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submitted 5 months ago by m3t00@lemmy.world to c/science@lemmy.world

48 seconds. I predict a glut of helium. balloons for everyone

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[-] malloc@lemmy.world 210 points 5 months ago* (last edited 5 months ago)

Hotter than the surface of the sun by a factor of ~18000.

Hotter than the suns core by a factor of ~7.

https://science.nasa.gov/solar-system/temperatures-across-our-solar-system/#hds-sidebar-nav-1

People talk about Icarus flying too close to the sun. Motherfuckers are recreating it in labs 😂

[-] NeatNit@discuss.tchncs.de 35 points 5 months ago

If Icarus won't come to the sun, the sun will come to Icarus.

[-] NeatNit@discuss.tchncs.de 17 points 5 months ago

In case the reference is lost, there's a famous Muslim proverb: if the mountain won't come to Muhammad, then Muhammad must go to the mountain. A flipped version of this proverb has somehow also become commonly known, perhaps surpassing the correct version (in my culture at least): if Muhammad won't go to the mountain, then the mountain will come to Muhammad.

[-] AA5B@lemmy.world 30 points 5 months ago

Hotter than yo mama …. Wait a minute

[-] rigatti@lemmy.world 14 points 5 months ago

Just barely though...

[-] CosmicCleric@lemmy.world 22 points 5 months ago

People talk about Icarus flying too close to the sun. Motherfuckers are recreating it in labs

This!

That's definitely some next-gen level magic being scienced/engineered.

[-] Plopp@lemmy.world 17 points 5 months ago

I just want to know what kind of thermometer they put into the plasma to measure the temperature. It must have been made of ice or something to not burn up.

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[-] CaptKoala@lemmy.ml 12 points 5 months ago

The power of the sun, in the palm of my hand.

[-] Harbinger01173430@lemmy.world 10 points 5 months ago

...Icarus was a primitive savage from ancient times...he didn't have our cool cyberpunk tech

[-] assembly@lemmy.world 64 points 5 months ago

48 seconds at those temperatures is no joke, that is pretty amazing. I didn’t see the article elaborate on what the current limiting factors are for pushing beyond 48 seconds. Like I wonder if it’s a hard wall, a new engineering challenge, a tweak needed, etc. this is the reactor that set the last record so they are doing something really right.

[-] remotelove@lemmy.ca 34 points 5 months ago

(The article touches on this bit a little) I was watching something about fusion the other day and it seems that it is super tricky to keep the magnetic field balanced in a way that keeps the plasma in a proper toroid. Not only does it need to keep the correct strength, it has to fight against random turbulence. This is critical to start the reaction, but also to maintain it.

Also, they gave some other physical limitations in the article as well:

To extend their plasma's burning time from the previous record-breaking run, the scientists tweaked aspects of their reactor's design, including replacing carbon with tungsten to improve the efficiency of the tokamak’s "divertors," which extract heat and ash from the reactor.

Basically, it's the container that has limitations as containing a pseudo-sun probably isn't easy.

[-] Nastybutler@lemmy.world 10 points 5 months ago

According to another commenter the heat generated is 7 times that of the core of the sun. Considering we use the sun in sci fi to destroy anything that can't be destroyed by other means, controlling that level of heat seems like a real challenge

[-] remotelove@lemmy.ca 10 points 5 months ago

Yeah. Actually using that heat is the next challenge, I suppose. If I am not mistaken (and I am often mistaken), they are not actually using the reaction to power the reactor yet.

It's all math, basically. If they measure more energy coming out than they put in, it's considered a win.

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[-] whaleross@lemmy.world 40 points 5 months ago

Hot damn! Limitless fusion power is only thirty years away!

[-] hydroptic@sopuli.xyz 30 points 5 months ago

Like it has been for the past 30 years (which, I assume, was the joke here.)

If fusion research was funded adequately we'd probably have it by now, but I don't know if it's the energy lobby or what that means that it's chronically underfunded. An actually working fusion reactor design would bring about such an upheaval in the energy markets that I wouldn't be surprised if plutocrats had a hand in making sure the research receives orders of magnitude less money than it should.

[-] malloc@lemmy.world 12 points 5 months ago

Existing energy conglomerates (ie, oil and gas) probably send their army of lobbyists around the world to spread FUD about fusion. Thus minimal funding. 🪦

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[-] ours@lemmy.world 9 points 5 months ago

Breakthroughs will bring in investment and then things can accelerate if it ends up viable.

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[-] Neato@ttrpg.network 18 points 5 months ago

Unfortunately the amount of helium made in fusion is so small as to be useless for anything humans need. Fusion is just that efficient.

[-] dohpaz42@lemmy.world 10 points 5 months ago

So no chipmunk voices? 😢

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[-] n3m37h@lemmy.dbzer0.com 6 points 5 months ago

They use orders of magnitude more liquid helium to cool the magnets used to stabalize fusion than they would ever make.

[-] KillingTimeItself@lemmy.dbzer0.com 17 points 5 months ago

sick. cool. So uh. How long until power generation happens now?

Ah who am i kidding, it'll be at least a decade, probably more like two. Three including manufacturing and building all the plants.

[-] DaCrazyJamez@sh.itjust.works 77 points 5 months ago

Well according to the 1993 classic, "SimCity 2000," fusion power becomes available to build in the year 2050. Since I have no other source that provides an exact date of viability, this remians the most reliable prediction we have.

[-] solarbabies@lemmy.world 6 points 5 months ago

curious, has SimCity predicted anything correctly up to now?

[-] DaCrazyJamez@sh.itjust.works 12 points 5 months ago

If my experience with the game was an accurate account, quite a few natural disasters.

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[-] CosmicCleric@lemmy.world 13 points 5 months ago

Ah who am i kidding, it’ll be at least a decade, probably more like two.

To be fair, they're trying to create a miniature star and keep it controlled/contained, to use its energy. That's some next-gen level stuff.

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[-] Kolanaki@yiffit.net 15 points 5 months ago* (last edited 5 months ago)

100 million degrees C

Sounds hot.

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[-] TheHottub@lemmy.world 12 points 5 months ago

One day we will break that record and nobody will ever know again.

[-] JATtho@lemmy.world 10 points 5 months ago

Fusion triple product: the duration the thing works x inverse of how close you are to melting the reactor vessel x how large is the reactor vessel

[-] FireTower@lemmy.world 9 points 5 months ago

One step closer to getting the T-51s working.

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[-] fidodo@lemmy.world 9 points 5 months ago

I'd like to know more. How do you actually harness the energy produced by temperatures that high? Is the end goal to figure out how to sustain the reaction at lower temperatures or do we actually have ways to generate electricity from those temperatures without losing most of it to waste?

[-] DarkThoughts@fedia.io 5 points 5 months ago

Same as with almost any other reactor: Steam running through turbines. The high temperatures are important to sustain the fusion process. The goal is that it practically self sustains itself while we just continue to feed it with hydrogen.

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[-] phoneymouse@lemmy.world 7 points 5 months ago

Can’t be good for our global warming problem, amirite?

[-] iceonfire1@feddit.nl 8 points 5 months ago

Lol ironic isn't it, considering easy access to fusion power would basically solve the climate crisis.

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this post was submitted on 06 Apr 2024
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