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Korea’s Artificial Sun Just Shattered a Fusion Record
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China strives for development, intl cooperation of nuclear fusion to seek ultimate solution to power shortage
https://www.globaltimes.cn/page/202404/1310066.shtml
and more than 1 month ago another record reported
European scientists set nuclear fusion energy record
https://www.ft.com/content/629fc9ca-f44 … 22b7a8ca15
Experiment was ‘fitting swansong’ for UK’s JET facility outside Oxford
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Fusion Experiment Demonstrates Cheaper Stellerator Using Creative Magnet Workaround
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Hannover's expertise boosts groundbreaking fusion project
https://www.spacedaily.com/reports/Hann … t_999.html
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A new Stellarator startup in Germany, reported here by Sabine Hossenfelder.
https://m.youtube.com/watch?v=aP0H2-Dnsbk
The donut shaped tokamak relies on a current within the plasma to create the magnetic field needed for plasma confinement. This reduces the required strength of the confinement magnets, but also creates instabilities in the magnetic field as plasma conductivity is a function of temperature. The stellarator does not rely upon plasma current for magnetic confinement. It requires stronger magnets and a more complex geometry. But the plasma is far more stable. German experiments have succeeded in maintaining a stable plasma for 8 minutes.
The problem with this approach is common to all magnetic confinement approaches. Power density is limited by low plasma density, due to limitations on the achievable strength of confining magnetic fields. Unless there is progress in materials science allowing us to build much stronger superconducting magnets, it is difficult to see any magnetic confinement fusion device functioning as an economically competitive powerplant.
Last edited by Calliban (2024-04-23 03:36:56)
"Plan and prepare for every possibility, and you will never act. It is nobler to have courage as we stumble into half the things we fear than to analyse every possible obstacle and begin nothing. Great things are achieved by embracing great dangers."
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