2 HN users recommended this lecture2 months2023score 2
Years with an HN recommendation, 2007–2026
HN commenters cite it as a detailed critical counterpoint to Helion's claims, for those who want more than the hype.
A roughly three-hour technical livestream Q&A on Helion Energy's fusion approach and the National Ignition Facility. It covers neutron production, shielding, energy recovery, diagnostics and why tokamaks might fare better.
“explains that 95% recovery efficiency is not the whole story” (HN, 2023)
The new video by the same guy who created the original criticism [this video] starting from 2:03:00 explains that 95% recovery efficiency is not the whole story.
Detailed critique explaining Helion recovery efficiency is not the whole story.
Additional resources for people who want to read or watch more on the subject: [this video] [link] /u/ValAslanyan is Improbable Matter and he gets into some interesting debates about Helion [link] [link]
The new video by the same guy [this video] from 32 min describes how Helion will get a lot of D+T neutrons from the secondary reactions despite all their efforts. Even without that the neutron flux from D+D reaction by Helion own admission will be enough to do a lot of damage within days of operation based on experience with slower fission neutrons.
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