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US Department of Energy: Fusion Ignition Achieved

energy.gov

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Re: US Department of Energy: Fusion Ignition Achieved

#21
post #7
post #4

It's a big deal, it will change the way people live. Hopefully it also help to eliminate wars, the war for the natural resources and land.

Maybe. Fusion energy might be more expensive than current forms or has undesirable yet to be known side effects. People said the same of nuclear and here we are.

You mean like tearing a hole in the fabric of space and time and opening a hell portal to another dimension?

Re: US Department of Energy: Fusion Ignition Achieved

#22
post #7
post #4

It's a big deal, it will change the way people live. Hopefully it also help to eliminate wars, the war for the natural resources and land.

Maybe. Fusion energy might be more expensive than current forms or has undesirable yet to be known side effects. People said the same of nuclear and here we are.

People also said the same thing about wind and solar, and those still have some downsides but they are also rapidly becoming the cheapest current form of peak energy, or with cheaper grid storage, energy period.

Sci-if authors have been talking about both solar and fusion for years, and now solar has been industrialized why wouldn’t we be excited to see progression in fusion?

Re: US Department of Energy: Fusion Ignition Achieved

#23
post #11

Can someone ELI5 why this is significant over previous fusion experiments?

Previous Fusion experiments, even though we could get Fusion reactions to occur, required more energy to start and sustain the reaction than was generated from it. For the first time, more was generated from the reaction than put in.

Note that while this is important progress, it's a bit of specific accounting. The entire system still requires more energy input than output, but this isolated piece can now output a little more than input.

> This is indeed a promising and exciting result, but we need to remember that this does not take into account the energy required to run the lasers that confine the reaction and other inefficiencies and losses.

https://www.sciencemediacentre.org/expert-reaction-to-fusion...

It's still entirely possible that we will not see a fusion reactor in production within our lifetimes.

Re: US Department of Energy: Fusion Ignition Achieved

#24

Earlier quoted context omitted.

Minus the laser power supply, is it correct?

Press release states: "meaning it produced more energy from fusion than the laser energy used to drive it." The 2.05 MJ put into the reaction includes the laser power supply then, it would seem, unless they are bad at press releases. But 2.05 MJ is not a lot of power.

2.05 MJ is what made it into the system from the laser. It took a lot more to power the laser.

Re: US Department of Energy: Fusion Ignition Achieved

#26
post #9

Every breakthroughs starts from government (people) funded initiatives, congrats to everyone involved, a future without the need to generate selfish profit is at reach!

Well, they'll clearly give the government-backed science to some "visionary" who will promptly monopolize the tech and hail himself as super-genius who brought energy to the masses!

Re: US Department of Energy: Fusion Ignition Achieved

#28

Earlier quoted context omitted.

Minus the laser power supply, is it correct?

Press release states: "meaning it produced more energy from fusion than the laser energy used to drive it." The 2.05 MJ put into the reaction includes the laser power supply then, it would seem, unless they are bad at press releases. But 2.05 MJ is not a lot of power.

If I remember from the article/discussion from yesterday, "laser energy" is the energy in the laser beam, but creating that 2 MJ laser beam required 200 MJ.

Re: US Department of Energy: Fusion Ignition Achieved

#29
post #7
post #4

It's a big deal, it will change the way people live. Hopefully it also help to eliminate wars, the war for the natural resources and land.

Maybe. Fusion energy might be more expensive than current forms or has undesirable yet to be known side effects. People said the same of nuclear and here we are.

The negative effect of nuclear were known in 1927 (Hermann Joseph Meller). It would be surprising if we discovered another form of radiation, given calculations lead us far further without showing new forms of radiations.

Re: US Department of Energy: Fusion Ignition Achieved

#30
I'm still a little unclear on the benefits that fusion offers compared to things like wind and solar. I understand that we need to develop better storage technologies for the energy produced by wind and solar, but that seems so much easier than the challenges currently facing fusion. Wind and solar just seem so far ahead of fusion already - they're pretty cheap and very widely deployed on a global scale. In comparison fusion seems very expensive and unproven and even when we get everything to work it might not be much better than a solar farm with a big battery pack. But maybe I'm missing something important about the economics?
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