutaro and Tsuru, Daigo and Takechi, Manabu and Matsunaga, Go and Nakamura, Shigetoshi and Hayashi, Takao and Isayama, Akihiko and Satoshi, Yamamoto and Yutaro, Itashiki and Daigo, Tsuru and Manabu, Takechi and Go, Matsunaga and Shigetoshi, Nakamura and Takao, Hayashi and Akihiko, Isayama},
 month = {Sep},
 note = {The stabilizing plate of JT-60SA which is the largest superconducting tokamak, has been designed based on an electromagnetic and structural analysis. The stabilizing plate plays a role of both a passive stabilizer of magnetohydrodynamics (MHD) instabilities such as vertical displacement event (VDE) and resistive wall mode, and the first wall at low field side in combination with carbon tiles. The stabilizing plate is made of SS316L with low cobalt content and has double skin structure with 10mm thickness each in order to have simultaneously high resistivity in the toroidal direction and high strength against plasma disruption as well as seismic events. A finite element method for the calculation of the electromagnetic force induced by disruption and structural analysis has been applied. The most serious event which
is fast (~4 ms) major disruption, is considered. The eddy current reaches up to 100 MA/m2, which induces electromagnetic force < 120 MN/m3. The distribution of eddy current in the stabilizing plate is determined by openings (ports) for diagnostics and heating which cause separation and combination of the eddy current. The stabilizing plate has been modified in order to satisfy allowable membrane, bend and peak stress of SS316L. Trial manufacture of a part of the stabilizing plate has been done to investigate the effect of weld on the deformation
of the stabilizing plate resulting from the contraction of the weld metal. We have chosen how to weld, e.g. amount of welding, groove shape of each metallic plate consisting of the stabilizing plate to minimize the deformation and maximize the allowable stress. The arrangement of heat sinks and coolant pipes, and carbon tiles has also been done, taking into account the long pulse operation of JT-60SA., 31st Symposium of Fusion Technology (SOFT2020)},
 title = {Design of stabilizing plate of JT-60SA},
 year = {2020}
}