核融合炉のプラズマ閉じ込め時間、どこまで達成しているかとネットを見たら、マックスプランク研究所のヴァンデルシュタイン7-Xの100秒が最長と言う。50年前は、数万分の一だったと思うから、百万倍の閉じ込め時間が達成させているが、核融合発電を実現するにはまだまだ先の話??
Successful second round of experiments with Wendelstein 7-X
New stellarator record achieved / next upgrading phase begun according to plan
The experiments conducted from July until November at the Wendelstein 7-X fusion device at the Max Planck Institute for Plasma Physics (IPP) in Greifswald have achieved higher values for the density and the energy content of the plasma and long discharge times of up to 100 seconds – record results for devices of the stellarator type. Meanwhile, the next round of the step-by-step upgrading of Wendelstein 7-X has begun. It is to equip the device for greater heating power and longer discharges. Wendelstein 7-X, the world’s largest fusion device of the stellarator type, is to investigate the suitability of this configuration for use in a power plant.