Advancing Fusion Research
There are already a number of researchers involved in developing stable nuclear fusion. The goal may seem simple enough in theory:harnessing the same energy that powers the Sun but attaining it has proven to be rather difficult. For one, sustaining a stable nuclear fusion reaction is tricky, as it requires playing with variables that arent that easy to manipulate. Thats why Google Research is working in tandem with nuclear fusion company Tri-Alpha Energy to help simplify the process.
Their solution is a computer algorithm, dubbed the Optometrist algorithm, that can speed up experiments involving plasma, the core ingredient in a fusion reaction. Its also the most challenging aspect to manipulate. The whole thing is beyond what we know how to do even with Google-scale computer resources, Ted Baltz, a senior software engineer fromthe Google Accelerated Science Team, wrote in a Google Research blog.
We boiled the problem down to lets find plasma behaviors that an expert human plasma physicist thinks are interesting, and lets not break the machine when were doing it, Baltz added. This was a classic case of humans and computers doing a better job together than either could have separately.
The Optometrist algorithm was applied to Tri-Alpha Energys C2-U machine, where it was able to perform experiments that usually took a month to finish in just a few hours. The result, which was published in the journal Scientific Reports, was a 50 percent reduction in system-induced energy losses that increased total plasma energy. It was only for about two milliseconds, but still, it was a first! Baltz wrote. The next step is reaching that critical threshold necessary for nuclear fusion to occur and to stabilize.
Fusion research hasgarneredsignificant attention in recent years as scientists have recognized itspotential as arenewable and clean energy source. Nuclear fusion could generate four times the amount of energy nuclear fission produces (one fission event yields about 200 MeV of energy, or about 3.2 10-11 watt-seconds). Its no wonder, then, that fusion is considered the holy-grail of energy research.
Recent questions in fusion research have been concernedwith finding ways to stabilizethe plasma that powers it not an easy feat, since it requires temperatures of over 30 million degrees Celsius to sustain. Thus far, some researchers have proposedbuilding better fusion reactors,and others arelooking at the possibility of using a different base for plasma. Instead of the usual hydrogen, deuterium, or helium, physicists from the Princeton Plasma Physics Laboratoryhave been tinkering with argon-based plasma.
Where does Googles algorithm fit in? Well, it couldsignificantly shorten the amount of time needed for each of these experiments. Results like this might take years to solve without the power of advanced computation, Baltz said. By running computational modelsalongsidehuman experiments, the Optometrist algorithm can breeze through every possible combination for nuclear fusion to work.
Tri-Aplha Energy has already ditched the C2-U machine in favor of the more advanced Norman, which already achieved first plasma earlier this month. Theyre set to build a power generator for demonstration pending more successful experiments withthe Norman.
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Google's New Algorithm Wants to Help Researchers Stabilize Nuclear Fusion Reactions - Futurism
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