this post was submitted on 19 Feb 2025
183 points (98.9% liked)

World News

388 readers
864 users here now

Please help and contribute as we vote on rules:
https://quokk.au/post/21590

Other Great Communities:

Rules

Be excellent to each other

founded 9 months ago
MODERATORS
 

France has upped the ante in the quest for fusion power by maintaining a plasma reaction for over 22 minutes – a new record. The milestone was reached on February 12 at the Commissariat à l'énergie atomique et aux énergies alternatives (CEA) WEST Tokamak reactor.

all 32 comments
sorted by: hot top controversial new old
[–] cogitase@lemmy.dbzer0.com 45 points 5 months ago (1 children)

In the latest test, the WEST Tokamak held its reaction for 1,337 seconds.

They could have gone a few seconds longer but decided to stop it there.

[–] SnotFlickerman@lemmy.blahaj.zone 17 points 5 months ago

Them 1337 ~~gamers~~ scientists.

[–] SnotFlickerman@lemmy.blahaj.zone 31 points 5 months ago* (last edited 5 months ago) (1 children)

France really ~~becoming~~ returning to it's position as an international leader in so many different ways.

[–] NOT_RICK@lemmy.world 16 points 5 months ago (1 children)

Has been for centuries. There’s dozens upon dozens of “treaties of Paris”

[–] SnotFlickerman@lemmy.blahaj.zone 7 points 5 months ago (1 children)

True, I guess I just meant in the face of fading US post-WWII dominance.

[–] electricyarn@lemmy.world 4 points 5 months ago (1 children)

Going for the cultural victory late in the game.

Meanwhile Russia going for that lategame domination victory after having a tough dark age where a bunch of cities declared independence.

[–] Skua@kbin.earth 21 points 5 months ago (1 children)

It amuses me that the two longest-running tokamaks are now EAST in China and WEST in Europe

[–] Rolder@reddthat.com 14 points 5 months ago

It’d be way funnier if the China one was named WEST and the European one was EAST

[–] Bosht@lemmy.world 18 points 5 months ago (1 children)

This is actually pretty huge right? I know for the longest time there was always the joke of '5 more years and we will have fusion' but this is measurable progress right?

[–] MashedHobbits@lemy.lol 2 points 5 months ago

Yeah the fusion train has been picking up speed. Might be 2.5 years until Fusion now.

[–] someguy3@lemmy.world 18 points 5 months ago* (last edited 5 months ago) (1 children)

Holy fuck that's pretty fucking good.

According to CEA, the next step will be to create even longer reactions that could amount to a combined time of several hours, with the temperature growing increasingly hotter.

[–] HenriVolney@sh.itjust.works 4 points 5 months ago (2 children)

When will they be able to start ITER though?

[–] Skua@kbin.earth 4 points 5 months ago

Even assuming no delays, that's about ten years off.

[–] Psythik@lemm.ee 2 points 5 months ago

All I want to know is when I can finally buy a Mr. Fusion for my car.

[–] HenriVolney@sh.itjust.works 4 points 5 months ago

France baise ouais!

[–] ryedaft@sh.itjust.works 4 points 5 months ago

Not me being baffled by "The tricky bit isn't to get atoms to fuse. That's a fairly simple lab bench experiment." before remembering that we did that in high school.

[–] BlackLaZoR@fedia.io -5 points 5 months ago (1 children)

The tricky bit isn't to get atoms to fuse. That's a fairly simple lab bench experiment. The problem is creating the right conditions where the fusion reaction is self-sustaining, with a net energy output. That means reaching temperatures of between 100 – 150 million °C (180 – 270 million °F), a pressure of five to 10 atmospheres at the point of reaction, and keeping a high-energy plasma stable for at least 10 seconds.

Nowhere in the article is said that they actually achieved these temperatures. This is poor journalism at its worst

[–] Kraiden@kbin.earth 24 points 5 months ago (3 children)

The CEA seems to have done considerably better than 10 seconds and gone 25% beyond what China achieved in January 2025 with 1,066 seconds. In the latest test, the WEST Tokamak held its reaction for 1,337 seconds.

It's the very next paragraph... not to mention the very FIRST paragraph...

France has upped the ante in the quest for fusion power by maintaining a plasma reaction for over 22 minutes

What more do you want?

edit: The article talks about a sustained plasma reaction, not a fusion reaction. I agree that this could have been made clearer. Even in quoting it, I missed that

[–] CMLVI@lemmy.world 18 points 5 months ago

There is an influx of "this isn't the final result, therefore it's irrelevant" shit going on here and I don't like it. Across subjects. People would seemingly prefer radio silence over any information at all...it's astounding to me.

"Don't report on it until you have a commercially viable fusion reactor, this is just filler" filler these nuts nerd, I want to read about fusion reaction advancements.

[–] usualsuspect191@lemmy.ca 3 points 5 months ago (1 children)

I think they're trying to say that this reactor sustained a plasma reaction, but not a fusion one. By describing fusion and then talking about this successful test without outlining the difference, it makes the test seem more successful than it was.

[–] Kraiden@kbin.earth 2 points 5 months ago

Thanks, you're right. I missed that.

[–] BlackLaZoR@fedia.io -1 points 5 months ago (2 children)

The CEA seems to have done considerably better than 10 seconds

Dude, did you even read my post? I'm talking about temperature, not time

[–] Kraiden@kbin.earth 9 points 5 months ago

The temperature, and pressure are the conditions for a self sustaining fusion reaction. The fact that they maintained a fusion reaction for ANY length of time would imply that, yes, they reached those temperatures and pressures...

Your argument is essentially that the article is talking about how long they ran a steam engine, but that it doesn't say that achieved water boiling temperatures.

edit: @usualsuspect191@lemmy.ca has done a better job of explaining your issue. I missed that the article talks about a sustained plasma reaction, not a fusion reaction, which is subtle enough that I think I can be forgiven for missing your point. Especially since, at the end of the day, I'm just a layman.

Having a look at the source article here shows that you're correct, it was only 50 million celcius.

I've actually changed my mind, and I agree with you that that is misleading and the article author could have done a better job at making clear that, while this is still an impressive milestone, no fusion reaction took place.

[–] subignition@fedia.io 5 points 5 months ago

Lol what's your problem? Do you think the article is making claims about temperatures reached? Don't insult others' reading skills when you're not using your own.