ITER en kernfusie

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Op zondag 6 september 2015 15:01 schreef mannenkokengewoonbeter het volgende:
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Iemand die kort en helder kan en zou willen uitleggen wat dit in grote lijnen is, doet, hoe het zal werken, en wat we eraan hebben?

Michio Kaku: Fusion Really Is 20 Years Away | Big Think

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Op maandag 15 augustus 2022 06:02 schreef Twintig het volgende:

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Met Kernfusie hebben we de kracht van een zon. Het geeft ons de mogelijkheid om ongelimiteerd energie te produceren van gewoon zeewater. Dus eigenlijk maken we een “ 2e zon op aarde”. En we verwachten het tussen 2030 en 2050 klaar te hebben.

Michio Kaku: Fusion Really Is 20 Years Away | Big Think

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Op donderdag 8 september 2022 11:36 schreef Aether het volgende:
Korean nuclear fusion reactor achieves 100 million°C for 30 seconds
https://www.shiningscienc(...)eactor-achieves.html

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The reaction was stopped after 30 seconds only because of limitations with hardware, and longer periods should be possible in future.

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“It’s not physics, it’s engineering,” he says. “If you just think about this from the point of view of a gas-fired or a coal-fired power station, if you didn’t have anything to take the heat away, then the people operating it would say ‘we have to switch it off because it gets too hot and it will melt the power station’, and that’s exactly the situation here.”

Darth Vader - "impressive, most impressive"

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Op maandag 7 augustus 2023 19:15 schreef Aether het volgende:
Physicists achieve fusion with net energy gain for second time
Initial data shows an energy output greater than 3.5 megajoules

https://arstechnica.com/s(...)ain-for-second-time/

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Energy gain in this context only compares the energy generated to the energy in the lasers, not to the total amount of energy pulled off the grid to power the system, which is much higher.

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Nuclear fusion: new record brings dream of clean energy closer
https://www.bbc.com/news/science-environment-68233330

Nuclear fusion has produced more energy than ever before in an experiment, bringing the world a step closer to the dream of limitless, clean power.
The new world record has been set at the UK-based JET laboratory.

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Scientists say they can use AI to solve a key problem in the quest for near-limitless clean energy

Scientists pursuing fusion energy say they have found a way to overcome one of their biggest challenges to date — by using artificial intelligence.

Nuclear fusion has for decades been hailed as a near-limitless source of clean energy, in what would be a game-changing solution to the climate crisis. But experts have only achieved and sustained fusion energy for a few seconds, and many obstacles remain, including instabilities in the highly complex process.

There are several ways to achieve fusion energy, but the most common involves using hydrogen variants as an input fuel and raising temperatures to extraordinarily high levels in a donut-shaped machine, known as a tokamak, to create a plasma, a soup-like state of matter.

But that plasma needs to be controlled and is highly susceptible to “tearing” and escaping the machine’s powerful magnetic fields that are designed to keep the plasma contained.

On Wednesday, researchers from Princeton University and the Princeton Plasma Physics Laboratory reported in the journal Nature they found a way to use AI to forecast these potential instabilities and prevent them from happening in real time.

The team carried out their experiments at the DIII-D National Fusion Facility in San Diego, and found that their AI controller could forecast potential plasma tearing up to 300 milliseconds in advance. Without that intervention, the fusion reaction would have ended suddenly.

“The experiments provide a foundation for using AI to solve a broad range of plasma instabilities, which have long hindered fusion energy,” a Princeton spokesperson said.

The findings are “definitely” a step forward for nuclear fusion, said Egemen Kolemen, a professor of mechanical and aerospace engineering at Princeton University and an author on the study.

“This is one of the big roadblocks — disruptions — and you want any reactor to be operating 24/7 for years without any problem,” Koleman told CNN. “And these type disruption and instabilities would be very problematic, so developing solutions like this increase their confidence that we can run these machines without any issues.”

Fusion energy is the process that powers the sun and other stars, and experts have been trying for decades to master it on Earth. It is achieved when two atoms that usually repel are forced to fuse together. It’s the opposite of nuclear fission — the type widely used today — which relies on splitting atoms.

Scientists and engineers near the English city of Oxford earlier this month set a new nuclear fusion energy record, sustaining 69 megajoules of fusion energy for five seconds, using just 0.2 milligrams of fuel. That’s enough to power roughly 12,000 households for the same amount of time.

But that experiment still used more energy as input than it generated. Another team in California, however, managed to produce a net amount of fusion energy in December 2022, in a process called “ignition.” They have replicated ignition three times since.

Despite the promising progress, fusion energy is a long way from becoming commercially available – well beyond the years that deep, sustained cuts to planet-warming pollution are required to stave off worsening impacts of the climate crisis.

Scientists say those pollution cuts are required this decade.

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Op zaterdag 6 juli 2024 12:46 schreef Tijger_m het volgende:

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Ik las het ook vandaag, heel jammer.

ITER 10 Years Later? • What the New Schedule Really Means | Hartmut Zohm

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Op vrijdag 19 juli 2024 10:14 schreef Bosbeetle het volgende:
Er gebeuren wel erg leuke dingen in dit veld. Er staat maandelijks wel een nieuw gebroken record in de Nature. Het is allemaal wel erg incrementeel tienden van procentjes erbij smokkelen hier een daar iets een halve seconde langer laten lopen. Maar vooruit gaat het zeker.

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‘Eindsprint kernfusie is ingezet’, Amerikaans bedrijf belooft eerste stroom in 2030