this post was submitted on 19 Feb 2025
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[–] notsoshaihulud@lemmy.world 5 points 2 months ago (2 children)

A headline without calling it an "Artificial Sun"?!

[–] Toribor@corndog.social 3 points 2 months ago (2 children)

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

[–] MalMen@masto.pt 1 points 2 months ago

@Toribor @notsoshaihulud with great power comes great responsibility

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[–] cynar@lemmy.world 3 points 2 months ago

The amusing thing is that the sun is actually quite a shit fusion reactor. It's power per unit volume is tiny. It just makes it up in sheer volume. A solar level fusion reactor would be almost completely useless to us. Instead we need to go far beyond the sun's output to just be viable.

It's like describing one of the mega mining dumper trucks as an "artificial mule".

[–] tomkatt@lemmy.world 2 points 2 months ago (1 children)

This is freaking awesome. Only a few years ago it was exciting to see a fusion reaction last a fraction of a second.

[–] Thief@lemmy.myserv.one 1 points 2 months ago (7 children)

It is awesome. Whichever country develops it first will be remembered as the next ‘moon landing’ event forever.

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[–] LostWon@lemmy.ca 2 points 2 months ago (4 children)

Maybe if it runs longer, we all get to jump to a better timeline. 😅

[–] PumpkinEscobar@lemmy.world 1 points 2 months ago

Or the world blows up and it’s all over. I guess what I’m saying is, no downside, fire it up and let’s see what happens.

[–] Sceptique@leminal.space 1 points 2 months ago

No tech will give you a better timeline, back on the floor please ^^ It's a political problem before anything else, and energy production is far from being the first problem.

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[–] Placebonickname@lemmy.world 2 points 2 months ago (2 children)

Meanwhile in America we’re trying to make macdonalds cheaper by bundling an extra sandwich to go along with a value meal…

[–] Jericho_Kane@lemmy.org 1 points 2 months ago

America would blow up a fusion reacto, call it dangerous, elon musk has a lot of things to say about it and then it would be illegal worldwide. Have you guys heard about coal? We already fixed it, just burn coal.

[–] crank0271@lemmy.world 1 points 2 months ago (2 children)
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[–] akakevbot@sh.itjust.works 1 points 2 months ago (1 children)
[–] RunningInRVA@lemmy.world 1 points 2 months ago (3 children)

The power of the sun in the palm of my hand

[–] ThePyroPython@lemmy.world 1 points 2 months ago (1 children)

la puissance du soleil dans la paume de ma main

Honhonhon

[Takes a drag on a sexy cigarette]

[–] Klear@lemmy.world 1 points 2 months ago

But I'm le tired.

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[–] match@pawb.social 1 points 2 months ago (2 children)

1,337 seconds? That... that number used to mean something, but now i can't recall what...

[–] rimjob_rainer@discuss.tchncs.de 1 points 2 months ago* (last edited 2 months ago) (1 children)

I still use 1337 sometimes, for joke names like 1337h4xX0r, or I use 1337 where others would use 42 or 69, but it's always that nobody gets it. How could past internet culture vanish like that?

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[–] not_so_handsome_jack@sh.itjust.works 1 points 2 months ago (6 children)

The translation has been lost to the ages

[–] Krik@lemmy.dbzer0.com 1 points 2 months ago

Doesn't sound that impressive when Wendelstein 7-X achieved 17 minutes of plasma in 2021.

[–] WalnutLum@lemmy.ml 1 points 2 months ago (1 children)

This is cool but also remember the practicalities of Fusion make it not much better than nuclear:

https://www.youtube.com/watch?v=ZHmHBMaS6Sw

[–] dev_null@lemmy.ml 1 points 2 months ago

Well nuclear is great, so even "not much better" would be great.

[–] DataDisrupter@feddit.nl 1 points 2 months ago (1 children)

I didn't see any mention of the output in the article. 22MW injected, but does anyone know if the reaction was actually generating a positive output?

[–] sushibowl@feddit.nl 2 points 2 months ago

No magnetic confinement fusion reactor in existence has ever generated a positive output. The current record belongs to JET, with a Q factor of 0.67. This record was set in 1997.

The biggest reason we haven't had a record break for a long time is money. The most favourable reaction for fusion is generally a D-T (Deuterium-Tritium) reaction. However, Tritium is incredibly expensive. So, most reactors run the much cheaper D-D reaction, which generates lower output. This is okay because current research reactors are mostly doing research on specific components of an eventual commercial reactor, and are not aiming for highest possible power output.

The main purpose of WEST is to do research on diverter components for ITER. ITER itself is expected to reach Q ≥ 10, but won't have any energy harvesting components. The goal is to add that to its successor, DEMO.

Inertial confinement fusion (using lasers) has produced higher records, but they generally exclude the energy used to produce the laser from the calculation. NIF has generated 3.15MJ of fusion output by delivering 2.05MJ of energy to it with a laser, nominally a Q = 1.54. however, creating the laser that delivered the power took about 300MJ.

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