On this EU site they state that a site remains active for 50-100 years, https://www.euro-fusion.org/faq/does-fusion-give-off-radiation/ https://www.euro-fusion.

On this EU site they state that a site remains active for 50-100 years, https://www.euro-fusion.org/faq/does-fusion-give-off-radiation/ https://www.euro-fusion.org/faq/does-fusion-give-off-radiati.... I know it's better than fission, but still not nice. If is indeed seconds, then it doesn't matter of course. I was kind of hoping to understand more about material design in the recent scientific past with this question.